projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 1997-2016 Free Software Foundation, Inc. |
| 554066b8 MS |
2 | |
| 3 | This file is part of the GNU C Library. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public License as | |
| 7 | published by the Free Software Foundation; either version 2.1 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library 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 GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | #include <errno.h> | |
| 20 | #include <signal.h> | |
| 21 | #include <string.h> | |
| 22 | ||
| 23 | #include <sysdep.h> | |
| 24 | #include <sys/syscall.h> | |
| 25 | ||
| 554066b8 MS |
26 | #define SA_RESTORER 0x04000000 |
| 27 | ||
| 28 | /* The difference here is that the sigaction structure used in the | |
| 29 | kernel is not the same as we use in the libc. Therefore we must | |
| 30 | translate it here. */ | |
| 31 | #include <kernel_sigaction.h> | |
| 32 | ||
| 33 | int | |
| 34 | __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact) | |
| 35 | { | |
| 36 | int result; | |
| 37 | struct kernel_sigaction kact; | |
| 38 | struct kernel_sigaction koact; | |
| 39 | ||
| 40 | if (act) | |
| 41 | { | |
| 42 | kact.k_sa_handler = act->sa_handler; | |
| 43 | memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t)); | |
| 44 | kact.sa_flags = act->sa_flags; | |
| 45 | #ifdef HAVE_SA_RESTORER | |
| 46 | if (kact.sa_flags & SA_RESTORER) | |
| 47 | kact.sa_restorer = act->sa_restorer; | |
| 48 | #endif | |
| 49 | } | |
| 50 | ||
| 51 | result = INLINE_SYSCALL (rt_sigaction, 4, sig, | |
| 70d9946a JM |
52 | act ? &kact : NULL, |
| 53 | oact ? &koact : NULL, _NSIG / 8); | |
| 554066b8 MS |
54 | if (result >= 0 || errno != ENOSYS) |
| 55 | { | |
| 56 | if (oact && result >= 0) | |
| 57 | { | |
| 58 | oact->sa_handler = koact.k_sa_handler; | |
| 59 | memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t)); | |
| 60 | oact->sa_flags = koact.sa_flags; | |
| 61 | #ifdef HAVE_SA_RESTORER | |
| 62 | oact->sa_restorer = koact.sa_restorer; | |
| 63 | #endif | |
| 64 | } | |
| 65 | } | |
| 66 | return result; | |
| 67 | } | |
| 68 | libc_hidden_def (__libc_sigaction) | |
| 69 | ||
| 08192659 | 70 | #include <nptl/sigaction.c> |