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
|
/*
* tc.sig.h: Signal handling
*
*/
/*-
* Copyright (c) 1980, 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _h_tc_sig
#define _h_tc_sig
#if (SYSVREL > 0) || defined(BSD4_4) || defined(_MINIX) || defined(DGUX) || defined(WINNT_NATIVE) || defined(__QNXNTO__)
# include <signal.h>
# ifndef SIGCHLD
# define SIGCHLD SIGCLD
# endif /* SIGCHLD */
#else /* SYSVREL == 0 */
# include <sys/signal.h>
#endif /* SYSVREL > 0 */
#if defined(SUNOS4) || defined(DGUX) || defined(hp800) || (SYSVREL > 3 && defined(VFORK))
# define SAVESIGVEC
#endif /* SUNOS4 || DGUX || hp800 || SVR4 & VFORK */
#if SYSVREL > 0
# ifdef BSDJOBS
/* here I assume that systems that have bsdjobs implement the
* the setpgrp call correctly. Otherwise defining this would
* work, but it would kill the world, because all the setpgrp
* code is the the part defined when BSDJOBS are defined
* NOTE: we don't want killpg(a, b) == kill(-getpgrp(a), b)
* cause process a might be already dead and getpgrp would fail
*/
# define killpg(a, b) kill(-(a), (b))
# else
/* this is the poor man's version of killpg()! Just kill the
* current process and don't worry about the rest. Someday
* I hope I get to fix that.
*/
# define killpg(a, b) kill((a), (b))
# endif /* BSDJOBS */
#endif /* SYSVREL > 0 */
#ifdef _MINIX
# include <signal.h>
# define killpg(a, b) kill((a), (b))
# ifdef _MINIX_VMD
# define signal(a, b) signal((a), (a) == SIGCHLD ? SIG_IGN : (b))
# endif /* _MINIX_VMD */
#endif /* _MINIX */
#ifdef _VMS_POSIX
# define killpg(a, b) kill(-(a), (b))
#endif /* atp _VMS_POSIX */
#ifdef aiws
# undef killpg
# define killpg(a, b) kill(-getpgrp(a), b)
#endif /* aiws */
#if !defined(NSIG) && defined(SIGMAX)
# define NSIG (SIGMAX+1)
#endif /* !NSIG && SIGMAX */
#if !defined(NSIG) && defined(_SIG_MAX)
# define NSIG (_SIG_MAX+1)
#endif /* !NSIG && _SIG_MAX */
#if !defined(NSIG) && defined(_NSIG)
# define NSIG _NSIG
#endif /* !NSIG && _NSIG */
#if !defined(NSIG)
#define NSIG (sizeof(sigset_t) * 8)
#endif /* !NSIG */
#if !defined(MAXSIG) && defined(NSIG)
# define MAXSIG NSIG
#endif /* !MAXSIG && NSIG */
/*
* We choose a define for the window signal if it exists..
*/
#ifdef SIGWINCH
# define SIG_WINDOW SIGWINCH
#else
# ifdef SIGWINDOW
# define SIG_WINDOW SIGWINDOW
# endif /* SIGWINDOW */
#endif /* SIGWINCH */
#ifdef SAVESIGVEC
# define NSIGSAVED 7
/*
* These are not inline for speed. gcc -traditional -O on the sparc ignores
* the fact that vfork() corrupts the registers. Calling a routine is not
* nice, since it can make the compiler put some things that we want saved
* into registers - christos
*/
# define savesigvec(sv, sm) \
do { \
sigset_t m__; \
\
sigaction(SIGINT, NULL, &(sv)[0]); \
sigaction(SIGQUIT, NULL, &(sv)[1]); \
sigaction(SIGTSTP, NULL, &(sv)[2]); \
sigaction(SIGTTIN, NULL, &(sv)[3]); \
sigaction(SIGTTOU, NULL, &(sv)[4]); \
sigaction(SIGTERM, NULL, &(sv)[5]); \
sigaction(SIGHUP, NULL, &(sv)[6]); \
sigemptyset(&m__); \
sigaddset(&m__, SIGINT); \
sigaddset(&m__, SIGQUIT); \
sigaddset(&m__, SIGTSTP); \
sigaddset(&m__, SIGTTIN); \
sigaddset(&m__, SIGTTOU); \
sigaddset(&m__, SIGTERM); \
sigaddset(&m__, SIGHUP); \
sigprocmask(SIG_BLOCK, &m__, &sm); \
} while (0)
# define restoresigvec(sv, sm) \
do { \
sigaction(SIGINT, &(sv)[0], NULL); \
sigaction(SIGQUIT, &(sv)[1], NULL); \
sigaction(SIGTSTP, &(sv)[2], NULL); \
sigaction(SIGTTIN, &(sv)[3], NULL); \
sigaction(SIGTTOU, &(sv)[4], NULL); \
sigaction(SIGTERM, &(sv)[5], NULL); \
sigaction(SIGHUP, &(sv)[6], NULL); \
sigprocmask(SIG_SETMASK, &sm, NULL); \
} while (0)
# endif /* SAVESIGVEC */
extern int alrmcatch_disabled;
extern int pchild_disabled;
extern int phup_disabled;
extern int pintr_disabled;
extern void sigset_interrupting(int, void (*) (int));
extern int handle_pending_signals(void);
extern void queue_alrmcatch(int);
extern void queue_pchild(int);
extern void queue_phup(int);
extern void queue_pintr(int);
extern void disabled_cleanup(void *);
extern void pintr_disabled_restore(void *);
extern void pintr_push_enable(int *);
#endif /* _h_tc_sig */
|
