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("$FreeBSD$");
31
32 #include "opt_compat.h"
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/conf.h>
37 #include <sys/dirent.h>
38 #include <sys/fcntl.h>
39 #include <sys/file.h>
40 #include <sys/filedesc.h>
41 #include <sys/lock.h>
42 #include <sys/malloc.h>
43 #include <sys/mount.h>
44 #include <sys/mutex.h>
45 #include <sys/namei.h>
46 #include <sys/proc.h>
47 #include <sys/stat.h>
48 #include <sys/sx.h>
49 #include <sys/syscallsubr.h>
50 #include <sys/sysproto.h>
51 #include <sys/tty.h>
52 #include <sys/unistd.h>
53 #include <sys/vnode.h>
54
55 #include <security/mac/mac_framework.h>
56
57 #include <ufs/ufs/extattr.h>
58 #include <ufs/ufs/quota.h>
59 #include <ufs/ufs/ufsmount.h>
60
61 #ifdef COMPAT_LINUX32
62 #include <machine/../linux32/linux.h>
63 #include <machine/../linux32/linux32_proto.h>
64 #else
65 #include <machine/../linux/linux.h>
66 #include <machine/../linux/linux_proto.h>
67 #endif
68 #include <compat/linux/linux_util.h>
69 #include <compat/linux/linux_file.h>
70
71 int
72 linux_creat(struct thread *td, struct linux_creat_args *args)
73 {
74 char *path;
75 int error;
76
77 LCONVPATHEXIST(td, args->path, &path);
78
79 #ifdef DEBUG
80 if (ldebug(creat))
81 printf(ARGS(creat, "%s, %d"), path, args->mode);
82 #endif
83 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC,
84 args->mode);
85 LFREEPATH(path);
86 return (error);
87 }
88
89
90 static int
91 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode)
92 {
93 struct proc *p = td->td_proc;
94 struct file *fp;
95 int fd;
96 int bsd_flags, error;
97
98 bsd_flags = 0;
99 switch (l_flags & LINUX_O_ACCMODE) {
100 case LINUX_O_WRONLY:
101 bsd_flags |= O_WRONLY;
102 break;
103 case LINUX_O_RDWR:
104 bsd_flags |= O_RDWR;
105 break;
106 default:
107 bsd_flags |= O_RDONLY;
108 }
109 if (l_flags & LINUX_O_NDELAY)
110 bsd_flags |= O_NONBLOCK;
111 if (l_flags & LINUX_O_APPEND)
112 bsd_flags |= O_APPEND;
113 if (l_flags & LINUX_O_SYNC)
114 bsd_flags |= O_FSYNC;
115 if (l_flags & LINUX_O_NONBLOCK)
116 bsd_flags |= O_NONBLOCK;
117 if (l_flags & LINUX_FASYNC)
118 bsd_flags |= O_ASYNC;
119 if (l_flags & LINUX_O_CREAT)
120 bsd_flags |= O_CREAT;
121 if (l_flags & LINUX_O_TRUNC)
122 bsd_flags |= O_TRUNC;
123 if (l_flags & LINUX_O_EXCL)
124 bsd_flags |= O_EXCL;
125 if (l_flags & LINUX_O_NOCTTY)
126 bsd_flags |= O_NOCTTY;
127 if (l_flags & LINUX_O_DIRECT)
128 bsd_flags |= O_DIRECT;
129 if (l_flags & LINUX_O_NOFOLLOW)
130 bsd_flags |= O_NOFOLLOW;
131 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */
132
133 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode);
134
135 if (!error) {
136 fd = td->td_retval[0];
137 /*
138 * XXX In between kern_open() and fget(), another process
139 * having the same filedesc could use that fd without
140 * checking below.
141 */
142 error = fget(td, fd, &fp);
143 if (!error) {
144 sx_slock(&proctree_lock);
145 PROC_LOCK(p);
146 if (!(bsd_flags & O_NOCTTY) &&
147 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
148 PROC_UNLOCK(p);
149 sx_unlock(&proctree_lock);
150 if (fp->f_type == DTYPE_VNODE)
151 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0,
152 td->td_ucred, td);
153 } else {
154 PROC_UNLOCK(p);
155 sx_sunlock(&proctree_lock);
156 }
157 if (l_flags & LINUX_O_DIRECTORY) {
158 if (fp->f_type != DTYPE_VNODE ||
159 fp->f_vnode->v_type != VDIR) {
160 error = ENOTDIR;
161 }
162 }
163 fdrop(fp, td);
164 /*
165 * XXX as above, fdrop()/kern_close() pair is racy.
166 */
167 if (error)
168 kern_close(td, fd);
169 }
170 }
171
172 #ifdef DEBUG
173 if (ldebug(open))
174 printf(LMSG("open returns error %d"), error);
175 #endif
176 LFREEPATH(path);
177 return (error);
178 }
179
180 int
181 linux_openat(struct thread *td, struct linux_openat_args *args)
182 {
183 char *path;
184 int dfd;
185
186 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
187 if (args->flags & LINUX_O_CREAT)
188 LCONVPATH_AT(td, args->filename, &path, 1, dfd);
189 else
190 LCONVPATH_AT(td, args->filename, &path, 0, dfd);
191 #ifdef DEBUG
192 if (ldebug(openat))
193 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd,
194 path, args->flags, args->mode);
195 #endif
196 return (linux_common_open(td, dfd, path, args->flags, args->mode));
197 }
198
199 int
200 linux_open(struct thread *td, struct linux_open_args *args)
201 {
202 char *path;
203
204 if (args->flags & LINUX_O_CREAT)
205 LCONVPATHCREAT(td, args->path, &path);
206 else
207 LCONVPATHEXIST(td, args->path, &path);
208
209 #ifdef DEBUG
210 if (ldebug(open))
211 printf(ARGS(open, "%s, 0x%x, 0x%x"),
212 path, args->flags, args->mode);
213 #endif
214
215 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode));
216 }
217
218 int
219 linux_lseek(struct thread *td, struct linux_lseek_args *args)
220 {
221
222 struct lseek_args /* {
223 int fd;
224 int pad;
225 off_t offset;
226 int whence;
227 } */ tmp_args;
228 int error;
229
230 #ifdef DEBUG
231 if (ldebug(lseek))
232 printf(ARGS(lseek, "%d, %ld, %d"),
233 args->fdes, (long)args->off, args->whence);
234 #endif
235 tmp_args.fd = args->fdes;
236 tmp_args.offset = (off_t)args->off;
237 tmp_args.whence = args->whence;
238 error = lseek(td, &tmp_args);
239 return error;
240 }
241
242 int
243 linux_llseek(struct thread *td, struct linux_llseek_args *args)
244 {
245 struct lseek_args bsd_args;
246 int error;
247 off_t off;
248
249 #ifdef DEBUG
250 if (ldebug(llseek))
251 printf(ARGS(llseek, "%d, %d:%d, %d"),
252 args->fd, args->ohigh, args->olow, args->whence);
253 #endif
254 off = (args->olow) | (((off_t) args->ohigh) << 32);
255
256 bsd_args.fd = args->fd;
257 bsd_args.offset = off;
258 bsd_args.whence = args->whence;
259
260 if ((error = lseek(td, &bsd_args)))
261 return error;
262
263 if ((error = copyout(td->td_retval, args->res, sizeof (off_t))))
264 return error;
265
266 td->td_retval[0] = 0;
267 return 0;
268 }
269
270 int
271 linux_readdir(struct thread *td, struct linux_readdir_args *args)
272 {
273 struct linux_getdents_args lda;
274
275 lda.fd = args->fd;
276 lda.dent = args->dent;
277 lda.count = 1;
278 return linux_getdents(td, &lda);
279 }
280
281 /*
282 * Note that linux_getdents(2) and linux_getdents64(2) have the same
283 * arguments. They only differ in the definition of struct dirent they
284 * operate on. We use this to common the code, with the exception of
285 * accessing struct dirent. Note that linux_readdir(2) is implemented
286 * by means of linux_getdents(2). In this case we never operate on
287 * struct dirent64 and thus don't need to handle it...
288 */
289
290 struct l_dirent {
291 l_ulong d_ino;
292 l_off_t d_off;
293 l_ushort d_reclen;
294 char d_name[LINUX_NAME_MAX + 1];
295 };
296
297 struct l_dirent64 {
298 uint64_t d_ino;
299 int64_t d_off;
300 l_ushort d_reclen;
301 u_char d_type;
302 char d_name[LINUX_NAME_MAX + 1];
303 };
304
305 /*
306 * Linux uses the last byte in the dirent buffer to store d_type,
307 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes.
308 */
309 #define LINUX_RECLEN(namlen) \
310 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \
311 sizeof(l_ulong))
312
313 #define LINUX_RECLEN64(namlen) \
314 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \
315 sizeof(uint64_t))
316
317 #define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \
318 LINUX_RECLEN64(LINUX_NAME_MAX))
319 #define LINUX_DIRBLKSIZ 512
320
321 static int
322 getdents_common(struct thread *td, struct linux_getdents64_args *args,
323 int is64bit)
324 {
325 struct dirent *bdp;
326 struct vnode *vp;
327 caddr_t inp, buf; /* BSD-format */
328 int len, reclen; /* BSD-format */
329 caddr_t outp; /* Linux-format */
330 int resid, linuxreclen=0; /* Linux-format */
331 caddr_t lbuf; /* Linux-format */
332 struct file *fp;
333 struct uio auio;
334 struct iovec aiov;
335 off_t off;
336 struct l_dirent *linux_dirent;
337 struct l_dirent64 *linux_dirent64;
338 int buflen, error, eofflag, nbytes, justone;
339 u_long *cookies = NULL, *cookiep;
340 int ncookies, vfslocked;
341
342 nbytes = args->count;
343 if (nbytes == 1) {
344 /* readdir(2) case. Always struct dirent. */
345 if (is64bit)
346 return (EINVAL);
347 nbytes = sizeof(*linux_dirent);
348 justone = 1;
349 } else
350 justone = 0;
351
352 if ((error = getvnode(td->td_proc->p_fd, args->fd, &fp)) != 0)
353 return (error);
354
355 if ((fp->f_flag & FREAD) == 0) {
356 fdrop(fp, td);
357 return (EBADF);
358 }
359
360 vp = fp->f_vnode;
361 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
362 if (vp->v_type != VDIR) {
363 VFS_UNLOCK_GIANT(vfslocked);
364 fdrop(fp, td);
365 return (EINVAL);
366 }
367
368 off = fp->f_offset;
369
370 buflen = max(LINUX_DIRBLKSIZ, nbytes);
371 buflen = min(buflen, MAXBSIZE);
372 buf = malloc(buflen, M_TEMP, M_WAITOK);
373 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO);
374 vn_lock(vp, LK_SHARED | LK_RETRY);
375
376 aiov.iov_base = buf;
377 aiov.iov_len = buflen;
378 auio.uio_iov = &aiov;
379 auio.uio_iovcnt = 1;
380 auio.uio_rw = UIO_READ;
381 auio.uio_segflg = UIO_SYSSPACE;
382 auio.uio_td = td;
383 auio.uio_resid = buflen;
384 auio.uio_offset = off;
385
386 if (cookies) {
387 free(cookies, M_TEMP);
388 cookies = NULL;
389 }
390
391 #ifdef MAC
392 /*
393 * Do directory search MAC check using non-cached credentials.
394 */
395 if ((error = mac_vnode_check_readdir(td->td_ucred, vp)))
396 goto out;
397 #endif /* MAC */
398 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
399 &cookies)))
400 goto out;
401
402 inp = buf;
403 outp = (caddr_t)args->dirent;
404 resid = nbytes;
405 if ((len = buflen - auio.uio_resid) <= 0)
406 goto eof;
407
408 cookiep = cookies;
409
410 if (cookies) {
411 /*
412 * When using cookies, the vfs has the option of reading from
413 * a different offset than that supplied (UFS truncates the
414 * offset to a block boundary to make sure that it never reads
415 * partway through a directory entry, even if the directory
416 * has been compacted).
417 */
418 while (len > 0 && ncookies > 0 && *cookiep <= off) {
419 bdp = (struct dirent *) inp;
420 len -= bdp->d_reclen;
421 inp += bdp->d_reclen;
422 cookiep++;
423 ncookies--;
424 }
425 }
426
427 while (len > 0) {
428 if (cookiep && ncookies == 0)
429 break;
430 bdp = (struct dirent *) inp;
431 reclen = bdp->d_reclen;
432 if (reclen & 3) {
433 error = EFAULT;
434 goto out;
435 }
436
437 if (bdp->d_fileno == 0) {
438 inp += reclen;
439 if (cookiep) {
440 off = *cookiep++;
441 ncookies--;
442 } else
443 off += reclen;
444
445 len -= reclen;
446 continue;
447 }
448
449 linuxreclen = (is64bit)
450 ? LINUX_RECLEN64(bdp->d_namlen)
451 : LINUX_RECLEN(bdp->d_namlen);
452
453 if (reclen > len || resid < linuxreclen) {
454 outp++;
455 break;
456 }
457
458 if (justone) {
459 /* readdir(2) case. */
460 linux_dirent = (struct l_dirent*)lbuf;
461 linux_dirent->d_ino = bdp->d_fileno;
462 linux_dirent->d_off = (l_off_t)linuxreclen;
463 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen;
464 strlcpy(linux_dirent->d_name, bdp->d_name,
465 linuxreclen - offsetof(struct l_dirent, d_name));
466 error = copyout(linux_dirent, outp, linuxreclen);
467 }
468 if (is64bit) {
469 linux_dirent64 = (struct l_dirent64*)lbuf;
470 linux_dirent64->d_ino = bdp->d_fileno;
471 linux_dirent64->d_off = (cookiep)
472 ? (l_off_t)*cookiep
473 : (l_off_t)(off + reclen);
474 linux_dirent64->d_reclen = (l_ushort)linuxreclen;
475 linux_dirent64->d_type = bdp->d_type;
476 strlcpy(linux_dirent64->d_name, bdp->d_name,
477 linuxreclen - offsetof(struct l_dirent64, d_name));
478 error = copyout(linux_dirent64, outp, linuxreclen);
479 } else if (!justone) {
480 linux_dirent = (struct l_dirent*)lbuf;
481 linux_dirent->d_ino = bdp->d_fileno;
482 linux_dirent->d_off = (cookiep)
483 ? (l_off_t)*cookiep
484 : (l_off_t)(off + reclen);
485 linux_dirent->d_reclen = (l_ushort)linuxreclen;
486 /*
487 * Copy d_type to last byte of l_dirent buffer
488 */
489 lbuf[linuxreclen-1] = bdp->d_type;
490 strlcpy(linux_dirent->d_name, bdp->d_name,
491 linuxreclen - offsetof(struct l_dirent, d_name)-1);
492 error = copyout(linux_dirent, outp, linuxreclen);
493 }
494
495 if (error)
496 goto out;
497
498 inp += reclen;
499 if (cookiep) {
500 off = *cookiep++;
501 ncookies--;
502 } else
503 off += reclen;
504
505 outp += linuxreclen;
506 resid -= linuxreclen;
507 len -= reclen;
508 if (justone)
509 break;
510 }
511
512 if (outp == (caddr_t)args->dirent) {
513 nbytes = resid;
514 goto eof;
515 }
516
517 fp->f_offset = off;
518 if (justone)
519 nbytes = resid + linuxreclen;
520
521 eof:
522 td->td_retval[0] = nbytes - resid;
523
524 out:
525 if (cookies)
526 free(cookies, M_TEMP);
527
528 VOP_UNLOCK(vp, 0);
529 VFS_UNLOCK_GIANT(vfslocked);
530 fdrop(fp, td);
531 free(buf, M_TEMP);
532 free(lbuf, M_TEMP);
533 return (error);
534 }
535
536 int
537 linux_getdents(struct thread *td, struct linux_getdents_args *args)
538 {
539
540 #ifdef DEBUG
541 if (ldebug(getdents))
542 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count);
543 #endif
544
545 return (getdents_common(td, (struct linux_getdents64_args*)args, 0));
546 }
547
548 int
549 linux_getdents64(struct thread *td, struct linux_getdents64_args *args)
550 {
551
552 #ifdef DEBUG
553 if (ldebug(getdents64))
554 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count);
555 #endif
556
557 return (getdents_common(td, args, 1));
558 }
559
560 /*
561 * These exist mainly for hooks for doing /compat/linux translation.
562 */
563
564 int
565 linux_access(struct thread *td, struct linux_access_args *args)
566 {
567 char *path;
568 int error;
569
570 /* linux convention */
571 if (args->flags & ~(F_OK | X_OK | W_OK | R_OK))
572 return (EINVAL);
573
574 LCONVPATHEXIST(td, args->path, &path);
575
576 #ifdef DEBUG
577 if (ldebug(access))
578 printf(ARGS(access, "%s, %d"), path, args->flags);
579 #endif
580 error = kern_access(td, path, UIO_SYSSPACE, args->flags);
581 LFREEPATH(path);
582
583 return (error);
584 }
585
586 int
587 linux_faccessat(struct thread *td, struct linux_faccessat_args *args)
588 {
589 char *path;
590 int error, dfd;
591
592 /* linux convention */
593 if (args->mode & ~(F_OK | X_OK | W_OK | R_OK))
594 return (EINVAL);
595
596 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
597 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
598
599 #ifdef DEBUG
600 if (ldebug(access))
601 printf(ARGS(access, "%s, %d"), path, args->mode);
602 #endif
603
604 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0 /* XXX */,
605 args->mode);
606 LFREEPATH(path);
607
608 return (error);
609 }
610
611 int
612 linux_unlink(struct thread *td, struct linux_unlink_args *args)
613 {
614 char *path;
615 int error;
616 struct stat st;
617
618 LCONVPATHEXIST(td, args->path, &path);
619
620 #ifdef DEBUG
621 if (ldebug(unlink))
622 printf(ARGS(unlink, "%s"), path);
623 #endif
624
625 error = kern_unlink(td, path, UIO_SYSSPACE);
626 if (error == EPERM)
627 /* Introduce POSIX noncompliant behaviour of Linux */
628 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0)
629 if (S_ISDIR(st.st_mode))
630 error = EISDIR;
631 LFREEPATH(path);
632 return (error);
633 }
634
635 int
636 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args)
637 {
638 char *path;
639 int error, dfd;
640 struct stat st;
641
642 if (args->flag & ~LINUX_AT_REMOVEDIR)
643 return (EINVAL);
644
645 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
646 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
647
648 #ifdef DEBUG
649 if (ldebug(unlinkat))
650 printf(ARGS(unlinkat, "%s"), path);
651 #endif
652
653 if (args->flag & LINUX_AT_REMOVEDIR)
654 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE);
655 else
656 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE);
657 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) {
658 /* Introduce POSIX noncompliant behaviour of Linux */
659 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path,
660 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode))
661 error = EISDIR;
662 }
663 LFREEPATH(path);
664 return (error);
665 }
666 int
667 linux_chdir(struct thread *td, struct linux_chdir_args *args)
668 {
669 char *path;
670 int error;
671
672 LCONVPATHEXIST(td, args->path, &path);
673
674 #ifdef DEBUG
675 if (ldebug(chdir))
676 printf(ARGS(chdir, "%s"), path);
677 #endif
678 error = kern_chdir(td, path, UIO_SYSSPACE);
679 LFREEPATH(path);
680 return (error);
681 }
682
683 int
684 linux_chmod(struct thread *td, struct linux_chmod_args *args)
685 {
686 char *path;
687 int error;
688
689 LCONVPATHEXIST(td, args->path, &path);
690
691 #ifdef DEBUG
692 if (ldebug(chmod))
693 printf(ARGS(chmod, "%s, %d"), path, args->mode);
694 #endif
695 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode);
696 LFREEPATH(path);
697 return (error);
698 }
699
700 int
701 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args)
702 {
703 char *path;
704 int error, dfd;
705
706 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
707 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
708
709 #ifdef DEBUG
710 if (ldebug(fchmodat))
711 printf(ARGS(fchmodat, "%s, %d"), path, args->mode);
712 #endif
713
714 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0);
715 LFREEPATH(path);
716 return (error);
717 }
718
719 int
720 linux_mkdir(struct thread *td, struct linux_mkdir_args *args)
721 {
722 char *path;
723 int error;
724
725 LCONVPATHCREAT(td, args->path, &path);
726
727 #ifdef DEBUG
728 if (ldebug(mkdir))
729 printf(ARGS(mkdir, "%s, %d"), path, args->mode);
730 #endif
731 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode);
732 LFREEPATH(path);
733 return (error);
734 }
735
736 int
737 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args)
738 {
739 char *path;
740 int error, dfd;
741
742 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
743 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd);
744
745 #ifdef DEBUG
746 if (ldebug(mkdirat))
747 printf(ARGS(mkdirat, "%s, %d"), path, args->mode);
748 #endif
749 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode);
750 LFREEPATH(path);
751 return (error);
752 }
753
754 int
755 linux_rmdir(struct thread *td, struct linux_rmdir_args *args)
756 {
757 char *path;
758 int error;
759
760 LCONVPATHEXIST(td, args->path, &path);
761
762 #ifdef DEBUG
763 if (ldebug(rmdir))
764 printf(ARGS(rmdir, "%s"), path);
765 #endif
766 error = kern_rmdir(td, path, UIO_SYSSPACE);
767 LFREEPATH(path);
768 return (error);
769 }
770
771 int
772 linux_rename(struct thread *td, struct linux_rename_args *args)
773 {
774 char *from, *to;
775 int error;
776
777 LCONVPATHEXIST(td, args->from, &from);
778 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
779 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
780 if (to == NULL) {
781 LFREEPATH(from);
782 return (error);
783 }
784
785 #ifdef DEBUG
786 if (ldebug(rename))
787 printf(ARGS(rename, "%s, %s"), from, to);
788 #endif
789 error = kern_rename(td, from, to, UIO_SYSSPACE);
790 LFREEPATH(from);
791 LFREEPATH(to);
792 return (error);
793 }
794
795 int
796 linux_renameat(struct thread *td, struct linux_renameat_args *args)
797 {
798 char *from, *to;
799 int error, olddfd, newdfd;
800
801 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
802 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
803 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd);
804 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
805 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
806 if (to == NULL) {
807 LFREEPATH(from);
808 return (error);
809 }
810
811 #ifdef DEBUG
812 if (ldebug(renameat))
813 printf(ARGS(renameat, "%s, %s"), from, to);
814 #endif
815 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE);
816 LFREEPATH(from);
817 LFREEPATH(to);
818 return (error);
819 }
820
821 int
822 linux_symlink(struct thread *td, struct linux_symlink_args *args)
823 {
824 char *path, *to;
825 int error;
826
827 LCONVPATHEXIST(td, args->path, &path);
828 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
829 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
830 if (to == NULL) {
831 LFREEPATH(path);
832 return (error);
833 }
834
835 #ifdef DEBUG
836 if (ldebug(symlink))
837 printf(ARGS(symlink, "%s, %s"), path, to);
838 #endif
839 error = kern_symlink(td, path, to, UIO_SYSSPACE);
840 LFREEPATH(path);
841 LFREEPATH(to);
842 return (error);
843 }
844
845 int
846 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args)
847 {
848 char *path, *to;
849 int error, dfd;
850
851 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
852 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd);
853 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
854 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd);
855 if (to == NULL) {
856 LFREEPATH(path);
857 return (error);
858 }
859
860 #ifdef DEBUG
861 if (ldebug(symlinkat))
862 printf(ARGS(symlinkat, "%s, %s"), path, to);
863 #endif
864
865 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE);
866 LFREEPATH(path);
867 LFREEPATH(to);
868 return (error);
869 }
870
871 int
872 linux_readlink(struct thread *td, struct linux_readlink_args *args)
873 {
874 char *name;
875 int error;
876
877 LCONVPATHEXIST(td, args->name, &name);
878
879 #ifdef DEBUG
880 if (ldebug(readlink))
881 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf,
882 args->count);
883 #endif
884 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE,
885 args->count);
886 LFREEPATH(name);
887 return (error);
888 }
889
890 int
891 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args)
892 {
893 char *name;
894 int error, dfd;
895
896 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
897 LCONVPATHEXIST_AT(td, args->path, &name, dfd);
898
899 #ifdef DEBUG
900 if (ldebug(readlinkat))
901 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf,
902 args->bufsiz);
903 #endif
904
905 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf,
906 UIO_USERSPACE, args->bufsiz);
907 LFREEPATH(name);
908 return (error);
909 }
910
911 int
912 linux_truncate(struct thread *td, struct linux_truncate_args *args)
913 {
914 char *path;
915 int error;
916
917 LCONVPATHEXIST(td, args->path, &path);
918
919 #ifdef DEBUG
920 if (ldebug(truncate))
921 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length);
922 #endif
923
924 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
925 LFREEPATH(path);
926 return (error);
927 }
928
929 int
930 linux_truncate64(struct thread *td, struct linux_truncate64_args *args)
931 {
932 char *path;
933 int error;
934
935 LCONVPATHEXIST(td, args->path, &path);
936
937 #ifdef DEBUG
938 if (ldebug(truncate64))
939 printf(ARGS(truncate64, "%s, %jd"), path, args->length);
940 #endif
941
942 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
943 LFREEPATH(path);
944 return (error);
945 }
946 int
947 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args)
948 {
949 struct ftruncate_args /* {
950 int fd;
951 int pad;
952 off_t length;
953 } */ nuap;
954
955 nuap.fd = args->fd;
956 nuap.length = args->length;
957 return (ftruncate(td, &nuap));
958 }
959
960 int
961 linux_link(struct thread *td, struct linux_link_args *args)
962 {
963 char *path, *to;
964 int error;
965
966 LCONVPATHEXIST(td, args->path, &path);
967 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
968 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
969 if (to == NULL) {
970 LFREEPATH(path);
971 return (error);
972 }
973
974 #ifdef DEBUG
975 if (ldebug(link))
976 printf(ARGS(link, "%s, %s"), path, to);
977 #endif
978 error = kern_link(td, path, to, UIO_SYSSPACE);
979 LFREEPATH(path);
980 LFREEPATH(to);
981 return (error);
982 }
983
984 int
985 linux_linkat(struct thread *td, struct linux_linkat_args *args)
986 {
987 char *path, *to;
988 int error, olddfd, newdfd;
989
990 /*
991 * They really introduced flags argument which is forbidden to
992 * use.
993 */
994 if (args->flags != 0)
995 return (EINVAL);
996
997 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
998 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
999 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd);
1000 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
1001 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
1002 if (to == NULL) {
1003 LFREEPATH(path);
1004 return (error);
1005 }
1006
1007 #ifdef DEBUG
1008 if (ldebug(linkat))
1009 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path,
1010 args->newdfd, to, args->flags);
1011 #endif
1012
1013 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, FOLLOW);
1014 LFREEPATH(path);
1015 LFREEPATH(to);
1016 return (error);
1017 }
1018
1019 int
1020 linux_fdatasync(td, uap)
1021 struct thread *td;
1022 struct linux_fdatasync_args *uap;
1023 {
1024 struct fsync_args bsd;
1025
1026 bsd.fd = uap->fd;
1027 return fsync(td, &bsd);
1028 }
1029
1030 int
1031 linux_pread(td, uap)
1032 struct thread *td;
1033 struct linux_pread_args *uap;
1034 {
1035 struct pread_args bsd;
1036 struct vnode *vp;
1037 int error;
1038
1039 bsd.fd = uap->fd;
1040 bsd.buf = uap->buf;
1041 bsd.nbyte = uap->nbyte;
1042 bsd.offset = uap->offset;
1043
1044 error = pread(td, &bsd);
1045
1046 if (error == 0) {
1047 /* This seems to violate POSIX but linux does it */
1048 if ((error = fgetvp(td, uap->fd, &vp)) != 0)
1049 return (error);
1050 if (vp->v_type == VDIR) {
1051 vrele(vp);
1052 return (EISDIR);
1053 }
1054 vrele(vp);
1055 }
1056
1057 return (error);
1058 }
1059
1060 int
1061 linux_pwrite(td, uap)
1062 struct thread *td;
1063 struct linux_pwrite_args *uap;
1064 {
1065 struct pwrite_args bsd;
1066
1067 bsd.fd = uap->fd;
1068 bsd.buf = uap->buf;
1069 bsd.nbyte = uap->nbyte;
1070 bsd.offset = uap->offset;
1071 return pwrite(td, &bsd);
1072 }
1073
1074 int
1075 linux_mount(struct thread *td, struct linux_mount_args *args)
1076 {
1077 struct ufs_args ufs;
1078 char fstypename[MFSNAMELEN];
1079 char mntonname[MNAMELEN], mntfromname[MNAMELEN];
1080 int error;
1081 int fsflags;
1082 void *fsdata;
1083
1084 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1,
1085 NULL);
1086 if (error)
1087 return (error);
1088 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL);
1089 if (error)
1090 return (error);
1091 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL);
1092 if (error)
1093 return (error);
1094
1095 #ifdef DEBUG
1096 if (ldebug(mount))
1097 printf(ARGS(mount, "%s, %s, %s"),
1098 fstypename, mntfromname, mntonname);
1099 #endif
1100
1101 if (strcmp(fstypename, "ext2") == 0) {
1102 strcpy(fstypename, "ext2fs");
1103 fsdata = &ufs;
1104 ufs.fspec = mntfromname;
1105 #define DEFAULT_ROOTID -2
1106 ufs.export.ex_root = DEFAULT_ROOTID;
1107 ufs.export.ex_flags =
1108 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0;
1109 } else if (strcmp(fstypename, "proc") == 0) {
1110 strcpy(fstypename, "linprocfs");
1111 fsdata = NULL;
1112 } else if (strcmp(fstypename, "vfat") == 0) {
1113 strcpy(fstypename, "msdosfs");
1114 fsdata = NULL;
1115 } else {
1116 return (ENODEV);
1117 }
1118
1119 fsflags = 0;
1120
1121 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) {
1122 /*
1123 * Linux SYNC flag is not included; the closest equivalent
1124 * FreeBSD has is !ASYNC, which is our default.
1125 */
1126 if (args->rwflag & LINUX_MS_RDONLY)
1127 fsflags |= MNT_RDONLY;
1128 if (args->rwflag & LINUX_MS_NOSUID)
1129 fsflags |= MNT_NOSUID;
1130 if (args->rwflag & LINUX_MS_NOEXEC)
1131 fsflags |= MNT_NOEXEC;
1132 if (args->rwflag & LINUX_MS_REMOUNT)
1133 fsflags |= MNT_UPDATE;
1134 }
1135
1136 if (strcmp(fstypename, "linprocfs") == 0) {
1137 error = kernel_vmount(fsflags,
1138 "fstype", fstypename,
1139 "fspath", mntonname,
1140 NULL);
1141 } else if (strcmp(fstypename, "msdosfs") == 0) {
1142 error = kernel_vmount(fsflags,
1143 "fstype", fstypename,
1144 "fspath", mntonname,
1145 "from", mntfromname,
1146 NULL);
1147 } else
1148 error = EOPNOTSUPP;
1149 return (error);
1150 }
1151
1152 int
1153 linux_oldumount(struct thread *td, struct linux_oldumount_args *args)
1154 {
1155 struct linux_umount_args args2;
1156
1157 args2.path = args->path;
1158 args2.flags = 0;
1159 return (linux_umount(td, &args2));
1160 }
1161
1162 int
1163 linux_umount(struct thread *td, struct linux_umount_args *args)
1164 {
1165 struct unmount_args bsd;
1166
1167 bsd.path = args->path;
1168 bsd.flags = args->flags; /* XXX correct? */
1169 return (unmount(td, &bsd));
1170 }
1171
1172 /*
1173 * fcntl family of syscalls
1174 */
1175
1176 struct l_flock {
1177 l_short l_type;
1178 l_short l_whence;
1179 l_off_t l_start;
1180 l_off_t l_len;
1181 l_pid_t l_pid;
1182 }
1183 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1184 __packed
1185 #endif
1186 ;
1187
1188 static void
1189 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock)
1190 {
1191 switch (linux_flock->l_type) {
1192 case LINUX_F_RDLCK:
1193 bsd_flock->l_type = F_RDLCK;
1194 break;
1195 case LINUX_F_WRLCK:
1196 bsd_flock->l_type = F_WRLCK;
1197 break;
1198 case LINUX_F_UNLCK:
1199 bsd_flock->l_type = F_UNLCK;
1200 break;
1201 default:
1202 bsd_flock->l_type = -1;
1203 break;
1204 }
1205 bsd_flock->l_whence = linux_flock->l_whence;
1206 bsd_flock->l_start = (off_t)linux_flock->l_start;
1207 bsd_flock->l_len = (off_t)linux_flock->l_len;
1208 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1209 bsd_flock->l_sysid = 0;
1210 }
1211
1212 static void
1213 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock)
1214 {
1215 switch (bsd_flock->l_type) {
1216 case F_RDLCK:
1217 linux_flock->l_type = LINUX_F_RDLCK;
1218 break;
1219 case F_WRLCK:
1220 linux_flock->l_type = LINUX_F_WRLCK;
1221 break;
1222 case F_UNLCK:
1223 linux_flock->l_type = LINUX_F_UNLCK;
1224 break;
1225 }
1226 linux_flock->l_whence = bsd_flock->l_whence;
1227 linux_flock->l_start = (l_off_t)bsd_flock->l_start;
1228 linux_flock->l_len = (l_off_t)bsd_flock->l_len;
1229 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1230 }
1231
1232 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1233 struct l_flock64 {
1234 l_short l_type;
1235 l_short l_whence;
1236 l_loff_t l_start;
1237 l_loff_t l_len;
1238 l_pid_t l_pid;
1239 }
1240 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1241 __packed
1242 #endif
1243 ;
1244
1245 static void
1246 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock)
1247 {
1248 switch (linux_flock->l_type) {
1249 case LINUX_F_RDLCK:
1250 bsd_flock->l_type = F_RDLCK;
1251 break;
1252 case LINUX_F_WRLCK:
1253 bsd_flock->l_type = F_WRLCK;
1254 break;
1255 case LINUX_F_UNLCK:
1256 bsd_flock->l_type = F_UNLCK;
1257 break;
1258 default:
1259 bsd_flock->l_type = -1;
1260 break;
1261 }
1262 bsd_flock->l_whence = linux_flock->l_whence;
1263 bsd_flock->l_start = (off_t)linux_flock->l_start;
1264 bsd_flock->l_len = (off_t)linux_flock->l_len;
1265 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1266 bsd_flock->l_sysid = 0;
1267 }
1268
1269 static void
1270 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock)
1271 {
1272 switch (bsd_flock->l_type) {
1273 case F_RDLCK:
1274 linux_flock->l_type = LINUX_F_RDLCK;
1275 break;
1276 case F_WRLCK:
1277 linux_flock->l_type = LINUX_F_WRLCK;
1278 break;
1279 case F_UNLCK:
1280 linux_flock->l_type = LINUX_F_UNLCK;
1281 break;
1282 }
1283 linux_flock->l_whence = bsd_flock->l_whence;
1284 linux_flock->l_start = (l_loff_t)bsd_flock->l_start;
1285 linux_flock->l_len = (l_loff_t)bsd_flock->l_len;
1286 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1287 }
1288 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1289
1290 static int
1291 fcntl_common(struct thread *td, struct linux_fcntl64_args *args)
1292 {
1293 struct l_flock linux_flock;
1294 struct flock bsd_flock;
1295 struct file *fp;
1296 long arg;
1297 int error, result;
1298
1299 switch (args->cmd) {
1300 case LINUX_F_DUPFD:
1301 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg));
1302
1303 case LINUX_F_GETFD:
1304 return (kern_fcntl(td, args->fd, F_GETFD, 0));
1305
1306 case LINUX_F_SETFD:
1307 return (kern_fcntl(td, args->fd, F_SETFD, args->arg));
1308
1309 case LINUX_F_GETFL:
1310 error = kern_fcntl(td, args->fd, F_GETFL, 0);
1311 result = td->td_retval[0];
1312 td->td_retval[0] = 0;
1313 if (result & O_RDONLY)
1314 td->td_retval[0] |= LINUX_O_RDONLY;
1315 if (result & O_WRONLY)
1316 td->td_retval[0] |= LINUX_O_WRONLY;
1317 if (result & O_RDWR)
1318 td->td_retval[0] |= LINUX_O_RDWR;
1319 if (result & O_NDELAY)
1320 td->td_retval[0] |= LINUX_O_NONBLOCK;
1321 if (result & O_APPEND)
1322 td->td_retval[0] |= LINUX_O_APPEND;
1323 if (result & O_FSYNC)
1324 td->td_retval[0] |= LINUX_O_SYNC;
1325 if (result & O_ASYNC)
1326 td->td_retval[0] |= LINUX_FASYNC;
1327 #ifdef LINUX_O_NOFOLLOW
1328 if (result & O_NOFOLLOW)
1329 td->td_retval[0] |= LINUX_O_NOFOLLOW;
1330 #endif
1331 #ifdef LINUX_O_DIRECT
1332 if (result & O_DIRECT)
1333 td->td_retval[0] |= LINUX_O_DIRECT;
1334 #endif
1335 return (error);
1336
1337 case LINUX_F_SETFL:
1338 arg = 0;
1339 if (args->arg & LINUX_O_NDELAY)
1340 arg |= O_NONBLOCK;
1341 if (args->arg & LINUX_O_APPEND)
1342 arg |= O_APPEND;
1343 if (args->arg & LINUX_O_SYNC)
1344 arg |= O_FSYNC;
1345 if (args->arg & LINUX_FASYNC)
1346 arg |= O_ASYNC;
1347 #ifdef LINUX_O_NOFOLLOW
1348 if (args->arg & LINUX_O_NOFOLLOW)
1349 arg |= O_NOFOLLOW;
1350 #endif
1351 #ifdef LINUX_O_DIRECT
1352 if (args->arg & LINUX_O_DIRECT)
1353 arg |= O_DIRECT;
1354 #endif
1355 return (kern_fcntl(td, args->fd, F_SETFL, arg));
1356
1357 case LINUX_F_GETLK:
1358 error = copyin((void *)args->arg, &linux_flock,
1359 sizeof(linux_flock));
1360 if (error)
1361 return (error);
1362 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1363 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1364 if (error)
1365 return (error);
1366 bsd_to_linux_flock(&bsd_flock, &linux_flock);
1367 return (copyout(&linux_flock, (void *)args->arg,
1368 sizeof(linux_flock)));
1369
1370 case LINUX_F_SETLK:
1371 error = copyin((void *)args->arg, &linux_flock,
1372 sizeof(linux_flock));
1373 if (error)
1374 return (error);
1375 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1376 return (kern_fcntl(td, args->fd, F_SETLK,
1377 (intptr_t)&bsd_flock));
1378
1379 case LINUX_F_SETLKW:
1380 error = copyin((void *)args->arg, &linux_flock,
1381 sizeof(linux_flock));
1382 if (error)
1383 return (error);
1384 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1385 return (kern_fcntl(td, args->fd, F_SETLKW,
1386 (intptr_t)&bsd_flock));
1387
1388 case LINUX_F_GETOWN:
1389 return (kern_fcntl(td, args->fd, F_GETOWN, 0));
1390
1391 case LINUX_F_SETOWN:
1392 /*
1393 * XXX some Linux applications depend on F_SETOWN having no
1394 * significant effect for pipes (SIGIO is not delivered for
1395 * pipes under Linux-2.2.35 at least).
1396 */
1397 error = fget(td, args->fd, &fp);
1398 if (error)
1399 return (error);
1400 if (fp->f_type == DTYPE_PIPE) {
1401 fdrop(fp, td);
1402 return (EINVAL);
1403 }
1404 fdrop(fp, td);
1405
1406 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg));
1407 }
1408
1409 return (EINVAL);
1410 }
1411
1412 int
1413 linux_fcntl(struct thread *td, struct linux_fcntl_args *args)
1414 {
1415 struct linux_fcntl64_args args64;
1416
1417 #ifdef DEBUG
1418 if (ldebug(fcntl))
1419 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd);
1420 #endif
1421
1422 args64.fd = args->fd;
1423 args64.cmd = args->cmd;
1424 args64.arg = args->arg;
1425 return (fcntl_common(td, &args64));
1426 }
1427
1428 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1429 int
1430 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args)
1431 {
1432 struct l_flock64 linux_flock;
1433 struct flock bsd_flock;
1434 int error;
1435
1436 #ifdef DEBUG
1437 if (ldebug(fcntl64))
1438 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd);
1439 #endif
1440
1441 switch (args->cmd) {
1442 case LINUX_F_GETLK64:
1443 error = copyin((void *)args->arg, &linux_flock,
1444 sizeof(linux_flock));
1445 if (error)
1446 return (error);
1447 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1448 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1449 if (error)
1450 return (error);
1451 bsd_to_linux_flock64(&bsd_flock, &linux_flock);
1452 return (copyout(&linux_flock, (void *)args->arg,
1453 sizeof(linux_flock)));
1454
1455 case LINUX_F_SETLK64:
1456 error = copyin((void *)args->arg, &linux_flock,
1457 sizeof(linux_flock));
1458 if (error)
1459 return (error);
1460 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1461 return (kern_fcntl(td, args->fd, F_SETLK,
1462 (intptr_t)&bsd_flock));
1463
1464 case LINUX_F_SETLKW64:
1465 error = copyin((void *)args->arg, &linux_flock,
1466 sizeof(linux_flock));
1467 if (error)
1468 return (error);
1469 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1470 return (kern_fcntl(td, args->fd, F_SETLKW,
1471 (intptr_t)&bsd_flock));
1472 }
1473
1474 return (fcntl_common(td, args));
1475 }
1476 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1477
1478 int
1479 linux_chown(struct thread *td, struct linux_chown_args *args)
1480 {
1481 char *path;
1482 int error;
1483
1484 LCONVPATHEXIST(td, args->path, &path);
1485
1486 #ifdef DEBUG
1487 if (ldebug(chown))
1488 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid);
1489 #endif
1490 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid);
1491 LFREEPATH(path);
1492 return (error);
1493 }
1494
1495 int
1496 linux_fchownat(struct thread *td, struct linux_fchownat_args *args)
1497 {
1498 char *path;
1499 int error, dfd, follow;
1500
1501 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
1502 return (EINVAL);
1503
1504 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1505 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
1506
1507 #ifdef DEBUG
1508 if (ldebug(fchownat))
1509 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid);
1510 #endif
1511
1512 follow = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 :
1513 AT_SYMLINK_NOFOLLOW;
1514 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid,
1515 follow);
1516 LFREEPATH(path);
1517 return (error);
1518 }
1519
1520 int
1521 linux_lchown(struct thread *td, struct linux_lchown_args *args)
1522 {
1523 char *path;
1524 int error;
1525
1526 LCONVPATHEXIST(td, args->path, &path);
1527
1528 #ifdef DEBUG
1529 if (ldebug(lchown))
1530 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid);
1531 #endif
1532 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid);
1533 LFREEPATH(path);
1534 return (error);
1535 }
1536
1537 static int
1538 convert_fadvice(int advice)
1539 {
1540 switch (advice) {
1541 case LINUX_POSIX_FADV_NORMAL:
1542 return (POSIX_FADV_NORMAL);
1543 case LINUX_POSIX_FADV_RANDOM:
1544 return (POSIX_FADV_RANDOM);
1545 case LINUX_POSIX_FADV_SEQUENTIAL:
1546 return (POSIX_FADV_SEQUENTIAL);
1547 case LINUX_POSIX_FADV_WILLNEED:
1548 return (POSIX_FADV_WILLNEED);
1549 case LINUX_POSIX_FADV_DONTNEED:
1550 return (POSIX_FADV_DONTNEED);
1551 case LINUX_POSIX_FADV_NOREUSE:
1552 return (POSIX_FADV_NOREUSE);
1553 default:
1554 return (-1);
1555 }
1556 }
1557
1558 int
1559 linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args)
1560 {
1561 int advice;
1562
1563 advice = convert_fadvice(args->advice);
1564 if (advice == -1)
1565 return (EINVAL);
1566 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1567 advice));
1568 }
1569
1570 int
1571 linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args)
1572 {
1573 int advice;
1574
1575 advice = convert_fadvice(args->advice);
1576 if (advice == -1)
1577 return (EINVAL);
1578 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1579 advice));
1580 }
Cache object: f47b17d2ffbad6d6667dfc2584bab56c
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