1/*-
2 * Copyright (c) 1994-1995 S�ren 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 withough 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 * $FreeBSD: head/sys/compat/linux/linux_file.c 69539 2000-12-03 01:30:31Z marcel $
29 */
30
31#include "opt_compat.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/sysproto.h>
36#include <sys/fcntl.h>
37#include <sys/file.h>
38#include <sys/filedesc.h>
39#include <sys/lock.h>
40#include <sys/proc.h>
41#include <sys/vnode.h>
42#include <sys/malloc.h>
43#include <sys/dirent.h>
44#include <sys/conf.h>
45#include <sys/tty.h>
46
47#include <machine/../linux/linux.h>
48#include <machine/../linux/linux_proto.h>
49#include <compat/linux/linux_util.h>
50
51#ifndef __alpha__
52int
53linux_creat(struct proc *p, struct linux_creat_args *args)
54{
55 struct open_args /* {
56 char *path;
57 int flags;
58 int mode;
59 } */ bsd_open_args;
60 caddr_t sg;
61
62 sg = stackgap_init();
63 CHECKALTCREAT(p, &sg, args->path);
64
65#ifdef DEBUG
66 printf("Linux-emul(%d): creat(%s, %d)\n",
67 p->p_pid, args->path, args->mode);
68#endif
69 bsd_open_args.path = args->path;
70 bsd_open_args.mode = args->mode;
71 bsd_open_args.flags = O_WRONLY | O_CREAT | O_TRUNC;
72 return open(p, &bsd_open_args);
73}
74#endif /*!__alpha__*/
75
76int
77linux_open(struct proc *p, struct linux_open_args *args)
78{
79 struct open_args /* {
80 char *path;
81 int flags;
82 int mode;
83 } */ bsd_open_args;
84 int error;
85 caddr_t sg;
86
87 sg = stackgap_init();
88
89 if (args->flags & LINUX_O_CREAT)
90 CHECKALTCREAT(p, &sg, args->path);
91 else
92 CHECKALTEXIST(p, &sg, args->path);
93
94#ifdef DEBUG
95 printf("Linux-emul(%d): open(%s, 0x%x, 0x%x)\n",
96 p->p_pid, args->path, args->flags, args->mode);
97#endif
98 bsd_open_args.flags = 0;
99 if (args->flags & LINUX_O_RDONLY)
100 bsd_open_args.flags |= O_RDONLY;
101 if (args->flags & LINUX_O_WRONLY)
102 bsd_open_args.flags |= O_WRONLY;
103 if (args->flags & LINUX_O_RDWR)
104 bsd_open_args.flags |= O_RDWR;
105 if (args->flags & LINUX_O_NDELAY)
106 bsd_open_args.flags |= O_NONBLOCK;
107 if (args->flags & LINUX_O_APPEND)
108 bsd_open_args.flags |= O_APPEND;
109 if (args->flags & LINUX_O_SYNC)
110 bsd_open_args.flags |= O_FSYNC;
111 if (args->flags & LINUX_O_NONBLOCK)
112 bsd_open_args.flags |= O_NONBLOCK;
113 if (args->flags & LINUX_FASYNC)
114 bsd_open_args.flags |= O_ASYNC;
115 if (args->flags & LINUX_O_CREAT)
116 bsd_open_args.flags |= O_CREAT;
117 if (args->flags & LINUX_O_TRUNC)
118 bsd_open_args.flags |= O_TRUNC;
119 if (args->flags & LINUX_O_EXCL)
120 bsd_open_args.flags |= O_EXCL;
121 if (args->flags & LINUX_O_NOCTTY)
122 bsd_open_args.flags |= O_NOCTTY;
123 bsd_open_args.path = args->path;
124 bsd_open_args.mode = args->mode;
125
126 error = open(p, &bsd_open_args);
127 if (!error && !(bsd_open_args.flags & O_NOCTTY) &&
128 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
129 struct filedesc *fdp = p->p_fd;
130 struct file *fp = fdp->fd_ofiles[p->p_retval[0]];
131
132 if (fp->f_type == DTYPE_VNODE)
133 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, p);
134 }
135#ifdef DEBUG
136 printf("Linux-emul(%d): open returns error %d\n",
137 p->p_pid, error);
138#endif
139 return error;
140}
141
142struct linux_flock {
143 short l_type;
144 short l_whence;
145 linux_off_t l_start;
146 linux_off_t l_len;
147 linux_pid_t l_pid;
148};
149
150static void
151linux_to_bsd_flock(struct linux_flock *linux_flock, struct flock *bsd_flock)
152{
153 switch (linux_flock->l_type) {
154 case LINUX_F_RDLCK:
155 bsd_flock->l_type = F_RDLCK;
156 break;
157 case LINUX_F_WRLCK:
158 bsd_flock->l_type = F_WRLCK;
159 break;
160 case LINUX_F_UNLCK:
161 bsd_flock->l_type = F_UNLCK;
162 break;
163 default:
164 bsd_flock->l_type = -1;
165 break;
166 }
167 bsd_flock->l_whence = linux_flock->l_whence;
168 bsd_flock->l_start = (off_t)linux_flock->l_start;
169 bsd_flock->l_len = (off_t)linux_flock->l_len;
170 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
171}
172
173static void
174bsd_to_linux_flock(struct flock *bsd_flock, struct linux_flock *linux_flock)
175{
176 switch (bsd_flock->l_type) {
177 case F_RDLCK:
178 linux_flock->l_type = LINUX_F_RDLCK;
179 break;
180 case F_WRLCK:
181 linux_flock->l_type = LINUX_F_WRLCK;
182 break;
183 case F_UNLCK:
184 linux_flock->l_type = LINUX_F_UNLCK;
185 break;
186 }
187 linux_flock->l_whence = bsd_flock->l_whence;
188 linux_flock->l_start = (linux_off_t)bsd_flock->l_start;
189 linux_flock->l_len = (linux_off_t)bsd_flock->l_len;
190 linux_flock->l_pid = (linux_pid_t)bsd_flock->l_pid;
191}
192
193int
194linux_fcntl(struct proc *p, struct linux_fcntl_args *args)
195{
196 int error, result;
197 struct fcntl_args /* {
198 int fd;
199 int cmd;
200 long arg;
201 } */ fcntl_args;
202 struct linux_flock linux_flock;
203 struct flock *bsd_flock;
204 struct filedesc *fdp;
205 struct file *fp;
206 caddr_t sg;
207
208 sg = stackgap_init();
209 bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(struct flock));
210
211#ifdef DEBUG
212 printf("Linux-emul(%ld): fcntl(%d, %08x, *)\n", (long)p->p_pid,
213 args->fd, args->cmd);
214#endif
215 fcntl_args.fd = args->fd;
216
217 switch (args->cmd) {
218 case LINUX_F_DUPFD:
219 fcntl_args.cmd = F_DUPFD;
220 fcntl_args.arg = args->arg;
221 return fcntl(p, &fcntl_args);
222
223 case LINUX_F_GETFD:
224 fcntl_args.cmd = F_GETFD;
225 return fcntl(p, &fcntl_args);
226
227 case LINUX_F_SETFD:
228 fcntl_args.cmd = F_SETFD;
229 fcntl_args.arg = args->arg;
230 return fcntl(p, &fcntl_args);
231
232 case LINUX_F_GETFL:
233 fcntl_args.cmd = F_GETFL;
234 error = fcntl(p, &fcntl_args);
235 result = p->p_retval[0];
236 p->p_retval[0] = 0;
237 if (result & O_RDONLY) p->p_retval[0] |= LINUX_O_RDONLY;
238 if (result & O_WRONLY) p->p_retval[0] |= LINUX_O_WRONLY;
239 if (result & O_RDWR) p->p_retval[0] |= LINUX_O_RDWR;
240 if (result & O_NDELAY) p->p_retval[0] |= LINUX_O_NONBLOCK;
241 if (result & O_APPEND) p->p_retval[0] |= LINUX_O_APPEND;
242 if (result & O_FSYNC) p->p_retval[0] |= LINUX_O_SYNC;
243 if (result & O_ASYNC) p->p_retval[0] |= LINUX_FASYNC;
244 return error;
245
246 case LINUX_F_SETFL:
247 fcntl_args.arg = 0;
248 if (args->arg & LINUX_O_NDELAY) fcntl_args.arg |= O_NONBLOCK;
249 if (args->arg & LINUX_O_APPEND) fcntl_args.arg |= O_APPEND;
250 if (args->arg & LINUX_O_SYNC) fcntl_args.arg |= O_FSYNC;
251 if (args->arg & LINUX_FASYNC) fcntl_args.arg |= O_ASYNC;
252 fcntl_args.cmd = F_SETFL;
253 return fcntl(p, &fcntl_args);
254
255 case LINUX_F_GETLK:
256 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
257 sizeof(struct linux_flock))))
258 return error;
259 linux_to_bsd_flock(&linux_flock, bsd_flock);
260 fcntl_args.cmd = F_GETLK;
261 fcntl_args.arg = (long)bsd_flock;
262 error = fcntl(p, &fcntl_args);
263 if (error)
264 return error;
265 bsd_to_linux_flock(bsd_flock, &linux_flock);
266 return copyout((caddr_t)&linux_flock, (caddr_t)args->arg,
267 sizeof(struct linux_flock));
268
269 case LINUX_F_SETLK:
270 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
271 sizeof(struct linux_flock))))
272 return error;
273 linux_to_bsd_flock(&linux_flock, bsd_flock);
274 fcntl_args.cmd = F_SETLK;
275 fcntl_args.arg = (long)bsd_flock;
276 return fcntl(p, &fcntl_args);
277
278 case LINUX_F_SETLKW:
279 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
280 sizeof(struct linux_flock))))
281 return error;
282 linux_to_bsd_flock(&linux_flock, bsd_flock);
283 fcntl_args.cmd = F_SETLKW;
284 fcntl_args.arg = (long)bsd_flock;
285 return fcntl(p, &fcntl_args);
286
287 case LINUX_F_GETOWN:
288 fcntl_args.cmd = F_GETOWN;
289 return fcntl(p, &fcntl_args);
290
291 case LINUX_F_SETOWN:
292 /*
293 * XXX some Linux applications depend on F_SETOWN having no
294 * significant effect for pipes (SIGIO is not delivered for
295 * pipes under Linux-2.2.35 at least).
296 */
297 fdp = p->p_fd;
298 if ((u_int)args->fd >= fdp->fd_nfiles ||
299 (fp = fdp->fd_ofiles[args->fd]) == NULL)
300 return EBADF;
301 if (fp->f_type == DTYPE_PIPE)
302 return EINVAL;
303
304 fcntl_args.cmd = F_SETOWN;
305 fcntl_args.arg = args->arg;
306 return fcntl(p, &fcntl_args);
307 }
308 return EINVAL;
309}
310
311int
312linux_lseek(struct proc *p, struct linux_lseek_args *args)
313{
314
315 struct lseek_args /* {
316 int fd;
317 int pad;
318 off_t offset;
319 int whence;
320 } */ tmp_args;
321 int error;
322
323#ifdef DEBUG
324 printf("Linux-emul(%ld): lseek(%d, %ld, %d)\n",
325 (long)p->p_pid, args->fdes, args->off, args->whence);
326#endif
327 tmp_args.fd = args->fdes;
328 tmp_args.offset = (off_t)args->off;
329 tmp_args.whence = args->whence;
330 error = lseek(p, &tmp_args);
331 return error;
332}
333
334#ifndef __alpha__
335int
336linux_llseek(struct proc *p, struct linux_llseek_args *args)
337{
338 struct lseek_args bsd_args;
339 int error;
340 off_t off;
341
342#ifdef DEBUG
343 printf("Linux-emul(%d): llseek(%d, %d:%d, %d)\n",
344 p->p_pid, args->fd, args->ohigh, args->olow, args->whence);
345#endif
346 off = (args->olow) | (((off_t) args->ohigh) << 32);
347
348 bsd_args.fd = args->fd;
349 bsd_args.offset = off;
350 bsd_args.whence = args->whence;
351
352 if ((error = lseek(p, &bsd_args)))
353 return error;
354
355 if ((error = copyout(p->p_retval, (caddr_t)args->res, sizeof (off_t))))
356 return error;
357
358 p->p_retval[0] = 0;
359 return 0;
360}
361#endif /*!__alpha__*/
362
363
364struct linux_dirent {
365 long dino;
366 linux_off_t doff;
367 unsigned short dreclen;
368 char dname[LINUX_NAME_MAX + 1];
369};
370
371#define LINUX_RECLEN(de,namlen) \
372 ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1))
373
374#ifndef __alpha__
375int
376linux_readdir(struct proc *p, struct linux_readdir_args *args)
377{
378 struct linux_getdents_args lda;
379
380 lda.fd = args->fd;
381 lda.dent = args->dent;
382 lda.count = 1;
383 return linux_getdents(p, &lda);
384}
385#endif /*!__alpha__*/
386
387int
388linux_getdents(struct proc *p, struct linux_getdents_args *args)
389{
390 register struct dirent *bdp;
391 struct vnode *vp;
392 caddr_t inp, buf; /* BSD-format */
393 int len, reclen; /* BSD-format */
394 caddr_t outp; /* Linux-format */
395 int resid, linuxreclen=0; /* Linux-format */
396 struct file *fp;
397 struct uio auio;
398 struct iovec aiov;
399 struct vattr va;
400 off_t off;
401 struct linux_dirent linux_dirent;
402 int buflen, error, eofflag, nbytes, justone;
403 u_long *cookies = NULL, *cookiep;
404 int ncookies;
405
406#ifdef DEBUG
407 printf("Linux-emul(%d): getdents(%d, *, %d)\n",
408 p->p_pid, args->fd, args->count);
409#endif
410 if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) {
411 return (error);
412 }
413
414 if ((fp->f_flag & FREAD) == 0)
415 return (EBADF);
416
417 vp = (struct vnode *) fp->f_data;
418
419 if (vp->v_type != VDIR)
420 return (EINVAL);
421
422 if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) {
423 return error;
424 }
425
426 nbytes = args->count;
427 if (nbytes == 1) {
428 nbytes = sizeof (struct linux_dirent);
429 justone = 1;
430 }
431 else
432 justone = 0;
433
434 off = fp->f_offset;
435#define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */
436 buflen = max(DIRBLKSIZ, nbytes);
437 buflen = min(buflen, MAXBSIZE);
438 buf = malloc(buflen, M_TEMP, M_WAITOK);
439 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
440again:
441 aiov.iov_base = buf;
442 aiov.iov_len = buflen;
443 auio.uio_iov = &aiov;
444 auio.uio_iovcnt = 1;
445 auio.uio_rw = UIO_READ;
446 auio.uio_segflg = UIO_SYSSPACE;
447 auio.uio_procp = p;
448 auio.uio_resid = buflen;
449 auio.uio_offset = off;
450
451 if (cookies) {
452 free(cookies, M_TEMP);
453 cookies = NULL;
454 }
455
456 error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies);
457 if (error) {
458 goto out;
459 }
460
461 inp = buf;
462 outp = (caddr_t) args->dent;
463 resid = nbytes;
464 if ((len = buflen - auio.uio_resid) <= 0) {
465 goto eof;
466 }
467
468 cookiep = cookies;
469
470 if (cookies) {
471 /*
472 * When using cookies, the vfs has the option of reading from
473 * a different offset than that supplied (UFS truncates the
474 * offset to a block boundary to make sure that it never reads
475 * partway through a directory entry, even if the directory
476 * has been compacted).
477 */
478 while (len > 0 && ncookies > 0 && *cookiep <= off) {
479 bdp = (struct dirent *) inp;
480 len -= bdp->d_reclen;
481 inp += bdp->d_reclen;
482 cookiep++;
483 ncookies--;
484 }
485 }
486
487 while (len > 0) {
488 if (cookiep && ncookies == 0)
489 break;
490 bdp = (struct dirent *) inp;
491 reclen = bdp->d_reclen;
492 if (reclen & 3) {
493 printf("linux_readdir: reclen=%d\n", reclen);
494 error = EFAULT;
495 goto out;
496 }
497
498 if (bdp->d_fileno == 0) {
499 inp += reclen;
500 if (cookiep) {
501 off = *cookiep++;
502 ncookies--;
503 } else
504 off += reclen;
505 len -= reclen;
506 continue;
507 }
508 linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen);
509 if (reclen > len || resid < linuxreclen) {
510 outp++;
511 break;
512 }
513 linux_dirent.dino = (long) bdp->d_fileno;
514 if (justone) {
515 /*
516 * old linux-style readdir usage.
517 */
518 linux_dirent.doff = (linux_off_t) linuxreclen;
519 linux_dirent.dreclen = (u_short) bdp->d_namlen;
520 } else {
521 if (cookiep)
522 linux_dirent.doff = (linux_off_t)*cookiep;
523 else
524 linux_dirent.doff = (linux_off_t)(off + reclen);
525 linux_dirent.dreclen = (u_short) linuxreclen;
526 }
527 strcpy(linux_dirent.dname, bdp->d_name);
528 if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) {
529 goto out;
530 }
531 inp += reclen;
532 if (cookiep) {
533 off = *cookiep++;
534 ncookies--;
535 } else
536 off += reclen;
537 outp += linuxreclen;
538 resid -= linuxreclen;
539 len -= reclen;
540 if (justone)
541 break;
542 }
543
544 if (outp == (caddr_t) args->dent)
545 goto again;
546 fp->f_offset = off;
547
548 if (justone)
549 nbytes = resid + linuxreclen;
550
551eof:
552 p->p_retval[0] = nbytes - resid;
553out:
554 if (cookies)
555 free(cookies, M_TEMP);
556 VOP_UNLOCK(vp, 0, p);
557 free(buf, M_TEMP);
558 return error;
559}
560
561/*
562 * These exist mainly for hooks for doing /compat/linux translation.
563 */
564
565int
566linux_access(struct proc *p, struct linux_access_args *args)
567{
568 struct access_args bsd;
569 caddr_t sg;
570
571 sg = stackgap_init();
572 CHECKALTEXIST(p, &sg, args->path);
573
574#ifdef DEBUG
575 printf("Linux-emul(%d): access(%s, %d)\n",
576 p->p_pid, args->path, args->flags);
577#endif
578 bsd.path = args->path;
579 bsd.flags = args->flags;
580
581 return access(p, &bsd);
582}
583
584int
585linux_unlink(struct proc *p, struct linux_unlink_args *args)
586{
587 struct unlink_args bsd;
588 caddr_t sg;
589
590 sg = stackgap_init();
591 CHECKALTEXIST(p, &sg, args->path);
592
593#ifdef DEBUG
594 printf("Linux-emul(%d): unlink(%s)\n",
595 p->p_pid, args->path);
596#endif
597 bsd.path = args->path;
598
599 return unlink(p, &bsd);
600}
601
602int
603linux_chdir(struct proc *p, struct linux_chdir_args *args)
604{
605 struct chdir_args bsd;
606 caddr_t sg;
607
608 sg = stackgap_init();
609 CHECKALTEXIST(p, &sg, args->path);
610
611#ifdef DEBUG
612 printf("Linux-emul(%d): chdir(%s)\n",
613 p->p_pid, args->path);
614#endif
615 bsd.path = args->path;
616
617 return chdir(p, &bsd);
618}
619
620int
621linux_chmod(struct proc *p, struct linux_chmod_args *args)
622{
623 struct chmod_args bsd;
624 caddr_t sg;
625
626 sg = stackgap_init();
627 CHECKALTEXIST(p, &sg, args->path);
628
629#ifdef DEBUG
630 printf("Linux-emul(%d): chmod(%s, %d)\n",
631 p->p_pid, args->path, args->mode);
632#endif
633 bsd.path = args->path;
634 bsd.mode = args->mode;
635
636 return chmod(p, &bsd);
637}
638
639int
640linux_chown(struct proc *p, struct linux_chown_args *args)
641{
642 struct chown_args bsd;
643 caddr_t sg;
644
645 sg = stackgap_init();
646 CHECKALTEXIST(p, &sg, args->path);
647
648#ifdef DEBUG
649 printf("Linux-emul(%d): chown(%s, %d, %d)\n",
650 p->p_pid, args->path, args->uid, args->gid);
651#endif
652 bsd.path = args->path;
653 /* XXX size casts here */
654 bsd.uid = args->uid;
655 bsd.gid = args->gid;
656
657 return chown(p, &bsd);
658}
659
660int
661linux_lchown(struct proc *p, struct linux_lchown_args *args)
662{
663 struct lchown_args bsd;
664 caddr_t sg;
665
666 sg = stackgap_init();
667 CHECKALTEXIST(p, &sg, args->path);
668
669#ifdef DEBUG
670 printf("Linux-emul(%d): lchown(%s, %d, %d)\n",
671 p->p_pid, args->path, args->uid, args->gid);
672#endif
673 bsd.path = args->path;
674 /* XXX size casts here */
675 bsd.uid = args->uid;
676 bsd.gid = args->gid;
677
678 return lchown(p, &bsd);
679}
680
681int
682linux_mkdir(struct proc *p, struct linux_mkdir_args *args)
683{
684 struct mkdir_args bsd;
685 caddr_t sg;
686
687 sg = stackgap_init();
688 CHECKALTCREAT(p, &sg, args->path);
689
690#ifdef DEBUG
691 printf("Linux-emul(%d): mkdir(%s, %d)\n",
692 p->p_pid, args->path, args->mode);
693#endif
694 bsd.path = args->path;
695 bsd.mode = args->mode;
696
697 return mkdir(p, &bsd);
698}
699
700int
701linux_rmdir(struct proc *p, struct linux_rmdir_args *args)
702{
703 struct rmdir_args bsd;
704 caddr_t sg;
705
706 sg = stackgap_init();
707 CHECKALTEXIST(p, &sg, args->path);
708
709#ifdef DEBUG
710 printf("Linux-emul(%d): rmdir(%s)\n",
711 p->p_pid, args->path);
712#endif
713 bsd.path = args->path;
714
715 return rmdir(p, &bsd);
716}
717
718int
719linux_rename(struct proc *p, struct linux_rename_args *args)
720{
721 struct rename_args bsd;
722 caddr_t sg;
723
724 sg = stackgap_init();
725 CHECKALTEXIST(p, &sg, args->from);
726 CHECKALTCREAT(p, &sg, args->to);
727
728#ifdef DEBUG
729 printf("Linux-emul(%d): rename(%s, %s)\n",
730 p->p_pid, args->from, args->to);
731#endif
732 bsd.from = args->from;
733 bsd.to = args->to;
734
735 return rename(p, &bsd);
736}
737
738int
739linux_symlink(struct proc *p, struct linux_symlink_args *args)
740{
741 struct symlink_args bsd;
742 caddr_t sg;
743
744 sg = stackgap_init();
745 CHECKALTEXIST(p, &sg, args->path);
746 CHECKALTCREAT(p, &sg, args->to);
747
748#ifdef DEBUG
749 printf("Linux-emul(%d): symlink(%s, %s)\n",
750 p->p_pid, args->path, args->to);
751#endif
752 bsd.path = args->path;
753 bsd.link = args->to;
754
755 return symlink(p, &bsd);
756}
757
758int
759linux_readlink(struct proc *p, struct linux_readlink_args *args)
760{
761 struct readlink_args bsd;
762 caddr_t sg;
763
764 sg = stackgap_init();
765 CHECKALTEXIST(p, &sg, args->name);
766
767#ifdef DEBUG
768 printf("Linux-emul(%ld): readlink(%s, %p, %d)\n",
769 (long)p->p_pid, args->name, (void *)args->buf, args->count);
770#endif
771 bsd.path = args->name;
772 bsd.buf = args->buf;
773 bsd.count = args->count;
774
775 return readlink(p, &bsd);
776}
777
778int
779linux_truncate(struct proc *p, struct linux_truncate_args *args)
780{
781 struct truncate_args bsd;
782 caddr_t sg;
783
784 sg = stackgap_init();
785 CHECKALTEXIST(p, &sg, args->path);
786
787#ifdef DEBUG
788 printf("Linux-emul(%d): truncate(%s, %ld)\n",
789 p->p_pid, args->path, args->length);
790#endif
791 bsd.path = args->path;
792 bsd.length = args->length;
793
794 return truncate(p, &bsd);
795}
796
797int
798linux_link(struct proc *p, struct linux_link_args *args)
799{
800 struct link_args bsd;
801 caddr_t sg;
802
803 sg = stackgap_init();
804 CHECKALTEXIST(p, &sg, args->path);
805 CHECKALTCREAT(p, &sg, args->to);
806
807#ifdef DEBUG
808 printf("Linux-emul(%d): link(%s, %s)\n", p->p_pid, args->path, args->to);
809#endif
810
811 bsd.path = args->path;
812 bsd.link = args->to;
813
814 return link(p, &bsd);
815}
816
817int
818linux_getcwd(struct proc *p, struct linux_getcwd_args *args)
819{
820 struct __getcwd_args bsd;
821 caddr_t sg;
822 int error, len;
823
824#ifdef DEBUG
825 printf("Linux-emul(%ld): getcwd(%p, %ld)\n", (long)p->p_pid,
826 args->buf, args->bufsize);
827#endif
828
829 sg = stackgap_init();
830 bsd.buf = stackgap_alloc(&sg, SPARE_USRSPACE);
831 bsd.buflen = SPARE_USRSPACE;
832 error = __getcwd(p, &bsd);
833 if (!error) {
834 len = strlen(bsd.buf) + 1;
835 if (len <= args->bufsize) {
836 p->p_retval[0] = len;
837 error = copyout(bsd.buf, args->buf, len);
838 }
839 else
840 error = ERANGE;
841 }
842 return (error);
843}
844
845#ifndef __alpha__
846int
847linux_fdatasync(p, uap)
848 struct proc *p;
849 struct linux_fdatasync_args *uap;
850{
851 struct fsync_args bsd;
852
853 bsd.fd = uap->fd;
854 return fsync(p, &bsd);
855}
856#endif /*!__alpha__*/
857
858int
859linux_pread(p, uap)
860 struct proc *p;
861 struct linux_pread_args *uap;
862{
863 struct pread_args bsd;
864
865 bsd.fd = uap->fd;
866 bsd.buf = uap->buf;
867 bsd.nbyte = uap->nbyte;
868 bsd.offset = uap->offset;
869 return pread(p, &bsd);
870}
871
872int
873linux_pwrite(p, uap)
874 struct proc *p;
875 struct linux_pwrite_args *uap;
876{
877 struct pwrite_args bsd;
878
879 bsd.fd = uap->fd;
880 bsd.buf = uap->buf;
881 bsd.nbyte = uap->nbyte;
882 bsd.offset = uap->offset;
883 return pwrite(p, &bsd);
884}
2 * Copyright (c) 1994-1995 S�ren 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 withough 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 * $FreeBSD: head/sys/compat/linux/linux_file.c 69539 2000-12-03 01:30:31Z marcel $
29 */
30
31#include "opt_compat.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/sysproto.h>
36#include <sys/fcntl.h>
37#include <sys/file.h>
38#include <sys/filedesc.h>
39#include <sys/lock.h>
40#include <sys/proc.h>
41#include <sys/vnode.h>
42#include <sys/malloc.h>
43#include <sys/dirent.h>
44#include <sys/conf.h>
45#include <sys/tty.h>
46
47#include <machine/../linux/linux.h>
48#include <machine/../linux/linux_proto.h>
49#include <compat/linux/linux_util.h>
50
51#ifndef __alpha__
52int
53linux_creat(struct proc *p, struct linux_creat_args *args)
54{
55 struct open_args /* {
56 char *path;
57 int flags;
58 int mode;
59 } */ bsd_open_args;
60 caddr_t sg;
61
62 sg = stackgap_init();
63 CHECKALTCREAT(p, &sg, args->path);
64
65#ifdef DEBUG
66 printf("Linux-emul(%d): creat(%s, %d)\n",
67 p->p_pid, args->path, args->mode);
68#endif
69 bsd_open_args.path = args->path;
70 bsd_open_args.mode = args->mode;
71 bsd_open_args.flags = O_WRONLY | O_CREAT | O_TRUNC;
72 return open(p, &bsd_open_args);
73}
74#endif /*!__alpha__*/
75
76int
77linux_open(struct proc *p, struct linux_open_args *args)
78{
79 struct open_args /* {
80 char *path;
81 int flags;
82 int mode;
83 } */ bsd_open_args;
84 int error;
85 caddr_t sg;
86
87 sg = stackgap_init();
88
89 if (args->flags & LINUX_O_CREAT)
90 CHECKALTCREAT(p, &sg, args->path);
91 else
92 CHECKALTEXIST(p, &sg, args->path);
93
94#ifdef DEBUG
95 printf("Linux-emul(%d): open(%s, 0x%x, 0x%x)\n",
96 p->p_pid, args->path, args->flags, args->mode);
97#endif
98 bsd_open_args.flags = 0;
99 if (args->flags & LINUX_O_RDONLY)
100 bsd_open_args.flags |= O_RDONLY;
101 if (args->flags & LINUX_O_WRONLY)
102 bsd_open_args.flags |= O_WRONLY;
103 if (args->flags & LINUX_O_RDWR)
104 bsd_open_args.flags |= O_RDWR;
105 if (args->flags & LINUX_O_NDELAY)
106 bsd_open_args.flags |= O_NONBLOCK;
107 if (args->flags & LINUX_O_APPEND)
108 bsd_open_args.flags |= O_APPEND;
109 if (args->flags & LINUX_O_SYNC)
110 bsd_open_args.flags |= O_FSYNC;
111 if (args->flags & LINUX_O_NONBLOCK)
112 bsd_open_args.flags |= O_NONBLOCK;
113 if (args->flags & LINUX_FASYNC)
114 bsd_open_args.flags |= O_ASYNC;
115 if (args->flags & LINUX_O_CREAT)
116 bsd_open_args.flags |= O_CREAT;
117 if (args->flags & LINUX_O_TRUNC)
118 bsd_open_args.flags |= O_TRUNC;
119 if (args->flags & LINUX_O_EXCL)
120 bsd_open_args.flags |= O_EXCL;
121 if (args->flags & LINUX_O_NOCTTY)
122 bsd_open_args.flags |= O_NOCTTY;
123 bsd_open_args.path = args->path;
124 bsd_open_args.mode = args->mode;
125
126 error = open(p, &bsd_open_args);
127 if (!error && !(bsd_open_args.flags & O_NOCTTY) &&
128 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
129 struct filedesc *fdp = p->p_fd;
130 struct file *fp = fdp->fd_ofiles[p->p_retval[0]];
131
132 if (fp->f_type == DTYPE_VNODE)
133 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, p);
134 }
135#ifdef DEBUG
136 printf("Linux-emul(%d): open returns error %d\n",
137 p->p_pid, error);
138#endif
139 return error;
140}
141
142struct linux_flock {
143 short l_type;
144 short l_whence;
145 linux_off_t l_start;
146 linux_off_t l_len;
147 linux_pid_t l_pid;
148};
149
150static void
151linux_to_bsd_flock(struct linux_flock *linux_flock, struct flock *bsd_flock)
152{
153 switch (linux_flock->l_type) {
154 case LINUX_F_RDLCK:
155 bsd_flock->l_type = F_RDLCK;
156 break;
157 case LINUX_F_WRLCK:
158 bsd_flock->l_type = F_WRLCK;
159 break;
160 case LINUX_F_UNLCK:
161 bsd_flock->l_type = F_UNLCK;
162 break;
163 default:
164 bsd_flock->l_type = -1;
165 break;
166 }
167 bsd_flock->l_whence = linux_flock->l_whence;
168 bsd_flock->l_start = (off_t)linux_flock->l_start;
169 bsd_flock->l_len = (off_t)linux_flock->l_len;
170 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
171}
172
173static void
174bsd_to_linux_flock(struct flock *bsd_flock, struct linux_flock *linux_flock)
175{
176 switch (bsd_flock->l_type) {
177 case F_RDLCK:
178 linux_flock->l_type = LINUX_F_RDLCK;
179 break;
180 case F_WRLCK:
181 linux_flock->l_type = LINUX_F_WRLCK;
182 break;
183 case F_UNLCK:
184 linux_flock->l_type = LINUX_F_UNLCK;
185 break;
186 }
187 linux_flock->l_whence = bsd_flock->l_whence;
188 linux_flock->l_start = (linux_off_t)bsd_flock->l_start;
189 linux_flock->l_len = (linux_off_t)bsd_flock->l_len;
190 linux_flock->l_pid = (linux_pid_t)bsd_flock->l_pid;
191}
192
193int
194linux_fcntl(struct proc *p, struct linux_fcntl_args *args)
195{
196 int error, result;
197 struct fcntl_args /* {
198 int fd;
199 int cmd;
200 long arg;
201 } */ fcntl_args;
202 struct linux_flock linux_flock;
203 struct flock *bsd_flock;
204 struct filedesc *fdp;
205 struct file *fp;
206 caddr_t sg;
207
208 sg = stackgap_init();
209 bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(struct flock));
210
211#ifdef DEBUG
212 printf("Linux-emul(%ld): fcntl(%d, %08x, *)\n", (long)p->p_pid,
213 args->fd, args->cmd);
214#endif
215 fcntl_args.fd = args->fd;
216
217 switch (args->cmd) {
218 case LINUX_F_DUPFD:
219 fcntl_args.cmd = F_DUPFD;
220 fcntl_args.arg = args->arg;
221 return fcntl(p, &fcntl_args);
222
223 case LINUX_F_GETFD:
224 fcntl_args.cmd = F_GETFD;
225 return fcntl(p, &fcntl_args);
226
227 case LINUX_F_SETFD:
228 fcntl_args.cmd = F_SETFD;
229 fcntl_args.arg = args->arg;
230 return fcntl(p, &fcntl_args);
231
232 case LINUX_F_GETFL:
233 fcntl_args.cmd = F_GETFL;
234 error = fcntl(p, &fcntl_args);
235 result = p->p_retval[0];
236 p->p_retval[0] = 0;
237 if (result & O_RDONLY) p->p_retval[0] |= LINUX_O_RDONLY;
238 if (result & O_WRONLY) p->p_retval[0] |= LINUX_O_WRONLY;
239 if (result & O_RDWR) p->p_retval[0] |= LINUX_O_RDWR;
240 if (result & O_NDELAY) p->p_retval[0] |= LINUX_O_NONBLOCK;
241 if (result & O_APPEND) p->p_retval[0] |= LINUX_O_APPEND;
242 if (result & O_FSYNC) p->p_retval[0] |= LINUX_O_SYNC;
243 if (result & O_ASYNC) p->p_retval[0] |= LINUX_FASYNC;
244 return error;
245
246 case LINUX_F_SETFL:
247 fcntl_args.arg = 0;
248 if (args->arg & LINUX_O_NDELAY) fcntl_args.arg |= O_NONBLOCK;
249 if (args->arg & LINUX_O_APPEND) fcntl_args.arg |= O_APPEND;
250 if (args->arg & LINUX_O_SYNC) fcntl_args.arg |= O_FSYNC;
251 if (args->arg & LINUX_FASYNC) fcntl_args.arg |= O_ASYNC;
252 fcntl_args.cmd = F_SETFL;
253 return fcntl(p, &fcntl_args);
254
255 case LINUX_F_GETLK:
256 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
257 sizeof(struct linux_flock))))
258 return error;
259 linux_to_bsd_flock(&linux_flock, bsd_flock);
260 fcntl_args.cmd = F_GETLK;
261 fcntl_args.arg = (long)bsd_flock;
262 error = fcntl(p, &fcntl_args);
263 if (error)
264 return error;
265 bsd_to_linux_flock(bsd_flock, &linux_flock);
266 return copyout((caddr_t)&linux_flock, (caddr_t)args->arg,
267 sizeof(struct linux_flock));
268
269 case LINUX_F_SETLK:
270 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
271 sizeof(struct linux_flock))))
272 return error;
273 linux_to_bsd_flock(&linux_flock, bsd_flock);
274 fcntl_args.cmd = F_SETLK;
275 fcntl_args.arg = (long)bsd_flock;
276 return fcntl(p, &fcntl_args);
277
278 case LINUX_F_SETLKW:
279 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
280 sizeof(struct linux_flock))))
281 return error;
282 linux_to_bsd_flock(&linux_flock, bsd_flock);
283 fcntl_args.cmd = F_SETLKW;
284 fcntl_args.arg = (long)bsd_flock;
285 return fcntl(p, &fcntl_args);
286
287 case LINUX_F_GETOWN:
288 fcntl_args.cmd = F_GETOWN;
289 return fcntl(p, &fcntl_args);
290
291 case LINUX_F_SETOWN:
292 /*
293 * XXX some Linux applications depend on F_SETOWN having no
294 * significant effect for pipes (SIGIO is not delivered for
295 * pipes under Linux-2.2.35 at least).
296 */
297 fdp = p->p_fd;
298 if ((u_int)args->fd >= fdp->fd_nfiles ||
299 (fp = fdp->fd_ofiles[args->fd]) == NULL)
300 return EBADF;
301 if (fp->f_type == DTYPE_PIPE)
302 return EINVAL;
303
304 fcntl_args.cmd = F_SETOWN;
305 fcntl_args.arg = args->arg;
306 return fcntl(p, &fcntl_args);
307 }
308 return EINVAL;
309}
310
311int
312linux_lseek(struct proc *p, struct linux_lseek_args *args)
313{
314
315 struct lseek_args /* {
316 int fd;
317 int pad;
318 off_t offset;
319 int whence;
320 } */ tmp_args;
321 int error;
322
323#ifdef DEBUG
324 printf("Linux-emul(%ld): lseek(%d, %ld, %d)\n",
325 (long)p->p_pid, args->fdes, args->off, args->whence);
326#endif
327 tmp_args.fd = args->fdes;
328 tmp_args.offset = (off_t)args->off;
329 tmp_args.whence = args->whence;
330 error = lseek(p, &tmp_args);
331 return error;
332}
333
334#ifndef __alpha__
335int
336linux_llseek(struct proc *p, struct linux_llseek_args *args)
337{
338 struct lseek_args bsd_args;
339 int error;
340 off_t off;
341
342#ifdef DEBUG
343 printf("Linux-emul(%d): llseek(%d, %d:%d, %d)\n",
344 p->p_pid, args->fd, args->ohigh, args->olow, args->whence);
345#endif
346 off = (args->olow) | (((off_t) args->ohigh) << 32);
347
348 bsd_args.fd = args->fd;
349 bsd_args.offset = off;
350 bsd_args.whence = args->whence;
351
352 if ((error = lseek(p, &bsd_args)))
353 return error;
354
355 if ((error = copyout(p->p_retval, (caddr_t)args->res, sizeof (off_t))))
356 return error;
357
358 p->p_retval[0] = 0;
359 return 0;
360}
361#endif /*!__alpha__*/
362
363
364struct linux_dirent {
365 long dino;
366 linux_off_t doff;
367 unsigned short dreclen;
368 char dname[LINUX_NAME_MAX + 1];
369};
370
371#define LINUX_RECLEN(de,namlen) \
372 ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1))
373
374#ifndef __alpha__
375int
376linux_readdir(struct proc *p, struct linux_readdir_args *args)
377{
378 struct linux_getdents_args lda;
379
380 lda.fd = args->fd;
381 lda.dent = args->dent;
382 lda.count = 1;
383 return linux_getdents(p, &lda);
384}
385#endif /*!__alpha__*/
386
387int
388linux_getdents(struct proc *p, struct linux_getdents_args *args)
389{
390 register struct dirent *bdp;
391 struct vnode *vp;
392 caddr_t inp, buf; /* BSD-format */
393 int len, reclen; /* BSD-format */
394 caddr_t outp; /* Linux-format */
395 int resid, linuxreclen=0; /* Linux-format */
396 struct file *fp;
397 struct uio auio;
398 struct iovec aiov;
399 struct vattr va;
400 off_t off;
401 struct linux_dirent linux_dirent;
402 int buflen, error, eofflag, nbytes, justone;
403 u_long *cookies = NULL, *cookiep;
404 int ncookies;
405
406#ifdef DEBUG
407 printf("Linux-emul(%d): getdents(%d, *, %d)\n",
408 p->p_pid, args->fd, args->count);
409#endif
410 if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) {
411 return (error);
412 }
413
414 if ((fp->f_flag & FREAD) == 0)
415 return (EBADF);
416
417 vp = (struct vnode *) fp->f_data;
418
419 if (vp->v_type != VDIR)
420 return (EINVAL);
421
422 if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) {
423 return error;
424 }
425
426 nbytes = args->count;
427 if (nbytes == 1) {
428 nbytes = sizeof (struct linux_dirent);
429 justone = 1;
430 }
431 else
432 justone = 0;
433
434 off = fp->f_offset;
435#define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */
436 buflen = max(DIRBLKSIZ, nbytes);
437 buflen = min(buflen, MAXBSIZE);
438 buf = malloc(buflen, M_TEMP, M_WAITOK);
439 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
440again:
441 aiov.iov_base = buf;
442 aiov.iov_len = buflen;
443 auio.uio_iov = &aiov;
444 auio.uio_iovcnt = 1;
445 auio.uio_rw = UIO_READ;
446 auio.uio_segflg = UIO_SYSSPACE;
447 auio.uio_procp = p;
448 auio.uio_resid = buflen;
449 auio.uio_offset = off;
450
451 if (cookies) {
452 free(cookies, M_TEMP);
453 cookies = NULL;
454 }
455
456 error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies);
457 if (error) {
458 goto out;
459 }
460
461 inp = buf;
462 outp = (caddr_t) args->dent;
463 resid = nbytes;
464 if ((len = buflen - auio.uio_resid) <= 0) {
465 goto eof;
466 }
467
468 cookiep = cookies;
469
470 if (cookies) {
471 /*
472 * When using cookies, the vfs has the option of reading from
473 * a different offset than that supplied (UFS truncates the
474 * offset to a block boundary to make sure that it never reads
475 * partway through a directory entry, even if the directory
476 * has been compacted).
477 */
478 while (len > 0 && ncookies > 0 && *cookiep <= off) {
479 bdp = (struct dirent *) inp;
480 len -= bdp->d_reclen;
481 inp += bdp->d_reclen;
482 cookiep++;
483 ncookies--;
484 }
485 }
486
487 while (len > 0) {
488 if (cookiep && ncookies == 0)
489 break;
490 bdp = (struct dirent *) inp;
491 reclen = bdp->d_reclen;
492 if (reclen & 3) {
493 printf("linux_readdir: reclen=%d\n", reclen);
494 error = EFAULT;
495 goto out;
496 }
497
498 if (bdp->d_fileno == 0) {
499 inp += reclen;
500 if (cookiep) {
501 off = *cookiep++;
502 ncookies--;
503 } else
504 off += reclen;
505 len -= reclen;
506 continue;
507 }
508 linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen);
509 if (reclen > len || resid < linuxreclen) {
510 outp++;
511 break;
512 }
513 linux_dirent.dino = (long) bdp->d_fileno;
514 if (justone) {
515 /*
516 * old linux-style readdir usage.
517 */
518 linux_dirent.doff = (linux_off_t) linuxreclen;
519 linux_dirent.dreclen = (u_short) bdp->d_namlen;
520 } else {
521 if (cookiep)
522 linux_dirent.doff = (linux_off_t)*cookiep;
523 else
524 linux_dirent.doff = (linux_off_t)(off + reclen);
525 linux_dirent.dreclen = (u_short) linuxreclen;
526 }
527 strcpy(linux_dirent.dname, bdp->d_name);
528 if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) {
529 goto out;
530 }
531 inp += reclen;
532 if (cookiep) {
533 off = *cookiep++;
534 ncookies--;
535 } else
536 off += reclen;
537 outp += linuxreclen;
538 resid -= linuxreclen;
539 len -= reclen;
540 if (justone)
541 break;
542 }
543
544 if (outp == (caddr_t) args->dent)
545 goto again;
546 fp->f_offset = off;
547
548 if (justone)
549 nbytes = resid + linuxreclen;
550
551eof:
552 p->p_retval[0] = nbytes - resid;
553out:
554 if (cookies)
555 free(cookies, M_TEMP);
556 VOP_UNLOCK(vp, 0, p);
557 free(buf, M_TEMP);
558 return error;
559}
560
561/*
562 * These exist mainly for hooks for doing /compat/linux translation.
563 */
564
565int
566linux_access(struct proc *p, struct linux_access_args *args)
567{
568 struct access_args bsd;
569 caddr_t sg;
570
571 sg = stackgap_init();
572 CHECKALTEXIST(p, &sg, args->path);
573
574#ifdef DEBUG
575 printf("Linux-emul(%d): access(%s, %d)\n",
576 p->p_pid, args->path, args->flags);
577#endif
578 bsd.path = args->path;
579 bsd.flags = args->flags;
580
581 return access(p, &bsd);
582}
583
584int
585linux_unlink(struct proc *p, struct linux_unlink_args *args)
586{
587 struct unlink_args bsd;
588 caddr_t sg;
589
590 sg = stackgap_init();
591 CHECKALTEXIST(p, &sg, args->path);
592
593#ifdef DEBUG
594 printf("Linux-emul(%d): unlink(%s)\n",
595 p->p_pid, args->path);
596#endif
597 bsd.path = args->path;
598
599 return unlink(p, &bsd);
600}
601
602int
603linux_chdir(struct proc *p, struct linux_chdir_args *args)
604{
605 struct chdir_args bsd;
606 caddr_t sg;
607
608 sg = stackgap_init();
609 CHECKALTEXIST(p, &sg, args->path);
610
611#ifdef DEBUG
612 printf("Linux-emul(%d): chdir(%s)\n",
613 p->p_pid, args->path);
614#endif
615 bsd.path = args->path;
616
617 return chdir(p, &bsd);
618}
619
620int
621linux_chmod(struct proc *p, struct linux_chmod_args *args)
622{
623 struct chmod_args bsd;
624 caddr_t sg;
625
626 sg = stackgap_init();
627 CHECKALTEXIST(p, &sg, args->path);
628
629#ifdef DEBUG
630 printf("Linux-emul(%d): chmod(%s, %d)\n",
631 p->p_pid, args->path, args->mode);
632#endif
633 bsd.path = args->path;
634 bsd.mode = args->mode;
635
636 return chmod(p, &bsd);
637}
638
639int
640linux_chown(struct proc *p, struct linux_chown_args *args)
641{
642 struct chown_args bsd;
643 caddr_t sg;
644
645 sg = stackgap_init();
646 CHECKALTEXIST(p, &sg, args->path);
647
648#ifdef DEBUG
649 printf("Linux-emul(%d): chown(%s, %d, %d)\n",
650 p->p_pid, args->path, args->uid, args->gid);
651#endif
652 bsd.path = args->path;
653 /* XXX size casts here */
654 bsd.uid = args->uid;
655 bsd.gid = args->gid;
656
657 return chown(p, &bsd);
658}
659
660int
661linux_lchown(struct proc *p, struct linux_lchown_args *args)
662{
663 struct lchown_args bsd;
664 caddr_t sg;
665
666 sg = stackgap_init();
667 CHECKALTEXIST(p, &sg, args->path);
668
669#ifdef DEBUG
670 printf("Linux-emul(%d): lchown(%s, %d, %d)\n",
671 p->p_pid, args->path, args->uid, args->gid);
672#endif
673 bsd.path = args->path;
674 /* XXX size casts here */
675 bsd.uid = args->uid;
676 bsd.gid = args->gid;
677
678 return lchown(p, &bsd);
679}
680
681int
682linux_mkdir(struct proc *p, struct linux_mkdir_args *args)
683{
684 struct mkdir_args bsd;
685 caddr_t sg;
686
687 sg = stackgap_init();
688 CHECKALTCREAT(p, &sg, args->path);
689
690#ifdef DEBUG
691 printf("Linux-emul(%d): mkdir(%s, %d)\n",
692 p->p_pid, args->path, args->mode);
693#endif
694 bsd.path = args->path;
695 bsd.mode = args->mode;
696
697 return mkdir(p, &bsd);
698}
699
700int
701linux_rmdir(struct proc *p, struct linux_rmdir_args *args)
702{
703 struct rmdir_args bsd;
704 caddr_t sg;
705
706 sg = stackgap_init();
707 CHECKALTEXIST(p, &sg, args->path);
708
709#ifdef DEBUG
710 printf("Linux-emul(%d): rmdir(%s)\n",
711 p->p_pid, args->path);
712#endif
713 bsd.path = args->path;
714
715 return rmdir(p, &bsd);
716}
717
718int
719linux_rename(struct proc *p, struct linux_rename_args *args)
720{
721 struct rename_args bsd;
722 caddr_t sg;
723
724 sg = stackgap_init();
725 CHECKALTEXIST(p, &sg, args->from);
726 CHECKALTCREAT(p, &sg, args->to);
727
728#ifdef DEBUG
729 printf("Linux-emul(%d): rename(%s, %s)\n",
730 p->p_pid, args->from, args->to);
731#endif
732 bsd.from = args->from;
733 bsd.to = args->to;
734
735 return rename(p, &bsd);
736}
737
738int
739linux_symlink(struct proc *p, struct linux_symlink_args *args)
740{
741 struct symlink_args bsd;
742 caddr_t sg;
743
744 sg = stackgap_init();
745 CHECKALTEXIST(p, &sg, args->path);
746 CHECKALTCREAT(p, &sg, args->to);
747
748#ifdef DEBUG
749 printf("Linux-emul(%d): symlink(%s, %s)\n",
750 p->p_pid, args->path, args->to);
751#endif
752 bsd.path = args->path;
753 bsd.link = args->to;
754
755 return symlink(p, &bsd);
756}
757
758int
759linux_readlink(struct proc *p, struct linux_readlink_args *args)
760{
761 struct readlink_args bsd;
762 caddr_t sg;
763
764 sg = stackgap_init();
765 CHECKALTEXIST(p, &sg, args->name);
766
767#ifdef DEBUG
768 printf("Linux-emul(%ld): readlink(%s, %p, %d)\n",
769 (long)p->p_pid, args->name, (void *)args->buf, args->count);
770#endif
771 bsd.path = args->name;
772 bsd.buf = args->buf;
773 bsd.count = args->count;
774
775 return readlink(p, &bsd);
776}
777
778int
779linux_truncate(struct proc *p, struct linux_truncate_args *args)
780{
781 struct truncate_args bsd;
782 caddr_t sg;
783
784 sg = stackgap_init();
785 CHECKALTEXIST(p, &sg, args->path);
786
787#ifdef DEBUG
788 printf("Linux-emul(%d): truncate(%s, %ld)\n",
789 p->p_pid, args->path, args->length);
790#endif
791 bsd.path = args->path;
792 bsd.length = args->length;
793
794 return truncate(p, &bsd);
795}
796
797int
798linux_link(struct proc *p, struct linux_link_args *args)
799{
800 struct link_args bsd;
801 caddr_t sg;
802
803 sg = stackgap_init();
804 CHECKALTEXIST(p, &sg, args->path);
805 CHECKALTCREAT(p, &sg, args->to);
806
807#ifdef DEBUG
808 printf("Linux-emul(%d): link(%s, %s)\n", p->p_pid, args->path, args->to);
809#endif
810
811 bsd.path = args->path;
812 bsd.link = args->to;
813
814 return link(p, &bsd);
815}
816
817int
818linux_getcwd(struct proc *p, struct linux_getcwd_args *args)
819{
820 struct __getcwd_args bsd;
821 caddr_t sg;
822 int error, len;
823
824#ifdef DEBUG
825 printf("Linux-emul(%ld): getcwd(%p, %ld)\n", (long)p->p_pid,
826 args->buf, args->bufsize);
827#endif
828
829 sg = stackgap_init();
830 bsd.buf = stackgap_alloc(&sg, SPARE_USRSPACE);
831 bsd.buflen = SPARE_USRSPACE;
832 error = __getcwd(p, &bsd);
833 if (!error) {
834 len = strlen(bsd.buf) + 1;
835 if (len <= args->bufsize) {
836 p->p_retval[0] = len;
837 error = copyout(bsd.buf, args->buf, len);
838 }
839 else
840 error = ERANGE;
841 }
842 return (error);
843}
844
845#ifndef __alpha__
846int
847linux_fdatasync(p, uap)
848 struct proc *p;
849 struct linux_fdatasync_args *uap;
850{
851 struct fsync_args bsd;
852
853 bsd.fd = uap->fd;
854 return fsync(p, &bsd);
855}
856#endif /*!__alpha__*/
857
858int
859linux_pread(p, uap)
860 struct proc *p;
861 struct linux_pread_args *uap;
862{
863 struct pread_args bsd;
864
865 bsd.fd = uap->fd;
866 bsd.buf = uap->buf;
867 bsd.nbyte = uap->nbyte;
868 bsd.offset = uap->offset;
869 return pread(p, &bsd);
870}
871
872int
873linux_pwrite(p, uap)
874 struct proc *p;
875 struct linux_pwrite_args *uap;
876{
877 struct pwrite_args bsd;
878
879 bsd.fd = uap->fd;
880 bsd.buf = uap->buf;
881 bsd.nbyte = uap->nbyte;
882 bsd.offset = uap->offset;
883 return pwrite(p, &bsd);
884}