xref: /freebsd/lib/libthr/thread/thr_syscalls.c (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
1 /*
2  * Copyright (C) 2005 David Xu <davidxu@freebsd.org>.
3  * Copyright (c) 2003 Daniel Eischen <deischen@freebsd.org>.
4  * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice(s), this list of conditions and the following disclaimer as
12  *    the first lines of this file unmodified other than the possible
13  *    addition of one or more copyright notices.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice(s), this list of conditions and the following disclaimer in
16  *    the documentation and/or other materials provided with the
17  *    distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
26  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
28  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  *
31  * $FreeBSD$
32  */
33 
34 /*
35  * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
36  * All rights reserved.
37  *
38  * Redistribution and use in source and binary forms, with or without
39  * modification, are permitted provided that the following conditions
40  * are met:
41  * 1. Redistributions of source code must retain the above copyright
42  *    notice, this list of conditions and the following disclaimer.
43  * 2. Redistributions in binary form must reproduce the above copyright
44  *    notice, this list of conditions and the following disclaimer in the
45  *    documentation and/or other materials provided with the distribution.
46  * 3. Neither the name of the author nor the names of any co-contributors
47  *    may be used to endorse or promote products derived from this software
48  *    without specific prior written permission.
49  *
50  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60  * SUCH DAMAGE.
61  *
62  */
63 
64 #include "namespace.h"
65 #include <sys/types.h>
66 #include <sys/mman.h>
67 #include <sys/param.h>
68 #include <sys/select.h>
69 #include <sys/signalvar.h>
70 #include <sys/socket.h>
71 #include <sys/stat.h>
72 #include <sys/time.h>
73 #include <sys/uio.h>
74 #include <sys/wait.h>
75 #include <aio.h>
76 #include <dirent.h>
77 #include <errno.h>
78 #include <fcntl.h>
79 #include <poll.h>
80 #include <signal.h>
81 #include <stdarg.h>
82 #include <stdio.h>
83 #include <stdlib.h>
84 #include <string.h>
85 #include <termios.h>
86 #include <unistd.h>
87 #include <pthread.h>
88 #include "un-namespace.h"
89 
90 #include "thr_private.h"
91 
92 extern int	__creat(const char *, mode_t);
93 extern int	__pselect(int, fd_set *, fd_set *, fd_set *,
94 			const struct timespec *, const sigset_t *);
95 extern unsigned	__sleep(unsigned int);
96 extern int	__system(const char *);
97 extern int	__tcdrain(int);
98 extern int	__usleep(useconds_t);
99 extern pid_t	__wait(int *);
100 extern pid_t	__waitpid(pid_t, int *, int);
101 extern int	__sys_aio_suspend(const struct aiocb * const[], int,
102 			const struct timespec *);
103 extern int	__sys_accept(int, struct sockaddr *, socklen_t *);
104 extern int	__sys_connect(int, const struct sockaddr *, socklen_t);
105 extern int	__sys_fsync(int);
106 extern int	__sys_msync(void *, size_t, int);
107 extern int	__sys_poll(struct pollfd *, unsigned, int);
108 extern ssize_t	__sys_recv(int, void *, size_t, int);
109 extern ssize_t	__sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *);
110 extern ssize_t	__sys_recvmsg(int, struct msghdr *, int);
111 extern int	__sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
112 extern int	__sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *,
113 			off_t *, int);
114 extern ssize_t	__sys_sendmsg(int, const struct msghdr *, int);
115 extern ssize_t	__sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t);
116 extern ssize_t	__sys_readv(int, const struct iovec *, int);
117 extern pid_t	__sys_wait4(pid_t, int *, int, struct rusage *);
118 extern ssize_t	__sys_writev(int, const struct iovec *, int);
119 
120 int	___creat(const char *, mode_t);
121 int	___pselect(int, fd_set *, fd_set *, fd_set *,
122 		const struct timespec *, const sigset_t *);
123 unsigned	___sleep(unsigned);
124 int	___system(const char *);
125 int	___tcdrain(int);
126 int	___usleep(useconds_t useconds);
127 pid_t	___wait(int *);
128 pid_t	___waitpid(pid_t, int *, int);
129 int	__accept(int, struct sockaddr *, socklen_t *);
130 int	__aio_suspend(const struct aiocb * const iocbs[], int,
131 		const struct timespec *);
132 int	__close(int);
133 int	__connect(int, const struct sockaddr *, socklen_t);
134 int	__fcntl(int, int,...);
135 extern int __fcntl_compat(int, int,...);
136 int	__fsync(int);
137 int	__msync(void *, size_t, int);
138 int	__nanosleep(const struct timespec *, struct timespec *);
139 int	__open(const char *, int,...);
140 int	__poll(struct pollfd *, unsigned int, int);
141 ssize_t	__read(int, void *buf, size_t);
142 ssize_t	__readv(int, const struct iovec *, int);
143 ssize_t	__recvfrom(int, void *, size_t, int f, struct sockaddr *, socklen_t *);
144 ssize_t	__recvmsg(int, struct msghdr *, int);
145 int	__select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
146 ssize_t	__sendmsg(int, const struct msghdr *, int);
147 ssize_t	__sendto(int, const void *, size_t, int,
148 		const struct sockaddr *, socklen_t);
149 pid_t	__wait3(int *, int, struct rusage *);
150 pid_t	__wait4(pid_t, int *, int, struct rusage *);
151 ssize_t	__write(int, const void *, size_t);
152 ssize_t	__writev(int, const struct iovec *, int);
153 
154 __weak_reference(__accept, accept);
155 
156 int
157 __accept(int s, struct sockaddr *addr, socklen_t *addrlen)
158 {
159 	struct pthread *curthread;
160 	int ret;
161 
162 	curthread = _get_curthread();
163 	_thr_cancel_enter(curthread);
164 	ret = __sys_accept(s, addr, addrlen);
165 	_thr_cancel_leave(curthread);
166 
167  	return (ret);
168 }
169 
170 __weak_reference(__aio_suspend, aio_suspend);
171 
172 int
173 __aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct
174     timespec *timeout)
175 {
176 	struct pthread *curthread = _get_curthread();
177 	int ret;
178 
179 	_thr_cancel_enter(curthread);
180 	ret = __sys_aio_suspend(iocbs, niocb, timeout);
181 	_thr_cancel_leave(curthread);
182 
183 	return (ret);
184 }
185 
186 __weak_reference(__close, close);
187 
188 int
189 __close(int fd)
190 {
191 	struct pthread	*curthread = _get_curthread();
192 	int	ret;
193 
194 	_thr_cancel_enter(curthread);
195 	ret = __sys_close(fd);
196 	_thr_cancel_leave(curthread);
197 
198 	return (ret);
199 }
200 
201 __weak_reference(__connect, connect);
202 
203 int
204 __connect(int fd, const struct sockaddr *name, socklen_t namelen)
205 {
206 	struct pthread *curthread = _get_curthread();
207 	int ret;
208 
209 	_thr_cancel_enter(curthread);
210 	ret = __sys_connect(fd, name, namelen);
211 	_thr_cancel_leave(curthread);
212 
213  	return (ret);
214 }
215 
216 __weak_reference(___creat, creat);
217 
218 int
219 ___creat(const char *path, mode_t mode)
220 {
221 	struct pthread *curthread = _get_curthread();
222 	int ret;
223 
224 	_thr_cancel_enter(curthread);
225 	ret = __creat(path, mode);
226 	_thr_cancel_leave(curthread);
227 
228 	return ret;
229 }
230 
231 __weak_reference(__fcntl, fcntl);
232 
233 int
234 __fcntl(int fd, int cmd,...)
235 {
236 	struct pthread *curthread = _get_curthread();
237 	int	ret;
238 	va_list	ap;
239 
240 	_thr_cancel_enter(curthread);
241 
242 	va_start(ap, cmd);
243 	switch (cmd) {
244 	case F_DUPFD:
245 		ret = __sys_fcntl(fd, cmd, va_arg(ap, int));
246 		break;
247 	case F_SETFD:
248 	case F_SETFL:
249 		ret = __sys_fcntl(fd, cmd, va_arg(ap, int));
250 		break;
251 	case F_GETFD:
252 	case F_GETFL:
253 		ret = __sys_fcntl(fd, cmd);
254 		break;
255 	default:
256 		ret = __fcntl_compat(fd, cmd, va_arg(ap, void *));
257 	}
258 	va_end(ap);
259 
260 	_thr_cancel_leave(curthread);
261 
262 	return (ret);
263 }
264 
265 __weak_reference(__fsync, fsync);
266 
267 int
268 __fsync(int fd)
269 {
270 	struct pthread *curthread = _get_curthread();
271 	int	ret;
272 
273 	_thr_cancel_enter(curthread);
274 	ret = __sys_fsync(fd);
275 	_thr_cancel_leave(curthread);
276 
277 	return (ret);
278 }
279 
280 __weak_reference(__msync, msync);
281 
282 int
283 __msync(void *addr, size_t len, int flags)
284 {
285 	struct pthread *curthread = _get_curthread();
286 	int	ret;
287 
288 	_thr_cancel_enter(curthread);
289 	ret = __sys_msync(addr, len, flags);
290 	_thr_cancel_leave(curthread);
291 
292 	return ret;
293 }
294 
295 __weak_reference(__nanosleep, nanosleep);
296 
297 int
298 __nanosleep(const struct timespec *time_to_sleep,
299     struct timespec *time_remaining)
300 {
301 	struct pthread *curthread = _get_curthread();
302 	int		ret;
303 
304 	_thr_cancel_enter(curthread);
305 	ret = __sys_nanosleep(time_to_sleep, time_remaining);
306 	_thr_cancel_leave(curthread);
307 
308 	return (ret);
309 }
310 
311 __weak_reference(__open, open);
312 
313 int
314 __open(const char *path, int flags,...)
315 {
316 	struct pthread *curthread = _get_curthread();
317 	int	ret;
318 	int	mode = 0;
319 	va_list	ap;
320 
321 	_thr_cancel_enter(curthread);
322 
323 	/* Check if the file is being created: */
324 	if (flags & O_CREAT) {
325 		/* Get the creation mode: */
326 		va_start(ap, flags);
327 		mode = va_arg(ap, int);
328 		va_end(ap);
329 	}
330 
331 	ret = __sys_open(path, flags, mode);
332 
333 	_thr_cancel_leave(curthread);
334 
335 	return ret;
336 }
337 
338 __weak_reference(__poll, poll);
339 
340 int
341 __poll(struct pollfd *fds, unsigned int nfds, int timeout)
342 {
343 	struct pthread *curthread = _get_curthread();
344 	int ret;
345 
346 	_thr_cancel_enter(curthread);
347 	ret = __sys_poll(fds, nfds, timeout);
348 	_thr_cancel_leave(curthread);
349 
350 	return ret;
351 }
352 
353 __weak_reference(___pselect, pselect);
354 
355 int
356 ___pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds,
357 	const struct timespec *timo, const sigset_t *mask)
358 {
359 	struct pthread *curthread = _get_curthread();
360 	int ret;
361 
362 	_thr_cancel_enter(curthread);
363 	ret = __pselect(count, rfds, wfds, efds, timo, mask);
364 	_thr_cancel_leave(curthread);
365 
366 	return (ret);
367 }
368 
369 __weak_reference(__read, read);
370 
371 ssize_t
372 __read(int fd, void *buf, size_t nbytes)
373 {
374 	struct pthread *curthread = _get_curthread();
375 	ssize_t	ret;
376 
377 	_thr_cancel_enter(curthread);
378 	ret = __sys_read(fd, buf, nbytes);
379 	_thr_cancel_leave(curthread);
380 
381 	return ret;
382 }
383 
384 __weak_reference(__readv, readv);
385 
386 ssize_t
387 __readv(int fd, const struct iovec *iov, int iovcnt)
388 {
389 	struct pthread *curthread = _get_curthread();
390 	ssize_t ret;
391 
392 	_thr_cancel_enter(curthread);
393 	ret = __sys_readv(fd, iov, iovcnt);
394 	_thr_cancel_leave(curthread);
395 
396 	return ret;
397 }
398 
399 __weak_reference(__recvfrom, recvfrom);
400 
401 ssize_t
402 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from,
403     socklen_t *fl)
404 {
405 	struct pthread *curthread = _get_curthread();
406 	ssize_t ret;
407 
408 	_thr_cancel_enter(curthread);
409 	ret = __sys_recvfrom(s, b, l, f, from, fl);
410 	_thr_cancel_leave(curthread);
411 	return (ret);
412 }
413 
414 __weak_reference(__recvmsg, recvmsg);
415 
416 ssize_t
417 __recvmsg(int s, struct msghdr *m, int f)
418 {
419 	struct pthread *curthread = _get_curthread();
420 	ssize_t ret;
421 
422 	_thr_cancel_enter(curthread);
423 	ret = __sys_recvmsg(s, m, f);
424 	_thr_cancel_leave(curthread);
425 	return (ret);
426 }
427 
428 __weak_reference(__select, select);
429 
430 int
431 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
432 	struct timeval *timeout)
433 {
434 	struct pthread *curthread = _get_curthread();
435 	int ret;
436 
437 	_thr_cancel_enter(curthread);
438 	ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout);
439 	_thr_cancel_leave(curthread);
440 	return ret;
441 }
442 
443 __weak_reference(__sendmsg, sendmsg);
444 
445 ssize_t
446 __sendmsg(int s, const struct msghdr *m, int f)
447 {
448 	struct pthread *curthread = _get_curthread();
449 	ssize_t ret;
450 
451 	_thr_cancel_enter(curthread);
452 	ret = __sys_sendmsg(s, m, f);
453 	_thr_cancel_leave(curthread);
454 	return (ret);
455 }
456 
457 __weak_reference(__sendto, sendto);
458 
459 ssize_t
460 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t,
461     socklen_t tl)
462 {
463 	struct pthread *curthread = _get_curthread();
464 	ssize_t ret;
465 
466 	_thr_cancel_enter(curthread);
467 	ret = __sys_sendto(s, m, l, f, t, tl);
468 	_thr_cancel_leave(curthread);
469 	return (ret);
470 }
471 
472 __weak_reference(___sleep, sleep);
473 
474 unsigned int
475 ___sleep(unsigned int seconds)
476 {
477 	struct pthread *curthread = _get_curthread();
478 	unsigned int	ret;
479 
480 	_thr_cancel_enter(curthread);
481 	ret = __sleep(seconds);
482 	_thr_cancel_leave(curthread);
483 
484 	return (ret);
485 }
486 
487 __weak_reference(___system, system);
488 
489 int
490 ___system(const char *string)
491 {
492 	struct pthread *curthread = _get_curthread();
493 	int	ret;
494 
495 	_thr_cancel_enter(curthread);
496 	ret = __system(string);
497 	_thr_cancel_leave(curthread);
498 
499 	return ret;
500 }
501 
502 __weak_reference(___tcdrain, tcdrain);
503 
504 int
505 ___tcdrain(int fd)
506 {
507 	struct pthread *curthread = _get_curthread();
508 	int	ret;
509 
510 	_thr_cancel_enter(curthread);
511 	ret = __tcdrain(fd);
512 	_thr_cancel_leave(curthread);
513 
514 	return (ret);
515 }
516 
517 __weak_reference(___usleep, usleep);
518 
519 int
520 ___usleep(useconds_t useconds)
521 {
522 	struct pthread *curthread = _get_curthread();
523 	int		ret;
524 
525 	_thr_cancel_enter(curthread);
526 	ret = __usleep(useconds);
527 	_thr_cancel_leave(curthread);
528 
529 	return (ret);
530 }
531 
532 __weak_reference(___wait, wait);
533 
534 pid_t
535 ___wait(int *istat)
536 {
537 	struct pthread *curthread = _get_curthread();
538 	pid_t	ret;
539 
540 	_thr_cancel_enter(curthread);
541 	ret = __wait(istat);
542 	_thr_cancel_leave(curthread);
543 
544 	return ret;
545 }
546 
547 __weak_reference(__wait3, wait3);
548 
549 pid_t
550 __wait3(int *status, int options, struct rusage *rusage)
551 {
552 	struct pthread *curthread = _get_curthread();
553 	pid_t ret;
554 
555 	_thr_cancel_enter(curthread);
556 	ret = _wait4(WAIT_ANY, status, options, rusage);
557 	_thr_cancel_leave(curthread);
558 
559 	return (ret);
560 }
561 
562 __weak_reference(__wait4, wait4);
563 
564 pid_t
565 __wait4(pid_t pid, int *status, int options, struct rusage *rusage)
566 {
567 	struct pthread *curthread = _get_curthread();
568 	pid_t ret;
569 
570 	_thr_cancel_enter(curthread);
571 	ret = __sys_wait4(pid, status, options, rusage);
572 	_thr_cancel_leave(curthread);
573 
574 	return ret;
575 }
576 
577 __weak_reference(___waitpid, waitpid);
578 
579 pid_t
580 ___waitpid(pid_t wpid, int *status, int options)
581 {
582 	struct pthread *curthread = _get_curthread();
583 	pid_t	ret;
584 
585 	_thr_cancel_enter(curthread);
586 	ret = __waitpid(wpid, status, options);
587 	_thr_cancel_leave(curthread);
588 
589 	return ret;
590 }
591 
592 __weak_reference(__write, write);
593 
594 ssize_t
595 __write(int fd, const void *buf, size_t nbytes)
596 {
597 	struct pthread *curthread = _get_curthread();
598 	ssize_t	ret;
599 
600 	_thr_cancel_enter(curthread);
601 	ret = __sys_write(fd, buf, nbytes);
602 	_thr_cancel_leave(curthread);
603 
604 	return ret;
605 }
606 
607 __weak_reference(__writev, writev);
608 
609 ssize_t
610 __writev(int fd, const struct iovec *iov, int iovcnt)
611 {
612 	struct pthread *curthread = _get_curthread();
613 	ssize_t ret;
614 
615 	_thr_cancel_enter(curthread);
616 	ret = __sys_writev(fd, iov, iovcnt);
617 	_thr_cancel_leave(curthread);
618 
619 	return ret;
620 }
621