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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1982, 1986, 1989, 1991, 1993
28: * The Regents of the University of California. All rights reserved.
29: * (c) UNIX System Laboratories, Inc.
30: * All or some portions of this file are derived from material licensed
31: * to the University of California by American Telephone and Telegraph
32: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
33: * the permission of UNIX System Laboratories, Inc.
34: *
35: * Redistribution and use in source and binary forms, with or without
36: * modification, are permitted provided that the following conditions
37: * are met:
38: * 1. Redistributions of source code must retain the above copyright
39: * notice, this list of conditions and the following disclaimer.
40: * 2. Redistributions in binary form must reproduce the above copyright
41: * notice, this list of conditions and the following disclaimer in the
42: * documentation and/or other materials provided with the distribution.
43: * 3. All advertising materials mentioning features or use of this software
44: * must display the following acknowledgement:
45: * This product includes software developed by the University of
46: * California, Berkeley and its contributors.
47: * 4. Neither the name of the University nor the names of its contributors
48: * may be used to endorse or promote products derived from this software
49: * without specific prior written permission.
50: *
51: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61: * SUCH DAMAGE.
62: *
63: * @(#)signal.h 8.4 (Berkeley) 5/4/95
64: */
65:
66: #ifndef _SYS_SIGNAL_H_
67: #define _SYS_SIGNAL_H_
68:
69: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
70: #define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
71: #endif
72:
73: #include <machine/signal.h> /* sigcontext; codes for SIGILL, SIGFPE */
74:
75: #define SIGHUP 1 /* hangup */
76: #define SIGINT 2 /* interrupt */
77: #define SIGQUIT 3 /* quit */
78: #define SIGILL 4 /* illegal instruction (not reset when caught) */
79: #if !defined(_POSIX_SOURCE)
80: #define SIGTRAP 5 /* trace trap (not reset when caught) */
81: #endif
82: #define SIGABRT 6 /* abort() */
83: #if !defined(_POSIX_SOURCE)
84: #define SIGIOT SIGABRT /* compatibility */
85: #define SIGEMT 7 /* EMT instruction */
86: #endif
87: #define SIGFPE 8 /* floating point exception */
88: #define SIGKILL 9 /* kill (cannot be caught or ignored) */
89: #if !defined(_POSIX_SOURCE)
90: #define SIGBUS 10 /* bus error */
91: #endif
92: #define SIGSEGV 11 /* segmentation violation */
93: #if !defined(_POSIX_SOURCE)
94: #define SIGSYS 12 /* bad argument to system call */
95: #endif
96: #define SIGPIPE 13 /* write on a pipe with no one to read it */
97: #define SIGALRM 14 /* alarm clock */
98: #define SIGTERM 15 /* software termination signal from kill */
99: #if !defined(_POSIX_SOURCE)
100: #define SIGURG 16 /* urgent condition on IO channel */
101: #endif
102: #define SIGSTOP 17 /* sendable stop signal not from tty */
103: #define SIGTSTP 18 /* stop signal from tty */
104: #define SIGCONT 19 /* continue a stopped process */
105: #define SIGCHLD 20 /* to parent on child stop or exit */
106: #define SIGTTIN 21 /* to readers pgrp upon background tty read */
107: #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
108: #if !defined(_POSIX_SOURCE)
109: #define SIGIO 23 /* input/output possible signal */
110: #define SIGXCPU 24 /* exceeded CPU time limit */
111: #define SIGXFSZ 25 /* exceeded file size limit */
112: #define SIGVTALRM 26 /* virtual time alarm */
113: #define SIGPROF 27 /* profiling time alarm */
114: #define SIGWINCH 28 /* window size changes */
115: #define SIGINFO 29 /* information request */
116: #endif
117: #define SIGUSR1 30 /* user defined signal 1 */
118: #define SIGUSR2 31 /* user defined signal 2 */
119:
120: #if defined(_ANSI_SOURCE) || defined(__cplusplus)
121: /*
122: * Language spec sez we must list exactly one parameter, even though we
123: * actually supply three. Ugh!
124: */
125: #define SIG_DFL (void (*)(int))0
126: #define SIG_IGN (void (*)(int))1
127: #define SIG_ERR (void (*)(int))-1
128: #else
129: #define SIG_DFL (void (*)())0
130: #define SIG_IGN (void (*)())1
131: #define SIG_ERR (void (*)())-1
132: #endif
133:
134: #ifndef _ANSI_SOURCE
135: typedef unsigned int sigset_t;
136:
137: /*
138: * Signal vector "template" used in sigaction call.
139: */
140: struct sigaction {
141: void (*sa_handler)(); /* signal handler */
142: sigset_t sa_mask; /* signal mask to apply */
143: int sa_flags; /* see signal options below */
144: };
145: #if !defined(_POSIX_SOURCE)
146: #define SA_ONSTACK 0x0001 /* take signal on signal stack */
147: #define SA_RESTART 0x0002 /* restart system on signal return */
148: #define SA_DISABLE 0x0004 /* disable taking signals on alternate stack */
149: #define SA_USERTRAMP 0x0100 /* do not bounce off kernel's sigtramp */
150: #endif
151: #define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
152:
153: /*
154: * Flags for sigprocmask:
155: */
156: #define SIG_BLOCK 1 /* block specified signal set */
157: #define SIG_UNBLOCK 2 /* unblock specified signal set */
158: #define SIG_SETMASK 3 /* set specified signal set */
159:
160: #if !defined(_POSIX_SOURCE)
161: #include <sys/cdefs.h>
162: typedef void (*sig_t) __P((int)); /* type of signal function */
163:
164: /*
165: * Structure used in sigaltstack call.
166: */
167: struct sigaltstack {
168: char *ss_sp; /* signal stack base */
169: int ss_size; /* signal stack length */
170: int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */
171: };
172: #define MINSIGSTKSZ 8192 /* minimum allowable stack */
173: #define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
174:
175: /*
176: * 4.3 compatibility:
177: * Signal vector "template" used in sigvec call.
178: */
179: struct sigvec {
180: void (*sv_handler)(); /* signal handler */
181: int sv_mask; /* signal mask to apply */
182: int sv_flags; /* see signal options below */
183: };
184:
185: #define SV_ONSTACK SA_ONSTACK
186: #define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
187: #define sv_onstack sv_flags /* isn't compatibility wonderful! */
188:
189: /*
190: * Structure used in sigstack call.
191: */
192: struct sigstack {
193: char *ss_sp; /* signal stack pointer */
194: int ss_onstack; /* current status */
195: };
196:
197: /*
198: * Macro for converting signal number to a mask suitable for
199: * sigblock().
200: */
201: #define sigmask(m) (1 << ((m)-1))
202:
203: #ifdef _KERNEL
204: /*
205: * signals delivered on a per-thread basis.
206: */
207: #define threadmask (sigmask(SIGILL)|sigmask(SIGTRAP)|\
208: sigmask(SIGIOT)|sigmask(SIGEMT)|\
209: sigmask(SIGFPE)|sigmask(SIGBUS)|\
210: sigmask(SIGSEGV)|sigmask(SIGSYS)|\
211: sigmask(SIGPIPE))
212: #endif /* _KERNEL */
213:
214: #define BADSIG SIG_ERR
215:
216: #endif /* !_POSIX_SOURCE */
217: #endif /* !_ANSI_SOURCE */
218:
219: /*
220: * For historical reasons; programs expect signal's return value to be
221: * defined by <sys/signal.h>.
222: */
223: __BEGIN_DECLS
224: void (*signal __P((int, void (*) __P((int))))) __P((int));
225: __END_DECLS
226: #endif /* !_SYS_SIGNAL_H_ */
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