1 /* 2 * Copyright (c) 2000 Jason Evans <jasone@freebsd.org>. 3 * Copyright (c) 2002 Daniel M. Eischen <deischen@freebsd.org> 4 * Copyright (c) 2003 Jeff Roberson <jeff@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/cdefs.h> 68 #include <sys/fcntl.h> 69 #include <sys/mman.h> 70 #include <sys/param.h> 71 #include <sys/select.h> 72 #include <sys/time.h> 73 #include <sys/types.h> 74 #include <sys/uio.h> 75 #include <sys/wait.h> 76 77 #include <aio.h> 78 #include <dirent.h> 79 #include <errno.h> 80 #include <fcntl.h> 81 #include <poll.h> 82 #include <pthread.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 91 #include "thr_private.h" 92 93 extern int __creat(const char *, mode_t); 94 extern int __sleep(unsigned int); 95 extern int __sys_nanosleep(const struct timespec *, struct timespec *); 96 extern int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 97 extern int __system(const char *); 98 extern int __tcdrain(int); 99 extern pid_t __wait(int *); 100 extern pid_t _wait4(pid_t, int *, int, struct rusage *); 101 extern pid_t __waitpid(pid_t, int *, int); 102 103 __weak_reference(_aio_suspend, aio_suspend); 104 105 int 106 _aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 107 timespec *timeout) 108 { 109 int ret; 110 111 _thread_enter_cancellation_point(); 112 ret = __sys_aio_suspend(iocbs, niocb, timeout); 113 _thread_leave_cancellation_point(); 114 115 return ret; 116 } 117 118 __weak_reference(__close, close); 119 120 int 121 __close(int fd) 122 { 123 int ret; 124 125 _thread_enter_cancellation_point(); 126 ret = __sys_close(fd); 127 _thread_leave_cancellation_point(); 128 129 return ret; 130 } 131 __weak_reference(___creat, creat); 132 133 int 134 ___creat(const char *path, mode_t mode) 135 { 136 int ret; 137 138 _thread_enter_cancellation_point(); 139 ret = __creat(path, mode); 140 _thread_leave_cancellation_point(); 141 142 return ret; 143 } 144 145 __weak_reference(__fcntl, fcntl); 146 147 int 148 __fcntl(int fd, int cmd,...) 149 { 150 int ret; 151 va_list ap; 152 153 _thread_enter_cancellation_point(); 154 155 va_start(ap, cmd); 156 switch (cmd) { 157 case F_DUPFD: 158 case F_SETFD: 159 case F_SETFL: 160 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 161 break; 162 case F_GETFD: 163 case F_GETFL: 164 ret = __sys_fcntl(fd, cmd); 165 break; 166 default: 167 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 168 } 169 va_end(ap); 170 171 _thread_leave_cancellation_point(); 172 173 return ret; 174 } 175 176 __weak_reference(__fsync, fsync); 177 178 int 179 __fsync(int fd) 180 { 181 int ret; 182 183 _thread_enter_cancellation_point(); 184 ret = __sys_fsync(fd); 185 _thread_leave_cancellation_point(); 186 187 return ret; 188 } 189 190 __weak_reference(__msync, msync); 191 192 int 193 __msync(void *addr, size_t len, int flags) 194 { 195 int ret; 196 197 _thread_enter_cancellation_point(); 198 ret = __sys_msync(addr, len, flags); 199 _thread_leave_cancellation_point(); 200 201 return ret; 202 } 203 204 __weak_reference(_nanosleep, nanosleep); 205 206 int 207 _nanosleep(const struct timespec * time_to_sleep, struct timespec * 208 time_remaining) 209 { 210 int ret; 211 212 _thread_enter_cancellation_point(); 213 ret = __sys_nanosleep(time_to_sleep, time_remaining); 214 _thread_leave_cancellation_point(); 215 216 return ret; 217 } 218 219 __weak_reference(__open, open); 220 221 int 222 __open(const char *path, int flags,...) 223 { 224 int ret; 225 int mode = 0; 226 va_list ap; 227 228 _thread_enter_cancellation_point(); 229 230 /* Check if the file is being created: */ 231 if (flags & O_CREAT) { 232 /* Get the creation mode: */ 233 va_start(ap, flags); 234 mode = va_arg(ap, int); 235 va_end(ap); 236 } 237 238 ret = __sys_open(path, flags, mode); 239 _thread_leave_cancellation_point(); 240 241 return ret; 242 } 243 244 __weak_reference(__poll, poll); 245 246 int 247 __poll(struct pollfd *fds, unsigned int nfds, int timeout) 248 { 249 int ret; 250 251 _thread_enter_cancellation_point(); 252 ret = __sys_poll(fds, nfds, timeout); 253 _thread_leave_cancellation_point(); 254 255 return ret; 256 } 257 258 extern int __pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 259 const struct timespec *timo, const sigset_t *mask); 260 261 int 262 pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 263 const struct timespec *timo, const sigset_t *mask) 264 { 265 int ret; 266 267 _thread_enter_cancellation_point(); 268 ret = __pselect(count, rfds, wfds, efds, timo, mask); 269 _thread_leave_cancellation_point(); 270 271 return (ret); 272 } 273 274 __weak_reference(__read, read); 275 276 ssize_t 277 __read(int fd, void *buf, size_t nbytes) 278 { 279 ssize_t ret; 280 281 _thread_enter_cancellation_point(); 282 ret = __sys_read(fd, buf, nbytes); 283 _thread_leave_cancellation_point(); 284 285 return ret; 286 } 287 288 __weak_reference(__readv, readv); 289 290 ssize_t 291 __readv(int fd, const struct iovec *iov, int iovcnt) 292 { 293 ssize_t ret; 294 295 _thread_enter_cancellation_point(); 296 ret = __sys_readv(fd, iov, iovcnt); 297 _thread_leave_cancellation_point(); 298 299 return ret; 300 } 301 302 __weak_reference(__select, select); 303 304 int 305 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 306 struct timeval *timeout) 307 { 308 int ret; 309 310 _thread_enter_cancellation_point(); 311 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 312 _thread_leave_cancellation_point(); 313 314 return ret; 315 } 316 317 __weak_reference(_sleep, sleep); 318 319 unsigned int 320 _sleep(unsigned int seconds) 321 { 322 unsigned int ret; 323 324 _thread_enter_cancellation_point(); 325 ret = __sleep(seconds); 326 _thread_leave_cancellation_point(); 327 328 return ret; 329 } 330 331 __weak_reference(_system, system); 332 333 int 334 _system(const char *string) 335 { 336 int ret; 337 338 _thread_enter_cancellation_point(); 339 ret = __system(string); 340 _thread_leave_cancellation_point(); 341 342 return ret; 343 } 344 345 346 __weak_reference(_tcdrain, tcdrain); 347 348 int 349 _tcdrain(int fd) 350 { 351 int ret; 352 353 _thread_enter_cancellation_point(); 354 ret = __tcdrain(fd); 355 _thread_leave_cancellation_point(); 356 357 return ret; 358 } 359 360 __weak_reference(_wait, wait); 361 362 pid_t 363 _wait(int *istat) 364 { 365 pid_t ret; 366 367 _thread_enter_cancellation_point(); 368 ret = __wait(istat); 369 _thread_leave_cancellation_point(); 370 371 return ret; 372 } 373 374 __weak_reference(__wait4, wait4); 375 376 pid_t 377 __wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 378 { 379 pid_t ret; 380 381 _thread_enter_cancellation_point(); 382 ret = _wait4(pid, istat, options, rusage); 383 _thread_leave_cancellation_point(); 384 385 return ret; 386 } 387 388 __weak_reference(_waitpid, waitpid); 389 390 pid_t 391 _waitpid(pid_t wpid, int *status, int options) 392 { 393 pid_t ret; 394 395 _thread_enter_cancellation_point(); 396 ret = __waitpid(wpid, status, options); 397 _thread_leave_cancellation_point(); 398 399 return ret; 400 } 401 402 __weak_reference(__write, write); 403 404 ssize_t 405 __write(int fd, const void *buf, size_t nbytes) 406 { 407 ssize_t ret; 408 409 _thread_enter_cancellation_point(); 410 ret = __sys_write(fd, buf, nbytes); 411 _thread_leave_cancellation_point(); 412 413 return ret; 414 } 415 416 __weak_reference(__writev, writev); 417 418 ssize_t 419 __writev(int fd, const struct iovec *iov, int iovcnt) 420 { 421 ssize_t ret; 422 423 _thread_enter_cancellation_point(); 424 ret = __sys_writev(fd, iov, iovcnt); 425 _thread_leave_cancellation_point(); 426 427 return ret; 428 } 429