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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
* Copyright (C) 1999 Silicon Graphics, Inc.
*/
#ifndef _ASM_SIGNAL_H
#define _ASM_SIGNAL_H
#include <linux/types.h>
#define _NSIG 128
#define _NSIG_BPW (sizeof(unsigned long) * 8)
#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
typedef struct {
unsigned long sig[_NSIG_WORDS];
} sigset_t;
typedef unsigned long old_sigset_t; /* at least 32 bits */
#define SIGHUP 1 /* Hangup (POSIX). */
#define SIGINT 2 /* Interrupt (ANSI). */
#define SIGQUIT 3 /* Quit (POSIX). */
#define SIGILL 4 /* Illegal instruction (ANSI). */
#define SIGTRAP 5 /* Trace trap (POSIX). */
#define SIGIOT 6 /* IOT trap (4.2 BSD). */
#define SIGABRT SIGIOT /* Abort (ANSI). */
#define SIGEMT 7
#define SIGFPE 8 /* Floating-point exception (ANSI). */
#define SIGKILL 9 /* Kill, unblockable (POSIX). */
#define SIGBUS 10 /* BUS error (4.2 BSD). */
#define SIGSEGV 11 /* Segmentation violation (ANSI). */
#define SIGSYS 12
#define SIGPIPE 13 /* Broken pipe (POSIX). */
#define SIGALRM 14 /* Alarm clock (POSIX). */
#define SIGTERM 15 /* Termination (ANSI). */
#define SIGUSR1 16 /* User-defined signal 1 (POSIX). */
#define SIGUSR2 17 /* User-defined signal 2 (POSIX). */
#define SIGCHLD 18 /* Child status has changed (POSIX). */
#define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
#define SIGPWR 19 /* Power failure restart (System V). */
#define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */
#define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */
#define SIGIO 22 /* I/O now possible (4.2 BSD). */
#define SIGPOLL SIGIO /* Pollable event occurred (System V). */
#define SIGSTOP 23 /* Stop, unblockable (POSIX). */
#define SIGTSTP 24 /* Keyboard stop (POSIX). */
#define SIGCONT 25 /* Continue (POSIX). */
#define SIGTTIN 26 /* Background read from tty (POSIX). */
#define SIGTTOU 27 /* Background write to tty (POSIX). */
#define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */
#define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */
#define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */
#define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */
/* These should not be considered constants from userland. */
#define SIGRTMIN 32
#define SIGRTMAX _NSIG
/*
* SA_FLAGS values:
*
* SA_ONSTACK indicates that a registered stack_t will be used.
* SA_RESTART flag to get restarting signals (which were the default long ago)
* SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
* SA_RESETHAND clears the handler when the signal is delivered.
* SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
* SA_NODEFER prevents the current signal from being masked in the handler.
*
* SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
* Unix names RESETHAND and NODEFER respectively.
*/
#define SA_ONSTACK 0x08000000
#define SA_RESETHAND 0x80000000
#define SA_RESTART 0x10000000
#define SA_SIGINFO 0x00000008
#define SA_NODEFER 0x40000000
#define SA_NOCLDWAIT 0x00010000
#define SA_NOCLDSTOP 0x00000001
#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#define SA_RESTORER 0x04000000 /* Only for o32 */
/*
* sigaltstack controls
*/
#define SS_ONSTACK 1
#define SS_DISABLE 2
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
#ifdef __KERNEL__
#ifdef CONFIG_TRAD_SIGNALS
#define sig_uses_siginfo(ka) ((ka)->sa.sa_flags & SA_SIGINFO)
#else
#define sig_uses_siginfo(ka) (1)
#endif
#endif /* __KERNEL__ */
#define SIG_BLOCK 1 /* for blocking signals */
#define SIG_UNBLOCK 2 /* for unblocking signals */
#define SIG_SETMASK 3 /* for setting the signal mask */
#define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility:
set only the low 32 bit of the sigset. */
/* Type of a signal handler. */
typedef void __signalfn_t(int);
typedef __signalfn_t __user *__sighandler_t;
/* Fake signal functions */
#define SIG_DFL ((__sighandler_t)0) /* default signal handling */
#define SIG_IGN ((__sighandler_t)1) /* ignore signal */
#define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
struct sigaction {
unsigned int sa_flags;
__sighandler_t sa_handler;
sigset_t sa_mask;
};
struct k_sigaction {
struct sigaction sa;
#ifdef CONFIG_BINFMT_IRIX
void (*sa_restorer)(void);
#endif
};
/* IRIX compatible stack_t */
typedef struct sigaltstack {
void __user *ss_sp;
size_t ss_size;
int ss_flags;
} stack_t;
#ifdef __KERNEL__
#include <asm/sigcontext.h>
#include <asm/siginfo.h>
#define ptrace_signal_deliver(regs, cookie) do { } while (0)
struct pt_regs;
extern void do_signal(struct pt_regs *regs);
extern void do_signal32(struct pt_regs *regs);
extern int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
int signr, sigset_t *set);
extern int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
int signr, sigset_t *set, siginfo_t *info);
extern int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
int signr, sigset_t *set);
extern int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
int signr, sigset_t *set, siginfo_t *info);
extern int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs,
int signr, sigset_t *set, siginfo_t *info);
#endif /* __KERNEL__ */
#endif /* _ASM_SIGNAL_H */
|
