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dd3b648e RP |
1 | /* Convert between signal names and numbers. |
2 | Copyright (C) 1990 Free Software Foundation, Inc. | |
3 | ||
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 1, or (at your option) | |
7 | any later version. | |
8 | ||
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. | |
13 | ||
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. */ | |
17 | ||
18 | #include <stdio.h> | |
19 | #include <signal.h> | |
20 | #include "signame.h" | |
21 | ||
22 | #ifdef __STDC__ | |
23 | #define CONST const | |
24 | #else | |
25 | #define CONST | |
26 | #endif | |
27 | ||
28 | #ifdef SYS_SIGLIST_MISSING | |
29 | /* There is too much variation in Sys V signal numbers and names, so | |
30 | we must initialize them at runtime. */ | |
31 | ||
32 | static CONST char undoc[] = "unknown signal"; | |
33 | ||
34 | CONST char *sys_siglist[NSIG]; | |
35 | #endif /* SYS_SIGLIST_MISSING */ | |
36 | ||
37 | /* Table of abbreviations for signals. Note: A given number can | |
38 | appear more than once with different abbreviations. */ | |
39 | typedef struct | |
40 | { | |
41 | int number; | |
42 | CONST char *abbrev; | |
43 | } num_abbrev; | |
44 | static num_abbrev sig_table[NSIG*2]; | |
45 | /* Number of elements of sig_table used. */ | |
46 | static int sig_table_nelts = 0; | |
47 | ||
48 | /* Enter signal number NUMBER into the tables with ABBREV and NAME. */ | |
49 | static void | |
50 | init_sig (number, abbrev, name) | |
51 | int number; | |
52 | CONST char *abbrev; | |
53 | CONST char *name; | |
54 | { | |
55 | #ifdef SYS_SIGLIST_MISSING | |
56 | sys_siglist[number] = name; | |
57 | #endif | |
58 | sig_table[sig_table_nelts].number = number; | |
59 | sig_table[sig_table_nelts++].abbrev = abbrev; | |
60 | } | |
61 | ||
62 | static void init_sigs () | |
63 | { | |
64 | #ifdef SYS_SIGLIST_MISSING | |
65 | /* Initialize signal names. */ | |
66 | for (i = 0; i < NSIG; i++) | |
67 | sys_siglist[i] = undoc; | |
68 | #endif /* SYS_SIGLIST_MISSING */ | |
69 | ||
70 | /* Initialize signal names. */ | |
71 | #if defined (SIGHUP) | |
72 | init_sig (SIGHUP, "HUP", "Hangup"); | |
73 | #endif | |
74 | #if defined (SIGINT) | |
75 | init_sig (SIGINT, "INT", "Interrupt"); | |
76 | #endif | |
77 | #if defined (SIGQUIT) | |
78 | init_sig (SIGQUIT, "QUIT", "Quit"); | |
79 | #endif | |
80 | #if defined (SIGILL) | |
81 | init_sig (SIGILL, "ILL", "Illegal Instruction"); | |
82 | #endif | |
83 | #if defined (SIGTRAP) | |
84 | init_sig (SIGTRAP, "TRAP", "Trace/breakpoint trap"); | |
85 | #endif | |
86 | /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because | |
87 | SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't. */ | |
88 | #if defined (SIGABRT) | |
89 | init_sig (SIGABRT, "ABRT", "Aborted"); | |
90 | #endif | |
91 | #if defined (SIGIOT) | |
92 | init_sig (SIGIOT, "IOT", "IOT trap"); | |
93 | #endif | |
94 | #if defined (SIGEMT) | |
95 | init_sig (SIGEMT, "EMT", "EMT trap"); | |
96 | #endif | |
97 | #if defined (SIGFPE) | |
98 | init_sig (SIGFPE, "FPE", "Floating point exception"); | |
99 | #endif | |
100 | #if defined (SIGKILL) | |
101 | init_sig (SIGKILL, "KILL", "Killed"); | |
102 | #endif | |
103 | #if defined (SIGBUS) | |
104 | init_sig (SIGBUS, "BUS", "Bus error"); | |
105 | #endif | |
106 | #if defined (SIGSEGV) | |
107 | init_sig (SIGSEGV, "SEGV", "Segmentation fault"); | |
108 | #endif | |
109 | #if defined (SIGSYS) | |
110 | init_sig (SIGSYS, "SYS", "Bad system call"); | |
111 | #endif | |
112 | #if defined (SIGPIPE) | |
113 | init_sig (SIGPIPE, "PIPE", "Broken pipe"); | |
114 | #endif | |
115 | #if defined (SIGALRM) | |
116 | init_sig (SIGALRM, "ALRM", "Alarm clock"); | |
117 | #endif | |
118 | #if defined (SIGTERM) | |
119 | init_sig (SIGTERM, "TERM", "Terminated"); | |
120 | #endif | |
121 | #if defined (SIGUSR1) | |
122 | init_sig (SIGUSR1, "USR1", "User defined signal 1"); | |
123 | #endif | |
124 | #if defined (SIGUSR2) | |
125 | init_sig (SIGUSR2, "USR2", "User defined signal 2"); | |
126 | #endif | |
127 | /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that | |
128 | is what is in POSIX.1. */ | |
129 | #if defined (SIGCHLD) | |
130 | init_sig (SIGCHLD, "CHLD", "Child exited"); | |
131 | #endif | |
132 | #if defined (SIGCLD) | |
133 | init_sig (SIGCLD, "CLD", "Child exited"); | |
134 | #endif | |
135 | #if defined (SIGPWR) | |
136 | init_sig (SIGPWR, "PWR", "Power failure"); | |
137 | #endif | |
138 | #if defined (SIGTSTP) | |
139 | init_sig (SIGTSTP, "TSTP", "Stopped"); | |
140 | #endif | |
141 | #if defined (SIGTTIN) | |
142 | init_sig (SIGTTIN, "TTIN", "Stopped (tty input)"); | |
143 | #endif | |
144 | #if defined (SIGTTOU) | |
145 | init_sig (SIGTTOU, "TTOU", "Stopped (tty output)"); | |
146 | #endif | |
147 | #if defined (SIGSTOP) | |
148 | init_sig (SIGSTOP, "STOP", "Stopped (signal)"); | |
149 | #endif | |
150 | #if defined (SIGXCPU) | |
151 | init_sig (SIGXCPU, "XCPU", "CPU time limit exceeded"); | |
152 | #endif | |
153 | #if defined (SIGXFSZ) | |
154 | init_sig (SIGXFSZ, "XFSZ", "File size limit exceeded"); | |
155 | #endif | |
156 | #if defined (SIGVTALRM) | |
157 | init_sig (SIGVTALRM, "VTALRM", "Virtual timer expired"); | |
158 | #endif | |
159 | #if defined (SIGPROF) | |
160 | init_sig (SIGPROF, "PROF", "Profiling timer expired"); | |
161 | #endif | |
162 | #if defined (SIGWINCH) | |
163 | /* "Window size changed" might be more accurate, but even if that | |
164 | is all that it means now, perhaps in the future it will be | |
165 | extended to cover other kinds of window changes. */ | |
166 | init_sig (SIGWINCH, "WINCH", "Window changed"); | |
167 | #endif | |
168 | #if defined (SIGCONT) | |
169 | init_sig (SIGCONT, "CONT", "Continued"); | |
170 | #endif | |
171 | #if defined (SIGURG) | |
172 | init_sig (SIGURG, "URG", "Urgent I/O condition"); | |
173 | #endif | |
174 | #if defined (SIGIO) | |
175 | /* "I/O pending" has also been suggested. A disadvantage is | |
176 | that signal only happens when the process has | |
177 | asked for it, not everytime I/O is pending. Another disadvantage | |
178 | is the confusion from giving it a different name than under Unix. */ | |
179 | init_sig (SIGIO, "IO", "I/O possible"); | |
180 | #endif | |
181 | #if defined (SIGWIND) | |
182 | init_sig (SIGWIND, "WIND", "SIGWIND"); | |
183 | #endif | |
184 | #if defined (SIGPHONE) | |
185 | init_sig (SIGPHONE, "PHONE", "SIGPHONE"); | |
186 | #endif | |
187 | #if defined (SIGPOLL) | |
188 | init_sig (SIGPOLL, "POLL", "I/O possible"); | |
189 | #endif | |
190 | #if defined (SIGLOST) | |
191 | init_sig (SIGLOST, "LOST", "Resource lost"); | |
192 | #endif | |
193 | } | |
194 | ||
195 | /* Return the abbreviation for signal NUMBER. */ | |
196 | char * | |
197 | sig_abbrev (number) | |
198 | int number; | |
199 | { | |
200 | int i; | |
201 | ||
202 | for (i = 0; i < sig_table_nelts; i++) | |
203 | if (sig_table[i].number == number) | |
204 | return (char *)sig_table[i].abbrev; | |
205 | return NULL; | |
206 | } | |
207 | ||
208 | /* Return the signal number for an ABBREV, or -1 if there is no | |
209 | signal by that name. */ | |
210 | int | |
211 | sig_number (abbrev) | |
212 | CONST char *abbrev; | |
213 | { | |
214 | int i; | |
215 | ||
216 | /* Skip over "SIG" if present. */ | |
217 | if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G') | |
218 | abbrev += 3; | |
219 | ||
220 | for (i = 0; i < sig_table_nelts; i++) | |
221 | if (abbrev[0] == sig_table[i].abbrev[0] | |
222 | && strcmp (abbrev, sig_table[i].abbrev) == 0) | |
223 | return sig_table[i].number; | |
224 | return -1; | |
225 | } | |
226 | ||
227 | #if defined (SYS_SIGLIST_MISSING) | |
228 | /* Print to standard error the name of SIGNAL, preceded by MESSAGE and | |
229 | a colon, and followed by a newline. */ | |
230 | void | |
231 | psignal (signal, message) | |
232 | unsigned signal; | |
233 | CONST char *message; | |
234 | { | |
235 | if (signal <= 0 || signal >= NSIG) | |
236 | fprintf (stderr, "%s: unknown signal", message); | |
237 | else | |
238 | fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]); | |
239 | } | |
240 | #endif | |
241 | ||
242 | void | |
243 | _initialize_signame () | |
244 | { | |
245 | init_sigs (); | |
246 | } |