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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
#ifndef _ASMx8664_SIGNAL_H
#define _ASMx8664_SIGNAL_H
#ifndef __ASSEMBLY__
#include <linux/types.h>
#include <linux/linkage.h>
#include <linux/time.h>
/* Avoid too many header ordering problems. */
struct siginfo;
#ifdef __KERNEL__
/* Most things should be clean enough to redefine this at will, if care
is taken to make libc match. */
#define _NSIG 64
#define _NSIG_BPW 64
#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
typedef unsigned long old_sigset_t; /* at least 32 bits */
typedef struct {
unsigned long sig[_NSIG_WORDS];
} sigset_t;
struct pt_regs;
asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
#else
/* Here we must cater to libcs that poke about in kernel headers. */
#define NSIG 32
typedef unsigned long sigset_t;
#endif /* __KERNEL__ */
#endif
#define SIGHUP 1
#define SIGINT 2
#define SIGQUIT 3
#define SIGILL 4
#define SIGTRAP 5
#define SIGABRT 6
#define SIGIOT 6
#define SIGBUS 7
#define SIGFPE 8
#define SIGKILL 9
#define SIGUSR1 10
#define SIGSEGV 11
#define SIGUSR2 12
#define SIGPIPE 13
#define SIGALRM 14
#define SIGTERM 15
#define SIGSTKFLT 16
#define SIGCHLD 17
#define SIGCONT 18
#define SIGSTOP 19
#define SIGTSTP 20
#define SIGTTIN 21
#define SIGTTOU 22
#define SIGURG 23
#define SIGXCPU 24
#define SIGXFSZ 25
#define SIGVTALRM 26
#define SIGPROF 27
#define SIGWINCH 28
#define SIGIO 29
#define SIGPOLL SIGIO
/*
#define SIGLOST 29
*/
#define SIGPWR 30
#define SIGSYS 31
#define SIGUNUSED 31
/* 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_INTERRUPT is a no-op, but left due to historical reasons. Use the
* 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_NOCLDSTOP 0x00000001
#define SA_NOCLDWAIT 0x00000002
#define SA_SIGINFO 0x00000004
#define SA_ONSTACK 0x08000000
#define SA_RESTART 0x10000000
#define SA_NODEFER 0x40000000
#define SA_RESETHAND 0x80000000
#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
#define SA_RESTORER 0x04000000
/*
* sigaltstack controls
*/
#define SS_ONSTACK 1
#define SS_DISABLE 2
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
#ifndef __ASSEMBLY__
/* Type of a signal handler. */
typedef void __signalfn_t(int);
typedef __signalfn_t __user *__sighandler_t;
typedef void __restorefn_t(void);
typedef __restorefn_t __user *__sigrestore_t;
#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 {
__sighandler_t sa_handler;
unsigned long sa_flags;
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
struct k_sigaction {
struct sigaction sa;
};
typedef struct sigaltstack {
void __user *ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;
#ifdef __KERNEL__
#include <asm/sigcontext.h>
#undef __HAVE_ARCH_SIG_BITOPS
#if 0
extern __inline__ void sigaddset(sigset_t *set, int _sig)
{
__asm__("btsq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
}
extern __inline__ void sigdelset(sigset_t *set, int _sig)
{
__asm__("btrq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
}
extern __inline__ int __const_sigismember(sigset_t *set, int _sig)
{
unsigned long sig = _sig - 1;
return 1 & (set->sig[sig / _NSIG_BPW] >> (sig & ~(_NSIG_BPW-1)));
}
extern __inline__ int __gen_sigismember(sigset_t *set, int _sig)
{
int ret;
__asm__("btq %2,%1\n\tsbbq %0,%0"
: "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
return ret;
}
#define sigismember(set,sig) \
(__builtin_constant_p(sig) ? \
__const_sigismember((set),(sig)) : \
__gen_sigismember((set),(sig)))
extern __inline__ int sigfindinword(unsigned long word)
{
__asm__("bsfq %1,%0" : "=r"(word) : "rm"(word) : "cc");
return word;
}
#endif
#endif
#define ptrace_signal_deliver(regs, cookie) do { } while (0)
#endif /* __KERNEL__ */
#endif
|
