Bug Summary

File:modules/linux/../../compat/linux/linux_stats.c
Warning:line 519, column 10
Copies out a struct with untouched element(s): f_spare

Annotated Source Code

1/*-
2 * Copyright (c) 1994-1995 Søren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: releng/11.0/sys/compat/linux/linux_stats.c 297072 2016-03-20 19:06:21Z dchagin $")__asm__(".ident\t\"" "$FreeBSD: releng/11.0/sys/compat/linux/linux_stats.c 297072 2016-03-20 19:06:21Z dchagin $"
"\"");
31
32#include "opt_compat.h"
33
34#include <sys/param.h>
35#include <sys/capsicum.h>
36#include <sys/dirent.h>
37#include <sys/file.h>
38#include <sys/filedesc.h>
39#include <sys/proc.h>
40#include <sys/malloc.h>
41#include <sys/mount.h>
42#include <sys/namei.h>
43#include <sys/stat.h>
44#include <sys/syscallsubr.h>
45#include <sys/systm.h>
46#include <sys/tty.h>
47#include <sys/vnode.h>
48#include <sys/conf.h>
49#include <sys/fcntl.h>
50
51#ifdef COMPAT_LINUX321
52#include <machine/../linux32/linux.h>
53#include <machine/../linux32/linux32_proto.h>
54#else
55#include <machine/../linux/linux.h>
56#include <machine/../linux/linux_proto.h>
57#endif
58
59#include <compat/linux/linux_util.h>
60#include <compat/linux/linux_file.h>
61
62
63static void
64translate_vnhook_major_minor(struct vnode *vp, struct stat *sb)
65{
66 int major, minor;
67
68 if (vp->v_type == VCHR && vp->v_rdevv_un.vu_cdev != NULL((void *)0) &&
69 linux_driver_get_major_minor(devtoname(vp->v_rdevv_un.vu_cdev),
70 &major, &minor) == 0) {
71 sb->st_rdev = (major << 8 | minor);
72 }
73}
74
75static int
76linux_kern_statat(struct thread *td, int flag, int fd, char *path,
77 enum uio_seg pathseg, struct stat *sbp)
78{
79
80 return (kern_statat(td, flag, fd, path, pathseg, sbp,
81 translate_vnhook_major_minor));
82}
83
84static int
85linux_kern_stat(struct thread *td, char *path, enum uio_seg pathseg,
86 struct stat *sbp)
87{
88
89 return (linux_kern_statat(td, 0, AT_FDCWD-100, path, pathseg, sbp));
90}
91
92static int
93linux_kern_lstat(struct thread *td, char *path, enum uio_seg pathseg,
94 struct stat *sbp)
95{
96
97 return (linux_kern_statat(td, AT_SYMLINK_NOFOLLOW0x200, AT_FDCWD-100, path,
98 pathseg, sbp));
99}
100
101/*
102 * XXX: This was removed from newstat_copyout(), and almost identical
103 * XXX: code was in stat64_copyout(). findcdev() needs to be replaced
104 * XXX: with something that does lookup and locking properly.
105 * XXX: When somebody fixes this: please try to avoid duplicating it.
106 */
107#if 0
108static void
109disk_foo(struct somestat *tbuf)
110{
111 struct cdevsw *cdevsw;
112 struct cdev *dev;
113
114 /* Lie about disk drives which are character devices
115 * in FreeBSD but block devices under Linux.
116 */
117 if (S_ISCHR(tbuf.st_mode)(((tbuf.st_mode) & 0170000) == 0020000) &&
118 (dev = findcdev(buf->st_rdev)) != NULL((void *)0)) {
119 cdevsw = dev_refthread(dev);
120 if (cdevsw != NULL((void *)0)) {
121 if (cdevsw->d_flags & D_DISK0x0002) {
122 tbuf.st_mode &= ~S_IFMT0170000;
123 tbuf.st_mode |= S_IFBLK0060000;
124
125 /* XXX this may not be quite right */
126 /* Map major number to 0 */
127 tbuf.st_dev = minor(buf->st_dev)((int)((buf->st_dev)&0xffff00ff)) & 0xf;
128 tbuf.st_rdev = buf->st_rdev & 0xff;
129 }
130 dev_relthread(dev);
131 }
132 }
133
134}
135#endif
136
137static void
138translate_fd_major_minor(struct thread *td, int fd, struct stat *buf)
139{
140 struct file *fp;
141 struct vnode *vp;
142 cap_rights_t rights;
143 int major, minor;
144
145 /*
146 * No capability rights required here.
147 */
148 if ((!S_ISCHR(buf->st_mode)(((buf->st_mode) & 0170000) == 0020000) && !S_ISBLK(buf->st_mode)(((buf->st_mode) & 0170000) == 0060000)) ||
149 fget(td, fd, cap_rights_init(&rights)__cap_rights_init(0, &rights, 0ULL), &fp) != 0)
150 return;
151 vp = fp->f_vnode;
152 if (vp != NULL((void *)0) && vp->v_rdevv_un.vu_cdev != NULL((void *)0) &&
153 linux_driver_get_major_minor(devtoname(vp->v_rdevv_un.vu_cdev),
154 &major, &minor) == 0) {
155 buf->st_rdev = (major << 8 | minor);
156 } else if (fp->f_type == DTYPE_PTS10) {
157 struct tty *tp = fp->f_data;
158
159 /* Convert the numbers for the slave device. */
160 if (linux_driver_get_major_minor(devtoname(tp->t_dev),
161 &major, &minor) == 0) {
162 buf->st_rdev = (major << 8 | minor);
163 }
164 }
165 fdrop(fp, td)(refcount_release(&(fp)->f_count) ? _fdrop((fp), (td))
: _fnoop());
166}
167
168static int
169newstat_copyout(struct stat *buf, void *ubuf)
170{
171 struct l_newstat tbuf;
172
173 bzero(&tbuf, sizeof(tbuf));
174 tbuf.st_dev = minor(buf->st_dev)((int)((buf->st_dev)&0xffff00ff)) | (major(buf->st_dev)((int)(((u_int)(buf->st_dev) >> 8)&0xff)) << 8);
175 tbuf.st_ino = buf->st_ino;
176 tbuf.st_mode = buf->st_mode;
177 tbuf.st_nlink = buf->st_nlink;
178 tbuf.st_uid = buf->st_uid;
179 tbuf.st_gid = buf->st_gid;
180 tbuf.st_rdev = buf->st_rdev;
181 tbuf.st_size = buf->st_size;
182 tbuf.st_atim.tv_sec = buf->st_atim.tv_sec;
183 tbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec;
184 tbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec;
185 tbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec;
186 tbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec;
187 tbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec;
188 tbuf.st_blksize = buf->st_blksize;
189 tbuf.st_blocks = buf->st_blocks;
190
191 return (copyout(&tbuf, ubuf, sizeof(tbuf)));
192}
193
194int
195linux_newstat(struct thread *td, struct linux_newstat_args *args)
196{
197 struct stat buf;
198 char *path;
199 int error;
200
201 LCONVPATHEXIST(td, args->path, &path)do { int _error; _error = linux_emul_convpath(td, args->path
, UIO_USERSPACE, &path, 0, -100); if (*(&path) == ((void
*)0)) return (_error); } while (0);
202
203#ifdef DEBUG
204 if (ldebug(newstat)((((const unsigned char *)(linux_debug_map))[(106)/8] & (
1<<((106)%8))) == 0))
205 printf(ARGS(newstat, "%s, *")"linux(%ld/%ld): ""newstat""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, path);
206#endif
207
208 error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf);
209 LFREEPATH(path)free(path, M_TEMP);
210 if (error)
211 return (error);
212 return (newstat_copyout(&buf, args->buf));
213}
214
215int
216linux_newlstat(struct thread *td, struct linux_newlstat_args *args)
217{
218 struct stat sb;
219 char *path;
220 int error;
221
222 LCONVPATHEXIST(td, args->path, &path)do { int _error; _error = linux_emul_convpath(td, args->path
, UIO_USERSPACE, &path, 0, -100); if (*(&path) == ((void
*)0)) return (_error); } while (0);
223
224#ifdef DEBUG
225 if (ldebug(newlstat)((((const unsigned char *)(linux_debug_map))[(107)/8] & (
1<<((107)%8))) == 0))
226 printf(ARGS(newlstat, "%s, *")"linux(%ld/%ld): ""newlstat""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, path);
227#endif
228
229 error = linux_kern_lstat(td, path, UIO_SYSSPACE, &sb);
230 LFREEPATH(path)free(path, M_TEMP);
231 if (error)
232 return (error);
233 return (newstat_copyout(&sb, args->buf));
234}
235
236int
237linux_newfstat(struct thread *td, struct linux_newfstat_args *args)
238{
239 struct stat buf;
240 int error;
241
242#ifdef DEBUG
243 if (ldebug(newfstat)((((const unsigned char *)(linux_debug_map))[(108)/8] & (
1<<((108)%8))) == 0))
244 printf(ARGS(newfstat, "%d, *")"linux(%ld/%ld): ""newfstat""(""%d, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, args->fd);
245#endif
246
247 error = kern_fstat(td, args->fd, &buf);
248 translate_fd_major_minor(td, args->fd, &buf);
249 if (!error)
250 error = newstat_copyout(&buf, args->buf);
251
252 return (error);
253}
254
255#if defined(__i386__) || (defined(__amd64__1) && defined(COMPAT_LINUX321))
256static int
257stat_copyout(struct stat *buf, void *ubuf)
258{
259 struct l_stat lbuf;
260
261 bzero(&lbuf, sizeof(lbuf));
262 lbuf.st_dev = buf->st_dev;
263 lbuf.st_ino = buf->st_ino;
264 lbuf.st_mode = buf->st_mode;
265 lbuf.st_nlink = buf->st_nlink;
266 lbuf.st_uid = buf->st_uid;
267 lbuf.st_gid = buf->st_gid;
268 lbuf.st_rdev = buf->st_rdev;
269 if (buf->st_size < (quad_t)1 << 32)
270 lbuf.st_size = buf->st_size;
271 else
272 lbuf.st_size = -2;
273 lbuf.st_atim.tv_sec = buf->st_atim.tv_sec;
274 lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec;
275 lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec;
276 lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec;
277 lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec;
278 lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec;
279 lbuf.st_blksize = buf->st_blksize;
280 lbuf.st_blocks = buf->st_blocks;
281 lbuf.st_flags = buf->st_flags;
282 lbuf.st_gen = buf->st_gen;
283
284 return (copyout(&lbuf, ubuf, sizeof(lbuf)));
285}
286
287int
288linux_stat(struct thread *td, struct linux_stat_args *args)
289{
290 struct stat buf;
291 char *path;
292 int error;
293
294 LCONVPATHEXIST(td, args->path, &path)do { int _error; _error = linux_emul_convpath(td, args->path
, UIO_USERSPACE, &path, 0, -100); if (*(&path) == ((void
*)0)) return (_error); } while (0);
295
296#ifdef DEBUG
297 if (ldebug(stat)((((const unsigned char *)(linux_debug_map))[(18)/8] & (1
<<((18)%8))) == 0))
298 printf(ARGS(stat, "%s, *")"linux(%ld/%ld): ""stat""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, path);
299#endif
300 error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf);
301 if (error) {
302 LFREEPATH(path)free(path, M_TEMP);
303 return (error);
304 }
305 LFREEPATH(path)free(path, M_TEMP);
306 return (stat_copyout(&buf, args->up));
307}
308
309int
310linux_lstat(struct thread *td, struct linux_lstat_args *args)
311{
312 struct stat buf;
313 char *path;
314 int error;
315
316 LCONVPATHEXIST(td, args->path, &path)do { int _error; _error = linux_emul_convpath(td, args->path
, UIO_USERSPACE, &path, 0, -100); if (*(&path) == ((void
*)0)) return (_error); } while (0);
317
318#ifdef DEBUG
319 if (ldebug(lstat)((((const unsigned char *)(linux_debug_map))[(84)/8] & (1
<<((84)%8))) == 0))
320 printf(ARGS(lstat, "%s, *")"linux(%ld/%ld): ""lstat""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, path);
321#endif
322 error = linux_kern_lstat(td, path, UIO_SYSSPACE, &buf);
323 if (error) {
324 LFREEPATH(path)free(path, M_TEMP);
325 return (error);
326 }
327 LFREEPATH(path)free(path, M_TEMP);
328 return (stat_copyout(&buf, args->up));
329}
330#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
331
332struct l_statfs {
333 l_long f_type;
334 l_long f_bsize;
335 l_long f_blocks;
336 l_long f_bfree;
337 l_long f_bavail;
338 l_long f_files;
339 l_long f_ffree;
340 l_fsid_t f_fsid;
341 l_long f_namelen;
342 l_long f_spare[6];
343};
344
345#define LINUX_CODA_SUPER_MAGIC0x73757245L 0x73757245L
346#define LINUX_EXT2_SUPER_MAGIC0xEF53L 0xEF53L
347#define LINUX_HPFS_SUPER_MAGIC0xf995e849L 0xf995e849L
348#define LINUX_ISOFS_SUPER_MAGIC0x9660L 0x9660L
349#define LINUX_MSDOS_SUPER_MAGIC0x4d44L 0x4d44L
350#define LINUX_NCP_SUPER_MAGIC0x564cL 0x564cL
351#define LINUX_NFS_SUPER_MAGIC0x6969L 0x6969L
352#define LINUX_NTFS_SUPER_MAGIC0x5346544EL 0x5346544EL
353#define LINUX_PROC_SUPER_MAGIC0x9fa0L 0x9fa0L
354#define LINUX_UFS_SUPER_MAGIC0x00011954L 0x00011954L /* XXX - UFS_MAGIC in Linux */
355#define LINUX_DEVFS_SUPER_MAGIC0x1373L 0x1373L
356#define LINUX_SHMFS_MAGIC0x01021994 0x01021994
357
358static long
359bsd_to_linux_ftype(const char *fstypename)
360{
361 int i;
362 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
363 {"ufs", LINUX_UFS_SUPER_MAGIC0x00011954L},
364 {"cd9660", LINUX_ISOFS_SUPER_MAGIC0x9660L},
365 {"nfs", LINUX_NFS_SUPER_MAGIC0x6969L},
366 {"ext2fs", LINUX_EXT2_SUPER_MAGIC0xEF53L},
367 {"procfs", LINUX_PROC_SUPER_MAGIC0x9fa0L},
368 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC0x4d44L},
369 {"ntfs", LINUX_NTFS_SUPER_MAGIC0x5346544EL},
370 {"nwfs", LINUX_NCP_SUPER_MAGIC0x564cL},
371 {"hpfs", LINUX_HPFS_SUPER_MAGIC0xf995e849L},
372 {"coda", LINUX_CODA_SUPER_MAGIC0x73757245L},
373 {"devfs", LINUX_DEVFS_SUPER_MAGIC0x1373L},
374 {"tmpfs", LINUX_SHMFS_MAGIC0x01021994},
375 {NULL((void *)0), 0L}};
376
377 for (i = 0; b2l_tbl[i].bsd_name != NULL((void *)0); i++)
378 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0)
379 return (b2l_tbl[i].linux_type);
380
381 return (0L);
382}
383
384static int
385bsd_to_linux_statfs(struct statfs *bsd_statfs, struct l_statfs *linux_statfs)
386{
387#if defined(__i386__) || (defined(__amd64__1) && defined(COMPAT_LINUX321))
388 uint64_t tmp;
389
390#define LINUX_HIBITS 0xffffffff00000000ULL
391
392 tmp = bsd_statfs->f_blocks | bsd_statfs->f_bfree | bsd_statfs->f_files |
393 bsd_statfs->f_bsize;
394 if ((bsd_statfs->f_bavail != -1 && (bsd_statfs->f_bavail & LINUX_HIBITS)) ||
395 (bsd_statfs->f_ffree != -1 && (bsd_statfs->f_ffree & LINUX_HIBITS)) ||
396 (tmp & LINUX_HIBITS))
397 return (EOVERFLOW84);
398#undef LINUX_HIBITS
399#endif
400 linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
401 linux_statfs->f_bsize = bsd_statfs->f_bsize;
402 linux_statfs->f_blocks = bsd_statfs->f_blocks;
403 linux_statfs->f_bfree = bsd_statfs->f_bfree;
404 linux_statfs->f_bavail = bsd_statfs->f_bavail;
405 linux_statfs->f_ffree = bsd_statfs->f_ffree;
406 linux_statfs->f_files = bsd_statfs->f_files;
407 linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
408 linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
409 linux_statfs->f_namelen = MAXNAMLEN255;
410
411 return (0);
412}
413
414int
415linux_statfs(struct thread *td, struct linux_statfs_args *args)
416{
417 struct l_statfs linux_statfs;
418 struct statfs bsd_statfs;
419 char *path;
420 int error;
421
422 LCONVPATHEXIST(td, args->path, &path)do { int _error; _error = linux_emul_convpath(td, args->path
, UIO_USERSPACE, &path, 0, -100); if (*(&path) == ((void
*)0)) return (_error); } while (0);
423
424#ifdef DEBUG
425 if (ldebug(statfs)((((const unsigned char *)(linux_debug_map))[(99)/8] & (1
<<((99)%8))) == 0))
426 printf(ARGS(statfs, "%s, *")"linux(%ld/%ld): ""statfs""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, path);
427#endif
428 error = kern_statfs(td, path, UIO_SYSSPACE, &bsd_statfs);
429 LFREEPATH(path)free(path, M_TEMP);
430 if (error)
431 return (error);
432 error = bsd_to_linux_statfs(&bsd_statfs, &linux_statfs);
433 if (error)
434 return (error);
435 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs)));
436}
437
438#if defined(__i386__) || (defined(__amd64__1) && defined(COMPAT_LINUX321))
439static void
440bsd_to_linux_statfs64(struct statfs *bsd_statfs, struct l_statfs64 *linux_statfs)
441{
442
443 linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
444 linux_statfs->f_bsize = bsd_statfs->f_bsize;
445 linux_statfs->f_blocks = bsd_statfs->f_blocks;
446 linux_statfs->f_bfree = bsd_statfs->f_bfree;
447 linux_statfs->f_bavail = bsd_statfs->f_bavail;
448 linux_statfs->f_ffree = bsd_statfs->f_ffree;
449 linux_statfs->f_files = bsd_statfs->f_files;
450 linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
451 linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
452 linux_statfs->f_namelen = MAXNAMLEN255;
453}
454
455int
456linux_statfs64(struct thread *td, struct linux_statfs64_args *args)
457{
458 struct l_statfs64 linux_statfs;
459 struct statfs bsd_statfs;
460 char *path;
461 int error;
462
463 if (args->bufsize != sizeof(struct l_statfs64))
464 return EINVAL22;
465
466 LCONVPATHEXIST(td, args->path, &path)do { int _error; _error = linux_emul_convpath(td, args->path
, UIO_USERSPACE, &path, 0, -100); if (*(&path) == ((void
*)0)) return (_error); } while (0);
467
468#ifdef DEBUG
469 if (ldebug(statfs64)((((const unsigned char *)(linux_debug_map))[(268)/8] & (
1<<((268)%8))) == 0))
470 printf(ARGS(statfs64, "%s, *")"linux(%ld/%ld): ""statfs64""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, path);
471#endif
472 error = kern_statfs(td, path, UIO_SYSSPACE, &bsd_statfs);
473 LFREEPATH(path)free(path, M_TEMP);
474 if (error)
475 return (error);
476 bsd_to_linux_statfs64(&bsd_statfs, &linux_statfs);
477 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs)));
478}
479
480int
481linux_fstatfs64(struct thread *td, struct linux_fstatfs64_args *args)
482{
483 struct l_statfs64 linux_statfs;
484 struct statfs bsd_statfs;
485 int error;
486
487#ifdef DEBUG
488 if (ldebug(fstatfs64)((((const unsigned char *)(linux_debug_map))[(269)/8] & (
1<<((269)%8))) == 0))
489 printf(ARGS(fstatfs64, "%d, *")"linux(%ld/%ld): ""fstatfs64""(""%d, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, args->fd);
490#endif
491 if (args->bufsize != sizeof(struct l_statfs64))
492 return (EINVAL22);
493
494 error = kern_fstatfs(td, args->fd, &bsd_statfs);
495 if (error)
496 return error;
497 bsd_to_linux_statfs64(&bsd_statfs, &linux_statfs);
498 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs)));
499}
500#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
501
502int
503linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args)
504{
505 struct l_statfs linux_statfs;
506 struct statfs bsd_statfs;
507 int error;
508
509#ifdef DEBUG
510 if (ldebug(fstatfs)((((const unsigned char *)(linux_debug_map))[(100)/8] & (
1<<((100)%8))) == 0))
511 printf(ARGS(fstatfs, "%d, *")"linux(%ld/%ld): ""fstatfs""(""%d, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, args->fd);
512#endif
513 error = kern_fstatfs(td, args->fd, &bsd_statfs);
514 if (error)
1
Assuming 'error' is 0
→
2
←
Taking false branch
→
515 return (error);
516 error = bsd_to_linux_statfs(&bsd_statfs, &linux_statfs);
517 if (error)
3
←
Taking false branch
→
518 return (error);
519 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs)));
4
←
Copies out a struct with untouched element(s): f_spare
520}
521
522struct l_ustat
523{
524 l_daddr_t f_tfree;
525 l_ino_t f_tinode;
526 char f_fname[6];
527 char f_fpack[6];
528};
529
530int
531linux_ustat(struct thread *td, struct linux_ustat_args *args)
532{
533#ifdef DEBUG
534 if (ldebug(ustat)((((const unsigned char *)(linux_debug_map))[(62)/8] & (1
<<((62)%8))) == 0))
535 printf(ARGS(ustat, "%ju, *")"linux(%ld/%ld): ""ustat""(""%ju, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, (uintmax_t)args->dev);
536#endif
537
538 return (EOPNOTSUPP45);
539}
540
541#if defined(__i386__) || (defined(__amd64__1) && defined(COMPAT_LINUX321))
542
543static int
544stat64_copyout(struct stat *buf, void *ubuf)
545{
546 struct l_stat64 lbuf;
547
548 bzero(&lbuf, sizeof(lbuf));
549 lbuf.st_dev = minor(buf->st_dev)((int)((buf->st_dev)&0xffff00ff)) | (major(buf->st_dev)((int)(((u_int)(buf->st_dev) >> 8)&0xff)) << 8);
550 lbuf.st_ino = buf->st_ino;
551 lbuf.st_mode = buf->st_mode;
552 lbuf.st_nlink = buf->st_nlink;
553 lbuf.st_uid = buf->st_uid;
554 lbuf.st_gid = buf->st_gid;
555 lbuf.st_rdev = buf->st_rdev;
556 lbuf.st_size = buf->st_size;
557 lbuf.st_atim.tv_sec = buf->st_atim.tv_sec;
558 lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec;
559 lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec;
560 lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec;
561 lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec;
562 lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec;
563 lbuf.st_blksize = buf->st_blksize;
564 lbuf.st_blocks = buf->st_blocks;
565
566 /*
567 * The __st_ino field makes all the difference. In the Linux kernel
568 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
569 * but without the assignment to __st_ino the runtime linker refuses
570 * to mmap(2) any shared libraries. I guess it's broken alright :-)
571 */
572 lbuf.__st_ino = buf->st_ino;
573
574 return (copyout(&lbuf, ubuf, sizeof(lbuf)));
575}
576
577int
578linux_stat64(struct thread *td, struct linux_stat64_args *args)
579{
580 struct stat buf;
581 char *filename;
582 int error;
583
584 LCONVPATHEXIST(td, args->filename, &filename)do { int _error; _error = linux_emul_convpath(td, args->filename
, UIO_USERSPACE, &filename, 0, -100); if (*(&filename
) == ((void *)0)) return (_error); } while (0);
585
586#ifdef DEBUG
587 if (ldebug(stat64)((((const unsigned char *)(linux_debug_map))[(195)/8] & (
1<<((195)%8))) == 0))
588 printf(ARGS(stat64, "%s, *")"linux(%ld/%ld): ""stat64""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, filename);
589#endif
590
591 error = linux_kern_stat(td, filename, UIO_SYSSPACE, &buf);
592 LFREEPATH(filename)free(filename, M_TEMP);
593 if (error)
594 return (error);
595 return (stat64_copyout(&buf, args->statbuf));
596}
597
598int
599linux_lstat64(struct thread *td, struct linux_lstat64_args *args)
600{
601 struct stat sb;
602 char *filename;
603 int error;
604
605 LCONVPATHEXIST(td, args->filename, &filename)do { int _error; _error = linux_emul_convpath(td, args->filename
, UIO_USERSPACE, &filename, 0, -100); if (*(&filename
) == ((void *)0)) return (_error); } while (0);
606
607#ifdef DEBUG
608 if (ldebug(lstat64)((((const unsigned char *)(linux_debug_map))[(196)/8] & (
1<<((196)%8))) == 0))
609 printf(ARGS(lstat64, "%s, *")"linux(%ld/%ld): ""lstat64""(""%s, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, args->filename);
610#endif
611
612 error = linux_kern_lstat(td, filename, UIO_SYSSPACE, &sb);
613 LFREEPATH(filename)free(filename, M_TEMP);
614 if (error)
615 return (error);
616 return (stat64_copyout(&sb, args->statbuf));
617}
618
619int
620linux_fstat64(struct thread *td, struct linux_fstat64_args *args)
621{
622 struct stat buf;
623 int error;
624
625#ifdef DEBUG
626 if (ldebug(fstat64)((((const unsigned char *)(linux_debug_map))[(197)/8] & (
1<<((197)%8))) == 0))
627 printf(ARGS(fstat64, "%d, *")"linux(%ld/%ld): ""fstat64""(""%d, *"")\n", (long)td->td_proc
->p_pid, (long)td->td_tid, args->fd);
628#endif
629
630 error = kern_fstat(td, args->fd, &buf);
631 translate_fd_major_minor(td, args->fd, &buf);
632 if (!error)
633 error = stat64_copyout(&buf, args->statbuf);
634
635 return (error);
636}
637
638int
639linux_fstatat64(struct thread *td, struct linux_fstatat64_args *args)
640{
641 char *path;
642 int error, dfd, flag;
643 struct stat buf;
644
645 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW0x100)
646 return (EINVAL22);
647 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW0x100) ?
648 AT_SYMLINK_NOFOLLOW0x200 : 0;
649
650 dfd = (args->dfd == LINUX_AT_FDCWD-100) ? AT_FDCWD-100 : args->dfd;
651 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd)do { int _error; _error = linux_emul_convpath(td, args->pathname
, UIO_USERSPACE, &path, 0, dfd); if (*(&path) == ((void
*)0)) return (_error); } while (0);
652
653#ifdef DEBUG
654 if (ldebug(fstatat64)((((const unsigned char *)(linux_debug_map))[(300)/8] & (
1<<((300)%8))) == 0))
655 printf(ARGS(fstatat64, "%i, %s, %i")"linux(%ld/%ld): ""fstatat64""(""%i, %s, %i"")\n", (long)td->
td_proc->p_pid, (long)td->td_tid, args->dfd, path, args->flag);
656#endif
657
658 error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf);
659 if (!error)
660 error = stat64_copyout(&buf, args->statbuf);
661 LFREEPATH(path)free(path, M_TEMP);
662
663 return (error);
664}
665
666#else /* __amd64__ && !COMPAT_LINUX32 */
667
668int
669linux_newfstatat(struct thread *td, struct linux_newfstatat_args *args)
670{
671 char *path;
672 int error, dfd, flag;
673 struct stat buf;
674
675 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW0x100)
676 return (EINVAL22);
677 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW0x100) ?
678 AT_SYMLINK_NOFOLLOW0x200 : 0;
679
680 dfd = (args->dfd == LINUX_AT_FDCWD-100) ? AT_FDCWD-100 : args->dfd;
681 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd)do { int _error; _error = linux_emul_convpath(td, args->pathname
, UIO_USERSPACE, &path, 0, dfd); if (*(&path) == ((void
*)0)) return (_error); } while (0);
682
683#ifdef DEBUG
684 if (ldebug(newfstatat)((((const unsigned char *)(linux_debug_map))[(LINUX32_SYS_linux_newfstatat
)/8] & (1<<((LINUX32_SYS_linux_newfstatat)%8))) == 0
))
685 printf(ARGS(newfstatat, "%i, %s, %i")"linux(%ld/%ld): ""newfstatat""(""%i, %s, %i"")\n", (long)td->
td_proc->p_pid, (long)td->td_tid, args->dfd, path, args->flag);
686#endif
687
688 error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf);
689 if (error == 0)
690 error = newstat_copyout(&buf, args->statbuf);
691 LFREEPATH(path)free(path, M_TEMP);
692
693 return (error);
694}
695
696#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
697
698int
699linux_syncfs(struct thread *td, struct linux_syncfs_args *args)
700{
701 cap_rights_t rights;
702 struct mount *mp;
703 struct vnode *vp;
704 int error, save;
705
706 error = fgetvp(td, args->fd, cap_rights_init(&rights, CAP_FSYNC)__cap_rights_init(0, &rights, ((1ULL << (57 + (0)))
| (0x0000000000000100ULL)), 0ULL), &vp);
707 if (error != 0)
708 /*
709 * Linux syncfs() returns only EBADF, however fgetvp()
710 * can return EINVAL in case of file descriptor does
711 * not represent a vnode. XXX.
712 */
713 return (error);
714
715 mp = vp->v_mount;
716 mtx_lock(&mountlist_mtx)__mtx_lock_flags(&((((&mountlist_mtx))))->mtx_lock
, ((0)), ("/usr/src/sys/modules/linux/../../compat/linux/linux_stats.c"
), (716));
717 error = vfs_busy(mp, MBF_MNTLSTLOCK0x02);
718 if (error != 0) {
719 /* See comment above. */
720 mtx_unlock(&mountlist_mtx)__mtx_unlock_flags(&((((&mountlist_mtx))))->mtx_lock
, ((0)), ("/usr/src/sys/modules/linux/../../compat/linux/linux_stats.c"
), (720));
721 goto out;
722 }
723 if ((mp->mnt_flag & MNT_RDONLY0x0000000000000001ULL) == 0 &&
724 vn_start_write(NULL((void *)0), &mp, V_NOWAIT0x0002) == 0) {
725 save = curthread_pflags_set(TDP_SYNCIO0x00000800);
726 vfs_msync(mp, MNT_NOWAIT2);
727 VFS_SYNC(mp, MNT_NOWAIT)({ int _rc; do { struct mount *mp__; int _prev_stops; mp__ = (
mp); _prev_stops = sigdeferstop((mp__ != ((void *)0) &&
(mp__->mnt_vfc->vfc_flags & 0x01000000) != 0) ? 2 :
0);; _rc = (*(mp)->mnt_op->vfs_sync)(mp, 2); sigallowstop
(_prev_stops); } while (0); _rc; });
728 curthread_pflags_restore(save);
729 vn_finished_write(mp);
730 }
731 vfs_unbusy(mp);
732
733 out:
734 vrele(vp);
735 return (error);
736}