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eec226c3 | 1 | /* The proper definitions for Linux/MIPS's sigaction. |
d4697bc9 | 2 | Copyright (C) 1993-2014 Free Software Foundation, Inc. |
eec226c3 UD |
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 | |
3214b89b AJ |
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. | |
eec226c3 UD |
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 | |
3214b89b | 13 | Lesser General Public License for more details. |
eec226c3 | 14 | |
3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
eec226c3 | 18 | |
90571408 UD |
19 | #ifndef _SIGNAL_H |
20 | # error "Never include <bits/sigaction.h> directly; use <signal.h> instead." | |
21 | #endif | |
22 | ||
eec226c3 UD |
23 | /* Structure describing the action to be taken when a signal arrives. */ |
24 | struct sigaction | |
25 | { | |
26 | /* Special flags. */ | |
27 | unsigned int sa_flags; | |
28 | ||
29 | /* Signal handler. */ | |
61758030 UD |
30 | #ifdef __USE_POSIX199309 |
31 | union | |
32 | { | |
33 | /* Used if SA_SIGINFO is not set. */ | |
34 | __sighandler_t sa_handler; | |
35 | /* Used if SA_SIGINFO is set. */ | |
93b2a8e7 | 36 | void (*sa_sigaction) (int, siginfo_t *, void *); |
61758030 UD |
37 | } |
38 | __sigaction_handler; | |
39 | # define sa_handler __sigaction_handler.sa_handler | |
40 | # define sa_sigaction __sigaction_handler.sa_sigaction | |
41 | #else | |
eec226c3 | 42 | __sighandler_t sa_handler; |
61758030 | 43 | #endif |
eec226c3 UD |
44 | /* Additional set of signals to be blocked. */ |
45 | __sigset_t sa_mask; | |
46 | ||
47 | /* The ABI says here are two unused ints following. */ | |
48 | /* Restore handler. */ | |
93b2a8e7 | 49 | void (*sa_restorer) (void); |
eec226c3 | 50 | |
f4e9c08c | 51 | #if _MIPS_SZPTR < 64 |
eec226c3 UD |
52 | int sa_resv[1]; |
53 | #endif | |
54 | }; | |
55 | ||
56 | /* Bits in `sa_flags'. */ | |
e7a486ef UD |
57 | /* Please note that some Linux kernels versions use different values for these |
58 | flags which is a bug in those kernel versions. */ | |
59 | #define SA_NOCLDSTOP 0x00000001 /* Don't send SIGCHLD when children stop. */ | |
15833193 | 60 | #define SA_NOCLDWAIT 0x00010000 /* Don't create zombie on child death. */ |
61758030 UD |
61 | #define SA_SIGINFO 0x00000008 /* Invoke signal-catching function with |
62 | three arguments instead of one. */ | |
63 | #if defined __USE_UNIX98 || defined __USE_MISC | |
e7a486ef | 64 | # define SA_ONSTACK 0x08000000 /* Use signal stack by using `sa_restorer'. */ |
31afac47 JM |
65 | #endif |
66 | #if defined __USE_UNIX98 || defined __USE_MISC || defined __USE_XOPEN2K8 | |
e7a486ef UD |
67 | # define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */ |
68 | # define SA_RESTART 0x10000000 /* Restart syscall on signal return. */ | |
69 | # define SA_NODEFER 0x40000000 /* Don't automatically block the signal when | |
17cf8c5c | 70 | its handler is being executed. */ |
61758030 UD |
71 | #endif |
72 | #ifdef __USE_MISC | |
e7a486ef | 73 | # define SA_INTERRUPT 0x20000000 /* Historical no-op. */ |
eec226c3 UD |
74 | |
75 | /* Some aliases for the SA_ constants. */ | |
17cf8c5c UD |
76 | # define SA_NOMASK SA_NODEFER |
77 | # define SA_ONESHOT SA_RESETHAND | |
b7204490 | 78 | # define SA_STACK SA_ONSTACK |
eec226c3 UD |
79 | #endif |
80 | ||
81 | /* Values for the HOW argument to `sigprocmask'. */ | |
17cf8c5c UD |
82 | #define SIG_NOP 0 /* 0 is unused to catch errors */ |
83 | #define SIG_BLOCK 1 /* Block signals. */ | |
84 | #define SIG_UNBLOCK 2 /* Unblock signals. */ | |
85 | #define SIG_SETMASK 3 /* Set the set of blocked signals. */ | |
61758030 UD |
86 | #ifdef __USE_MISC |
87 | # define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility: | |
eec226c3 | 88 | set only the low 32 bit of the sigset. */ |
61758030 | 89 | #endif |