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 "namespace.h" 68 #include <sys/types.h> 69 #include <sys/mman.h> 70 #include <sys/param.h> 71 #include <sys/select.h> 72 #include <sys/signalvar.h> 73 #include <sys/socket.h> 74 #include <sys/stat.h> 75 #include <sys/time.h> 76 #include <sys/uio.h> 77 #include <sys/wait.h> 78 #include <aio.h> 79 #include <dirent.h> 80 #include <errno.h> 81 #include <fcntl.h> 82 #include <poll.h> 83 #include <signal.h> 84 #include <stdarg.h> 85 #include <stdio.h> 86 #include <stdlib.h> 87 #include <string.h> 88 #include <termios.h> 89 #include <unistd.h> 90 #include <pthread.h> 91 #include "un-namespace.h" 92 93 #include "thr_private.h" 94 95 extern int __creat(const char *, mode_t); 96 extern int __pause(void); 97 extern int __pselect(int, fd_set *, fd_set *, fd_set *, 98 const struct timespec *, const sigset_t *); 99 extern unsigned __sleep(unsigned int); 100 extern int __system(const char *); 101 extern int __tcdrain(int); 102 extern int __usleep(useconds_t); 103 extern pid_t __wait(int *); 104 extern pid_t __waitpid(pid_t, int *, int); 105 extern int __sys_aio_suspend(const struct aiocb * const[], int, 106 const struct timespec *); 107 extern int __sys_accept(int, struct sockaddr *, socklen_t *); 108 extern int __sys_connect(int, const struct sockaddr *, socklen_t); 109 extern int __sys_fsync(int); 110 extern int __sys_msync(void *, size_t, int); 111 extern int __sys_poll(struct pollfd *, unsigned, int); 112 extern ssize_t __sys_recv(int, void *, size_t, int); 113 extern ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 114 extern ssize_t __sys_recvmsg(int, struct msghdr *, int); 115 extern int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 116 extern int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 117 off_t *, int); 118 extern ssize_t __sys_sendmsg(int, const struct msghdr *, int); 119 extern ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 120 extern ssize_t __sys_readv(int, const struct iovec *, int); 121 extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 122 extern ssize_t __sys_writev(int, const struct iovec *, int); 123 124 int ___creat(const char *, mode_t); 125 int __accept(int, struct sockaddr *, socklen_t *); 126 int __close(int); 127 int __connect(int, const struct sockaddr *, socklen_t); 128 int __fcntl(int, int,...); 129 int __fsync(int); 130 int __msync(void *, size_t, int); 131 int __nanosleep(const struct timespec *, struct timespec *); 132 int __open(const char *, int,...); 133 int __poll(struct pollfd *, unsigned int, int); 134 ssize_t __read(int, void *buf, size_t); 135 ssize_t __readv(int, const struct iovec *, int); 136 ssize_t __recvfrom(int, void *, size_t, int f, struct sockaddr *, socklen_t *); 137 ssize_t __recvmsg(int, struct msghdr *, int); 138 int __select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 139 ssize_t __sendmsg(int, const struct msghdr *, int); 140 ssize_t __sendto(int, const void *, size_t, int, 141 const struct sockaddr *, socklen_t); 142 pid_t __wait4(pid_t, int *, int, struct rusage *); 143 ssize_t __write(int, const void *, size_t); 144 ssize_t __writev(int, const struct iovec *, int); 145 int _aio_suspend(const struct aiocb * const iocbs[], int, 146 const struct timespec *); 147 int _pause(void); 148 int _pselect(int, fd_set *, fd_set *, fd_set *, 149 const struct timespec *, const sigset_t *); 150 int _raise(int); 151 unsigned _sleep(unsigned); 152 int _system(const char *); 153 int _tcdrain(int); 154 int _vfork(void); 155 pid_t _wait(int *); 156 157 158 __weak_reference(__accept, accept); 159 160 int 161 __accept(int s, struct sockaddr *addr, socklen_t *addrlen) 162 { 163 struct pthread *curthread; 164 int oldcancel; 165 int ret; 166 167 curthread = _get_curthread(); 168 oldcancel = _thr_cancel_enter(curthread); 169 ret = __sys_accept(s, addr, addrlen); 170 _thr_cancel_leave(curthread, oldcancel); 171 172 return (ret); 173 } 174 175 __weak_reference(_aio_suspend, aio_suspend); 176 177 int 178 _aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 179 timespec *timeout) 180 { 181 struct pthread *curthread = _get_curthread(); 182 int oldcancel; 183 int ret; 184 185 oldcancel = _thr_cancel_enter(curthread); 186 ret = __sys_aio_suspend(iocbs, niocb, timeout); 187 _thr_cancel_leave(curthread, oldcancel); 188 189 return (ret); 190 } 191 192 __weak_reference(__close, close); 193 194 int 195 __close(int fd) 196 { 197 struct pthread *curthread = _get_curthread(); 198 int oldcancel; 199 int ret; 200 201 oldcancel = _thr_cancel_enter(curthread); 202 ret = __sys_close(fd); 203 _thr_cancel_leave(curthread, oldcancel); 204 205 return (ret); 206 } 207 208 __weak_reference(__connect, connect); 209 210 int 211 __connect(int fd, const struct sockaddr *name, socklen_t namelen) 212 { 213 struct pthread *curthread = _get_curthread(); 214 int oldcancel; 215 int ret; 216 217 oldcancel = _thr_cancel_enter(curthread); 218 ret = __sys_connect(fd, name, namelen); 219 _thr_cancel_leave(curthread, oldcancel); 220 221 return (ret); 222 } 223 224 __weak_reference(___creat, creat); 225 226 int 227 ___creat(const char *path, mode_t mode) 228 { 229 struct pthread *curthread = _get_curthread(); 230 int oldcancel; 231 int ret; 232 233 oldcancel = _thr_cancel_enter(curthread); 234 ret = __creat(path, mode); 235 _thr_cancel_leave(curthread, oldcancel); 236 237 return ret; 238 } 239 240 __weak_reference(__fcntl, fcntl); 241 242 int 243 __fcntl(int fd, int cmd,...) 244 { 245 struct pthread *curthread = _get_curthread(); 246 int oldcancel; 247 int ret; 248 va_list ap; 249 250 oldcancel = _thr_cancel_enter(curthread); 251 252 va_start(ap, cmd); 253 switch (cmd) { 254 case F_DUPFD: 255 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 256 break; 257 case F_SETFD: 258 case F_SETFL: 259 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 260 break; 261 case F_GETFD: 262 case F_GETFL: 263 ret = __sys_fcntl(fd, cmd); 264 break; 265 default: 266 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 267 } 268 va_end(ap); 269 270 _thr_cancel_leave(curthread, oldcancel); 271 272 return (ret); 273 } 274 275 __weak_reference(__fsync, fsync); 276 277 int 278 __fsync(int fd) 279 { 280 struct pthread *curthread = _get_curthread(); 281 int oldcancel; 282 int ret; 283 284 oldcancel = _thr_cancel_enter(curthread); 285 ret = __sys_fsync(fd); 286 _thr_cancel_leave(curthread, oldcancel); 287 288 return (ret); 289 } 290 291 __weak_reference(__msync, msync); 292 293 int 294 __msync(void *addr, size_t len, int flags) 295 { 296 struct pthread *curthread = _get_curthread(); 297 int oldcancel; 298 int ret; 299 300 oldcancel = _thr_cancel_enter(curthread); 301 ret = __sys_msync(addr, len, flags); 302 _thr_cancel_leave(curthread, oldcancel); 303 304 return ret; 305 } 306 307 __weak_reference(__nanosleep, nanosleep); 308 309 int 310 __nanosleep(const struct timespec *time_to_sleep, 311 struct timespec *time_remaining) 312 { 313 struct pthread *curthread = _get_curthread(); 314 int oldcancel; 315 int ret; 316 317 oldcancel = _thr_cancel_enter(curthread); 318 ret = __sys_nanosleep(time_to_sleep, time_remaining); 319 _thr_cancel_leave(curthread, oldcancel); 320 321 return (ret); 322 } 323 324 __weak_reference(__open, open); 325 326 int 327 __open(const char *path, int flags,...) 328 { 329 struct pthread *curthread = _get_curthread(); 330 int oldcancel; 331 int ret; 332 int mode = 0; 333 va_list ap; 334 335 oldcancel = _thr_cancel_enter(curthread); 336 337 /* Check if the file is being created: */ 338 if (flags & O_CREAT) { 339 /* Get the creation mode: */ 340 va_start(ap, flags); 341 mode = va_arg(ap, int); 342 va_end(ap); 343 } 344 345 ret = __sys_open(path, flags, mode); 346 347 _thr_cancel_leave(curthread, oldcancel); 348 349 return ret; 350 } 351 352 __weak_reference(_pause, pause); 353 354 int 355 _pause(void) 356 { 357 struct pthread *curthread = _get_curthread(); 358 int oldcancel; 359 int ret; 360 361 oldcancel = _thr_cancel_enter(curthread); 362 ret = __pause(); 363 _thr_cancel_leave(curthread, oldcancel); 364 365 return ret; 366 } 367 368 __weak_reference(__poll, poll); 369 370 int 371 __poll(struct pollfd *fds, unsigned int nfds, int timeout) 372 { 373 struct pthread *curthread = _get_curthread(); 374 int oldcancel; 375 int ret; 376 377 oldcancel = _thr_cancel_enter(curthread); 378 ret = __sys_poll(fds, nfds, timeout); 379 _thr_cancel_leave(curthread, oldcancel); 380 381 return ret; 382 } 383 384 __weak_reference(_pselect, pselect); 385 386 int 387 _pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 388 const struct timespec *timo, const sigset_t *mask) 389 { 390 struct pthread *curthread = _get_curthread(); 391 int oldcancel; 392 int ret; 393 394 oldcancel = _thr_cancel_enter(curthread); 395 ret = __pselect(count, rfds, wfds, efds, timo, mask); 396 _thr_cancel_leave(curthread, oldcancel); 397 398 return (ret); 399 } 400 401 __weak_reference(_raise, raise); 402 403 int 404 _raise(int sig) 405 { 406 int ret; 407 408 if (!_thr_isthreaded()) 409 ret = kill(getpid(), sig); 410 else 411 ret = _thr_send_sig(_get_curthread(), sig); 412 return (ret); 413 } 414 415 __weak_reference(__read, read); 416 417 ssize_t 418 __read(int fd, void *buf, size_t nbytes) 419 { 420 struct pthread *curthread = _get_curthread(); 421 int oldcancel; 422 ssize_t ret; 423 424 oldcancel = _thr_cancel_enter(curthread); 425 ret = __sys_read(fd, buf, nbytes); 426 _thr_cancel_leave(curthread, oldcancel); 427 428 return ret; 429 } 430 431 __weak_reference(__readv, readv); 432 433 ssize_t 434 __readv(int fd, const struct iovec *iov, int iovcnt) 435 { 436 struct pthread *curthread = _get_curthread(); 437 int oldcancel; 438 ssize_t ret; 439 440 oldcancel = _thr_cancel_enter(curthread); 441 ret = __sys_readv(fd, iov, iovcnt); 442 _thr_cancel_leave(curthread, oldcancel); 443 444 return ret; 445 } 446 447 __weak_reference(__recvfrom, recvfrom); 448 449 ssize_t 450 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 451 socklen_t *fl) 452 { 453 struct pthread *curthread = _get_curthread(); 454 int oldcancel; 455 ssize_t ret; 456 457 oldcancel = _thr_cancel_enter(curthread); 458 ret = __sys_recvfrom(s, b, l, f, from, fl); 459 _thr_cancel_leave(curthread, oldcancel); 460 return (ret); 461 } 462 463 __weak_reference(__recvmsg, recvmsg); 464 465 ssize_t 466 __recvmsg(int s, struct msghdr *m, int f) 467 { 468 struct pthread *curthread = _get_curthread(); 469 ssize_t ret; 470 int oldcancel; 471 472 oldcancel = _thr_cancel_enter(curthread); 473 ret = __sys_recvmsg(s, m, f); 474 _thr_cancel_leave(curthread, oldcancel); 475 return (ret); 476 } 477 478 __weak_reference(__select, select); 479 480 int 481 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 482 struct timeval *timeout) 483 { 484 struct pthread *curthread = _get_curthread(); 485 int oldcancel; 486 int ret; 487 488 oldcancel = _thr_cancel_enter(curthread); 489 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 490 _thr_cancel_leave(curthread, oldcancel); 491 return ret; 492 } 493 494 __weak_reference(__sendmsg, sendmsg); 495 496 ssize_t 497 __sendmsg(int s, const struct msghdr *m, int f) 498 { 499 struct pthread *curthread = _get_curthread(); 500 ssize_t ret; 501 int oldcancel; 502 503 oldcancel = _thr_cancel_enter(curthread); 504 ret = __sys_sendmsg(s, m, f); 505 _thr_cancel_leave(curthread, oldcancel); 506 return (ret); 507 } 508 509 __weak_reference(__sendto, sendto); 510 511 ssize_t 512 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 513 socklen_t tl) 514 { 515 struct pthread *curthread = _get_curthread(); 516 ssize_t ret; 517 int oldcancel; 518 519 oldcancel = _thr_cancel_enter(curthread); 520 ret = __sys_sendto(s, m, l, f, t, tl); 521 _thr_cancel_leave(curthread, oldcancel); 522 return (ret); 523 } 524 525 __weak_reference(_sleep, sleep); 526 527 unsigned int 528 _sleep(unsigned int seconds) 529 { 530 struct pthread *curthread = _get_curthread(); 531 int oldcancel; 532 unsigned int ret; 533 534 oldcancel = _thr_cancel_enter(curthread); 535 ret = __sleep(seconds); 536 _thr_cancel_leave(curthread, oldcancel); 537 538 return (ret); 539 } 540 541 __weak_reference(_system, system); 542 543 int 544 _system(const char *string) 545 { 546 struct pthread *curthread = _get_curthread(); 547 int oldcancel; 548 int ret; 549 550 oldcancel = _thr_cancel_enter(curthread); 551 ret = __system(string); 552 _thr_cancel_leave(curthread, oldcancel); 553 554 return ret; 555 } 556 557 __weak_reference(_tcdrain, tcdrain); 558 559 int 560 _tcdrain(int fd) 561 { 562 struct pthread *curthread = _get_curthread(); 563 int oldcancel; 564 int ret; 565 566 oldcancel = _thr_cancel_enter(curthread); 567 ret = __tcdrain(fd); 568 _thr_cancel_leave(curthread, oldcancel); 569 570 return (ret); 571 } 572 573 __weak_reference(_usleep, usleep); 574 575 int 576 _usleep(useconds_t useconds) 577 { 578 struct pthread *curthread = _get_curthread(); 579 int oldcancel; 580 int ret; 581 582 oldcancel = _thr_cancel_enter(curthread); 583 ret = __usleep(useconds); 584 _thr_cancel_leave(curthread, oldcancel); 585 586 return (ret); 587 } 588 589 __weak_reference(_vfork, vfork); 590 591 int 592 _vfork(void) 593 { 594 return (fork()); 595 } 596 597 __weak_reference(_wait, wait); 598 599 pid_t 600 _wait(int *istat) 601 { 602 struct pthread *curthread = _get_curthread(); 603 int oldcancel; 604 pid_t ret; 605 606 oldcancel = _thr_cancel_enter(curthread); 607 ret = __wait(istat); 608 _thr_cancel_leave(curthread, oldcancel); 609 610 return ret; 611 } 612 613 __weak_reference(__wait4, wait4); 614 615 pid_t 616 __wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 617 { 618 struct pthread *curthread = _get_curthread(); 619 int oldcancel; 620 pid_t ret; 621 622 oldcancel = _thr_cancel_enter(curthread); 623 ret = __sys_wait4(pid, istat, options, rusage); 624 _thr_cancel_leave(curthread, oldcancel); 625 626 return ret; 627 } 628 629 __weak_reference(_waitpid, waitpid); 630 631 pid_t 632 _waitpid(pid_t wpid, int *status, int options) 633 { 634 struct pthread *curthread = _get_curthread(); 635 int oldcancel; 636 pid_t ret; 637 638 oldcancel = _thr_cancel_enter(curthread); 639 ret = __waitpid(wpid, status, options); 640 _thr_cancel_leave(curthread, oldcancel); 641 642 return ret; 643 } 644 645 __weak_reference(__write, write); 646 647 ssize_t 648 __write(int fd, const void *buf, size_t nbytes) 649 { 650 struct pthread *curthread = _get_curthread(); 651 int oldcancel; 652 ssize_t ret; 653 654 oldcancel = _thr_cancel_enter(curthread); 655 ret = __sys_write(fd, buf, nbytes); 656 _thr_cancel_leave(curthread, oldcancel); 657 658 return ret; 659 } 660 661 __weak_reference(__writev, writev); 662 663 ssize_t 664 __writev(int fd, const struct iovec *iov, int iovcnt) 665 { 666 struct pthread *curthread = _get_curthread(); 667 int oldcancel; 668 ssize_t ret; 669 670 oldcancel = _thr_cancel_enter(curthread); 671 ret = __sys_writev(fd, iov, iovcnt); 672 _thr_cancel_leave(curthread, oldcancel); 673 674 return ret; 675 } 676