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1.1 root 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 unsigned int sigset_t;
97:
98: __BEGIN_DECLS
99: int sigaddset __P((sigset_t *, int));
100: int sigdelset __P((sigset_t *, int));
101: int sigemptyset __P((sigset_t *));
102: int sigfillset __P((sigset_t *));
103: int sigismember __P((const sigset_t *, int));
104: __END_DECLS
105:
106: #define sigemptyset(set) ( *(set) = 0 )
107: #define sigfillset(set) ( *(set) = ~(sigset_t)0, 0 )
108: #define sigaddset(set, signo) ( *(set) |= 1 << ((signo) - 1), 0)
109: #define sigdelset(set, signo) ( *(set) &= ~(1 << ((signo) - 1)), 0)
110: #define sigismember(set, signo) ( (*(set) & (1 << ((signo) - 1))) != 0)
111:
112: /*
113: * Signal vector "template" used in sigaction call.
114: */
115: struct sigaction {
116: void (*sa_handler)(); /* signal handler */
117: sigset_t sa_mask; /* signal mask to apply */
118: int sa_flags; /* see signal options below */
119: };
120: #ifndef _POSIX_SOURCE
121: #define SA_ONSTACK 0x0001 /* take signal on signal stack */
122: #define SA_RESTART 0x0002 /* do not restart system on signal return */
123: #endif
124: #define SA_NOCLDSTOP 0x0004 /* do not generate SIGCHLD on child stop */
125:
126: /*
127: * Flags for sigprocmask:
128: */
129: #define SIG_BLOCK 1 /* block specified signal set */
130: #define SIG_UNBLOCK 2 /* unblock specified signal set */
131: #define SIG_SETMASK 3 /* set specified signal set */
132:
133: #ifndef _POSIX_SOURCE
134: /*
135: * 4.3 compatibility:
136: * Signal vector "template" used in sigvec call.
137: */
138: struct sigvec {
139: void (*sv_handler)(); /* signal handler */
140: int sv_mask; /* signal mask to apply */
141: int sv_flags; /* see signal options below */
142: };
143: #define SV_ONSTACK SA_ONSTACK
144: #define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
145: #define sv_onstack sv_flags /* isn't compatibility wonderful! */
146:
147: /*
148: * Structure used in sigaltstack call.
149: */
150: struct sigaltstack {
151: char *ss_base; /* signal stack base */
152: int ss_len; /* signal stack length */
153: int ss_onstack; /* current status */
154: };
155:
156: /*
157: * Structure used in sigstack call.
158: */
159: struct sigstack {
160: char *ss_sp; /* signal stack pointer */
161: int ss_onstack; /* current status */
162: };
163:
164: /*
165: * Information pushed on stack when a signal is delivered.
166: * This is used by the kernel to restore state following
167: * execution of the signal handler. It is also made available
168: * to the handler to allow it to restore state properly if
169: * a non-standard exit is performed.
170: */
171: struct sigcontext {
172: int sc_onstack; /* sigstack state to restore */
173: int sc_mask; /* signal mask to restore */
174: int sc_sp; /* sp to restore */
175: int sc_fp; /* fp to restore */
176: int sc_ap; /* ap to restore */
177: int sc_pc; /* pc to restore */
178: int sc_ps; /* psl to restore */
179: };
180:
181: /*
182: * Macro for converting signal number to a mask suitable for
183: * sigblock().
184: */
185: #define sigmask(m) (1 << ((m)-1))
186:
187: #define BADSIG (void (*)())-1
188: #endif /* _POSIX_SOURCE */
189:
190: #define SIG_DFL (void (*)())0
191: #define SIG_IGN (void (*)())1
192:
193: #ifndef KERNEL
194: #include <sys/types.h>
195:
196: __BEGIN_DECLS
197: void (*signal __P((int, void (*) __P((int))))) __P((int));
198: int raise __P((int));
199: #ifndef _ANSI_SOURCE
200: int kill __P((pid_t, int));
201: int sigaction __P((int, const struct sigaction *, struct sigaction *));
202: int sigpending __P((sigset_t *));
203: int sigprocmask __P((int, const sigset_t *, sigset_t *));
204: int sigsuspend __P((const sigset_t *));
205: #endif /* !_ANSI_SOURCE */
206: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
207: int killpg __P((pid_t, int));
208: void psignal __P((unsigned, const char *));
209: int sigblock __P((int));
210: int siginterrupt __P((int, int));
211: int sigpause __P((int));
212: int sigreturn __P((struct sigcontext *));
213: int sigsetmask __P((int));
214: int sigstack __P((const struct sigstack *, struct sigstack *));
215: int sigvec __P((int, struct sigvec *, struct sigvec *));
216: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
217: __END_DECLS
218:
219: #endif /* !KERNEL */
220: #endif /* !_SIGNAL_H_ */
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