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 * $DragonFly: src/lib/libthread_xu/thread/thr_syscalls.c,v 1.2 2005/02/21 13:40:00 davidxu Exp $ 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/cdefs.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 92 #include "thr_private.h" 93 94 extern int __creat(const char *, mode_t); 95 extern int __pause(void); 96 extern int __pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 97 const struct timespec *timo, const sigset_t *mask); 98 extern unsigned int __sleep(unsigned int); 99 extern int __system(const char *); 100 extern int __tcdrain(int); 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 #if 0 332 __weak_reference(_pselect, pselect); 333 334 int 335 _pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 336 const struct timespec *timo, const sigset_t *mask) 337 { 338 struct pthread *curthread = _get_curthread(); 339 int oldcancel; 340 int ret; 341 342 oldcancel = _thr_cancel_enter(curthread); 343 ret = __pselect(count, rfds, wfds, efds, timo, mask); 344 _thr_cancel_leave(curthread, oldcancel); 345 346 return (ret); 347 } 348 #endif 349 350 __weak_reference(_raise, raise); 351 352 int 353 _raise(int sig) 354 { 355 int ret; 356 357 if (!_thr_isthreaded()) 358 ret = kill(getpid(), sig); 359 else { 360 ret = pthread_kill(pthread_self(), sig); 361 if (ret != 0) { 362 errno = ret; 363 ret = -1; 364 } 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 int oldcancel; 376 ssize_t ret; 377 378 oldcancel = _thr_cancel_enter(curthread); 379 ret = __sys_read(fd, buf, nbytes); 380 _thr_cancel_leave(curthread, oldcancel); 381 382 return ret; 383 } 384 385 __weak_reference(__readv, readv); 386 387 ssize_t 388 __readv(int fd, const struct iovec *iov, int iovcnt) 389 { 390 struct pthread *curthread = _get_curthread(); 391 int oldcancel; 392 ssize_t ret; 393 394 oldcancel = _thr_cancel_enter(curthread); 395 ret = __sys_readv(fd, iov, iovcnt); 396 _thr_cancel_leave(curthread, oldcancel); 397 398 return ret; 399 } 400 401 __weak_reference(__recvfrom, recvfrom); 402 403 ssize_t 404 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 405 socklen_t *fl) 406 { 407 struct pthread *curthread = _get_curthread(); 408 int oldcancel; 409 ssize_t ret; 410 411 oldcancel = _thr_cancel_enter(curthread); 412 ret = __sys_recvfrom(s, b, l, f, from, fl); 413 _thr_cancel_leave(curthread, oldcancel); 414 return (ret); 415 } 416 417 __weak_reference(__recvmsg, recvmsg); 418 419 ssize_t 420 __recvmsg(int s, struct msghdr *m, int f) 421 { 422 struct pthread *curthread = _get_curthread(); 423 ssize_t ret; 424 int oldcancel; 425 426 oldcancel = _thr_cancel_enter(curthread); 427 ret = __sys_recvmsg(s, m, f); 428 _thr_cancel_leave(curthread, oldcancel); 429 return (ret); 430 } 431 432 __weak_reference(__select, select); 433 434 int 435 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 436 struct timeval *timeout) 437 { 438 struct pthread *curthread = _get_curthread(); 439 int oldcancel; 440 int ret; 441 442 oldcancel = _thr_cancel_enter(curthread); 443 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 444 _thr_cancel_leave(curthread, oldcancel); 445 return ret; 446 } 447 448 __weak_reference(__sendmsg, sendmsg); 449 450 ssize_t 451 __sendmsg(int s, const struct msghdr *m, int f) 452 { 453 struct pthread *curthread = _get_curthread(); 454 ssize_t ret; 455 int oldcancel; 456 457 oldcancel = _thr_cancel_enter(curthread); 458 ret = __sys_sendmsg(s, m, f); 459 _thr_cancel_leave(curthread, oldcancel); 460 return (ret); 461 } 462 463 __weak_reference(__sendto, sendto); 464 465 ssize_t 466 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 467 socklen_t tl) 468 { 469 struct pthread *curthread = _get_curthread(); 470 ssize_t ret; 471 int oldcancel; 472 473 oldcancel = _thr_cancel_enter(curthread); 474 ret = __sys_sendto(s, m, l, f, t, tl); 475 _thr_cancel_leave(curthread, oldcancel); 476 return (ret); 477 } 478 479 unsigned int 480 _sleep(unsigned int seconds) 481 { 482 struct pthread *curthread = _get_curthread(); 483 int oldcancel; 484 unsigned int ret; 485 486 oldcancel = _thr_cancel_enter(curthread); 487 ret = __sleep(seconds); 488 _thr_cancel_leave(curthread, oldcancel); 489 490 return (ret); 491 } 492 493 __weak_reference(_system, system); 494 495 int 496 _system(const char *string) 497 { 498 struct pthread *curthread = _get_curthread(); 499 int oldcancel; 500 int ret; 501 502 oldcancel = _thr_cancel_enter(curthread); 503 ret = __system(string); 504 _thr_cancel_leave(curthread, oldcancel); 505 506 return ret; 507 } 508 509 __weak_reference(_tcdrain, tcdrain); 510 511 int 512 _tcdrain(int fd) 513 { 514 struct pthread *curthread = _get_curthread(); 515 int oldcancel; 516 int ret; 517 518 oldcancel = _thr_cancel_enter(curthread); 519 ret = __tcdrain(fd); 520 _thr_cancel_leave(curthread, oldcancel); 521 522 return (ret); 523 } 524 525 __weak_reference(_vfork, vfork); 526 527 int 528 _vfork(void) 529 { 530 return (fork()); 531 } 532 533 __weak_reference(_wait, wait); 534 535 pid_t 536 _wait(int *istat) 537 { 538 struct pthread *curthread = _get_curthread(); 539 int oldcancel; 540 pid_t ret; 541 542 oldcancel = _thr_cancel_enter(curthread); 543 ret = __wait(istat); 544 _thr_cancel_leave(curthread, oldcancel); 545 546 return ret; 547 } 548 549 __weak_reference(__wait4, wait4); 550 551 pid_t 552 __wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 553 { 554 struct pthread *curthread = _get_curthread(); 555 int oldcancel; 556 pid_t ret; 557 558 oldcancel = _thr_cancel_enter(curthread); 559 ret = __sys_wait4(pid, istat, options, rusage); 560 _thr_cancel_leave(curthread, oldcancel); 561 562 return ret; 563 } 564 565 __weak_reference(_waitpid, waitpid); 566 567 pid_t 568 _waitpid(pid_t wpid, int *status, int options) 569 { 570 struct pthread *curthread = _get_curthread(); 571 int oldcancel; 572 pid_t ret; 573 574 oldcancel = _thr_cancel_enter(curthread); 575 ret = __waitpid(wpid, status, options); 576 _thr_cancel_leave(curthread, oldcancel); 577 578 return ret; 579 } 580 581 __weak_reference(__write, write); 582 583 ssize_t 584 __write(int fd, const void *buf, size_t nbytes) 585 { 586 struct pthread *curthread = _get_curthread(); 587 int oldcancel; 588 ssize_t ret; 589 590 oldcancel = _thr_cancel_enter(curthread); 591 ret = __sys_write(fd, buf, nbytes); 592 _thr_cancel_leave(curthread, oldcancel); 593 594 return ret; 595 } 596 597 __weak_reference(__writev, writev); 598 599 ssize_t 600 __writev(int fd, const struct iovec *iov, int iovcnt) 601 { 602 struct pthread *curthread = _get_curthread(); 603 int oldcancel; 604 ssize_t ret; 605 606 oldcancel = _thr_cancel_enter(curthread); 607 ret = __sys_writev(fd, iov, iovcnt); 608 _thr_cancel_leave(curthread, oldcancel); 609 610 return ret; 611 } 612