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/9.0/sys/compat/linux/linux_file.c 225617 2011-09-16 13:58:51Z kmacy $");
31
32 #include "opt_compat.h"
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/capability.h>
37 #include <sys/conf.h>
38 #include <sys/dirent.h>
39 #include <sys/fcntl.h>
40 #include <sys/file.h>
41 #include <sys/filedesc.h>
42 #include <sys/lock.h>
43 #include <sys/malloc.h>
44 #include <sys/mount.h>
45 #include <sys/mutex.h>
46 #include <sys/namei.h>
47 #include <sys/proc.h>
48 #include <sys/stat.h>
49 #include <sys/sx.h>
50 #include <sys/syscallsubr.h>
51 #include <sys/sysproto.h>
52 #include <sys/tty.h>
53 #include <sys/unistd.h>
54 #include <sys/vnode.h>
55
56 #include <security/mac/mac_framework.h>
57
58 #include <ufs/ufs/extattr.h>
59 #include <ufs/ufs/quota.h>
60 #include <ufs/ufs/ufsmount.h>
61
62 #ifdef COMPAT_LINUX32
63 #include <machine/../linux32/linux.h>
64 #include <machine/../linux32/linux32_proto.h>
65 #else
66 #include <machine/../linux/linux.h>
67 #include <machine/../linux/linux_proto.h>
68 #endif
69 #include <compat/linux/linux_util.h>
70 #include <compat/linux/linux_file.h>
71
72 int
73 linux_creat(struct thread *td, struct linux_creat_args *args)
74 {
75 char *path;
76 int error;
77
78 LCONVPATHEXIST(td, args->path, &path);
79
80 #ifdef DEBUG
81 if (ldebug(creat))
82 printf(ARGS(creat, "%s, %d"), path, args->mode);
83 #endif
84 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC,
85 args->mode);
86 LFREEPATH(path);
87 return (error);
88 }
89
90
91 static int
92 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode)
93 {
94 struct proc *p = td->td_proc;
95 struct file *fp;
96 int fd;
97 int bsd_flags, error;
98
99 bsd_flags = 0;
100 switch (l_flags & LINUX_O_ACCMODE) {
101 case LINUX_O_WRONLY:
102 bsd_flags |= O_WRONLY;
103 break;
104 case LINUX_O_RDWR:
105 bsd_flags |= O_RDWR;
106 break;
107 default:
108 bsd_flags |= O_RDONLY;
109 }
110 if (l_flags & LINUX_O_NDELAY)
111 bsd_flags |= O_NONBLOCK;
112 if (l_flags & LINUX_O_APPEND)
113 bsd_flags |= O_APPEND;
114 if (l_flags & LINUX_O_SYNC)
115 bsd_flags |= O_FSYNC;
116 if (l_flags & LINUX_O_NONBLOCK)
117 bsd_flags |= O_NONBLOCK;
118 if (l_flags & LINUX_FASYNC)
119 bsd_flags |= O_ASYNC;
120 if (l_flags & LINUX_O_CREAT)
121 bsd_flags |= O_CREAT;
122 if (l_flags & LINUX_O_TRUNC)
123 bsd_flags |= O_TRUNC;
124 if (l_flags & LINUX_O_EXCL)
125 bsd_flags |= O_EXCL;
126 if (l_flags & LINUX_O_NOCTTY)
127 bsd_flags |= O_NOCTTY;
128 if (l_flags & LINUX_O_DIRECT)
129 bsd_flags |= O_DIRECT;
130 if (l_flags & LINUX_O_NOFOLLOW)
131 bsd_flags |= O_NOFOLLOW;
132 if (l_flags & LINUX_O_DIRECTORY)
133 bsd_flags |= O_DIRECTORY;
134 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */
135
136 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode);
137
138 if (!error) {
139 fd = td->td_retval[0];
140 /*
141 * XXX In between kern_open() and fget(), another process
142 * having the same filedesc could use that fd without
143 * checking below.
144 */
145 error = fget(td, fd, CAP_IOCTL, &fp);
146 if (!error) {
147 sx_slock(&proctree_lock);
148 PROC_LOCK(p);
149 if (!(bsd_flags & O_NOCTTY) &&
150 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
151 PROC_UNLOCK(p);
152 sx_unlock(&proctree_lock);
153 if (fp->f_type == DTYPE_VNODE)
154 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0,
155 td->td_ucred, td);
156 } else {
157 PROC_UNLOCK(p);
158 sx_sunlock(&proctree_lock);
159 }
160 fdrop(fp, td);
161 /*
162 * XXX as above, fdrop()/kern_close() pair is racy.
163 */
164 if (error)
165 kern_close(td, fd);
166 }
167 }
168
169 #ifdef DEBUG
170 if (ldebug(open))
171 printf(LMSG("open returns error %d"), error);
172 #endif
173 LFREEPATH(path);
174 return (error);
175 }
176
177 int
178 linux_openat(struct thread *td, struct linux_openat_args *args)
179 {
180 char *path;
181 int dfd;
182
183 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
184 if (args->flags & LINUX_O_CREAT)
185 LCONVPATH_AT(td, args->filename, &path, 1, dfd);
186 else
187 LCONVPATH_AT(td, args->filename, &path, 0, dfd);
188 #ifdef DEBUG
189 if (ldebug(openat))
190 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd,
191 path, args->flags, args->mode);
192 #endif
193 return (linux_common_open(td, dfd, path, args->flags, args->mode));
194 }
195
196 int
197 linux_open(struct thread *td, struct linux_open_args *args)
198 {
199 char *path;
200
201 if (args->flags & LINUX_O_CREAT)
202 LCONVPATHCREAT(td, args->path, &path);
203 else
204 LCONVPATHEXIST(td, args->path, &path);
205
206 #ifdef DEBUG
207 if (ldebug(open))
208 printf(ARGS(open, "%s, 0x%x, 0x%x"),
209 path, args->flags, args->mode);
210 #endif
211
212 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode));
213 }
214
215 int
216 linux_lseek(struct thread *td, struct linux_lseek_args *args)
217 {
218
219 struct lseek_args /* {
220 int fd;
221 int pad;
222 off_t offset;
223 int whence;
224 } */ tmp_args;
225 int error;
226
227 #ifdef DEBUG
228 if (ldebug(lseek))
229 printf(ARGS(lseek, "%d, %ld, %d"),
230 args->fdes, (long)args->off, args->whence);
231 #endif
232 tmp_args.fd = args->fdes;
233 tmp_args.offset = (off_t)args->off;
234 tmp_args.whence = args->whence;
235 error = sys_lseek(td, &tmp_args);
236 return error;
237 }
238
239 int
240 linux_llseek(struct thread *td, struct linux_llseek_args *args)
241 {
242 struct lseek_args bsd_args;
243 int error;
244 off_t off;
245
246 #ifdef DEBUG
247 if (ldebug(llseek))
248 printf(ARGS(llseek, "%d, %d:%d, %d"),
249 args->fd, args->ohigh, args->olow, args->whence);
250 #endif
251 off = (args->olow) | (((off_t) args->ohigh) << 32);
252
253 bsd_args.fd = args->fd;
254 bsd_args.offset = off;
255 bsd_args.whence = args->whence;
256
257 if ((error = sys_lseek(td, &bsd_args)))
258 return error;
259
260 if ((error = copyout(td->td_retval, args->res, sizeof (off_t))))
261 return error;
262
263 td->td_retval[0] = 0;
264 return 0;
265 }
266
267 int
268 linux_readdir(struct thread *td, struct linux_readdir_args *args)
269 {
270 struct linux_getdents_args lda;
271
272 lda.fd = args->fd;
273 lda.dent = args->dent;
274 lda.count = 1;
275 return linux_getdents(td, &lda);
276 }
277
278 /*
279 * Note that linux_getdents(2) and linux_getdents64(2) have the same
280 * arguments. They only differ in the definition of struct dirent they
281 * operate on. We use this to common the code, with the exception of
282 * accessing struct dirent. Note that linux_readdir(2) is implemented
283 * by means of linux_getdents(2). In this case we never operate on
284 * struct dirent64 and thus don't need to handle it...
285 */
286
287 struct l_dirent {
288 l_ulong d_ino;
289 l_off_t d_off;
290 l_ushort d_reclen;
291 char d_name[LINUX_NAME_MAX + 1];
292 };
293
294 struct l_dirent64 {
295 uint64_t d_ino;
296 int64_t d_off;
297 l_ushort d_reclen;
298 u_char d_type;
299 char d_name[LINUX_NAME_MAX + 1];
300 };
301
302 /*
303 * Linux uses the last byte in the dirent buffer to store d_type,
304 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes.
305 */
306 #define LINUX_RECLEN(namlen) \
307 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \
308 sizeof(l_ulong))
309
310 #define LINUX_RECLEN64(namlen) \
311 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \
312 sizeof(uint64_t))
313
314 #define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \
315 LINUX_RECLEN64(LINUX_NAME_MAX))
316 #define LINUX_DIRBLKSIZ 512
317
318 static int
319 getdents_common(struct thread *td, struct linux_getdents64_args *args,
320 int is64bit)
321 {
322 struct dirent *bdp;
323 struct vnode *vp;
324 caddr_t inp, buf; /* BSD-format */
325 int len, reclen; /* BSD-format */
326 caddr_t outp; /* Linux-format */
327 int resid, linuxreclen=0; /* Linux-format */
328 caddr_t lbuf; /* Linux-format */
329 struct file *fp;
330 struct uio auio;
331 struct iovec aiov;
332 off_t off;
333 struct l_dirent *linux_dirent;
334 struct l_dirent64 *linux_dirent64;
335 int buflen, error, eofflag, nbytes, justone;
336 u_long *cookies = NULL, *cookiep;
337 int ncookies, vfslocked;
338
339 nbytes = args->count;
340 if (nbytes == 1) {
341 /* readdir(2) case. Always struct dirent. */
342 if (is64bit)
343 return (EINVAL);
344 nbytes = sizeof(*linux_dirent);
345 justone = 1;
346 } else
347 justone = 0;
348
349 if ((error = getvnode(td->td_proc->p_fd, args->fd, CAP_READ, &fp)) != 0)
350 return (error);
351
352 if ((fp->f_flag & FREAD) == 0) {
353 fdrop(fp, td);
354 return (EBADF);
355 }
356
357 vp = fp->f_vnode;
358 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
359 if (vp->v_type != VDIR) {
360 VFS_UNLOCK_GIANT(vfslocked);
361 fdrop(fp, td);
362 return (EINVAL);
363 }
364
365 off = fp->f_offset;
366
367 buflen = max(LINUX_DIRBLKSIZ, nbytes);
368 buflen = min(buflen, MAXBSIZE);
369 buf = malloc(buflen, M_TEMP, M_WAITOK);
370 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO);
371 vn_lock(vp, LK_SHARED | LK_RETRY);
372
373 aiov.iov_base = buf;
374 aiov.iov_len = buflen;
375 auio.uio_iov = &aiov;
376 auio.uio_iovcnt = 1;
377 auio.uio_rw = UIO_READ;
378 auio.uio_segflg = UIO_SYSSPACE;
379 auio.uio_td = td;
380 auio.uio_resid = buflen;
381 auio.uio_offset = off;
382
383 if (cookies) {
384 free(cookies, M_TEMP);
385 cookies = NULL;
386 }
387
388 #ifdef MAC
389 /*
390 * Do directory search MAC check using non-cached credentials.
391 */
392 if ((error = mac_vnode_check_readdir(td->td_ucred, vp)))
393 goto out;
394 #endif /* MAC */
395 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
396 &cookies)))
397 goto out;
398
399 inp = buf;
400 outp = (caddr_t)args->dirent;
401 resid = nbytes;
402 if ((len = buflen - auio.uio_resid) <= 0)
403 goto eof;
404
405 cookiep = cookies;
406
407 if (cookies) {
408 /*
409 * When using cookies, the vfs has the option of reading from
410 * a different offset than that supplied (UFS truncates the
411 * offset to a block boundary to make sure that it never reads
412 * partway through a directory entry, even if the directory
413 * has been compacted).
414 */
415 while (len > 0 && ncookies > 0 && *cookiep <= off) {
416 bdp = (struct dirent *) inp;
417 len -= bdp->d_reclen;
418 inp += bdp->d_reclen;
419 cookiep++;
420 ncookies--;
421 }
422 }
423
424 while (len > 0) {
425 if (cookiep && ncookies == 0)
426 break;
427 bdp = (struct dirent *) inp;
428 reclen = bdp->d_reclen;
429 if (reclen & 3) {
430 error = EFAULT;
431 goto out;
432 }
433
434 if (bdp->d_fileno == 0) {
435 inp += reclen;
436 if (cookiep) {
437 off = *cookiep++;
438 ncookies--;
439 } else
440 off += reclen;
441
442 len -= reclen;
443 continue;
444 }
445
446 linuxreclen = (is64bit)
447 ? LINUX_RECLEN64(bdp->d_namlen)
448 : LINUX_RECLEN(bdp->d_namlen);
449
450 if (reclen > len || resid < linuxreclen) {
451 outp++;
452 break;
453 }
454
455 if (justone) {
456 /* readdir(2) case. */
457 linux_dirent = (struct l_dirent*)lbuf;
458 linux_dirent->d_ino = bdp->d_fileno;
459 linux_dirent->d_off = (l_off_t)linuxreclen;
460 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen;
461 strlcpy(linux_dirent->d_name, bdp->d_name,
462 linuxreclen - offsetof(struct l_dirent, d_name));
463 error = copyout(linux_dirent, outp, linuxreclen);
464 }
465 if (is64bit) {
466 linux_dirent64 = (struct l_dirent64*)lbuf;
467 linux_dirent64->d_ino = bdp->d_fileno;
468 linux_dirent64->d_off = (cookiep)
469 ? (l_off_t)*cookiep
470 : (l_off_t)(off + reclen);
471 linux_dirent64->d_reclen = (l_ushort)linuxreclen;
472 linux_dirent64->d_type = bdp->d_type;
473 strlcpy(linux_dirent64->d_name, bdp->d_name,
474 linuxreclen - offsetof(struct l_dirent64, d_name));
475 error = copyout(linux_dirent64, outp, linuxreclen);
476 } else if (!justone) {
477 linux_dirent = (struct l_dirent*)lbuf;
478 linux_dirent->d_ino = bdp->d_fileno;
479 linux_dirent->d_off = (cookiep)
480 ? (l_off_t)*cookiep
481 : (l_off_t)(off + reclen);
482 linux_dirent->d_reclen = (l_ushort)linuxreclen;
483 /*
484 * Copy d_type to last byte of l_dirent buffer
485 */
486 lbuf[linuxreclen-1] = bdp->d_type;
487 strlcpy(linux_dirent->d_name, bdp->d_name,
488 linuxreclen - offsetof(struct l_dirent, d_name)-1);
489 error = copyout(linux_dirent, outp, linuxreclen);
490 }
491
492 if (error)
493 goto out;
494
495 inp += reclen;
496 if (cookiep) {
497 off = *cookiep++;
498 ncookies--;
499 } else
500 off += reclen;
501
502 outp += linuxreclen;
503 resid -= linuxreclen;
504 len -= reclen;
505 if (justone)
506 break;
507 }
508
509 if (outp == (caddr_t)args->dirent) {
510 nbytes = resid;
511 goto eof;
512 }
513
514 fp->f_offset = off;
515 if (justone)
516 nbytes = resid + linuxreclen;
517
518 eof:
519 td->td_retval[0] = nbytes - resid;
520
521 out:
522 if (cookies)
523 free(cookies, M_TEMP);
524
525 VOP_UNLOCK(vp, 0);
526 VFS_UNLOCK_GIANT(vfslocked);
527 fdrop(fp, td);
528 free(buf, M_TEMP);
529 free(lbuf, M_TEMP);
530 return (error);
531 }
532
533 int
534 linux_getdents(struct thread *td, struct linux_getdents_args *args)
535 {
536
537 #ifdef DEBUG
538 if (ldebug(getdents))
539 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count);
540 #endif
541
542 return (getdents_common(td, (struct linux_getdents64_args*)args, 0));
543 }
544
545 int
546 linux_getdents64(struct thread *td, struct linux_getdents64_args *args)
547 {
548
549 #ifdef DEBUG
550 if (ldebug(getdents64))
551 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count);
552 #endif
553
554 return (getdents_common(td, args, 1));
555 }
556
557 /*
558 * These exist mainly for hooks for doing /compat/linux translation.
559 */
560
561 int
562 linux_access(struct thread *td, struct linux_access_args *args)
563 {
564 char *path;
565 int error;
566
567 /* linux convention */
568 if (args->flags & ~(F_OK | X_OK | W_OK | R_OK))
569 return (EINVAL);
570
571 LCONVPATHEXIST(td, args->path, &path);
572
573 #ifdef DEBUG
574 if (ldebug(access))
575 printf(ARGS(access, "%s, %d"), path, args->flags);
576 #endif
577 error = kern_access(td, path, UIO_SYSSPACE, args->flags);
578 LFREEPATH(path);
579
580 return (error);
581 }
582
583 int
584 linux_faccessat(struct thread *td, struct linux_faccessat_args *args)
585 {
586 char *path;
587 int error, dfd;
588
589 /* linux convention */
590 if (args->mode & ~(F_OK | X_OK | W_OK | R_OK))
591 return (EINVAL);
592
593 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
594 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
595
596 #ifdef DEBUG
597 if (ldebug(access))
598 printf(ARGS(access, "%s, %d"), path, args->mode);
599 #endif
600
601 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0 /* XXX */,
602 args->mode);
603 LFREEPATH(path);
604
605 return (error);
606 }
607
608 int
609 linux_unlink(struct thread *td, struct linux_unlink_args *args)
610 {
611 char *path;
612 int error;
613 struct stat st;
614
615 LCONVPATHEXIST(td, args->path, &path);
616
617 #ifdef DEBUG
618 if (ldebug(unlink))
619 printf(ARGS(unlink, "%s"), path);
620 #endif
621
622 error = kern_unlink(td, path, UIO_SYSSPACE);
623 if (error == EPERM)
624 /* Introduce POSIX noncompliant behaviour of Linux */
625 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0)
626 if (S_ISDIR(st.st_mode))
627 error = EISDIR;
628 LFREEPATH(path);
629 return (error);
630 }
631
632 int
633 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args)
634 {
635 char *path;
636 int error, dfd;
637 struct stat st;
638
639 if (args->flag & ~LINUX_AT_REMOVEDIR)
640 return (EINVAL);
641
642 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
643 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
644
645 #ifdef DEBUG
646 if (ldebug(unlinkat))
647 printf(ARGS(unlinkat, "%s"), path);
648 #endif
649
650 if (args->flag & LINUX_AT_REMOVEDIR)
651 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE);
652 else
653 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0);
654 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) {
655 /* Introduce POSIX noncompliant behaviour of Linux */
656 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path,
657 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode))
658 error = EISDIR;
659 }
660 LFREEPATH(path);
661 return (error);
662 }
663 int
664 linux_chdir(struct thread *td, struct linux_chdir_args *args)
665 {
666 char *path;
667 int error;
668
669 LCONVPATHEXIST(td, args->path, &path);
670
671 #ifdef DEBUG
672 if (ldebug(chdir))
673 printf(ARGS(chdir, "%s"), path);
674 #endif
675 error = kern_chdir(td, path, UIO_SYSSPACE);
676 LFREEPATH(path);
677 return (error);
678 }
679
680 int
681 linux_chmod(struct thread *td, struct linux_chmod_args *args)
682 {
683 char *path;
684 int error;
685
686 LCONVPATHEXIST(td, args->path, &path);
687
688 #ifdef DEBUG
689 if (ldebug(chmod))
690 printf(ARGS(chmod, "%s, %d"), path, args->mode);
691 #endif
692 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode);
693 LFREEPATH(path);
694 return (error);
695 }
696
697 int
698 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args)
699 {
700 char *path;
701 int error, dfd;
702
703 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
704 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
705
706 #ifdef DEBUG
707 if (ldebug(fchmodat))
708 printf(ARGS(fchmodat, "%s, %d"), path, args->mode);
709 #endif
710
711 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0);
712 LFREEPATH(path);
713 return (error);
714 }
715
716 int
717 linux_mkdir(struct thread *td, struct linux_mkdir_args *args)
718 {
719 char *path;
720 int error;
721
722 LCONVPATHCREAT(td, args->path, &path);
723
724 #ifdef DEBUG
725 if (ldebug(mkdir))
726 printf(ARGS(mkdir, "%s, %d"), path, args->mode);
727 #endif
728 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode);
729 LFREEPATH(path);
730 return (error);
731 }
732
733 int
734 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args)
735 {
736 char *path;
737 int error, dfd;
738
739 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
740 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd);
741
742 #ifdef DEBUG
743 if (ldebug(mkdirat))
744 printf(ARGS(mkdirat, "%s, %d"), path, args->mode);
745 #endif
746 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode);
747 LFREEPATH(path);
748 return (error);
749 }
750
751 int
752 linux_rmdir(struct thread *td, struct linux_rmdir_args *args)
753 {
754 char *path;
755 int error;
756
757 LCONVPATHEXIST(td, args->path, &path);
758
759 #ifdef DEBUG
760 if (ldebug(rmdir))
761 printf(ARGS(rmdir, "%s"), path);
762 #endif
763 error = kern_rmdir(td, path, UIO_SYSSPACE);
764 LFREEPATH(path);
765 return (error);
766 }
767
768 int
769 linux_rename(struct thread *td, struct linux_rename_args *args)
770 {
771 char *from, *to;
772 int error;
773
774 LCONVPATHEXIST(td, args->from, &from);
775 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
776 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
777 if (to == NULL) {
778 LFREEPATH(from);
779 return (error);
780 }
781
782 #ifdef DEBUG
783 if (ldebug(rename))
784 printf(ARGS(rename, "%s, %s"), from, to);
785 #endif
786 error = kern_rename(td, from, to, UIO_SYSSPACE);
787 LFREEPATH(from);
788 LFREEPATH(to);
789 return (error);
790 }
791
792 int
793 linux_renameat(struct thread *td, struct linux_renameat_args *args)
794 {
795 char *from, *to;
796 int error, olddfd, newdfd;
797
798 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
799 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
800 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd);
801 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
802 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
803 if (to == NULL) {
804 LFREEPATH(from);
805 return (error);
806 }
807
808 #ifdef DEBUG
809 if (ldebug(renameat))
810 printf(ARGS(renameat, "%s, %s"), from, to);
811 #endif
812 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE);
813 LFREEPATH(from);
814 LFREEPATH(to);
815 return (error);
816 }
817
818 int
819 linux_symlink(struct thread *td, struct linux_symlink_args *args)
820 {
821 char *path, *to;
822 int error;
823
824 LCONVPATHEXIST(td, args->path, &path);
825 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
826 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
827 if (to == NULL) {
828 LFREEPATH(path);
829 return (error);
830 }
831
832 #ifdef DEBUG
833 if (ldebug(symlink))
834 printf(ARGS(symlink, "%s, %s"), path, to);
835 #endif
836 error = kern_symlink(td, path, to, UIO_SYSSPACE);
837 LFREEPATH(path);
838 LFREEPATH(to);
839 return (error);
840 }
841
842 int
843 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args)
844 {
845 char *path, *to;
846 int error, dfd;
847
848 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
849 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd);
850 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
851 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd);
852 if (to == NULL) {
853 LFREEPATH(path);
854 return (error);
855 }
856
857 #ifdef DEBUG
858 if (ldebug(symlinkat))
859 printf(ARGS(symlinkat, "%s, %s"), path, to);
860 #endif
861
862 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE);
863 LFREEPATH(path);
864 LFREEPATH(to);
865 return (error);
866 }
867
868 int
869 linux_readlink(struct thread *td, struct linux_readlink_args *args)
870 {
871 char *name;
872 int error;
873
874 LCONVPATHEXIST(td, args->name, &name);
875
876 #ifdef DEBUG
877 if (ldebug(readlink))
878 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf,
879 args->count);
880 #endif
881 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE,
882 args->count);
883 LFREEPATH(name);
884 return (error);
885 }
886
887 int
888 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args)
889 {
890 char *name;
891 int error, dfd;
892
893 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
894 LCONVPATHEXIST_AT(td, args->path, &name, dfd);
895
896 #ifdef DEBUG
897 if (ldebug(readlinkat))
898 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf,
899 args->bufsiz);
900 #endif
901
902 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf,
903 UIO_USERSPACE, args->bufsiz);
904 LFREEPATH(name);
905 return (error);
906 }
907
908 int
909 linux_truncate(struct thread *td, struct linux_truncate_args *args)
910 {
911 char *path;
912 int error;
913
914 LCONVPATHEXIST(td, args->path, &path);
915
916 #ifdef DEBUG
917 if (ldebug(truncate))
918 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length);
919 #endif
920
921 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
922 LFREEPATH(path);
923 return (error);
924 }
925
926 int
927 linux_truncate64(struct thread *td, struct linux_truncate64_args *args)
928 {
929 char *path;
930 int error;
931
932 LCONVPATHEXIST(td, args->path, &path);
933
934 #ifdef DEBUG
935 if (ldebug(truncate64))
936 printf(ARGS(truncate64, "%s, %jd"), path, args->length);
937 #endif
938
939 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
940 LFREEPATH(path);
941 return (error);
942 }
943 int
944 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args)
945 {
946 struct ftruncate_args /* {
947 int fd;
948 int pad;
949 off_t length;
950 } */ nuap;
951
952 nuap.fd = args->fd;
953 nuap.length = args->length;
954 return (sys_ftruncate(td, &nuap));
955 }
956
957 int
958 linux_link(struct thread *td, struct linux_link_args *args)
959 {
960 char *path, *to;
961 int error;
962
963 LCONVPATHEXIST(td, args->path, &path);
964 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
965 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
966 if (to == NULL) {
967 LFREEPATH(path);
968 return (error);
969 }
970
971 #ifdef DEBUG
972 if (ldebug(link))
973 printf(ARGS(link, "%s, %s"), path, to);
974 #endif
975 error = kern_link(td, path, to, UIO_SYSSPACE);
976 LFREEPATH(path);
977 LFREEPATH(to);
978 return (error);
979 }
980
981 int
982 linux_linkat(struct thread *td, struct linux_linkat_args *args)
983 {
984 char *path, *to;
985 int error, olddfd, newdfd;
986
987 /*
988 * They really introduced flags argument which is forbidden to
989 * use.
990 */
991 if (args->flags != 0)
992 return (EINVAL);
993
994 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
995 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
996 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd);
997 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
998 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
999 if (to == NULL) {
1000 LFREEPATH(path);
1001 return (error);
1002 }
1003
1004 #ifdef DEBUG
1005 if (ldebug(linkat))
1006 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path,
1007 args->newdfd, to, args->flags);
1008 #endif
1009
1010 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, FOLLOW);
1011 LFREEPATH(path);
1012 LFREEPATH(to);
1013 return (error);
1014 }
1015
1016 int
1017 linux_fdatasync(td, uap)
1018 struct thread *td;
1019 struct linux_fdatasync_args *uap;
1020 {
1021 struct fsync_args bsd;
1022
1023 bsd.fd = uap->fd;
1024 return sys_fsync(td, &bsd);
1025 }
1026
1027 int
1028 linux_pread(td, uap)
1029 struct thread *td;
1030 struct linux_pread_args *uap;
1031 {
1032 struct pread_args bsd;
1033 struct vnode *vp;
1034 int error;
1035
1036 bsd.fd = uap->fd;
1037 bsd.buf = uap->buf;
1038 bsd.nbyte = uap->nbyte;
1039 bsd.offset = uap->offset;
1040
1041 error = sys_pread(td, &bsd);
1042
1043 if (error == 0) {
1044 /* This seems to violate POSIX but linux does it */
1045 if ((error = fgetvp(td, uap->fd, CAP_READ, &vp)) != 0)
1046 return (error);
1047 if (vp->v_type == VDIR) {
1048 vrele(vp);
1049 return (EISDIR);
1050 }
1051 vrele(vp);
1052 }
1053
1054 return (error);
1055 }
1056
1057 int
1058 linux_pwrite(td, uap)
1059 struct thread *td;
1060 struct linux_pwrite_args *uap;
1061 {
1062 struct pwrite_args bsd;
1063
1064 bsd.fd = uap->fd;
1065 bsd.buf = uap->buf;
1066 bsd.nbyte = uap->nbyte;
1067 bsd.offset = uap->offset;
1068 return sys_pwrite(td, &bsd);
1069 }
1070
1071 int
1072 linux_mount(struct thread *td, struct linux_mount_args *args)
1073 {
1074 struct ufs_args ufs;
1075 char fstypename[MFSNAMELEN];
1076 char mntonname[MNAMELEN], mntfromname[MNAMELEN];
1077 int error;
1078 int fsflags;
1079 void *fsdata;
1080
1081 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1,
1082 NULL);
1083 if (error)
1084 return (error);
1085 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL);
1086 if (error)
1087 return (error);
1088 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL);
1089 if (error)
1090 return (error);
1091
1092 #ifdef DEBUG
1093 if (ldebug(mount))
1094 printf(ARGS(mount, "%s, %s, %s"),
1095 fstypename, mntfromname, mntonname);
1096 #endif
1097
1098 if (strcmp(fstypename, "ext2") == 0) {
1099 strcpy(fstypename, "ext2fs");
1100 fsdata = &ufs;
1101 ufs.fspec = mntfromname;
1102 #define DEFAULT_ROOTID -2
1103 ufs.export.ex_root = DEFAULT_ROOTID;
1104 ufs.export.ex_flags =
1105 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0;
1106 } else if (strcmp(fstypename, "proc") == 0) {
1107 strcpy(fstypename, "linprocfs");
1108 fsdata = NULL;
1109 } else if (strcmp(fstypename, "vfat") == 0) {
1110 strcpy(fstypename, "msdosfs");
1111 fsdata = NULL;
1112 } else {
1113 return (ENODEV);
1114 }
1115
1116 fsflags = 0;
1117
1118 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) {
1119 /*
1120 * Linux SYNC flag is not included; the closest equivalent
1121 * FreeBSD has is !ASYNC, which is our default.
1122 */
1123 if (args->rwflag & LINUX_MS_RDONLY)
1124 fsflags |= MNT_RDONLY;
1125 if (args->rwflag & LINUX_MS_NOSUID)
1126 fsflags |= MNT_NOSUID;
1127 if (args->rwflag & LINUX_MS_NOEXEC)
1128 fsflags |= MNT_NOEXEC;
1129 if (args->rwflag & LINUX_MS_REMOUNT)
1130 fsflags |= MNT_UPDATE;
1131 }
1132
1133 if (strcmp(fstypename, "linprocfs") == 0) {
1134 error = kernel_vmount(fsflags,
1135 "fstype", fstypename,
1136 "fspath", mntonname,
1137 NULL);
1138 } else if (strcmp(fstypename, "msdosfs") == 0) {
1139 error = kernel_vmount(fsflags,
1140 "fstype", fstypename,
1141 "fspath", mntonname,
1142 "from", mntfromname,
1143 NULL);
1144 } else
1145 error = EOPNOTSUPP;
1146 return (error);
1147 }
1148
1149 int
1150 linux_oldumount(struct thread *td, struct linux_oldumount_args *args)
1151 {
1152 struct linux_umount_args args2;
1153
1154 args2.path = args->path;
1155 args2.flags = 0;
1156 return (linux_umount(td, &args2));
1157 }
1158
1159 int
1160 linux_umount(struct thread *td, struct linux_umount_args *args)
1161 {
1162 struct unmount_args bsd;
1163
1164 bsd.path = args->path;
1165 bsd.flags = args->flags; /* XXX correct? */
1166 return (sys_unmount(td, &bsd));
1167 }
1168
1169 /*
1170 * fcntl family of syscalls
1171 */
1172
1173 struct l_flock {
1174 l_short l_type;
1175 l_short l_whence;
1176 l_off_t l_start;
1177 l_off_t l_len;
1178 l_pid_t l_pid;
1179 }
1180 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1181 __packed
1182 #endif
1183 ;
1184
1185 static void
1186 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock)
1187 {
1188 switch (linux_flock->l_type) {
1189 case LINUX_F_RDLCK:
1190 bsd_flock->l_type = F_RDLCK;
1191 break;
1192 case LINUX_F_WRLCK:
1193 bsd_flock->l_type = F_WRLCK;
1194 break;
1195 case LINUX_F_UNLCK:
1196 bsd_flock->l_type = F_UNLCK;
1197 break;
1198 default:
1199 bsd_flock->l_type = -1;
1200 break;
1201 }
1202 bsd_flock->l_whence = linux_flock->l_whence;
1203 bsd_flock->l_start = (off_t)linux_flock->l_start;
1204 bsd_flock->l_len = (off_t)linux_flock->l_len;
1205 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1206 bsd_flock->l_sysid = 0;
1207 }
1208
1209 static void
1210 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock)
1211 {
1212 switch (bsd_flock->l_type) {
1213 case F_RDLCK:
1214 linux_flock->l_type = LINUX_F_RDLCK;
1215 break;
1216 case F_WRLCK:
1217 linux_flock->l_type = LINUX_F_WRLCK;
1218 break;
1219 case F_UNLCK:
1220 linux_flock->l_type = LINUX_F_UNLCK;
1221 break;
1222 }
1223 linux_flock->l_whence = bsd_flock->l_whence;
1224 linux_flock->l_start = (l_off_t)bsd_flock->l_start;
1225 linux_flock->l_len = (l_off_t)bsd_flock->l_len;
1226 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1227 }
1228
1229 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1230 struct l_flock64 {
1231 l_short l_type;
1232 l_short l_whence;
1233 l_loff_t l_start;
1234 l_loff_t l_len;
1235 l_pid_t l_pid;
1236 }
1237 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1238 __packed
1239 #endif
1240 ;
1241
1242 static void
1243 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock)
1244 {
1245 switch (linux_flock->l_type) {
1246 case LINUX_F_RDLCK:
1247 bsd_flock->l_type = F_RDLCK;
1248 break;
1249 case LINUX_F_WRLCK:
1250 bsd_flock->l_type = F_WRLCK;
1251 break;
1252 case LINUX_F_UNLCK:
1253 bsd_flock->l_type = F_UNLCK;
1254 break;
1255 default:
1256 bsd_flock->l_type = -1;
1257 break;
1258 }
1259 bsd_flock->l_whence = linux_flock->l_whence;
1260 bsd_flock->l_start = (off_t)linux_flock->l_start;
1261 bsd_flock->l_len = (off_t)linux_flock->l_len;
1262 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1263 bsd_flock->l_sysid = 0;
1264 }
1265
1266 static void
1267 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock)
1268 {
1269 switch (bsd_flock->l_type) {
1270 case F_RDLCK:
1271 linux_flock->l_type = LINUX_F_RDLCK;
1272 break;
1273 case F_WRLCK:
1274 linux_flock->l_type = LINUX_F_WRLCK;
1275 break;
1276 case F_UNLCK:
1277 linux_flock->l_type = LINUX_F_UNLCK;
1278 break;
1279 }
1280 linux_flock->l_whence = bsd_flock->l_whence;
1281 linux_flock->l_start = (l_loff_t)bsd_flock->l_start;
1282 linux_flock->l_len = (l_loff_t)bsd_flock->l_len;
1283 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1284 }
1285 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1286
1287 static int
1288 fcntl_common(struct thread *td, struct linux_fcntl64_args *args)
1289 {
1290 struct l_flock linux_flock;
1291 struct flock bsd_flock;
1292 struct file *fp;
1293 long arg;
1294 int error, result;
1295
1296 switch (args->cmd) {
1297 case LINUX_F_DUPFD:
1298 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg));
1299
1300 case LINUX_F_GETFD:
1301 return (kern_fcntl(td, args->fd, F_GETFD, 0));
1302
1303 case LINUX_F_SETFD:
1304 return (kern_fcntl(td, args->fd, F_SETFD, args->arg));
1305
1306 case LINUX_F_GETFL:
1307 error = kern_fcntl(td, args->fd, F_GETFL, 0);
1308 result = td->td_retval[0];
1309 td->td_retval[0] = 0;
1310 if (result & O_RDONLY)
1311 td->td_retval[0] |= LINUX_O_RDONLY;
1312 if (result & O_WRONLY)
1313 td->td_retval[0] |= LINUX_O_WRONLY;
1314 if (result & O_RDWR)
1315 td->td_retval[0] |= LINUX_O_RDWR;
1316 if (result & O_NDELAY)
1317 td->td_retval[0] |= LINUX_O_NONBLOCK;
1318 if (result & O_APPEND)
1319 td->td_retval[0] |= LINUX_O_APPEND;
1320 if (result & O_FSYNC)
1321 td->td_retval[0] |= LINUX_O_SYNC;
1322 if (result & O_ASYNC)
1323 td->td_retval[0] |= LINUX_FASYNC;
1324 #ifdef LINUX_O_NOFOLLOW
1325 if (result & O_NOFOLLOW)
1326 td->td_retval[0] |= LINUX_O_NOFOLLOW;
1327 #endif
1328 #ifdef LINUX_O_DIRECT
1329 if (result & O_DIRECT)
1330 td->td_retval[0] |= LINUX_O_DIRECT;
1331 #endif
1332 return (error);
1333
1334 case LINUX_F_SETFL:
1335 arg = 0;
1336 if (args->arg & LINUX_O_NDELAY)
1337 arg |= O_NONBLOCK;
1338 if (args->arg & LINUX_O_APPEND)
1339 arg |= O_APPEND;
1340 if (args->arg & LINUX_O_SYNC)
1341 arg |= O_FSYNC;
1342 if (args->arg & LINUX_FASYNC)
1343 arg |= O_ASYNC;
1344 #ifdef LINUX_O_NOFOLLOW
1345 if (args->arg & LINUX_O_NOFOLLOW)
1346 arg |= O_NOFOLLOW;
1347 #endif
1348 #ifdef LINUX_O_DIRECT
1349 if (args->arg & LINUX_O_DIRECT)
1350 arg |= O_DIRECT;
1351 #endif
1352 return (kern_fcntl(td, args->fd, F_SETFL, arg));
1353
1354 case LINUX_F_GETLK:
1355 error = copyin((void *)args->arg, &linux_flock,
1356 sizeof(linux_flock));
1357 if (error)
1358 return (error);
1359 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1360 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1361 if (error)
1362 return (error);
1363 bsd_to_linux_flock(&bsd_flock, &linux_flock);
1364 return (copyout(&linux_flock, (void *)args->arg,
1365 sizeof(linux_flock)));
1366
1367 case LINUX_F_SETLK:
1368 error = copyin((void *)args->arg, &linux_flock,
1369 sizeof(linux_flock));
1370 if (error)
1371 return (error);
1372 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1373 return (kern_fcntl(td, args->fd, F_SETLK,
1374 (intptr_t)&bsd_flock));
1375
1376 case LINUX_F_SETLKW:
1377 error = copyin((void *)args->arg, &linux_flock,
1378 sizeof(linux_flock));
1379 if (error)
1380 return (error);
1381 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1382 return (kern_fcntl(td, args->fd, F_SETLKW,
1383 (intptr_t)&bsd_flock));
1384
1385 case LINUX_F_GETOWN:
1386 return (kern_fcntl(td, args->fd, F_GETOWN, 0));
1387
1388 case LINUX_F_SETOWN:
1389 /*
1390 * XXX some Linux applications depend on F_SETOWN having no
1391 * significant effect for pipes (SIGIO is not delivered for
1392 * pipes under Linux-2.2.35 at least).
1393 */
1394 error = fget(td, args->fd, CAP_FCNTL, &fp);
1395 if (error)
1396 return (error);
1397 if (fp->f_type == DTYPE_PIPE) {
1398 fdrop(fp, td);
1399 return (EINVAL);
1400 }
1401 fdrop(fp, td);
1402
1403 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg));
1404 }
1405
1406 return (EINVAL);
1407 }
1408
1409 int
1410 linux_fcntl(struct thread *td, struct linux_fcntl_args *args)
1411 {
1412 struct linux_fcntl64_args args64;
1413
1414 #ifdef DEBUG
1415 if (ldebug(fcntl))
1416 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd);
1417 #endif
1418
1419 args64.fd = args->fd;
1420 args64.cmd = args->cmd;
1421 args64.arg = args->arg;
1422 return (fcntl_common(td, &args64));
1423 }
1424
1425 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1426 int
1427 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args)
1428 {
1429 struct l_flock64 linux_flock;
1430 struct flock bsd_flock;
1431 int error;
1432
1433 #ifdef DEBUG
1434 if (ldebug(fcntl64))
1435 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd);
1436 #endif
1437
1438 switch (args->cmd) {
1439 case LINUX_F_GETLK64:
1440 error = copyin((void *)args->arg, &linux_flock,
1441 sizeof(linux_flock));
1442 if (error)
1443 return (error);
1444 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1445 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1446 if (error)
1447 return (error);
1448 bsd_to_linux_flock64(&bsd_flock, &linux_flock);
1449 return (copyout(&linux_flock, (void *)args->arg,
1450 sizeof(linux_flock)));
1451
1452 case LINUX_F_SETLK64:
1453 error = copyin((void *)args->arg, &linux_flock,
1454 sizeof(linux_flock));
1455 if (error)
1456 return (error);
1457 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1458 return (kern_fcntl(td, args->fd, F_SETLK,
1459 (intptr_t)&bsd_flock));
1460
1461 case LINUX_F_SETLKW64:
1462 error = copyin((void *)args->arg, &linux_flock,
1463 sizeof(linux_flock));
1464 if (error)
1465 return (error);
1466 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1467 return (kern_fcntl(td, args->fd, F_SETLKW,
1468 (intptr_t)&bsd_flock));
1469 }
1470
1471 return (fcntl_common(td, args));
1472 }
1473 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1474
1475 int
1476 linux_chown(struct thread *td, struct linux_chown_args *args)
1477 {
1478 char *path;
1479 int error;
1480
1481 LCONVPATHEXIST(td, args->path, &path);
1482
1483 #ifdef DEBUG
1484 if (ldebug(chown))
1485 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid);
1486 #endif
1487 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid);
1488 LFREEPATH(path);
1489 return (error);
1490 }
1491
1492 int
1493 linux_fchownat(struct thread *td, struct linux_fchownat_args *args)
1494 {
1495 char *path;
1496 int error, dfd, follow;
1497
1498 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
1499 return (EINVAL);
1500
1501 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1502 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
1503
1504 #ifdef DEBUG
1505 if (ldebug(fchownat))
1506 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid);
1507 #endif
1508
1509 follow = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 :
1510 AT_SYMLINK_NOFOLLOW;
1511 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid,
1512 follow);
1513 LFREEPATH(path);
1514 return (error);
1515 }
1516
1517 int
1518 linux_lchown(struct thread *td, struct linux_lchown_args *args)
1519 {
1520 char *path;
1521 int error;
1522
1523 LCONVPATHEXIST(td, args->path, &path);
1524
1525 #ifdef DEBUG
1526 if (ldebug(lchown))
1527 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid);
1528 #endif
1529 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid);
1530 LFREEPATH(path);
1531 return (error);
1532 }
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