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Diffstat (limited to 'REORG.TODO/signal/sigrelse.c')
-rw-r--r-- | REORG.TODO/signal/sigrelse.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/REORG.TODO/signal/sigrelse.c b/REORG.TODO/signal/sigrelse.c new file mode 100644 index 0000000000..e41c2bd261 --- /dev/null +++ b/REORG.TODO/signal/sigrelse.c @@ -0,0 +1,39 @@ +/* Remove SIG from the calling process' signal mask. + Copyright (C) 1998-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + 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/>. */ + +#define __need_NULL +#include <stddef.h> +#include <signal.h> + +int +sigrelse (int sig) +{ + sigset_t set; + + /* Retrieve current signal set. */ + if (__sigprocmask (SIG_SETMASK, NULL, &set) < 0) + return -1; + + /* Remove the specified signal. */ + if (sigdelset (&set, sig) < 0) + return -1; + + /* Set the new mask. */ + return __sigprocmask (SIG_SETMASK, &set, NULL); +} |