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Greg Kroah-Hartmane2be04c2017-11-01 15:09:13 +01001/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
David Howells61730c52012-10-09 09:47:14 +01002/*
3 * This file is subject to the terms and conditions of the GNU General Public
4 * License. See the file "COPYING" in the main directory of this archive
5 * for more details.
6 *
7 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
8 * Copyright (C) 1999 Silicon Graphics, Inc.
9 */
10#ifndef _UAPI_ASM_SIGNAL_H
11#define _UAPI_ASM_SIGNAL_H
12
13#include <linux/types.h>
14
15#define _NSIG 128
16#define _NSIG_BPW (sizeof(unsigned long) * 8)
17#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
18
19typedef struct {
20 unsigned long sig[_NSIG_WORDS];
21} sigset_t;
22
23typedef unsigned long old_sigset_t; /* at least 32 bits */
24
25#define SIGHUP 1 /* Hangup (POSIX). */
26#define SIGINT 2 /* Interrupt (ANSI). */
27#define SIGQUIT 3 /* Quit (POSIX). */
Ralf Baechle70342282013-01-22 12:59:30 +010028#define SIGILL 4 /* Illegal instruction (ANSI). */
29#define SIGTRAP 5 /* Trace trap (POSIX). */
30#define SIGIOT 6 /* IOT trap (4.2 BSD). */
31#define SIGABRT SIGIOT /* Abort (ANSI). */
David Howells61730c52012-10-09 09:47:14 +010032#define SIGEMT 7
33#define SIGFPE 8 /* Floating-point exception (ANSI). */
34#define SIGKILL 9 /* Kill, unblockable (POSIX). */
Ralf Baechle70342282013-01-22 12:59:30 +010035#define SIGBUS 10 /* BUS error (4.2 BSD). */
David Howells61730c52012-10-09 09:47:14 +010036#define SIGSEGV 11 /* Segmentation violation (ANSI). */
37#define SIGSYS 12
Ralf Baechle70342282013-01-22 12:59:30 +010038#define SIGPIPE 13 /* Broken pipe (POSIX). */
39#define SIGALRM 14 /* Alarm clock (POSIX). */
40#define SIGTERM 15 /* Termination (ANSI). */
David Howells61730c52012-10-09 09:47:14 +010041#define SIGUSR1 16 /* User-defined signal 1 (POSIX). */
42#define SIGUSR2 17 /* User-defined signal 2 (POSIX). */
43#define SIGCHLD 18 /* Child status has changed (POSIX). */
Ralf Baechle70342282013-01-22 12:59:30 +010044#define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
David Howells61730c52012-10-09 09:47:14 +010045#define SIGPWR 19 /* Power failure restart (System V). */
46#define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */
47#define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */
Ralf Baechle70342282013-01-22 12:59:30 +010048#define SIGIO 22 /* I/O now possible (4.2 BSD). */
49#define SIGPOLL SIGIO /* Pollable event occurred (System V). */
David Howells61730c52012-10-09 09:47:14 +010050#define SIGSTOP 23 /* Stop, unblockable (POSIX). */
51#define SIGTSTP 24 /* Keyboard stop (POSIX). */
52#define SIGCONT 25 /* Continue (POSIX). */
53#define SIGTTIN 26 /* Background read from tty (POSIX). */
54#define SIGTTOU 27 /* Background write to tty (POSIX). */
55#define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */
56#define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */
57#define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */
Ralf Baechle70342282013-01-22 12:59:30 +010058#define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */
David Howells61730c52012-10-09 09:47:14 +010059
60/* These should not be considered constants from userland. */
61#define SIGRTMIN 32
62#define SIGRTMAX _NSIG
63
64/*
65 * SA_FLAGS values:
66 *
67 * SA_ONSTACK indicates that a registered stack_t will be used.
68 * SA_RESTART flag to get restarting signals (which were the default long ago)
69 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
70 * SA_RESETHAND clears the handler when the signal is delivered.
71 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
72 * SA_NODEFER prevents the current signal from being masked in the handler.
73 *
74 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
75 * Unix names RESETHAND and NODEFER respectively.
Ralf Baechle80fa8182013-03-25 13:43:14 +010076 *
77 * SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
78 * supported its use and no libc was using it, so the entire sa-restorer
79 * functionality was removed with lmo commit 39bffc12c3580ab for 2.5.48
80 * retaining only the SA_RESTORER definition as a reminder to avoid
81 * accidental reuse of the mask bit.
David Howells61730c52012-10-09 09:47:14 +010082 */
83#define SA_ONSTACK 0x08000000
84#define SA_RESETHAND 0x80000000
85#define SA_RESTART 0x10000000
86#define SA_SIGINFO 0x00000008
87#define SA_NODEFER 0x40000000
88#define SA_NOCLDWAIT 0x00010000
89#define SA_NOCLDSTOP 0x00000001
90
91#define SA_NOMASK SA_NODEFER
92#define SA_ONESHOT SA_RESETHAND
93
David Howells61730c52012-10-09 09:47:14 +010094#define MINSIGSTKSZ 2048
95#define SIGSTKSZ 8192
96
97
98#define SIG_BLOCK 1 /* for blocking signals */
99#define SIG_UNBLOCK 2 /* for unblocking signals */
100#define SIG_SETMASK 3 /* for setting the signal mask */
101
102#include <asm-generic/signal-defs.h>
103
Al Viro574c4862012-11-25 22:24:19 -0500104#ifndef __KERNEL__
David Howells61730c52012-10-09 09:47:14 +0100105struct sigaction {
106 unsigned int sa_flags;
107 __sighandler_t sa_handler;
108 sigset_t sa_mask;
109};
Al Viro574c4862012-11-25 22:24:19 -0500110#endif
David Howells61730c52012-10-09 09:47:14 +0100111
David Howells61730c52012-10-09 09:47:14 +0100112/* IRIX compatible stack_t */
113typedef struct sigaltstack {
114 void __user *ss_sp;
115 size_t ss_size;
116 int ss_flags;
117} stack_t;
118
119
120#endif /* _UAPI_ASM_SIGNAL_H */