| File: | kern/vfs_syscalls.c |
| Warning: | line 582, column 11 Copies out a struct with uncleared padding (>= 4 bytes) |
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| 1 | /*- | |||
| 2 | * SPDX-License-Identifier: BSD-3-Clause | |||
| 3 | * | |||
| 4 | * Copyright (c) 1989, 1993 | |||
| 5 | * The Regents of the University of California. All rights reserved. | |||
| 6 | * (c) UNIX System Laboratories, Inc. | |||
| 7 | * All or some portions of this file are derived from material licensed | |||
| 8 | * to the University of California by American Telephone and Telegraph | |||
| 9 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with | |||
| 10 | * the permission of UNIX System Laboratories, Inc. | |||
| 11 | * | |||
| 12 | * Redistribution and use in source and binary forms, with or without | |||
| 13 | * modification, are permitted provided that the following conditions | |||
| 14 | * are met: | |||
| 15 | * 1. Redistributions of source code must retain the above copyright | |||
| 16 | * notice, this list of conditions and the following disclaimer. | |||
| 17 | * 2. Redistributions in binary form must reproduce the above copyright | |||
| 18 | * notice, this list of conditions and the following disclaimer in the | |||
| 19 | * documentation and/or other materials provided with the distribution. | |||
| 20 | * 3. Neither the name of the University nor the names of its contributors | |||
| 21 | * may be used to endorse or promote products derived from this software | |||
| 22 | * without specific prior written permission. | |||
| 23 | * | |||
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||
| 34 | * SUCH DAMAGE. | |||
| 35 | * | |||
| 36 | * @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94 | |||
| 37 | */ | |||
| 38 | ||||
| 39 | #include <sys/cdefs.h> | |||
| 40 | __FBSDID("$FreeBSD$")__asm__(".ident\t\"" "$FreeBSD$" "\""); | |||
| 41 | ||||
| 42 | #include "opt_capsicum.h" | |||
| 43 | #include "opt_ktrace.h" | |||
| 44 | ||||
| 45 | #include <sys/param.h> | |||
| 46 | #include <sys/systm.h> | |||
| 47 | #include <sys/bio.h> | |||
| 48 | #include <sys/buf.h> | |||
| 49 | #include <sys/capsicum.h> | |||
| 50 | #include <sys/disk.h> | |||
| 51 | #include <sys/sysent.h> | |||
| 52 | #include <sys/malloc.h> | |||
| 53 | #include <sys/mount.h> | |||
| 54 | #include <sys/mutex.h> | |||
| 55 | #include <sys/sysproto.h> | |||
| 56 | #include <sys/namei.h> | |||
| 57 | #include <sys/filedesc.h> | |||
| 58 | #include <sys/kernel.h> | |||
| 59 | #include <sys/fcntl.h> | |||
| 60 | #include <sys/file.h> | |||
| 61 | #include <sys/filio.h> | |||
| 62 | #include <sys/limits.h> | |||
| 63 | #include <sys/linker.h> | |||
| 64 | #include <sys/rwlock.h> | |||
| 65 | #include <sys/sdt.h> | |||
| 66 | #include <sys/stat.h> | |||
| 67 | #include <sys/sx.h> | |||
| 68 | #include <sys/unistd.h> | |||
| 69 | #include <sys/vnode.h> | |||
| 70 | #include <sys/priv.h> | |||
| 71 | #include <sys/proc.h> | |||
| 72 | #include <sys/dirent.h> | |||
| 73 | #include <sys/jail.h> | |||
| 74 | #include <sys/syscallsubr.h> | |||
| 75 | #include <sys/sysctl.h> | |||
| 76 | #ifdef KTRACE1 | |||
| 77 | #include <sys/ktrace.h> | |||
| 78 | #endif | |||
| 79 | ||||
| 80 | #include <machine/stdarg.h> | |||
| 81 | ||||
| 82 | #include <security/audit/audit.h> | |||
| 83 | #include <security/mac/mac_framework.h> | |||
| 84 | ||||
| 85 | #include <vm/vm.h> | |||
| 86 | #include <vm/vm_object.h> | |||
| 87 | #include <vm/vm_page.h> | |||
| 88 | #include <vm/uma.h> | |||
| 89 | ||||
| 90 | #include <ufs/ufs/quota.h> | |||
| 91 | ||||
| 92 | MALLOC_DEFINE(M_FADVISE, "fadvise", "posix_fadvise(2) information")struct malloc_type M_FADVISE[1] = { { ((void *)0), 877983977, "fadvise", ((void *)0) } }; static struct sysinit M_FADVISE_init_sys_init = { SI_SUB_KMEM, SI_ORDER_THIRD, (sysinit_cfunc_t)(sysinit_nfunc_t )malloc_init, ((void *)(M_FADVISE)) }; __asm__(".globl " "__start_set_sysinit_set" ); __asm__(".globl " "__stop_set_sysinit_set"); static void const * __set_sysinit_set_sym_M_FADVISE_init_sys_init __attribute__ ((__section__("set_" "sysinit_set"))) __attribute__((__used__ )) = &(M_FADVISE_init_sys_init); static struct sysinit M_FADVISE_uninit_sys_uninit = { SI_SUB_KMEM, SI_ORDER_ANY, (sysinit_cfunc_t)(sysinit_nfunc_t )malloc_uninit, ((void *)(M_FADVISE)) }; __asm__(".globl " "__start_set_sysuninit_set" ); __asm__(".globl " "__stop_set_sysuninit_set"); static void const * __set_sysuninit_set_sym_M_FADVISE_uninit_sys_uninit __attribute__ ((__section__("set_" "sysuninit_set"))) __attribute__((__used__ )) = &(M_FADVISE_uninit_sys_uninit); | |||
| 93 | ||||
| 94 | SDT_PROVIDER_DEFINE(vfs)struct sdt_provider sdt_provider_vfs[1] = { { "vfs", { ((void *)0), ((void *)0) }, 0, 0 } }; __asm__(".globl " "__start_set_sdt_providers_set" ); __asm__(".globl " "__stop_set_sdt_providers_set"); static void const * const __set_sdt_providers_set_sym_sdt_provider_vfs __attribute__ ((__section__("set_" "sdt_providers_set"))) __attribute__((__used__ )) = &(sdt_provider_vfs);; | |||
| 95 | SDT_PROBE_DEFINE2(vfs, , stat, mode, "char *", "int")struct sdt_probe sdt_vfs__stat_mode[1] = { { sizeof(struct sdt_probe ), sdt_provider_vfs, { ((void *)0), ((void *)0) }, { ((void * )0), ((void *)0) }, "", "stat", "mode", 0, 0, ((void *)0) } } ; __asm__(".globl " "__start_set_sdt_probes_set"); __asm__(".globl " "__stop_set_sdt_probes_set"); static void const * const __set_sdt_probes_set_sym_sdt_vfs__stat_mode __attribute__((__section__("set_" "sdt_probes_set"))) __attribute__ ((__used__)) = &(sdt_vfs__stat_mode);; static struct sdt_argtype sdta_vfs__stat_mode0[1] = { { 0, "char *", ((void *)0), { (( void *)0), ((void *)0) }, sdt_vfs__stat_mode } }; __asm__(".globl " "__start_set_sdt_argtypes_set"); __asm__(".globl " "__stop_set_sdt_argtypes_set" ); static void const * const __set_sdt_argtypes_set_sym_sdta_vfs__stat_mode0 __attribute__((__section__("set_" "sdt_argtypes_set"))) __attribute__ ((__used__)) = &(sdta_vfs__stat_mode0);; static struct sdt_argtype sdta_vfs__stat_mode1[1] = { { 1, "int", ((void *)0), { ((void *)0), ((void *)0) }, sdt_vfs__stat_mode } }; __asm__(".globl " "__start_set_sdt_argtypes_set"); __asm__(".globl " "__stop_set_sdt_argtypes_set" ); static void const * const __set_sdt_argtypes_set_sym_sdta_vfs__stat_mode1 __attribute__((__section__("set_" "sdt_argtypes_set"))) __attribute__ ((__used__)) = &(sdta_vfs__stat_mode1);; | |||
| 96 | SDT_PROBE_DEFINE2(vfs, , stat, reg, "char *", "int")struct sdt_probe sdt_vfs__stat_reg[1] = { { sizeof(struct sdt_probe ), sdt_provider_vfs, { ((void *)0), ((void *)0) }, { ((void * )0), ((void *)0) }, "", "stat", "reg", 0, 0, ((void *)0) } }; __asm__(".globl " "__start_set_sdt_probes_set"); __asm__(".globl " "__stop_set_sdt_probes_set"); static void const * const __set_sdt_probes_set_sym_sdt_vfs__stat_reg __attribute__((__section__("set_" "sdt_probes_set"))) __attribute__ ((__used__)) = &(sdt_vfs__stat_reg);; static struct sdt_argtype sdta_vfs__stat_reg0[1] = { { 0, "char *", ((void *)0), { ((void *)0), ((void *)0) }, sdt_vfs__stat_reg } }; __asm__(".globl " "__start_set_sdt_argtypes_set"); __asm__(".globl " "__stop_set_sdt_argtypes_set" ); static void const * const __set_sdt_argtypes_set_sym_sdta_vfs__stat_reg0 __attribute__((__section__("set_" "sdt_argtypes_set"))) __attribute__ ((__used__)) = &(sdta_vfs__stat_reg0);; static struct sdt_argtype sdta_vfs__stat_reg1[1] = { { 1, "int", ((void *)0), { ((void *)0), ((void *)0) }, sdt_vfs__stat_reg } }; __asm__(".globl " "__start_set_sdt_argtypes_set"); __asm__(".globl " "__stop_set_sdt_argtypes_set" ); static void const * const __set_sdt_argtypes_set_sym_sdta_vfs__stat_reg1 __attribute__((__section__("set_" "sdt_argtypes_set"))) __attribute__ ((__used__)) = &(sdta_vfs__stat_reg1);; | |||
| 97 | ||||
| 98 | static int kern_chflagsat(struct thread *td, int fd, const char *path, | |||
| 99 | enum uio_seg pathseg, u_long flags, int atflag); | |||
| 100 | static int setfflags(struct thread *td, struct vnode *, u_long); | |||
| 101 | static int getutimes(const struct timeval *, enum uio_seg, struct timespec *); | |||
| 102 | static int getutimens(const struct timespec *, enum uio_seg, | |||
| 103 | struct timespec *, int *); | |||
| 104 | static int setutimes(struct thread *td, struct vnode *, | |||
| 105 | const struct timespec *, int, int); | |||
| 106 | static int vn_access(struct vnode *vp, int user_flags, struct ucred *cred, | |||
| 107 | struct thread *td); | |||
| 108 | static int kern_fhlinkat(struct thread *td, int fd, const char *path, | |||
| 109 | enum uio_seg pathseg, fhandle_t *fhp); | |||
| 110 | static int kern_getfhat(struct thread *td, int flags, int fd, | |||
| 111 | const char *path, enum uio_seg pathseg, fhandle_t *fhp); | |||
| 112 | static int kern_readlink_vp(struct vnode *vp, char *buf, enum uio_seg bufseg, | |||
| 113 | size_t count, struct thread *td); | |||
| 114 | static int kern_linkat_vp(struct thread *td, struct vnode *vp, int fd, | |||
| 115 | const char *path, enum uio_seg segflag); | |||
| 116 | ||||
| 117 | /* | |||
| 118 | * Sync each mounted filesystem. | |||
| 119 | */ | |||
| 120 | #ifndef _SYS_SYSPROTO_H_ | |||
| 121 | struct sync_args { | |||
| 122 | int dummy; | |||
| 123 | }; | |||
| 124 | #endif | |||
| 125 | /* ARGSUSED */ | |||
| 126 | int | |||
| 127 | sys_sync(struct thread *td, struct sync_args *uap) | |||
| 128 | { | |||
| 129 | struct mount *mp, *nmp; | |||
| 130 | int save; | |||
| 131 | ||||
| 132 | mtx_lock(&mountlist_mtx)__mtx_lock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (132)); | |||
| 133 | for (mp = TAILQ_FIRST(&mountlist)((&mountlist)->tqh_first); mp != NULL((void *)0); mp = nmp) { | |||
| 134 | if (vfs_busy(mp, MBF_NOWAIT0x01 | MBF_MNTLSTLOCK0x02)) { | |||
| 135 | nmp = TAILQ_NEXT(mp, mnt_list)((mp)->mnt_list.tqe_next); | |||
| 136 | continue; | |||
| 137 | } | |||
| 138 | if ((mp->mnt_flag & MNT_RDONLY0x0000000000000001ULL) == 0 && | |||
| 139 | vn_start_write(NULL((void *)0), &mp, V_NOWAIT0x0002) == 0) { | |||
| 140 | save = curthread_pflags_set(TDP_SYNCIO0x00000800); | |||
| 141 | vfs_msync(mp, MNT_NOWAIT2); | |||
| 142 | VFS_SYNC(mp, MNT_NOWAIT)({ int _rc; _rc = (*(mp)->mnt_op->vfs_sync)(mp, 2); _rc ; }); | |||
| 143 | curthread_pflags_restore(save); | |||
| 144 | vn_finished_write(mp); | |||
| 145 | } | |||
| 146 | mtx_lock(&mountlist_mtx)__mtx_lock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (146)); | |||
| 147 | nmp = TAILQ_NEXT(mp, mnt_list)((mp)->mnt_list.tqe_next); | |||
| 148 | vfs_unbusy(mp); | |||
| 149 | } | |||
| 150 | mtx_unlock(&mountlist_mtx)__mtx_unlock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (150)); | |||
| 151 | return (0); | |||
| 152 | } | |||
| 153 | ||||
| 154 | /* | |||
| 155 | * Change filesystem quotas. | |||
| 156 | */ | |||
| 157 | #ifndef _SYS_SYSPROTO_H_ | |||
| 158 | struct quotactl_args { | |||
| 159 | char *path; | |||
| 160 | int cmd; | |||
| 161 | int uid; | |||
| 162 | caddr_t arg; | |||
| 163 | }; | |||
| 164 | #endif | |||
| 165 | int | |||
| 166 | sys_quotactl(struct thread *td, struct quotactl_args *uap) | |||
| 167 | { | |||
| 168 | struct mount *mp; | |||
| 169 | struct nameidata nd; | |||
| 170 | int error; | |||
| 171 | ||||
| 172 | AUDIT_ARG_CMD(uap->cmd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_cmd((uap->cmd)); } while (0); | |||
| 173 | AUDIT_ARG_UID(uap->uid)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_uid((uap->uid)); } while (0); | |||
| 174 | if (!prison_allow(td->td_ucred, PR_ALLOW_QUOTAS0x00000020)) | |||
| 175 | return (EPERM1); | |||
| 176 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1, UIO_USERSPACE,NDINIT_ALL(&nd, 0, 0x0040 | 0x0004 | 0x04000000, UIO_USERSPACE , uap->path, -100, ((void *)0), 0, td) | |||
| 177 | uap->path, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x0004 | 0x04000000, UIO_USERSPACE , uap->path, -100, ((void *)0), 0, td); | |||
| 178 | if ((error = namei(&nd)) != 0) | |||
| 179 | return (error); | |||
| 180 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 181 | mp = nd.ni_vp->v_mount; | |||
| 182 | vfs_ref(mp); | |||
| 183 | vput(nd.ni_vp); | |||
| 184 | error = vfs_busy(mp, 0); | |||
| 185 | vfs_rel(mp); | |||
| 186 | if (error != 0) | |||
| 187 | return (error); | |||
| 188 | error = VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg)({ int _rc; _rc = (*(mp)->mnt_op->vfs_quotactl)(mp, uap ->cmd, uap->uid, uap->arg); _rc; }); | |||
| 189 | ||||
| 190 | /* | |||
| 191 | * Since quota on operation typically needs to open quota | |||
| 192 | * file, the Q_QUOTAON handler needs to unbusy the mount point | |||
| 193 | * before calling into namei. Otherwise, unmount might be | |||
| 194 | * started between two vfs_busy() invocations (first is our, | |||
| 195 | * second is from mount point cross-walk code in lookup()), | |||
| 196 | * causing deadlock. | |||
| 197 | * | |||
| 198 | * Require that Q_QUOTAON handles the vfs_busy() reference on | |||
| 199 | * its own, always returning with ubusied mount point. | |||
| 200 | */ | |||
| 201 | if ((uap->cmd >> SUBCMDSHIFT8) != Q_QUOTAON0x0100 && | |||
| 202 | (uap->cmd >> SUBCMDSHIFT8) != Q_QUOTAOFF0x0200) | |||
| 203 | vfs_unbusy(mp); | |||
| 204 | return (error); | |||
| 205 | } | |||
| 206 | ||||
| 207 | /* | |||
| 208 | * Used by statfs conversion routines to scale the block size up if | |||
| 209 | * necessary so that all of the block counts are <= 'max_size'. Note | |||
| 210 | * that 'max_size' should be a bitmask, i.e. 2^n - 1 for some non-zero | |||
| 211 | * value of 'n'. | |||
| 212 | */ | |||
| 213 | void | |||
| 214 | statfs_scale_blocks(struct statfs *sf, long max_size) | |||
| 215 | { | |||
| 216 | uint64_t count; | |||
| 217 | int shift; | |||
| 218 | ||||
| 219 | KASSERT(powerof2(max_size + 1), ("%s: invalid max_size", __func__))do { if (__builtin_expect((!(((((max_size + 1)-1)&(max_size + 1))==0))), 0)) panic ("%s: invalid max_size", __func__); } while (0); | |||
| 220 | ||||
| 221 | /* | |||
| 222 | * Attempt to scale the block counts to give a more accurate | |||
| 223 | * overview to userland of the ratio of free space to used | |||
| 224 | * space. To do this, find the largest block count and compute | |||
| 225 | * a divisor that lets it fit into a signed integer <= max_size. | |||
| 226 | */ | |||
| 227 | if (sf->f_bavail < 0) | |||
| 228 | count = -sf->f_bavail; | |||
| 229 | else | |||
| 230 | count = sf->f_bavail; | |||
| 231 | count = MAX(sf->f_blocks, MAX(sf->f_bfree, count))(((sf->f_blocks)>((((sf->f_bfree)>(count))?(sf-> f_bfree):(count))))?(sf->f_blocks):((((sf->f_bfree)> (count))?(sf->f_bfree):(count)))); | |||
| 232 | if (count <= max_size) | |||
| 233 | return; | |||
| 234 | ||||
| 235 | count >>= flsl(max_size); | |||
| 236 | shift = 0; | |||
| 237 | while (count > 0) { | |||
| 238 | shift++; | |||
| 239 | count >>=1; | |||
| 240 | } | |||
| 241 | ||||
| 242 | sf->f_bsize <<= shift; | |||
| 243 | sf->f_blocks >>= shift; | |||
| 244 | sf->f_bfree >>= shift; | |||
| 245 | sf->f_bavail >>= shift; | |||
| 246 | } | |||
| 247 | ||||
| 248 | static int | |||
| 249 | kern_do_statfs(struct thread *td, struct mount *mp, struct statfs *buf) | |||
| 250 | { | |||
| 251 | struct statfs *sp; | |||
| 252 | int error; | |||
| 253 | ||||
| 254 | if (mp == NULL((void *)0)) | |||
| 255 | return (EBADF9); | |||
| 256 | error = vfs_busy(mp, 0); | |||
| 257 | vfs_rel(mp); | |||
| 258 | if (error != 0) | |||
| 259 | return (error); | |||
| 260 | #ifdef MAC1 | |||
| 261 | error = mac_mount_check_stat(td->td_ucred, mp); | |||
| 262 | if (error != 0) | |||
| 263 | goto out; | |||
| 264 | #endif | |||
| 265 | /* | |||
| 266 | * Set these in case the underlying filesystem fails to do so. | |||
| 267 | */ | |||
| 268 | sp = &mp->mnt_stat; | |||
| 269 | sp->f_version = STATFS_VERSION0x20140518; | |||
| 270 | sp->f_namemax = NAME_MAX255; | |||
| 271 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK(0x0000000000000001ULL | 0x0000000000000002ULL | 0x0000000000000004ULL | 0x0000000000000008ULL | 0x0000000000000020ULL | 0x0000000100000000ULL | 0x0000000000000040ULL | 0x0000000000000080ULL | 0x0000000000000100ULL | 0x0000000000000200ULL | 0x0000000000000400ULL| 0x0000000000000800ULL | 0x0000000000001000ULL | 0x0000000000008000ULL | 0x0000000000002000ULL | 0x0000000000004000ULL | 0x0000000010000000ULL | 0x0000000040000000ULL | 0x0000000080000000ULL | 0x0000000000100000ULL | 0x0000000000200000ULL | 0x0000000000800000ULL | 0x0000000020000000ULL | 0x0000000000400000ULL | 0x0000000002000000ULL | 0x0000000004000000ULL | 0x0000000008000000ULL | 0x0000000000000010ULL | 0x0000000200000000ULL | 0x0000000400000000ULL ); | |||
| 272 | error = VFS_STATFS(mp, sp)({ int _rc; _rc = __vfs_statfs((mp), (sp)); _rc; }); | |||
| 273 | if (error != 0) | |||
| 274 | goto out; | |||
| 275 | *buf = *sp; | |||
| 276 | if (priv_check(td, PRIV_VFS_GENERATION326)) { | |||
| 277 | buf->f_fsid.val[0] = buf->f_fsid.val[1] = 0; | |||
| 278 | prison_enforce_statfs(td->td_ucred, mp, buf); | |||
| 279 | } | |||
| 280 | out: | |||
| 281 | vfs_unbusy(mp); | |||
| 282 | return (error); | |||
| 283 | } | |||
| 284 | ||||
| 285 | /* | |||
| 286 | * Get filesystem statistics. | |||
| 287 | */ | |||
| 288 | #ifndef _SYS_SYSPROTO_H_ | |||
| 289 | struct statfs_args { | |||
| 290 | char *path; | |||
| 291 | struct statfs *buf; | |||
| 292 | }; | |||
| 293 | #endif | |||
| 294 | int | |||
| 295 | sys_statfs(struct thread *td, struct statfs_args *uap) | |||
| 296 | { | |||
| 297 | struct statfs *sfp; | |||
| 298 | int error; | |||
| 299 | ||||
| 300 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 301 | error = kern_statfs(td, uap->path, UIO_USERSPACE, sfp); | |||
| 302 | if (error == 0) | |||
| 303 | error = copyout(sfp, uap->buf, sizeof(struct statfs)); | |||
| 304 | free(sfp, M_STATFS); | |||
| 305 | return (error); | |||
| 306 | } | |||
| 307 | ||||
| 308 | int | |||
| 309 | kern_statfs(struct thread *td, const char *path, enum uio_seg pathseg, | |||
| 310 | struct statfs *buf) | |||
| 311 | { | |||
| 312 | struct mount *mp; | |||
| 313 | struct nameidata nd; | |||
| 314 | int error; | |||
| 315 | ||||
| 316 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | AUDITVNODE1,NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000, pathseg, path, -100, ((void *)0), 0, td) | |||
| 317 | pathseg, path, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000, pathseg, path, -100, ((void *)0), 0, td); | |||
| 318 | error = namei(&nd); | |||
| 319 | if (error != 0) | |||
| 320 | return (error); | |||
| 321 | mp = nd.ni_vp->v_mount; | |||
| 322 | vfs_ref(mp); | |||
| 323 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 324 | vput(nd.ni_vp); | |||
| 325 | return (kern_do_statfs(td, mp, buf)); | |||
| 326 | } | |||
| 327 | ||||
| 328 | /* | |||
| 329 | * Get filesystem statistics. | |||
| 330 | */ | |||
| 331 | #ifndef _SYS_SYSPROTO_H_ | |||
| 332 | struct fstatfs_args { | |||
| 333 | int fd; | |||
| 334 | struct statfs *buf; | |||
| 335 | }; | |||
| 336 | #endif | |||
| 337 | int | |||
| 338 | sys_fstatfs(struct thread *td, struct fstatfs_args *uap) | |||
| 339 | { | |||
| 340 | struct statfs *sfp; | |||
| 341 | int error; | |||
| 342 | ||||
| 343 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 344 | error = kern_fstatfs(td, uap->fd, sfp); | |||
| 345 | if (error == 0) | |||
| 346 | error = copyout(sfp, uap->buf, sizeof(struct statfs)); | |||
| 347 | free(sfp, M_STATFS); | |||
| 348 | return (error); | |||
| 349 | } | |||
| 350 | ||||
| 351 | int | |||
| 352 | kern_fstatfs(struct thread *td, int fd, struct statfs *buf) | |||
| 353 | { | |||
| 354 | struct file *fp; | |||
| 355 | struct mount *mp; | |||
| 356 | struct vnode *vp; | |||
| 357 | int error; | |||
| 358 | ||||
| 359 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 360 | error = getvnode(td, fd, &cap_fstatfs_rights, &fp); | |||
| 361 | if (error != 0) | |||
| 362 | return (error); | |||
| 363 | vp = fp->f_vnode; | |||
| 364 | vn_lock(vp, LK_SHARED | LK_RETRY)_vn_lock(vp, 0x200000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 364); | |||
| 365 | #ifdef AUDIT1 | |||
| 366 | AUDIT_ARG_VNODE1(vp)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((vp)); } while (0); | |||
| 367 | #endif | |||
| 368 | mp = vp->v_mount; | |||
| 369 | if (mp != NULL((void *)0)) | |||
| 370 | vfs_ref(mp); | |||
| 371 | VOP_UNLOCK(vp, 0); | |||
| 372 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 373 | return (kern_do_statfs(td, mp, buf)); | |||
| 374 | } | |||
| 375 | ||||
| 376 | /* | |||
| 377 | * Get statistics on all filesystems. | |||
| 378 | */ | |||
| 379 | #ifndef _SYS_SYSPROTO_H_ | |||
| 380 | struct getfsstat_args { | |||
| 381 | struct statfs *buf; | |||
| 382 | long bufsize; | |||
| 383 | int mode; | |||
| 384 | }; | |||
| 385 | #endif | |||
| 386 | int | |||
| 387 | sys_getfsstat(struct thread *td, struct getfsstat_args *uap) | |||
| 388 | { | |||
| 389 | size_t count; | |||
| 390 | int error; | |||
| 391 | ||||
| 392 | if (uap->bufsize < 0 || uap->bufsize > SIZE_MAX0xffffffffffffffff) | |||
| 393 | return (EINVAL22); | |||
| 394 | error = kern_getfsstat(td, &uap->buf, uap->bufsize, &count, | |||
| 395 | UIO_USERSPACE, uap->mode); | |||
| 396 | if (error == 0) | |||
| 397 | td->td_retvaltd_uretoff.tdu_retval[0] = count; | |||
| 398 | return (error); | |||
| 399 | } | |||
| 400 | ||||
| 401 | /* | |||
| 402 | * If (bufsize > 0 && bufseg == UIO_SYSSPACE) | |||
| 403 | * The caller is responsible for freeing memory which will be allocated | |||
| 404 | * in '*buf'. | |||
| 405 | */ | |||
| 406 | int | |||
| 407 | kern_getfsstat(struct thread *td, struct statfs **buf, size_t bufsize, | |||
| 408 | size_t *countp, enum uio_seg bufseg, int mode) | |||
| 409 | { | |||
| 410 | struct mount *mp, *nmp; | |||
| 411 | struct statfs *sfsp, *sp, *sptmp, *tofree; | |||
| 412 | size_t count, maxcount; | |||
| 413 | int error; | |||
| 414 | ||||
| 415 | switch (mode) { | |||
| 416 | case MNT_WAIT1: | |||
| 417 | case MNT_NOWAIT2: | |||
| 418 | break; | |||
| 419 | default: | |||
| 420 | if (bufseg == UIO_SYSSPACE) | |||
| 421 | *buf = NULL((void *)0); | |||
| 422 | return (EINVAL22); | |||
| 423 | } | |||
| 424 | restart: | |||
| 425 | maxcount = bufsize / sizeof(struct statfs); | |||
| 426 | if (bufsize == 0) { | |||
| 427 | sfsp = NULL((void *)0); | |||
| 428 | tofree = NULL((void *)0); | |||
| 429 | } else if (bufseg == UIO_USERSPACE) { | |||
| 430 | sfsp = *buf; | |||
| 431 | tofree = NULL((void *)0); | |||
| 432 | } else /* if (bufseg == UIO_SYSSPACE) */ { | |||
| 433 | count = 0; | |||
| 434 | mtx_lock(&mountlist_mtx)__mtx_lock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (434)); | |||
| 435 | TAILQ_FOREACH(mp, &mountlist, mnt_list)for ((mp) = (((&mountlist))->tqh_first); (mp); (mp) = ( ((mp))->mnt_list.tqe_next)) { | |||
| 436 | count++; | |||
| 437 | } | |||
| 438 | mtx_unlock(&mountlist_mtx)__mtx_unlock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (438)); | |||
| 439 | if (maxcount > count) | |||
| 440 | maxcount = count; | |||
| 441 | tofree = sfsp = *buf = malloc(maxcount * sizeof(struct statfs), | |||
| 442 | M_STATFS, M_WAITOK0x0002); | |||
| 443 | } | |||
| 444 | count = 0; | |||
| 445 | mtx_lock(&mountlist_mtx)__mtx_lock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (445)); | |||
| 446 | for (mp = TAILQ_FIRST(&mountlist)((&mountlist)->tqh_first); mp != NULL((void *)0); mp = nmp) { | |||
| 447 | if (prison_canseemount(td->td_ucred, mp) != 0) { | |||
| 448 | nmp = TAILQ_NEXT(mp, mnt_list)((mp)->mnt_list.tqe_next); | |||
| 449 | continue; | |||
| 450 | } | |||
| 451 | #ifdef MAC1 | |||
| 452 | if (mac_mount_check_stat(td->td_ucred, mp) != 0) { | |||
| 453 | nmp = TAILQ_NEXT(mp, mnt_list)((mp)->mnt_list.tqe_next); | |||
| 454 | continue; | |||
| 455 | } | |||
| 456 | #endif | |||
| 457 | if (mode == MNT_WAIT1) { | |||
| 458 | if (vfs_busy(mp, MBF_MNTLSTLOCK0x02) != 0) { | |||
| 459 | /* | |||
| 460 | * If vfs_busy() failed, and MBF_NOWAIT | |||
| 461 | * wasn't passed, then the mp is gone. | |||
| 462 | * Furthermore, because of MBF_MNTLSTLOCK, | |||
| 463 | * the mountlist_mtx was dropped. We have | |||
| 464 | * no other choice than to start over. | |||
| 465 | */ | |||
| 466 | mtx_unlock(&mountlist_mtx)__mtx_unlock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (466)); | |||
| 467 | free(tofree, M_STATFS); | |||
| 468 | goto restart; | |||
| 469 | } | |||
| 470 | } else { | |||
| 471 | if (vfs_busy(mp, MBF_NOWAIT0x01 | MBF_MNTLSTLOCK0x02) != 0) { | |||
| 472 | nmp = TAILQ_NEXT(mp, mnt_list)((mp)->mnt_list.tqe_next); | |||
| 473 | continue; | |||
| 474 | } | |||
| 475 | } | |||
| 476 | if (sfsp != NULL((void *)0) && count < maxcount) { | |||
| 477 | sp = &mp->mnt_stat; | |||
| 478 | /* | |||
| 479 | * Set these in case the underlying filesystem | |||
| 480 | * fails to do so. | |||
| 481 | */ | |||
| 482 | sp->f_version = STATFS_VERSION0x20140518; | |||
| 483 | sp->f_namemax = NAME_MAX255; | |||
| 484 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK(0x0000000000000001ULL | 0x0000000000000002ULL | 0x0000000000000004ULL | 0x0000000000000008ULL | 0x0000000000000020ULL | 0x0000000100000000ULL | 0x0000000000000040ULL | 0x0000000000000080ULL | 0x0000000000000100ULL | 0x0000000000000200ULL | 0x0000000000000400ULL| 0x0000000000000800ULL | 0x0000000000001000ULL | 0x0000000000008000ULL | 0x0000000000002000ULL | 0x0000000000004000ULL | 0x0000000010000000ULL | 0x0000000040000000ULL | 0x0000000080000000ULL | 0x0000000000100000ULL | 0x0000000000200000ULL | 0x0000000000800000ULL | 0x0000000020000000ULL | 0x0000000000400000ULL | 0x0000000002000000ULL | 0x0000000004000000ULL | 0x0000000008000000ULL | 0x0000000000000010ULL | 0x0000000200000000ULL | 0x0000000400000000ULL ); | |||
| 485 | /* | |||
| 486 | * If MNT_NOWAIT is specified, do not refresh | |||
| 487 | * the fsstat cache. | |||
| 488 | */ | |||
| 489 | if (mode != MNT_NOWAIT2) { | |||
| 490 | error = VFS_STATFS(mp, sp)({ int _rc; _rc = __vfs_statfs((mp), (sp)); _rc; }); | |||
| 491 | if (error != 0) { | |||
| 492 | mtx_lock(&mountlist_mtx)__mtx_lock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (492)); | |||
| 493 | nmp = TAILQ_NEXT(mp, mnt_list)((mp)->mnt_list.tqe_next); | |||
| 494 | vfs_unbusy(mp); | |||
| 495 | continue; | |||
| 496 | } | |||
| 497 | } | |||
| 498 | if (priv_check(td, PRIV_VFS_GENERATION326)) { | |||
| 499 | sptmp = malloc(sizeof(struct statfs), M_STATFS, | |||
| 500 | M_WAITOK0x0002); | |||
| 501 | *sptmp = *sp; | |||
| 502 | sptmp->f_fsid.val[0] = sptmp->f_fsid.val[1] = 0; | |||
| 503 | prison_enforce_statfs(td->td_ucred, mp, sptmp); | |||
| 504 | sp = sptmp; | |||
| 505 | } else | |||
| 506 | sptmp = NULL((void *)0); | |||
| 507 | if (bufseg == UIO_SYSSPACE) { | |||
| 508 | bcopy(sp, sfsp, sizeof(*sp))__builtin_memmove((sfsp), (sp), (sizeof(*sp))); | |||
| 509 | free(sptmp, M_STATFS); | |||
| 510 | } else /* if (bufseg == UIO_USERSPACE) */ { | |||
| 511 | error = copyout(sp, sfsp, sizeof(*sp)); | |||
| 512 | free(sptmp, M_STATFS); | |||
| 513 | if (error != 0) { | |||
| 514 | vfs_unbusy(mp); | |||
| 515 | return (error); | |||
| 516 | } | |||
| 517 | } | |||
| 518 | sfsp++; | |||
| 519 | } | |||
| 520 | count++; | |||
| 521 | mtx_lock(&mountlist_mtx)__mtx_lock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (521)); | |||
| 522 | nmp = TAILQ_NEXT(mp, mnt_list)((mp)->mnt_list.tqe_next); | |||
| 523 | vfs_unbusy(mp); | |||
| 524 | } | |||
| 525 | mtx_unlock(&mountlist_mtx)__mtx_unlock_flags(&((((&mountlist_mtx))))->mtx_lock , ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c"), (525)); | |||
| 526 | if (sfsp != NULL((void *)0) && count > maxcount) | |||
| 527 | *countp = maxcount; | |||
| 528 | else | |||
| 529 | *countp = count; | |||
| 530 | return (0); | |||
| 531 | } | |||
| 532 | ||||
| 533 | #ifdef COMPAT_FREEBSD41 | |||
| 534 | /* | |||
| 535 | * Get old format filesystem statistics. | |||
| 536 | */ | |||
| 537 | static void freebsd4_cvtstatfs(struct statfs *, struct ostatfs *); | |||
| 538 | ||||
| 539 | #ifndef _SYS_SYSPROTO_H_ | |||
| 540 | struct freebsd4_statfs_args { | |||
| 541 | char *path; | |||
| 542 | struct ostatfs *buf; | |||
| 543 | }; | |||
| 544 | #endif | |||
| 545 | int | |||
| 546 | freebsd4_statfs(struct thread *td, struct freebsd4_statfs_args *uap) | |||
| 547 | { | |||
| 548 | struct ostatfs osb; | |||
| 549 | struct statfs *sfp; | |||
| 550 | int error; | |||
| 551 | ||||
| 552 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 553 | error = kern_statfs(td, uap->path, UIO_USERSPACE, sfp); | |||
| 554 | if (error == 0) { | |||
| 555 | freebsd4_cvtstatfs(sfp, &osb); | |||
| 556 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 557 | } | |||
| 558 | free(sfp, M_STATFS); | |||
| 559 | return (error); | |||
| 560 | } | |||
| 561 | ||||
| 562 | /* | |||
| 563 | * Get filesystem statistics. | |||
| 564 | */ | |||
| 565 | #ifndef _SYS_SYSPROTO_H_ | |||
| 566 | struct freebsd4_fstatfs_args { | |||
| 567 | int fd; | |||
| 568 | struct ostatfs *buf; | |||
| 569 | }; | |||
| 570 | #endif | |||
| 571 | int | |||
| 572 | freebsd4_fstatfs(struct thread *td, struct freebsd4_fstatfs_args *uap) | |||
| 573 | { | |||
| 574 | struct ostatfs osb; | |||
| 575 | struct statfs *sfp; | |||
| 576 | int error; | |||
| 577 | ||||
| 578 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 579 | error = kern_fstatfs(td, uap->fd, sfp); | |||
| 580 | if (error == 0) { | |||
| ||||
| 581 | freebsd4_cvtstatfs(sfp, &osb); | |||
| 582 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| ||||
| 583 | } | |||
| 584 | free(sfp, M_STATFS); | |||
| 585 | return (error); | |||
| 586 | } | |||
| 587 | ||||
| 588 | /* | |||
| 589 | * Get statistics on all filesystems. | |||
| 590 | */ | |||
| 591 | #ifndef _SYS_SYSPROTO_H_ | |||
| 592 | struct freebsd4_getfsstat_args { | |||
| 593 | struct ostatfs *buf; | |||
| 594 | long bufsize; | |||
| 595 | int mode; | |||
| 596 | }; | |||
| 597 | #endif | |||
| 598 | int | |||
| 599 | freebsd4_getfsstat(struct thread *td, struct freebsd4_getfsstat_args *uap) | |||
| 600 | { | |||
| 601 | struct statfs *buf, *sp; | |||
| 602 | struct ostatfs osb; | |||
| 603 | size_t count, size; | |||
| 604 | int error; | |||
| 605 | ||||
| 606 | if (uap->bufsize < 0) | |||
| 607 | return (EINVAL22); | |||
| 608 | count = uap->bufsize / sizeof(struct ostatfs); | |||
| 609 | if (count > SIZE_MAX0xffffffffffffffff / sizeof(struct statfs)) | |||
| 610 | return (EINVAL22); | |||
| 611 | size = count * sizeof(struct statfs); | |||
| 612 | error = kern_getfsstat(td, &buf, size, &count, UIO_SYSSPACE, | |||
| 613 | uap->mode); | |||
| 614 | if (error == 0) | |||
| 615 | td->td_retvaltd_uretoff.tdu_retval[0] = count; | |||
| 616 | if (size != 0) { | |||
| 617 | sp = buf; | |||
| 618 | while (count != 0 && error == 0) { | |||
| 619 | freebsd4_cvtstatfs(sp, &osb); | |||
| 620 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 621 | sp++; | |||
| 622 | uap->buf++; | |||
| 623 | count--; | |||
| 624 | } | |||
| 625 | free(buf, M_STATFS); | |||
| 626 | } | |||
| 627 | return (error); | |||
| 628 | } | |||
| 629 | ||||
| 630 | /* | |||
| 631 | * Implement fstatfs() for (NFS) file handles. | |||
| 632 | */ | |||
| 633 | #ifndef _SYS_SYSPROTO_H_ | |||
| 634 | struct freebsd4_fhstatfs_args { | |||
| 635 | struct fhandle *u_fhp; | |||
| 636 | struct ostatfs *buf; | |||
| 637 | }; | |||
| 638 | #endif | |||
| 639 | int | |||
| 640 | freebsd4_fhstatfs(struct thread *td, struct freebsd4_fhstatfs_args *uap) | |||
| 641 | { | |||
| 642 | struct ostatfs osb; | |||
| 643 | struct statfs *sfp; | |||
| 644 | fhandle_t fh; | |||
| 645 | int error; | |||
| 646 | ||||
| 647 | error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t)); | |||
| 648 | if (error != 0) | |||
| 649 | return (error); | |||
| 650 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 651 | error = kern_fhstatfs(td, fh, sfp); | |||
| 652 | if (error == 0) { | |||
| 653 | freebsd4_cvtstatfs(sfp, &osb); | |||
| 654 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 655 | } | |||
| 656 | free(sfp, M_STATFS); | |||
| 657 | return (error); | |||
| 658 | } | |||
| 659 | ||||
| 660 | /* | |||
| 661 | * Convert a new format statfs structure to an old format statfs structure. | |||
| 662 | */ | |||
| 663 | static void | |||
| 664 | freebsd4_cvtstatfs(struct statfs *nsp, struct ostatfs *osp) | |||
| 665 | { | |||
| 666 | ||||
| 667 | statfs_scale_blocks(nsp, LONG_MAX0x7fffffffffffffff); | |||
| 668 | bzero(osp, sizeof(*osp))__builtin_memset((osp), 0, (sizeof(*osp))); | |||
| 669 | osp->f_bsize = nsp->f_bsize; | |||
| 670 | osp->f_iosize = MIN(nsp->f_iosize, LONG_MAX)(((nsp->f_iosize)<(0x7fffffffffffffff))?(nsp->f_iosize ):(0x7fffffffffffffff)); | |||
| 671 | osp->f_blocks = nsp->f_blocks; | |||
| 672 | osp->f_bfree = nsp->f_bfree; | |||
| 673 | osp->f_bavail = nsp->f_bavail; | |||
| 674 | osp->f_files = MIN(nsp->f_files, LONG_MAX)(((nsp->f_files)<(0x7fffffffffffffff))?(nsp->f_files ):(0x7fffffffffffffff)); | |||
| 675 | osp->f_ffree = MIN(nsp->f_ffree, LONG_MAX)(((nsp->f_ffree)<(0x7fffffffffffffff))?(nsp->f_ffree ):(0x7fffffffffffffff)); | |||
| 676 | osp->f_owner = nsp->f_owner; | |||
| 677 | osp->f_type = nsp->f_type; | |||
| 678 | osp->f_flags = nsp->f_flags; | |||
| 679 | osp->f_syncwrites = MIN(nsp->f_syncwrites, LONG_MAX)(((nsp->f_syncwrites)<(0x7fffffffffffffff))?(nsp->f_syncwrites ):(0x7fffffffffffffff)); | |||
| 680 | osp->f_asyncwrites = MIN(nsp->f_asyncwrites, LONG_MAX)(((nsp->f_asyncwrites)<(0x7fffffffffffffff))?(nsp->f_asyncwrites ):(0x7fffffffffffffff)); | |||
| 681 | osp->f_syncreads = MIN(nsp->f_syncreads, LONG_MAX)(((nsp->f_syncreads)<(0x7fffffffffffffff))?(nsp->f_syncreads ):(0x7fffffffffffffff)); | |||
| 682 | osp->f_asyncreads = MIN(nsp->f_asyncreads, LONG_MAX)(((nsp->f_asyncreads)<(0x7fffffffffffffff))?(nsp->f_asyncreads ):(0x7fffffffffffffff)); | |||
| 683 | strlcpy(osp->f_fstypename, nsp->f_fstypename, | |||
| 684 | MIN(MFSNAMELEN, OMFSNAMELEN)(((16)<(16))?(16):(16))); | |||
| 685 | strlcpy(osp->f_mntonname, nsp->f_mntonname, | |||
| 686 | MIN(MNAMELEN, OMNAMELEN)(((1024)<((88 - 2 * sizeof(long))))?(1024):((88 - 2 * sizeof (long))))); | |||
| 687 | strlcpy(osp->f_mntfromname, nsp->f_mntfromname, | |||
| 688 | MIN(MNAMELEN, OMNAMELEN)(((1024)<((88 - 2 * sizeof(long))))?(1024):((88 - 2 * sizeof (long))))); | |||
| 689 | osp->f_fsid = nsp->f_fsid; | |||
| 690 | } | |||
| 691 | #endif /* COMPAT_FREEBSD4 */ | |||
| 692 | ||||
| 693 | #if defined(COMPAT_FREEBSD111) | |||
| 694 | /* | |||
| 695 | * Get old format filesystem statistics. | |||
| 696 | */ | |||
| 697 | static void freebsd11_cvtstatfs(struct statfs *, struct freebsd11_statfs *); | |||
| 698 | ||||
| 699 | int | |||
| 700 | freebsd11_statfs(struct thread *td, struct freebsd11_statfs_args *uap) | |||
| 701 | { | |||
| 702 | struct freebsd11_statfs osb; | |||
| 703 | struct statfs *sfp; | |||
| 704 | int error; | |||
| 705 | ||||
| 706 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 707 | error = kern_statfs(td, uap->path, UIO_USERSPACE, sfp); | |||
| 708 | if (error == 0) { | |||
| 709 | freebsd11_cvtstatfs(sfp, &osb); | |||
| 710 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 711 | } | |||
| 712 | free(sfp, M_STATFS); | |||
| 713 | return (error); | |||
| 714 | } | |||
| 715 | ||||
| 716 | /* | |||
| 717 | * Get filesystem statistics. | |||
| 718 | */ | |||
| 719 | int | |||
| 720 | freebsd11_fstatfs(struct thread *td, struct freebsd11_fstatfs_args *uap) | |||
| 721 | { | |||
| 722 | struct freebsd11_statfs osb; | |||
| 723 | struct statfs *sfp; | |||
| 724 | int error; | |||
| 725 | ||||
| 726 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 727 | error = kern_fstatfs(td, uap->fd, sfp); | |||
| 728 | if (error == 0) { | |||
| 729 | freebsd11_cvtstatfs(sfp, &osb); | |||
| 730 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 731 | } | |||
| 732 | free(sfp, M_STATFS); | |||
| 733 | return (error); | |||
| 734 | } | |||
| 735 | ||||
| 736 | /* | |||
| 737 | * Get statistics on all filesystems. | |||
| 738 | */ | |||
| 739 | int | |||
| 740 | freebsd11_getfsstat(struct thread *td, struct freebsd11_getfsstat_args *uap) | |||
| 741 | { | |||
| 742 | struct freebsd11_statfs osb; | |||
| 743 | struct statfs *buf, *sp; | |||
| 744 | size_t count, size; | |||
| 745 | int error; | |||
| 746 | ||||
| 747 | count = uap->bufsize / sizeof(struct ostatfs); | |||
| 748 | size = count * sizeof(struct statfs); | |||
| 749 | error = kern_getfsstat(td, &buf, size, &count, UIO_SYSSPACE, | |||
| 750 | uap->mode); | |||
| 751 | if (error == 0) | |||
| 752 | td->td_retvaltd_uretoff.tdu_retval[0] = count; | |||
| 753 | if (size > 0) { | |||
| 754 | sp = buf; | |||
| 755 | while (count > 0 && error == 0) { | |||
| 756 | freebsd11_cvtstatfs(sp, &osb); | |||
| 757 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 758 | sp++; | |||
| 759 | uap->buf++; | |||
| 760 | count--; | |||
| 761 | } | |||
| 762 | free(buf, M_STATFS); | |||
| 763 | } | |||
| 764 | return (error); | |||
| 765 | } | |||
| 766 | ||||
| 767 | /* | |||
| 768 | * Implement fstatfs() for (NFS) file handles. | |||
| 769 | */ | |||
| 770 | int | |||
| 771 | freebsd11_fhstatfs(struct thread *td, struct freebsd11_fhstatfs_args *uap) | |||
| 772 | { | |||
| 773 | struct freebsd11_statfs osb; | |||
| 774 | struct statfs *sfp; | |||
| 775 | fhandle_t fh; | |||
| 776 | int error; | |||
| 777 | ||||
| 778 | error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t)); | |||
| 779 | if (error) | |||
| 780 | return (error); | |||
| 781 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 782 | error = kern_fhstatfs(td, fh, sfp); | |||
| 783 | if (error == 0) { | |||
| 784 | freebsd11_cvtstatfs(sfp, &osb); | |||
| 785 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 786 | } | |||
| 787 | free(sfp, M_STATFS); | |||
| 788 | return (error); | |||
| 789 | } | |||
| 790 | ||||
| 791 | /* | |||
| 792 | * Convert a new format statfs structure to an old format statfs structure. | |||
| 793 | */ | |||
| 794 | static void | |||
| 795 | freebsd11_cvtstatfs(struct statfs *nsp, struct freebsd11_statfs *osp) | |||
| 796 | { | |||
| 797 | ||||
| 798 | bzero(osp, sizeof(*osp))__builtin_memset((osp), 0, (sizeof(*osp))); | |||
| 799 | osp->f_version = FREEBSD11_STATFS_VERSION0x20030518; | |||
| 800 | osp->f_type = nsp->f_type; | |||
| 801 | osp->f_flags = nsp->f_flags; | |||
| 802 | osp->f_bsize = nsp->f_bsize; | |||
| 803 | osp->f_iosize = nsp->f_iosize; | |||
| 804 | osp->f_blocks = nsp->f_blocks; | |||
| 805 | osp->f_bfree = nsp->f_bfree; | |||
| 806 | osp->f_bavail = nsp->f_bavail; | |||
| 807 | osp->f_files = nsp->f_files; | |||
| 808 | osp->f_ffree = nsp->f_ffree; | |||
| 809 | osp->f_syncwrites = nsp->f_syncwrites; | |||
| 810 | osp->f_asyncwrites = nsp->f_asyncwrites; | |||
| 811 | osp->f_syncreads = nsp->f_syncreads; | |||
| 812 | osp->f_asyncreads = nsp->f_asyncreads; | |||
| 813 | osp->f_namemax = nsp->f_namemax; | |||
| 814 | osp->f_owner = nsp->f_owner; | |||
| 815 | osp->f_fsid = nsp->f_fsid; | |||
| 816 | strlcpy(osp->f_fstypename, nsp->f_fstypename, | |||
| 817 | MIN(MFSNAMELEN, sizeof(osp->f_fstypename))(((16)<(sizeof(osp->f_fstypename)))?(16):(sizeof(osp-> f_fstypename)))); | |||
| 818 | strlcpy(osp->f_mntonname, nsp->f_mntonname, | |||
| 819 | MIN(MNAMELEN, sizeof(osp->f_mntonname))(((1024)<(sizeof(osp->f_mntonname)))?(1024):(sizeof(osp ->f_mntonname)))); | |||
| 820 | strlcpy(osp->f_mntfromname, nsp->f_mntfromname, | |||
| 821 | MIN(MNAMELEN, sizeof(osp->f_mntfromname))(((1024)<(sizeof(osp->f_mntfromname)))?(1024):(sizeof(osp ->f_mntfromname)))); | |||
| 822 | } | |||
| 823 | #endif /* COMPAT_FREEBSD11 */ | |||
| 824 | ||||
| 825 | /* | |||
| 826 | * Change current working directory to a given file descriptor. | |||
| 827 | */ | |||
| 828 | #ifndef _SYS_SYSPROTO_H_ | |||
| 829 | struct fchdir_args { | |||
| 830 | int fd; | |||
| 831 | }; | |||
| 832 | #endif | |||
| 833 | int | |||
| 834 | sys_fchdir(struct thread *td, struct fchdir_args *uap) | |||
| 835 | { | |||
| 836 | struct vnode *vp, *tdp; | |||
| 837 | struct mount *mp; | |||
| 838 | struct file *fp; | |||
| 839 | int error; | |||
| 840 | ||||
| 841 | AUDIT_ARG_FD(uap->fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((uap->fd)); } while (0); | |||
| 842 | error = getvnode(td, uap->fd, &cap_fchdir_rights, | |||
| 843 | &fp); | |||
| 844 | if (error != 0) | |||
| 845 | return (error); | |||
| 846 | vp = fp->f_vnode; | |||
| 847 | vrefact(vp); | |||
| 848 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 849 | vn_lock(vp, LK_SHARED | LK_RETRY)_vn_lock(vp, 0x200000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 849); | |||
| 850 | AUDIT_ARG_VNODE1(vp)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((vp)); } while (0); | |||
| 851 | error = change_dir(vp, td); | |||
| 852 | while (!error && (mp = vp->v_mountedhere) != NULL((void *)0)) { | |||
| 853 | if (vfs_busy(mp, 0)) | |||
| 854 | continue; | |||
| 855 | error = VFS_ROOT(mp, LK_SHARED, &tdp)({ int _rc; _rc = (*(mp)->mnt_op->vfs_root)(mp, 0x200000 , &tdp); _rc; }); | |||
| 856 | vfs_unbusy(mp); | |||
| 857 | if (error != 0) | |||
| 858 | break; | |||
| 859 | vput(vp); | |||
| 860 | vp = tdp; | |||
| 861 | } | |||
| 862 | if (error != 0) { | |||
| 863 | vput(vp); | |||
| 864 | return (error); | |||
| 865 | } | |||
| 866 | VOP_UNLOCK(vp, 0); | |||
| 867 | pwd_chdir(td, vp); | |||
| 868 | return (0); | |||
| 869 | } | |||
| 870 | ||||
| 871 | /* | |||
| 872 | * Change current working directory (``.''). | |||
| 873 | */ | |||
| 874 | #ifndef _SYS_SYSPROTO_H_ | |||
| 875 | struct chdir_args { | |||
| 876 | char *path; | |||
| 877 | }; | |||
| 878 | #endif | |||
| 879 | int | |||
| 880 | sys_chdir(struct thread *td, struct chdir_args *uap) | |||
| 881 | { | |||
| 882 | ||||
| 883 | return (kern_chdir(td, uap->path, UIO_USERSPACE)); | |||
| 884 | } | |||
| 885 | ||||
| 886 | int | |||
| 887 | kern_chdir(struct thread *td, const char *path, enum uio_seg pathseg) | |||
| 888 | { | |||
| 889 | struct nameidata nd; | |||
| 890 | int error; | |||
| 891 | ||||
| 892 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | AUDITVNODE1,NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000, pathseg, path, -100, ((void *)0), 0, td) | |||
| 893 | pathseg, path, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000, pathseg, path, -100, ((void *)0), 0, td); | |||
| 894 | if ((error = namei(&nd)) != 0) | |||
| 895 | return (error); | |||
| 896 | if ((error = change_dir(nd.ni_vp, td)) != 0) { | |||
| 897 | vput(nd.ni_vp); | |||
| 898 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 899 | return (error); | |||
| 900 | } | |||
| 901 | VOP_UNLOCK(nd.ni_vp, 0); | |||
| 902 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 903 | pwd_chdir(td, nd.ni_vp); | |||
| 904 | return (0); | |||
| 905 | } | |||
| 906 | ||||
| 907 | /* | |||
| 908 | * Change notion of root (``/'') directory. | |||
| 909 | */ | |||
| 910 | #ifndef _SYS_SYSPROTO_H_ | |||
| 911 | struct chroot_args { | |||
| 912 | char *path; | |||
| 913 | }; | |||
| 914 | #endif | |||
| 915 | int | |||
| 916 | sys_chroot(struct thread *td, struct chroot_args *uap) | |||
| 917 | { | |||
| 918 | struct nameidata nd; | |||
| 919 | int error; | |||
| 920 | ||||
| 921 | error = priv_check(td, PRIV_VFS_CHROOT318); | |||
| 922 | if (error != 0) | |||
| 923 | return (error); | |||
| 924 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | AUDITVNODE1,NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000, UIO_USERSPACE, uap->path, -100, ((void *)0), 0, td) | |||
| 925 | UIO_USERSPACE, uap->path, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000, UIO_USERSPACE, uap->path, -100, ((void *)0), 0, td); | |||
| 926 | error = namei(&nd); | |||
| 927 | if (error != 0) | |||
| 928 | goto error; | |||
| 929 | error = change_dir(nd.ni_vp, td); | |||
| 930 | if (error != 0) | |||
| 931 | goto e_vunlock; | |||
| 932 | #ifdef MAC1 | |||
| 933 | error = mac_vnode_check_chroot(td->td_ucred, nd.ni_vp); | |||
| 934 | if (error != 0) | |||
| 935 | goto e_vunlock; | |||
| 936 | #endif | |||
| 937 | VOP_UNLOCK(nd.ni_vp, 0); | |||
| 938 | error = pwd_chroot(td, nd.ni_vp); | |||
| 939 | vrele(nd.ni_vp); | |||
| 940 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 941 | return (error); | |||
| 942 | e_vunlock: | |||
| 943 | vput(nd.ni_vp); | |||
| 944 | error: | |||
| 945 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 946 | return (error); | |||
| 947 | } | |||
| 948 | ||||
| 949 | /* | |||
| 950 | * Common routine for chroot and chdir. Callers must provide a locked vnode | |||
| 951 | * instance. | |||
| 952 | */ | |||
| 953 | int | |||
| 954 | change_dir(struct vnode *vp, struct thread *td) | |||
| 955 | { | |||
| 956 | #ifdef MAC1 | |||
| 957 | int error; | |||
| 958 | #endif | |||
| 959 | ||||
| 960 | ASSERT_VOP_LOCKED(vp, "change_dir(): vp not locked")((void)0); | |||
| 961 | if (vp->v_type != VDIR) | |||
| 962 | return (ENOTDIR20); | |||
| 963 | #ifdef MAC1 | |||
| 964 | error = mac_vnode_check_chdir(td->td_ucred, vp); | |||
| 965 | if (error != 0) | |||
| 966 | return (error); | |||
| 967 | #endif | |||
| 968 | return (VOP_ACCESS(vp, VEXEC000000000100, td->td_ucred, td)); | |||
| 969 | } | |||
| 970 | ||||
| 971 | static __inline void | |||
| 972 | flags_to_rights(int flags, cap_rights_t *rightsp) | |||
| 973 | { | |||
| 974 | ||||
| 975 | if (flags & O_EXEC0x00040000) { | |||
| 976 | cap_rights_set(rightsp, CAP_FEXECVE)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000000080ULL )), 0ULL); | |||
| 977 | } else { | |||
| 978 | switch ((flags & O_ACCMODE0x0003)) { | |||
| 979 | case O_RDONLY0x0000: | |||
| 980 | cap_rights_set(rightsp, CAP_READ)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000000001ULL )), 0ULL); | |||
| 981 | break; | |||
| 982 | case O_RDWR0x0002: | |||
| 983 | cap_rights_set(rightsp, CAP_READ)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000000001ULL )), 0ULL); | |||
| 984 | /* FALLTHROUGH */ | |||
| 985 | case O_WRONLY0x0001: | |||
| 986 | cap_rights_set(rightsp, CAP_WRITE)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000000002ULL )), 0ULL); | |||
| 987 | if (!(flags & (O_APPEND0x0008 | O_TRUNC0x0400))) | |||
| 988 | cap_rights_set(rightsp, CAP_SEEK)__cap_rights_set(rightsp, (((1ULL << (57 + (0))) | (0x0000000000000004ULL )) | 0x0000000000000008ULL), 0ULL); | |||
| 989 | break; | |||
| 990 | } | |||
| 991 | } | |||
| 992 | ||||
| 993 | if (flags & O_CREAT0x0200) | |||
| 994 | cap_rights_set(rightsp, CAP_CREATE)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000000040ULL )), 0ULL); | |||
| 995 | ||||
| 996 | if (flags & O_TRUNC0x0400) | |||
| 997 | cap_rights_set(rightsp, CAP_FTRUNCATE)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000000200ULL )), 0ULL); | |||
| 998 | ||||
| 999 | if (flags & (O_SYNC0x0080 | O_FSYNC0x0080)) | |||
| 1000 | cap_rights_set(rightsp, CAP_FSYNC)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000000100ULL )), 0ULL); | |||
| 1001 | ||||
| 1002 | if (flags & (O_EXLOCK0x0020 | O_SHLOCK0x0010)) | |||
| 1003 | cap_rights_set(rightsp, CAP_FLOCK)__cap_rights_set(rightsp, ((1ULL << (57 + (0))) | (0x0000000000010000ULL )), 0ULL); | |||
| 1004 | } | |||
| 1005 | ||||
| 1006 | /* | |||
| 1007 | * Check permissions, allocate an open file structure, and call the device | |||
| 1008 | * open routine if any. | |||
| 1009 | */ | |||
| 1010 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1011 | struct open_args { | |||
| 1012 | char *path; | |||
| 1013 | int flags; | |||
| 1014 | int mode; | |||
| 1015 | }; | |||
| 1016 | #endif | |||
| 1017 | int | |||
| 1018 | sys_open(struct thread *td, struct open_args *uap) | |||
| 1019 | { | |||
| 1020 | ||||
| 1021 | return (kern_openat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 1022 | uap->flags, uap->mode)); | |||
| 1023 | } | |||
| 1024 | ||||
| 1025 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1026 | struct openat_args { | |||
| 1027 | int fd; | |||
| 1028 | char *path; | |||
| 1029 | int flag; | |||
| 1030 | int mode; | |||
| 1031 | }; | |||
| 1032 | #endif | |||
| 1033 | int | |||
| 1034 | sys_openat(struct thread *td, struct openat_args *uap) | |||
| 1035 | { | |||
| 1036 | ||||
| 1037 | AUDIT_ARG_FD(uap->fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((uap->fd)); } while (0); | |||
| 1038 | return (kern_openat(td, uap->fd, uap->path, UIO_USERSPACE, uap->flag, | |||
| 1039 | uap->mode)); | |||
| 1040 | } | |||
| 1041 | ||||
| 1042 | int | |||
| 1043 | kern_openat(struct thread *td, int fd, const char *path, enum uio_seg pathseg, | |||
| 1044 | int flags, int mode) | |||
| 1045 | { | |||
| 1046 | struct proc *p = td->td_proc; | |||
| 1047 | struct filedesc *fdp = p->p_fd; | |||
| 1048 | struct file *fp; | |||
| 1049 | struct vnode *vp; | |||
| 1050 | struct nameidata nd; | |||
| 1051 | cap_rights_t rights; | |||
| 1052 | int cmode, error, indx; | |||
| 1053 | ||||
| 1054 | indx = -1; | |||
| 1055 | ||||
| 1056 | AUDIT_ARG_FFLAGS(flags)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fflags((flags)); } while (0); | |||
| 1057 | AUDIT_ARG_MODE(mode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_mode((mode)); } while (0); | |||
| 1058 | cap_rights_init(&rights, CAP_LOOKUP)__cap_rights_init(0, &rights, ((1ULL << (57 + (0))) | (0x0000000000000400ULL)), 0ULL); | |||
| 1059 | flags_to_rights(flags, &rights); | |||
| 1060 | /* | |||
| 1061 | * Only one of the O_EXEC, O_RDONLY, O_WRONLY and O_RDWR flags | |||
| 1062 | * may be specified. | |||
| 1063 | */ | |||
| 1064 | if (flags & O_EXEC0x00040000) { | |||
| 1065 | if (flags & O_ACCMODE0x0003) | |||
| 1066 | return (EINVAL22); | |||
| 1067 | } else if ((flags & O_ACCMODE0x0003) == O_ACCMODE0x0003) { | |||
| 1068 | return (EINVAL22); | |||
| 1069 | } else { | |||
| 1070 | flags = FFLAGS(flags)((flags) & 0x00040000 ? (flags) : (flags) + 1); | |||
| 1071 | } | |||
| 1072 | ||||
| 1073 | /* | |||
| 1074 | * Allocate a file structure. The descriptor to reference it | |||
| 1075 | * is allocated and set by finstall() below. | |||
| 1076 | */ | |||
| 1077 | error = falloc_noinstall(td, &fp); | |||
| 1078 | if (error != 0) | |||
| 1079 | return (error); | |||
| 1080 | /* | |||
| 1081 | * An extra reference on `fp' has been held for us by | |||
| 1082 | * falloc_noinstall(). | |||
| 1083 | */ | |||
| 1084 | /* Set the flags early so the finit in devfs can pick them up. */ | |||
| 1085 | fp->f_flag = flags & FMASK(0x0001|0x0002|0x0008|0x0040|0x0080|0x0004|0x00010000|0x00040000 ); | |||
| 1086 | cmode = ((mode & ~fdp->fd_cmask) & ALLPERMS(0004000|0002000|0001000|0000700|0000070|0000007)) & ~S_ISTXT0001000; | |||
| 1087 | NDINIT_ATRIGHTS(&nd, LOOKUP, FOLLOW | AUDITVNODE1, pathseg, path, fd,NDINIT_ALL(&nd, 0, 0x0040 | 0x04000000, pathseg, path, fd , ((void *)0), &rights, td) | |||
| 1088 | &rights, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x04000000, pathseg, path, fd , ((void *)0), &rights, td); | |||
| 1089 | td->td_dupfd = -1; /* XXX check for fdopen */ | |||
| 1090 | error = vn_open(&nd, &flags, cmode, fp); | |||
| 1091 | if (error != 0) { | |||
| 1092 | /* | |||
| 1093 | * If the vn_open replaced the method vector, something | |||
| 1094 | * wonderous happened deep below and we just pass it up | |||
| 1095 | * pretending we know what we do. | |||
| 1096 | */ | |||
| 1097 | if (error == ENXIO6 && fp->f_ops != &badfileops) | |||
| 1098 | goto success; | |||
| 1099 | ||||
| 1100 | /* | |||
| 1101 | * Handle special fdopen() case. bleh. | |||
| 1102 | * | |||
| 1103 | * Don't do this for relative (capability) lookups; we don't | |||
| 1104 | * understand exactly what would happen, and we don't think | |||
| 1105 | * that it ever should. | |||
| 1106 | */ | |||
| 1107 | if ((nd.ni_lcf & NI_LCF_STRICTRELATIVE0x0001) == 0 && | |||
| 1108 | (error == ENODEV19 || error == ENXIO6) && | |||
| 1109 | td->td_dupfd >= 0) { | |||
| 1110 | error = dupfdopen(td, fdp, td->td_dupfd, flags, error, | |||
| 1111 | &indx); | |||
| 1112 | if (error == 0) | |||
| 1113 | goto success; | |||
| 1114 | } | |||
| 1115 | ||||
| 1116 | goto bad; | |||
| 1117 | } | |||
| 1118 | td->td_dupfd = 0; | |||
| 1119 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1120 | vp = nd.ni_vp; | |||
| 1121 | ||||
| 1122 | /* | |||
| 1123 | * Store the vnode, for any f_type. Typically, the vnode use | |||
| 1124 | * count is decremented by direct call to vn_closefile() for | |||
| 1125 | * files that switched type in the cdevsw fdopen() method. | |||
| 1126 | */ | |||
| 1127 | fp->f_vnode = vp; | |||
| 1128 | /* | |||
| 1129 | * If the file wasn't claimed by devfs bind it to the normal | |||
| 1130 | * vnode operations here. | |||
| 1131 | */ | |||
| 1132 | if (fp->f_ops == &badfileops) { | |||
| 1133 | KASSERT(vp->v_type != VFIFO, ("Unexpected fifo."))do { if (__builtin_expect((!(vp->v_type != VFIFO)), 0)) panic ("Unexpected fifo."); } while (0); | |||
| 1134 | fp->f_seqcount = 1; | |||
| 1135 | finit(fp, (flags & FMASK(0x0001|0x0002|0x0008|0x0040|0x0080|0x0004|0x00010000|0x00040000 )) | (fp->f_flag & FHASLOCK0x4000), | |||
| 1136 | DTYPE_VNODE1, vp, &vnops); | |||
| 1137 | } | |||
| 1138 | ||||
| 1139 | VOP_UNLOCK(vp, 0); | |||
| 1140 | if (flags & O_TRUNC0x0400) { | |||
| 1141 | error = fo_truncate(fp, 0, td->td_ucred, td); | |||
| 1142 | if (error != 0) | |||
| 1143 | goto bad; | |||
| 1144 | } | |||
| 1145 | success: | |||
| 1146 | /* | |||
| 1147 | * If we haven't already installed the FD (for dupfdopen), do so now. | |||
| 1148 | */ | |||
| 1149 | if (indx == -1) { | |||
| 1150 | struct filecaps *fcaps; | |||
| 1151 | ||||
| 1152 | #ifdef CAPABILITIES1 | |||
| 1153 | if ((nd.ni_lcf & NI_LCF_STRICTRELATIVE0x0001) != 0) | |||
| 1154 | fcaps = &nd.ni_filecaps; | |||
| 1155 | else | |||
| 1156 | #endif | |||
| 1157 | fcaps = NULL((void *)0); | |||
| 1158 | error = finstall(td, fp, &indx, flags, fcaps); | |||
| 1159 | /* On success finstall() consumes fcaps. */ | |||
| 1160 | if (error != 0) { | |||
| 1161 | filecaps_free(&nd.ni_filecaps); | |||
| 1162 | goto bad; | |||
| 1163 | } | |||
| 1164 | } else { | |||
| 1165 | filecaps_free(&nd.ni_filecaps); | |||
| 1166 | } | |||
| 1167 | ||||
| 1168 | /* | |||
| 1169 | * Release our private reference, leaving the one associated with | |||
| 1170 | * the descriptor table intact. | |||
| 1171 | */ | |||
| 1172 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 1173 | td->td_retvaltd_uretoff.tdu_retval[0] = indx; | |||
| 1174 | return (0); | |||
| 1175 | bad: | |||
| 1176 | KASSERT(indx == -1, ("indx=%d, should be -1", indx))do { if (__builtin_expect((!(indx == -1)), 0)) panic ("indx=%d, should be -1" , indx); } while (0); | |||
| 1177 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 1178 | return (error); | |||
| 1179 | } | |||
| 1180 | ||||
| 1181 | #ifdef COMPAT_43 | |||
| 1182 | /* | |||
| 1183 | * Create a file. | |||
| 1184 | */ | |||
| 1185 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1186 | struct ocreat_args { | |||
| 1187 | char *path; | |||
| 1188 | int mode; | |||
| 1189 | }; | |||
| 1190 | #endif | |||
| 1191 | int | |||
| 1192 | ocreat(struct thread *td, struct ocreat_args *uap) | |||
| 1193 | { | |||
| 1194 | ||||
| 1195 | return (kern_openat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 1196 | O_WRONLY0x0001 | O_CREAT0x0200 | O_TRUNC0x0400, uap->mode)); | |||
| 1197 | } | |||
| 1198 | #endif /* COMPAT_43 */ | |||
| 1199 | ||||
| 1200 | /* | |||
| 1201 | * Create a special file. | |||
| 1202 | */ | |||
| 1203 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1204 | struct mknodat_args { | |||
| 1205 | int fd; | |||
| 1206 | char *path; | |||
| 1207 | mode_t mode; | |||
| 1208 | dev_t dev; | |||
| 1209 | }; | |||
| 1210 | #endif | |||
| 1211 | int | |||
| 1212 | sys_mknodat(struct thread *td, struct mknodat_args *uap) | |||
| 1213 | { | |||
| 1214 | ||||
| 1215 | return (kern_mknodat(td, uap->fd, uap->path, UIO_USERSPACE, uap->mode, | |||
| 1216 | uap->dev)); | |||
| 1217 | } | |||
| 1218 | ||||
| 1219 | #if defined(COMPAT_FREEBSD111) | |||
| 1220 | int | |||
| 1221 | freebsd11_mknod(struct thread *td, | |||
| 1222 | struct freebsd11_mknod_args *uap) | |||
| 1223 | { | |||
| 1224 | ||||
| 1225 | return (kern_mknodat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 1226 | uap->mode, uap->dev)); | |||
| 1227 | } | |||
| 1228 | ||||
| 1229 | int | |||
| 1230 | freebsd11_mknodat(struct thread *td, | |||
| 1231 | struct freebsd11_mknodat_args *uap) | |||
| 1232 | { | |||
| 1233 | ||||
| 1234 | return (kern_mknodat(td, uap->fd, uap->path, UIO_USERSPACE, uap->mode, | |||
| 1235 | uap->dev)); | |||
| 1236 | } | |||
| 1237 | #endif /* COMPAT_FREEBSD11 */ | |||
| 1238 | ||||
| 1239 | int | |||
| 1240 | kern_mknodat(struct thread *td, int fd, const char *path, enum uio_seg pathseg, | |||
| 1241 | int mode, dev_t dev) | |||
| 1242 | { | |||
| 1243 | struct vnode *vp; | |||
| 1244 | struct mount *mp; | |||
| 1245 | struct vattr vattr; | |||
| 1246 | struct nameidata nd; | |||
| 1247 | int error, whiteout = 0; | |||
| 1248 | ||||
| 1249 | AUDIT_ARG_MODE(mode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_mode((mode)); } while (0); | |||
| 1250 | AUDIT_ARG_DEV(dev)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_dev((dev)); } while (0); | |||
| 1251 | switch (mode & S_IFMT0170000) { | |||
| 1252 | case S_IFCHR0020000: | |||
| 1253 | case S_IFBLK0060000: | |||
| 1254 | error = priv_check(td, PRIV_VFS_MKNOD_DEV331); | |||
| 1255 | if (error == 0 && dev == VNOVAL(-1)) | |||
| 1256 | error = EINVAL22; | |||
| 1257 | break; | |||
| 1258 | case S_IFWHT0160000: | |||
| 1259 | error = priv_check(td, PRIV_VFS_MKNOD_WHT332); | |||
| 1260 | break; | |||
| 1261 | case S_IFIFO0010000: | |||
| 1262 | if (dev == 0) | |||
| 1263 | return (kern_mkfifoat(td, fd, path, pathseg, mode)); | |||
| 1264 | /* FALLTHROUGH */ | |||
| 1265 | default: | |||
| 1266 | error = EINVAL22; | |||
| 1267 | break; | |||
| 1268 | } | |||
| 1269 | if (error != 0) | |||
| 1270 | return (error); | |||
| 1271 | restart: | |||
| 1272 | bwillwrite(); | |||
| 1273 | NDINIT_ATRIGHTS(&nd, CREATE, LOCKPARENT | SAVENAME | AUDITVNODE1 |NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , pathseg, path, fd, ((void *)0), &cap_mknodat_rights, td ) | |||
| 1274 | NOCACHE, pathseg, path, fd, &cap_mknodat_rights,NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , pathseg, path, fd, ((void *)0), &cap_mknodat_rights, td ) | |||
| 1275 | td)NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , pathseg, path, fd, ((void *)0), &cap_mknodat_rights, td ); | |||
| 1276 | if ((error = namei(&nd)) != 0) | |||
| 1277 | return (error); | |||
| 1278 | vp = nd.ni_vp; | |||
| 1279 | if (vp != NULL((void *)0)) { | |||
| 1280 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1281 | if (vp == nd.ni_dvp) | |||
| 1282 | vrele(nd.ni_dvp); | |||
| 1283 | else | |||
| 1284 | vput(nd.ni_dvp); | |||
| 1285 | vrele(vp); | |||
| 1286 | return (EEXIST17); | |||
| 1287 | } else { | |||
| 1288 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 1289 | vattr.va_mode = (mode & ALLPERMS(0004000|0002000|0001000|0000700|0000070|0000007)) & | |||
| 1290 | ~td->td_proc->p_fd->fd_cmask; | |||
| 1291 | vattr.va_rdev = dev; | |||
| 1292 | whiteout = 0; | |||
| 1293 | ||||
| 1294 | switch (mode & S_IFMT0170000) { | |||
| 1295 | case S_IFCHR0020000: | |||
| 1296 | vattr.va_type = VCHR; | |||
| 1297 | break; | |||
| 1298 | case S_IFBLK0060000: | |||
| 1299 | vattr.va_type = VBLK; | |||
| 1300 | break; | |||
| 1301 | case S_IFWHT0160000: | |||
| 1302 | whiteout = 1; | |||
| 1303 | break; | |||
| 1304 | default: | |||
| 1305 | panic("kern_mknod: invalid mode"); | |||
| 1306 | } | |||
| 1307 | } | |||
| 1308 | if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT0x0002) != 0) { | |||
| 1309 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1310 | vput(nd.ni_dvp); | |||
| 1311 | if ((error = vn_start_write(NULL((void *)0), &mp, V_XSLEEP0x0004 | PCATCH0x100)) != 0) | |||
| 1312 | return (error); | |||
| 1313 | goto restart; | |||
| 1314 | } | |||
| 1315 | #ifdef MAC1 | |||
| 1316 | if (error == 0 && !whiteout) | |||
| 1317 | error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp, | |||
| 1318 | &nd.ni_cnd, &vattr); | |||
| 1319 | #endif | |||
| 1320 | if (error == 0) { | |||
| 1321 | if (whiteout) | |||
| 1322 | error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, CREATE1); | |||
| 1323 | else { | |||
| 1324 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, | |||
| 1325 | &nd.ni_cnd, &vattr); | |||
| 1326 | if (error == 0) | |||
| 1327 | vput(nd.ni_vp); | |||
| 1328 | } | |||
| 1329 | } | |||
| 1330 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1331 | vput(nd.ni_dvp); | |||
| 1332 | vn_finished_write(mp); | |||
| 1333 | return (error); | |||
| 1334 | } | |||
| 1335 | ||||
| 1336 | /* | |||
| 1337 | * Create a named pipe. | |||
| 1338 | */ | |||
| 1339 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1340 | struct mkfifo_args { | |||
| 1341 | char *path; | |||
| 1342 | int mode; | |||
| 1343 | }; | |||
| 1344 | #endif | |||
| 1345 | int | |||
| 1346 | sys_mkfifo(struct thread *td, struct mkfifo_args *uap) | |||
| 1347 | { | |||
| 1348 | ||||
| 1349 | return (kern_mkfifoat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 1350 | uap->mode)); | |||
| 1351 | } | |||
| 1352 | ||||
| 1353 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1354 | struct mkfifoat_args { | |||
| 1355 | int fd; | |||
| 1356 | char *path; | |||
| 1357 | mode_t mode; | |||
| 1358 | }; | |||
| 1359 | #endif | |||
| 1360 | int | |||
| 1361 | sys_mkfifoat(struct thread *td, struct mkfifoat_args *uap) | |||
| 1362 | { | |||
| 1363 | ||||
| 1364 | return (kern_mkfifoat(td, uap->fd, uap->path, UIO_USERSPACE, | |||
| 1365 | uap->mode)); | |||
| 1366 | } | |||
| 1367 | ||||
| 1368 | int | |||
| 1369 | kern_mkfifoat(struct thread *td, int fd, const char *path, | |||
| 1370 | enum uio_seg pathseg, int mode) | |||
| 1371 | { | |||
| 1372 | struct mount *mp; | |||
| 1373 | struct vattr vattr; | |||
| 1374 | struct nameidata nd; | |||
| 1375 | int error; | |||
| 1376 | ||||
| 1377 | AUDIT_ARG_MODE(mode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_mode((mode)); } while (0); | |||
| 1378 | restart: | |||
| 1379 | bwillwrite(); | |||
| 1380 | NDINIT_ATRIGHTS(&nd, CREATE, LOCKPARENT | SAVENAME | AUDITVNODE1 |NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , pathseg, path, fd, ((void *)0), &cap_mkfifoat_rights, td ) | |||
| 1381 | NOCACHE, pathseg, path, fd, &cap_mkfifoat_rights,NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , pathseg, path, fd, ((void *)0), &cap_mkfifoat_rights, td ) | |||
| 1382 | td)NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , pathseg, path, fd, ((void *)0), &cap_mkfifoat_rights, td ); | |||
| 1383 | if ((error = namei(&nd)) != 0) | |||
| 1384 | return (error); | |||
| 1385 | if (nd.ni_vp != NULL((void *)0)) { | |||
| 1386 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1387 | if (nd.ni_vp == nd.ni_dvp) | |||
| 1388 | vrele(nd.ni_dvp); | |||
| 1389 | else | |||
| 1390 | vput(nd.ni_dvp); | |||
| 1391 | vrele(nd.ni_vp); | |||
| 1392 | return (EEXIST17); | |||
| 1393 | } | |||
| 1394 | if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT0x0002) != 0) { | |||
| 1395 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1396 | vput(nd.ni_dvp); | |||
| 1397 | if ((error = vn_start_write(NULL((void *)0), &mp, V_XSLEEP0x0004 | PCATCH0x100)) != 0) | |||
| 1398 | return (error); | |||
| 1399 | goto restart; | |||
| 1400 | } | |||
| 1401 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 1402 | vattr.va_type = VFIFO; | |||
| 1403 | vattr.va_mode = (mode & ALLPERMS(0004000|0002000|0001000|0000700|0000070|0000007)) & ~td->td_proc->p_fd->fd_cmask; | |||
| 1404 | #ifdef MAC1 | |||
| 1405 | error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd, | |||
| 1406 | &vattr); | |||
| 1407 | if (error != 0) | |||
| 1408 | goto out; | |||
| 1409 | #endif | |||
| 1410 | error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |||
| 1411 | if (error == 0) | |||
| 1412 | vput(nd.ni_vp); | |||
| 1413 | #ifdef MAC1 | |||
| 1414 | out: | |||
| 1415 | #endif | |||
| 1416 | vput(nd.ni_dvp); | |||
| 1417 | vn_finished_write(mp); | |||
| 1418 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1419 | return (error); | |||
| 1420 | } | |||
| 1421 | ||||
| 1422 | /* | |||
| 1423 | * Make a hard file link. | |||
| 1424 | */ | |||
| 1425 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1426 | struct link_args { | |||
| 1427 | char *path; | |||
| 1428 | char *link; | |||
| 1429 | }; | |||
| 1430 | #endif | |||
| 1431 | int | |||
| 1432 | sys_link(struct thread *td, struct link_args *uap) | |||
| 1433 | { | |||
| 1434 | ||||
| 1435 | return (kern_linkat(td, AT_FDCWD-100, AT_FDCWD-100, uap->path, uap->link, | |||
| 1436 | UIO_USERSPACE, FOLLOW0x0040)); | |||
| 1437 | } | |||
| 1438 | ||||
| 1439 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1440 | struct linkat_args { | |||
| 1441 | int fd1; | |||
| 1442 | char *path1; | |||
| 1443 | int fd2; | |||
| 1444 | char *path2; | |||
| 1445 | int flag; | |||
| 1446 | }; | |||
| 1447 | #endif | |||
| 1448 | int | |||
| 1449 | sys_linkat(struct thread *td, struct linkat_args *uap) | |||
| 1450 | { | |||
| 1451 | int flag; | |||
| 1452 | ||||
| 1453 | flag = uap->flag; | |||
| 1454 | if ((flag & ~(AT_SYMLINK_FOLLOW0x0400 | AT_BENEATH0x1000)) != 0) | |||
| 1455 | return (EINVAL22); | |||
| 1456 | ||||
| 1457 | return (kern_linkat(td, uap->fd1, uap->fd2, uap->path1, uap->path2, | |||
| 1458 | UIO_USERSPACE, ((flag & AT_SYMLINK_FOLLOW0x0400) != 0 ? FOLLOW0x0040 : | |||
| 1459 | NOFOLLOW0x0000) | ((flag & AT_BENEATH0x1000) != 0 ? BENEATH0x0080 : 0))); | |||
| 1460 | } | |||
| 1461 | ||||
| 1462 | int hardlink_check_uid = 0; | |||
| 1463 | SYSCTL_INT(_security_bsd, OID_AUTO, hardlink_check_uid, CTLFLAG_RW,static struct sysctl_oid sysctl___security_bsd_hardlink_check_uid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_uid), .oid_arg2 = (0), .oid_name = ("hardlink_check_uid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "users", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_uid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_uid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_uid)), "compile-time assertion failed" ) | |||
| 1464 | &hardlink_check_uid, 0,static struct sysctl_oid sysctl___security_bsd_hardlink_check_uid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_uid), .oid_arg2 = (0), .oid_name = ("hardlink_check_uid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "users", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_uid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_uid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_uid)), "compile-time assertion failed" ) | |||
| 1465 | "Unprivileged processes cannot create hard links to files owned by other "static struct sysctl_oid sysctl___security_bsd_hardlink_check_uid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_uid), .oid_arg2 = (0), .oid_name = ("hardlink_check_uid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "users", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_uid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_uid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_uid)), "compile-time assertion failed" ) | |||
| 1466 | "users")static struct sysctl_oid sysctl___security_bsd_hardlink_check_uid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_uid), .oid_arg2 = (0), .oid_name = ("hardlink_check_uid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "users", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_uid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_uid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_uid)), "compile-time assertion failed" ); | |||
| 1467 | static int hardlink_check_gid = 0; | |||
| 1468 | SYSCTL_INT(_security_bsd, OID_AUTO, hardlink_check_gid, CTLFLAG_RW,static struct sysctl_oid sysctl___security_bsd_hardlink_check_gid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_gid), .oid_arg2 = (0), .oid_name = ("hardlink_check_gid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "groups", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_gid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_gid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_gid)), "compile-time assertion failed" ) | |||
| 1469 | &hardlink_check_gid, 0,static struct sysctl_oid sysctl___security_bsd_hardlink_check_gid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_gid), .oid_arg2 = (0), .oid_name = ("hardlink_check_gid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "groups", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_gid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_gid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_gid)), "compile-time assertion failed" ) | |||
| 1470 | "Unprivileged processes cannot create hard links to files owned by other "static struct sysctl_oid sysctl___security_bsd_hardlink_check_gid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_gid), .oid_arg2 = (0), .oid_name = ("hardlink_check_gid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "groups", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_gid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_gid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_gid)), "compile-time assertion failed" ) | |||
| 1471 | "groups")static struct sysctl_oid sysctl___security_bsd_hardlink_check_gid = { .oid_parent = ((&(&sysctl___security_bsd)->oid_children )), .oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &hardlink_check_gid), .oid_arg2 = (0), .oid_name = ("hardlink_check_gid" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Unprivileged processes cannot create hard links to files owned by other " "groups", .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___security_bsd_hardlink_check_gid __attribute__((__section__("set_" "sysctl_set"))) __attribute__ ((__used__)) = &(sysctl___security_bsd_hardlink_check_gid ); _Static_assert(((((0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000)) & 0) == 2) && sizeof (int) == sizeof(*(&hardlink_check_gid)), "compile-time assertion failed" ); | |||
| 1472 | ||||
| 1473 | static int | |||
| 1474 | can_hardlink(struct vnode *vp, struct ucred *cred) | |||
| 1475 | { | |||
| 1476 | struct vattr va; | |||
| 1477 | int error; | |||
| 1478 | ||||
| 1479 | if (!hardlink_check_uid && !hardlink_check_gid) | |||
| 1480 | return (0); | |||
| 1481 | ||||
| 1482 | error = VOP_GETATTR(vp, &va, cred); | |||
| 1483 | if (error != 0) | |||
| 1484 | return (error); | |||
| 1485 | ||||
| 1486 | if (hardlink_check_uid && cred->cr_uid != va.va_uid) { | |||
| 1487 | error = priv_check_cred(cred, PRIV_VFS_LINK329); | |||
| 1488 | if (error != 0) | |||
| 1489 | return (error); | |||
| 1490 | } | |||
| 1491 | ||||
| 1492 | if (hardlink_check_gid && !groupmember(va.va_gid, cred)) { | |||
| 1493 | error = priv_check_cred(cred, PRIV_VFS_LINK329); | |||
| 1494 | if (error != 0) | |||
| 1495 | return (error); | |||
| 1496 | } | |||
| 1497 | ||||
| 1498 | return (0); | |||
| 1499 | } | |||
| 1500 | ||||
| 1501 | int | |||
| 1502 | kern_linkat(struct thread *td, int fd1, int fd2, const char *path1, | |||
| 1503 | const char *path2, enum uio_seg segflag, int follow) | |||
| 1504 | { | |||
| 1505 | struct nameidata nd; | |||
| 1506 | int error; | |||
| 1507 | ||||
| 1508 | do { | |||
| 1509 | bwillwrite(); | |||
| 1510 | NDINIT_ATRIGHTS(&nd, LOOKUP, follow | AUDITVNODE1, segflag,NDINIT_ALL(&nd, 0, follow | 0x04000000, segflag, path1, fd1 , ((void *)0), &cap_linkat_source_rights, td) | |||
| 1511 | path1, fd1, &cap_linkat_source_rights, td)NDINIT_ALL(&nd, 0, follow | 0x04000000, segflag, path1, fd1 , ((void *)0), &cap_linkat_source_rights, td); | |||
| 1512 | if ((error = namei(&nd)) != 0) | |||
| 1513 | return (error); | |||
| 1514 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1515 | error = kern_linkat_vp(td, nd.ni_vp, fd2, path2, segflag); | |||
| 1516 | } while (error == EAGAIN35); | |||
| 1517 | return (error); | |||
| 1518 | } | |||
| 1519 | ||||
| 1520 | static int | |||
| 1521 | kern_linkat_vp(struct thread *td, struct vnode *vp, int fd, const char *path, | |||
| 1522 | enum uio_seg segflag) | |||
| 1523 | { | |||
| 1524 | struct nameidata nd; | |||
| 1525 | struct mount *mp; | |||
| 1526 | int error; | |||
| 1527 | ||||
| 1528 | if (vp->v_type == VDIR) { | |||
| 1529 | vrele(vp); | |||
| 1530 | return (EPERM1); /* POSIX */ | |||
| 1531 | } | |||
| 1532 | NDINIT_ATRIGHTS(&nd, CREATE,NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x08000000 | 0x0020 , segflag, path, fd, ((void *)0), &cap_linkat_target_rights , td) | |||
| 1533 | LOCKPARENT | SAVENAME | AUDITVNODE2 | NOCACHE, segflag, path, fd,NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x08000000 | 0x0020 , segflag, path, fd, ((void *)0), &cap_linkat_target_rights , td) | |||
| 1534 | &cap_linkat_target_rights, td)NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x08000000 | 0x0020 , segflag, path, fd, ((void *)0), &cap_linkat_target_rights , td); | |||
| 1535 | if ((error = namei(&nd)) == 0) { | |||
| 1536 | if (nd.ni_vp != NULL((void *)0)) { | |||
| 1537 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1538 | if (nd.ni_dvp == nd.ni_vp) | |||
| 1539 | vrele(nd.ni_dvp); | |||
| 1540 | else | |||
| 1541 | vput(nd.ni_dvp); | |||
| 1542 | vrele(nd.ni_vp); | |||
| 1543 | vrele(vp); | |||
| 1544 | return (EEXIST17); | |||
| 1545 | } else if (nd.ni_dvp->v_mount != vp->v_mount) { | |||
| 1546 | /* | |||
| 1547 | * Cross-device link. No need to recheck | |||
| 1548 | * vp->v_type, since it cannot change, except | |||
| 1549 | * to VBAD. | |||
| 1550 | */ | |||
| 1551 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1552 | vput(nd.ni_dvp); | |||
| 1553 | vrele(vp); | |||
| 1554 | return (EXDEV18); | |||
| 1555 | } else if ((error = vn_lock(vp, LK_EXCLUSIVE)_vn_lock(vp, 0x080000, "/root/freebsd/sys/kern/vfs_syscalls.c" , 1555)) == 0) { | |||
| 1556 | error = can_hardlink(vp, td->td_ucred); | |||
| 1557 | #ifdef MAC1 | |||
| 1558 | if (error == 0) | |||
| 1559 | error = mac_vnode_check_link(td->td_ucred, | |||
| 1560 | nd.ni_dvp, vp, &nd.ni_cnd); | |||
| 1561 | #endif | |||
| 1562 | if (error != 0) { | |||
| 1563 | vput(vp); | |||
| 1564 | vput(nd.ni_dvp); | |||
| 1565 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1566 | return (error); | |||
| 1567 | } | |||
| 1568 | error = vn_start_write(vp, &mp, V_NOWAIT0x0002); | |||
| 1569 | if (error != 0) { | |||
| 1570 | vput(vp); | |||
| 1571 | vput(nd.ni_dvp); | |||
| 1572 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1573 | error = vn_start_write(NULL((void *)0), &mp, | |||
| 1574 | V_XSLEEP0x0004 | PCATCH0x100); | |||
| 1575 | if (error != 0) | |||
| 1576 | return (error); | |||
| 1577 | return (EAGAIN35); | |||
| 1578 | } | |||
| 1579 | error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); | |||
| 1580 | VOP_UNLOCK(vp, 0); | |||
| 1581 | vput(nd.ni_dvp); | |||
| 1582 | vn_finished_write(mp); | |||
| 1583 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1584 | } else { | |||
| 1585 | vput(nd.ni_dvp); | |||
| 1586 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1587 | vrele(vp); | |||
| 1588 | return (EAGAIN35); | |||
| 1589 | } | |||
| 1590 | } | |||
| 1591 | vrele(vp); | |||
| 1592 | return (error); | |||
| 1593 | } | |||
| 1594 | ||||
| 1595 | /* | |||
| 1596 | * Make a symbolic link. | |||
| 1597 | */ | |||
| 1598 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1599 | struct symlink_args { | |||
| 1600 | char *path; | |||
| 1601 | char *link; | |||
| 1602 | }; | |||
| 1603 | #endif | |||
| 1604 | int | |||
| 1605 | sys_symlink(struct thread *td, struct symlink_args *uap) | |||
| 1606 | { | |||
| 1607 | ||||
| 1608 | return (kern_symlinkat(td, uap->path, AT_FDCWD-100, uap->link, | |||
| 1609 | UIO_USERSPACE)); | |||
| 1610 | } | |||
| 1611 | ||||
| 1612 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1613 | struct symlinkat_args { | |||
| 1614 | char *path; | |||
| 1615 | int fd; | |||
| 1616 | char *path2; | |||
| 1617 | }; | |||
| 1618 | #endif | |||
| 1619 | int | |||
| 1620 | sys_symlinkat(struct thread *td, struct symlinkat_args *uap) | |||
| 1621 | { | |||
| 1622 | ||||
| 1623 | return (kern_symlinkat(td, uap->path1, uap->fd, uap->path2, | |||
| 1624 | UIO_USERSPACE)); | |||
| 1625 | } | |||
| 1626 | ||||
| 1627 | int | |||
| 1628 | kern_symlinkat(struct thread *td, const char *path1, int fd, const char *path2, | |||
| 1629 | enum uio_seg segflg) | |||
| 1630 | { | |||
| 1631 | struct mount *mp; | |||
| 1632 | struct vattr vattr; | |||
| 1633 | const char *syspath; | |||
| 1634 | char *tmppath; | |||
| 1635 | struct nameidata nd; | |||
| 1636 | int error; | |||
| 1637 | ||||
| 1638 | if (segflg == UIO_SYSSPACE) { | |||
| 1639 | syspath = path1; | |||
| 1640 | } else { | |||
| 1641 | tmppath = uma_zalloc(namei_zone, M_WAITOK0x0002); | |||
| 1642 | if ((error = copyinstr(path1, tmppath, MAXPATHLEN1024, NULL((void *)0))) != 0) | |||
| 1643 | goto out; | |||
| 1644 | syspath = tmppath; | |||
| 1645 | } | |||
| 1646 | AUDIT_ARG_TEXT(syspath)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_text((syspath)); } while (0); | |||
| 1647 | restart: | |||
| 1648 | bwillwrite(); | |||
| 1649 | NDINIT_ATRIGHTS(&nd, CREATE, LOCKPARENT | SAVENAME | AUDITVNODE1 |NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , segflg, path2, fd, ((void *)0), &cap_symlinkat_rights, td ) | |||
| 1650 | NOCACHE, segflg, path2, fd, &cap_symlinkat_rights,NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , segflg, path2, fd, ((void *)0), &cap_symlinkat_rights, td ) | |||
| 1651 | td)NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , segflg, path2, fd, ((void *)0), &cap_symlinkat_rights, td ); | |||
| 1652 | if ((error = namei(&nd)) != 0) | |||
| 1653 | goto out; | |||
| 1654 | if (nd.ni_vp) { | |||
| 1655 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1656 | if (nd.ni_vp == nd.ni_dvp) | |||
| 1657 | vrele(nd.ni_dvp); | |||
| 1658 | else | |||
| 1659 | vput(nd.ni_dvp); | |||
| 1660 | vrele(nd.ni_vp); | |||
| 1661 | error = EEXIST17; | |||
| 1662 | goto out; | |||
| 1663 | } | |||
| 1664 | if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT0x0002) != 0) { | |||
| 1665 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1666 | vput(nd.ni_dvp); | |||
| 1667 | if ((error = vn_start_write(NULL((void *)0), &mp, V_XSLEEP0x0004 | PCATCH0x100)) != 0) | |||
| 1668 | goto out; | |||
| 1669 | goto restart; | |||
| 1670 | } | |||
| 1671 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 1672 | vattr.va_mode = ACCESSPERMS(0000700|0000070|0000007) &~ td->td_proc->p_fd->fd_cmask; | |||
| 1673 | #ifdef MAC1 | |||
| 1674 | vattr.va_type = VLNK; | |||
| 1675 | error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd, | |||
| 1676 | &vattr); | |||
| 1677 | if (error != 0) | |||
| 1678 | goto out2; | |||
| 1679 | #endif | |||
| 1680 | error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, syspath); | |||
| 1681 | if (error == 0) | |||
| 1682 | vput(nd.ni_vp); | |||
| 1683 | #ifdef MAC1 | |||
| 1684 | out2: | |||
| 1685 | #endif | |||
| 1686 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1687 | vput(nd.ni_dvp); | |||
| 1688 | vn_finished_write(mp); | |||
| 1689 | out: | |||
| 1690 | if (segflg != UIO_SYSSPACE) | |||
| 1691 | uma_zfree(namei_zone, tmppath); | |||
| 1692 | return (error); | |||
| 1693 | } | |||
| 1694 | ||||
| 1695 | /* | |||
| 1696 | * Delete a whiteout from the filesystem. | |||
| 1697 | */ | |||
| 1698 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1699 | struct undelete_args { | |||
| 1700 | char *path; | |||
| 1701 | }; | |||
| 1702 | #endif | |||
| 1703 | int | |||
| 1704 | sys_undelete(struct thread *td, struct undelete_args *uap) | |||
| 1705 | { | |||
| 1706 | struct mount *mp; | |||
| 1707 | struct nameidata nd; | |||
| 1708 | int error; | |||
| 1709 | ||||
| 1710 | restart: | |||
| 1711 | bwillwrite(); | |||
| 1712 | NDINIT(&nd, DELETE, LOCKPARENT | DOWHITEOUT | AUDITVNODE1,NDINIT_ALL(&nd, 2, 0x0008 | 0x00040000 | 0x04000000, UIO_USERSPACE , uap->path, -100, ((void *)0), 0, td) | |||
| 1713 | UIO_USERSPACE, uap->path, td)NDINIT_ALL(&nd, 2, 0x0008 | 0x00040000 | 0x04000000, UIO_USERSPACE , uap->path, -100, ((void *)0), 0, td); | |||
| 1714 | error = namei(&nd); | |||
| 1715 | if (error != 0) | |||
| 1716 | return (error); | |||
| 1717 | ||||
| 1718 | if (nd.ni_vp != NULLVP((struct vnode *)((void *)0)) || !(nd.ni_cnd.cn_flags & ISWHITEOUT0x00020000)) { | |||
| 1719 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1720 | if (nd.ni_vp == nd.ni_dvp) | |||
| 1721 | vrele(nd.ni_dvp); | |||
| 1722 | else | |||
| 1723 | vput(nd.ni_dvp); | |||
| 1724 | if (nd.ni_vp) | |||
| 1725 | vrele(nd.ni_vp); | |||
| 1726 | return (EEXIST17); | |||
| 1727 | } | |||
| 1728 | if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT0x0002) != 0) { | |||
| 1729 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1730 | vput(nd.ni_dvp); | |||
| 1731 | if ((error = vn_start_write(NULL((void *)0), &mp, V_XSLEEP0x0004 | PCATCH0x100)) != 0) | |||
| 1732 | return (error); | |||
| 1733 | goto restart; | |||
| 1734 | } | |||
| 1735 | error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, DELETE2); | |||
| 1736 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1737 | vput(nd.ni_dvp); | |||
| 1738 | vn_finished_write(mp); | |||
| 1739 | return (error); | |||
| 1740 | } | |||
| 1741 | ||||
| 1742 | /* | |||
| 1743 | * Delete a name from the filesystem. | |||
| 1744 | */ | |||
| 1745 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1746 | struct unlink_args { | |||
| 1747 | char *path; | |||
| 1748 | }; | |||
| 1749 | #endif | |||
| 1750 | int | |||
| 1751 | sys_unlink(struct thread *td, struct unlink_args *uap) | |||
| 1752 | { | |||
| 1753 | ||||
| 1754 | return (kern_unlinkat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, 0, 0)); | |||
| 1755 | } | |||
| 1756 | ||||
| 1757 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1758 | struct unlinkat_args { | |||
| 1759 | int fd; | |||
| 1760 | char *path; | |||
| 1761 | int flag; | |||
| 1762 | }; | |||
| 1763 | #endif | |||
| 1764 | int | |||
| 1765 | sys_unlinkat(struct thread *td, struct unlinkat_args *uap) | |||
| 1766 | { | |||
| 1767 | int fd, flag; | |||
| 1768 | const char *path; | |||
| 1769 | ||||
| 1770 | flag = uap->flag; | |||
| 1771 | fd = uap->fd; | |||
| 1772 | path = uap->path; | |||
| 1773 | ||||
| 1774 | if ((flag & ~(AT_REMOVEDIR0x0800 | AT_BENEATH0x1000)) != 0) | |||
| 1775 | return (EINVAL22); | |||
| 1776 | ||||
| 1777 | if ((uap->flag & AT_REMOVEDIR0x0800) != 0) | |||
| 1778 | return (kern_rmdirat(td, fd, path, UIO_USERSPACE, flag)); | |||
| 1779 | else | |||
| 1780 | return (kern_unlinkat(td, fd, path, UIO_USERSPACE, flag, 0)); | |||
| 1781 | } | |||
| 1782 | ||||
| 1783 | int | |||
| 1784 | kern_unlinkat(struct thread *td, int fd, const char *path, | |||
| 1785 | enum uio_seg pathseg, int flag, ino_t oldinum) | |||
| 1786 | { | |||
| 1787 | struct mount *mp; | |||
| 1788 | struct vnode *vp; | |||
| 1789 | struct nameidata nd; | |||
| 1790 | struct stat sb; | |||
| 1791 | int error; | |||
| 1792 | ||||
| 1793 | restart: | |||
| 1794 | bwillwrite(); | |||
| 1795 | NDINIT_ATRIGHTS(&nd, DELETE, LOCKPARENT | LOCKLEAF | AUDITVNODE1 |NDINIT_ALL(&nd, 2, 0x0008 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ((void *)0), & cap_unlinkat_rights, td) | |||
| 1796 | ((flag & AT_BENEATH) != 0 ? BENEATH : 0),NDINIT_ALL(&nd, 2, 0x0008 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ((void *)0), & cap_unlinkat_rights, td) | |||
| 1797 | pathseg, path, fd, &cap_unlinkat_rights, td)NDINIT_ALL(&nd, 2, 0x0008 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ((void *)0), & cap_unlinkat_rights, td); | |||
| 1798 | if ((error = namei(&nd)) != 0) | |||
| 1799 | return (error == EINVAL22 ? EPERM1 : error); | |||
| 1800 | vp = nd.ni_vp; | |||
| 1801 | if (vp->v_type == VDIR && oldinum == 0) { | |||
| 1802 | error = EPERM1; /* POSIX */ | |||
| 1803 | } else if (oldinum != 0 && | |||
| 1804 | ((error = vn_stat(vp, &sb, td->td_ucred, NOCRED((struct ucred *)0), td)) == 0) && | |||
| 1805 | sb.st_ino != oldinum) { | |||
| 1806 | error = EIDRM82; /* Identifier removed */ | |||
| 1807 | } else { | |||
| 1808 | /* | |||
| 1809 | * The root of a mounted filesystem cannot be deleted. | |||
| 1810 | * | |||
| 1811 | * XXX: can this only be a VDIR case? | |||
| 1812 | */ | |||
| 1813 | if (vp->v_vflag & VV_ROOT0x0001) | |||
| 1814 | error = EBUSY16; | |||
| 1815 | } | |||
| 1816 | if (error == 0) { | |||
| 1817 | if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT0x0002) != 0) { | |||
| 1818 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1819 | vput(nd.ni_dvp); | |||
| 1820 | if (vp == nd.ni_dvp) | |||
| 1821 | vrele(vp); | |||
| 1822 | else | |||
| 1823 | vput(vp); | |||
| 1824 | if ((error = vn_start_write(NULL((void *)0), &mp, | |||
| 1825 | V_XSLEEP0x0004 | PCATCH0x100)) != 0) | |||
| 1826 | return (error); | |||
| 1827 | goto restart; | |||
| 1828 | } | |||
| 1829 | #ifdef MAC1 | |||
| 1830 | error = mac_vnode_check_unlink(td->td_ucred, nd.ni_dvp, vp, | |||
| 1831 | &nd.ni_cnd); | |||
| 1832 | if (error != 0) | |||
| 1833 | goto out; | |||
| 1834 | #endif | |||
| 1835 | vfs_notify_upper(vp, VFS_NOTIFY_UPPER_UNLINK2); | |||
| 1836 | error = VOP_REMOVE(nd.ni_dvp, vp, &nd.ni_cnd); | |||
| 1837 | #ifdef MAC1 | |||
| 1838 | out: | |||
| 1839 | #endif | |||
| 1840 | vn_finished_write(mp); | |||
| 1841 | } | |||
| 1842 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 1843 | vput(nd.ni_dvp); | |||
| 1844 | if (vp == nd.ni_dvp) | |||
| 1845 | vrele(vp); | |||
| 1846 | else | |||
| 1847 | vput(vp); | |||
| 1848 | return (error); | |||
| 1849 | } | |||
| 1850 | ||||
| 1851 | /* | |||
| 1852 | * Reposition read/write file offset. | |||
| 1853 | */ | |||
| 1854 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1855 | struct lseek_args { | |||
| 1856 | int fd; | |||
| 1857 | int pad; | |||
| 1858 | off_t offset; | |||
| 1859 | int whence; | |||
| 1860 | }; | |||
| 1861 | #endif | |||
| 1862 | int | |||
| 1863 | sys_lseek(struct thread *td, struct lseek_args *uap) | |||
| 1864 | { | |||
| 1865 | ||||
| 1866 | return (kern_lseek(td, uap->fd, uap->offset, uap->whence)); | |||
| 1867 | } | |||
| 1868 | ||||
| 1869 | int | |||
| 1870 | kern_lseek(struct thread *td, int fd, off_t offset, int whence) | |||
| 1871 | { | |||
| 1872 | struct file *fp; | |||
| 1873 | int error; | |||
| 1874 | ||||
| 1875 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 1876 | error = fget(td, fd, &cap_seek_rights, &fp); | |||
| 1877 | if (error != 0) | |||
| 1878 | return (error); | |||
| 1879 | error = (fp->f_ops->fo_flags & DFLAG_SEEKABLE0x02) != 0 ? | |||
| 1880 | fo_seek(fp, offset, whence, td) : ESPIPE29; | |||
| 1881 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 1882 | return (error); | |||
| 1883 | } | |||
| 1884 | ||||
| 1885 | #if defined(COMPAT_43) | |||
| 1886 | /* | |||
| 1887 | * Reposition read/write file offset. | |||
| 1888 | */ | |||
| 1889 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1890 | struct olseek_args { | |||
| 1891 | int fd; | |||
| 1892 | long offset; | |||
| 1893 | int whence; | |||
| 1894 | }; | |||
| 1895 | #endif | |||
| 1896 | int | |||
| 1897 | olseek(struct thread *td, struct olseek_args *uap) | |||
| 1898 | { | |||
| 1899 | ||||
| 1900 | return (kern_lseek(td, uap->fd, uap->offset, uap->whence)); | |||
| 1901 | } | |||
| 1902 | #endif /* COMPAT_43 */ | |||
| 1903 | ||||
| 1904 | #if defined(COMPAT_FREEBSD61) | |||
| 1905 | /* Version with the 'pad' argument */ | |||
| 1906 | int | |||
| 1907 | freebsd6_lseek(struct thread *td, struct freebsd6_lseek_args *uap) | |||
| 1908 | { | |||
| 1909 | ||||
| 1910 | return (kern_lseek(td, uap->fd, uap->offset, uap->whence)); | |||
| 1911 | } | |||
| 1912 | #endif | |||
| 1913 | ||||
| 1914 | /* | |||
| 1915 | * Check access permissions using passed credentials. | |||
| 1916 | */ | |||
| 1917 | static int | |||
| 1918 | vn_access(struct vnode *vp, int user_flags, struct ucred *cred, | |||
| 1919 | struct thread *td) | |||
| 1920 | { | |||
| 1921 | accmode_t accmode; | |||
| 1922 | int error; | |||
| 1923 | ||||
| 1924 | /* Flags == 0 means only check for existence. */ | |||
| 1925 | if (user_flags == 0) | |||
| 1926 | return (0); | |||
| 1927 | ||||
| 1928 | accmode = 0; | |||
| 1929 | if (user_flags & R_OK0x04) | |||
| 1930 | accmode |= VREAD000000000400; | |||
| 1931 | if (user_flags & W_OK0x02) | |||
| 1932 | accmode |= VWRITE000000000200; | |||
| 1933 | if (user_flags & X_OK0x01) | |||
| 1934 | accmode |= VEXEC000000000100; | |||
| 1935 | #ifdef MAC1 | |||
| 1936 | error = mac_vnode_check_access(cred, vp, accmode); | |||
| 1937 | if (error != 0) | |||
| 1938 | return (error); | |||
| 1939 | #endif | |||
| 1940 | if ((accmode & VWRITE000000000200) == 0 || (error = vn_writechk(vp)) == 0) | |||
| 1941 | error = VOP_ACCESS(vp, accmode, cred, td); | |||
| 1942 | return (error); | |||
| 1943 | } | |||
| 1944 | ||||
| 1945 | /* | |||
| 1946 | * Check access permissions using "real" credentials. | |||
| 1947 | */ | |||
| 1948 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1949 | struct access_args { | |||
| 1950 | char *path; | |||
| 1951 | int amode; | |||
| 1952 | }; | |||
| 1953 | #endif | |||
| 1954 | int | |||
| 1955 | sys_access(struct thread *td, struct access_args *uap) | |||
| 1956 | { | |||
| 1957 | ||||
| 1958 | return (kern_accessat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 1959 | 0, uap->amode)); | |||
| 1960 | } | |||
| 1961 | ||||
| 1962 | #ifndef _SYS_SYSPROTO_H_ | |||
| 1963 | struct faccessat_args { | |||
| 1964 | int dirfd; | |||
| 1965 | char *path; | |||
| 1966 | int amode; | |||
| 1967 | int flag; | |||
| 1968 | } | |||
| 1969 | #endif | |||
| 1970 | int | |||
| 1971 | sys_faccessat(struct thread *td, struct faccessat_args *uap) | |||
| 1972 | { | |||
| 1973 | ||||
| 1974 | return (kern_accessat(td, uap->fd, uap->path, UIO_USERSPACE, uap->flag, | |||
| 1975 | uap->amode)); | |||
| 1976 | } | |||
| 1977 | ||||
| 1978 | int | |||
| 1979 | kern_accessat(struct thread *td, int fd, const char *path, | |||
| 1980 | enum uio_seg pathseg, int flag, int amode) | |||
| 1981 | { | |||
| 1982 | struct ucred *cred, *usecred; | |||
| 1983 | struct vnode *vp; | |||
| 1984 | struct nameidata nd; | |||
| 1985 | int error; | |||
| 1986 | ||||
| 1987 | if ((flag & ~(AT_EACCESS0x0100 | AT_BENEATH0x1000)) != 0) | |||
| 1988 | return (EINVAL22); | |||
| 1989 | if (amode != F_OK0 && (amode & ~(R_OK0x04 | W_OK0x02 | X_OK0x01)) != 0) | |||
| 1990 | return (EINVAL22); | |||
| 1991 | ||||
| 1992 | /* | |||
| 1993 | * Create and modify a temporary credential instead of one that | |||
| 1994 | * is potentially shared (if we need one). | |||
| 1995 | */ | |||
| 1996 | cred = td->td_ucred; | |||
| 1997 | if ((flag & AT_EACCESS0x0100) == 0 && | |||
| 1998 | ((cred->cr_uid != cred->cr_ruid || | |||
| 1999 | cred->cr_rgid != cred->cr_groups[0]))) { | |||
| 2000 | usecred = crdup(cred); | |||
| 2001 | usecred->cr_uid = cred->cr_ruid; | |||
| 2002 | usecred->cr_groups[0] = cred->cr_rgid; | |||
| 2003 | td->td_ucred = usecred; | |||
| 2004 | } else | |||
| 2005 | usecred = cred; | |||
| 2006 | AUDIT_ARG_VALUE(amode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_value((amode)); } while (0); | |||
| 2007 | NDINIT_ATRIGHTS(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF |NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ( (void *)0), &cap_fstat_rights, td) | |||
| 2008 | AUDITVNODE1 | ((flag & AT_BENEATH) != 0 ? BENEATH : 0),NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ( (void *)0), &cap_fstat_rights, td) | |||
| 2009 | pathseg, path, fd, &cap_fstat_rights, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x0100 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ( (void *)0), &cap_fstat_rights, td); | |||
| 2010 | if ((error = namei(&nd)) != 0) | |||
| 2011 | goto out; | |||
| 2012 | vp = nd.ni_vp; | |||
| 2013 | ||||
| 2014 | error = vn_access(vp, amode, usecred, td); | |||
| 2015 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 2016 | vput(vp); | |||
| 2017 | out: | |||
| 2018 | if (usecred != cred) { | |||
| 2019 | td->td_ucred = cred; | |||
| 2020 | crfree(usecred); | |||
| 2021 | } | |||
| 2022 | return (error); | |||
| 2023 | } | |||
| 2024 | ||||
| 2025 | /* | |||
| 2026 | * Check access permissions using "effective" credentials. | |||
| 2027 | */ | |||
| 2028 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2029 | struct eaccess_args { | |||
| 2030 | char *path; | |||
| 2031 | int amode; | |||
| 2032 | }; | |||
| 2033 | #endif | |||
| 2034 | int | |||
| 2035 | sys_eaccess(struct thread *td, struct eaccess_args *uap) | |||
| 2036 | { | |||
| 2037 | ||||
| 2038 | return (kern_accessat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2039 | AT_EACCESS0x0100, uap->amode)); | |||
| 2040 | } | |||
| 2041 | ||||
| 2042 | #if defined(COMPAT_43) | |||
| 2043 | /* | |||
| 2044 | * Get file status; this version follows links. | |||
| 2045 | */ | |||
| 2046 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2047 | struct ostat_args { | |||
| 2048 | char *path; | |||
| 2049 | struct ostat *ub; | |||
| 2050 | }; | |||
| 2051 | #endif | |||
| 2052 | int | |||
| 2053 | ostat(struct thread *td, struct ostat_args *uap) | |||
| 2054 | { | |||
| 2055 | struct stat sb; | |||
| 2056 | struct ostat osb; | |||
| 2057 | int error; | |||
| 2058 | ||||
| 2059 | error = kern_statat(td, 0, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2060 | &sb, NULL((void *)0)); | |||
| 2061 | if (error != 0) | |||
| 2062 | return (error); | |||
| 2063 | cvtstat(&sb, &osb); | |||
| 2064 | return (copyout(&osb, uap->ub, sizeof (osb))); | |||
| 2065 | } | |||
| 2066 | ||||
| 2067 | /* | |||
| 2068 | * Get file status; this version does not follow links. | |||
| 2069 | */ | |||
| 2070 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2071 | struct olstat_args { | |||
| 2072 | char *path; | |||
| 2073 | struct ostat *ub; | |||
| 2074 | }; | |||
| 2075 | #endif | |||
| 2076 | int | |||
| 2077 | olstat(struct thread *td, struct olstat_args *uap) | |||
| 2078 | { | |||
| 2079 | struct stat sb; | |||
| 2080 | struct ostat osb; | |||
| 2081 | int error; | |||
| 2082 | ||||
| 2083 | error = kern_statat(td, AT_SYMLINK_NOFOLLOW0x0200, AT_FDCWD-100, uap->path, | |||
| 2084 | UIO_USERSPACE, &sb, NULL((void *)0)); | |||
| 2085 | if (error != 0) | |||
| 2086 | return (error); | |||
| 2087 | cvtstat(&sb, &osb); | |||
| 2088 | return (copyout(&osb, uap->ub, sizeof (osb))); | |||
| 2089 | } | |||
| 2090 | ||||
| 2091 | /* | |||
| 2092 | * Convert from an old to a new stat structure. | |||
| 2093 | * XXX: many values are blindly truncated. | |||
| 2094 | */ | |||
| 2095 | void | |||
| 2096 | cvtstat(struct stat *st, struct ostat *ost) | |||
| 2097 | { | |||
| 2098 | ||||
| 2099 | bzero(ost, sizeof(*ost))__builtin_memset((ost), 0, (sizeof(*ost))); | |||
| 2100 | ost->st_dev = st->st_dev; | |||
| 2101 | ost->st_ino = st->st_ino; | |||
| 2102 | ost->st_mode = st->st_mode; | |||
| 2103 | ost->st_nlink = st->st_nlink; | |||
| 2104 | ost->st_uid = st->st_uid; | |||
| 2105 | ost->st_gid = st->st_gid; | |||
| 2106 | ost->st_rdev = st->st_rdev; | |||
| 2107 | ost->st_size = MIN(st->st_size, INT32_MAX)(((st->st_size)<(0x7fffffff))?(st->st_size):(0x7fffffff )); | |||
| 2108 | ost->st_atim = st->st_atim; | |||
| 2109 | ost->st_mtim = st->st_mtim; | |||
| 2110 | ost->st_ctim = st->st_ctim; | |||
| 2111 | ost->st_blksize = st->st_blksize; | |||
| 2112 | ost->st_blocks = st->st_blocks; | |||
| 2113 | ost->st_flags = st->st_flags; | |||
| 2114 | ost->st_gen = st->st_gen; | |||
| 2115 | } | |||
| 2116 | #endif /* COMPAT_43 */ | |||
| 2117 | ||||
| 2118 | #if defined(COMPAT_43) || defined(COMPAT_FREEBSD111) | |||
| 2119 | int ino64_trunc_error; | |||
| 2120 | SYSCTL_INT(_vfs, OID_AUTO, ino64_trunc_error, CTLFLAG_RW,static struct sysctl_oid sysctl___vfs_ino64_trunc_error = { . oid_parent = ((&(&sysctl___vfs)->oid_children)), . oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &ino64_trunc_error), .oid_arg2 = (0), .oid_name = ("ino64_trunc_error" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Error on truncation of device, file or inode number, or link count" , .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___vfs_ino64_trunc_error __attribute__ ((__section__("set_" "sysctl_set"))) __attribute__((__used__) ) = &(sysctl___vfs_ino64_trunc_error); _Static_assert(((( (0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000 )) & 0) == 2) && sizeof(int) == sizeof(*(&ino64_trunc_error )), "compile-time assertion failed") | |||
| 2121 | &ino64_trunc_error, 0,static struct sysctl_oid sysctl___vfs_ino64_trunc_error = { . oid_parent = ((&(&sysctl___vfs)->oid_children)), . oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &ino64_trunc_error), .oid_arg2 = (0), .oid_name = ("ino64_trunc_error" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Error on truncation of device, file or inode number, or link count" , .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___vfs_ino64_trunc_error __attribute__ ((__section__("set_" "sysctl_set"))) __attribute__((__used__) ) = &(sysctl___vfs_ino64_trunc_error); _Static_assert(((( (0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000 )) & 0) == 2) && sizeof(int) == sizeof(*(&ino64_trunc_error )), "compile-time assertion failed") | |||
| 2122 | "Error on truncation of device, file or inode number, or link count")static struct sysctl_oid sysctl___vfs_ino64_trunc_error = { . oid_parent = ((&(&sysctl___vfs)->oid_children)), . oid_children = { ((void *)0) }, .oid_number = ((-1)), .oid_kind = (2 | 0x00040000 | ((0x80000000|0x40000000))), .oid_arg1 = ( &ino64_trunc_error), .oid_arg2 = (0), .oid_name = ("ino64_trunc_error" ), .oid_handler = (sysctl_handle_int), .oid_fmt = ("I"), .oid_descr = "Error on truncation of device, file or inode number, or link count" , .oid_label = (((void *)0)), }; __asm__(".globl " "__start_set_sysctl_set" ); __asm__(".globl " "__stop_set_sysctl_set"); static void const * const __set_sysctl_set_sym_sysctl___vfs_ino64_trunc_error __attribute__ ((__section__("set_" "sysctl_set"))) __attribute__((__used__) ) = &(sysctl___vfs_ino64_trunc_error); _Static_assert(((( (0x80000000|0x40000000)) & 0xf) == 0 || (((0x80000000|0x40000000 )) & 0) == 2) && sizeof(int) == sizeof(*(&ino64_trunc_error )), "compile-time assertion failed"); | |||
| 2123 | ||||
| 2124 | int | |||
| 2125 | freebsd11_cvtstat(struct stat *st, struct freebsd11_stat *ost) | |||
| 2126 | { | |||
| 2127 | ||||
| 2128 | ost->st_dev = st->st_dev; | |||
| 2129 | if (ost->st_dev != st->st_dev) { | |||
| 2130 | switch (ino64_trunc_error) { | |||
| 2131 | default: | |||
| 2132 | /* | |||
| 2133 | * Since dev_t is almost raw, don't clamp to the | |||
| 2134 | * maximum for case 2, but ignore the error. | |||
| 2135 | */ | |||
| 2136 | break; | |||
| 2137 | case 1: | |||
| 2138 | return (EOVERFLOW84); | |||
| 2139 | } | |||
| 2140 | } | |||
| 2141 | ost->st_ino = st->st_ino; | |||
| 2142 | if (ost->st_ino != st->st_ino) { | |||
| 2143 | switch (ino64_trunc_error) { | |||
| 2144 | default: | |||
| 2145 | case 0: | |||
| 2146 | break; | |||
| 2147 | case 1: | |||
| 2148 | return (EOVERFLOW84); | |||
| 2149 | case 2: | |||
| 2150 | ost->st_ino = UINT32_MAX0xffffffffU; | |||
| 2151 | break; | |||
| 2152 | } | |||
| 2153 | } | |||
| 2154 | ost->st_mode = st->st_mode; | |||
| 2155 | ost->st_nlink = st->st_nlink; | |||
| 2156 | if (ost->st_nlink != st->st_nlink) { | |||
| 2157 | switch (ino64_trunc_error) { | |||
| 2158 | default: | |||
| 2159 | case 0: | |||
| 2160 | break; | |||
| 2161 | case 1: | |||
| 2162 | return (EOVERFLOW84); | |||
| 2163 | case 2: | |||
| 2164 | ost->st_nlink = UINT16_MAX0xffff; | |||
| 2165 | break; | |||
| 2166 | } | |||
| 2167 | } | |||
| 2168 | ost->st_uid = st->st_uid; | |||
| 2169 | ost->st_gid = st->st_gid; | |||
| 2170 | ost->st_rdev = st->st_rdev; | |||
| 2171 | if (ost->st_rdev != st->st_rdev) { | |||
| 2172 | switch (ino64_trunc_error) { | |||
| 2173 | default: | |||
| 2174 | break; | |||
| 2175 | case 1: | |||
| 2176 | return (EOVERFLOW84); | |||
| 2177 | } | |||
| 2178 | } | |||
| 2179 | ost->st_atim = st->st_atim; | |||
| 2180 | ost->st_mtim = st->st_mtim; | |||
| 2181 | ost->st_ctim = st->st_ctim; | |||
| 2182 | ost->st_size = st->st_size; | |||
| 2183 | ost->st_blocks = st->st_blocks; | |||
| 2184 | ost->st_blksize = st->st_blksize; | |||
| 2185 | ost->st_flags = st->st_flags; | |||
| 2186 | ost->st_gen = st->st_gen; | |||
| 2187 | ost->st_lspare = 0; | |||
| 2188 | ost->st_birthtim = st->st_birthtim; | |||
| 2189 | bzero((char *)&ost->st_birthtim + sizeof(ost->st_birthtim),__builtin_memset(((char *)&ost->st_birthtim + sizeof(ost ->st_birthtim)), 0, (sizeof(*ost) - __builtin_offsetof(struct freebsd11_stat, st_birthtim) - sizeof(ost->st_birthtim))) | |||
| 2190 | sizeof(*ost) - offsetof(struct freebsd11_stat,__builtin_memset(((char *)&ost->st_birthtim + sizeof(ost ->st_birthtim)), 0, (sizeof(*ost) - __builtin_offsetof(struct freebsd11_stat, st_birthtim) - sizeof(ost->st_birthtim))) | |||
| 2191 | st_birthtim) - sizeof(ost->st_birthtim))__builtin_memset(((char *)&ost->st_birthtim + sizeof(ost ->st_birthtim)), 0, (sizeof(*ost) - __builtin_offsetof(struct freebsd11_stat, st_birthtim) - sizeof(ost->st_birthtim))); | |||
| 2192 | return (0); | |||
| 2193 | } | |||
| 2194 | ||||
| 2195 | int | |||
| 2196 | freebsd11_stat(struct thread *td, struct freebsd11_stat_args* uap) | |||
| 2197 | { | |||
| 2198 | struct stat sb; | |||
| 2199 | struct freebsd11_stat osb; | |||
| 2200 | int error; | |||
| 2201 | ||||
| 2202 | error = kern_statat(td, 0, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2203 | &sb, NULL((void *)0)); | |||
| 2204 | if (error != 0) | |||
| 2205 | return (error); | |||
| 2206 | error = freebsd11_cvtstat(&sb, &osb); | |||
| 2207 | if (error == 0) | |||
| 2208 | error = copyout(&osb, uap->ub, sizeof(osb)); | |||
| 2209 | return (error); | |||
| 2210 | } | |||
| 2211 | ||||
| 2212 | int | |||
| 2213 | freebsd11_lstat(struct thread *td, struct freebsd11_lstat_args* uap) | |||
| 2214 | { | |||
| 2215 | struct stat sb; | |||
| 2216 | struct freebsd11_stat osb; | |||
| 2217 | int error; | |||
| 2218 | ||||
| 2219 | error = kern_statat(td, AT_SYMLINK_NOFOLLOW0x0200, AT_FDCWD-100, uap->path, | |||
| 2220 | UIO_USERSPACE, &sb, NULL((void *)0)); | |||
| 2221 | if (error != 0) | |||
| 2222 | return (error); | |||
| 2223 | error = freebsd11_cvtstat(&sb, &osb); | |||
| 2224 | if (error == 0) | |||
| 2225 | error = copyout(&osb, uap->ub, sizeof(osb)); | |||
| 2226 | return (error); | |||
| 2227 | } | |||
| 2228 | ||||
| 2229 | int | |||
| 2230 | freebsd11_fhstat(struct thread *td, struct freebsd11_fhstat_args* uap) | |||
| 2231 | { | |||
| 2232 | struct fhandle fh; | |||
| 2233 | struct stat sb; | |||
| 2234 | struct freebsd11_stat osb; | |||
| 2235 | int error; | |||
| 2236 | ||||
| 2237 | error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t)); | |||
| 2238 | if (error != 0) | |||
| 2239 | return (error); | |||
| 2240 | error = kern_fhstat(td, fh, &sb); | |||
| 2241 | if (error != 0) | |||
| 2242 | return (error); | |||
| 2243 | error = freebsd11_cvtstat(&sb, &osb); | |||
| 2244 | if (error == 0) | |||
| 2245 | error = copyout(&osb, uap->sb, sizeof(osb)); | |||
| 2246 | return (error); | |||
| 2247 | } | |||
| 2248 | ||||
| 2249 | int | |||
| 2250 | freebsd11_fstatat(struct thread *td, struct freebsd11_fstatat_args* uap) | |||
| 2251 | { | |||
| 2252 | struct stat sb; | |||
| 2253 | struct freebsd11_stat osb; | |||
| 2254 | int error; | |||
| 2255 | ||||
| 2256 | error = kern_statat(td, uap->flag, uap->fd, uap->path, | |||
| 2257 | UIO_USERSPACE, &sb, NULL((void *)0)); | |||
| 2258 | if (error != 0) | |||
| 2259 | return (error); | |||
| 2260 | error = freebsd11_cvtstat(&sb, &osb); | |||
| 2261 | if (error == 0) | |||
| 2262 | error = copyout(&osb, uap->buf, sizeof(osb)); | |||
| 2263 | return (error); | |||
| 2264 | } | |||
| 2265 | #endif /* COMPAT_FREEBSD11 */ | |||
| 2266 | ||||
| 2267 | /* | |||
| 2268 | * Get file status | |||
| 2269 | */ | |||
| 2270 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2271 | struct fstatat_args { | |||
| 2272 | int fd; | |||
| 2273 | char *path; | |||
| 2274 | struct stat *buf; | |||
| 2275 | int flag; | |||
| 2276 | } | |||
| 2277 | #endif | |||
| 2278 | int | |||
| 2279 | sys_fstatat(struct thread *td, struct fstatat_args *uap) | |||
| 2280 | { | |||
| 2281 | struct stat sb; | |||
| 2282 | int error; | |||
| 2283 | ||||
| 2284 | error = kern_statat(td, uap->flag, uap->fd, uap->path, | |||
| 2285 | UIO_USERSPACE, &sb, NULL((void *)0)); | |||
| 2286 | if (error == 0) | |||
| 2287 | error = copyout(&sb, uap->buf, sizeof (sb)); | |||
| 2288 | return (error); | |||
| 2289 | } | |||
| 2290 | ||||
| 2291 | int | |||
| 2292 | kern_statat(struct thread *td, int flag, int fd, const char *path, | |||
| 2293 | enum uio_seg pathseg, struct stat *sbp, | |||
| 2294 | void (*hook)(struct vnode *vp, struct stat *sbp)) | |||
| 2295 | { | |||
| 2296 | struct nameidata nd; | |||
| 2297 | int error; | |||
| 2298 | ||||
| 2299 | if ((flag & ~(AT_SYMLINK_NOFOLLOW0x0200 | AT_BENEATH0x1000)) != 0) | |||
| 2300 | return (EINVAL22); | |||
| 2301 | ||||
| 2302 | NDINIT_ATRIGHTS(&nd, LOOKUP, ((flag & AT_SYMLINK_NOFOLLOW) != 0 ?NDINIT_ALL(&nd, 0, ((flag & 0x0200) != 0 ? 0x0000 : 0x0040 ) | ((flag & 0x1000) != 0 ? 0x0080 : 0) | 0x0100 | 0x0004 | 0x04000000, pathseg, path, fd, ((void *)0), &cap_fstat_rights , td) | |||
| 2303 | NOFOLLOW : FOLLOW) | ((flag & AT_BENEATH) != 0 ? BENEATH : 0) |NDINIT_ALL(&nd, 0, ((flag & 0x0200) != 0 ? 0x0000 : 0x0040 ) | ((flag & 0x1000) != 0 ? 0x0080 : 0) | 0x0100 | 0x0004 | 0x04000000, pathseg, path, fd, ((void *)0), &cap_fstat_rights , td) | |||
| 2304 | LOCKSHARED | LOCKLEAF | AUDITVNODE1, pathseg, path, fd,NDINIT_ALL(&nd, 0, ((flag & 0x0200) != 0 ? 0x0000 : 0x0040 ) | ((flag & 0x1000) != 0 ? 0x0080 : 0) | 0x0100 | 0x0004 | 0x04000000, pathseg, path, fd, ((void *)0), &cap_fstat_rights , td) | |||
| 2305 | &cap_fstat_rights, td)NDINIT_ALL(&nd, 0, ((flag & 0x0200) != 0 ? 0x0000 : 0x0040 ) | ((flag & 0x1000) != 0 ? 0x0080 : 0) | 0x0100 | 0x0004 | 0x04000000, pathseg, path, fd, ((void *)0), &cap_fstat_rights , td); | |||
| 2306 | ||||
| 2307 | if ((error = namei(&nd)) != 0) | |||
| 2308 | return (error); | |||
| 2309 | error = vn_stat(nd.ni_vp, sbp, td->td_ucred, NOCRED((struct ucred *)0), td); | |||
| 2310 | if (error == 0) { | |||
| 2311 | SDT_PROBE2(vfs, , stat, mode, path, sbp->st_mode)do { if (__builtin_expect((sdt_probes_enabled), 0)) { if (__builtin_expect ((sdt_vfs__stat_mode->id), 0)) (*sdt_probe_func)(sdt_vfs__stat_mode ->id, (uintptr_t) path, (uintptr_t) sbp->st_mode, (uintptr_t ) 0, (uintptr_t) 0, (uintptr_t) 0); } } while (0); | |||
| 2312 | if (S_ISREG(sbp->st_mode)(((sbp->st_mode) & 0170000) == 0100000)) | |||
| 2313 | SDT_PROBE2(vfs, , stat, reg, path, pathseg)do { if (__builtin_expect((sdt_probes_enabled), 0)) { if (__builtin_expect ((sdt_vfs__stat_reg->id), 0)) (*sdt_probe_func)(sdt_vfs__stat_reg ->id, (uintptr_t) path, (uintptr_t) pathseg, (uintptr_t) 0 , (uintptr_t) 0, (uintptr_t) 0); } } while (0); | |||
| 2314 | if (__predict_false(hook != NULL)__builtin_expect((hook != ((void *)0)), 0)) | |||
| 2315 | hook(nd.ni_vp, sbp); | |||
| 2316 | } | |||
| 2317 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 2318 | vput(nd.ni_vp); | |||
| 2319 | if (error != 0) | |||
| 2320 | return (error); | |||
| 2321 | #ifdef __STAT_TIME_T_EXT | |||
| 2322 | sbp->st_atim_ext = 0; | |||
| 2323 | sbp->st_mtim_ext = 0; | |||
| 2324 | sbp->st_ctim_ext = 0; | |||
| 2325 | sbp->st_btim_ext = 0; | |||
| 2326 | #endif | |||
| 2327 | #ifdef KTRACE1 | |||
| 2328 | if (KTRPOINT(td, KTR_STRUCT)(__builtin_expect(((((td))->td_proc->p_traceflag & ( 1 << (8)))), 0))) | |||
| 2329 | ktrstat(sbp)ktrstruct("stat", (sbp), sizeof(struct stat)); | |||
| 2330 | #endif | |||
| 2331 | return (0); | |||
| 2332 | } | |||
| 2333 | ||||
| 2334 | #if defined(COMPAT_FREEBSD111) | |||
| 2335 | /* | |||
| 2336 | * Implementation of the NetBSD [l]stat() functions. | |||
| 2337 | */ | |||
| 2338 | void | |||
| 2339 | freebsd11_cvtnstat(struct stat *sb, struct nstat *nsb) | |||
| 2340 | { | |||
| 2341 | ||||
| 2342 | bzero(nsb, sizeof(*nsb))__builtin_memset((nsb), 0, (sizeof(*nsb))); | |||
| 2343 | nsb->st_dev = sb->st_dev; | |||
| 2344 | nsb->st_ino = sb->st_ino; | |||
| 2345 | nsb->st_mode = sb->st_mode; | |||
| 2346 | nsb->st_nlink = sb->st_nlink; | |||
| 2347 | nsb->st_uid = sb->st_uid; | |||
| 2348 | nsb->st_gid = sb->st_gid; | |||
| 2349 | nsb->st_rdev = sb->st_rdev; | |||
| 2350 | nsb->st_atim = sb->st_atim; | |||
| 2351 | nsb->st_mtim = sb->st_mtim; | |||
| 2352 | nsb->st_ctim = sb->st_ctim; | |||
| 2353 | nsb->st_size = sb->st_size; | |||
| 2354 | nsb->st_blocks = sb->st_blocks; | |||
| 2355 | nsb->st_blksize = sb->st_blksize; | |||
| 2356 | nsb->st_flags = sb->st_flags; | |||
| 2357 | nsb->st_gen = sb->st_gen; | |||
| 2358 | nsb->st_birthtim = sb->st_birthtim; | |||
| 2359 | } | |||
| 2360 | ||||
| 2361 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2362 | struct freebsd11_nstat_args { | |||
| 2363 | char *path; | |||
| 2364 | struct nstat *ub; | |||
| 2365 | }; | |||
| 2366 | #endif | |||
| 2367 | int | |||
| 2368 | freebsd11_nstat(struct thread *td, struct freebsd11_nstat_args *uap) | |||
| 2369 | { | |||
| 2370 | struct stat sb; | |||
| 2371 | struct nstat nsb; | |||
| 2372 | int error; | |||
| 2373 | ||||
| 2374 | error = kern_statat(td, 0, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2375 | &sb, NULL((void *)0)); | |||
| 2376 | if (error != 0) | |||
| 2377 | return (error); | |||
| 2378 | freebsd11_cvtnstat(&sb, &nsb); | |||
| 2379 | return (copyout(&nsb, uap->ub, sizeof (nsb))); | |||
| 2380 | } | |||
| 2381 | ||||
| 2382 | /* | |||
| 2383 | * NetBSD lstat. Get file status; this version does not follow links. | |||
| 2384 | */ | |||
| 2385 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2386 | struct freebsd11_nlstat_args { | |||
| 2387 | char *path; | |||
| 2388 | struct nstat *ub; | |||
| 2389 | }; | |||
| 2390 | #endif | |||
| 2391 | int | |||
| 2392 | freebsd11_nlstat(struct thread *td, struct freebsd11_nlstat_args *uap) | |||
| 2393 | { | |||
| 2394 | struct stat sb; | |||
| 2395 | struct nstat nsb; | |||
| 2396 | int error; | |||
| 2397 | ||||
| 2398 | error = kern_statat(td, AT_SYMLINK_NOFOLLOW0x0200, AT_FDCWD-100, uap->path, | |||
| 2399 | UIO_USERSPACE, &sb, NULL((void *)0)); | |||
| 2400 | if (error != 0) | |||
| 2401 | return (error); | |||
| 2402 | freebsd11_cvtnstat(&sb, &nsb); | |||
| 2403 | return (copyout(&nsb, uap->ub, sizeof (nsb))); | |||
| 2404 | } | |||
| 2405 | #endif /* COMPAT_FREEBSD11 */ | |||
| 2406 | ||||
| 2407 | /* | |||
| 2408 | * Get configurable pathname variables. | |||
| 2409 | */ | |||
| 2410 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2411 | struct pathconf_args { | |||
| 2412 | char *path; | |||
| 2413 | int name; | |||
| 2414 | }; | |||
| 2415 | #endif | |||
| 2416 | int | |||
| 2417 | sys_pathconf(struct thread *td, struct pathconf_args *uap) | |||
| 2418 | { | |||
| 2419 | long value; | |||
| 2420 | int error; | |||
| 2421 | ||||
| 2422 | error = kern_pathconf(td, uap->path, UIO_USERSPACE, uap->name, FOLLOW0x0040, | |||
| 2423 | &value); | |||
| 2424 | if (error == 0) | |||
| 2425 | td->td_retvaltd_uretoff.tdu_retval[0] = value; | |||
| 2426 | return (error); | |||
| 2427 | } | |||
| 2428 | ||||
| 2429 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2430 | struct lpathconf_args { | |||
| 2431 | char *path; | |||
| 2432 | int name; | |||
| 2433 | }; | |||
| 2434 | #endif | |||
| 2435 | int | |||
| 2436 | sys_lpathconf(struct thread *td, struct lpathconf_args *uap) | |||
| 2437 | { | |||
| 2438 | long value; | |||
| 2439 | int error; | |||
| 2440 | ||||
| 2441 | error = kern_pathconf(td, uap->path, UIO_USERSPACE, uap->name, | |||
| 2442 | NOFOLLOW0x0000, &value); | |||
| 2443 | if (error == 0) | |||
| 2444 | td->td_retvaltd_uretoff.tdu_retval[0] = value; | |||
| 2445 | return (error); | |||
| 2446 | } | |||
| 2447 | ||||
| 2448 | int | |||
| 2449 | kern_pathconf(struct thread *td, const char *path, enum uio_seg pathseg, | |||
| 2450 | int name, u_long flags, long *valuep) | |||
| 2451 | { | |||
| 2452 | struct nameidata nd; | |||
| 2453 | int error; | |||
| 2454 | ||||
| 2455 | NDINIT(&nd, LOOKUP, LOCKSHARED | LOCKLEAF | AUDITVNODE1 | flags,NDINIT_ALL(&nd, 0, 0x0100 | 0x0004 | 0x04000000 | flags, pathseg , path, -100, ((void *)0), 0, td) | |||
| 2456 | pathseg, path, td)NDINIT_ALL(&nd, 0, 0x0100 | 0x0004 | 0x04000000 | flags, pathseg , path, -100, ((void *)0), 0, td); | |||
| 2457 | if ((error = namei(&nd)) != 0) | |||
| 2458 | return (error); | |||
| 2459 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 2460 | ||||
| 2461 | error = VOP_PATHCONF(nd.ni_vp, name, valuep); | |||
| 2462 | vput(nd.ni_vp); | |||
| 2463 | return (error); | |||
| 2464 | } | |||
| 2465 | ||||
| 2466 | /* | |||
| 2467 | * Return target name of a symbolic link. | |||
| 2468 | */ | |||
| 2469 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2470 | struct readlink_args { | |||
| 2471 | char *path; | |||
| 2472 | char *buf; | |||
| 2473 | size_t count; | |||
| 2474 | }; | |||
| 2475 | #endif | |||
| 2476 | int | |||
| 2477 | sys_readlink(struct thread *td, struct readlink_args *uap) | |||
| 2478 | { | |||
| 2479 | ||||
| 2480 | return (kern_readlinkat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2481 | uap->buf, UIO_USERSPACE, uap->count)); | |||
| 2482 | } | |||
| 2483 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2484 | struct readlinkat_args { | |||
| 2485 | int fd; | |||
| 2486 | char *path; | |||
| 2487 | char *buf; | |||
| 2488 | size_t bufsize; | |||
| 2489 | }; | |||
| 2490 | #endif | |||
| 2491 | int | |||
| 2492 | sys_readlinkat(struct thread *td, struct readlinkat_args *uap) | |||
| 2493 | { | |||
| 2494 | ||||
| 2495 | return (kern_readlinkat(td, uap->fd, uap->path, UIO_USERSPACE, | |||
| 2496 | uap->buf, UIO_USERSPACE, uap->bufsize)); | |||
| 2497 | } | |||
| 2498 | ||||
| 2499 | int | |||
| 2500 | kern_readlinkat(struct thread *td, int fd, const char *path, | |||
| 2501 | enum uio_seg pathseg, char *buf, enum uio_seg bufseg, size_t count) | |||
| 2502 | { | |||
| 2503 | struct vnode *vp; | |||
| 2504 | struct nameidata nd; | |||
| 2505 | int error; | |||
| 2506 | ||||
| 2507 | if (count > IOSIZE_MAXiosize_max()) | |||
| 2508 | return (EINVAL22); | |||
| 2509 | ||||
| 2510 | NDINIT_AT(&nd, LOOKUP, NOFOLLOW | LOCKSHARED | LOCKLEAF | AUDITVNODE1,NDINIT_ALL(&nd, 0, 0x0000 | 0x0100 | 0x0004 | 0x04000000, pathseg, path, fd, ((void *)0), 0, td) | |||
| 2511 | pathseg, path, fd, td)NDINIT_ALL(&nd, 0, 0x0000 | 0x0100 | 0x0004 | 0x04000000, pathseg, path, fd, ((void *)0), 0, td); | |||
| 2512 | ||||
| 2513 | if ((error = namei(&nd)) != 0) | |||
| 2514 | return (error); | |||
| 2515 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 2516 | vp = nd.ni_vp; | |||
| 2517 | ||||
| 2518 | error = kern_readlink_vp(vp, buf, bufseg, count, td); | |||
| 2519 | vput(vp); | |||
| 2520 | ||||
| 2521 | return (error); | |||
| 2522 | } | |||
| 2523 | ||||
| 2524 | /* | |||
| 2525 | * Helper function to readlink from a vnode | |||
| 2526 | */ | |||
| 2527 | static int | |||
| 2528 | kern_readlink_vp(struct vnode *vp, char *buf, enum uio_seg bufseg, size_t count, | |||
| 2529 | struct thread *td) | |||
| 2530 | { | |||
| 2531 | struct iovec aiov; | |||
| 2532 | struct uio auio; | |||
| 2533 | int error; | |||
| 2534 | ||||
| 2535 | ASSERT_VOP_LOCKED(vp, "kern_readlink_vp(): vp not locked")((void)0); | |||
| 2536 | #ifdef MAC1 | |||
| 2537 | error = mac_vnode_check_readlink(td->td_ucred, vp); | |||
| 2538 | if (error != 0) | |||
| 2539 | return (error); | |||
| 2540 | #endif | |||
| 2541 | if (vp->v_type != VLNK && (vp->v_vflag & VV_READLINK0x2000) == 0) | |||
| 2542 | return (EINVAL22); | |||
| 2543 | ||||
| 2544 | aiov.iov_base = buf; | |||
| 2545 | aiov.iov_len = count; | |||
| 2546 | auio.uio_iov = &aiov; | |||
| 2547 | auio.uio_iovcnt = 1; | |||
| 2548 | auio.uio_offset = 0; | |||
| 2549 | auio.uio_rw = UIO_READ; | |||
| 2550 | auio.uio_segflg = bufseg; | |||
| 2551 | auio.uio_td = td; | |||
| 2552 | auio.uio_resid = count; | |||
| 2553 | error = VOP_READLINK(vp, &auio, td->td_ucred); | |||
| 2554 | td->td_retvaltd_uretoff.tdu_retval[0] = count - auio.uio_resid; | |||
| 2555 | return (error); | |||
| 2556 | } | |||
| 2557 | ||||
| 2558 | /* | |||
| 2559 | * Common implementation code for chflags() and fchflags(). | |||
| 2560 | */ | |||
| 2561 | static int | |||
| 2562 | setfflags(struct thread *td, struct vnode *vp, u_long flags) | |||
| 2563 | { | |||
| 2564 | struct mount *mp; | |||
| 2565 | struct vattr vattr; | |||
| 2566 | int error; | |||
| 2567 | ||||
| 2568 | /* We can't support the value matching VNOVAL. */ | |||
| 2569 | if (flags == VNOVAL(-1)) | |||
| 2570 | return (EOPNOTSUPP45); | |||
| 2571 | ||||
| 2572 | /* | |||
| 2573 | * Prevent non-root users from setting flags on devices. When | |||
| 2574 | * a device is reused, users can retain ownership of the device | |||
| 2575 | * if they are allowed to set flags and programs assume that | |||
| 2576 | * chown can't fail when done as root. | |||
| 2577 | */ | |||
| 2578 | if (vp->v_type == VCHR || vp->v_type == VBLK) { | |||
| 2579 | error = priv_check(td, PRIV_VFS_CHFLAGS_DEV316); | |||
| 2580 | if (error != 0) | |||
| 2581 | return (error); | |||
| 2582 | } | |||
| 2583 | ||||
| 2584 | if ((error = vn_start_write(vp, &mp, V_WAIT0x0001 | PCATCH0x100)) != 0) | |||
| 2585 | return (error); | |||
| 2586 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 2587 | vattr.va_flags = flags; | |||
| 2588 | vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)_vn_lock(vp, 0x080000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 2588); | |||
| 2589 | #ifdef MAC1 | |||
| 2590 | error = mac_vnode_check_setflags(td->td_ucred, vp, vattr.va_flags); | |||
| 2591 | if (error == 0) | |||
| 2592 | #endif | |||
| 2593 | error = VOP_SETATTR(vp, &vattr, td->td_ucred); | |||
| 2594 | VOP_UNLOCK(vp, 0); | |||
| 2595 | vn_finished_write(mp); | |||
| 2596 | return (error); | |||
| 2597 | } | |||
| 2598 | ||||
| 2599 | /* | |||
| 2600 | * Change flags of a file given a path name. | |||
| 2601 | */ | |||
| 2602 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2603 | struct chflags_args { | |||
| 2604 | const char *path; | |||
| 2605 | u_long flags; | |||
| 2606 | }; | |||
| 2607 | #endif | |||
| 2608 | int | |||
| 2609 | sys_chflags(struct thread *td, struct chflags_args *uap) | |||
| 2610 | { | |||
| 2611 | ||||
| 2612 | return (kern_chflagsat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2613 | uap->flags, 0)); | |||
| 2614 | } | |||
| 2615 | ||||
| 2616 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2617 | struct chflagsat_args { | |||
| 2618 | int fd; | |||
| 2619 | const char *path; | |||
| 2620 | u_long flags; | |||
| 2621 | int atflag; | |||
| 2622 | } | |||
| 2623 | #endif | |||
| 2624 | int | |||
| 2625 | sys_chflagsat(struct thread *td, struct chflagsat_args *uap) | |||
| 2626 | { | |||
| 2627 | ||||
| 2628 | if ((uap->atflag & ~(AT_SYMLINK_NOFOLLOW0x0200 | AT_BENEATH0x1000)) != 0) | |||
| 2629 | return (EINVAL22); | |||
| 2630 | ||||
| 2631 | return (kern_chflagsat(td, uap->fd, uap->path, UIO_USERSPACE, | |||
| 2632 | uap->flags, uap->atflag)); | |||
| 2633 | } | |||
| 2634 | ||||
| 2635 | /* | |||
| 2636 | * Same as chflags() but doesn't follow symlinks. | |||
| 2637 | */ | |||
| 2638 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2639 | struct lchflags_args { | |||
| 2640 | const char *path; | |||
| 2641 | u_long flags; | |||
| 2642 | }; | |||
| 2643 | #endif | |||
| 2644 | int | |||
| 2645 | sys_lchflags(struct thread *td, struct lchflags_args *uap) | |||
| 2646 | { | |||
| 2647 | ||||
| 2648 | return (kern_chflagsat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2649 | uap->flags, AT_SYMLINK_NOFOLLOW0x0200)); | |||
| 2650 | } | |||
| 2651 | ||||
| 2652 | static int | |||
| 2653 | kern_chflagsat(struct thread *td, int fd, const char *path, | |||
| 2654 | enum uio_seg pathseg, u_long flags, int atflag) | |||
| 2655 | { | |||
| 2656 | struct nameidata nd; | |||
| 2657 | int error, follow; | |||
| 2658 | ||||
| 2659 | AUDIT_ARG_FFLAGS(flags)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fflags((flags)); } while (0); | |||
| 2660 | follow = (atflag & AT_SYMLINK_NOFOLLOW0x0200) ? NOFOLLOW0x0000 : FOLLOW0x0040; | |||
| 2661 | follow |= (atflag & AT_BENEATH0x1000) != 0 ? BENEATH0x0080 : 0; | |||
| 2662 | NDINIT_ATRIGHTS(&nd, LOOKUP, follow | AUDITVNODE1, pathseg, path, fd,NDINIT_ALL(&nd, 0, follow | 0x04000000, pathseg, path, fd , ((void *)0), &cap_fchflags_rights, td) | |||
| 2663 | &cap_fchflags_rights, td)NDINIT_ALL(&nd, 0, follow | 0x04000000, pathseg, path, fd , ((void *)0), &cap_fchflags_rights, td); | |||
| 2664 | if ((error = namei(&nd)) != 0) | |||
| 2665 | return (error); | |||
| 2666 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 2667 | error = setfflags(td, nd.ni_vp, flags); | |||
| 2668 | vrele(nd.ni_vp); | |||
| 2669 | return (error); | |||
| 2670 | } | |||
| 2671 | ||||
| 2672 | /* | |||
| 2673 | * Change flags of a file given a file descriptor. | |||
| 2674 | */ | |||
| 2675 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2676 | struct fchflags_args { | |||
| 2677 | int fd; | |||
| 2678 | u_long flags; | |||
| 2679 | }; | |||
| 2680 | #endif | |||
| 2681 | int | |||
| 2682 | sys_fchflags(struct thread *td, struct fchflags_args *uap) | |||
| 2683 | { | |||
| 2684 | struct file *fp; | |||
| 2685 | int error; | |||
| 2686 | ||||
| 2687 | AUDIT_ARG_FD(uap->fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((uap->fd)); } while (0); | |||
| 2688 | AUDIT_ARG_FFLAGS(uap->flags)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fflags((uap->flags)); } while (0); | |||
| 2689 | error = getvnode(td, uap->fd, &cap_fchflags_rights, | |||
| 2690 | &fp); | |||
| 2691 | if (error != 0) | |||
| 2692 | return (error); | |||
| 2693 | #ifdef AUDIT1 | |||
| 2694 | vn_lock(fp->f_vnode, LK_SHARED | LK_RETRY)_vn_lock(fp->f_vnode, 0x200000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 2694); | |||
| 2695 | AUDIT_ARG_VNODE1(fp->f_vnode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((fp->f_vnode)); } while (0); | |||
| 2696 | VOP_UNLOCK(fp->f_vnode, 0); | |||
| 2697 | #endif | |||
| 2698 | error = setfflags(td, fp->f_vnode, uap->flags); | |||
| 2699 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 2700 | return (error); | |||
| 2701 | } | |||
| 2702 | ||||
| 2703 | /* | |||
| 2704 | * Common implementation code for chmod(), lchmod() and fchmod(). | |||
| 2705 | */ | |||
| 2706 | int | |||
| 2707 | setfmode(struct thread *td, struct ucred *cred, struct vnode *vp, int mode) | |||
| 2708 | { | |||
| 2709 | struct mount *mp; | |||
| 2710 | struct vattr vattr; | |||
| 2711 | int error; | |||
| 2712 | ||||
| 2713 | if ((error = vn_start_write(vp, &mp, V_WAIT0x0001 | PCATCH0x100)) != 0) | |||
| 2714 | return (error); | |||
| 2715 | vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)_vn_lock(vp, 0x080000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 2715); | |||
| 2716 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 2717 | vattr.va_mode = mode & ALLPERMS(0004000|0002000|0001000|0000700|0000070|0000007); | |||
| 2718 | #ifdef MAC1 | |||
| 2719 | error = mac_vnode_check_setmode(cred, vp, vattr.va_mode); | |||
| 2720 | if (error == 0) | |||
| 2721 | #endif | |||
| 2722 | error = VOP_SETATTR(vp, &vattr, cred); | |||
| 2723 | VOP_UNLOCK(vp, 0); | |||
| 2724 | vn_finished_write(mp); | |||
| 2725 | return (error); | |||
| 2726 | } | |||
| 2727 | ||||
| 2728 | /* | |||
| 2729 | * Change mode of a file given path name. | |||
| 2730 | */ | |||
| 2731 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2732 | struct chmod_args { | |||
| 2733 | char *path; | |||
| 2734 | int mode; | |||
| 2735 | }; | |||
| 2736 | #endif | |||
| 2737 | int | |||
| 2738 | sys_chmod(struct thread *td, struct chmod_args *uap) | |||
| 2739 | { | |||
| 2740 | ||||
| 2741 | return (kern_fchmodat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2742 | uap->mode, 0)); | |||
| 2743 | } | |||
| 2744 | ||||
| 2745 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2746 | struct fchmodat_args { | |||
| 2747 | int dirfd; | |||
| 2748 | char *path; | |||
| 2749 | mode_t mode; | |||
| 2750 | int flag; | |||
| 2751 | } | |||
| 2752 | #endif | |||
| 2753 | int | |||
| 2754 | sys_fchmodat(struct thread *td, struct fchmodat_args *uap) | |||
| 2755 | { | |||
| 2756 | ||||
| 2757 | if ((uap->flag & ~(AT_SYMLINK_NOFOLLOW0x0200 | AT_BENEATH0x1000)) != 0) | |||
| 2758 | return (EINVAL22); | |||
| 2759 | ||||
| 2760 | return (kern_fchmodat(td, uap->fd, uap->path, UIO_USERSPACE, | |||
| 2761 | uap->mode, uap->flag)); | |||
| 2762 | } | |||
| 2763 | ||||
| 2764 | /* | |||
| 2765 | * Change mode of a file given path name (don't follow links.) | |||
| 2766 | */ | |||
| 2767 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2768 | struct lchmod_args { | |||
| 2769 | char *path; | |||
| 2770 | int mode; | |||
| 2771 | }; | |||
| 2772 | #endif | |||
| 2773 | int | |||
| 2774 | sys_lchmod(struct thread *td, struct lchmod_args *uap) | |||
| 2775 | { | |||
| 2776 | ||||
| 2777 | return (kern_fchmodat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2778 | uap->mode, AT_SYMLINK_NOFOLLOW0x0200)); | |||
| 2779 | } | |||
| 2780 | ||||
| 2781 | int | |||
| 2782 | kern_fchmodat(struct thread *td, int fd, const char *path, | |||
| 2783 | enum uio_seg pathseg, mode_t mode, int flag) | |||
| 2784 | { | |||
| 2785 | struct nameidata nd; | |||
| 2786 | int error, follow; | |||
| 2787 | ||||
| 2788 | AUDIT_ARG_MODE(mode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_mode((mode)); } while (0); | |||
| 2789 | follow = (flag & AT_SYMLINK_NOFOLLOW0x0200) != 0 ? NOFOLLOW0x0000 : FOLLOW0x0040; | |||
| 2790 | follow |= (flag & AT_BENEATH0x1000) != 0 ? BENEATH0x0080 : 0; | |||
| 2791 | NDINIT_ATRIGHTS(&nd, LOOKUP, follow | AUDITVNODE1, pathseg, path, fd,NDINIT_ALL(&nd, 0, follow | 0x04000000, pathseg, path, fd , ((void *)0), &cap_fchmod_rights, td) | |||
| 2792 | &cap_fchmod_rights, td)NDINIT_ALL(&nd, 0, follow | 0x04000000, pathseg, path, fd , ((void *)0), &cap_fchmod_rights, td); | |||
| 2793 | if ((error = namei(&nd)) != 0) | |||
| 2794 | return (error); | |||
| 2795 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 2796 | error = setfmode(td, td->td_ucred, nd.ni_vp, mode); | |||
| 2797 | vrele(nd.ni_vp); | |||
| 2798 | return (error); | |||
| 2799 | } | |||
| 2800 | ||||
| 2801 | /* | |||
| 2802 | * Change mode of a file given a file descriptor. | |||
| 2803 | */ | |||
| 2804 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2805 | struct fchmod_args { | |||
| 2806 | int fd; | |||
| 2807 | int mode; | |||
| 2808 | }; | |||
| 2809 | #endif | |||
| 2810 | int | |||
| 2811 | sys_fchmod(struct thread *td, struct fchmod_args *uap) | |||
| 2812 | { | |||
| 2813 | struct file *fp; | |||
| 2814 | int error; | |||
| 2815 | ||||
| 2816 | AUDIT_ARG_FD(uap->fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((uap->fd)); } while (0); | |||
| 2817 | AUDIT_ARG_MODE(uap->mode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_mode((uap->mode)); } while (0 ); | |||
| 2818 | ||||
| 2819 | error = fget(td, uap->fd, &cap_fchmod_rights, &fp); | |||
| 2820 | if (error != 0) | |||
| 2821 | return (error); | |||
| 2822 | error = fo_chmod(fp, uap->mode, td->td_ucred, td); | |||
| 2823 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 2824 | return (error); | |||
| 2825 | } | |||
| 2826 | ||||
| 2827 | /* | |||
| 2828 | * Common implementation for chown(), lchown(), and fchown() | |||
| 2829 | */ | |||
| 2830 | int | |||
| 2831 | setfown(struct thread *td, struct ucred *cred, struct vnode *vp, uid_t uid, | |||
| 2832 | gid_t gid) | |||
| 2833 | { | |||
| 2834 | struct mount *mp; | |||
| 2835 | struct vattr vattr; | |||
| 2836 | int error; | |||
| 2837 | ||||
| 2838 | if ((error = vn_start_write(vp, &mp, V_WAIT0x0001 | PCATCH0x100)) != 0) | |||
| 2839 | return (error); | |||
| 2840 | vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)_vn_lock(vp, 0x080000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 2840); | |||
| 2841 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 2842 | vattr.va_uid = uid; | |||
| 2843 | vattr.va_gid = gid; | |||
| 2844 | #ifdef MAC1 | |||
| 2845 | error = mac_vnode_check_setowner(cred, vp, vattr.va_uid, | |||
| 2846 | vattr.va_gid); | |||
| 2847 | if (error == 0) | |||
| 2848 | #endif | |||
| 2849 | error = VOP_SETATTR(vp, &vattr, cred); | |||
| 2850 | VOP_UNLOCK(vp, 0); | |||
| 2851 | vn_finished_write(mp); | |||
| 2852 | return (error); | |||
| 2853 | } | |||
| 2854 | ||||
| 2855 | /* | |||
| 2856 | * Set ownership given a path name. | |||
| 2857 | */ | |||
| 2858 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2859 | struct chown_args { | |||
| 2860 | char *path; | |||
| 2861 | int uid; | |||
| 2862 | int gid; | |||
| 2863 | }; | |||
| 2864 | #endif | |||
| 2865 | int | |||
| 2866 | sys_chown(struct thread *td, struct chown_args *uap) | |||
| 2867 | { | |||
| 2868 | ||||
| 2869 | return (kern_fchownat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, uap->uid, | |||
| 2870 | uap->gid, 0)); | |||
| 2871 | } | |||
| 2872 | ||||
| 2873 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2874 | struct fchownat_args { | |||
| 2875 | int fd; | |||
| 2876 | const char * path; | |||
| 2877 | uid_t uid; | |||
| 2878 | gid_t gid; | |||
| 2879 | int flag; | |||
| 2880 | }; | |||
| 2881 | #endif | |||
| 2882 | int | |||
| 2883 | sys_fchownat(struct thread *td, struct fchownat_args *uap) | |||
| 2884 | { | |||
| 2885 | ||||
| 2886 | if ((uap->flag & ~(AT_SYMLINK_NOFOLLOW0x0200 | AT_BENEATH0x1000)) != 0) | |||
| 2887 | return (EINVAL22); | |||
| 2888 | ||||
| 2889 | return (kern_fchownat(td, uap->fd, uap->path, UIO_USERSPACE, uap->uid, | |||
| 2890 | uap->gid, uap->flag)); | |||
| 2891 | } | |||
| 2892 | ||||
| 2893 | int | |||
| 2894 | kern_fchownat(struct thread *td, int fd, const char *path, | |||
| 2895 | enum uio_seg pathseg, int uid, int gid, int flag) | |||
| 2896 | { | |||
| 2897 | struct nameidata nd; | |||
| 2898 | int error, follow; | |||
| 2899 | ||||
| 2900 | AUDIT_ARG_OWNER(uid, gid)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_owner((uid), (gid)); } while (0); | |||
| 2901 | follow = (flag & AT_SYMLINK_NOFOLLOW0x0200) ? NOFOLLOW0x0000 : FOLLOW0x0040; | |||
| 2902 | follow |= (flag & AT_BENEATH0x1000) != 0 ? BENEATH0x0080 : 0; | |||
| 2903 | NDINIT_ATRIGHTS(&nd, LOOKUP, follow | AUDITVNODE1, pathseg, path, fd,NDINIT_ALL(&nd, 0, follow | 0x04000000, pathseg, path, fd , ((void *)0), &cap_fchown_rights, td) | |||
| 2904 | &cap_fchown_rights, td)NDINIT_ALL(&nd, 0, follow | 0x04000000, pathseg, path, fd , ((void *)0), &cap_fchown_rights, td); | |||
| 2905 | ||||
| 2906 | if ((error = namei(&nd)) != 0) | |||
| 2907 | return (error); | |||
| 2908 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 2909 | error = setfown(td, td->td_ucred, nd.ni_vp, uid, gid); | |||
| 2910 | vrele(nd.ni_vp); | |||
| 2911 | return (error); | |||
| 2912 | } | |||
| 2913 | ||||
| 2914 | /* | |||
| 2915 | * Set ownership given a path name, do not cross symlinks. | |||
| 2916 | */ | |||
| 2917 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2918 | struct lchown_args { | |||
| 2919 | char *path; | |||
| 2920 | int uid; | |||
| 2921 | int gid; | |||
| 2922 | }; | |||
| 2923 | #endif | |||
| 2924 | int | |||
| 2925 | sys_lchown(struct thread *td, struct lchown_args *uap) | |||
| 2926 | { | |||
| 2927 | ||||
| 2928 | return (kern_fchownat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 2929 | uap->uid, uap->gid, AT_SYMLINK_NOFOLLOW0x0200)); | |||
| 2930 | } | |||
| 2931 | ||||
| 2932 | /* | |||
| 2933 | * Set ownership given a file descriptor. | |||
| 2934 | */ | |||
| 2935 | #ifndef _SYS_SYSPROTO_H_ | |||
| 2936 | struct fchown_args { | |||
| 2937 | int fd; | |||
| 2938 | int uid; | |||
| 2939 | int gid; | |||
| 2940 | }; | |||
| 2941 | #endif | |||
| 2942 | int | |||
| 2943 | sys_fchown(struct thread *td, struct fchown_args *uap) | |||
| 2944 | { | |||
| 2945 | struct file *fp; | |||
| 2946 | int error; | |||
| 2947 | ||||
| 2948 | AUDIT_ARG_FD(uap->fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((uap->fd)); } while (0); | |||
| 2949 | AUDIT_ARG_OWNER(uap->uid, uap->gid)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_owner((uap->uid), (uap->gid )); } while (0); | |||
| 2950 | error = fget(td, uap->fd, &cap_fchown_rights, &fp); | |||
| 2951 | if (error != 0) | |||
| 2952 | return (error); | |||
| 2953 | error = fo_chown(fp, uap->uid, uap->gid, td->td_ucred, td); | |||
| 2954 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 2955 | return (error); | |||
| 2956 | } | |||
| 2957 | ||||
| 2958 | /* | |||
| 2959 | * Common implementation code for utimes(), lutimes(), and futimes(). | |||
| 2960 | */ | |||
| 2961 | static int | |||
| 2962 | getutimes(const struct timeval *usrtvp, enum uio_seg tvpseg, | |||
| 2963 | struct timespec *tsp) | |||
| 2964 | { | |||
| 2965 | struct timeval tv[2]; | |||
| 2966 | const struct timeval *tvp; | |||
| 2967 | int error; | |||
| 2968 | ||||
| 2969 | if (usrtvp == NULL((void *)0)) { | |||
| 2970 | vfs_timestamp(&tsp[0]); | |||
| 2971 | tsp[1] = tsp[0]; | |||
| 2972 | } else { | |||
| 2973 | if (tvpseg == UIO_SYSSPACE) { | |||
| 2974 | tvp = usrtvp; | |||
| 2975 | } else { | |||
| 2976 | if ((error = copyin(usrtvp, tv, sizeof(tv))) != 0) | |||
| 2977 | return (error); | |||
| 2978 | tvp = tv; | |||
| 2979 | } | |||
| 2980 | ||||
| 2981 | if (tvp[0].tv_usec < 0 || tvp[0].tv_usec >= 1000000 || | |||
| 2982 | tvp[1].tv_usec < 0 || tvp[1].tv_usec >= 1000000) | |||
| 2983 | return (EINVAL22); | |||
| 2984 | TIMEVAL_TO_TIMESPEC(&tvp[0], &tsp[0])do { (&tsp[0])->tv_sec = (&tvp[0])->tv_sec; (& tsp[0])->tv_nsec = (&tvp[0])->tv_usec * 1000; } while (0); | |||
| 2985 | TIMEVAL_TO_TIMESPEC(&tvp[1], &tsp[1])do { (&tsp[1])->tv_sec = (&tvp[1])->tv_sec; (& tsp[1])->tv_nsec = (&tvp[1])->tv_usec * 1000; } while (0); | |||
| 2986 | } | |||
| 2987 | return (0); | |||
| 2988 | } | |||
| 2989 | ||||
| 2990 | /* | |||
| 2991 | * Common implementation code for futimens(), utimensat(). | |||
| 2992 | */ | |||
| 2993 | #define UTIMENS_NULL0x1 0x1 | |||
| 2994 | #define UTIMENS_EXIT0x2 0x2 | |||
| 2995 | static int | |||
| 2996 | getutimens(const struct timespec *usrtsp, enum uio_seg tspseg, | |||
| 2997 | struct timespec *tsp, int *retflags) | |||
| 2998 | { | |||
| 2999 | struct timespec tsnow; | |||
| 3000 | int error; | |||
| 3001 | ||||
| 3002 | vfs_timestamp(&tsnow); | |||
| 3003 | *retflags = 0; | |||
| 3004 | if (usrtsp == NULL((void *)0)) { | |||
| 3005 | tsp[0] = tsnow; | |||
| 3006 | tsp[1] = tsnow; | |||
| 3007 | *retflags |= UTIMENS_NULL0x1; | |||
| 3008 | return (0); | |||
| 3009 | } | |||
| 3010 | if (tspseg == UIO_SYSSPACE) { | |||
| 3011 | tsp[0] = usrtsp[0]; | |||
| 3012 | tsp[1] = usrtsp[1]; | |||
| 3013 | } else if ((error = copyin(usrtsp, tsp, sizeof(*tsp) * 2)) != 0) | |||
| 3014 | return (error); | |||
| 3015 | if (tsp[0].tv_nsec == UTIME_OMIT-2 && tsp[1].tv_nsec == UTIME_OMIT-2) | |||
| 3016 | *retflags |= UTIMENS_EXIT0x2; | |||
| 3017 | if (tsp[0].tv_nsec == UTIME_NOW-1 && tsp[1].tv_nsec == UTIME_NOW-1) | |||
| 3018 | *retflags |= UTIMENS_NULL0x1; | |||
| 3019 | if (tsp[0].tv_nsec == UTIME_OMIT-2) | |||
| 3020 | tsp[0].tv_sec = VNOVAL(-1); | |||
| 3021 | else if (tsp[0].tv_nsec == UTIME_NOW-1) | |||
| 3022 | tsp[0] = tsnow; | |||
| 3023 | else if (tsp[0].tv_nsec < 0 || tsp[0].tv_nsec >= 1000000000L) | |||
| 3024 | return (EINVAL22); | |||
| 3025 | if (tsp[1].tv_nsec == UTIME_OMIT-2) | |||
| 3026 | tsp[1].tv_sec = VNOVAL(-1); | |||
| 3027 | else if (tsp[1].tv_nsec == UTIME_NOW-1) | |||
| 3028 | tsp[1] = tsnow; | |||
| 3029 | else if (tsp[1].tv_nsec < 0 || tsp[1].tv_nsec >= 1000000000L) | |||
| 3030 | return (EINVAL22); | |||
| 3031 | ||||
| 3032 | return (0); | |||
| 3033 | } | |||
| 3034 | ||||
| 3035 | /* | |||
| 3036 | * Common implementation code for utimes(), lutimes(), futimes(), futimens(), | |||
| 3037 | * and utimensat(). | |||
| 3038 | */ | |||
| 3039 | static int | |||
| 3040 | setutimes(struct thread *td, struct vnode *vp, const struct timespec *ts, | |||
| 3041 | int numtimes, int nullflag) | |||
| 3042 | { | |||
| 3043 | struct mount *mp; | |||
| 3044 | struct vattr vattr; | |||
| 3045 | int error, setbirthtime; | |||
| 3046 | ||||
| 3047 | if ((error = vn_start_write(vp, &mp, V_WAIT0x0001 | PCATCH0x100)) != 0) | |||
| 3048 | return (error); | |||
| 3049 | vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)_vn_lock(vp, 0x080000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 3049); | |||
| 3050 | setbirthtime = 0; | |||
| 3051 | if (numtimes < 3 && !VOP_GETATTR(vp, &vattr, td->td_ucred) && | |||
| 3052 | timespeccmp(&ts[1], &vattr.va_birthtime, < )(((&ts[1])->tv_sec == (&vattr.va_birthtime)->tv_sec ) ? ((&ts[1])->tv_nsec < (&vattr.va_birthtime)-> tv_nsec) : ((&ts[1])->tv_sec < (&vattr.va_birthtime )->tv_sec))) | |||
| 3053 | setbirthtime = 1; | |||
| 3054 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 3055 | vattr.va_atime = ts[0]; | |||
| 3056 | vattr.va_mtime = ts[1]; | |||
| 3057 | if (setbirthtime) | |||
| 3058 | vattr.va_birthtime = ts[1]; | |||
| 3059 | if (numtimes > 2) | |||
| 3060 | vattr.va_birthtime = ts[2]; | |||
| 3061 | if (nullflag) | |||
| 3062 | vattr.va_vaflags |= VA_UTIMES_NULL0x01; | |||
| 3063 | #ifdef MAC1 | |||
| 3064 | error = mac_vnode_check_setutimes(td->td_ucred, vp, vattr.va_atime, | |||
| 3065 | vattr.va_mtime); | |||
| 3066 | #endif | |||
| 3067 | if (error == 0) | |||
| 3068 | error = VOP_SETATTR(vp, &vattr, td->td_ucred); | |||
| 3069 | VOP_UNLOCK(vp, 0); | |||
| 3070 | vn_finished_write(mp); | |||
| 3071 | return (error); | |||
| 3072 | } | |||
| 3073 | ||||
| 3074 | /* | |||
| 3075 | * Set the access and modification times of a file. | |||
| 3076 | */ | |||
| 3077 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3078 | struct utimes_args { | |||
| 3079 | char *path; | |||
| 3080 | struct timeval *tptr; | |||
| 3081 | }; | |||
| 3082 | #endif | |||
| 3083 | int | |||
| 3084 | sys_utimes(struct thread *td, struct utimes_args *uap) | |||
| 3085 | { | |||
| 3086 | ||||
| 3087 | return (kern_utimesat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 3088 | uap->tptr, UIO_USERSPACE)); | |||
| 3089 | } | |||
| 3090 | ||||
| 3091 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3092 | struct futimesat_args { | |||
| 3093 | int fd; | |||
| 3094 | const char * path; | |||
| 3095 | const struct timeval * times; | |||
| 3096 | }; | |||
| 3097 | #endif | |||
| 3098 | int | |||
| 3099 | sys_futimesat(struct thread *td, struct futimesat_args *uap) | |||
| 3100 | { | |||
| 3101 | ||||
| 3102 | return (kern_utimesat(td, uap->fd, uap->path, UIO_USERSPACE, | |||
| 3103 | uap->times, UIO_USERSPACE)); | |||
| 3104 | } | |||
| 3105 | ||||
| 3106 | int | |||
| 3107 | kern_utimesat(struct thread *td, int fd, const char *path, | |||
| 3108 | enum uio_seg pathseg, struct timeval *tptr, enum uio_seg tptrseg) | |||
| 3109 | { | |||
| 3110 | struct nameidata nd; | |||
| 3111 | struct timespec ts[2]; | |||
| 3112 | int error; | |||
| 3113 | ||||
| 3114 | if ((error = getutimes(tptr, tptrseg, ts)) != 0) | |||
| 3115 | return (error); | |||
| 3116 | NDINIT_ATRIGHTS(&nd, LOOKUP, FOLLOW | AUDITVNODE1, pathseg, path, fd,NDINIT_ALL(&nd, 0, 0x0040 | 0x04000000, pathseg, path, fd , ((void *)0), &cap_futimes_rights, td) | |||
| 3117 | &cap_futimes_rights, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x04000000, pathseg, path, fd , ((void *)0), &cap_futimes_rights, td); | |||
| 3118 | ||||
| 3119 | if ((error = namei(&nd)) != 0) | |||
| 3120 | return (error); | |||
| 3121 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3122 | error = setutimes(td, nd.ni_vp, ts, 2, tptr == NULL((void *)0)); | |||
| 3123 | vrele(nd.ni_vp); | |||
| 3124 | return (error); | |||
| 3125 | } | |||
| 3126 | ||||
| 3127 | /* | |||
| 3128 | * Set the access and modification times of a file. | |||
| 3129 | */ | |||
| 3130 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3131 | struct lutimes_args { | |||
| 3132 | char *path; | |||
| 3133 | struct timeval *tptr; | |||
| 3134 | }; | |||
| 3135 | #endif | |||
| 3136 | int | |||
| 3137 | sys_lutimes(struct thread *td, struct lutimes_args *uap) | |||
| 3138 | { | |||
| 3139 | ||||
| 3140 | return (kern_lutimes(td, uap->path, UIO_USERSPACE, uap->tptr, | |||
| 3141 | UIO_USERSPACE)); | |||
| 3142 | } | |||
| 3143 | ||||
| 3144 | int | |||
| 3145 | kern_lutimes(struct thread *td, const char *path, enum uio_seg pathseg, | |||
| 3146 | struct timeval *tptr, enum uio_seg tptrseg) | |||
| 3147 | { | |||
| 3148 | struct timespec ts[2]; | |||
| 3149 | struct nameidata nd; | |||
| 3150 | int error; | |||
| 3151 | ||||
| 3152 | if ((error = getutimes(tptr, tptrseg, ts)) != 0) | |||
| 3153 | return (error); | |||
| 3154 | NDINIT(&nd, LOOKUP, NOFOLLOW | AUDITVNODE1, pathseg, path, td)NDINIT_ALL(&nd, 0, 0x0000 | 0x04000000, pathseg, path, -100 , ((void *)0), 0, td); | |||
| 3155 | if ((error = namei(&nd)) != 0) | |||
| 3156 | return (error); | |||
| 3157 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3158 | error = setutimes(td, nd.ni_vp, ts, 2, tptr == NULL((void *)0)); | |||
| 3159 | vrele(nd.ni_vp); | |||
| 3160 | return (error); | |||
| 3161 | } | |||
| 3162 | ||||
| 3163 | /* | |||
| 3164 | * Set the access and modification times of a file. | |||
| 3165 | */ | |||
| 3166 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3167 | struct futimes_args { | |||
| 3168 | int fd; | |||
| 3169 | struct timeval *tptr; | |||
| 3170 | }; | |||
| 3171 | #endif | |||
| 3172 | int | |||
| 3173 | sys_futimes(struct thread *td, struct futimes_args *uap) | |||
| 3174 | { | |||
| 3175 | ||||
| 3176 | return (kern_futimes(td, uap->fd, uap->tptr, UIO_USERSPACE)); | |||
| 3177 | } | |||
| 3178 | ||||
| 3179 | int | |||
| 3180 | kern_futimes(struct thread *td, int fd, struct timeval *tptr, | |||
| 3181 | enum uio_seg tptrseg) | |||
| 3182 | { | |||
| 3183 | struct timespec ts[2]; | |||
| 3184 | struct file *fp; | |||
| 3185 | int error; | |||
| 3186 | ||||
| 3187 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 3188 | error = getutimes(tptr, tptrseg, ts); | |||
| 3189 | if (error != 0) | |||
| 3190 | return (error); | |||
| 3191 | error = getvnode(td, fd, &cap_futimes_rights, &fp); | |||
| 3192 | if (error != 0) | |||
| 3193 | return (error); | |||
| 3194 | #ifdef AUDIT1 | |||
| 3195 | vn_lock(fp->f_vnode, LK_SHARED | LK_RETRY)_vn_lock(fp->f_vnode, 0x200000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 3195); | |||
| 3196 | AUDIT_ARG_VNODE1(fp->f_vnode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((fp->f_vnode)); } while (0); | |||
| 3197 | VOP_UNLOCK(fp->f_vnode, 0); | |||
| 3198 | #endif | |||
| 3199 | error = setutimes(td, fp->f_vnode, ts, 2, tptr == NULL((void *)0)); | |||
| 3200 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 3201 | return (error); | |||
| 3202 | } | |||
| 3203 | ||||
| 3204 | int | |||
| 3205 | sys_futimens(struct thread *td, struct futimens_args *uap) | |||
| 3206 | { | |||
| 3207 | ||||
| 3208 | return (kern_futimens(td, uap->fd, uap->times, UIO_USERSPACE)); | |||
| 3209 | } | |||
| 3210 | ||||
| 3211 | int | |||
| 3212 | kern_futimens(struct thread *td, int fd, struct timespec *tptr, | |||
| 3213 | enum uio_seg tptrseg) | |||
| 3214 | { | |||
| 3215 | struct timespec ts[2]; | |||
| 3216 | struct file *fp; | |||
| 3217 | int error, flags; | |||
| 3218 | ||||
| 3219 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 3220 | error = getutimens(tptr, tptrseg, ts, &flags); | |||
| 3221 | if (error != 0) | |||
| 3222 | return (error); | |||
| 3223 | if (flags & UTIMENS_EXIT0x2) | |||
| 3224 | return (0); | |||
| 3225 | error = getvnode(td, fd, &cap_futimes_rights, &fp); | |||
| 3226 | if (error != 0) | |||
| 3227 | return (error); | |||
| 3228 | #ifdef AUDIT1 | |||
| 3229 | vn_lock(fp->f_vnode, LK_SHARED | LK_RETRY)_vn_lock(fp->f_vnode, 0x200000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 3229); | |||
| 3230 | AUDIT_ARG_VNODE1(fp->f_vnode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((fp->f_vnode)); } while (0); | |||
| 3231 | VOP_UNLOCK(fp->f_vnode, 0); | |||
| 3232 | #endif | |||
| 3233 | error = setutimes(td, fp->f_vnode, ts, 2, flags & UTIMENS_NULL0x1); | |||
| 3234 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 3235 | return (error); | |||
| 3236 | } | |||
| 3237 | ||||
| 3238 | int | |||
| 3239 | sys_utimensat(struct thread *td, struct utimensat_args *uap) | |||
| 3240 | { | |||
| 3241 | ||||
| 3242 | return (kern_utimensat(td, uap->fd, uap->path, UIO_USERSPACE, | |||
| 3243 | uap->times, UIO_USERSPACE, uap->flag)); | |||
| 3244 | } | |||
| 3245 | ||||
| 3246 | int | |||
| 3247 | kern_utimensat(struct thread *td, int fd, const char *path, | |||
| 3248 | enum uio_seg pathseg, struct timespec *tptr, enum uio_seg tptrseg, | |||
| 3249 | int flag) | |||
| 3250 | { | |||
| 3251 | struct nameidata nd; | |||
| 3252 | struct timespec ts[2]; | |||
| 3253 | int error, flags; | |||
| 3254 | ||||
| 3255 | if ((flag & ~(AT_SYMLINK_NOFOLLOW0x0200 | AT_BENEATH0x1000)) != 0) | |||
| 3256 | return (EINVAL22); | |||
| 3257 | ||||
| 3258 | if ((error = getutimens(tptr, tptrseg, ts, &flags)) != 0) | |||
| 3259 | return (error); | |||
| 3260 | NDINIT_ATRIGHTS(&nd, LOOKUP, ((flag & AT_SYMLINK_NOFOLLOW) ? NOFOLLOW :NDINIT_ALL(&nd, 0, ((flag & 0x0200) ? 0x0000 : 0x0040 ) | ((flag & 0x1000) != 0 ? 0x0080 : 0) | 0x04000000, pathseg , path, fd, ((void *)0), &cap_futimes_rights, td) | |||
| 3261 | FOLLOW) | ((flag & AT_BENEATH) != 0 ? BENEATH : 0) | AUDITVNODE1,NDINIT_ALL(&nd, 0, ((flag & 0x0200) ? 0x0000 : 0x0040 ) | ((flag & 0x1000) != 0 ? 0x0080 : 0) | 0x04000000, pathseg , path, fd, ((void *)0), &cap_futimes_rights, td) | |||
| 3262 | pathseg, path, fd, &cap_futimes_rights, td)NDINIT_ALL(&nd, 0, ((flag & 0x0200) ? 0x0000 : 0x0040 ) | ((flag & 0x1000) != 0 ? 0x0080 : 0) | 0x04000000, pathseg , path, fd, ((void *)0), &cap_futimes_rights, td); | |||
| 3263 | if ((error = namei(&nd)) != 0) | |||
| 3264 | return (error); | |||
| 3265 | /* | |||
| 3266 | * We are allowed to call namei() regardless of 2xUTIME_OMIT. | |||
| 3267 | * POSIX states: | |||
| 3268 | * "If both tv_nsec fields are UTIME_OMIT... EACCESS may be detected." | |||
| 3269 | * "Search permission is denied by a component of the path prefix." | |||
| 3270 | */ | |||
| 3271 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3272 | if ((flags & UTIMENS_EXIT0x2) == 0) | |||
| 3273 | error = setutimes(td, nd.ni_vp, ts, 2, flags & UTIMENS_NULL0x1); | |||
| 3274 | vrele(nd.ni_vp); | |||
| 3275 | return (error); | |||
| 3276 | } | |||
| 3277 | ||||
| 3278 | /* | |||
| 3279 | * Truncate a file given its path name. | |||
| 3280 | */ | |||
| 3281 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3282 | struct truncate_args { | |||
| 3283 | char *path; | |||
| 3284 | int pad; | |||
| 3285 | off_t length; | |||
| 3286 | }; | |||
| 3287 | #endif | |||
| 3288 | int | |||
| 3289 | sys_truncate(struct thread *td, struct truncate_args *uap) | |||
| 3290 | { | |||
| 3291 | ||||
| 3292 | return (kern_truncate(td, uap->path, UIO_USERSPACE, uap->length)); | |||
| 3293 | } | |||
| 3294 | ||||
| 3295 | int | |||
| 3296 | kern_truncate(struct thread *td, const char *path, enum uio_seg pathseg, | |||
| 3297 | off_t length) | |||
| 3298 | { | |||
| 3299 | struct mount *mp; | |||
| 3300 | struct vnode *vp; | |||
| 3301 | void *rl_cookie; | |||
| 3302 | struct vattr vattr; | |||
| 3303 | struct nameidata nd; | |||
| 3304 | int error; | |||
| 3305 | ||||
| 3306 | if (length < 0) | |||
| 3307 | return(EINVAL22); | |||
| 3308 | NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE1, pathseg, path, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x04000000, pathseg, path, -100 , ((void *)0), 0, td); | |||
| 3309 | if ((error = namei(&nd)) != 0) | |||
| 3310 | return (error); | |||
| 3311 | vp = nd.ni_vp; | |||
| 3312 | rl_cookie = vn_rangelock_wlock(vp, 0, OFF_MAX)rangelock_wlock(&(vp)->v_rl, (0), (0x7fffffffffffffff) , (&(vp)->v_interlock)); | |||
| 3313 | if ((error = vn_start_write(vp, &mp, V_WAIT0x0001 | PCATCH0x100)) != 0) { | |||
| 3314 | vn_rangelock_unlock(vp, rl_cookie)rangelock_unlock(&(vp)->v_rl, (rl_cookie), (&(vp)-> v_interlock)); | |||
| 3315 | vrele(vp); | |||
| 3316 | return (error); | |||
| 3317 | } | |||
| 3318 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3319 | vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)_vn_lock(vp, 0x080000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 3319); | |||
| 3320 | if (vp->v_type == VDIR) | |||
| 3321 | error = EISDIR21; | |||
| 3322 | #ifdef MAC1 | |||
| 3323 | else if ((error = mac_vnode_check_write(td->td_ucred, NOCRED((struct ucred *)0), vp))) { | |||
| 3324 | } | |||
| 3325 | #endif | |||
| 3326 | else if ((error = vn_writechk(vp)) == 0 && | |||
| 3327 | (error = VOP_ACCESS(vp, VWRITE000000000200, td->td_ucred, td)) == 0) { | |||
| 3328 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 3329 | vattr.va_size = length; | |||
| 3330 | error = VOP_SETATTR(vp, &vattr, td->td_ucred); | |||
| 3331 | } | |||
| 3332 | VOP_UNLOCK(vp, 0); | |||
| 3333 | vn_finished_write(mp); | |||
| 3334 | vn_rangelock_unlock(vp, rl_cookie)rangelock_unlock(&(vp)->v_rl, (rl_cookie), (&(vp)-> v_interlock)); | |||
| 3335 | vrele(vp); | |||
| 3336 | return (error); | |||
| 3337 | } | |||
| 3338 | ||||
| 3339 | #if defined(COMPAT_43) | |||
| 3340 | /* | |||
| 3341 | * Truncate a file given its path name. | |||
| 3342 | */ | |||
| 3343 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3344 | struct otruncate_args { | |||
| 3345 | char *path; | |||
| 3346 | long length; | |||
| 3347 | }; | |||
| 3348 | #endif | |||
| 3349 | int | |||
| 3350 | otruncate(struct thread *td, struct otruncate_args *uap) | |||
| 3351 | { | |||
| 3352 | ||||
| 3353 | return (kern_truncate(td, uap->path, UIO_USERSPACE, uap->length)); | |||
| 3354 | } | |||
| 3355 | #endif /* COMPAT_43 */ | |||
| 3356 | ||||
| 3357 | #if defined(COMPAT_FREEBSD61) | |||
| 3358 | /* Versions with the pad argument */ | |||
| 3359 | int | |||
| 3360 | freebsd6_truncate(struct thread *td, struct freebsd6_truncate_args *uap) | |||
| 3361 | { | |||
| 3362 | ||||
| 3363 | return (kern_truncate(td, uap->path, UIO_USERSPACE, uap->length)); | |||
| 3364 | } | |||
| 3365 | ||||
| 3366 | int | |||
| 3367 | freebsd6_ftruncate(struct thread *td, struct freebsd6_ftruncate_args *uap) | |||
| 3368 | { | |||
| 3369 | ||||
| 3370 | return (kern_ftruncate(td, uap->fd, uap->length)); | |||
| 3371 | } | |||
| 3372 | #endif | |||
| 3373 | ||||
| 3374 | int | |||
| 3375 | kern_fsync(struct thread *td, int fd, bool fullsync) | |||
| 3376 | { | |||
| 3377 | struct vnode *vp; | |||
| 3378 | struct mount *mp; | |||
| 3379 | struct file *fp; | |||
| 3380 | int error, lock_flags; | |||
| 3381 | ||||
| 3382 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 3383 | error = getvnode(td, fd, &cap_fsync_rights, &fp); | |||
| 3384 | if (error != 0) | |||
| 3385 | return (error); | |||
| 3386 | vp = fp->f_vnode; | |||
| 3387 | #if 0 | |||
| 3388 | if (!fullsync) | |||
| 3389 | /* XXXKIB: compete outstanding aio writes */; | |||
| 3390 | #endif | |||
| 3391 | error = vn_start_write(vp, &mp, V_WAIT0x0001 | PCATCH0x100); | |||
| 3392 | if (error != 0) | |||
| 3393 | goto drop; | |||
| 3394 | if (MNT_SHARED_WRITES(mp) || | |||
| 3395 | ((mp == NULL((void *)0)) && MNT_SHARED_WRITES(vp->v_mount))) { | |||
| 3396 | lock_flags = LK_SHARED0x200000; | |||
| 3397 | } else { | |||
| 3398 | lock_flags = LK_EXCLUSIVE0x080000; | |||
| 3399 | } | |||
| 3400 | vn_lock(vp, lock_flags | LK_RETRY)_vn_lock(vp, lock_flags | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 3400); | |||
| 3401 | AUDIT_ARG_VNODE1(vp)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((vp)); } while (0); | |||
| 3402 | if (vp->v_objectv_bufobj.bo_object != NULL((void *)0)) { | |||
| 3403 | VM_OBJECT_WLOCK(vp->v_object)_rw_wlock_cookie(&((&(vp->v_bufobj.bo_object)-> lock))->rw_lock, "/root/freebsd/sys/kern/vfs_syscalls.c", 3403 ); | |||
| 3404 | vm_object_page_clean(vp->v_objectv_bufobj.bo_object, 0, 0, 0); | |||
| 3405 | VM_OBJECT_WUNLOCK(vp->v_object)_rw_wunlock_cookie(&((&(vp->v_bufobj.bo_object)-> lock))->rw_lock, "/root/freebsd/sys/kern/vfs_syscalls.c", 3405 ); | |||
| 3406 | } | |||
| 3407 | error = fullsync ? VOP_FSYNC(vp, MNT_WAIT1, td) : VOP_FDATASYNC(vp, td); | |||
| 3408 | VOP_UNLOCK(vp, 0); | |||
| 3409 | vn_finished_write(mp); | |||
| 3410 | drop: | |||
| 3411 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 3412 | return (error); | |||
| 3413 | } | |||
| 3414 | ||||
| 3415 | /* | |||
| 3416 | * Sync an open file. | |||
| 3417 | */ | |||
| 3418 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3419 | struct fsync_args { | |||
| 3420 | int fd; | |||
| 3421 | }; | |||
| 3422 | #endif | |||
| 3423 | int | |||
| 3424 | sys_fsync(struct thread *td, struct fsync_args *uap) | |||
| 3425 | { | |||
| 3426 | ||||
| 3427 | return (kern_fsync(td, uap->fd, true1)); | |||
| 3428 | } | |||
| 3429 | ||||
| 3430 | int | |||
| 3431 | sys_fdatasync(struct thread *td, struct fdatasync_args *uap) | |||
| 3432 | { | |||
| 3433 | ||||
| 3434 | return (kern_fsync(td, uap->fd, false0)); | |||
| 3435 | } | |||
| 3436 | ||||
| 3437 | /* | |||
| 3438 | * Rename files. Source and destination must either both be directories, or | |||
| 3439 | * both not be directories. If target is a directory, it must be empty. | |||
| 3440 | */ | |||
| 3441 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3442 | struct rename_args { | |||
| 3443 | char *from; | |||
| 3444 | char *to; | |||
| 3445 | }; | |||
| 3446 | #endif | |||
| 3447 | int | |||
| 3448 | sys_rename(struct thread *td, struct rename_args *uap) | |||
| 3449 | { | |||
| 3450 | ||||
| 3451 | return (kern_renameat(td, AT_FDCWD-100, uap->from, AT_FDCWD-100, | |||
| 3452 | uap->to, UIO_USERSPACE)); | |||
| 3453 | } | |||
| 3454 | ||||
| 3455 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3456 | struct renameat_args { | |||
| 3457 | int oldfd; | |||
| 3458 | char *old; | |||
| 3459 | int newfd; | |||
| 3460 | char *new; | |||
| 3461 | }; | |||
| 3462 | #endif | |||
| 3463 | int | |||
| 3464 | sys_renameat(struct thread *td, struct renameat_args *uap) | |||
| 3465 | { | |||
| 3466 | ||||
| 3467 | return (kern_renameat(td, uap->oldfd, uap->old, uap->newfd, uap->new, | |||
| 3468 | UIO_USERSPACE)); | |||
| 3469 | } | |||
| 3470 | ||||
| 3471 | int | |||
| 3472 | kern_renameat(struct thread *td, int oldfd, const char *old, int newfd, | |||
| 3473 | const char *new, enum uio_seg pathseg) | |||
| 3474 | { | |||
| 3475 | struct mount *mp = NULL((void *)0); | |||
| 3476 | struct vnode *tvp, *fvp, *tdvp; | |||
| 3477 | struct nameidata fromnd, tond; | |||
| 3478 | int error; | |||
| 3479 | ||||
| 3480 | again: | |||
| 3481 | bwillwrite(); | |||
| 3482 | #ifdef MAC1 | |||
| 3483 | NDINIT_ATRIGHTS(&fromnd, DELETE, LOCKPARENT | LOCKLEAF | SAVESTART |NDINIT_ALL(&fromnd, 2, 0x0008 | 0x0004 | 0x00001000 | 0x04000000 , pathseg, old, oldfd, ((void *)0), &cap_renameat_source_rights , td) | |||
| 3484 | AUDITVNODE1, pathseg, old, oldfd,NDINIT_ALL(&fromnd, 2, 0x0008 | 0x0004 | 0x00001000 | 0x04000000 , pathseg, old, oldfd, ((void *)0), &cap_renameat_source_rights , td) | |||
| 3485 | &cap_renameat_source_rights, td)NDINIT_ALL(&fromnd, 2, 0x0008 | 0x0004 | 0x00001000 | 0x04000000 , pathseg, old, oldfd, ((void *)0), &cap_renameat_source_rights , td); | |||
| 3486 | #else | |||
| 3487 | NDINIT_ATRIGHTS(&fromnd, DELETE, WANTPARENT | SAVESTART | AUDITVNODE1,NDINIT_ALL(&fromnd, 2, 0x0010 | 0x00001000 | 0x04000000, pathseg , old, oldfd, ((void *)0), &cap_renameat_source_rights, td ) | |||
| 3488 | pathseg, old, oldfd,NDINIT_ALL(&fromnd, 2, 0x0010 | 0x00001000 | 0x04000000, pathseg , old, oldfd, ((void *)0), &cap_renameat_source_rights, td ) | |||
| 3489 | &cap_renameat_source_rights, td)NDINIT_ALL(&fromnd, 2, 0x0010 | 0x00001000 | 0x04000000, pathseg , old, oldfd, ((void *)0), &cap_renameat_source_rights, td ); | |||
| 3490 | #endif | |||
| 3491 | ||||
| 3492 | if ((error = namei(&fromnd)) != 0) | |||
| 3493 | return (error); | |||
| 3494 | #ifdef MAC1 | |||
| 3495 | error = mac_vnode_check_rename_from(td->td_ucred, fromnd.ni_dvp, | |||
| 3496 | fromnd.ni_vp, &fromnd.ni_cnd); | |||
| 3497 | VOP_UNLOCK(fromnd.ni_dvp, 0); | |||
| 3498 | if (fromnd.ni_dvp != fromnd.ni_vp) | |||
| 3499 | VOP_UNLOCK(fromnd.ni_vp, 0); | |||
| 3500 | #endif | |||
| 3501 | fvp = fromnd.ni_vp; | |||
| 3502 | NDINIT_ATRIGHTS(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE |NDINIT_ALL(&tond, 3, 0x0008 | 0x0004 | 0x0020 | 0x00001000 | 0x08000000, pathseg, new, newfd, ((void *)0), &cap_renameat_target_rights , td) | |||
| 3503 | SAVESTART | AUDITVNODE2, pathseg, new, newfd,NDINIT_ALL(&tond, 3, 0x0008 | 0x0004 | 0x0020 | 0x00001000 | 0x08000000, pathseg, new, newfd, ((void *)0), &cap_renameat_target_rights , td) | |||
| 3504 | &cap_renameat_target_rights, td)NDINIT_ALL(&tond, 3, 0x0008 | 0x0004 | 0x0020 | 0x00001000 | 0x08000000, pathseg, new, newfd, ((void *)0), &cap_renameat_target_rights , td); | |||
| 3505 | if (fromnd.ni_vp->v_type == VDIR) | |||
| 3506 | tond.ni_cnd.cn_flags |= WILLBEDIR0x00080000; | |||
| 3507 | if ((error = namei(&tond)) != 0) { | |||
| 3508 | /* Translate error code for rename("dir1", "dir2/."). */ | |||
| 3509 | if (error == EISDIR21 && fvp->v_type == VDIR) | |||
| 3510 | error = EINVAL22; | |||
| 3511 | NDFREE(&fromnd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3512 | vrele(fromnd.ni_dvp); | |||
| 3513 | vrele(fvp); | |||
| 3514 | goto out1; | |||
| 3515 | } | |||
| 3516 | tdvp = tond.ni_dvp; | |||
| 3517 | tvp = tond.ni_vp; | |||
| 3518 | error = vn_start_write(fvp, &mp, V_NOWAIT0x0002); | |||
| 3519 | if (error != 0) { | |||
| 3520 | NDFREE(&fromnd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3521 | NDFREE(&tond, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3522 | if (tvp != NULL((void *)0)) | |||
| 3523 | vput(tvp); | |||
| 3524 | if (tdvp == tvp) | |||
| 3525 | vrele(tdvp); | |||
| 3526 | else | |||
| 3527 | vput(tdvp); | |||
| 3528 | vrele(fromnd.ni_dvp); | |||
| 3529 | vrele(fvp); | |||
| 3530 | vrele(tond.ni_startdir); | |||
| 3531 | if (fromnd.ni_startdir != NULL((void *)0)) | |||
| 3532 | vrele(fromnd.ni_startdir); | |||
| 3533 | error = vn_start_write(NULL((void *)0), &mp, V_XSLEEP0x0004 | PCATCH0x100); | |||
| 3534 | if (error != 0) | |||
| 3535 | return (error); | |||
| 3536 | goto again; | |||
| 3537 | } | |||
| 3538 | if (tvp != NULL((void *)0)) { | |||
| 3539 | if (fvp->v_type == VDIR && tvp->v_type != VDIR) { | |||
| 3540 | error = ENOTDIR20; | |||
| 3541 | goto out; | |||
| 3542 | } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { | |||
| 3543 | error = EISDIR21; | |||
| 3544 | goto out; | |||
| 3545 | } | |||
| 3546 | #ifdef CAPABILITIES1 | |||
| 3547 | if (newfd != AT_FDCWD-100) { | |||
| 3548 | /* | |||
| 3549 | * If the target already exists we require CAP_UNLINKAT | |||
| 3550 | * from 'newfd'. | |||
| 3551 | */ | |||
| 3552 | error = cap_check(&tond.ni_filecaps.fc_rights, | |||
| 3553 | &cap_unlinkat_rights); | |||
| 3554 | if (error != 0) | |||
| 3555 | goto out; | |||
| 3556 | } | |||
| 3557 | #endif | |||
| 3558 | } | |||
| 3559 | if (fvp == tdvp) { | |||
| 3560 | error = EINVAL22; | |||
| 3561 | goto out; | |||
| 3562 | } | |||
| 3563 | /* | |||
| 3564 | * If the source is the same as the destination (that is, if they | |||
| 3565 | * are links to the same vnode), then there is nothing to do. | |||
| 3566 | */ | |||
| 3567 | if (fvp == tvp) | |||
| 3568 | error = -1; | |||
| 3569 | #ifdef MAC1 | |||
| 3570 | else | |||
| 3571 | error = mac_vnode_check_rename_to(td->td_ucred, tdvp, | |||
| 3572 | tond.ni_vp, fromnd.ni_dvp == tdvp, &tond.ni_cnd); | |||
| 3573 | #endif | |||
| 3574 | out: | |||
| 3575 | if (error == 0) { | |||
| 3576 | error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, | |||
| 3577 | tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); | |||
| 3578 | NDFREE(&fromnd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3579 | NDFREE(&tond, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3580 | } else { | |||
| 3581 | NDFREE(&fromnd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3582 | NDFREE(&tond, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3583 | if (tvp != NULL((void *)0)) | |||
| 3584 | vput(tvp); | |||
| 3585 | if (tdvp == tvp) | |||
| 3586 | vrele(tdvp); | |||
| 3587 | else | |||
| 3588 | vput(tdvp); | |||
| 3589 | vrele(fromnd.ni_dvp); | |||
| 3590 | vrele(fvp); | |||
| 3591 | } | |||
| 3592 | vrele(tond.ni_startdir); | |||
| 3593 | vn_finished_write(mp); | |||
| 3594 | out1: | |||
| 3595 | if (fromnd.ni_startdir) | |||
| 3596 | vrele(fromnd.ni_startdir); | |||
| 3597 | if (error == -1) | |||
| 3598 | return (0); | |||
| 3599 | return (error); | |||
| 3600 | } | |||
| 3601 | ||||
| 3602 | /* | |||
| 3603 | * Make a directory file. | |||
| 3604 | */ | |||
| 3605 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3606 | struct mkdir_args { | |||
| 3607 | char *path; | |||
| 3608 | int mode; | |||
| 3609 | }; | |||
| 3610 | #endif | |||
| 3611 | int | |||
| 3612 | sys_mkdir(struct thread *td, struct mkdir_args *uap) | |||
| 3613 | { | |||
| 3614 | ||||
| 3615 | return (kern_mkdirat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, | |||
| 3616 | uap->mode)); | |||
| 3617 | } | |||
| 3618 | ||||
| 3619 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3620 | struct mkdirat_args { | |||
| 3621 | int fd; | |||
| 3622 | char *path; | |||
| 3623 | mode_t mode; | |||
| 3624 | }; | |||
| 3625 | #endif | |||
| 3626 | int | |||
| 3627 | sys_mkdirat(struct thread *td, struct mkdirat_args *uap) | |||
| 3628 | { | |||
| 3629 | ||||
| 3630 | return (kern_mkdirat(td, uap->fd, uap->path, UIO_USERSPACE, uap->mode)); | |||
| 3631 | } | |||
| 3632 | ||||
| 3633 | int | |||
| 3634 | kern_mkdirat(struct thread *td, int fd, const char *path, enum uio_seg segflg, | |||
| 3635 | int mode) | |||
| 3636 | { | |||
| 3637 | struct mount *mp; | |||
| 3638 | struct vnode *vp; | |||
| 3639 | struct vattr vattr; | |||
| 3640 | struct nameidata nd; | |||
| 3641 | int error; | |||
| 3642 | ||||
| 3643 | AUDIT_ARG_MODE(mode)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_mode((mode)); } while (0); | |||
| 3644 | restart: | |||
| 3645 | bwillwrite(); | |||
| 3646 | NDINIT_ATRIGHTS(&nd, CREATE, LOCKPARENT | SAVENAME | AUDITVNODE1 |NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , segflg, path, fd, ((void *)0), &cap_mkdirat_rights, td) | |||
| 3647 | NOCACHE, segflg, path, fd, &cap_mkdirat_rights,NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , segflg, path, fd, ((void *)0), &cap_mkdirat_rights, td) | |||
| 3648 | td)NDINIT_ALL(&nd, 1, 0x0008 | 0x00000800 | 0x04000000 | 0x0020 , segflg, path, fd, ((void *)0), &cap_mkdirat_rights, td); | |||
| 3649 | nd.ni_cnd.cn_flags |= WILLBEDIR0x00080000; | |||
| 3650 | if ((error = namei(&nd)) != 0) | |||
| 3651 | return (error); | |||
| 3652 | vp = nd.ni_vp; | |||
| 3653 | if (vp != NULL((void *)0)) { | |||
| 3654 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3655 | /* | |||
| 3656 | * XXX namei called with LOCKPARENT but not LOCKLEAF has | |||
| 3657 | * the strange behaviour of leaving the vnode unlocked | |||
| 3658 | * if the target is the same vnode as the parent. | |||
| 3659 | */ | |||
| 3660 | if (vp == nd.ni_dvp) | |||
| 3661 | vrele(nd.ni_dvp); | |||
| 3662 | else | |||
| 3663 | vput(nd.ni_dvp); | |||
| 3664 | vrele(vp); | |||
| 3665 | return (EEXIST17); | |||
| 3666 | } | |||
| 3667 | if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT0x0002) != 0) { | |||
| 3668 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3669 | vput(nd.ni_dvp); | |||
| 3670 | if ((error = vn_start_write(NULL((void *)0), &mp, V_XSLEEP0x0004 | PCATCH0x100)) != 0) | |||
| 3671 | return (error); | |||
| 3672 | goto restart; | |||
| 3673 | } | |||
| 3674 | VATTR_NULL(&vattr)(*(&vattr) = va_null); | |||
| 3675 | vattr.va_type = VDIR; | |||
| 3676 | vattr.va_mode = (mode & ACCESSPERMS(0000700|0000070|0000007)) &~ td->td_proc->p_fd->fd_cmask; | |||
| 3677 | #ifdef MAC1 | |||
| 3678 | error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd, | |||
| 3679 | &vattr); | |||
| 3680 | if (error != 0) | |||
| 3681 | goto out; | |||
| 3682 | #endif | |||
| 3683 | error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); | |||
| 3684 | #ifdef MAC1 | |||
| 3685 | out: | |||
| 3686 | #endif | |||
| 3687 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3688 | vput(nd.ni_dvp); | |||
| 3689 | if (error == 0) | |||
| 3690 | vput(nd.ni_vp); | |||
| 3691 | vn_finished_write(mp); | |||
| 3692 | return (error); | |||
| 3693 | } | |||
| 3694 | ||||
| 3695 | /* | |||
| 3696 | * Remove a directory file. | |||
| 3697 | */ | |||
| 3698 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3699 | struct rmdir_args { | |||
| 3700 | char *path; | |||
| 3701 | }; | |||
| 3702 | #endif | |||
| 3703 | int | |||
| 3704 | sys_rmdir(struct thread *td, struct rmdir_args *uap) | |||
| 3705 | { | |||
| 3706 | ||||
| 3707 | return (kern_rmdirat(td, AT_FDCWD-100, uap->path, UIO_USERSPACE, 0)); | |||
| 3708 | } | |||
| 3709 | ||||
| 3710 | int | |||
| 3711 | kern_rmdirat(struct thread *td, int fd, const char *path, enum uio_seg pathseg, | |||
| 3712 | int flag) | |||
| 3713 | { | |||
| 3714 | struct mount *mp; | |||
| 3715 | struct vnode *vp; | |||
| 3716 | struct nameidata nd; | |||
| 3717 | int error; | |||
| 3718 | ||||
| 3719 | restart: | |||
| 3720 | bwillwrite(); | |||
| 3721 | NDINIT_ATRIGHTS(&nd, DELETE, LOCKPARENT | LOCKLEAF | AUDITVNODE1 |NDINIT_ALL(&nd, 2, 0x0008 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ((void *)0), & cap_unlinkat_rights, td) | |||
| 3722 | ((flag & AT_BENEATH) != 0 ? BENEATH : 0),NDINIT_ALL(&nd, 2, 0x0008 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ((void *)0), & cap_unlinkat_rights, td) | |||
| 3723 | pathseg, path, fd, &cap_unlinkat_rights, td)NDINIT_ALL(&nd, 2, 0x0008 | 0x0004 | 0x04000000 | ((flag & 0x1000) != 0 ? 0x0080 : 0), pathseg, path, fd, ((void *)0), & cap_unlinkat_rights, td); | |||
| 3724 | if ((error = namei(&nd)) != 0) | |||
| 3725 | return (error); | |||
| 3726 | vp = nd.ni_vp; | |||
| 3727 | if (vp->v_type != VDIR) { | |||
| 3728 | error = ENOTDIR20; | |||
| 3729 | goto out; | |||
| 3730 | } | |||
| 3731 | /* | |||
| 3732 | * No rmdir "." please. | |||
| 3733 | */ | |||
| 3734 | if (nd.ni_dvp == vp) { | |||
| 3735 | error = EINVAL22; | |||
| 3736 | goto out; | |||
| 3737 | } | |||
| 3738 | /* | |||
| 3739 | * The root of a mounted filesystem cannot be deleted. | |||
| 3740 | */ | |||
| 3741 | if (vp->v_vflag & VV_ROOT0x0001) { | |||
| 3742 | error = EBUSY16; | |||
| 3743 | goto out; | |||
| 3744 | } | |||
| 3745 | #ifdef MAC1 | |||
| 3746 | error = mac_vnode_check_unlink(td->td_ucred, nd.ni_dvp, vp, | |||
| 3747 | &nd.ni_cnd); | |||
| 3748 | if (error != 0) | |||
| 3749 | goto out; | |||
| 3750 | #endif | |||
| 3751 | if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT0x0002) != 0) { | |||
| 3752 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3753 | vput(vp); | |||
| 3754 | if (nd.ni_dvp == vp) | |||
| 3755 | vrele(nd.ni_dvp); | |||
| 3756 | else | |||
| 3757 | vput(nd.ni_dvp); | |||
| 3758 | if ((error = vn_start_write(NULL((void *)0), &mp, V_XSLEEP0x0004 | PCATCH0x100)) != 0) | |||
| 3759 | return (error); | |||
| 3760 | goto restart; | |||
| 3761 | } | |||
| 3762 | vfs_notify_upper(vp, VFS_NOTIFY_UPPER_UNLINK2); | |||
| 3763 | error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); | |||
| 3764 | vn_finished_write(mp); | |||
| 3765 | out: | |||
| 3766 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 3767 | vput(vp); | |||
| 3768 | if (nd.ni_dvp == vp) | |||
| 3769 | vrele(nd.ni_dvp); | |||
| 3770 | else | |||
| 3771 | vput(nd.ni_dvp); | |||
| 3772 | return (error); | |||
| 3773 | } | |||
| 3774 | ||||
| 3775 | #if defined(COMPAT_43) || defined(COMPAT_FREEBSD111) | |||
| 3776 | int | |||
| 3777 | freebsd11_kern_getdirentries(struct thread *td, int fd, char *ubuf, u_int count, | |||
| 3778 | long *basep, void (*func)(struct freebsd11_dirent *)) | |||
| 3779 | { | |||
| 3780 | struct freebsd11_dirent dstdp; | |||
| 3781 | struct dirent *dp, *edp; | |||
| 3782 | char *dirbuf; | |||
| 3783 | off_t base; | |||
| 3784 | ssize_t resid, ucount; | |||
| 3785 | int error; | |||
| 3786 | ||||
| 3787 | /* XXX arbitrary sanity limit on `count'. */ | |||
| 3788 | count = min(count, 64 * 1024); | |||
| 3789 | ||||
| 3790 | dirbuf = malloc(count, M_TEMP, M_WAITOK0x0002); | |||
| 3791 | ||||
| 3792 | error = kern_getdirentries(td, fd, dirbuf, count, &base, &resid, | |||
| 3793 | UIO_SYSSPACE); | |||
| 3794 | if (error != 0) | |||
| 3795 | goto done; | |||
| 3796 | if (basep != NULL((void *)0)) | |||
| 3797 | *basep = base; | |||
| 3798 | ||||
| 3799 | ucount = 0; | |||
| 3800 | for (dp = (struct dirent *)dirbuf, | |||
| 3801 | edp = (struct dirent *)&dirbuf[count - resid]; | |||
| 3802 | ucount < count && dp < edp; ) { | |||
| 3803 | if (dp->d_reclen == 0) | |||
| 3804 | break; | |||
| 3805 | MPASS(dp->d_reclen >= _GENERIC_DIRLEN(0))do { if (__builtin_expect((!((dp->d_reclen >= ((__builtin_offsetof (struct dirent, d_name) + (0) + 1 + 7) & ~7)))), 0)) panic ("Assertion %s failed at %s:%d", "dp->d_reclen >= _GENERIC_DIRLEN(0)" , "/root/freebsd/sys/kern/vfs_syscalls.c", 3805); } while (0); | |||
| 3806 | if (dp->d_namlen >= sizeof(dstdp.d_name)) | |||
| 3807 | continue; | |||
| 3808 | dstdp.d_type = dp->d_type; | |||
| 3809 | dstdp.d_namlen = dp->d_namlen; | |||
| 3810 | dstdp.d_fileno = dp->d_fileno; /* truncate */ | |||
| 3811 | if (dstdp.d_fileno != dp->d_fileno) { | |||
| 3812 | switch (ino64_trunc_error) { | |||
| 3813 | default: | |||
| 3814 | case 0: | |||
| 3815 | break; | |||
| 3816 | case 1: | |||
| 3817 | error = EOVERFLOW84; | |||
| 3818 | goto done; | |||
| 3819 | case 2: | |||
| 3820 | dstdp.d_fileno = UINT32_MAX0xffffffffU; | |||
| 3821 | break; | |||
| 3822 | } | |||
| 3823 | } | |||
| 3824 | dstdp.d_reclen = sizeof(dstdp) - sizeof(dstdp.d_name) + | |||
| 3825 | ((dp->d_namlen + 1 + 3) &~ 3); | |||
| 3826 | bcopy(dp->d_name, dstdp.d_name, dstdp.d_namlen)__builtin_memmove((dstdp.d_name), (dp->d_name), (dstdp.d_namlen )); | |||
| 3827 | bzero(dstdp.d_name + dstdp.d_namlen,__builtin_memset((dstdp.d_name + dstdp.d_namlen), 0, (dstdp.d_reclen - __builtin_offsetof(struct freebsd11_dirent, d_name) - dstdp .d_namlen)) | |||
| 3828 | dstdp.d_reclen - offsetof(struct freebsd11_dirent, d_name) -__builtin_memset((dstdp.d_name + dstdp.d_namlen), 0, (dstdp.d_reclen - __builtin_offsetof(struct freebsd11_dirent, d_name) - dstdp .d_namlen)) | |||
| 3829 | dstdp.d_namlen)__builtin_memset((dstdp.d_name + dstdp.d_namlen), 0, (dstdp.d_reclen - __builtin_offsetof(struct freebsd11_dirent, d_name) - dstdp .d_namlen)); | |||
| 3830 | MPASS(dstdp.d_reclen <= dp->d_reclen)do { if (__builtin_expect((!((dstdp.d_reclen <= dp->d_reclen ))), 0)) panic ("Assertion %s failed at %s:%d", "dstdp.d_reclen <= dp->d_reclen" , "/root/freebsd/sys/kern/vfs_syscalls.c", 3830); } while (0); | |||
| 3831 | MPASS(ucount + dstdp.d_reclen <= count)do { if (__builtin_expect((!((ucount + dstdp.d_reclen <= count ))), 0)) panic ("Assertion %s failed at %s:%d", "ucount + dstdp.d_reclen <= count" , "/root/freebsd/sys/kern/vfs_syscalls.c", 3831); } while (0); | |||
| 3832 | if (func != NULL((void *)0)) | |||
| 3833 | func(&dstdp); | |||
| 3834 | error = copyout(&dstdp, ubuf + ucount, dstdp.d_reclen); | |||
| 3835 | if (error != 0) | |||
| 3836 | break; | |||
| 3837 | dp = (struct dirent *)((char *)dp + dp->d_reclen); | |||
| 3838 | ucount += dstdp.d_reclen; | |||
| 3839 | } | |||
| 3840 | ||||
| 3841 | done: | |||
| 3842 | free(dirbuf, M_TEMP); | |||
| 3843 | if (error == 0) | |||
| 3844 | td->td_retvaltd_uretoff.tdu_retval[0] = ucount; | |||
| 3845 | return (error); | |||
| 3846 | } | |||
| 3847 | #endif /* COMPAT */ | |||
| 3848 | ||||
| 3849 | #ifdef COMPAT_43 | |||
| 3850 | static void | |||
| 3851 | ogetdirentries_cvt(struct freebsd11_dirent *dp) | |||
| 3852 | { | |||
| 3853 | #if (BYTE_ORDER1234 == LITTLE_ENDIAN1234) | |||
| 3854 | /* | |||
| 3855 | * The expected low byte of dp->d_namlen is our dp->d_type. | |||
| 3856 | * The high MBZ byte of dp->d_namlen is our dp->d_namlen. | |||
| 3857 | */ | |||
| 3858 | dp->d_type = dp->d_namlen; | |||
| 3859 | dp->d_namlen = 0; | |||
| 3860 | #else | |||
| 3861 | /* | |||
| 3862 | * The dp->d_type is the high byte of the expected dp->d_namlen, | |||
| 3863 | * so must be zero'ed. | |||
| 3864 | */ | |||
| 3865 | dp->d_type = 0; | |||
| 3866 | #endif | |||
| 3867 | } | |||
| 3868 | ||||
| 3869 | /* | |||
| 3870 | * Read a block of directory entries in a filesystem independent format. | |||
| 3871 | */ | |||
| 3872 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3873 | struct ogetdirentries_args { | |||
| 3874 | int fd; | |||
| 3875 | char *buf; | |||
| 3876 | u_int count; | |||
| 3877 | long *basep; | |||
| 3878 | }; | |||
| 3879 | #endif | |||
| 3880 | int | |||
| 3881 | ogetdirentries(struct thread *td, struct ogetdirentries_args *uap) | |||
| 3882 | { | |||
| 3883 | long loff; | |||
| 3884 | int error; | |||
| 3885 | ||||
| 3886 | error = kern_ogetdirentries(td, uap, &loff); | |||
| 3887 | if (error == 0) | |||
| 3888 | error = copyout(&loff, uap->basep, sizeof(long)); | |||
| 3889 | return (error); | |||
| 3890 | } | |||
| 3891 | ||||
| 3892 | int | |||
| 3893 | kern_ogetdirentries(struct thread *td, struct ogetdirentries_args *uap, | |||
| 3894 | long *ploff) | |||
| 3895 | { | |||
| 3896 | long base; | |||
| 3897 | int error; | |||
| 3898 | ||||
| 3899 | /* XXX arbitrary sanity limit on `count'. */ | |||
| 3900 | if (uap->count > 64 * 1024) | |||
| 3901 | return (EINVAL22); | |||
| 3902 | ||||
| 3903 | error = freebsd11_kern_getdirentries(td, uap->fd, uap->buf, uap->count, | |||
| 3904 | &base, ogetdirentries_cvt); | |||
| 3905 | ||||
| 3906 | if (error == 0 && uap->basep != NULL((void *)0)) | |||
| 3907 | error = copyout(&base, uap->basep, sizeof(long)); | |||
| 3908 | ||||
| 3909 | return (error); | |||
| 3910 | } | |||
| 3911 | #endif /* COMPAT_43 */ | |||
| 3912 | ||||
| 3913 | #if defined(COMPAT_FREEBSD111) | |||
| 3914 | #ifndef _SYS_SYSPROTO_H_ | |||
| 3915 | struct freebsd11_getdirentries_args { | |||
| 3916 | int fd; | |||
| 3917 | char *buf; | |||
| 3918 | u_int count; | |||
| 3919 | long *basep; | |||
| 3920 | }; | |||
| 3921 | #endif | |||
| 3922 | int | |||
| 3923 | freebsd11_getdirentries(struct thread *td, | |||
| 3924 | struct freebsd11_getdirentries_args *uap) | |||
| 3925 | { | |||
| 3926 | long base; | |||
| 3927 | int error; | |||
| 3928 | ||||
| 3929 | error = freebsd11_kern_getdirentries(td, uap->fd, uap->buf, uap->count, | |||
| 3930 | &base, NULL((void *)0)); | |||
| 3931 | ||||
| 3932 | if (error == 0 && uap->basep != NULL((void *)0)) | |||
| 3933 | error = copyout(&base, uap->basep, sizeof(long)); | |||
| 3934 | return (error); | |||
| 3935 | } | |||
| 3936 | ||||
| 3937 | int | |||
| 3938 | freebsd11_getdents(struct thread *td, struct freebsd11_getdents_args *uap) | |||
| 3939 | { | |||
| 3940 | struct freebsd11_getdirentries_args ap; | |||
| 3941 | ||||
| 3942 | ap.fd = uap->fd; | |||
| 3943 | ap.buf = uap->buf; | |||
| 3944 | ap.count = uap->count; | |||
| 3945 | ap.basep = NULL((void *)0); | |||
| 3946 | return (freebsd11_getdirentries(td, &ap)); | |||
| 3947 | } | |||
| 3948 | #endif /* COMPAT_FREEBSD11 */ | |||
| 3949 | ||||
| 3950 | /* | |||
| 3951 | * Read a block of directory entries in a filesystem independent format. | |||
| 3952 | */ | |||
| 3953 | int | |||
| 3954 | sys_getdirentries(struct thread *td, struct getdirentries_args *uap) | |||
| 3955 | { | |||
| 3956 | off_t base; | |||
| 3957 | int error; | |||
| 3958 | ||||
| 3959 | error = kern_getdirentries(td, uap->fd, uap->buf, uap->count, &base, | |||
| 3960 | NULL((void *)0), UIO_USERSPACE); | |||
| 3961 | if (error != 0) | |||
| 3962 | return (error); | |||
| 3963 | if (uap->basep != NULL((void *)0)) | |||
| 3964 | error = copyout(&base, uap->basep, sizeof(off_t)); | |||
| 3965 | return (error); | |||
| 3966 | } | |||
| 3967 | ||||
| 3968 | int | |||
| 3969 | kern_getdirentries(struct thread *td, int fd, char *buf, size_t count, | |||
| 3970 | off_t *basep, ssize_t *residp, enum uio_seg bufseg) | |||
| 3971 | { | |||
| 3972 | struct vnode *vp; | |||
| 3973 | struct file *fp; | |||
| 3974 | struct uio auio; | |||
| 3975 | struct iovec aiov; | |||
| 3976 | off_t loff; | |||
| 3977 | int error, eofflag; | |||
| 3978 | off_t foffset; | |||
| 3979 | ||||
| 3980 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 3981 | if (count > IOSIZE_MAXiosize_max()) | |||
| 3982 | return (EINVAL22); | |||
| 3983 | auio.uio_resid = count; | |||
| 3984 | error = getvnode(td, fd, &cap_read_rights, &fp); | |||
| 3985 | if (error != 0) | |||
| 3986 | return (error); | |||
| 3987 | if ((fp->f_flag & FREAD0x0001) == 0) { | |||
| 3988 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 3989 | return (EBADF9); | |||
| 3990 | } | |||
| 3991 | vp = fp->f_vnode; | |||
| 3992 | foffset = foffset_lock(fp, 0); | |||
| 3993 | unionread: | |||
| 3994 | if (vp->v_type != VDIR) { | |||
| 3995 | error = EINVAL22; | |||
| 3996 | goto fail; | |||
| 3997 | } | |||
| 3998 | aiov.iov_base = buf; | |||
| 3999 | aiov.iov_len = count; | |||
| 4000 | auio.uio_iov = &aiov; | |||
| 4001 | auio.uio_iovcnt = 1; | |||
| 4002 | auio.uio_rw = UIO_READ; | |||
| 4003 | auio.uio_segflg = bufseg; | |||
| 4004 | auio.uio_td = td; | |||
| 4005 | vn_lock(vp, LK_SHARED | LK_RETRY)_vn_lock(vp, 0x200000 | 0x000400, "/root/freebsd/sys/kern/vfs_syscalls.c" , 4005); | |||
| 4006 | AUDIT_ARG_VNODE1(vp)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((vp)); } while (0); | |||
| 4007 | loff = auio.uio_offset = foffset; | |||
| 4008 | #ifdef MAC1 | |||
| 4009 | error = mac_vnode_check_readdir(td->td_ucred, vp); | |||
| 4010 | if (error == 0) | |||
| 4011 | #endif | |||
| 4012 | error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, NULL((void *)0), | |||
| 4013 | NULL((void *)0)); | |||
| 4014 | foffset = auio.uio_offset; | |||
| 4015 | if (error != 0) { | |||
| 4016 | VOP_UNLOCK(vp, 0); | |||
| 4017 | goto fail; | |||
| 4018 | } | |||
| 4019 | if (count == auio.uio_resid && | |||
| 4020 | (vp->v_vflag & VV_ROOT0x0001) && | |||
| 4021 | (vp->v_mount->mnt_flag & MNT_UNION0x0000000000000020ULL)) { | |||
| 4022 | struct vnode *tvp = vp; | |||
| 4023 | ||||
| 4024 | vp = vp->v_mount->mnt_vnodecovered; | |||
| 4025 | VREF(vp)vref(vp); | |||
| 4026 | fp->f_vnode = vp; | |||
| 4027 | fp->f_data = vp; | |||
| 4028 | foffset = 0; | |||
| 4029 | vput(tvp); | |||
| 4030 | goto unionread; | |||
| 4031 | } | |||
| 4032 | VOP_UNLOCK(vp, 0); | |||
| 4033 | *basep = loff; | |||
| 4034 | if (residp != NULL((void *)0)) | |||
| 4035 | *residp = auio.uio_resid; | |||
| 4036 | td->td_retvaltd_uretoff.tdu_retval[0] = count - auio.uio_resid; | |||
| 4037 | fail: | |||
| 4038 | foffset_unlock(fp, foffset, 0); | |||
| 4039 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 4040 | return (error); | |||
| 4041 | } | |||
| 4042 | ||||
| 4043 | /* | |||
| 4044 | * Set the mode mask for creation of filesystem nodes. | |||
| 4045 | */ | |||
| 4046 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4047 | struct umask_args { | |||
| 4048 | int newmask; | |||
| 4049 | }; | |||
| 4050 | #endif | |||
| 4051 | int | |||
| 4052 | sys_umask(struct thread *td, struct umask_args *uap) | |||
| 4053 | { | |||
| 4054 | struct filedesc *fdp; | |||
| 4055 | ||||
| 4056 | fdp = td->td_proc->p_fd; | |||
| 4057 | FILEDESC_XLOCK(fdp)(void)_sx_xlock(((&(fdp)->fd_sx)), 0, ("/root/freebsd/sys/kern/vfs_syscalls.c" ), (4057)); | |||
| 4058 | td->td_retvaltd_uretoff.tdu_retval[0] = fdp->fd_cmask; | |||
| 4059 | fdp->fd_cmask = uap->newmask & ALLPERMS(0004000|0002000|0001000|0000700|0000070|0000007); | |||
| 4060 | FILEDESC_XUNLOCK(fdp)_sx_xunlock(((&(fdp)->fd_sx)), ("/root/freebsd/sys/kern/vfs_syscalls.c" ), (4060)); | |||
| 4061 | return (0); | |||
| 4062 | } | |||
| 4063 | ||||
| 4064 | /* | |||
| 4065 | * Void all references to file by ripping underlying filesystem away from | |||
| 4066 | * vnode. | |||
| 4067 | */ | |||
| 4068 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4069 | struct revoke_args { | |||
| 4070 | char *path; | |||
| 4071 | }; | |||
| 4072 | #endif | |||
| 4073 | int | |||
| 4074 | sys_revoke(struct thread *td, struct revoke_args *uap) | |||
| 4075 | { | |||
| 4076 | struct vnode *vp; | |||
| 4077 | struct vattr vattr; | |||
| 4078 | struct nameidata nd; | |||
| 4079 | int error; | |||
| 4080 | ||||
| 4081 | NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1, UIO_USERSPACE,NDINIT_ALL(&nd, 0, 0x0040 | 0x0004 | 0x04000000, UIO_USERSPACE , uap->path, -100, ((void *)0), 0, td) | |||
| 4082 | uap->path, td)NDINIT_ALL(&nd, 0, 0x0040 | 0x0004 | 0x04000000, UIO_USERSPACE , uap->path, -100, ((void *)0), 0, td); | |||
| 4083 | if ((error = namei(&nd)) != 0) | |||
| 4084 | return (error); | |||
| 4085 | vp = nd.ni_vp; | |||
| 4086 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 4087 | if (vp->v_type != VCHR || vp->v_rdev == NULL((void *)0)) { | |||
| 4088 | error = EINVAL22; | |||
| 4089 | goto out; | |||
| 4090 | } | |||
| 4091 | #ifdef MAC1 | |||
| 4092 | error = mac_vnode_check_revoke(td->td_ucred, vp); | |||
| 4093 | if (error != 0) | |||
| 4094 | goto out; | |||
| 4095 | #endif | |||
| 4096 | error = VOP_GETATTR(vp, &vattr, td->td_ucred); | |||
| 4097 | if (error != 0) | |||
| 4098 | goto out; | |||
| 4099 | if (td->td_ucred->cr_uid != vattr.va_uid) { | |||
| 4100 | error = priv_check(td, PRIV_VFS_ADMIN312); | |||
| 4101 | if (error != 0) | |||
| 4102 | goto out; | |||
| 4103 | } | |||
| 4104 | if (vcount(vp) > 1) | |||
| 4105 | VOP_REVOKE(vp, REVOKEALL0x0001); | |||
| 4106 | out: | |||
| 4107 | vput(vp); | |||
| 4108 | return (error); | |||
| 4109 | } | |||
| 4110 | ||||
| 4111 | /* | |||
| 4112 | * Convert a user file descriptor to a kernel file entry and check that, if it | |||
| 4113 | * is a capability, the correct rights are present. A reference on the file | |||
| 4114 | * entry is held upon returning. | |||
| 4115 | */ | |||
| 4116 | int | |||
| 4117 | getvnode(struct thread *td, int fd, cap_rights_t *rightsp, struct file **fpp) | |||
| 4118 | { | |||
| 4119 | struct file *fp; | |||
| 4120 | int error; | |||
| 4121 | ||||
| 4122 | error = fget_unlocked(td->td_proc->p_fd, fd, rightsp, &fp, NULL((void *)0)); | |||
| 4123 | if (error != 0) | |||
| 4124 | return (error); | |||
| 4125 | ||||
| 4126 | /* | |||
| 4127 | * The file could be not of the vnode type, or it may be not | |||
| 4128 | * yet fully initialized, in which case the f_vnode pointer | |||
| 4129 | * may be set, but f_ops is still badfileops. E.g., | |||
| 4130 | * devfs_open() transiently create such situation to | |||
| 4131 | * facilitate csw d_fdopen(). | |||
| 4132 | * | |||
| 4133 | * Dupfdopen() handling in kern_openat() installs the | |||
| 4134 | * half-baked file into the process descriptor table, allowing | |||
| 4135 | * other thread to dereference it. Guard against the race by | |||
| 4136 | * checking f_ops. | |||
| 4137 | */ | |||
| 4138 | if (fp->f_vnode == NULL((void *)0) || fp->f_ops == &badfileops) { | |||
| 4139 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 4140 | return (EINVAL22); | |||
| 4141 | } | |||
| 4142 | *fpp = fp; | |||
| 4143 | return (0); | |||
| 4144 | } | |||
| 4145 | ||||
| 4146 | ||||
| 4147 | /* | |||
| 4148 | * Get an (NFS) file handle. | |||
| 4149 | */ | |||
| 4150 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4151 | struct lgetfh_args { | |||
| 4152 | char *fname; | |||
| 4153 | fhandle_t *fhp; | |||
| 4154 | }; | |||
| 4155 | #endif | |||
| 4156 | int | |||
| 4157 | sys_lgetfh(struct thread *td, struct lgetfh_args *uap) | |||
| 4158 | { | |||
| 4159 | ||||
| 4160 | return (kern_getfhat(td, AT_SYMLINK_NOFOLLOW0x0200, AT_FDCWD-100, uap->fname, | |||
| 4161 | UIO_USERSPACE, uap->fhp)); | |||
| 4162 | } | |||
| 4163 | ||||
| 4164 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4165 | struct getfh_args { | |||
| 4166 | char *fname; | |||
| 4167 | fhandle_t *fhp; | |||
| 4168 | }; | |||
| 4169 | #endif | |||
| 4170 | int | |||
| 4171 | sys_getfh(struct thread *td, struct getfh_args *uap) | |||
| 4172 | { | |||
| 4173 | ||||
| 4174 | return (kern_getfhat(td, 0, AT_FDCWD-100, uap->fname, UIO_USERSPACE, | |||
| 4175 | uap->fhp)); | |||
| 4176 | } | |||
| 4177 | ||||
| 4178 | /* | |||
| 4179 | * syscall for the rpc.lockd to use to translate an open descriptor into | |||
| 4180 | * a NFS file handle. | |||
| 4181 | * | |||
| 4182 | * warning: do not remove the priv_check() call or this becomes one giant | |||
| 4183 | * security hole. | |||
| 4184 | */ | |||
| 4185 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4186 | struct getfhat_args { | |||
| 4187 | int fd; | |||
| 4188 | char *path; | |||
| 4189 | fhandle_t *fhp; | |||
| 4190 | int flags; | |||
| 4191 | }; | |||
| 4192 | #endif | |||
| 4193 | int | |||
| 4194 | sys_getfhat(struct thread *td, struct getfhat_args *uap) | |||
| 4195 | { | |||
| 4196 | ||||
| 4197 | if ((uap->flags & ~(AT_SYMLINK_NOFOLLOW0x0200 | AT_BENEATH0x1000)) != 0) | |||
| 4198 | return (EINVAL22); | |||
| 4199 | return (kern_getfhat(td, uap->flags, uap->fd, uap->path, UIO_USERSPACE, | |||
| 4200 | uap->fhp)); | |||
| 4201 | } | |||
| 4202 | ||||
| 4203 | static int | |||
| 4204 | kern_getfhat(struct thread *td, int flags, int fd, const char *path, | |||
| 4205 | enum uio_seg pathseg, fhandle_t *fhp) | |||
| 4206 | { | |||
| 4207 | struct nameidata nd; | |||
| 4208 | fhandle_t fh; | |||
| 4209 | struct vnode *vp; | |||
| 4210 | int error; | |||
| 4211 | ||||
| 4212 | error = priv_check(td, PRIV_VFS_GETFH327); | |||
| 4213 | if (error != 0) | |||
| 4214 | return (error); | |||
| 4215 | NDINIT_AT(&nd, LOOKUP, ((flags & AT_SYMLINK_NOFOLLOW) != 0 ? NOFOLLOW :NDINIT_ALL(&nd, 0, ((flags & 0x0200) != 0 ? 0x0000 : 0x0040 ) | ((flags & 0x1000) != 0 ? 0x0080 : 0) | 0x0004 | 0x04000000 , pathseg, path, fd, ((void *)0), 0, td) | |||
| 4216 | FOLLOW) | ((flags & AT_BENEATH) != 0 ? BENEATH : 0) | LOCKLEAF |NDINIT_ALL(&nd, 0, ((flags & 0x0200) != 0 ? 0x0000 : 0x0040 ) | ((flags & 0x1000) != 0 ? 0x0080 : 0) | 0x0004 | 0x04000000 , pathseg, path, fd, ((void *)0), 0, td) | |||
| 4217 | AUDITVNODE1, pathseg, path, fd, td)NDINIT_ALL(&nd, 0, ((flags & 0x0200) != 0 ? 0x0000 : 0x0040 ) | ((flags & 0x1000) != 0 ? 0x0080 : 0) | 0x0004 | 0x04000000 , pathseg, path, fd, ((void *)0), 0, td); | |||
| 4218 | error = namei(&nd); | |||
| 4219 | if (error != 0) | |||
| 4220 | return (error); | |||
| 4221 | NDFREE(&nd, NDF_ONLY_PNBUF(~0x00000020)); | |||
| 4222 | vp = nd.ni_vp; | |||
| 4223 | bzero(&fh, sizeof(fh))__builtin_memset((&fh), 0, (sizeof(fh))); | |||
| 4224 | fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid; | |||
| 4225 | error = VOP_VPTOFH(vp, &fh.fh_fid); | |||
| 4226 | vput(vp); | |||
| 4227 | if (error == 0) | |||
| 4228 | error = copyout(&fh, fhp, sizeof (fh)); | |||
| 4229 | return (error); | |||
| 4230 | } | |||
| 4231 | ||||
| 4232 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4233 | struct fhlink_args { | |||
| 4234 | fhandle_t *fhp; | |||
| 4235 | const char *to; | |||
| 4236 | }; | |||
| 4237 | #endif | |||
| 4238 | int | |||
| 4239 | sys_fhlink(struct thread *td, struct fhlink_args *uap) | |||
| 4240 | { | |||
| 4241 | ||||
| 4242 | return (kern_fhlinkat(td, AT_FDCWD-100, uap->to, UIO_USERSPACE, uap->fhp)); | |||
| 4243 | } | |||
| 4244 | ||||
| 4245 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4246 | struct fhlinkat_args { | |||
| 4247 | fhandle_t *fhp; | |||
| 4248 | int tofd; | |||
| 4249 | const char *to; | |||
| 4250 | }; | |||
| 4251 | #endif | |||
| 4252 | int | |||
| 4253 | sys_fhlinkat(struct thread *td, struct fhlinkat_args *uap) | |||
| 4254 | { | |||
| 4255 | ||||
| 4256 | return (kern_fhlinkat(td, uap->tofd, uap->to, UIO_USERSPACE, uap->fhp)); | |||
| 4257 | } | |||
| 4258 | ||||
| 4259 | static int | |||
| 4260 | kern_fhlinkat(struct thread *td, int fd, const char *path, | |||
| 4261 | enum uio_seg pathseg, fhandle_t *fhp) | |||
| 4262 | { | |||
| 4263 | fhandle_t fh; | |||
| 4264 | struct mount *mp; | |||
| 4265 | struct vnode *vp; | |||
| 4266 | int error; | |||
| 4267 | ||||
| 4268 | error = priv_check(td, PRIV_VFS_GETFH327); | |||
| 4269 | if (error != 0) | |||
| 4270 | return (error); | |||
| 4271 | error = copyin(fhp, &fh, sizeof(fh)); | |||
| 4272 | if (error != 0) | |||
| 4273 | return (error); | |||
| 4274 | do { | |||
| 4275 | bwillwrite(); | |||
| 4276 | if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL((void *)0)) | |||
| 4277 | return (ESTALE70); | |||
| 4278 | error = VFS_FHTOVP(mp, &fh.fh_fid, LK_SHARED, &vp)({ int _rc; _rc = (*(mp)->mnt_op->vfs_fhtovp)(mp, & fh.fh_fid, 0x200000, &vp); _rc; }); | |||
| 4279 | vfs_unbusy(mp); | |||
| 4280 | if (error != 0) | |||
| 4281 | return (error); | |||
| 4282 | VOP_UNLOCK(vp, 0); | |||
| 4283 | } while ((error = kern_linkat_vp(td, vp, fd, path, pathseg)) == EAGAIN35); | |||
| 4284 | return (error); | |||
| 4285 | } | |||
| 4286 | ||||
| 4287 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4288 | struct fhreadlink_args { | |||
| 4289 | fhandle_t *fhp; | |||
| 4290 | char *buf; | |||
| 4291 | size_t bufsize; | |||
| 4292 | }; | |||
| 4293 | #endif | |||
| 4294 | int | |||
| 4295 | sys_fhreadlink(struct thread *td, struct fhreadlink_args *uap) | |||
| 4296 | { | |||
| 4297 | fhandle_t fh; | |||
| 4298 | struct mount *mp; | |||
| 4299 | struct vnode *vp; | |||
| 4300 | int error; | |||
| 4301 | ||||
| 4302 | error = priv_check(td, PRIV_VFS_GETFH327); | |||
| 4303 | if (error != 0) | |||
| 4304 | return (error); | |||
| 4305 | if (uap->bufsize > IOSIZE_MAXiosize_max()) | |||
| 4306 | return (EINVAL22); | |||
| 4307 | error = copyin(uap->fhp, &fh, sizeof(fh)); | |||
| 4308 | if (error != 0) | |||
| 4309 | return (error); | |||
| 4310 | if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL((void *)0)) | |||
| 4311 | return (ESTALE70); | |||
| 4312 | error = VFS_FHTOVP(mp, &fh.fh_fid, LK_SHARED, &vp)({ int _rc; _rc = (*(mp)->mnt_op->vfs_fhtovp)(mp, & fh.fh_fid, 0x200000, &vp); _rc; }); | |||
| 4313 | vfs_unbusy(mp); | |||
| 4314 | if (error != 0) | |||
| 4315 | return (error); | |||
| 4316 | error = kern_readlink_vp(vp, uap->buf, UIO_USERSPACE, uap->bufsize, td); | |||
| 4317 | vput(vp); | |||
| 4318 | return (error); | |||
| 4319 | } | |||
| 4320 | ||||
| 4321 | /* | |||
| 4322 | * syscall for the rpc.lockd to use to translate a NFS file handle into an | |||
| 4323 | * open descriptor. | |||
| 4324 | * | |||
| 4325 | * warning: do not remove the priv_check() call or this becomes one giant | |||
| 4326 | * security hole. | |||
| 4327 | */ | |||
| 4328 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4329 | struct fhopen_args { | |||
| 4330 | const struct fhandle *u_fhp; | |||
| 4331 | int flags; | |||
| 4332 | }; | |||
| 4333 | #endif | |||
| 4334 | int | |||
| 4335 | sys_fhopen(struct thread *td, struct fhopen_args *uap) | |||
| 4336 | { | |||
| 4337 | struct mount *mp; | |||
| 4338 | struct vnode *vp; | |||
| 4339 | struct fhandle fhp; | |||
| 4340 | struct file *fp; | |||
| 4341 | int fmode, error; | |||
| 4342 | int indx; | |||
| 4343 | ||||
| 4344 | error = priv_check(td, PRIV_VFS_FHOPEN323); | |||
| 4345 | if (error != 0) | |||
| 4346 | return (error); | |||
| 4347 | indx = -1; | |||
| 4348 | fmode = FFLAGS(uap->flags)((uap->flags) & 0x00040000 ? (uap->flags) : (uap-> flags) + 1); | |||
| 4349 | /* why not allow a non-read/write open for our lockd? */ | |||
| 4350 | if (((fmode & (FREAD0x0001 | FWRITE0x0002)) == 0) || (fmode & O_CREAT0x0200)) | |||
| 4351 | return (EINVAL22); | |||
| 4352 | error = copyin(uap->u_fhp, &fhp, sizeof(fhp)); | |||
| 4353 | if (error != 0) | |||
| 4354 | return(error); | |||
| 4355 | /* find the mount point */ | |||
| 4356 | mp = vfs_busyfs(&fhp.fh_fsid); | |||
| 4357 | if (mp == NULL((void *)0)) | |||
| 4358 | return (ESTALE70); | |||
| 4359 | /* now give me my vnode, it gets returned to me locked */ | |||
| 4360 | error = VFS_FHTOVP(mp, &fhp.fh_fid, LK_EXCLUSIVE, &vp)({ int _rc; _rc = (*(mp)->mnt_op->vfs_fhtovp)(mp, & fhp.fh_fid, 0x080000, &vp); _rc; }); | |||
| 4361 | vfs_unbusy(mp); | |||
| 4362 | if (error != 0) | |||
| 4363 | return (error); | |||
| 4364 | ||||
| 4365 | error = falloc_noinstall(td, &fp); | |||
| 4366 | if (error != 0) { | |||
| 4367 | vput(vp); | |||
| 4368 | return (error); | |||
| 4369 | } | |||
| 4370 | /* | |||
| 4371 | * An extra reference on `fp' has been held for us by | |||
| 4372 | * falloc_noinstall(). | |||
| 4373 | */ | |||
| 4374 | ||||
| 4375 | #ifdef INVARIANTS1 | |||
| 4376 | td->td_dupfd = -1; | |||
| 4377 | #endif | |||
| 4378 | error = vn_open_vnode(vp, fmode, td->td_ucred, td, fp); | |||
| 4379 | if (error != 0) { | |||
| 4380 | KASSERT(fp->f_ops == &badfileops,do { if (__builtin_expect((!(fp->f_ops == &badfileops) ), 0)) panic ("VOP_OPEN in fhopen() set f_ops"); } while (0) | |||
| 4381 | ("VOP_OPEN in fhopen() set f_ops"))do { if (__builtin_expect((!(fp->f_ops == &badfileops) ), 0)) panic ("VOP_OPEN in fhopen() set f_ops"); } while (0); | |||
| 4382 | KASSERT(td->td_dupfd < 0,do { if (__builtin_expect((!(td->td_dupfd < 0)), 0)) panic ("fhopen() encountered fdopen()"); } while (0) | |||
| 4383 | ("fhopen() encountered fdopen()"))do { if (__builtin_expect((!(td->td_dupfd < 0)), 0)) panic ("fhopen() encountered fdopen()"); } while (0); | |||
| 4384 | ||||
| 4385 | vput(vp); | |||
| 4386 | goto bad; | |||
| 4387 | } | |||
| 4388 | #ifdef INVARIANTS1 | |||
| 4389 | td->td_dupfd = 0; | |||
| 4390 | #endif | |||
| 4391 | fp->f_vnode = vp; | |||
| 4392 | fp->f_seqcount = 1; | |||
| 4393 | finit(fp, (fmode & FMASK(0x0001|0x0002|0x0008|0x0040|0x0080|0x0004|0x00010000|0x00040000 )) | (fp->f_flag & FHASLOCK0x4000), DTYPE_VNODE1, vp, | |||
| 4394 | &vnops); | |||
| 4395 | VOP_UNLOCK(vp, 0); | |||
| 4396 | if ((fmode & O_TRUNC0x0400) != 0) { | |||
| 4397 | error = fo_truncate(fp, 0, td->td_ucred, td); | |||
| 4398 | if (error != 0) | |||
| 4399 | goto bad; | |||
| 4400 | } | |||
| 4401 | ||||
| 4402 | error = finstall(td, fp, &indx, fmode, NULL((void *)0)); | |||
| 4403 | bad: | |||
| 4404 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 4405 | td->td_retvaltd_uretoff.tdu_retval[0] = indx; | |||
| 4406 | return (error); | |||
| 4407 | } | |||
| 4408 | ||||
| 4409 | /* | |||
| 4410 | * Stat an (NFS) file handle. | |||
| 4411 | */ | |||
| 4412 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4413 | struct fhstat_args { | |||
| 4414 | struct fhandle *u_fhp; | |||
| 4415 | struct stat *sb; | |||
| 4416 | }; | |||
| 4417 | #endif | |||
| 4418 | int | |||
| 4419 | sys_fhstat(struct thread *td, struct fhstat_args *uap) | |||
| 4420 | { | |||
| 4421 | struct stat sb; | |||
| 4422 | struct fhandle fh; | |||
| 4423 | int error; | |||
| 4424 | ||||
| 4425 | error = copyin(uap->u_fhp, &fh, sizeof(fh)); | |||
| 4426 | if (error != 0) | |||
| 4427 | return (error); | |||
| 4428 | error = kern_fhstat(td, fh, &sb); | |||
| 4429 | if (error == 0) | |||
| 4430 | error = copyout(&sb, uap->sb, sizeof(sb)); | |||
| 4431 | return (error); | |||
| 4432 | } | |||
| 4433 | ||||
| 4434 | int | |||
| 4435 | kern_fhstat(struct thread *td, struct fhandle fh, struct stat *sb) | |||
| 4436 | { | |||
| 4437 | struct mount *mp; | |||
| 4438 | struct vnode *vp; | |||
| 4439 | int error; | |||
| 4440 | ||||
| 4441 | error = priv_check(td, PRIV_VFS_FHSTAT324); | |||
| 4442 | if (error != 0) | |||
| 4443 | return (error); | |||
| 4444 | if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL((void *)0)) | |||
| 4445 | return (ESTALE70); | |||
| 4446 | error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp)({ int _rc; _rc = (*(mp)->mnt_op->vfs_fhtovp)(mp, & fh.fh_fid, 0x080000, &vp); _rc; }); | |||
| 4447 | vfs_unbusy(mp); | |||
| 4448 | if (error != 0) | |||
| 4449 | return (error); | |||
| 4450 | error = vn_stat(vp, sb, td->td_ucred, NOCRED((struct ucred *)0), td); | |||
| 4451 | vput(vp); | |||
| 4452 | return (error); | |||
| 4453 | } | |||
| 4454 | ||||
| 4455 | /* | |||
| 4456 | * Implement fstatfs() for (NFS) file handles. | |||
| 4457 | */ | |||
| 4458 | #ifndef _SYS_SYSPROTO_H_ | |||
| 4459 | struct fhstatfs_args { | |||
| 4460 | struct fhandle *u_fhp; | |||
| 4461 | struct statfs *buf; | |||
| 4462 | }; | |||
| 4463 | #endif | |||
| 4464 | int | |||
| 4465 | sys_fhstatfs(struct thread *td, struct fhstatfs_args *uap) | |||
| 4466 | { | |||
| 4467 | struct statfs *sfp; | |||
| 4468 | fhandle_t fh; | |||
| 4469 | int error; | |||
| 4470 | ||||
| 4471 | error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t)); | |||
| 4472 | if (error != 0) | |||
| 4473 | return (error); | |||
| 4474 | sfp = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK0x0002); | |||
| 4475 | error = kern_fhstatfs(td, fh, sfp); | |||
| 4476 | if (error == 0) | |||
| 4477 | error = copyout(sfp, uap->buf, sizeof(*sfp)); | |||
| 4478 | free(sfp, M_STATFS); | |||
| 4479 | return (error); | |||
| 4480 | } | |||
| 4481 | ||||
| 4482 | int | |||
| 4483 | kern_fhstatfs(struct thread *td, fhandle_t fh, struct statfs *buf) | |||
| 4484 | { | |||
| 4485 | struct statfs *sp; | |||
| 4486 | struct mount *mp; | |||
| 4487 | struct vnode *vp; | |||
| 4488 | int error; | |||
| 4489 | ||||
| 4490 | error = priv_check(td, PRIV_VFS_FHSTATFS325); | |||
| 4491 | if (error != 0) | |||
| 4492 | return (error); | |||
| 4493 | if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL((void *)0)) | |||
| 4494 | return (ESTALE70); | |||
| 4495 | error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp)({ int _rc; _rc = (*(mp)->mnt_op->vfs_fhtovp)(mp, & fh.fh_fid, 0x080000, &vp); _rc; }); | |||
| 4496 | if (error != 0) { | |||
| 4497 | vfs_unbusy(mp); | |||
| 4498 | return (error); | |||
| 4499 | } | |||
| 4500 | vput(vp); | |||
| 4501 | error = prison_canseemount(td->td_ucred, mp); | |||
| 4502 | if (error != 0) | |||
| 4503 | goto out; | |||
| 4504 | #ifdef MAC1 | |||
| 4505 | error = mac_mount_check_stat(td->td_ucred, mp); | |||
| 4506 | if (error != 0) | |||
| 4507 | goto out; | |||
| 4508 | #endif | |||
| 4509 | /* | |||
| 4510 | * Set these in case the underlying filesystem fails to do so. | |||
| 4511 | */ | |||
| 4512 | sp = &mp->mnt_stat; | |||
| 4513 | sp->f_version = STATFS_VERSION0x20140518; | |||
| 4514 | sp->f_namemax = NAME_MAX255; | |||
| 4515 | sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK(0x0000000000000001ULL | 0x0000000000000002ULL | 0x0000000000000004ULL | 0x0000000000000008ULL | 0x0000000000000020ULL | 0x0000000100000000ULL | 0x0000000000000040ULL | 0x0000000000000080ULL | 0x0000000000000100ULL | 0x0000000000000200ULL | 0x0000000000000400ULL| 0x0000000000000800ULL | 0x0000000000001000ULL | 0x0000000000008000ULL | 0x0000000000002000ULL | 0x0000000000004000ULL | 0x0000000010000000ULL | 0x0000000040000000ULL | 0x0000000080000000ULL | 0x0000000000100000ULL | 0x0000000000200000ULL | 0x0000000000800000ULL | 0x0000000020000000ULL | 0x0000000000400000ULL | 0x0000000002000000ULL | 0x0000000004000000ULL | 0x0000000008000000ULL | 0x0000000000000010ULL | 0x0000000200000000ULL | 0x0000000400000000ULL ); | |||
| 4516 | error = VFS_STATFS(mp, sp)({ int _rc; _rc = __vfs_statfs((mp), (sp)); _rc; }); | |||
| 4517 | if (error == 0) | |||
| 4518 | *buf = *sp; | |||
| 4519 | out: | |||
| 4520 | vfs_unbusy(mp); | |||
| 4521 | return (error); | |||
| 4522 | } | |||
| 4523 | ||||
| 4524 | int | |||
| 4525 | kern_posix_fallocate(struct thread *td, int fd, off_t offset, off_t len) | |||
| 4526 | { | |||
| 4527 | struct file *fp; | |||
| 4528 | struct mount *mp; | |||
| 4529 | struct vnode *vp; | |||
| 4530 | off_t olen, ooffset; | |||
| 4531 | int error; | |||
| 4532 | #ifdef AUDIT1 | |||
| 4533 | int audited_vnode1 = 0; | |||
| 4534 | #endif | |||
| 4535 | ||||
| 4536 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 4537 | if (offset < 0 || len <= 0) | |||
| 4538 | return (EINVAL22); | |||
| 4539 | /* Check for wrap. */ | |||
| 4540 | if (offset > OFF_MAX0x7fffffffffffffff - len) | |||
| 4541 | return (EFBIG27); | |||
| 4542 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 4543 | error = fget(td, fd, &cap_pwrite_rights, &fp); | |||
| 4544 | if (error != 0) | |||
| 4545 | return (error); | |||
| 4546 | AUDIT_ARG_FILE(td->td_proc, fp)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_file((td->td_proc), (fp)); } while (0); | |||
| 4547 | if ((fp->f_ops->fo_flags & DFLAG_SEEKABLE0x02) == 0) { | |||
| 4548 | error = ESPIPE29; | |||
| 4549 | goto out; | |||
| 4550 | } | |||
| 4551 | if ((fp->f_flag & FWRITE0x0002) == 0) { | |||
| 4552 | error = EBADF9; | |||
| 4553 | goto out; | |||
| 4554 | } | |||
| 4555 | if (fp->f_type != DTYPE_VNODE1) { | |||
| 4556 | error = ENODEV19; | |||
| 4557 | goto out; | |||
| 4558 | } | |||
| 4559 | vp = fp->f_vnode; | |||
| 4560 | if (vp->v_type != VREG) { | |||
| 4561 | error = ENODEV19; | |||
| 4562 | goto out; | |||
| 4563 | } | |||
| 4564 | ||||
| 4565 | /* Allocating blocks may take a long time, so iterate. */ | |||
| 4566 | for (;;) { | |||
| 4567 | olen = len; | |||
| 4568 | ooffset = offset; | |||
| 4569 | ||||
| 4570 | bwillwrite(); | |||
| 4571 | mp = NULL((void *)0); | |||
| 4572 | error = vn_start_write(vp, &mp, V_WAIT0x0001 | PCATCH0x100); | |||
| 4573 | if (error != 0) | |||
| 4574 | break; | |||
| 4575 | error = vn_lock(vp, LK_EXCLUSIVE)_vn_lock(vp, 0x080000, "/root/freebsd/sys/kern/vfs_syscalls.c" , 4575); | |||
| 4576 | if (error != 0) { | |||
| 4577 | vn_finished_write(mp); | |||
| 4578 | break; | |||
| 4579 | } | |||
| 4580 | #ifdef AUDIT1 | |||
| 4581 | if (!audited_vnode1) { | |||
| 4582 | AUDIT_ARG_VNODE1(vp)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_vnode1((vp)); } while (0); | |||
| 4583 | audited_vnode1 = 1; | |||
| 4584 | } | |||
| 4585 | #endif | |||
| 4586 | #ifdef MAC1 | |||
| 4587 | error = mac_vnode_check_write(td->td_ucred, fp->f_cred, vp); | |||
| 4588 | if (error == 0) | |||
| 4589 | #endif | |||
| 4590 | error = VOP_ALLOCATE(vp, &offset, &len); | |||
| 4591 | VOP_UNLOCK(vp, 0); | |||
| 4592 | vn_finished_write(mp); | |||
| 4593 | ||||
| 4594 | if (olen + ooffset != offset + len) { | |||
| 4595 | panic("offset + len changed from %jx/%jx to %jx/%jx", | |||
| 4596 | ooffset, olen, offset, len); | |||
| 4597 | } | |||
| 4598 | if (error != 0 || len == 0) | |||
| 4599 | break; | |||
| 4600 | KASSERT(olen > len, ("Iteration did not make progress?"))do { if (__builtin_expect((!(olen > len)), 0)) panic ("Iteration did not make progress?" ); } while (0); | |||
| 4601 | maybe_yield(); | |||
| 4602 | } | |||
| 4603 | out: | |||
| 4604 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 4605 | return (error); | |||
| 4606 | } | |||
| 4607 | ||||
| 4608 | int | |||
| 4609 | sys_posix_fallocate(struct thread *td, struct posix_fallocate_args *uap) | |||
| 4610 | { | |||
| 4611 | int error; | |||
| 4612 | ||||
| 4613 | error = kern_posix_fallocate(td, uap->fd, uap->offset, uap->len); | |||
| 4614 | return (kern_posix_error(td, error)); | |||
| 4615 | } | |||
| 4616 | ||||
| 4617 | /* | |||
| 4618 | * Unlike madvise(2), we do not make a best effort to remember every | |||
| 4619 | * possible caching hint. Instead, we remember the last setting with | |||
| 4620 | * the exception that we will allow POSIX_FADV_NORMAL to adjust the | |||
| 4621 | * region of any current setting. | |||
| 4622 | */ | |||
| 4623 | int | |||
| 4624 | kern_posix_fadvise(struct thread *td, int fd, off_t offset, off_t len, | |||
| 4625 | int advice) | |||
| 4626 | { | |||
| 4627 | struct fadvise_info *fa, *new; | |||
| 4628 | struct file *fp; | |||
| 4629 | struct vnode *vp; | |||
| 4630 | off_t end; | |||
| 4631 | int error; | |||
| 4632 | ||||
| 4633 | if (offset < 0 || len < 0 || offset > OFF_MAX0x7fffffffffffffff - len) | |||
| 4634 | return (EINVAL22); | |||
| 4635 | AUDIT_ARG_VALUE(advice)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_value((advice)); } while (0); | |||
| 4636 | switch (advice) { | |||
| 4637 | case POSIX_FADV_SEQUENTIAL2: | |||
| 4638 | case POSIX_FADV_RANDOM1: | |||
| 4639 | case POSIX_FADV_NOREUSE5: | |||
| 4640 | new = malloc(sizeof(*fa), M_FADVISE, M_WAITOK0x0002); | |||
| 4641 | break; | |||
| 4642 | case POSIX_FADV_NORMAL0: | |||
| 4643 | case POSIX_FADV_WILLNEED3: | |||
| 4644 | case POSIX_FADV_DONTNEED4: | |||
| 4645 | new = NULL((void *)0); | |||
| 4646 | break; | |||
| 4647 | default: | |||
| 4648 | return (EINVAL22); | |||
| 4649 | } | |||
| 4650 | /* XXX: CAP_POSIX_FADVISE? */ | |||
| 4651 | AUDIT_ARG_FD(fd)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_fd((fd)); } while (0); | |||
| 4652 | error = fget(td, fd, &cap_no_rights, &fp); | |||
| 4653 | if (error != 0) | |||
| 4654 | goto out; | |||
| 4655 | AUDIT_ARG_FILE(td->td_proc, fp)do { if ((__builtin_expect((((__curthread()))->td_pflags & 0x01000000), 0))) audit_arg_file((td->td_proc), (fp)); } while (0); | |||
| 4656 | if ((fp->f_ops->fo_flags & DFLAG_SEEKABLE0x02) == 0) { | |||
| 4657 | error = ESPIPE29; | |||
| 4658 | goto out; | |||
| 4659 | } | |||
| 4660 | if (fp->f_type != DTYPE_VNODE1) { | |||
| 4661 | error = ENODEV19; | |||
| 4662 | goto out; | |||
| 4663 | } | |||
| 4664 | vp = fp->f_vnode; | |||
| 4665 | if (vp->v_type != VREG) { | |||
| 4666 | error = ENODEV19; | |||
| 4667 | goto out; | |||
| 4668 | } | |||
| 4669 | if (len == 0) | |||
| 4670 | end = OFF_MAX0x7fffffffffffffff; | |||
| 4671 | else | |||
| 4672 | end = offset + len - 1; | |||
| 4673 | switch (advice) { | |||
| 4674 | case POSIX_FADV_SEQUENTIAL2: | |||
| 4675 | case POSIX_FADV_RANDOM1: | |||
| 4676 | case POSIX_FADV_NOREUSE5: | |||
| 4677 | /* | |||
| 4678 | * Try to merge any existing non-standard region with | |||
| 4679 | * this new region if possible, otherwise create a new | |||
| 4680 | * non-standard region for this request. | |||
| 4681 | */ | |||
| 4682 | mtx_pool_lock(mtxpool_sleep, fp)__mtx_lock_flags(&((((mtx_pool_find((mtxpool_sleep), (fp) )))))->mtx_lock, ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c" ), (4682)); | |||
| 4683 | fa = fp->f_advicef_vnun.fvn_advice; | |||
| 4684 | if (fa != NULL((void *)0) && fa->fa_advice == advice && | |||
| 4685 | ((fa->fa_start <= end && fa->fa_end >= offset) || | |||
| 4686 | (end != OFF_MAX0x7fffffffffffffff && fa->fa_start == end + 1) || | |||
| 4687 | (fa->fa_end != OFF_MAX0x7fffffffffffffff && fa->fa_end + 1 == offset))) { | |||
| 4688 | if (offset < fa->fa_start) | |||
| 4689 | fa->fa_start = offset; | |||
| 4690 | if (end > fa->fa_end) | |||
| 4691 | fa->fa_end = end; | |||
| 4692 | } else { | |||
| 4693 | new->fa_advice = advice; | |||
| 4694 | new->fa_start = offset; | |||
| 4695 | new->fa_end = end; | |||
| 4696 | fp->f_advicef_vnun.fvn_advice = new; | |||
| 4697 | new = fa; | |||
| 4698 | } | |||
| 4699 | mtx_pool_unlock(mtxpool_sleep, fp)__mtx_unlock_flags(&((((mtx_pool_find((mtxpool_sleep), (fp ))))))->mtx_lock, ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c" ), (4699)); | |||
| 4700 | break; | |||
| 4701 | case POSIX_FADV_NORMAL0: | |||
| 4702 | /* | |||
| 4703 | * If a the "normal" region overlaps with an existing | |||
| 4704 | * non-standard region, trim or remove the | |||
| 4705 | * non-standard region. | |||
| 4706 | */ | |||
| 4707 | mtx_pool_lock(mtxpool_sleep, fp)__mtx_lock_flags(&((((mtx_pool_find((mtxpool_sleep), (fp) )))))->mtx_lock, ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c" ), (4707)); | |||
| 4708 | fa = fp->f_advicef_vnun.fvn_advice; | |||
| 4709 | if (fa != NULL((void *)0)) { | |||
| 4710 | if (offset <= fa->fa_start && end >= fa->fa_end) { | |||
| 4711 | new = fa; | |||
| 4712 | fp->f_advicef_vnun.fvn_advice = NULL((void *)0); | |||
| 4713 | } else if (offset <= fa->fa_start && | |||
| 4714 | end >= fa->fa_start) | |||
| 4715 | fa->fa_start = end + 1; | |||
| 4716 | else if (offset <= fa->fa_end && end >= fa->fa_end) | |||
| 4717 | fa->fa_end = offset - 1; | |||
| 4718 | else if (offset >= fa->fa_start && end <= fa->fa_end) { | |||
| 4719 | /* | |||
| 4720 | * If the "normal" region is a middle | |||
| 4721 | * portion of the existing | |||
| 4722 | * non-standard region, just remove | |||
| 4723 | * the whole thing rather than picking | |||
| 4724 | * one side or the other to | |||
| 4725 | * preserve. | |||
| 4726 | */ | |||
| 4727 | new = fa; | |||
| 4728 | fp->f_advicef_vnun.fvn_advice = NULL((void *)0); | |||
| 4729 | } | |||
| 4730 | } | |||
| 4731 | mtx_pool_unlock(mtxpool_sleep, fp)__mtx_unlock_flags(&((((mtx_pool_find((mtxpool_sleep), (fp ))))))->mtx_lock, ((0)), ("/root/freebsd/sys/kern/vfs_syscalls.c" ), (4731)); | |||
| 4732 | break; | |||
| 4733 | case POSIX_FADV_WILLNEED3: | |||
| 4734 | case POSIX_FADV_DONTNEED4: | |||
| 4735 | error = VOP_ADVISE(vp, offset, end, advice); | |||
| 4736 | break; | |||
| 4737 | } | |||
| 4738 | out: | |||
| 4739 | if (fp != NULL((void *)0)) | |||
| 4740 | fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td)) : _fnoop()); | |||
| 4741 | free(new, M_FADVISE); | |||
| 4742 | return (error); | |||
| 4743 | } | |||
| 4744 | ||||
| 4745 | int | |||
| 4746 | sys_posix_fadvise(struct thread *td, struct posix_fadvise_args *uap) | |||
| 4747 | { | |||
| 4748 | int error; | |||
| 4749 | ||||
| 4750 | error = kern_posix_fadvise(td, uap->fd, uap->offset, uap->len, | |||
| 4751 | uap->advice); | |||
| 4752 | return (kern_posix_error(td, error)); | |||
| 4753 | } |