blob: 8d4665a607378d1af7c8e687a9f1d8cd772c1bee (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/* The proper definitions for Linux/SPARC sigaction.
Copyright (C) 1996-2018 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/>. */
#ifndef _BITS_SIGACTION_H
#define _BITS_SIGACTION_H 1
#ifndef _SIGNAL_H
# error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
#endif
#include <bits/wordsize.h>
/* Structure describing the action to be taken when a signal arrives. */
struct sigaction
{
/* Signal handler. */
#if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
union
{
/* Used if SA_SIGINFO is not set. */
__sighandler_t sa_handler;
/* Used if SA_SIGINFO is set. */
void (*sa_sigaction) (int, siginfo_t *, void *);
}
__sigaction_handler;
# define sa_handler __sigaction_handler.sa_handler
# define sa_sigaction __sigaction_handler.sa_sigaction
#else
__sighandler_t sa_handler;
#endif
/* Additional set of signals to be blocked. */
__sigset_t sa_mask;
/* Special flags. */
#if __WORDSIZE == 64
int __glibc_reserved0;
#endif
int sa_flags;
/* Not used by Linux/Sparc yet. */
void (*sa_restorer) (void);
};
/* Bits in `sa_flags'. */
#define SA_NOCLDSTOP 0x00000008 /* Don't send SIGCHLD when children stop. */
#define SA_NOCLDWAIT 0x00000100 /* Don't create zombie on child death. */
#define SA_SIGINFO 0x00000200 /* Invoke signal-catching function with
three arguments instead of one. */
#if defined __USE_XOPEN_EXTENDED || defined __USE_MISC
# define SA_ONSTACK 0x00000001 /* Use signal stack by using `sa_restorer'. */
#endif
#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
# define SA_RESTART 0x00000002 /* Restart syscall on signal return. */
# define SA_NODEFER 0x00000020 /* Don't automatically block the signal when
its handler is being executed. */
# define SA_RESETHAND 0x00000004 /* Reset to SIG_DFL on entry to handler. */
#endif
#ifdef __USE_MISC
# define SA_INTERRUPT 0x00000010 /* Historical no-op. */
/* Some aliases for the SA_ constants. */
# define SA_NOMASK SA_NODEFER
# define SA_ONESHOT SA_RESETHAND
# define SA_STACK SA_ONSTACK
#endif
/* Values for the HOW argument to `sigprocmask'. */
#define SIG_BLOCK 1 /* Block signals. */
#define SIG_UNBLOCK 2 /* Unblock signals. */
#define SIG_SETMASK 4 /* Set the set of blocked signals. */
#endif
|
