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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
|
/* Convert between signal names and numbers.
Copyright (C) 1990, 1992, 1993, 1995 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#include <sys/types.h> /* Some systems need this for <signal.h>. */
#include <signal.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* Some systems do not define NSIG in <signal.h>. */
#ifndef NSIG
#ifdef _NSIG
#define NSIG _NSIG
#else
#define NSIG 32
#endif
#endif
#if !__STDC__
#define const
#endif
#include "signame.h"
#ifndef HAVE_SYS_SIGLIST
/* There is too much variation in Sys V signal numbers and names, so
we must initialize them at runtime. */
static const char undoc[] = "unknown signal";
const char *sys_siglist[NSIG];
#else /* HAVE_SYS_SIGLIST. */
#ifndef SYS_SIGLIST_DECLARED
extern char *sys_siglist[];
#endif /* Not SYS_SIGLIST_DECLARED. */
#endif /* Not HAVE_SYS_SIGLIST. */
/* Table of abbreviations for signals. Note: A given number can
appear more than once with different abbreviations. */
typedef struct
{
int number;
const char *abbrev;
} num_abbrev;
static num_abbrev sig_table[NSIG*2];
/* Number of elements of sig_table used. */
static int sig_table_nelts = 0;
/* Enter signal number NUMBER into the tables with ABBREV and NAME. */
static void
init_sig (number, abbrev, name)
int number;
const char *abbrev;
const char *name;
{
#ifndef HAVE_SYS_SIGLIST
sys_siglist[number] = name;
#endif
sig_table[sig_table_nelts].number = number;
sig_table[sig_table_nelts++].abbrev = abbrev;
}
void
signame_init ()
{
#ifndef HAVE_SYS_SIGLIST
int i;
/* Initialize signal names. */
for (i = 0; i < NSIG; i++)
sys_siglist[i] = undoc;
#endif /* !HAVE_SYS_SIGLIST */
/* Initialize signal names. */
#if defined (SIGHUP)
init_sig (SIGHUP, "HUP", "Hangup");
#endif
#if defined (SIGINT)
init_sig (SIGINT, "INT", "Interrupt");
#endif
#if defined (SIGQUIT)
init_sig (SIGQUIT, "QUIT", "Quit");
#endif
#if defined (SIGILL)
init_sig (SIGILL, "ILL", "Illegal Instruction");
#endif
#if defined (SIGTRAP)
init_sig (SIGTRAP, "TRAP", "Trace/breakpoint trap");
#endif
/* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't. */
#if defined (SIGABRT)
init_sig (SIGABRT, "ABRT", "Aborted");
#endif
#if defined (SIGIOT)
init_sig (SIGIOT, "IOT", "IOT trap");
#endif
#if defined (SIGEMT)
init_sig (SIGEMT, "EMT", "EMT trap");
#endif
#if defined (SIGFPE)
init_sig (SIGFPE, "FPE", "Floating point exception");
#endif
#if defined (SIGKILL)
init_sig (SIGKILL, "KILL", "Killed");
#endif
#if defined (SIGBUS)
init_sig (SIGBUS, "BUS", "Bus error");
#endif
#if defined (SIGSEGV)
init_sig (SIGSEGV, "SEGV", "Segmentation fault");
#endif
#if defined (SIGSYS)
init_sig (SIGSYS, "SYS", "Bad system call");
#endif
#if defined (SIGPIPE)
init_sig (SIGPIPE, "PIPE", "Broken pipe");
#endif
#if defined (SIGALRM)
init_sig (SIGALRM, "ALRM", "Alarm clock");
#endif
#if defined (SIGTERM)
init_sig (SIGTERM, "TERM", "Terminated");
#endif
#if defined (SIGUSR1)
init_sig (SIGUSR1, "USR1", "User defined signal 1");
#endif
#if defined (SIGUSR2)
init_sig (SIGUSR2, "USR2", "User defined signal 2");
#endif
/* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
is what is in POSIX.1. */
#if defined (SIGCHLD)
init_sig (SIGCHLD, "CHLD", "Child exited");
#endif
#if defined (SIGCLD)
init_sig (SIGCLD, "CLD", "Child exited");
#endif
#if defined (SIGPWR)
init_sig (SIGPWR, "PWR", "Power failure");
#endif
#if defined (SIGTSTP)
init_sig (SIGTSTP, "TSTP", "Stopped");
#endif
#if defined (SIGTTIN)
init_sig (SIGTTIN, "TTIN", "Stopped (tty input)");
#endif
#if defined (SIGTTOU)
init_sig (SIGTTOU, "TTOU", "Stopped (tty output)");
#endif
#if defined (SIGSTOP)
init_sig (SIGSTOP, "STOP", "Stopped (signal)");
#endif
#if defined (SIGXCPU)
init_sig (SIGXCPU, "XCPU", "CPU time limit exceeded");
#endif
#if defined (SIGXFSZ)
init_sig (SIGXFSZ, "XFSZ", "File size limit exceeded");
#endif
#if defined (SIGVTALRM)
init_sig (SIGVTALRM, "VTALRM", "Virtual timer expired");
#endif
#if defined (SIGPROF)
init_sig (SIGPROF, "PROF", "Profiling timer expired");
#endif
#if defined (SIGWINCH)
/* "Window size changed" might be more accurate, but even if that
is all that it means now, perhaps in the future it will be
extended to cover other kinds of window changes. */
init_sig (SIGWINCH, "WINCH", "Window changed");
#endif
#if defined (SIGCONT)
init_sig (SIGCONT, "CONT", "Continued");
#endif
#if defined (SIGURG)
init_sig (SIGURG, "URG", "Urgent I/O condition");
#endif
#if defined (SIGIO)
/* "I/O pending" has also been suggested. A disadvantage is
that signal only happens when the process has
asked for it, not everytime I/O is pending. Another disadvantage
is the confusion from giving it a different name than under Unix. */
init_sig (SIGIO, "IO", "I/O possible");
#endif
#if defined (SIGWIND)
init_sig (SIGWIND, "WIND", "SIGWIND");
#endif
#if defined (SIGPHONE)
init_sig (SIGPHONE, "PHONE", "SIGPHONE");
#endif
#if defined (SIGPOLL)
init_sig (SIGPOLL, "POLL", "I/O possible");
#endif
#if defined (SIGLOST)
init_sig (SIGLOST, "LOST", "Resource lost");
#endif
#if defined (SIGDANGER)
init_sig (SIGDANGER, "DANGER", "Danger signal");
#endif
}
/* Return the abbreviation for signal NUMBER. */
char *
sig_abbrev (number)
int number;
{
int i;
if (sig_table_nelts == 0)
signame_init ();
for (i = 0; i < sig_table_nelts; i++)
if (sig_table[i].number == number)
return (char *)sig_table[i].abbrev;
return NULL;
}
/* Return the signal number for an ABBREV, or -1 if there is no
signal by that name. */
int
sig_number (abbrev)
const char *abbrev;
{
int i;
if (sig_table_nelts == 0)
signame_init ();
/* Skip over "SIG" if present. */
if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G')
abbrev += 3;
for (i = 0; i < sig_table_nelts; i++)
if (abbrev[0] == sig_table[i].abbrev[0]
&& strcmp (abbrev, sig_table[i].abbrev) == 0)
return sig_table[i].number;
return -1;
}
#ifndef HAVE_PSIGNAL
/* Print to standard error the name of SIGNAL, preceded by MESSAGE and
a colon, and followed by a newline. */
void
psignal (signal, message)
int signal;
const char *message;
{
if (signal <= 0 || signal >= NSIG)
fprintf (stderr, "%s: unknown signal", message);
else
fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
}
#endif
#ifndef HAVE_STRSIGNAL
/* Return the string associated with the signal number. */
char *
strsignal (signal)
int signal;
{
static char buf[] = "Signal 12345678901234567890";
if (signal > 0 || signal < NSIG)
return (char *) sys_siglist[signal];
sprintf (buf, "Signal %d", signal);
return buf;
}
#endif
|
