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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_SIGNAL_H
2#define _ASM_SIGNAL_H
3
4#include <linux/types.h>
5
6/* Avoid too many header ordering problems. */
7struct siginfo;
8
9#ifdef __KERNEL__
10/* Most things should be clean enough to redefine this at will, if care
11 is taken to make libc match. */
12
13#define _NSIG 64
14#define _NSIG_BPW 32
15#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
16
17typedef unsigned long old_sigset_t; /* at least 32 bits */
18
19typedef struct {
20 unsigned long sig[_NSIG_WORDS];
21} sigset_t;
22
23#else
24/* Here we must cater to libcs that poke about in kernel headers. */
25
26#define NSIG 32
27typedef unsigned long sigset_t;
28
29#endif /* __KERNEL__ */
30
31#define SIGHUP 1
32#define SIGINT 2
33#define SIGQUIT 3
34#define SIGILL 4
35#define SIGTRAP 5
36#define SIGABRT 6
37#define SIGIOT 6
38#define SIGBUS 7
39#define SIGFPE 8
40#define SIGKILL 9
41#define SIGUSR1 10
42#define SIGSEGV 11
43#define SIGUSR2 12
44#define SIGPIPE 13
45#define SIGALRM 14
46#define SIGTERM 15
47#define SIGSTKFLT 16
48#define SIGCHLD 17
49#define SIGCONT 18
50#define SIGSTOP 19
51#define SIGTSTP 20
52#define SIGTTIN 21
53#define SIGTTOU 22
54#define SIGURG 23
55#define SIGXCPU 24
56#define SIGXFSZ 25
57#define SIGVTALRM 26
58#define SIGPROF 27
59#define SIGWINCH 28
60#define SIGIO 29
61#define SIGPOLL SIGIO
62/*
63#define SIGLOST 29
64*/
65#define SIGPWR 30
66#define SIGSYS 31
67#define SIGUNUSED 31
68
69/* These should not be considered constants from userland. */
70#define SIGRTMIN 32
71#define SIGRTMAX (_NSIG-1)
72
73/*
74 * SA_FLAGS values:
75 *
76 * SA_ONSTACK indicates that a registered stack_t will be used.
77 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
78 * SA_RESTART flag to get restarting signals (which were the default long ago)
79 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
80 * SA_RESETHAND clears the handler when the signal is delivered.
81 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
82 * SA_NODEFER prevents the current signal from being masked in the handler.
83 *
84 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
85 * Unix names RESETHAND and NODEFER respectively.
86 */
87#define SA_NOCLDSTOP 0x00000001
88#define SA_NOCLDWAIT 0x00000002 /* not supported yet */
89#define SA_SIGINFO 0x00000004
90#define SA_ONSTACK 0x08000000
91#define SA_RESTART 0x10000000
92#define SA_NODEFER 0x40000000
93#define SA_RESETHAND 0x80000000
94
95#define SA_NOMASK SA_NODEFER
96#define SA_ONESHOT SA_RESETHAND
97#define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
98
99#define SA_RESTORER 0x04000000
100
101/*
102 * sigaltstack controls
103 */
104#define SS_ONSTACK 1
105#define SS_DISABLE 2
106
107#define MINSIGSTKSZ 2048
108#define SIGSTKSZ 8192
109
Al Virob1ecb4c2005-05-04 05:40:12 +0100110#include <asm-generic/signal.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
112#ifdef __KERNEL__
113struct old_sigaction {
114 __sighandler_t sa_handler;
115 old_sigset_t sa_mask;
116 unsigned long sa_flags;
117 void (*sa_restorer)(void);
118};
119
120struct sigaction {
121 __sighandler_t sa_handler;
122 unsigned long sa_flags;
123 void (*sa_restorer)(void);
124 sigset_t sa_mask; /* mask last for extensibility */
125};
126
127struct k_sigaction {
128 struct sigaction sa;
129};
130#else
131/* Here we must cater to libcs that poke about in kernel headers. */
132
133struct sigaction {
134 union {
135 __sighandler_t _sa_handler;
136 void (*_sa_sigaction)(int, struct siginfo *, void *);
137 } _u;
138 sigset_t sa_mask;
139 unsigned long sa_flags;
140 void (*sa_restorer)(void);
141};
142
143#define sa_handler _u._sa_handler
144#define sa_sigaction _u._sa_sigaction
145
146#endif /* __KERNEL__ */
147
148typedef struct sigaltstack {
149 void *ss_sp;
150 int ss_flags;
151 size_t ss_size;
152} stack_t;
153
154extern int do_signal(struct pt_regs *regs, sigset_t *oldset);
155#define ptrace_signal_deliver(regs, cookie) do { } while (0)
156
157#ifdef __KERNEL__
158
159#include <asm/sigcontext.h>
160#undef __HAVE_ARCH_SIG_BITOPS
161
162#endif /* __KERNEL__ */
163
164#endif /* _ASM_SIGNAL_H */