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/9.2/sys/compat/linux/linux_file.c 248532 2013-03-19 20:18:30Z jkim $");
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 /* XXX */
73 int do_pipe(struct thread *td, int fildes[2], int flags);
74
75 int
76 linux_creat(struct thread *td, struct linux_creat_args *args)
77 {
78 char *path;
79 int error;
80
81 LCONVPATHEXIST(td, args->path, &path);
82
83 #ifdef DEBUG
84 if (ldebug(creat))
85 printf(ARGS(creat, "%s, %d"), path, args->mode);
86 #endif
87 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC,
88 args->mode);
89 LFREEPATH(path);
90 return (error);
91 }
92
93
94 static int
95 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode)
96 {
97 struct proc *p = td->td_proc;
98 struct file *fp;
99 int fd;
100 int bsd_flags, error;
101
102 bsd_flags = 0;
103 switch (l_flags & LINUX_O_ACCMODE) {
104 case LINUX_O_WRONLY:
105 bsd_flags |= O_WRONLY;
106 break;
107 case LINUX_O_RDWR:
108 bsd_flags |= O_RDWR;
109 break;
110 default:
111 bsd_flags |= O_RDONLY;
112 }
113 if (l_flags & LINUX_O_NDELAY)
114 bsd_flags |= O_NONBLOCK;
115 if (l_flags & LINUX_O_APPEND)
116 bsd_flags |= O_APPEND;
117 if (l_flags & LINUX_O_SYNC)
118 bsd_flags |= O_FSYNC;
119 if (l_flags & LINUX_O_NONBLOCK)
120 bsd_flags |= O_NONBLOCK;
121 if (l_flags & LINUX_FASYNC)
122 bsd_flags |= O_ASYNC;
123 if (l_flags & LINUX_O_CREAT)
124 bsd_flags |= O_CREAT;
125 if (l_flags & LINUX_O_TRUNC)
126 bsd_flags |= O_TRUNC;
127 if (l_flags & LINUX_O_EXCL)
128 bsd_flags |= O_EXCL;
129 if (l_flags & LINUX_O_NOCTTY)
130 bsd_flags |= O_NOCTTY;
131 if (l_flags & LINUX_O_DIRECT)
132 bsd_flags |= O_DIRECT;
133 if (l_flags & LINUX_O_NOFOLLOW)
134 bsd_flags |= O_NOFOLLOW;
135 if (l_flags & LINUX_O_DIRECTORY)
136 bsd_flags |= O_DIRECTORY;
137 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */
138
139 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode);
140
141 if (!error) {
142 fd = td->td_retval[0];
143 /*
144 * XXX In between kern_open() and fget(), another process
145 * having the same filedesc could use that fd without
146 * checking below.
147 */
148 error = fget(td, fd, CAP_IOCTL, &fp);
149 if (!error) {
150 sx_slock(&proctree_lock);
151 PROC_LOCK(p);
152 if (!(bsd_flags & O_NOCTTY) &&
153 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
154 PROC_UNLOCK(p);
155 sx_unlock(&proctree_lock);
156 if (fp->f_type == DTYPE_VNODE)
157 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0,
158 td->td_ucred, td);
159 } else {
160 PROC_UNLOCK(p);
161 sx_sunlock(&proctree_lock);
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 = sys_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 = sys_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, CAP_READ, &fp)) != 0)
353 return (error);
354
355 if ((fp->f_flag & FREAD) == 0) {
356 fdrop(fp, td);
357 return (EBADF);
358 }
359
360 off = foffset_lock(fp, 0);
361 vp = fp->f_vnode;
362 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
363 if (vp->v_type != VDIR) {
364 VFS_UNLOCK_GIANT(vfslocked);
365 foffset_unlock(fp, off, 0);
366 fdrop(fp, td);
367 return (EINVAL);
368 }
369
370
371 buflen = max(LINUX_DIRBLKSIZ, nbytes);
372 buflen = min(buflen, MAXBSIZE);
373 buf = malloc(buflen, M_TEMP, M_WAITOK);
374 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO);
375 vn_lock(vp, LK_SHARED | LK_RETRY);
376
377 aiov.iov_base = buf;
378 aiov.iov_len = buflen;
379 auio.uio_iov = &aiov;
380 auio.uio_iovcnt = 1;
381 auio.uio_rw = UIO_READ;
382 auio.uio_segflg = UIO_SYSSPACE;
383 auio.uio_td = td;
384 auio.uio_resid = buflen;
385 auio.uio_offset = off;
386
387 #ifdef MAC
388 /*
389 * Do directory search MAC check using non-cached credentials.
390 */
391 if ((error = mac_vnode_check_readdir(td->td_ucred, vp)))
392 goto out;
393 #endif /* MAC */
394 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
395 &cookies)))
396 goto out;
397
398 inp = buf;
399 outp = (caddr_t)args->dirent;
400 resid = nbytes;
401 if ((len = buflen - auio.uio_resid) <= 0)
402 goto eof;
403
404 cookiep = cookies;
405
406 if (cookies) {
407 /*
408 * When using cookies, the vfs has the option of reading from
409 * a different offset than that supplied (UFS truncates the
410 * offset to a block boundary to make sure that it never reads
411 * partway through a directory entry, even if the directory
412 * has been compacted).
413 */
414 while (len > 0 && ncookies > 0 && *cookiep <= off) {
415 bdp = (struct dirent *) inp;
416 len -= bdp->d_reclen;
417 inp += bdp->d_reclen;
418 cookiep++;
419 ncookies--;
420 }
421 }
422
423 while (len > 0) {
424 if (cookiep && ncookies == 0)
425 break;
426 bdp = (struct dirent *) inp;
427 reclen = bdp->d_reclen;
428 if (reclen & 3) {
429 error = EFAULT;
430 goto out;
431 }
432
433 if (bdp->d_fileno == 0) {
434 inp += reclen;
435 if (cookiep) {
436 off = *cookiep++;
437 ncookies--;
438 } else
439 off += reclen;
440
441 len -= reclen;
442 continue;
443 }
444
445 linuxreclen = (is64bit)
446 ? LINUX_RECLEN64(bdp->d_namlen)
447 : LINUX_RECLEN(bdp->d_namlen);
448
449 if (reclen > len || resid < linuxreclen) {
450 outp++;
451 break;
452 }
453
454 if (justone) {
455 /* readdir(2) case. */
456 linux_dirent = (struct l_dirent*)lbuf;
457 linux_dirent->d_ino = bdp->d_fileno;
458 linux_dirent->d_off = (l_off_t)linuxreclen;
459 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen;
460 strlcpy(linux_dirent->d_name, bdp->d_name,
461 linuxreclen - offsetof(struct l_dirent, d_name));
462 error = copyout(linux_dirent, outp, linuxreclen);
463 }
464 if (is64bit) {
465 linux_dirent64 = (struct l_dirent64*)lbuf;
466 linux_dirent64->d_ino = bdp->d_fileno;
467 linux_dirent64->d_off = (cookiep)
468 ? (l_off_t)*cookiep
469 : (l_off_t)(off + reclen);
470 linux_dirent64->d_reclen = (l_ushort)linuxreclen;
471 linux_dirent64->d_type = bdp->d_type;
472 strlcpy(linux_dirent64->d_name, bdp->d_name,
473 linuxreclen - offsetof(struct l_dirent64, d_name));
474 error = copyout(linux_dirent64, outp, linuxreclen);
475 } else if (!justone) {
476 linux_dirent = (struct l_dirent*)lbuf;
477 linux_dirent->d_ino = bdp->d_fileno;
478 linux_dirent->d_off = (cookiep)
479 ? (l_off_t)*cookiep
480 : (l_off_t)(off + reclen);
481 linux_dirent->d_reclen = (l_ushort)linuxreclen;
482 /*
483 * Copy d_type to last byte of l_dirent buffer
484 */
485 lbuf[linuxreclen-1] = bdp->d_type;
486 strlcpy(linux_dirent->d_name, bdp->d_name,
487 linuxreclen - offsetof(struct l_dirent, d_name)-1);
488 error = copyout(linux_dirent, outp, linuxreclen);
489 }
490
491 if (error)
492 goto out;
493
494 inp += reclen;
495 if (cookiep) {
496 off = *cookiep++;
497 ncookies--;
498 } else
499 off += reclen;
500
501 outp += linuxreclen;
502 resid -= linuxreclen;
503 len -= reclen;
504 if (justone)
505 break;
506 }
507
508 if (outp == (caddr_t)args->dirent) {
509 nbytes = resid;
510 goto eof;
511 }
512
513 if (justone)
514 nbytes = resid + linuxreclen;
515
516 eof:
517 td->td_retval[0] = nbytes - resid;
518
519 out:
520 if (cookies)
521 free(cookies, M_TEMP);
522
523 VOP_UNLOCK(vp, 0);
524 VFS_UNLOCK_GIANT(vfslocked);
525 foffset_unlock(fp, off, 0);
526 fdrop(fp, td);
527 free(buf, M_TEMP);
528 free(lbuf, M_TEMP);
529 return (error);
530 }
531
532 int
533 linux_getdents(struct thread *td, struct linux_getdents_args *args)
534 {
535
536 #ifdef DEBUG
537 if (ldebug(getdents))
538 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count);
539 #endif
540
541 return (getdents_common(td, (struct linux_getdents64_args*)args, 0));
542 }
543
544 int
545 linux_getdents64(struct thread *td, struct linux_getdents64_args *args)
546 {
547
548 #ifdef DEBUG
549 if (ldebug(getdents64))
550 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count);
551 #endif
552
553 return (getdents_common(td, args, 1));
554 }
555
556 /*
557 * These exist mainly for hooks for doing /compat/linux translation.
558 */
559
560 int
561 linux_access(struct thread *td, struct linux_access_args *args)
562 {
563 char *path;
564 int error;
565
566 /* linux convention */
567 if (args->flags & ~(F_OK | X_OK | W_OK | R_OK))
568 return (EINVAL);
569
570 LCONVPATHEXIST(td, args->path, &path);
571
572 #ifdef DEBUG
573 if (ldebug(access))
574 printf(ARGS(access, "%s, %d"), path, args->flags);
575 #endif
576 error = kern_access(td, path, UIO_SYSSPACE, args->flags);
577 LFREEPATH(path);
578
579 return (error);
580 }
581
582 int
583 linux_faccessat(struct thread *td, struct linux_faccessat_args *args)
584 {
585 char *path;
586 int error, dfd;
587
588 /* linux convention */
589 if (args->mode & ~(F_OK | X_OK | W_OK | R_OK))
590 return (EINVAL);
591
592 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
593 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
594
595 #ifdef DEBUG
596 if (ldebug(access))
597 printf(ARGS(access, "%s, %d"), path, args->mode);
598 #endif
599
600 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0 /* XXX */,
601 args->mode);
602 LFREEPATH(path);
603
604 return (error);
605 }
606
607 int
608 linux_unlink(struct thread *td, struct linux_unlink_args *args)
609 {
610 char *path;
611 int error;
612 struct stat st;
613
614 LCONVPATHEXIST(td, args->path, &path);
615
616 #ifdef DEBUG
617 if (ldebug(unlink))
618 printf(ARGS(unlink, "%s"), path);
619 #endif
620
621 error = kern_unlink(td, path, UIO_SYSSPACE);
622 if (error == EPERM)
623 /* Introduce POSIX noncompliant behaviour of Linux */
624 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0)
625 if (S_ISDIR(st.st_mode))
626 error = EISDIR;
627 LFREEPATH(path);
628 return (error);
629 }
630
631 int
632 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args)
633 {
634 char *path;
635 int error, dfd;
636 struct stat st;
637
638 if (args->flag & ~LINUX_AT_REMOVEDIR)
639 return (EINVAL);
640
641 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
642 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
643
644 #ifdef DEBUG
645 if (ldebug(unlinkat))
646 printf(ARGS(unlinkat, "%s"), path);
647 #endif
648
649 if (args->flag & LINUX_AT_REMOVEDIR)
650 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE);
651 else
652 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0);
653 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) {
654 /* Introduce POSIX noncompliant behaviour of Linux */
655 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path,
656 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode))
657 error = EISDIR;
658 }
659 LFREEPATH(path);
660 return (error);
661 }
662 int
663 linux_chdir(struct thread *td, struct linux_chdir_args *args)
664 {
665 char *path;
666 int error;
667
668 LCONVPATHEXIST(td, args->path, &path);
669
670 #ifdef DEBUG
671 if (ldebug(chdir))
672 printf(ARGS(chdir, "%s"), path);
673 #endif
674 error = kern_chdir(td, path, UIO_SYSSPACE);
675 LFREEPATH(path);
676 return (error);
677 }
678
679 int
680 linux_chmod(struct thread *td, struct linux_chmod_args *args)
681 {
682 char *path;
683 int error;
684
685 LCONVPATHEXIST(td, args->path, &path);
686
687 #ifdef DEBUG
688 if (ldebug(chmod))
689 printf(ARGS(chmod, "%s, %d"), path, args->mode);
690 #endif
691 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode);
692 LFREEPATH(path);
693 return (error);
694 }
695
696 int
697 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args)
698 {
699 char *path;
700 int error, dfd;
701
702 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
703 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
704
705 #ifdef DEBUG
706 if (ldebug(fchmodat))
707 printf(ARGS(fchmodat, "%s, %d"), path, args->mode);
708 #endif
709
710 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0);
711 LFREEPATH(path);
712 return (error);
713 }
714
715 int
716 linux_mkdir(struct thread *td, struct linux_mkdir_args *args)
717 {
718 char *path;
719 int error;
720
721 LCONVPATHCREAT(td, args->path, &path);
722
723 #ifdef DEBUG
724 if (ldebug(mkdir))
725 printf(ARGS(mkdir, "%s, %d"), path, args->mode);
726 #endif
727 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode);
728 LFREEPATH(path);
729 return (error);
730 }
731
732 int
733 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args)
734 {
735 char *path;
736 int error, dfd;
737
738 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
739 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd);
740
741 #ifdef DEBUG
742 if (ldebug(mkdirat))
743 printf(ARGS(mkdirat, "%s, %d"), path, args->mode);
744 #endif
745 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode);
746 LFREEPATH(path);
747 return (error);
748 }
749
750 int
751 linux_rmdir(struct thread *td, struct linux_rmdir_args *args)
752 {
753 char *path;
754 int error;
755
756 LCONVPATHEXIST(td, args->path, &path);
757
758 #ifdef DEBUG
759 if (ldebug(rmdir))
760 printf(ARGS(rmdir, "%s"), path);
761 #endif
762 error = kern_rmdir(td, path, UIO_SYSSPACE);
763 LFREEPATH(path);
764 return (error);
765 }
766
767 int
768 linux_rename(struct thread *td, struct linux_rename_args *args)
769 {
770 char *from, *to;
771 int error;
772
773 LCONVPATHEXIST(td, args->from, &from);
774 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
775 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
776 if (to == NULL) {
777 LFREEPATH(from);
778 return (error);
779 }
780
781 #ifdef DEBUG
782 if (ldebug(rename))
783 printf(ARGS(rename, "%s, %s"), from, to);
784 #endif
785 error = kern_rename(td, from, to, UIO_SYSSPACE);
786 LFREEPATH(from);
787 LFREEPATH(to);
788 return (error);
789 }
790
791 int
792 linux_renameat(struct thread *td, struct linux_renameat_args *args)
793 {
794 char *from, *to;
795 int error, olddfd, newdfd;
796
797 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
798 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
799 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd);
800 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
801 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
802 if (to == NULL) {
803 LFREEPATH(from);
804 return (error);
805 }
806
807 #ifdef DEBUG
808 if (ldebug(renameat))
809 printf(ARGS(renameat, "%s, %s"), from, to);
810 #endif
811 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE);
812 LFREEPATH(from);
813 LFREEPATH(to);
814 return (error);
815 }
816
817 int
818 linux_symlink(struct thread *td, struct linux_symlink_args *args)
819 {
820 char *path, *to;
821 int error;
822
823 LCONVPATHEXIST(td, args->path, &path);
824 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
825 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
826 if (to == NULL) {
827 LFREEPATH(path);
828 return (error);
829 }
830
831 #ifdef DEBUG
832 if (ldebug(symlink))
833 printf(ARGS(symlink, "%s, %s"), path, to);
834 #endif
835 error = kern_symlink(td, path, to, UIO_SYSSPACE);
836 LFREEPATH(path);
837 LFREEPATH(to);
838 return (error);
839 }
840
841 int
842 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args)
843 {
844 char *path, *to;
845 int error, dfd;
846
847 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
848 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd);
849 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
850 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd);
851 if (to == NULL) {
852 LFREEPATH(path);
853 return (error);
854 }
855
856 #ifdef DEBUG
857 if (ldebug(symlinkat))
858 printf(ARGS(symlinkat, "%s, %s"), path, to);
859 #endif
860
861 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE);
862 LFREEPATH(path);
863 LFREEPATH(to);
864 return (error);
865 }
866
867 int
868 linux_readlink(struct thread *td, struct linux_readlink_args *args)
869 {
870 char *name;
871 int error;
872
873 LCONVPATHEXIST(td, args->name, &name);
874
875 #ifdef DEBUG
876 if (ldebug(readlink))
877 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf,
878 args->count);
879 #endif
880 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE,
881 args->count);
882 LFREEPATH(name);
883 return (error);
884 }
885
886 int
887 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args)
888 {
889 char *name;
890 int error, dfd;
891
892 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
893 LCONVPATHEXIST_AT(td, args->path, &name, dfd);
894
895 #ifdef DEBUG
896 if (ldebug(readlinkat))
897 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf,
898 args->bufsiz);
899 #endif
900
901 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf,
902 UIO_USERSPACE, args->bufsiz);
903 LFREEPATH(name);
904 return (error);
905 }
906
907 int
908 linux_truncate(struct thread *td, struct linux_truncate_args *args)
909 {
910 char *path;
911 int error;
912
913 LCONVPATHEXIST(td, args->path, &path);
914
915 #ifdef DEBUG
916 if (ldebug(truncate))
917 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length);
918 #endif
919
920 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
921 LFREEPATH(path);
922 return (error);
923 }
924
925 int
926 linux_truncate64(struct thread *td, struct linux_truncate64_args *args)
927 {
928 char *path;
929 int error;
930
931 LCONVPATHEXIST(td, args->path, &path);
932
933 #ifdef DEBUG
934 if (ldebug(truncate64))
935 printf(ARGS(truncate64, "%s, %jd"), path, args->length);
936 #endif
937
938 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
939 LFREEPATH(path);
940 return (error);
941 }
942 int
943 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args)
944 {
945 struct ftruncate_args /* {
946 int fd;
947 int pad;
948 off_t length;
949 } */ nuap;
950
951 nuap.fd = args->fd;
952 nuap.length = args->length;
953 return (sys_ftruncate(td, &nuap));
954 }
955
956 int
957 linux_link(struct thread *td, struct linux_link_args *args)
958 {
959 char *path, *to;
960 int error;
961
962 LCONVPATHEXIST(td, args->path, &path);
963 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
964 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
965 if (to == NULL) {
966 LFREEPATH(path);
967 return (error);
968 }
969
970 #ifdef DEBUG
971 if (ldebug(link))
972 printf(ARGS(link, "%s, %s"), path, to);
973 #endif
974 error = kern_link(td, path, to, UIO_SYSSPACE);
975 LFREEPATH(path);
976 LFREEPATH(to);
977 return (error);
978 }
979
980 int
981 linux_linkat(struct thread *td, struct linux_linkat_args *args)
982 {
983 char *path, *to;
984 int error, olddfd, newdfd;
985
986 /*
987 * They really introduced flags argument which is forbidden to
988 * use.
989 */
990 if (args->flags != 0)
991 return (EINVAL);
992
993 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
994 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
995 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd);
996 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
997 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
998 if (to == NULL) {
999 LFREEPATH(path);
1000 return (error);
1001 }
1002
1003 #ifdef DEBUG
1004 if (ldebug(linkat))
1005 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path,
1006 args->newdfd, to, args->flags);
1007 #endif
1008
1009 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, FOLLOW);
1010 LFREEPATH(path);
1011 LFREEPATH(to);
1012 return (error);
1013 }
1014
1015 int
1016 linux_fdatasync(td, uap)
1017 struct thread *td;
1018 struct linux_fdatasync_args *uap;
1019 {
1020 struct fsync_args bsd;
1021
1022 bsd.fd = uap->fd;
1023 return sys_fsync(td, &bsd);
1024 }
1025
1026 int
1027 linux_pread(td, uap)
1028 struct thread *td;
1029 struct linux_pread_args *uap;
1030 {
1031 struct pread_args bsd;
1032 struct vnode *vp;
1033 int error;
1034
1035 bsd.fd = uap->fd;
1036 bsd.buf = uap->buf;
1037 bsd.nbyte = uap->nbyte;
1038 bsd.offset = uap->offset;
1039
1040 error = sys_pread(td, &bsd);
1041
1042 if (error == 0) {
1043 /* This seems to violate POSIX but linux does it */
1044 if ((error = fgetvp(td, uap->fd, CAP_READ, &vp)) != 0)
1045 return (error);
1046 if (vp->v_type == VDIR) {
1047 vrele(vp);
1048 return (EISDIR);
1049 }
1050 vrele(vp);
1051 }
1052
1053 return (error);
1054 }
1055
1056 int
1057 linux_pwrite(td, uap)
1058 struct thread *td;
1059 struct linux_pwrite_args *uap;
1060 {
1061 struct pwrite_args bsd;
1062
1063 bsd.fd = uap->fd;
1064 bsd.buf = uap->buf;
1065 bsd.nbyte = uap->nbyte;
1066 bsd.offset = uap->offset;
1067 return sys_pwrite(td, &bsd);
1068 }
1069
1070 int
1071 linux_mount(struct thread *td, struct linux_mount_args *args)
1072 {
1073 struct ufs_args ufs;
1074 char fstypename[MFSNAMELEN];
1075 char mntonname[MNAMELEN], mntfromname[MNAMELEN];
1076 int error;
1077 int fsflags;
1078 void *fsdata;
1079
1080 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1,
1081 NULL);
1082 if (error)
1083 return (error);
1084 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL);
1085 if (error)
1086 return (error);
1087 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL);
1088 if (error)
1089 return (error);
1090
1091 #ifdef DEBUG
1092 if (ldebug(mount))
1093 printf(ARGS(mount, "%s, %s, %s"),
1094 fstypename, mntfromname, mntonname);
1095 #endif
1096
1097 if (strcmp(fstypename, "ext2") == 0) {
1098 strcpy(fstypename, "ext2fs");
1099 fsdata = &ufs;
1100 ufs.fspec = mntfromname;
1101 #define DEFAULT_ROOTID -2
1102 ufs.export.ex_root = DEFAULT_ROOTID;
1103 ufs.export.ex_flags =
1104 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0;
1105 } else if (strcmp(fstypename, "proc") == 0) {
1106 strcpy(fstypename, "linprocfs");
1107 fsdata = NULL;
1108 } else if (strcmp(fstypename, "vfat") == 0) {
1109 strcpy(fstypename, "msdosfs");
1110 fsdata = NULL;
1111 } else {
1112 return (ENODEV);
1113 }
1114
1115 fsflags = 0;
1116
1117 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) {
1118 /*
1119 * Linux SYNC flag is not included; the closest equivalent
1120 * FreeBSD has is !ASYNC, which is our default.
1121 */
1122 if (args->rwflag & LINUX_MS_RDONLY)
1123 fsflags |= MNT_RDONLY;
1124 if (args->rwflag & LINUX_MS_NOSUID)
1125 fsflags |= MNT_NOSUID;
1126 if (args->rwflag & LINUX_MS_NOEXEC)
1127 fsflags |= MNT_NOEXEC;
1128 if (args->rwflag & LINUX_MS_REMOUNT)
1129 fsflags |= MNT_UPDATE;
1130 }
1131
1132 if (strcmp(fstypename, "linprocfs") == 0) {
1133 error = kernel_vmount(fsflags,
1134 "fstype", fstypename,
1135 "fspath", mntonname,
1136 NULL);
1137 } else if (strcmp(fstypename, "msdosfs") == 0) {
1138 error = kernel_vmount(fsflags,
1139 "fstype", fstypename,
1140 "fspath", mntonname,
1141 "from", mntfromname,
1142 NULL);
1143 } else
1144 error = EOPNOTSUPP;
1145 return (error);
1146 }
1147
1148 int
1149 linux_oldumount(struct thread *td, struct linux_oldumount_args *args)
1150 {
1151 struct linux_umount_args args2;
1152
1153 args2.path = args->path;
1154 args2.flags = 0;
1155 return (linux_umount(td, &args2));
1156 }
1157
1158 int
1159 linux_umount(struct thread *td, struct linux_umount_args *args)
1160 {
1161 struct unmount_args bsd;
1162
1163 bsd.path = args->path;
1164 bsd.flags = args->flags; /* XXX correct? */
1165 return (sys_unmount(td, &bsd));
1166 }
1167
1168 /*
1169 * fcntl family of syscalls
1170 */
1171
1172 struct l_flock {
1173 l_short l_type;
1174 l_short l_whence;
1175 l_off_t l_start;
1176 l_off_t l_len;
1177 l_pid_t l_pid;
1178 }
1179 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1180 __packed
1181 #endif
1182 ;
1183
1184 static void
1185 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock)
1186 {
1187 switch (linux_flock->l_type) {
1188 case LINUX_F_RDLCK:
1189 bsd_flock->l_type = F_RDLCK;
1190 break;
1191 case LINUX_F_WRLCK:
1192 bsd_flock->l_type = F_WRLCK;
1193 break;
1194 case LINUX_F_UNLCK:
1195 bsd_flock->l_type = F_UNLCK;
1196 break;
1197 default:
1198 bsd_flock->l_type = -1;
1199 break;
1200 }
1201 bsd_flock->l_whence = linux_flock->l_whence;
1202 bsd_flock->l_start = (off_t)linux_flock->l_start;
1203 bsd_flock->l_len = (off_t)linux_flock->l_len;
1204 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1205 bsd_flock->l_sysid = 0;
1206 }
1207
1208 static void
1209 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock)
1210 {
1211 switch (bsd_flock->l_type) {
1212 case F_RDLCK:
1213 linux_flock->l_type = LINUX_F_RDLCK;
1214 break;
1215 case F_WRLCK:
1216 linux_flock->l_type = LINUX_F_WRLCK;
1217 break;
1218 case F_UNLCK:
1219 linux_flock->l_type = LINUX_F_UNLCK;
1220 break;
1221 }
1222 linux_flock->l_whence = bsd_flock->l_whence;
1223 linux_flock->l_start = (l_off_t)bsd_flock->l_start;
1224 linux_flock->l_len = (l_off_t)bsd_flock->l_len;
1225 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1226 }
1227
1228 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1229 struct l_flock64 {
1230 l_short l_type;
1231 l_short l_whence;
1232 l_loff_t l_start;
1233 l_loff_t l_len;
1234 l_pid_t l_pid;
1235 }
1236 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1237 __packed
1238 #endif
1239 ;
1240
1241 static void
1242 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock)
1243 {
1244 switch (linux_flock->l_type) {
1245 case LINUX_F_RDLCK:
1246 bsd_flock->l_type = F_RDLCK;
1247 break;
1248 case LINUX_F_WRLCK:
1249 bsd_flock->l_type = F_WRLCK;
1250 break;
1251 case LINUX_F_UNLCK:
1252 bsd_flock->l_type = F_UNLCK;
1253 break;
1254 default:
1255 bsd_flock->l_type = -1;
1256 break;
1257 }
1258 bsd_flock->l_whence = linux_flock->l_whence;
1259 bsd_flock->l_start = (off_t)linux_flock->l_start;
1260 bsd_flock->l_len = (off_t)linux_flock->l_len;
1261 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1262 bsd_flock->l_sysid = 0;
1263 }
1264
1265 static void
1266 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock)
1267 {
1268 switch (bsd_flock->l_type) {
1269 case F_RDLCK:
1270 linux_flock->l_type = LINUX_F_RDLCK;
1271 break;
1272 case F_WRLCK:
1273 linux_flock->l_type = LINUX_F_WRLCK;
1274 break;
1275 case F_UNLCK:
1276 linux_flock->l_type = LINUX_F_UNLCK;
1277 break;
1278 }
1279 linux_flock->l_whence = bsd_flock->l_whence;
1280 linux_flock->l_start = (l_loff_t)bsd_flock->l_start;
1281 linux_flock->l_len = (l_loff_t)bsd_flock->l_len;
1282 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1283 }
1284 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1285
1286 static int
1287 fcntl_common(struct thread *td, struct linux_fcntl64_args *args)
1288 {
1289 struct l_flock linux_flock;
1290 struct flock bsd_flock;
1291 struct file *fp;
1292 long arg;
1293 int error, result;
1294
1295 switch (args->cmd) {
1296 case LINUX_F_DUPFD:
1297 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg));
1298
1299 case LINUX_F_GETFD:
1300 return (kern_fcntl(td, args->fd, F_GETFD, 0));
1301
1302 case LINUX_F_SETFD:
1303 return (kern_fcntl(td, args->fd, F_SETFD, args->arg));
1304
1305 case LINUX_F_GETFL:
1306 error = kern_fcntl(td, args->fd, F_GETFL, 0);
1307 result = td->td_retval[0];
1308 td->td_retval[0] = 0;
1309 if (result & O_RDONLY)
1310 td->td_retval[0] |= LINUX_O_RDONLY;
1311 if (result & O_WRONLY)
1312 td->td_retval[0] |= LINUX_O_WRONLY;
1313 if (result & O_RDWR)
1314 td->td_retval[0] |= LINUX_O_RDWR;
1315 if (result & O_NDELAY)
1316 td->td_retval[0] |= LINUX_O_NONBLOCK;
1317 if (result & O_APPEND)
1318 td->td_retval[0] |= LINUX_O_APPEND;
1319 if (result & O_FSYNC)
1320 td->td_retval[0] |= LINUX_O_SYNC;
1321 if (result & O_ASYNC)
1322 td->td_retval[0] |= LINUX_FASYNC;
1323 #ifdef LINUX_O_NOFOLLOW
1324 if (result & O_NOFOLLOW)
1325 td->td_retval[0] |= LINUX_O_NOFOLLOW;
1326 #endif
1327 #ifdef LINUX_O_DIRECT
1328 if (result & O_DIRECT)
1329 td->td_retval[0] |= LINUX_O_DIRECT;
1330 #endif
1331 return (error);
1332
1333 case LINUX_F_SETFL:
1334 arg = 0;
1335 if (args->arg & LINUX_O_NDELAY)
1336 arg |= O_NONBLOCK;
1337 if (args->arg & LINUX_O_APPEND)
1338 arg |= O_APPEND;
1339 if (args->arg & LINUX_O_SYNC)
1340 arg |= O_FSYNC;
1341 if (args->arg & LINUX_FASYNC)
1342 arg |= O_ASYNC;
1343 #ifdef LINUX_O_NOFOLLOW
1344 if (args->arg & LINUX_O_NOFOLLOW)
1345 arg |= O_NOFOLLOW;
1346 #endif
1347 #ifdef LINUX_O_DIRECT
1348 if (args->arg & LINUX_O_DIRECT)
1349 arg |= O_DIRECT;
1350 #endif
1351 return (kern_fcntl(td, args->fd, F_SETFL, arg));
1352
1353 case LINUX_F_GETLK:
1354 error = copyin((void *)args->arg, &linux_flock,
1355 sizeof(linux_flock));
1356 if (error)
1357 return (error);
1358 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1359 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1360 if (error)
1361 return (error);
1362 bsd_to_linux_flock(&bsd_flock, &linux_flock);
1363 return (copyout(&linux_flock, (void *)args->arg,
1364 sizeof(linux_flock)));
1365
1366 case LINUX_F_SETLK:
1367 error = copyin((void *)args->arg, &linux_flock,
1368 sizeof(linux_flock));
1369 if (error)
1370 return (error);
1371 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1372 return (kern_fcntl(td, args->fd, F_SETLK,
1373 (intptr_t)&bsd_flock));
1374
1375 case LINUX_F_SETLKW:
1376 error = copyin((void *)args->arg, &linux_flock,
1377 sizeof(linux_flock));
1378 if (error)
1379 return (error);
1380 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1381 return (kern_fcntl(td, args->fd, F_SETLKW,
1382 (intptr_t)&bsd_flock));
1383
1384 case LINUX_F_GETOWN:
1385 return (kern_fcntl(td, args->fd, F_GETOWN, 0));
1386
1387 case LINUX_F_SETOWN:
1388 /*
1389 * XXX some Linux applications depend on F_SETOWN having no
1390 * significant effect for pipes (SIGIO is not delivered for
1391 * pipes under Linux-2.2.35 at least).
1392 */
1393 error = fget(td, args->fd, CAP_FCNTL, &fp);
1394 if (error)
1395 return (error);
1396 if (fp->f_type == DTYPE_PIPE) {
1397 fdrop(fp, td);
1398 return (EINVAL);
1399 }
1400 fdrop(fp, td);
1401
1402 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg));
1403 }
1404
1405 return (EINVAL);
1406 }
1407
1408 int
1409 linux_fcntl(struct thread *td, struct linux_fcntl_args *args)
1410 {
1411 struct linux_fcntl64_args args64;
1412
1413 #ifdef DEBUG
1414 if (ldebug(fcntl))
1415 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd);
1416 #endif
1417
1418 args64.fd = args->fd;
1419 args64.cmd = args->cmd;
1420 args64.arg = args->arg;
1421 return (fcntl_common(td, &args64));
1422 }
1423
1424 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1425 int
1426 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args)
1427 {
1428 struct l_flock64 linux_flock;
1429 struct flock bsd_flock;
1430 int error;
1431
1432 #ifdef DEBUG
1433 if (ldebug(fcntl64))
1434 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd);
1435 #endif
1436
1437 switch (args->cmd) {
1438 case LINUX_F_GETLK64:
1439 error = copyin((void *)args->arg, &linux_flock,
1440 sizeof(linux_flock));
1441 if (error)
1442 return (error);
1443 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1444 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1445 if (error)
1446 return (error);
1447 bsd_to_linux_flock64(&bsd_flock, &linux_flock);
1448 return (copyout(&linux_flock, (void *)args->arg,
1449 sizeof(linux_flock)));
1450
1451 case LINUX_F_SETLK64:
1452 error = copyin((void *)args->arg, &linux_flock,
1453 sizeof(linux_flock));
1454 if (error)
1455 return (error);
1456 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1457 return (kern_fcntl(td, args->fd, F_SETLK,
1458 (intptr_t)&bsd_flock));
1459
1460 case LINUX_F_SETLKW64:
1461 error = copyin((void *)args->arg, &linux_flock,
1462 sizeof(linux_flock));
1463 if (error)
1464 return (error);
1465 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1466 return (kern_fcntl(td, args->fd, F_SETLKW,
1467 (intptr_t)&bsd_flock));
1468 }
1469
1470 return (fcntl_common(td, args));
1471 }
1472 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1473
1474 int
1475 linux_chown(struct thread *td, struct linux_chown_args *args)
1476 {
1477 char *path;
1478 int error;
1479
1480 LCONVPATHEXIST(td, args->path, &path);
1481
1482 #ifdef DEBUG
1483 if (ldebug(chown))
1484 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid);
1485 #endif
1486 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid);
1487 LFREEPATH(path);
1488 return (error);
1489 }
1490
1491 int
1492 linux_fchownat(struct thread *td, struct linux_fchownat_args *args)
1493 {
1494 char *path;
1495 int error, dfd, follow;
1496
1497 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
1498 return (EINVAL);
1499
1500 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1501 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
1502
1503 #ifdef DEBUG
1504 if (ldebug(fchownat))
1505 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid);
1506 #endif
1507
1508 follow = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 :
1509 AT_SYMLINK_NOFOLLOW;
1510 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid,
1511 follow);
1512 LFREEPATH(path);
1513 return (error);
1514 }
1515
1516 int
1517 linux_lchown(struct thread *td, struct linux_lchown_args *args)
1518 {
1519 char *path;
1520 int error;
1521
1522 LCONVPATHEXIST(td, args->path, &path);
1523
1524 #ifdef DEBUG
1525 if (ldebug(lchown))
1526 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid);
1527 #endif
1528 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid);
1529 LFREEPATH(path);
1530 return (error);
1531 }
1532
1533 static int
1534 convert_fadvice(int advice)
1535 {
1536 switch (advice) {
1537 case LINUX_POSIX_FADV_NORMAL:
1538 return (POSIX_FADV_NORMAL);
1539 case LINUX_POSIX_FADV_RANDOM:
1540 return (POSIX_FADV_RANDOM);
1541 case LINUX_POSIX_FADV_SEQUENTIAL:
1542 return (POSIX_FADV_SEQUENTIAL);
1543 case LINUX_POSIX_FADV_WILLNEED:
1544 return (POSIX_FADV_WILLNEED);
1545 case LINUX_POSIX_FADV_DONTNEED:
1546 return (POSIX_FADV_DONTNEED);
1547 case LINUX_POSIX_FADV_NOREUSE:
1548 return (POSIX_FADV_NOREUSE);
1549 default:
1550 return (-1);
1551 }
1552 }
1553
1554 int
1555 linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args)
1556 {
1557 int advice;
1558
1559 advice = convert_fadvice(args->advice);
1560 if (advice == -1)
1561 return (EINVAL);
1562 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1563 advice));
1564 }
1565
1566 int
1567 linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args)
1568 {
1569 int advice;
1570
1571 advice = convert_fadvice(args->advice);
1572 if (advice == -1)
1573 return (EINVAL);
1574 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1575 advice));
1576 }
1577
1578 int
1579 linux_pipe(struct thread *td, struct linux_pipe_args *args)
1580 {
1581 int fildes[2];
1582 int error;
1583
1584 #ifdef DEBUG
1585 if (ldebug(pipe))
1586 printf(ARGS(pipe, "*"));
1587 #endif
1588
1589 error = do_pipe(td, fildes, 0);
1590 if (error)
1591 return (error);
1592
1593 /* XXX: Close descriptors on error. */
1594 return (copyout(fildes, args->pipefds, sizeof(fildes)));
1595 }
1596
1597 int
1598 linux_pipe2(struct thread *td, struct linux_pipe2_args *args)
1599 {
1600 int fildes[2];
1601 int error, flags;
1602
1603 #ifdef DEBUG
1604 if (ldebug(pipe2))
1605 printf(ARGS(pipe2, "*, %d"), args->flags);
1606 #endif
1607
1608 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0)
1609 return (EINVAL);
1610
1611 flags = 0;
1612 if ((args->flags & LINUX_O_NONBLOCK) != 0)
1613 flags |= O_NONBLOCK;
1614 if ((args->flags & LINUX_O_CLOEXEC) != 0)
1615 flags |= O_CLOEXEC;
1616 error = do_pipe(td, fildes, flags);
1617 if (error)
1618 return (error);
1619
1620 /* XXX: Close descriptors on error. */
1621 return (copyout(fildes, args->pipefds, sizeof(fildes)));
1622 }
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