1112918Sjeff/* 2277317Skib * Copyright (c) 2014 The FreeBSD Foundation. 3144518Sdavidxu * Copyright (C) 2005 David Xu <davidxu@freebsd.org>. 4144518Sdavidxu * Copyright (c) 2003 Daniel Eischen <deischen@freebsd.org>. 5144518Sdavidxu * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>. 6112918Sjeff * All rights reserved. 7112918Sjeff * 8277317Skib * Portions of this software were developed by Konstantin Belousov 9277317Skib * under sponsorship from the FreeBSD Foundation. 10277317Skib * 11112918Sjeff * Redistribution and use in source and binary forms, with or without 12112918Sjeff * modification, are permitted provided that the following conditions 13112918Sjeff * are met: 14112918Sjeff * 1. Redistributions of source code must retain the above copyright 15112918Sjeff * notice(s), this list of conditions and the following disclaimer as 16112918Sjeff * the first lines of this file unmodified other than the possible 17112918Sjeff * addition of one or more copyright notices. 18112918Sjeff * 2. Redistributions in binary form must reproduce the above copyright 19112918Sjeff * notice(s), this list of conditions and the following disclaimer in 20112918Sjeff * the documentation and/or other materials provided with the 21112918Sjeff * distribution. 22112918Sjeff * 23112918Sjeff * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 24112918Sjeff * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25112918Sjeff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26112918Sjeff * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE 27112918Sjeff * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28112918Sjeff * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29112918Sjeff * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 30112918Sjeff * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31112918Sjeff * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 32112918Sjeff * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 33112918Sjeff * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34112918Sjeff */ 35112918Sjeff 36112918Sjeff/* 37112918Sjeff * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 38112918Sjeff * All rights reserved. 39112918Sjeff * 40112918Sjeff * Redistribution and use in source and binary forms, with or without 41112918Sjeff * modification, are permitted provided that the following conditions 42112918Sjeff * are met: 43112918Sjeff * 1. Redistributions of source code must retain the above copyright 44112918Sjeff * notice, this list of conditions and the following disclaimer. 45112918Sjeff * 2. Redistributions in binary form must reproduce the above copyright 46112918Sjeff * notice, this list of conditions and the following disclaimer in the 47112918Sjeff * documentation and/or other materials provided with the distribution. 48165967Simp * 3. Neither the name of the author nor the names of any co-contributors 49112918Sjeff * may be used to endorse or promote products derived from this software 50112918Sjeff * without specific prior written permission. 51112918Sjeff * 52112918Sjeff * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 53112918Sjeff * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54112918Sjeff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55112918Sjeff * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 56112918Sjeff * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57112918Sjeff * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58112918Sjeff * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59112918Sjeff * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60112918Sjeff * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61112918Sjeff * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62112918Sjeff * SUCH DAMAGE. 63112918Sjeff * 64112918Sjeff */ 65112918Sjeff 66277317Skib#include <sys/cdefs.h> 67277317Skib__FBSDID("$FreeBSD$"); 68277317Skib 69157457Sdavidxu#include "namespace.h" 70144518Sdavidxu#include <sys/types.h> 71112918Sjeff#include <sys/mman.h> 72112918Sjeff#include <sys/param.h> 73112918Sjeff#include <sys/select.h> 74144518Sdavidxu#include <sys/signalvar.h> 75135301Smtm#include <sys/socket.h> 76144518Sdavidxu#include <sys/stat.h> 77112918Sjeff#include <sys/time.h> 78112918Sjeff#include <sys/uio.h> 79112918Sjeff#include <sys/wait.h> 80112918Sjeff#include <aio.h> 81112918Sjeff#include <dirent.h> 82112918Sjeff#include <errno.h> 83112918Sjeff#include <fcntl.h> 84112918Sjeff#include <poll.h> 85112918Sjeff#include <signal.h> 86112918Sjeff#include <stdarg.h> 87112918Sjeff#include <stdio.h> 88112918Sjeff#include <stdlib.h> 89112918Sjeff#include <string.h> 90112918Sjeff#include <termios.h> 91112918Sjeff#include <unistd.h> 92144518Sdavidxu#include <pthread.h> 93157457Sdavidxu#include "un-namespace.h" 94112918Sjeff 95277317Skib#include "libc_private.h" 96112918Sjeff#include "thr_private.h" 97112918Sjeff 98189549Sdavidxu#ifdef SYSCALL_COMPAT 99277317Skibextern int __fcntl_compat(int, int, ...); 100189549Sdavidxu#endif 101157457Sdavidxu 102277317Skibstatic int 103277317Skib__thr_accept(int s, struct sockaddr *addr, socklen_t *addrlen) 104135301Smtm{ 105144518Sdavidxu struct pthread *curthread; 106135301Smtm int ret; 107135301Smtm 108144518Sdavidxu curthread = _get_curthread(); 109212076Sdavidxu _thr_cancel_enter(curthread); 110135301Smtm ret = __sys_accept(s, addr, addrlen); 111212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 112144518Sdavidxu 113144518Sdavidxu return (ret); 114135301Smtm} 115135301Smtm 116250154Sjilles/* 117250154Sjilles * Cancellation behavior: 118250154Sjilles * If thread is canceled, no socket is created. 119250154Sjilles */ 120277317Skibstatic int 121277317Skib__thr_accept4(int s, struct sockaddr *addr, socklen_t *addrlen, int flags) 122250154Sjilles{ 123250154Sjilles struct pthread *curthread; 124250154Sjilles int ret; 125250154Sjilles 126250154Sjilles curthread = _get_curthread(); 127250154Sjilles _thr_cancel_enter(curthread); 128250154Sjilles ret = __sys_accept4(s, addr, addrlen, flags); 129250154Sjilles _thr_cancel_leave(curthread, ret == -1); 130250154Sjilles 131250154Sjilles return (ret); 132250154Sjilles} 133250154Sjilles 134277317Skibstatic int 135277317Skib__thr_aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 136112918Sjeff timespec *timeout) 137112918Sjeff{ 138277317Skib struct pthread *curthread; 139144518Sdavidxu int ret; 140112918Sjeff 141277317Skib curthread = _get_curthread(); 142164583Sdavidxu _thr_cancel_enter(curthread); 143112918Sjeff ret = __sys_aio_suspend(iocbs, niocb, timeout); 144212076Sdavidxu _thr_cancel_leave(curthread, 1); 145112918Sjeff 146144518Sdavidxu return (ret); 147112918Sjeff} 148112918Sjeff 149211524Sdavidxu/* 150211524Sdavidxu * Cancellation behavior: 151211524Sdavidxu * According to manual of close(), the file descriptor is always deleted. 152211524Sdavidxu * Here, thread is only canceled after the system call, so the file 153211524Sdavidxu * descriptor is always deleted despite whether the thread is canceled 154211524Sdavidxu * or not. 155211524Sdavidxu */ 156277317Skibstatic int 157277317Skib__thr_close(int fd) 158112918Sjeff{ 159277317Skib struct pthread *curthread; 160277317Skib int ret; 161112918Sjeff 162277317Skib curthread = _get_curthread(); 163212076Sdavidxu _thr_cancel_enter2(curthread, 0); 164112918Sjeff ret = __sys_close(fd); 165212076Sdavidxu _thr_cancel_leave(curthread, 1); 166112918Sjeff 167144518Sdavidxu return (ret); 168112918Sjeff} 169135301Smtm 170211524Sdavidxu/* 171211524Sdavidxu * Cancellation behavior: 172211524Sdavidxu * If the thread is canceled, connection is not made. 173211524Sdavidxu */ 174277317Skibstatic int 175277317Skib__thr_connect(int fd, const struct sockaddr *name, socklen_t namelen) 176135301Smtm{ 177277317Skib struct pthread *curthread; 178135301Smtm int ret; 179135301Smtm 180277317Skib curthread = _get_curthread(); 181212076Sdavidxu _thr_cancel_enter(curthread); 182144518Sdavidxu ret = __sys_connect(fd, name, namelen); 183212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 184144518Sdavidxu 185144518Sdavidxu return (ret); 186135301Smtm} 187112918Sjeff 188211524Sdavidxu/* 189211524Sdavidxu * Cancellation behavior: 190211524Sdavidxu * According to specification, only F_SETLKW is a cancellation point. 191211524Sdavidxu * Thread is only canceled at start, or canceled if the system call 192211524Sdavidxu * is failure, this means the function does not generate side effect 193211524Sdavidxu * if it is canceled. 194211524Sdavidxu */ 195277317Skibstatic int 196277317Skib__thr_fcntl(int fd, int cmd, ...) 197112918Sjeff{ 198277317Skib struct pthread *curthread; 199277317Skib int ret; 200112918Sjeff va_list ap; 201211524Sdavidxu 202277317Skib curthread = _get_curthread(); 203112918Sjeff va_start(ap, cmd); 204212076Sdavidxu if (cmd == F_OSETLKW || cmd == F_SETLKW) { 205212076Sdavidxu _thr_cancel_enter(curthread); 206211522Sdavidxu#ifdef SYSCALL_COMPAT 207211522Sdavidxu ret = __fcntl_compat(fd, cmd, va_arg(ap, void *)); 208211522Sdavidxu#else 209211522Sdavidxu ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 210211522Sdavidxu#endif 211212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 212212076Sdavidxu } else { 213189549Sdavidxu#ifdef SYSCALL_COMPAT 214179434Sdfr ret = __fcntl_compat(fd, cmd, va_arg(ap, void *)); 215189549Sdavidxu#else 216189553Sdavidxu ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 217189549Sdavidxu#endif 218112918Sjeff } 219112918Sjeff va_end(ap); 220112918Sjeff 221144518Sdavidxu return (ret); 222112918Sjeff} 223112918Sjeff 224211524Sdavidxu/* 225211524Sdavidxu * Cancellation behavior: 226211524Sdavidxu * Thread may be canceled after system call. 227211524Sdavidxu */ 228277317Skibstatic int 229277317Skib__thr_fsync(int fd) 230131181Smtm{ 231277317Skib struct pthread *curthread; 232277317Skib int ret; 233131181Smtm 234277317Skib curthread = _get_curthread(); 235212076Sdavidxu _thr_cancel_enter2(curthread, 0); 236112918Sjeff ret = __sys_fsync(fd); 237212076Sdavidxu _thr_cancel_leave(curthread, 1); 238112918Sjeff 239144518Sdavidxu return (ret); 240112918Sjeff} 241112918Sjeff 242211524Sdavidxu/* 243211524Sdavidxu * Cancellation behavior: 244211524Sdavidxu * Thread may be canceled after system call. 245211524Sdavidxu */ 246277317Skibstatic int 247277317Skib__thr_msync(void *addr, size_t len, int flags) 248135301Smtm{ 249277317Skib struct pthread *curthread; 250277317Skib int ret; 251112918Sjeff 252277317Skib curthread = _get_curthread(); 253212076Sdavidxu _thr_cancel_enter2(curthread, 0); 254112918Sjeff ret = __sys_msync(addr, len, flags); 255212076Sdavidxu _thr_cancel_leave(curthread, 1); 256112918Sjeff 257277317Skib return (ret); 258112918Sjeff} 259112918Sjeff 260277317Skibstatic int 261277317Skib__thr_nanosleep(const struct timespec *time_to_sleep, 262144518Sdavidxu struct timespec *time_remaining) 263112918Sjeff{ 264277317Skib struct pthread *curthread; 265277317Skib int ret; 266112918Sjeff 267277317Skib curthread = _get_curthread(); 268164583Sdavidxu _thr_cancel_enter(curthread); 269112918Sjeff ret = __sys_nanosleep(time_to_sleep, time_remaining); 270212076Sdavidxu _thr_cancel_leave(curthread, 1); 271112918Sjeff 272144518Sdavidxu return (ret); 273112918Sjeff} 274112918Sjeff 275211524Sdavidxu/* 276211524Sdavidxu * Cancellation behavior: 277211524Sdavidxu * If the thread is canceled, file is not opened. 278211524Sdavidxu */ 279277317Skibstatic int 280277317Skib__thr_openat(int fd, const char *path, int flags, ...) 281112918Sjeff{ 282277317Skib struct pthread *curthread; 283277317Skib int mode, ret; 284112918Sjeff va_list ap; 285112918Sjeff 286112918Sjeff 287197968Sjilles /* Check if the file is being created: */ 288277317Skib if ((flags & O_CREAT) != 0) { 289197968Sjilles /* Get the creation mode: */ 290197968Sjilles va_start(ap, flags); 291197968Sjilles mode = va_arg(ap, int); 292197968Sjilles va_end(ap); 293277317Skib } else { 294277317Skib mode = 0; 295197968Sjilles } 296197968Sjilles 297277317Skib curthread = _get_curthread(); 298212076Sdavidxu _thr_cancel_enter(curthread); 299197968Sjilles ret = __sys_openat(fd, path, flags, mode); 300212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 301197968Sjilles 302277317Skib return (ret); 303197968Sjilles} 304197968Sjilles 305211524Sdavidxu/* 306211524Sdavidxu * Cancellation behavior: 307211524Sdavidxu * Thread may be canceled at start, but if the system call returns something, 308211524Sdavidxu * the thread is not canceled. 309211524Sdavidxu */ 310277317Skibstatic int 311277317Skib__thr_poll(struct pollfd *fds, unsigned int nfds, int timeout) 312112918Sjeff{ 313277317Skib struct pthread *curthread; 314112918Sjeff int ret; 315112918Sjeff 316277317Skib curthread = _get_curthread(); 317212076Sdavidxu _thr_cancel_enter(curthread); 318112918Sjeff ret = __sys_poll(fds, nfds, timeout); 319212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 320112918Sjeff 321277317Skib return (ret); 322112918Sjeff} 323112918Sjeff 324211524Sdavidxu/* 325211524Sdavidxu * Cancellation behavior: 326211524Sdavidxu * Thread may be canceled at start, but if the system call returns something, 327211524Sdavidxu * the thread is not canceled. 328211524Sdavidxu */ 329277317Skibstatic int 330281981Skib__thr_ppoll(struct pollfd pfd[], nfds_t nfds, const struct timespec * 331281981Skib timeout, const sigset_t *newsigmask) 332281981Skib{ 333281981Skib struct pthread *curthread; 334281981Skib int ret; 335281981Skib 336281981Skib curthread = _get_curthread(); 337281981Skib _thr_cancel_enter(curthread); 338281981Skib ret = __sys_ppoll(pfd, nfds, timeout, newsigmask); 339281981Skib _thr_cancel_leave(curthread, ret == -1); 340281981Skib 341281981Skib return (ret); 342281981Skib} 343281981Skib 344281981Skib/* 345281981Skib * Cancellation behavior: 346281981Skib * Thread may be canceled at start, but if the system call returns something, 347281981Skib * the thread is not canceled. 348281981Skib */ 349281981Skibstatic int 350277317Skib__thr_pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 351112918Sjeff const struct timespec *timo, const sigset_t *mask) 352112918Sjeff{ 353277317Skib struct pthread *curthread; 354112918Sjeff int ret; 355112918Sjeff 356277317Skib curthread = _get_curthread(); 357212076Sdavidxu _thr_cancel_enter(curthread); 358198508Skib ret = __sys_pselect(count, rfds, wfds, efds, timo, mask); 359212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 360112918Sjeff 361112918Sjeff return (ret); 362112918Sjeff} 363112918Sjeff 364281454Skibstatic int 365281454Skib__thr_kevent(int kq, const struct kevent *changelist, int nchanges, 366281454Skib struct kevent *eventlist, int nevents, const struct timespec *timeout) 367281454Skib{ 368281454Skib struct pthread *curthread; 369281454Skib int ret; 370281454Skib 371281454Skib if (nevents == 0) { 372281454Skib /* 373281454Skib * No blocking, do not make the call cancellable. 374281454Skib */ 375281454Skib return (__sys_kevent(kq, changelist, nchanges, eventlist, 376281454Skib nevents, timeout)); 377281454Skib } 378281454Skib curthread = _get_curthread(); 379281454Skib _thr_cancel_enter(curthread); 380281454Skib ret = __sys_kevent(kq, changelist, nchanges, eventlist, nevents, 381281454Skib timeout); 382281454Skib _thr_cancel_leave(curthread, ret == -1 && nchanges == 0); 383281454Skib 384281454Skib return (ret); 385281454Skib} 386281454Skib 387211524Sdavidxu/* 388211524Sdavidxu * Cancellation behavior: 389211524Sdavidxu * Thread may be canceled at start, but if the system call got some data, 390211524Sdavidxu * the thread is not canceled. 391211524Sdavidxu */ 392277317Skibstatic ssize_t 393277317Skib__thr_read(int fd, void *buf, size_t nbytes) 394112918Sjeff{ 395277317Skib struct pthread *curthread; 396112918Sjeff ssize_t ret; 397112918Sjeff 398277317Skib curthread = _get_curthread(); 399212076Sdavidxu _thr_cancel_enter(curthread); 400112918Sjeff ret = __sys_read(fd, buf, nbytes); 401212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 402112918Sjeff 403277317Skib return (ret); 404112918Sjeff} 405112918Sjeff 406211524Sdavidxu/* 407211524Sdavidxu * Cancellation behavior: 408211524Sdavidxu * Thread may be canceled at start, but if the system call got some data, 409211524Sdavidxu * the thread is not canceled. 410211524Sdavidxu */ 411277317Skibstatic ssize_t 412277317Skib__thr_readv(int fd, const struct iovec *iov, int iovcnt) 413112918Sjeff{ 414277317Skib struct pthread *curthread; 415112918Sjeff ssize_t ret; 416112918Sjeff 417277317Skib curthread = _get_curthread(); 418212076Sdavidxu _thr_cancel_enter(curthread); 419112918Sjeff ret = __sys_readv(fd, iov, iovcnt); 420212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 421277317Skib return (ret); 422112918Sjeff} 423112918Sjeff 424211524Sdavidxu/* 425211524Sdavidxu * Cancellation behavior: 426211524Sdavidxu * Thread may be canceled at start, but if the system call got some data, 427211524Sdavidxu * the thread is not canceled. 428211524Sdavidxu */ 429277317Skibstatic ssize_t 430277317Skib__thr_recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 431135301Smtm socklen_t *fl) 432135301Smtm{ 433277317Skib struct pthread *curthread; 434135301Smtm ssize_t ret; 435135301Smtm 436277317Skib curthread = _get_curthread(); 437212076Sdavidxu _thr_cancel_enter(curthread); 438135301Smtm ret = __sys_recvfrom(s, b, l, f, from, fl); 439212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 440135301Smtm return (ret); 441135301Smtm} 442135301Smtm 443211524Sdavidxu/* 444211524Sdavidxu * Cancellation behavior: 445211524Sdavidxu * Thread may be canceled at start, but if the system call got some data, 446211524Sdavidxu * the thread is not canceled. 447211524Sdavidxu */ 448277317Skibstatic ssize_t 449277317Skib__thr_recvmsg(int s, struct msghdr *m, int f) 450135301Smtm{ 451277317Skib struct pthread *curthread; 452135301Smtm ssize_t ret; 453135301Smtm 454277317Skib curthread = _get_curthread(); 455212076Sdavidxu _thr_cancel_enter(curthread); 456135301Smtm ret = __sys_recvmsg(s, m, f); 457212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 458135301Smtm return (ret); 459135301Smtm} 460135301Smtm 461211524Sdavidxu/* 462211524Sdavidxu * Cancellation behavior: 463211524Sdavidxu * Thread may be canceled at start, but if the system call returns something, 464211524Sdavidxu * the thread is not canceled. 465211524Sdavidxu */ 466277317Skibstatic int 467277317Skib__thr_select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 468112918Sjeff struct timeval *timeout) 469112918Sjeff{ 470277317Skib struct pthread *curthread; 471112918Sjeff int ret; 472112918Sjeff 473277317Skib curthread = _get_curthread(); 474212076Sdavidxu _thr_cancel_enter(curthread); 475112918Sjeff ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 476212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 477277317Skib return (ret); 478112918Sjeff} 479112918Sjeff 480211524Sdavidxu/* 481211524Sdavidxu * Cancellation behavior: 482211524Sdavidxu * Thread may be canceled at start, but if the system call sent 483211524Sdavidxu * data, the thread is not canceled. 484211524Sdavidxu */ 485277317Skibstatic ssize_t 486277317Skib__thr_sendmsg(int s, const struct msghdr *m, int f) 487135301Smtm{ 488277317Skib struct pthread *curthread; 489135301Smtm ssize_t ret; 490135301Smtm 491277317Skib curthread = _get_curthread(); 492212076Sdavidxu _thr_cancel_enter(curthread); 493135301Smtm ret = __sys_sendmsg(s, m, f); 494212076Sdavidxu _thr_cancel_leave(curthread, ret <= 0); 495135301Smtm return (ret); 496135301Smtm} 497135301Smtm 498211524Sdavidxu/* 499211524Sdavidxu * Cancellation behavior: 500211524Sdavidxu * Thread may be canceled at start, but if the system call sent some 501211524Sdavidxu * data, the thread is not canceled. 502211524Sdavidxu */ 503277317Skibstatic ssize_t 504277317Skib__thr_sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 505135301Smtm socklen_t tl) 506135301Smtm{ 507277317Skib struct pthread *curthread; 508135301Smtm ssize_t ret; 509135301Smtm 510277317Skib curthread = _get_curthread(); 511212076Sdavidxu _thr_cancel_enter(curthread); 512135301Smtm ret = __sys_sendto(s, m, l, f, t, tl); 513212076Sdavidxu _thr_cancel_leave(curthread, ret <= 0); 514135301Smtm return (ret); 515135301Smtm} 516135301Smtm 517277317Skibstatic int 518277317Skib__thr_system(const char *string) 519112918Sjeff{ 520277317Skib struct pthread *curthread; 521277317Skib int ret; 522112918Sjeff 523277317Skib curthread = _get_curthread(); 524164583Sdavidxu _thr_cancel_enter(curthread); 525277317Skib ret = __libc_system(string); 526212076Sdavidxu _thr_cancel_leave(curthread, 1); 527144518Sdavidxu return (ret); 528112918Sjeff} 529112918Sjeff 530211524Sdavidxu/* 531211524Sdavidxu * Cancellation behavior: 532211524Sdavidxu * If thread is canceled, the system call is not completed, 533211524Sdavidxu * this means not all bytes were drained. 534211524Sdavidxu */ 535277317Skibstatic int 536277317Skib__thr_tcdrain(int fd) 537112918Sjeff{ 538277317Skib struct pthread *curthread; 539277317Skib int ret; 540112918Sjeff 541277317Skib curthread = _get_curthread(); 542212076Sdavidxu _thr_cancel_enter(curthread); 543277317Skib ret = __libc_tcdrain(fd); 544212076Sdavidxu _thr_cancel_leave(curthread, ret == -1); 545144518Sdavidxu return (ret); 546112918Sjeff} 547112918Sjeff 548211524Sdavidxu/* 549211524Sdavidxu * Cancellation behavior: 550211524Sdavidxu * Thread may be canceled at start, but if the system call returns 551211524Sdavidxu * a child pid, the thread is not canceled. 552211524Sdavidxu */ 553277317Skibstatic pid_t 554277317Skib__thr_wait4(pid_t pid, int *status, int options, struct rusage *rusage) 555112918Sjeff{ 556277317Skib struct pthread *curthread; 557160662Sdavidxu pid_t ret; 558160662Sdavidxu 559277317Skib curthread = _get_curthread(); 560212076Sdavidxu _thr_cancel_enter(curthread); 561277317Skib ret = __sys_wait4(pid, status, options, rusage); 562212076Sdavidxu _thr_cancel_leave(curthread, ret <= 0); 563160662Sdavidxu return (ret); 564160662Sdavidxu} 565160662Sdavidxu 566211524Sdavidxu/* 567211524Sdavidxu * Cancellation behavior: 568281981Skib * Thread may be canceled at start, but if the system call returns 569281981Skib * a child pid, the thread is not canceled. 570281981Skib */ 571281981Skibstatic pid_t 572281981Skib__thr_wait6(idtype_t idtype, id_t id, int *status, int options, 573281981Skib struct __wrusage *ru, siginfo_t *infop) 574281981Skib{ 575281981Skib struct pthread *curthread; 576281981Skib pid_t ret; 577281981Skib 578281981Skib curthread = _get_curthread(); 579281981Skib _thr_cancel_enter(curthread); 580281981Skib ret = __sys_wait6(idtype, id, status, options, ru, infop); 581281981Skib _thr_cancel_leave(curthread, ret <= 0); 582281981Skib return (ret); 583281981Skib} 584281981Skib 585281981Skib/* 586281981Skib * Cancellation behavior: 587211524Sdavidxu * Thread may be canceled at start, but if the thread wrote some data, 588211524Sdavidxu * it is not canceled. 589211524Sdavidxu */ 590277317Skibstatic ssize_t 591277317Skib__thr_write(int fd, const void *buf, size_t nbytes) 592112918Sjeff{ 593277317Skib struct pthread *curthread; 594112918Sjeff ssize_t ret; 595112918Sjeff 596277317Skib curthread = _get_curthread(); 597212076Sdavidxu _thr_cancel_enter(curthread); 598112918Sjeff ret = __sys_write(fd, buf, nbytes); 599212076Sdavidxu _thr_cancel_leave(curthread, (ret <= 0)); 600277317Skib return (ret); 601112918Sjeff} 602112918Sjeff 603211524Sdavidxu/* 604211524Sdavidxu * Cancellation behavior: 605211524Sdavidxu * Thread may be canceled at start, but if the thread wrote some data, 606211524Sdavidxu * it is not canceled. 607211524Sdavidxu */ 608277317Skibstatic ssize_t 609277317Skib__thr_writev(int fd, const struct iovec *iov, int iovcnt) 610112918Sjeff{ 611277317Skib struct pthread *curthread; 612112918Sjeff ssize_t ret; 613112918Sjeff 614277317Skib curthread = _get_curthread(); 615212076Sdavidxu _thr_cancel_enter(curthread); 616112918Sjeff ret = __sys_writev(fd, iov, iovcnt); 617212076Sdavidxu _thr_cancel_leave(curthread, (ret <= 0)); 618277317Skib return (ret); 619112918Sjeff} 620277317Skib 621277317Skibvoid 622277317Skib__thr_interpose_libc(void) 623277317Skib{ 624277317Skib 625277317Skib __set_error_selector(__error_threaded); 626277317Skib#define SLOT(name) \ 627277317Skib *(__libc_interposing_slot(INTERPOS_##name)) = \ 628277317Skib (interpos_func_t)__thr_##name; 629277317Skib SLOT(accept); 630277317Skib SLOT(accept4); 631277317Skib SLOT(aio_suspend); 632277317Skib SLOT(close); 633277317Skib SLOT(connect); 634277317Skib SLOT(fcntl); 635277317Skib SLOT(fsync); 636277317Skib SLOT(fork); 637277317Skib SLOT(msync); 638277317Skib SLOT(nanosleep); 639277317Skib SLOT(openat); 640277317Skib SLOT(poll); 641277317Skib SLOT(pselect); 642277317Skib SLOT(read); 643277317Skib SLOT(readv); 644277317Skib SLOT(recvfrom); 645277317Skib SLOT(recvmsg); 646277317Skib SLOT(select); 647277317Skib SLOT(sendmsg); 648277317Skib SLOT(sendto); 649277317Skib SLOT(setcontext); 650277317Skib SLOT(sigaction); 651277317Skib SLOT(sigprocmask); 652277317Skib SLOT(sigsuspend); 653277317Skib SLOT(sigwait); 654277317Skib SLOT(sigtimedwait); 655277317Skib SLOT(sigwaitinfo); 656277317Skib SLOT(swapcontext); 657277317Skib SLOT(system); 658277317Skib SLOT(tcdrain); 659277317Skib SLOT(wait4); 660277317Skib SLOT(write); 661277317Skib SLOT(writev); 662278875Skib SLOT(spinlock); 663278875Skib SLOT(spinunlock); 664281454Skib SLOT(kevent); 665281981Skib SLOT(wait6); 666281981Skib SLOT(ppoll); 667296732Skib SLOT(map_stacks_exec); 668277317Skib#undef SLOT 669277317Skib *(__libc_interposing_slot( 670277317Skib INTERPOS__pthread_mutex_init_calloc_cb)) = 671277317Skib (interpos_func_t)_pthread_mutex_init_calloc_cb; 672277317Skib} 673