1 /* Convert between signal names and numbers.
2 Copyright (C) 1990, 1992, 1993, 1995, 1996 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; see the file COPYING. If not, write to
16 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
23 #include <sys/types.h> /* Some systems need this for <signal.h>. */
30 /* Some systems declare `sys_siglist in <unistd.h>; if
31 configure defined SYS_SIGLIST_DECLARED, it may expect
32 to find the declaration there. */
38 /* Some systems do not define NSIG in <signal.h>. */
53 #ifndef HAVE_SYS_SIGLIST
54 /* There is too much variation in Sys V signal numbers and names, so
55 we must initialize them at runtime. */
57 static const char undoc
[] = "unknown signal";
59 const char *sys_siglist
[NSIG
];
61 #else /* HAVE_SYS_SIGLIST. */
63 #ifndef SYS_SIGLIST_DECLARED
64 extern char *sys_siglist
[];
65 #endif /* Not SYS_SIGLIST_DECLARED. */
67 #endif /* Not HAVE_SYS_SIGLIST. */
69 /* Table of abbreviations for signals. Note: A given number can
70 appear more than once with different abbreviations. */
76 static num_abbrev sig_table
[NSIG
*2];
77 /* Number of elements of sig_table used. */
78 static int sig_table_nelts
= 0;
80 /* Enter signal number NUMBER into the tables with ABBREV and NAME. */
83 init_sig (number
, abbrev
, name
)
88 #ifndef HAVE_SYS_SIGLIST
89 sys_siglist
[number
] = name
;
91 sig_table
[sig_table_nelts
].number
= number
;
92 sig_table
[sig_table_nelts
++].abbrev
= abbrev
;
98 #ifndef HAVE_SYS_SIGLIST
100 /* Initialize signal names. */
101 for (i
= 0; i
< NSIG
; i
++)
102 sys_siglist
[i
] = undoc
;
103 #endif /* !HAVE_SYS_SIGLIST */
105 /* Initialize signal names. */
107 init_sig (SIGHUP
, "HUP", "Hangup");
110 init_sig (SIGINT
, "INT", "Interrupt");
112 #if defined (SIGQUIT)
113 init_sig (SIGQUIT
, "QUIT", "Quit");
116 init_sig (SIGILL
, "ILL", "Illegal Instruction");
118 #if defined (SIGTRAP)
119 init_sig (SIGTRAP
, "TRAP", "Trace/breakpoint trap");
121 /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
122 SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't. */
123 #if defined (SIGABRT)
124 init_sig (SIGABRT
, "ABRT", "Aborted");
127 init_sig (SIGIOT
, "IOT", "IOT trap");
130 init_sig (SIGEMT
, "EMT", "EMT trap");
133 init_sig (SIGFPE
, "FPE", "Floating point exception");
135 #if defined (SIGKILL)
136 init_sig (SIGKILL
, "KILL", "Killed");
139 init_sig (SIGBUS
, "BUS", "Bus error");
141 #if defined (SIGSEGV)
142 init_sig (SIGSEGV
, "SEGV", "Segmentation fault");
145 init_sig (SIGSYS
, "SYS", "Bad system call");
147 #if defined (SIGPIPE)
148 init_sig (SIGPIPE
, "PIPE", "Broken pipe");
150 #if defined (SIGALRM)
151 init_sig (SIGALRM
, "ALRM", "Alarm clock");
153 #if defined (SIGTERM)
154 init_sig (SIGTERM
, "TERM", "Terminated");
156 #if defined (SIGUSR1)
157 init_sig (SIGUSR1
, "USR1", "User defined signal 1");
159 #if defined (SIGUSR2)
160 init_sig (SIGUSR2
, "USR2", "User defined signal 2");
162 /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
163 is what is in POSIX.1. */
164 #if defined (SIGCHLD)
165 init_sig (SIGCHLD
, "CHLD", "Child exited");
168 init_sig (SIGCLD
, "CLD", "Child exited");
171 init_sig (SIGPWR
, "PWR", "Power failure");
173 #if defined (SIGTSTP)
174 init_sig (SIGTSTP
, "TSTP", "Stopped");
176 #if defined (SIGTTIN)
177 init_sig (SIGTTIN
, "TTIN", "Stopped (tty input)");
179 #if defined (SIGTTOU)
180 init_sig (SIGTTOU
, "TTOU", "Stopped (tty output)");
182 #if defined (SIGSTOP)
183 init_sig (SIGSTOP
, "STOP", "Stopped (signal)");
185 #if defined (SIGXCPU)
186 init_sig (SIGXCPU
, "XCPU", "CPU time limit exceeded");
188 #if defined (SIGXFSZ)
189 init_sig (SIGXFSZ
, "XFSZ", "File size limit exceeded");
191 #if defined (SIGVTALRM)
192 init_sig (SIGVTALRM
, "VTALRM", "Virtual timer expired");
194 #if defined (SIGPROF)
195 init_sig (SIGPROF
, "PROF", "Profiling timer expired");
197 #if defined (SIGWINCH)
198 /* "Window size changed" might be more accurate, but even if that
199 is all that it means now, perhaps in the future it will be
200 extended to cover other kinds of window changes. */
201 init_sig (SIGWINCH
, "WINCH", "Window changed");
203 #if defined (SIGCONT)
204 init_sig (SIGCONT
, "CONT", "Continued");
207 init_sig (SIGURG
, "URG", "Urgent I/O condition");
210 /* "I/O pending" has also been suggested. A disadvantage is
211 that signal only happens when the process has
212 asked for it, not everytime I/O is pending. Another disadvantage
213 is the confusion from giving it a different name than under Unix. */
214 init_sig (SIGIO
, "IO", "I/O possible");
216 #if defined (SIGWIND)
217 init_sig (SIGWIND
, "WIND", "SIGWIND");
219 #if defined (SIGPHONE)
220 init_sig (SIGPHONE
, "PHONE", "SIGPHONE");
222 #if defined (SIGPOLL)
223 init_sig (SIGPOLL
, "POLL", "I/O possible");
225 #if defined (SIGLOST)
226 init_sig (SIGLOST
, "LOST", "Resource lost");
228 #if defined (SIGDANGER)
229 init_sig (SIGDANGER
, "DANGER", "Danger signal");
231 #if defined (SIGINFO)
232 init_sig (SIGINFO
, "INFO", "Information request");
236 /* Return the abbreviation for signal NUMBER. */
244 if (sig_table_nelts
== 0)
247 for (i
= 0; i
< sig_table_nelts
; i
++)
248 if (sig_table
[i
].number
== number
)
249 return (char *)sig_table
[i
].abbrev
;
253 /* Return the signal number for an ABBREV, or -1 if there is no
254 signal by that name. */
262 if (sig_table_nelts
== 0)
265 /* Skip over "SIG" if present. */
266 if (abbrev
[0] == 'S' && abbrev
[1] == 'I' && abbrev
[2] == 'G')
269 for (i
= 0; i
< sig_table_nelts
; i
++)
270 if (abbrev
[0] == sig_table
[i
].abbrev
[0]
271 && strcmp (abbrev
, sig_table
[i
].abbrev
) == 0)
272 return sig_table
[i
].number
;
277 /* Print to standard error the name of SIGNAL, preceded by MESSAGE and
278 a colon, and followed by a newline. */
281 psignal (signal
, message
)
285 if (signal
<= 0 || signal
>= NSIG
)
286 fprintf (stderr
, "%s: unknown signal", message
);
288 fprintf (stderr
, "%s: %s\n", message
, sys_siglist
[signal
]);
292 #ifndef HAVE_STRSIGNAL
293 /* Return the string associated with the signal number. */
299 static char buf
[] = "Signal 12345678901234567890";
301 if (signal
> 0 || signal
< NSIG
)
302 return (char *) sys_siglist
[signal
];
304 sprintf (buf
, "Signal %d", signal
);