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d5efd131 | 1 | /* Definitions for Linux/ia64 sigaction. |
d4697bc9 | 2 | Copyright (C) 1996-2014 Free Software Foundation, Inc. |
d5efd131 MF |
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 | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the 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 | |
75efb018 MF |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
d5efd131 MF |
18 | |
19 | #ifndef _SIGNAL_H | |
20 | # error "Never include <bits/sigaction.h> directly; use <signal.h> instead." | |
21 | #endif | |
22 | ||
23 | /* Structure describing the action to be taken when a signal arrives. */ | |
24 | struct sigaction | |
25 | { | |
26 | /* Signal handler. */ | |
27 | #ifdef __USE_POSIX199309 | |
28 | union | |
29 | { | |
30 | /* Used if SA_SIGINFO is not set. */ | |
31 | __sighandler_t sa_handler; | |
32 | /* Used if SA_SIGINFO is set. */ | |
33 | void (*sa_sigaction) (int, siginfo_t *, void *); | |
34 | } | |
35 | __sigaction_handler; | |
36 | # define sa_handler __sigaction_handler.sa_handler | |
37 | # define sa_sigaction __sigaction_handler.sa_sigaction | |
38 | #else | |
39 | __sighandler_t sa_handler; | |
40 | #endif | |
41 | ||
42 | /* Special flags. */ | |
43 | unsigned long int sa_flags; | |
44 | ||
45 | /* Additional set of signals to be blocked. */ | |
46 | __sigset_t sa_mask; | |
47 | }; | |
48 | ||
49 | /* Bits in `sa_flags'. */ | |
50 | #define SA_NOCLDSTOP 0x00000001 /* Don't send SIGCHLD when children stop. */ | |
51 | #define SA_NOCLDWAIT 0x00000002 /* Don't create zombie on child death. */ | |
52 | #define SA_SIGINFO 0x00000004 | |
53 | #if defined __USE_UNIX98 || defined __USE_MISC | |
54 | # define SA_ONSTACK 0x08000000 /* Use signal stack by using `sa_restorer'. */ | |
55 | #endif | |
acd7f096 | 56 | #if defined __USE_UNIX98 || defined __USE_XOPEN2K8 |
d5efd131 MF |
57 | # define SA_RESTART 0x10000000 /* Restart syscall on signal return. */ |
58 | # define SA_NODEFER 0x40000000 /* Don't automatically block the signal | |
59 | when its handler is being executed. */ | |
60 | # define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */ | |
61 | #endif | |
62 | #ifdef __USE_MISC | |
63 | # define SA_INTERRUPT 0x20000000 /* Historic no-op. */ | |
64 | ||
65 | /* Some aliases for the SA_ constants. */ | |
66 | # define SA_NOMASK SA_NODEFER | |
67 | # define SA_ONESHOT SA_RESETHAND | |
68 | # define SA_STACK SA_ONSTACK | |
69 | #endif | |
70 | ||
71 | /* Values for the HOW argument to `sigprocmask'. */ | |
72 | #define SIG_BLOCK 0 /* for blocking signals */ | |
73 | #define SIG_UNBLOCK 1 /* for unblocking signals */ | |
74 | #define SIG_SETMASK 2 /* for setting the signal mask */ |