xref: /qemu/bsd-user/bsd-file.h (revision e4e5cb4a)
1 /*
2  *  file related system call shims and definitions
3  *
4  *  Copyright (c) 2013 Stacey D. Son
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 2 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #ifndef BSD_FILE_H
21 #define BSD_FILE_H
22 
23 #include "qemu/path.h"
24 
25 #define LOCK_PATH(p, arg)                   \
26 do {                                        \
27     (p) = lock_user_string(arg);            \
28     if ((p) == NULL) {                      \
29         return -TARGET_EFAULT;              \
30     }                                       \
31 } while (0)
32 
33 #define UNLOCK_PATH(p, arg)     unlock_user(p, arg, 0)
34 
35 #define LOCK_PATH2(p1, arg1, p2, arg2)      \
36 do {                                        \
37     (p1) = lock_user_string(arg1);          \
38     if ((p1) == NULL) {                     \
39         return -TARGET_EFAULT;              \
40     }                                       \
41     (p2) = lock_user_string(arg2);          \
42     if ((p2) == NULL) {                     \
43         unlock_user(p1, arg1, 0);           \
44         return -TARGET_EFAULT;              \
45     }                                       \
46 } while (0)
47 
48 #define UNLOCK_PATH2(p1, arg1, p2, arg2)    \
49 do {                                        \
50     unlock_user(p2, arg2, 0);               \
51     unlock_user(p1, arg1, 0);               \
52 } while (0)
53 
54 struct iovec *lock_iovec(int type, abi_ulong target_addr, int count, int copy);
55 void unlock_iovec(struct iovec *vec, abi_ulong target_addr, int count, int copy);
56 
57 int safe_open(const char *path, int flags, mode_t mode);
58 int safe_openat(int fd, const char *path, int flags, mode_t mode);
59 
60 ssize_t safe_read(int fd, void *buf, size_t nbytes);
61 ssize_t safe_pread(int fd, void *buf, size_t nbytes, off_t offset);
62 ssize_t safe_readv(int fd, const struct iovec *iov, int iovcnt);
63 ssize_t safe_preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset);
64 
65 ssize_t safe_write(int fd, void *buf, size_t nbytes);
66 ssize_t safe_pwrite(int fd, void *buf, size_t nbytes, off_t offset);
67 ssize_t safe_writev(int fd, const struct iovec *iov, int iovcnt);
68 ssize_t safe_pwritev(int fd, const struct iovec *iov, int iovcnt, off_t offset);
69 
70 /* read(2) */
do_bsd_read(abi_long arg1,abi_long arg2,abi_long arg3)71 static abi_long do_bsd_read(abi_long arg1, abi_long arg2, abi_long arg3)
72 {
73     abi_long ret;
74     void *p;
75 
76     p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
77     if (p == NULL) {
78         return -TARGET_EFAULT;
79     }
80     ret = get_errno(safe_read(arg1, p, arg3));
81     unlock_user(p, arg2, ret);
82 
83     return ret;
84 }
85 
86 /* pread(2) */
do_bsd_pread(void * cpu_env,abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4,abi_long arg5,abi_long arg6)87 static abi_long do_bsd_pread(void *cpu_env, abi_long arg1,
88     abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6)
89 {
90     abi_long ret;
91     void *p;
92 
93     p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
94     if (p == NULL) {
95         return -TARGET_EFAULT;
96     }
97     if (regpairs_aligned(cpu_env) != 0) {
98         arg4 = arg5;
99         arg5 = arg6;
100     }
101     ret = get_errno(safe_pread(arg1, p, arg3, target_arg64(arg4, arg5)));
102     unlock_user(p, arg2, ret);
103 
104     return ret;
105 }
106 
107 /* readv(2) */
do_bsd_readv(abi_long arg1,abi_long arg2,abi_long arg3)108 static abi_long do_bsd_readv(abi_long arg1, abi_long arg2, abi_long arg3)
109 {
110     abi_long ret;
111     struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
112 
113     if (vec != NULL) {
114         ret = get_errno(safe_readv(arg1, vec, arg3));
115         unlock_iovec(vec, arg2, arg3, 1);
116     } else {
117         ret = -host_to_target_errno(errno);
118     }
119 
120     return ret;
121 }
122 
123 /* preadv(2) */
do_bsd_preadv(void * cpu_env,abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4,abi_long arg5,abi_long arg6)124 static abi_long do_bsd_preadv(void *cpu_env, abi_long arg1,
125     abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6)
126 {
127     abi_long ret;
128     struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 1);
129 
130     if (vec != NULL) {
131         if (regpairs_aligned(cpu_env) != 0) {
132             arg4 = arg5;
133             arg5 = arg6;
134         }
135         ret = get_errno(safe_preadv(arg1, vec, arg3, target_arg64(arg4, arg5)));
136         unlock_iovec(vec, arg2, arg3, 0);
137     } else {
138         ret = -host_to_target_errno(errno);
139     }
140 
141     return ret;
142 }
143 
144 /* write(2) */
do_bsd_write(abi_long arg1,abi_long arg2,abi_long arg3)145 static abi_long do_bsd_write(abi_long arg1, abi_long arg2, abi_long arg3)
146 {
147     abi_long nbytes, ret;
148     void *p;
149 
150     /* nbytes < 0 implies that it was larger than SIZE_MAX. */
151     nbytes = arg3;
152     if (nbytes < 0) {
153         return -TARGET_EINVAL;
154     }
155     p = lock_user(VERIFY_READ, arg2, nbytes, 1);
156     if (p == NULL) {
157         return -TARGET_EFAULT;
158     }
159     ret = get_errno(safe_write(arg1, p, arg3));
160     unlock_user(p, arg2, 0);
161 
162     return ret;
163 }
164 
165 /* pwrite(2) */
do_bsd_pwrite(void * cpu_env,abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4,abi_long arg5,abi_long arg6)166 static abi_long do_bsd_pwrite(void *cpu_env, abi_long arg1,
167     abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6)
168 {
169     abi_long ret;
170     void *p;
171 
172     p = lock_user(VERIFY_READ, arg2, arg3, 1);
173     if (p == NULL) {
174         return -TARGET_EFAULT;
175     }
176     if (regpairs_aligned(cpu_env) != 0) {
177         arg4 = arg5;
178         arg5 = arg6;
179     }
180     ret = get_errno(safe_pwrite(arg1, p, arg3, target_arg64(arg4, arg5)));
181     unlock_user(p, arg2, 0);
182 
183     return ret;
184 }
185 
186 /* writev(2) */
do_bsd_writev(abi_long arg1,abi_long arg2,abi_long arg3)187 static abi_long do_bsd_writev(abi_long arg1, abi_long arg2, abi_long arg3)
188 {
189     abi_long ret;
190     struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
191 
192     if (vec != NULL) {
193         ret = get_errno(safe_writev(arg1, vec, arg3));
194         unlock_iovec(vec, arg2, arg3, 0);
195     } else {
196         ret = -host_to_target_errno(errno);
197     }
198 
199     return ret;
200 }
201 
202 /* pwritev(2) */
do_bsd_pwritev(void * cpu_env,abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4,abi_long arg5,abi_long arg6)203 static abi_long do_bsd_pwritev(void *cpu_env, abi_long arg1,
204     abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6)
205 {
206     abi_long ret;
207     struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
208 
209     if (vec != NULL) {
210         if (regpairs_aligned(cpu_env) != 0) {
211             arg4 = arg5;
212             arg5 = arg6;
213         }
214         ret = get_errno(safe_pwritev(arg1, vec, arg3, target_arg64(arg4, arg5)));
215         unlock_iovec(vec, arg2, arg3, 0);
216     } else {
217         ret = -host_to_target_errno(errno);
218     }
219 
220     return ret;
221 }
222 
223 /* open(2) */
do_bsd_open(abi_long arg1,abi_long arg2,abi_long arg3)224 static abi_long do_bsd_open(abi_long arg1, abi_long arg2, abi_long arg3)
225 {
226     abi_long ret;
227     void *p;
228 
229     LOCK_PATH(p, arg1);
230     ret = get_errno(safe_open(path(p), target_to_host_bitmask(arg2,
231                 fcntl_flags_tbl), arg3));
232     UNLOCK_PATH(p, arg1);
233 
234     return ret;
235 }
236 
237 /* openat(2) */
do_bsd_openat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)238 static abi_long do_bsd_openat(abi_long arg1, abi_long arg2,
239         abi_long arg3, abi_long arg4)
240 {
241     abi_long ret;
242     void *p;
243 
244     LOCK_PATH(p, arg2);
245     ret = get_errno(safe_openat(arg1, path(p),
246                 target_to_host_bitmask(arg3, fcntl_flags_tbl), arg4));
247     UNLOCK_PATH(p, arg2);
248 
249     return ret;
250 }
251 
252 /* close(2) */
do_bsd_close(abi_long arg1)253 static abi_long do_bsd_close(abi_long arg1)
254 {
255     return get_errno(close(arg1));
256 }
257 
258 /* fdatasync(2) */
do_bsd_fdatasync(abi_long arg1)259 static abi_long do_bsd_fdatasync(abi_long arg1)
260 {
261     return get_errno(fdatasync(arg1));
262 }
263 
264 /* fsync(2) */
do_bsd_fsync(abi_long arg1)265 static abi_long do_bsd_fsync(abi_long arg1)
266 {
267     return get_errno(fsync(arg1));
268 }
269 
270 /* closefrom(2) */
do_bsd_closefrom(abi_long arg1)271 static abi_long do_bsd_closefrom(abi_long arg1)
272 {
273     closefrom(arg1);  /* returns void */
274     return get_errno(0);
275 }
276 
277 /* revoke(2) */
do_bsd_revoke(abi_long arg1)278 static abi_long do_bsd_revoke(abi_long arg1)
279 {
280     abi_long ret;
281     void *p;
282 
283     LOCK_PATH(p, arg1);
284     ret = get_errno(revoke(p)); /* XXX path(p)? */
285     UNLOCK_PATH(p, arg1);
286 
287     return ret;
288 }
289 
290 /* access(2) */
do_bsd_access(abi_long arg1,abi_long arg2)291 static abi_long do_bsd_access(abi_long arg1, abi_long arg2)
292 {
293     abi_long ret;
294     void *p;
295 
296     LOCK_PATH(p, arg1);
297     ret = get_errno(access(path(p), arg2));
298     UNLOCK_PATH(p, arg1);
299 
300     return ret;
301 }
302 
303 /* eaccess(2) */
do_bsd_eaccess(abi_long arg1,abi_long arg2)304 static abi_long do_bsd_eaccess(abi_long arg1, abi_long arg2)
305 {
306     abi_long ret;
307     void *p;
308 
309     LOCK_PATH(p, arg1);
310     ret = get_errno(eaccess(path(p), arg2));
311     UNLOCK_PATH(p, arg1);
312 
313     return ret;
314 }
315 
316 /* faccessat(2) */
do_bsd_faccessat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)317 static abi_long do_bsd_faccessat(abi_long arg1, abi_long arg2,
318         abi_long arg3, abi_long arg4)
319 {
320     abi_long ret;
321     void *p;
322 
323     LOCK_PATH(p, arg2);
324     ret = get_errno(faccessat(arg1, p, arg3, arg4)); /* XXX path(p)? */
325     UNLOCK_PATH(p, arg2);
326 
327     return ret;
328 }
329 
330 /* chdir(2) */
do_bsd_chdir(abi_long arg1)331 static abi_long do_bsd_chdir(abi_long arg1)
332 {
333     abi_long ret;
334     void *p;
335 
336     LOCK_PATH(p, arg1);
337     ret = get_errno(chdir(p)); /* XXX  path(p)? */
338     UNLOCK_PATH(p, arg1);
339 
340     return ret;
341 }
342 
343 /* fchdir(2) */
do_bsd_fchdir(abi_long arg1)344 static abi_long do_bsd_fchdir(abi_long arg1)
345 {
346     return get_errno(fchdir(arg1));
347 }
348 
349 /* rename(2) */
do_bsd_rename(abi_long arg1,abi_long arg2)350 static abi_long do_bsd_rename(abi_long arg1, abi_long arg2)
351 {
352     abi_long ret;
353     void *p1, *p2;
354 
355     LOCK_PATH2(p1, arg1, p2, arg2);
356     ret = get_errno(rename(p1, p2)); /* XXX path(p1), path(p2) */
357     UNLOCK_PATH2(p1, arg1, p2, arg2);
358 
359     return ret;
360 }
361 
362 /* renameat(2) */
do_bsd_renameat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)363 static abi_long do_bsd_renameat(abi_long arg1, abi_long arg2,
364         abi_long arg3, abi_long arg4)
365 {
366     abi_long ret;
367     void *p1, *p2;
368 
369     LOCK_PATH2(p1, arg2, p2, arg4);
370     ret = get_errno(renameat(arg1, p1, arg3, p2));
371     UNLOCK_PATH2(p1, arg2, p2, arg4);
372 
373     return ret;
374 }
375 
376 /* link(2) */
do_bsd_link(abi_long arg1,abi_long arg2)377 static abi_long do_bsd_link(abi_long arg1, abi_long arg2)
378 {
379     abi_long ret;
380     void *p1, *p2;
381 
382     LOCK_PATH2(p1, arg1, p2, arg2);
383     ret = get_errno(link(p1, p2)); /* XXX path(p1), path(p2) */
384     UNLOCK_PATH2(p1, arg1, p2, arg2);
385 
386     return ret;
387 }
388 
389 /* linkat(2) */
do_bsd_linkat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4,abi_long arg5)390 static abi_long do_bsd_linkat(abi_long arg1, abi_long arg2,
391         abi_long arg3, abi_long arg4, abi_long arg5)
392 {
393     abi_long ret;
394     void *p1, *p2;
395 
396     LOCK_PATH2(p1, arg2, p2, arg4);
397     ret = get_errno(linkat(arg1, p1, arg3, p2, arg5));
398     UNLOCK_PATH2(p1, arg2, p2, arg4);
399 
400     return ret;
401 }
402 
403 /* unlink(2) */
do_bsd_unlink(abi_long arg1)404 static abi_long do_bsd_unlink(abi_long arg1)
405 {
406     abi_long ret;
407     void *p;
408 
409     LOCK_PATH(p, arg1);
410     ret = get_errno(unlink(p)); /* XXX path(p) */
411     UNLOCK_PATH(p, arg1);
412 
413     return ret;
414 }
415 
416 /* unlinkat(2) */
do_bsd_unlinkat(abi_long arg1,abi_long arg2,abi_long arg3)417 static abi_long do_bsd_unlinkat(abi_long arg1, abi_long arg2,
418         abi_long arg3)
419 {
420     abi_long ret;
421     void *p;
422 
423     LOCK_PATH(p, arg2);
424     ret = get_errno(unlinkat(arg1, p, arg3)); /* XXX path(p) */
425     UNLOCK_PATH(p, arg2);
426 
427     return ret;
428 }
429 
430 /* mkdir(2) */
do_bsd_mkdir(abi_long arg1,abi_long arg2)431 static abi_long do_bsd_mkdir(abi_long arg1, abi_long arg2)
432 {
433     abi_long ret;
434     void *p;
435 
436     LOCK_PATH(p, arg1);
437     ret = get_errno(mkdir(p, arg2)); /* XXX path(p) */
438     UNLOCK_PATH(p, arg1);
439 
440     return ret;
441 }
442 
443 /* mkdirat(2) */
do_bsd_mkdirat(abi_long arg1,abi_long arg2,abi_long arg3)444 static abi_long do_bsd_mkdirat(abi_long arg1, abi_long arg2,
445         abi_long arg3)
446 {
447     abi_long ret;
448     void *p;
449 
450     LOCK_PATH(p, arg2);
451     ret = get_errno(mkdirat(arg1, p, arg3));
452     UNLOCK_PATH(p, arg2);
453 
454     return ret;
455 }
456 
457 /* rmdir(2) */
do_bsd_rmdir(abi_long arg1)458 static abi_long do_bsd_rmdir(abi_long arg1)
459 {
460     abi_long ret;
461     void *p;
462 
463     LOCK_PATH(p, arg1);
464     ret = get_errno(rmdir(p)); /* XXX path(p)? */
465     UNLOCK_PATH(p, arg1);
466 
467     return ret;
468 }
469 
470 /* undocumented __getcwd(char *buf, size_t len)  system call */
do_bsd___getcwd(abi_long arg1,abi_long arg2)471 static abi_long do_bsd___getcwd(abi_long arg1, abi_long arg2)
472 {
473     abi_long ret;
474     void *p;
475 
476     p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
477     if (p == NULL) {
478         return -TARGET_EFAULT;
479     }
480     ret = safe_syscall(SYS___getcwd, p, arg2);
481     unlock_user(p, arg1, ret == 0 ? strlen(p) + 1 : 0);
482 
483     return get_errno(ret);
484 }
485 
486 /* dup(2) */
do_bsd_dup(abi_long arg1)487 static abi_long do_bsd_dup(abi_long arg1)
488 {
489     return get_errno(dup(arg1));
490 }
491 
492 /* dup2(2) */
do_bsd_dup2(abi_long arg1,abi_long arg2)493 static abi_long do_bsd_dup2(abi_long arg1, abi_long arg2)
494 {
495     return get_errno(dup2(arg1, arg2));
496 }
497 
498 /* truncate(2) */
do_bsd_truncate(void * cpu_env,abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)499 static abi_long do_bsd_truncate(void *cpu_env, abi_long arg1,
500         abi_long arg2, abi_long arg3, abi_long arg4)
501 {
502     abi_long ret;
503     void *p;
504 
505     LOCK_PATH(p, arg1);
506     if (regpairs_aligned(cpu_env) != 0) {
507         arg2 = arg3;
508         arg3 = arg4;
509     }
510     ret = get_errno(truncate(p, target_arg64(arg2, arg3)));
511     UNLOCK_PATH(p, arg1);
512 
513     return ret;
514 }
515 
516 /* ftruncate(2) */
do_bsd_ftruncate(void * cpu_env,abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)517 static abi_long do_bsd_ftruncate(void *cpu_env, abi_long arg1,
518         abi_long arg2, abi_long arg3, abi_long arg4)
519 {
520     if (regpairs_aligned(cpu_env) != 0) {
521         arg2 = arg3;
522         arg3 = arg4;
523     }
524     return get_errno(ftruncate(arg1, target_arg64(arg2, arg3)));
525 }
526 
527 /* acct(2) */
do_bsd_acct(abi_long arg1)528 static abi_long do_bsd_acct(abi_long arg1)
529 {
530     abi_long ret;
531     void *p;
532 
533     if (arg1 == 0) {
534         ret = get_errno(acct(NULL));
535     } else {
536         LOCK_PATH(p, arg1);
537         ret = get_errno(acct(path(p)));
538         UNLOCK_PATH(p, arg1);
539     }
540     return ret;
541 }
542 
543 /* sync(2) */
do_bsd_sync(void)544 static abi_long do_bsd_sync(void)
545 {
546     sync();
547     return 0;
548 }
549 
550 /* mount(2) */
do_bsd_mount(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)551 static abi_long do_bsd_mount(abi_long arg1, abi_long arg2, abi_long arg3,
552         abi_long arg4)
553 {
554     abi_long ret;
555     void *p1, *p2;
556 
557     LOCK_PATH2(p1, arg1, p2, arg2);
558     /*
559      * XXX arg4 should be locked, but it isn't clear how to do that since it may
560      * be not be a NULL-terminated string.
561      */
562     if (arg4 == 0) {
563         ret = get_errno(mount(p1, p2, arg3, NULL)); /* XXX path(p2)? */
564     } else {
565         ret = get_errno(mount(p1, p2, arg3, g2h_untagged(arg4))); /* XXX path(p2)? */
566     }
567     UNLOCK_PATH2(p1, arg1, p2, arg2);
568 
569     return ret;
570 }
571 
572 /* unmount(2) */
do_bsd_unmount(abi_long arg1,abi_long arg2)573 static abi_long do_bsd_unmount(abi_long arg1, abi_long arg2)
574 {
575     abi_long ret;
576     void *p;
577 
578     LOCK_PATH(p, arg1);
579     ret = get_errno(unmount(p, arg2)); /* XXX path(p)? */
580     UNLOCK_PATH(p, arg1);
581 
582     return ret;
583 }
584 
585 /* nmount(2) */
do_bsd_nmount(abi_long arg1,abi_long count,abi_long flags)586 static abi_long do_bsd_nmount(abi_long arg1, abi_long count,
587         abi_long flags)
588 {
589     abi_long ret;
590     struct iovec *vec = lock_iovec(VERIFY_READ, arg1, count, 1);
591 
592     if (vec != NULL) {
593         ret = get_errno(nmount(vec, count, flags));
594         unlock_iovec(vec, arg1, count, 0);
595     } else {
596         return -TARGET_EFAULT;
597     }
598 
599     return ret;
600 }
601 
602 /* symlink(2) */
do_bsd_symlink(abi_long arg1,abi_long arg2)603 static abi_long do_bsd_symlink(abi_long arg1, abi_long arg2)
604 {
605     abi_long ret;
606     void *p1, *p2;
607 
608     LOCK_PATH2(p1, arg1, p2, arg2);
609     ret = get_errno(symlink(p1, p2)); /* XXX path(p1), path(p2) */
610     UNLOCK_PATH2(p1, arg1, p2, arg2);
611 
612     return ret;
613 }
614 
615 /* symlinkat(2) */
do_bsd_symlinkat(abi_long arg1,abi_long arg2,abi_long arg3)616 static abi_long do_bsd_symlinkat(abi_long arg1, abi_long arg2,
617         abi_long arg3)
618 {
619     abi_long ret;
620     void *p1, *p2;
621 
622     LOCK_PATH2(p1, arg1, p2, arg3);
623     ret = get_errno(symlinkat(p1, arg2, p2)); /* XXX path(p1), path(p2) */
624     UNLOCK_PATH2(p1, arg1, p2, arg3);
625 
626     return ret;
627 }
628 
629 /* readlink(2) */
do_bsd_readlink(CPUArchState * env,abi_long arg1,abi_long arg2,abi_long arg3)630 static abi_long do_bsd_readlink(CPUArchState *env, abi_long arg1,
631         abi_long arg2, abi_long arg3)
632 {
633     abi_long ret;
634     void *p1, *p2;
635 
636     LOCK_PATH(p1, arg1);
637     p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
638     if (p2 == NULL) {
639         UNLOCK_PATH(p1, arg1);
640         return -TARGET_EFAULT;
641     }
642     if (strcmp(p1, "/proc/curproc/file") == 0) {
643         CPUState *cpu = env_cpu(env);
644         TaskState *ts = get_task_state(cpu);
645         strncpy(p2, ts->bprm->fullpath, arg3);
646         ret = MIN((abi_long)strlen(ts->bprm->fullpath), arg3);
647     } else {
648         ret = get_errno(readlink(path(p1), p2, arg3));
649     }
650     unlock_user(p2, arg2, ret);
651     UNLOCK_PATH(p1, arg1);
652 
653     return ret;
654 }
655 
656 /* readlinkat(2) */
do_bsd_readlinkat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)657 static abi_long do_bsd_readlinkat(abi_long arg1, abi_long arg2,
658         abi_long arg3, abi_long arg4)
659 {
660     abi_long ret;
661     void *p1, *p2;
662 
663     LOCK_PATH(p1, arg2);
664     p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
665     if (p2 == NULL) {
666         UNLOCK_PATH(p1, arg2);
667         return -TARGET_EFAULT;
668     }
669     ret = get_errno(readlinkat(arg1, p1, p2, arg4));
670     unlock_user(p2, arg3, ret);
671     UNLOCK_PATH(p1, arg2);
672 
673     return ret;
674 }
675 
676 /* chmod(2) */
do_bsd_chmod(abi_long arg1,abi_long arg2)677 static abi_long do_bsd_chmod(abi_long arg1, abi_long arg2)
678 {
679     abi_long ret;
680     void *p;
681 
682     LOCK_PATH(p, arg1);
683     ret = get_errno(chmod(p, arg2)); /* XXX path(p)? */
684     UNLOCK_PATH(p, arg1);
685 
686     return ret;
687 }
688 
689 /* fchmod(2) */
do_bsd_fchmod(abi_long arg1,abi_long arg2)690 static abi_long do_bsd_fchmod(abi_long arg1, abi_long arg2)
691 {
692     return get_errno(fchmod(arg1, arg2));
693 }
694 
695 /* lchmod(2) */
do_bsd_lchmod(abi_long arg1,abi_long arg2)696 static abi_long do_bsd_lchmod(abi_long arg1, abi_long arg2)
697 {
698     abi_long ret;
699     void *p;
700 
701     LOCK_PATH(p, arg1);
702     ret = get_errno(lchmod(p, arg2)); /* XXX path(p)? */
703     UNLOCK_PATH(p, arg1);
704 
705     return ret;
706 }
707 
708 /* fchmodat(2) */
do_bsd_fchmodat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)709 static abi_long do_bsd_fchmodat(abi_long arg1, abi_long arg2,
710         abi_long arg3, abi_long arg4)
711 {
712     abi_long ret;
713     void *p;
714 
715     LOCK_PATH(p, arg2);
716     ret = get_errno(fchmodat(arg1, p, arg3, arg4));
717     UNLOCK_PATH(p, arg2);
718 
719     return ret;
720 }
721 
722 /* pre-ino64 mknod(2) */
do_bsd_freebsd11_mknod(abi_long arg1,abi_long arg2,abi_long arg3)723 static abi_long do_bsd_freebsd11_mknod(abi_long arg1, abi_long arg2, abi_long arg3)
724 {
725     abi_long ret;
726     void *p;
727 
728     LOCK_PATH(p, arg1);
729     ret = get_errno(syscall(SYS_freebsd11_mknod, p, arg2, arg3));
730     UNLOCK_PATH(p, arg1);
731 
732     return ret;
733 }
734 
735 /* pre-ino64 mknodat(2) */
do_bsd_freebsd11_mknodat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4)736 static abi_long do_bsd_freebsd11_mknodat(abi_long arg1, abi_long arg2,
737         abi_long arg3, abi_long arg4)
738 {
739     abi_long ret;
740     void *p;
741 
742     LOCK_PATH(p, arg2);
743     ret = get_errno(syscall(SYS_freebsd11_mknodat, arg1, p, arg3, arg4));
744     UNLOCK_PATH(p, arg2);
745 
746     return ret;
747 }
748 
749 /* post-ino64 mknodat(2) */
do_bsd_mknodat(void * cpu_env,abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4,abi_long arg5,abi_long arg6)750 static abi_long do_bsd_mknodat(void *cpu_env, abi_long arg1,
751         abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
752         abi_long arg6)
753 {
754     abi_long ret;
755     void *p;
756 
757     LOCK_PATH(p, arg2);
758        /* 32-bit arch's use two 32 registers for 64 bit return value */
759     if (regpairs_aligned(cpu_env) != 0) {
760         ret = get_errno(mknodat(arg1, p, arg3, target_arg64(arg5, arg6)));
761     } else {
762         ret = get_errno(mknodat(arg1, p, arg3, target_arg64(arg4, arg5)));
763     }
764     UNLOCK_PATH(p, arg2);
765 
766     return ret;
767 }
768 
769 /* chown(2) */
do_bsd_chown(abi_long arg1,abi_long arg2,abi_long arg3)770 static abi_long do_bsd_chown(abi_long arg1, abi_long arg2, abi_long arg3)
771 {
772     abi_long ret;
773     void *p;
774 
775     LOCK_PATH(p, arg1);
776     ret = get_errno(chown(p, arg2, arg3)); /* XXX path(p)? */
777     UNLOCK_PATH(p, arg1);
778 
779     return ret;
780 }
781 
782 /* fchown(2) */
do_bsd_fchown(abi_long arg1,abi_long arg2,abi_long arg3)783 static abi_long do_bsd_fchown(abi_long arg1, abi_long arg2,
784         abi_long arg3)
785 {
786     return get_errno(fchown(arg1, arg2, arg3));
787 }
788 
789 /* lchown(2) */
do_bsd_lchown(abi_long arg1,abi_long arg2,abi_long arg3)790 static abi_long do_bsd_lchown(abi_long arg1, abi_long arg2,
791         abi_long arg3)
792 {
793     abi_long ret;
794     void *p;
795 
796     LOCK_PATH(p, arg1);
797     ret = get_errno(lchown(p, arg2, arg3)); /* XXX path(p)? */
798     UNLOCK_PATH(p, arg1);
799 
800     return ret;
801 }
802 
803 /* fchownat(2) */
do_bsd_fchownat(abi_long arg1,abi_long arg2,abi_long arg3,abi_long arg4,abi_long arg5)804 static abi_long do_bsd_fchownat(abi_long arg1, abi_long arg2,
805         abi_long arg3, abi_long arg4, abi_long arg5)
806 {
807     abi_long ret;
808     void *p;
809 
810     LOCK_PATH(p, arg2);
811     ret = get_errno(fchownat(arg1, p, arg3, arg4, arg5)); /* XXX path(p)? */
812     UNLOCK_PATH(p, arg2);
813 
814     return ret;
815 }
816 
817 /* chflags(2) */
do_bsd_chflags(abi_long arg1,abi_long arg2)818 static abi_long do_bsd_chflags(abi_long arg1, abi_long arg2)
819 {
820     abi_long ret;
821     void *p;
822 
823     LOCK_PATH(p, arg1);
824     ret = get_errno(chflags(p, arg2)); /* XXX path(p)? */
825     UNLOCK_PATH(p, arg1);
826 
827     return ret;
828 }
829 
830 /* lchflags(2) */
do_bsd_lchflags(abi_long arg1,abi_long arg2)831 static abi_long do_bsd_lchflags(abi_long arg1, abi_long arg2)
832 {
833     abi_long ret;
834     void *p;
835 
836     LOCK_PATH(p, arg1);
837     ret = get_errno(lchflags(p, arg2)); /* XXX path(p)? */
838     UNLOCK_PATH(p, arg1);
839 
840     return ret;
841 }
842 
843 /* fchflags(2) */
do_bsd_fchflags(abi_long arg1,abi_long arg2)844 static abi_long do_bsd_fchflags(abi_long arg1, abi_long arg2)
845 {
846     return get_errno(fchflags(arg1, arg2));
847 }
848 
849 /* chroot(2) */
do_bsd_chroot(abi_long arg1)850 static abi_long do_bsd_chroot(abi_long arg1)
851 {
852     abi_long ret;
853     void *p;
854 
855     LOCK_PATH(p, arg1);
856     ret = get_errno(chroot(p)); /* XXX path(p)? */
857     UNLOCK_PATH(p, arg1);
858 
859     return ret;
860 }
861 
862 /* flock(2) */
do_bsd_flock(abi_long arg1,abi_long arg2)863 static abi_long do_bsd_flock(abi_long arg1, abi_long arg2)
864 {
865     return get_errno(flock(arg1, arg2));
866 }
867 
868 /* mkfifo(2) */
do_bsd_mkfifo(abi_long arg1,abi_long arg2)869 static abi_long do_bsd_mkfifo(abi_long arg1, abi_long arg2)
870 {
871     abi_long ret;
872     void *p;
873 
874     LOCK_PATH(p, arg1);
875     ret = get_errno(mkfifo(p, arg2)); /* XXX path(p)? */
876     UNLOCK_PATH(p, arg1);
877 
878     return ret;
879 }
880 
881 /* mkfifoat(2) */
do_bsd_mkfifoat(abi_long arg1,abi_long arg2,abi_long arg3)882 static abi_long do_bsd_mkfifoat(abi_long arg1, abi_long arg2,
883         abi_long arg3)
884 {
885     abi_long ret;
886     void *p;
887 
888     LOCK_PATH(p, arg2);
889     ret = get_errno(mkfifoat(arg1, p, arg3));
890     UNLOCK_PATH(p, arg2);
891 
892     return ret;
893 }
894 
895 /* pathconf(2) */
do_bsd_pathconf(abi_long arg1,abi_long arg2)896 static abi_long do_bsd_pathconf(abi_long arg1, abi_long arg2)
897 {
898     abi_long ret;
899     void *p;
900 
901     LOCK_PATH(p, arg1);
902     ret = get_errno(pathconf(p, arg2)); /* XXX path(p)? */
903     UNLOCK_PATH(p, arg1);
904 
905     return ret;
906 }
907 
908 /* lpathconf(2) */
do_bsd_lpathconf(abi_long arg1,abi_long arg2)909 static abi_long do_bsd_lpathconf(abi_long arg1, abi_long arg2)
910 {
911     abi_long ret;
912     void *p;
913 
914     LOCK_PATH(p, arg1);
915     ret = get_errno(lpathconf(p, arg2)); /* XXX path(p)? */
916     UNLOCK_PATH(p, arg1);
917 
918     return ret;
919 }
920 
921 /* fpathconf(2) */
do_bsd_fpathconf(abi_long arg1,abi_long arg2)922 static abi_long do_bsd_fpathconf(abi_long arg1, abi_long arg2)
923 {
924     return get_errno(fpathconf(arg1, arg2));
925 }
926 
927 /* undelete(2) */
do_bsd_undelete(abi_long arg1)928 static abi_long do_bsd_undelete(abi_long arg1)
929 {
930     abi_long ret;
931     void *p;
932 
933     LOCK_PATH(p, arg1);
934     ret = get_errno(undelete(p)); /* XXX path(p)? */
935     UNLOCK_PATH(p, arg1);
936 
937     return ret;
938 }
939 
940 #endif /* BSD_FILE_H */
941