2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file lib/syscalls.c
19 * @brief Error-checking library call wrappers
26 #include <sys/types.h>
27 #include <sys/socket.h>
35 int mustnotbeminus1(const char *what, int ret) {
37 fatal(errno, "error calling %s", what);
44 if((pid = fork()) < 0) fatal(errno, "error calling fork");
48 void xclose_guts(const char *path, int line, int fd) {
50 fatal(errno, "%s:%d: close %d", path, line, fd);
53 void xdup2(int fd1, int fd2) {
54 mustnotbeminus1("dup2", dup2(fd1, fd2));
57 void xpipe(int *fdp) {
58 mustnotbeminus1("pipe", pipe(fdp));
61 void nonblock(int fd) {
62 mustnotbeminus1("fcntl F_SETFL",
64 mustnotbeminus1("fcntl F_GETFL",
65 fcntl(fd, F_GETFL)) | O_NONBLOCK));
68 void blocking(int fd) {
69 mustnotbeminus1("fcntl F_SETFL",
71 mustnotbeminus1("fcntl F_GETFL",
72 fcntl(fd, F_GETFL)) & ~O_NONBLOCK));
75 void cloexec(int fd) {
76 mustnotbeminus1("fcntl F_SETFD",
78 mustnotbeminus1("fcntl F_GETFD",
79 fcntl(fd, F_GETFD)) | FD_CLOEXEC));
82 void xlisten(int fd, int q) {
83 mustnotbeminus1("listen", listen(fd, q));
86 void xshutdown(int fd, int how) {
87 mustnotbeminus1("shutdown", shutdown(fd, how));
90 void xsetsockopt(int fd, int l, int o, const void *v, socklen_t vl) {
91 mustnotbeminus1("setsockopt", setsockopt(fd, l, o, v, vl));
94 int xsocket(int d, int t, int p) {
95 return mustnotbeminus1("socket", socket(d, t, p));
98 void xconnect(int fd, const struct sockaddr *sa, socklen_t sl) {
99 mustnotbeminus1("connect", connect(fd, sa, sl));
102 void xsigprocmask(int how, const sigset_t *set, sigset_t *oldset) {
103 mustnotbeminus1("sigprocmask", sigprocmask(how, set, oldset));
106 void xsigaction(int sig, const struct sigaction *sa, struct sigaction *oldsa) {
107 mustnotbeminus1("sigaction", sigaction(sig, sa, oldsa));
110 int xprintf(const char *fmt, ...) {
115 n = mustnotbeminus1("byte_vfprintf", byte_vfprintf(stdout, fmt, ap));
120 void xfclose(FILE *fp) {
121 mustnotbeminus1("fclose", fclose(fp));
124 int xstrtol(long *n, const char *s, char **ep, int base) {
126 *n = strtol(s, ep, base);
130 int xstrtoll(long_long *n, const char *s, char **ep, int base) {
132 *n = strtoll(s, ep, base);
139 /* some versions of nice() return the new nice value which in principle could
143 if(errno) fatal(errno, "error calling nice");
147 void xgettimeofday(struct timeval *tv, struct timezone *tz) {
148 mustnotbeminus1("gettimeofday", gettimeofday(tv, tz));