1 /* Definitions for 31 & 64 bit S/390 sigaction.
2 Copyright (C) 2001-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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 <https://www.gnu.org/licenses/>. */
19 #ifndef _BITS_SIGACTION_H
20 #define _BITS_SIGACTION_H 1
23 # error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
26 #include <bits/wordsize.h>
29 /* Structure describing the action to be taken when a signal arrives. */
33 #if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
36 /* Used if SA_SIGINFO is not set. */
37 __sighandler_t sa_handler
;
38 /* Used if SA_SIGINFO is set. */
39 void (*sa_sigaction
) (int, siginfo_t
*, void *);
42 # define sa_handler __sigaction_handler.sa_handler
43 # define sa_sigaction __sigaction_handler.sa_sigaction
45 __sighandler_t sa_handler
;
49 int __glibc_reserved0
;
52 /* Restore handler. */
53 void (*sa_restorer
) (void);
55 /* Additional set of signals to be blocked. */
59 /* Structure describing the action to be taken when a signal arrives. */
63 #if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
66 /* Used if SA_SIGINFO is not set. */
67 __sighandler_t sa_handler
;
68 /* Used if SA_SIGINFO is set. */
69 void (*sa_sigaction
) (int, siginfo_t
*, void *);
72 # define sa_handler __sigaction_handler.sa_handler
73 # define sa_sigaction __sigaction_handler.sa_sigaction
75 __sighandler_t sa_handler
;
78 /* Additional set of signals to be blocked. */
84 /* Restore handler. */
85 void (*sa_restorer
) (void);
89 /* Bits in `sa_flags'. */
90 #define SA_NOCLDSTOP 1 /* Don't send SIGCHLD when children stop. */
91 #define SA_NOCLDWAIT 2 /* Don't create zombie on child death. */
92 #define SA_SIGINFO 4 /* Invoke signal-catching function with
93 three arguments instead of one. */
94 #if defined __USE_XOPEN_EXTENDED || defined __USE_MISC
95 # define SA_ONSTACK 0x08000000 /* Use signal stack by using `sa_restorer'. */
97 #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
98 # define SA_RESTART 0x10000000 /* Restart syscall on signal return. */
99 # define SA_NODEFER 0x40000000 /* Don't automatically block the signal when
100 its handler is being executed. */
101 # define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */
104 # define SA_INTERRUPT 0x20000000 /* Historical no-op. */
106 /* Some aliases for the SA_ constants. */
107 # define SA_NOMASK SA_NODEFER
108 # define SA_ONESHOT SA_RESETHAND
109 # define SA_STACK SA_ONSTACK
112 /* Values for the HOW argument to `sigprocmask'. */
113 #define SIG_BLOCK 0 /* Block signals. */
114 #define SIG_UNBLOCK 1 /* Unblock signals. */
115 #define SIG_SETMASK 2 /* Set the set of blocked signals. */