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 int __usleep(useconds_t); 101 extern pid_t __wait(int *); 102 extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 103 extern pid_t __waitpid(pid_t, int *, int); 104 105 __weak_reference(__accept, accept); 106 int 107 __accept(int s, struct sockaddr *addr, socklen_t *addrlen) 108 { 109 struct pthread *curthread; 110 int oldcancel; 111 int ret; 112 113 curthread = _get_curthread(); 114 oldcancel = _thr_cancel_enter(curthread); 115 ret = __sys_accept(s, addr, addrlen); 116 _thr_cancel_leave(curthread, oldcancel); 117 118 return (ret); 119 } 120 121 __weak_reference(_aio_suspend, aio_suspend); 122 123 int 124 _aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 125 timespec *timeout) 126 { 127 struct pthread *curthread = _get_curthread(); 128 int oldcancel; 129 int ret; 130 131 oldcancel = _thr_cancel_enter(curthread); 132 ret = __sys_aio_suspend(iocbs, niocb, timeout); 133 _thr_cancel_leave(curthread, oldcancel); 134 135 return (ret); 136 } 137 138 __weak_reference(__close, close); 139 140 int 141 __close(int fd) 142 { 143 struct pthread *curthread = _get_curthread(); 144 int oldcancel; 145 int ret; 146 147 oldcancel = _thr_cancel_enter(curthread); 148 ret = __sys_close(fd); 149 _thr_cancel_leave(curthread, oldcancel); 150 151 return (ret); 152 } 153 154 __weak_reference(__connect, connect); 155 156 int 157 __connect(int fd, const struct sockaddr *name, socklen_t namelen) 158 { 159 struct pthread *curthread = _get_curthread(); 160 int oldcancel; 161 int ret; 162 163 curthread = _get_curthread(); 164 oldcancel = _thr_cancel_enter(curthread); 165 ret = __sys_connect(fd, name, namelen); 166 _thr_cancel_leave(curthread, oldcancel); 167 168 return (ret); 169 } 170 171 __weak_reference(___creat, creat); 172 173 int 174 ___creat(const char *path, mode_t mode) 175 { 176 struct pthread *curthread = _get_curthread(); 177 int oldcancel; 178 int ret; 179 180 oldcancel = _thr_cancel_enter(curthread); 181 ret = __creat(path, mode); 182 _thr_cancel_leave(curthread, oldcancel); 183 184 return ret; 185 } 186 187 __weak_reference(__fcntl, fcntl); 188 189 int 190 __fcntl(int fd, int cmd,...) 191 { 192 struct pthread *curthread = _get_curthread(); 193 int oldcancel; 194 int ret; 195 va_list ap; 196 197 oldcancel = _thr_cancel_enter(curthread); 198 199 va_start(ap, cmd); 200 switch (cmd) { 201 case F_DUPFD: 202 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 203 break; 204 case F_SETFD: 205 case F_SETFL: 206 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 207 break; 208 case F_GETFD: 209 case F_GETFL: 210 ret = __sys_fcntl(fd, cmd); 211 break; 212 default: 213 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 214 } 215 va_end(ap); 216 217 _thr_cancel_leave(curthread, oldcancel); 218 219 return (ret); 220 } 221 222 __weak_reference(__fsync, fsync); 223 224 int 225 __fsync(int fd) 226 { 227 struct pthread *curthread = _get_curthread(); 228 int oldcancel; 229 int ret; 230 231 oldcancel = _thr_cancel_enter(curthread); 232 ret = __sys_fsync(fd); 233 _thr_cancel_leave(curthread, oldcancel); 234 235 return (ret); 236 } 237 238 __weak_reference(__msync, msync); 239 240 int 241 __msync(void *addr, size_t len, int flags) 242 { 243 struct pthread *curthread = _get_curthread(); 244 int oldcancel; 245 int ret; 246 247 oldcancel = _thr_cancel_enter(curthread); 248 ret = __sys_msync(addr, len, flags); 249 _thr_cancel_leave(curthread, oldcancel); 250 251 return ret; 252 } 253 254 __weak_reference(__nanosleep, nanosleep); 255 256 int 257 __nanosleep(const struct timespec *time_to_sleep, 258 struct timespec *time_remaining) 259 { 260 struct pthread *curthread = _get_curthread(); 261 int oldcancel; 262 int ret; 263 264 oldcancel = _thr_cancel_enter(curthread); 265 ret = __sys_nanosleep(time_to_sleep, time_remaining); 266 _thr_cancel_leave(curthread, oldcancel); 267 268 return (ret); 269 } 270 271 __weak_reference(__open, open); 272 273 int 274 __open(const char *path, int flags,...) 275 { 276 struct pthread *curthread = _get_curthread(); 277 int oldcancel; 278 int ret; 279 int mode = 0; 280 va_list ap; 281 282 oldcancel = _thr_cancel_enter(curthread); 283 284 /* Check if the file is being created: */ 285 if (flags & O_CREAT) { 286 /* Get the creation mode: */ 287 va_start(ap, flags); 288 mode = va_arg(ap, int); 289 va_end(ap); 290 } 291 292 ret = __sys_open(path, flags, mode); 293 294 _thr_cancel_leave(curthread, oldcancel); 295 296 return ret; 297 } 298 299 __weak_reference(_pause, pause); 300 301 int 302 _pause(void) 303 { 304 struct pthread *curthread = _get_curthread(); 305 int oldcancel; 306 int ret; 307 308 oldcancel = _thr_cancel_enter(curthread); 309 ret = __pause(); 310 _thr_cancel_leave(curthread, oldcancel); 311 312 return ret; 313 } 314 315 __weak_reference(__poll, poll); 316 317 int 318 __poll(struct pollfd *fds, unsigned int nfds, int timeout) 319 { 320 struct pthread *curthread = _get_curthread(); 321 int oldcancel; 322 int ret; 323 324 oldcancel = _thr_cancel_enter(curthread); 325 ret = __sys_poll(fds, nfds, timeout); 326 _thr_cancel_leave(curthread, oldcancel); 327 328 return ret; 329 } 330 331 __weak_reference(_pselect, pselect); 332 333 int 334 _pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 335 const struct timespec *timo, const sigset_t *mask) 336 { 337 struct pthread *curthread = _get_curthread(); 338 int oldcancel; 339 int ret; 340 341 oldcancel = _thr_cancel_enter(curthread); 342 ret = __pselect(count, rfds, wfds, efds, timo, mask); 343 _thr_cancel_leave(curthread, oldcancel); 344 345 return (ret); 346 } 347 348 __weak_reference(_raise, raise); 349 350 int 351 _raise(int sig) 352 { 353 int ret; 354 355 if (!_thr_isthreaded()) 356 ret = kill(getpid(), sig); 357 else 358 ret = _thr_send_sig(_get_curthread(), sig); 359 return (ret); 360 } 361 362 __weak_reference(__read, read); 363 364 ssize_t 365 __read(int fd, void *buf, size_t nbytes) 366 { 367 struct pthread *curthread = _get_curthread(); 368 int oldcancel; 369 ssize_t ret; 370 371 oldcancel = _thr_cancel_enter(curthread); 372 ret = __sys_read(fd, buf, nbytes); 373 _thr_cancel_leave(curthread, oldcancel); 374 375 return ret; 376 } 377 378 __weak_reference(__readv, readv); 379 380 ssize_t 381 __readv(int fd, const struct iovec *iov, int iovcnt) 382 { 383 struct pthread *curthread = _get_curthread(); 384 int oldcancel; 385 ssize_t ret; 386 387 oldcancel = _thr_cancel_enter(curthread); 388 ret = __sys_readv(fd, iov, iovcnt); 389 _thr_cancel_leave(curthread, oldcancel); 390 391 return ret; 392 } 393 394 __weak_reference(__recvfrom, recvfrom); 395 396 ssize_t 397 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 398 socklen_t *fl) 399 { 400 struct pthread *curthread = _get_curthread(); 401 int oldcancel; 402 ssize_t ret; 403 404 oldcancel = _thr_cancel_enter(curthread); 405 ret = __sys_recvfrom(s, b, l, f, from, fl); 406 _thr_cancel_leave(curthread, oldcancel); 407 return (ret); 408 } 409 410 __weak_reference(__recvmsg, recvmsg); 411 412 ssize_t 413 __recvmsg(int s, struct msghdr *m, int f) 414 { 415 struct pthread *curthread = _get_curthread(); 416 ssize_t ret; 417 int oldcancel; 418 419 oldcancel = _thr_cancel_enter(curthread); 420 ret = __sys_recvmsg(s, m, f); 421 _thr_cancel_leave(curthread, oldcancel); 422 return (ret); 423 } 424 425 __weak_reference(__select, select); 426 427 int 428 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 429 struct timeval *timeout) 430 { 431 struct pthread *curthread = _get_curthread(); 432 int oldcancel; 433 int ret; 434 435 oldcancel = _thr_cancel_enter(curthread); 436 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 437 _thr_cancel_leave(curthread, oldcancel); 438 return ret; 439 } 440 441 __weak_reference(__sendmsg, sendmsg); 442 443 ssize_t 444 __sendmsg(int s, const struct msghdr *m, int f) 445 { 446 struct pthread *curthread = _get_curthread(); 447 ssize_t ret; 448 int oldcancel; 449 450 oldcancel = _thr_cancel_enter(curthread); 451 ret = __sys_sendmsg(s, m, f); 452 _thr_cancel_leave(curthread, oldcancel); 453 return (ret); 454 } 455 456 __weak_reference(__sendto, sendto); 457 458 ssize_t 459 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 460 socklen_t tl) 461 { 462 struct pthread *curthread = _get_curthread(); 463 ssize_t ret; 464 int oldcancel; 465 466 oldcancel = _thr_cancel_enter(curthread); 467 ret = __sys_sendto(s, m, l, f, t, tl); 468 _thr_cancel_leave(curthread, oldcancel); 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 int oldcancel; 479 unsigned int ret; 480 481 oldcancel = _thr_cancel_enter(curthread); 482 ret = __sleep(seconds); 483 _thr_cancel_leave(curthread, oldcancel); 484 485 return (ret); 486 } 487 488 __weak_reference(_system, system); 489 490 int 491 _system(const char *string) 492 { 493 struct pthread *curthread = _get_curthread(); 494 int oldcancel; 495 int ret; 496 497 oldcancel = _thr_cancel_enter(curthread); 498 ret = __system(string); 499 _thr_cancel_leave(curthread, oldcancel); 500 501 return ret; 502 } 503 504 __weak_reference(_tcdrain, tcdrain); 505 506 int 507 _tcdrain(int fd) 508 { 509 struct pthread *curthread = _get_curthread(); 510 int oldcancel; 511 int ret; 512 513 oldcancel = _thr_cancel_enter(curthread); 514 ret = __tcdrain(fd); 515 _thr_cancel_leave(curthread, oldcancel); 516 517 return (ret); 518 } 519 520 __weak_reference(_usleep, usleep); 521 522 int 523 _usleep(useconds_t useconds) 524 { 525 struct pthread *curthread = _get_curthread(); 526 int oldcancel; 527 int ret; 528 529 oldcancel = _thr_cancel_enter(curthread); 530 ret = __usleep(useconds); 531 _thr_cancel_leave(curthread, oldcancel); 532 533 return (ret); 534 } 535 536 __weak_reference(_vfork, vfork); 537 538 int 539 _vfork(void) 540 { 541 return (fork()); 542 } 543 544 __weak_reference(_wait, wait); 545 546 pid_t 547 _wait(int *istat) 548 { 549 struct pthread *curthread = _get_curthread(); 550 int oldcancel; 551 pid_t ret; 552 553 oldcancel = _thr_cancel_enter(curthread); 554 ret = __wait(istat); 555 _thr_cancel_leave(curthread, oldcancel); 556 557 return ret; 558 } 559 560 __weak_reference(__wait4, wait4); 561 562 pid_t 563 __wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 564 { 565 struct pthread *curthread = _get_curthread(); 566 int oldcancel; 567 pid_t ret; 568 569 oldcancel = _thr_cancel_enter(curthread); 570 ret = __sys_wait4(pid, istat, options, rusage); 571 _thr_cancel_leave(curthread, oldcancel); 572 573 return ret; 574 } 575 576 __weak_reference(_waitpid, waitpid); 577 578 pid_t 579 _waitpid(pid_t wpid, int *status, int options) 580 { 581 struct pthread *curthread = _get_curthread(); 582 int oldcancel; 583 pid_t ret; 584 585 oldcancel = _thr_cancel_enter(curthread); 586 ret = __waitpid(wpid, status, options); 587 _thr_cancel_leave(curthread, oldcancel); 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 int oldcancel; 599 ssize_t ret; 600 601 oldcancel = _thr_cancel_enter(curthread); 602 ret = __sys_write(fd, buf, nbytes); 603 _thr_cancel_leave(curthread, oldcancel); 604 605 return ret; 606 } 607 608 __weak_reference(__writev, writev); 609 610 ssize_t 611 __writev(int fd, const struct iovec *iov, int iovcnt) 612 { 613 struct pthread *curthread = _get_curthread(); 614 int oldcancel; 615 ssize_t ret; 616 617 oldcancel = _thr_cancel_enter(curthread); 618 ret = __sys_writev(fd, iov, iovcnt); 619 _thr_cancel_leave(curthread, oldcancel); 620 621 return ret; 622 } 623