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1 | /* |
2 | * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California. | |
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 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | * | |
33 | * @(#)signal.h 7.16 (Berkeley) 3/17/91 | |
34 | */ | |
35 | ||
36 | #ifndef _SIGNAL_H_ | |
37 | #define _SIGNAL_H_ | |
38 | ||
39 | #define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */ | |
40 | ||
41 | #ifndef _POSIX_SOURCE | |
42 | #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ | |
43 | #endif /* _POSIX_SOURCE */ | |
44 | ||
45 | #define SIGHUP 1 /* hangup */ | |
46 | #define SIGINT 2 /* interrupt */ | |
47 | #define SIGQUIT 3 /* quit */ | |
48 | #define SIGILL 4 /* illegal instruction (not reset when caught) */ | |
49 | #ifndef _POSIX_SOURCE | |
50 | #define SIGTRAP 5 /* trace trap (not reset when caught) */ | |
51 | #endif | |
52 | #define SIGABRT 6 /* abort() */ | |
53 | #ifndef _POSIX_SOURCE | |
54 | #define SIGIOT SIGABRT /* compatibility */ | |
55 | #define SIGEMT 7 /* EMT instruction */ | |
56 | #endif | |
57 | #define SIGFPE 8 /* floating point exception */ | |
58 | #define SIGKILL 9 /* kill (cannot be caught or ignored) */ | |
59 | #ifndef _POSIX_SOURCE | |
60 | #define SIGBUS 10 /* bus error */ | |
61 | #endif | |
62 | #define SIGSEGV 11 /* segmentation violation */ | |
63 | #ifndef _POSIX_SOURCE | |
64 | #define SIGSYS 12 /* bad argument to system call */ | |
65 | #endif | |
66 | #define SIGPIPE 13 /* write on a pipe with no one to read it */ | |
67 | #define SIGALRM 14 /* alarm clock */ | |
68 | #define SIGTERM 15 /* software termination signal from kill */ | |
69 | #ifndef _POSIX_SOURCE | |
70 | #define SIGURG 16 /* urgent condition on IO channel */ | |
71 | #endif | |
72 | #define SIGSTOP 17 /* sendable stop signal not from tty */ | |
73 | #define SIGTSTP 18 /* stop signal from tty */ | |
74 | #define SIGCONT 19 /* continue a stopped process */ | |
75 | #define SIGCHLD 20 /* to parent on child stop or exit */ | |
76 | #define SIGTTIN 21 /* to readers pgrp upon background tty read */ | |
77 | #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */ | |
78 | #ifndef _POSIX_SOURCE | |
79 | #define SIGIO 23 /* input/output possible signal */ | |
80 | #define SIGXCPU 24 /* exceeded CPU time limit */ | |
81 | #define SIGXFSZ 25 /* exceeded file size limit */ | |
82 | #define SIGVTALRM 26 /* virtual time alarm */ | |
83 | #define SIGPROF 27 /* profiling time alarm */ | |
84 | #define SIGWINCH 28 /* window size changes */ | |
85 | #define SIGINFO 29 /* information request */ | |
86 | #endif | |
87 | #define SIGUSR1 30 /* user defined signal 1 */ | |
88 | #define SIGUSR2 31 /* user defined signal 2 */ | |
89 | ||
90 | #include <sys/cdefs.h> | |
91 | ||
92 | #ifndef _POSIX_SOURCE | |
93 | typedef void (*sig_t) __P((int)); | |
94 | #endif | |
95 | ||
96 | typedef void (*__sighandler_t) __P((int)); | |
97 | typedef unsigned int sigset_t; | |
98 | ||
99 | __BEGIN_DECLS | |
100 | int sigaddset __P((sigset_t *, int)); | |
101 | int sigdelset __P((sigset_t *, int)); | |
102 | int sigemptyset __P((sigset_t *)); | |
103 | int sigfillset __P((sigset_t *)); | |
104 | int sigismember __P((const sigset_t *, int)); | |
105 | __END_DECLS | |
106 | ||
107 | #define sigemptyset(set) ( *(set) = 0 ) | |
108 | #define sigfillset(set) ( *(set) = ~(sigset_t)0, 0 ) | |
109 | #define sigaddset(set, signo) ( *(set) |= 1 << ((signo) - 1), 0) | |
110 | #define sigdelset(set, signo) ( *(set) &= ~(1 << ((signo) - 1)), 0) | |
111 | #define sigismember(set, signo) ( (*(set) & (1 << ((signo) - 1))) != 0) | |
112 | ||
113 | /* | |
114 | * Signal vector "template" used in sigaction call. | |
115 | */ | |
116 | struct sigaction { | |
117 | __sighandler_t sa_handler; /* signal handler */ | |
118 | sigset_t sa_mask; /* signal mask to apply */ | |
119 | int sa_flags; /* see signal options below */ | |
120 | }; | |
121 | #ifndef _POSIX_SOURCE | |
122 | #define SA_ONSTACK 0x0001 /* take signal on signal stack */ | |
123 | #define SA_RESTART 0x0002 /* do not restart system on signal return */ | |
124 | #endif | |
125 | #define SA_NOCLDSTOP 0x0004 /* do not generate SIGCHLD on child stop */ | |
126 | ||
127 | /* | |
128 | * Flags for sigprocmask: | |
129 | */ | |
130 | #define SIG_BLOCK 1 /* block specified signal set */ | |
131 | #define SIG_UNBLOCK 2 /* unblock specified signal set */ | |
132 | #define SIG_SETMASK 3 /* set specified signal set */ | |
133 | ||
134 | #ifndef _POSIX_SOURCE | |
135 | /* | |
136 | * 4.3 compatibility: | |
137 | * Signal vector "template" used in sigvec call. | |
138 | */ | |
139 | struct sigvec { | |
140 | void (*sv_handler)(); /* signal handler */ | |
141 | int sv_mask; /* signal mask to apply */ | |
142 | int sv_flags; /* see signal options below */ | |
143 | }; | |
144 | #define SV_ONSTACK SA_ONSTACK | |
145 | #define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */ | |
146 | #define sv_onstack sv_flags /* isn't compatibility wonderful! */ | |
147 | ||
148 | /* | |
149 | * Structure used in sigaltstack call. | |
150 | */ | |
151 | struct sigaltstack { | |
152 | char *ss_base; /* signal stack base */ | |
153 | int ss_len; /* signal stack length */ | |
154 | int ss_onstack; /* current status */ | |
155 | }; | |
156 | ||
157 | /* | |
158 | * Structure used in sigstack call. | |
159 | */ | |
160 | struct sigstack { | |
161 | char *ss_sp; /* signal stack pointer */ | |
162 | int ss_onstack; /* current status */ | |
163 | }; | |
164 | ||
165 | /* | |
166 | * Information pushed on stack when a signal is delivered. | |
167 | * This is used by the kernel to restore state following | |
168 | * execution of the signal handler. It is also made available | |
169 | * to the handler to allow it to restore state properly if | |
170 | * a non-standard exit is performed. | |
171 | */ | |
172 | struct sigcontext { | |
173 | int sc_onstack; /* sigstack state to restore */ | |
174 | int sc_mask; /* signal mask to restore */ | |
175 | int sc_sp; /* sp to restore */ | |
176 | int sc_fp; /* fp to restore */ | |
177 | int sc_ap; /* ap to restore */ | |
178 | int sc_pc; /* pc to restore */ | |
179 | int sc_ps; /* psl to restore */ | |
180 | }; | |
181 | ||
182 | /* | |
183 | * Macro for converting signal number to a mask suitable for | |
184 | * sigblock(). | |
185 | */ | |
186 | #define sigmask(m) (1 << ((m)-1)) | |
187 | ||
188 | #define BADSIG ((__sighandler_t) -1) | |
189 | #endif /* _POSIX_SOURCE */ | |
190 | ||
191 | #define SIG_DFL ((__sighandler_t) 0) | |
192 | #define SIG_IGN ((__sighandler_t) 1) | |
193 | ||
194 | #ifndef KERNEL | |
195 | #include <sys/types.h> | |
196 | ||
197 | __BEGIN_DECLS | |
198 | /*void (*signal __P((int, void (*) __P((int))))) __P((int));*/ | |
199 | __sighandler_t signal __P((int, __sighandler_t)); | |
200 | int raise __P((int)); | |
201 | #ifndef _ANSI_SOURCE | |
202 | int kill __P((pid_t, int)); | |
203 | int sigaction __P((int, const struct sigaction *, struct sigaction *)); | |
204 | int sigpending __P((sigset_t *)); | |
205 | int sigprocmask __P((int, const sigset_t *, sigset_t *)); | |
206 | int sigsuspend __P((const sigset_t *)); | |
207 | #endif /* !_ANSI_SOURCE */ | |
208 | #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) | |
209 | int killpg __P((pid_t, int)); | |
210 | void psignal __P((unsigned, const char *)); | |
211 | int sigblock __P((int)); | |
212 | int siginterrupt __P((int, int)); | |
213 | int sigpause __P((int)); | |
214 | int sigreturn __P((struct sigcontext *)); | |
215 | int sigsetmask __P((int)); | |
216 | int sigstack __P((const struct sigstack *, struct sigstack *)); | |
217 | int sigvec __P((int, struct sigvec *, struct sigvec *)); | |
218 | #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ | |
219 | __END_DECLS | |
220 | ||
221 | #endif /* !KERNEL */ | |
222 | #endif /* !_SIGNAL_H_ */ |