diff options
Diffstat (limited to 'REORG.TODO/sysdeps/posix/sigsuspend.c')
-rw-r--r-- | REORG.TODO/sysdeps/posix/sigsuspend.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/posix/sigsuspend.c b/REORG.TODO/sysdeps/posix/sigsuspend.c new file mode 100644 index 0000000000..336a2e773e --- /dev/null +++ b/REORG.TODO/sysdeps/posix/sigsuspend.c @@ -0,0 +1,51 @@ +/* Copyright (C) 1991-2017 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 <signal.h> +#include <stddef.h> +#include <unistd.h> + + +/* Change the set of blocked signals to SET, + wait until a signal arrives, and restore the set of blocked signals. */ +int +__sigsuspend (const sigset_t *set) +{ + sigset_t oset; + int save; + + if (set == NULL) + { + __set_errno (EINVAL); + return -1; + } + + if (sigprocmask (SIG_SETMASK, set, &oset) < 0) + return -1; + + (void) pause(); + save = errno; + + if (sigprocmask (SIG_SETMASK, &oset, (sigset_t *) NULL) < 0) + return -1; + + __set_errno (save); + return -1; +} +libc_hidden_def (__sigsuspend) +weak_alias (__sigsuspend, sigsuspend) |