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