diff options
Diffstat (limited to 'support')
| -rw-r--r-- | support/Makefile | 6 | ||||
| -rw-r--r-- | support/xraise.c | 27 | ||||
| -rw-r--r-- | support/xsigaction.c | 27 | ||||
| -rw-r--r-- | support/xsignal.c | 29 | ||||
| -rw-r--r-- | support/xsignal.h | 8 | ||||
| -rw-r--r-- | support/xsysconf.c | 36 | ||||
| -rw-r--r-- | support/xunistd.h | 1 |
7 files changed, 133 insertions, 1 deletions
diff --git a/support/Makefile b/support/Makefile index bb81825fc2..bfde79333e 100644 --- a/support/Makefile +++ b/support/Makefile @@ -87,8 +87,8 @@ libsupport-routines = \ xpthread_attr_destroy \ xpthread_attr_init \ xpthread_attr_setdetachstate \ - xpthread_attr_setstacksize \ xpthread_attr_setguardsize \ + xpthread_attr_setstacksize \ xpthread_barrier_destroy \ xpthread_barrier_init \ xpthread_barrier_wait \ @@ -119,14 +119,18 @@ libsupport-routines = \ xpthread_sigmask \ xpthread_spin_lock \ xpthread_spin_unlock \ + xraise \ xreadlink \ xrealloc \ xrecvfrom \ xsendto \ xsetsockopt \ + xsigaction \ + xsignal \ xsocket \ xstrdup \ xstrndup \ + xsysconf \ xunlink \ xwaitpid \ xwrite \ diff --git a/support/xraise.c b/support/xraise.c new file mode 100644 index 0000000000..9126c6c3ea --- /dev/null +++ b/support/xraise.c @@ -0,0 +1,27 @@ +/* Error-checking wrapper for raise. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <support/check.h> +#include <support/xsignal.h> + +void +xraise (int sig) +{ + if (raise (sig) != 0) + FAIL_EXIT1 ("raise (%d): %m" , sig); +} diff --git a/support/xsigaction.c b/support/xsigaction.c new file mode 100644 index 0000000000..b74c69afae --- /dev/null +++ b/support/xsigaction.c @@ -0,0 +1,27 @@ +/* Error-checking wrapper for sigaction. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <support/check.h> +#include <support/xsignal.h> + +void +xsigaction (int sig, const struct sigaction *newact, struct sigaction *oldact) +{ + if (sigaction (sig, newact, oldact)) + FAIL_EXIT1 ("sigaction (%d): %m" , sig); +} diff --git a/support/xsignal.c b/support/xsignal.c new file mode 100644 index 0000000000..22a1dd74a7 --- /dev/null +++ b/support/xsignal.c @@ -0,0 +1,29 @@ +/* Error-checking wrapper for signal. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <support/check.h> +#include <support/xsignal.h> + +sighandler_t +xsignal (int sig, sighandler_t handler) +{ + sighandler_t result = signal (sig, handler); + if (result == SIG_ERR) + FAIL_EXIT1 ("signal (%d, %p): %m", sig, handler); + return result; +} diff --git a/support/xsignal.h b/support/xsignal.h index 3dc0d9d5ce..3087ed0082 100644 --- a/support/xsignal.h +++ b/support/xsignal.h @@ -24,6 +24,14 @@ __BEGIN_DECLS +/* The following functions call the corresponding libc functions and + terminate the process on error. */ + +void xraise (int sig); +sighandler_t xsignal (int sig, sighandler_t handler); +void xsigaction (int sig, const struct sigaction *newact, + struct sigaction *oldact); + /* The following functions call the corresponding libpthread functions and terminate the process on error. */ diff --git a/support/xsysconf.c b/support/xsysconf.c new file mode 100644 index 0000000000..15ab1e26c4 --- /dev/null +++ b/support/xsysconf.c @@ -0,0 +1,36 @@ +/* Error-checking wrapper for sysconf. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <support/check.h> +#include <support/xunistd.h> + +long +xsysconf (int name) +{ + /* Detect errors by a changed errno value, in case -1 is a valid + value. Make sure that the caller does not see the zero value for + errno. */ + int old_errno = errno; + errno = 0; + long result = sysconf (name); + if (errno != 0) + FAIL_EXIT1 ("sysconf (%d): %m", name); + errno = old_errno; + return result; +} diff --git a/support/xunistd.h b/support/xunistd.h index 05c2626a7b..00376f7aae 100644 --- a/support/xunistd.h +++ b/support/xunistd.h @@ -39,6 +39,7 @@ void xstat (const char *path, struct stat64 *); void xmkdir (const char *path, mode_t); void xchroot (const char *path); void xunlink (const char *path); +long xsysconf (int name); /* Read the link at PATH. The caller should free the returned string with free. */ |