1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
7 * Copyright (C) 1999 Silicon Graphics, Inc.
8 */
9 #ifndef _UAPI_ASM_SIGNAL_H
10 #define _UAPI_ASM_SIGNAL_H
11
12 #include <linux/types.h>
13
14 #define _NSIG 128
15 #define _NSIG_BPW (sizeof(unsigned long) * 8)
16 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
17
18 typedef struct {
19 unsigned long sig[_NSIG_WORDS];
20 } sigset_t;
21
22 typedef unsigned long old_sigset_t; /* at least 32 bits */
23
24 #define SIGHUP 1 /* Hangup (POSIX). */
25 #define SIGINT 2 /* Interrupt (ANSI). */
26 #define SIGQUIT 3 /* Quit (POSIX). */
27 #define SIGILL 4 /* Illegal instruction (ANSI). */
28 #define SIGTRAP 5 /* Trace trap (POSIX). */
29 #define SIGIOT 6 /* IOT trap (4.2 BSD). */
30 #define SIGABRT SIGIOT /* Abort (ANSI). */
31 #define SIGEMT 7
32 #define SIGFPE 8 /* Floating-point exception (ANSI). */
33 #define SIGKILL 9 /* Kill, unblockable (POSIX). */
34 #define SIGBUS 10 /* BUS error (4.2 BSD). */
35 #define SIGSEGV 11 /* Segmentation violation (ANSI). */
36 #define SIGSYS 12
37 #define SIGPIPE 13 /* Broken pipe (POSIX). */
38 #define SIGALRM 14 /* Alarm clock (POSIX). */
39 #define SIGTERM 15 /* Termination (ANSI). */
40 #define SIGUSR1 16 /* User-defined signal 1 (POSIX). */
41 #define SIGUSR2 17 /* User-defined signal 2 (POSIX). */
42 #define SIGCHLD 18 /* Child status has changed (POSIX). */
43 #define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
44 #define SIGPWR 19 /* Power failure restart (System V). */
45 #define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */
46 #define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */
47 #define SIGIO 22 /* I/O now possible (4.2 BSD). */
48 #define SIGPOLL SIGIO /* Pollable event occurred (System V). */
49 #define SIGSTOP 23 /* Stop, unblockable (POSIX). */
50 #define SIGTSTP 24 /* Keyboard stop (POSIX). */
51 #define SIGCONT 25 /* Continue (POSIX). */
52 #define SIGTTIN 26 /* Background read from tty (POSIX). */
53 #define SIGTTOU 27 /* Background write to tty (POSIX). */
54 #define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */
55 #define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */
56 #define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */
57 #define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */
58
59 /* These should not be considered constants from userland. */
60 #define SIGRTMIN 32
61 #define SIGRTMAX _NSIG
62
63 /*
64 * SA_FLAGS values:
65 *
66 * SA_ONSTACK indicates that a registered stack_t will be used.
67 * SA_RESTART flag to get restarting signals (which were the default long ago)
68 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
69 * SA_RESETHAND clears the handler when the signal is delivered.
70 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
71 * SA_NODEFER prevents the current signal from being masked in the handler.
72 *
73 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
74 * Unix names RESETHAND and NODEFER respectively.
75 *
76 * SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
77 * supported its use and no libc was using it, so the entire sa-restorer
78 * functionality was removed with lmo commit 39bffc12c3580ab for 2.5.48
79 * retaining only the SA_RESTORER definition as a reminder to avoid
80 * accidental reuse of the mask bit.
81 */
82 #define SA_ONSTACK 0x08000000
83 #define SA_RESETHAND 0x80000000
84 #define SA_RESTART 0x10000000
85 #define SA_SIGINFO 0x00000008
86 #define SA_NODEFER 0x40000000
87 #define SA_NOCLDWAIT 0x00010000
88 #define SA_NOCLDSTOP 0x00000001
89
90 #define SA_NOMASK SA_NODEFER
91 #define SA_ONESHOT SA_RESETHAND
92
93 #define MINSIGSTKSZ 2048
94 #define SIGSTKSZ 8192
95
96
97 #define SIG_BLOCK 1 /* for blocking signals */
98 #define SIG_UNBLOCK 2 /* for unblocking signals */
99 #define SIG_SETMASK 3 /* for setting the signal mask */
100
101 #include <asm-generic/signal-defs.h>
102
103 #ifndef __KERNEL__
104 struct sigaction {
105 unsigned int sa_flags;
106 __sighandler_t sa_handler;
107 sigset_t sa_mask;
108 };
109 #endif
110
111 /* IRIX compatible stack_t */
112 typedef struct sigaltstack {
113 void __user *ss_sp;
114 size_t ss_size;
115 int ss_flags;
116 } stack_t;
117
118
119 #endif /* _UAPI_ASM_SIGNAL_H */
120
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