| /* Copyright (C) 1997-2018 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 <string.h> |
| #include <sysdep-cancel.h> |
| |
| int |
| __sigtimedwait (const sigset_t *set, siginfo_t *info, |
| const struct timespec *timeout) |
| { |
| sigset_t tmpset; |
| if (set != NULL |
| && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) |
| || __builtin_expect (__sigismember (set, SIGSETXID), 0))) |
| { |
| /* Create a temporary mask without the bit for SIGCANCEL set. */ |
| // We are not copying more than we have to. |
| memcpy (&tmpset, set, _NSIG / 8); |
| __sigdelset (&tmpset, SIGCANCEL); |
| __sigdelset (&tmpset, SIGSETXID); |
| set = &tmpset; |
| } |
| |
| /* XXX The size argument hopefully will have to be changed to the |
| real size of the user-level sigset_t. */ |
| int result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, timeout, _NSIG / 8); |
| |
| /* The kernel generates a SI_TKILL code in si_code in case tkill is |
| used. tkill is transparently used in raise(). Since having |
| SI_TKILL as a code is useful in general we fold the results |
| here. */ |
| if (result != -1 && info != NULL && info->si_code == SI_TKILL) |
| info->si_code = SI_USER; |
| |
| return result; |
| } |
| libc_hidden_def (__sigtimedwait) |
| weak_alias (__sigtimedwait, sigtimedwait) |
