1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 #ifndef _SIGNAL_H_
29 #define _SIGNAL_H_
30
31 #include <sys/cdefs.h>
32 #include <limits.h> /* For LONG_BIT */
33 #include <string.h> /* For memset() */
34 #include <sys/types.h>
35 #include <asm/signal.h>
36
37 #define __ARCH_SI_UID_T __kernel_uid32_t
38 #include <asm/siginfo.h>
39 #undef __ARCH_SI_UID_T
40
41 __BEGIN_DECLS
42
43 typedef int sig_atomic_t;
44
45 /* crepy NIG / _NSIG handling, just to be safe */
46 #ifndef NSIG
47 # define NSIG _NSIG
48 #endif
49 #ifndef _NSIG
50 # define _NSIG NSIG
51 #endif
52
53 extern const char * const sys_siglist[];
54 extern const char * const sys_signame[];
55
sigismember(sigset_t * set,int signum)56 static __inline__ int sigismember(sigset_t *set, int signum)
57 {
58 unsigned long *local_set = (unsigned long *)set;
59 signum--;
60 return (int)((local_set[signum/LONG_BIT] >> (signum%LONG_BIT)) & 1);
61 }
62
63
sigaddset(sigset_t * set,int signum)64 static __inline__ int sigaddset(sigset_t *set, int signum)
65 {
66 unsigned long *local_set = (unsigned long *)set;
67 signum--;
68 local_set[signum/LONG_BIT] |= 1UL << (signum%LONG_BIT);
69 return 0;
70 }
71
72
sigdelset(sigset_t * set,int signum)73 static __inline__ int sigdelset(sigset_t *set, int signum)
74 {
75 unsigned long *local_set = (unsigned long *)set;
76 signum--;
77 local_set[signum/LONG_BIT] &= ~(1UL << (signum%LONG_BIT));
78 return 0;
79 }
80
81
sigemptyset(sigset_t * set)82 static __inline__ int sigemptyset(sigset_t *set)
83 {
84 memset(set, 0, sizeof *set);
85 return 0;
86 }
87
sigfillset(sigset_t * set)88 static __inline__ int sigfillset(sigset_t *set)
89 {
90 memset(set, ~0, sizeof *set);
91 return 0;
92 }
93
94
95 /* compatibility types */
96 typedef void (*sig_t)(int);
97 typedef sig_t sighandler_t;
98
99 /* differentiater between sysv and bsd behaviour 8*/
100 extern __sighandler_t sysv_signal(int, __sighandler_t);
101 extern __sighandler_t bsd_signal(int, __sighandler_t);
102
103 /* the default is bsd */
signal(int s,__sighandler_t f)104 static __inline__ __sighandler_t signal(int s, __sighandler_t f)
105 {
106 return bsd_signal(s,f);
107 }
108
109 /* the syscall itself */
110 extern __sighandler_t __signal(int, __sighandler_t, int);
111
112 extern int sigprocmask(int, const sigset_t *, sigset_t *);
113 extern int sigaction(int, const struct sigaction *, struct sigaction *);
114
115 extern int sigpending(sigset_t *);
116 extern int sigsuspend(const sigset_t *);
117 extern int sigwait(const sigset_t *set, int *sig);
118 extern int siginterrupt(int sig, int flag);
119
120 extern int raise(int);
121 extern int kill(pid_t, int);
122 extern int killpg(int pgrp, int sig);
123 extern int sigaltstack(const stack_t *ss, stack_t *oss);
124
125
126 __END_DECLS
127
128 #endif /* _SIGNAL_H_ */
129