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-rw-r--r--libbb/u_signal_names.c200
1 files changed, 40 insertions, 160 deletions
diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c
index bf65fa3e9..62fab810d 100644
--- a/libbb/u_signal_names.c
+++ b/libbb/u_signal_names.c
@@ -1,179 +1,59 @@
1/* vi: set sw=4 ts=4: */ 1/* vi: set sw=4 ts=4: */
2/* 2/*
3 * Utility routines. 3 * Signal name/number conversion routines.
4 * 4 *
5 * Copyright (C) many different people. 5 * Copyright 2006 Rob Landley <rob@landley.net>
6 * If you wrote this, please acknowledge your work.
7 * 6 *
8 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. 7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 */ 8 */
10 9
11#include <signal.h>
12#include <ctype.h>
13#include <string.h>
14#include <strings.h>
15#include <stdlib.h>
16#include <stdio.h>
17
18#include "libbb.h" 10#include "libbb.h"
19 11
20struct signal_name { 12static struct signal_name {
21 const char *name; 13 char *name;
22 int number; 14 int number;
15} signals[] = {
16 // SUSv3 says kill must support these, and specifies the numerical values,
17 // http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html
18 {"0", 0}, {"HUP", 1}, {"INT", 2}, {"QUIT", 3}, {"ABRT", 6}, {"KILL", 9},
19 {"ALRM", 14}, {"TERM", 15},
20 // And Posix adds the following:
21 {"ILL", SIGILL}, {"TRAP", SIGTRAP}, {"FPE", SIGFPE}, {"USR1", SIGUSR1},
22 {"SEGV", SIGSEGV}, {"USR2", SIGUSR2}, {"PIPE", SIGPIPE}, {"CHLD", SIGCHLD},
23 {"CONT", SIGCONT}, {"STOP", SIGSTOP}, {"TSTP", SIGTSTP}, {"TTIN", SIGTTIN},
24 {"TTOU", SIGTTOU}
23}; 25};
24 26
25static const struct signal_name signames[] = { 27// Convert signal name to number.
26 /* POSIX signals */
27 { "EXIT", 0 }, /* 0 */
28 { "HUP", SIGHUP }, /* 1 */
29 { "INT", SIGINT }, /* 2 */
30 { "QUIT", SIGQUIT }, /* 3 */
31 { "ILL", SIGILL }, /* 4 */
32 { "ABRT", SIGABRT }, /* 6 */
33 { "FPE", SIGFPE }, /* 8 */
34 { "KILL", SIGKILL }, /* 9 */
35 { "SEGV", SIGSEGV }, /* 11 */
36 { "PIPE", SIGPIPE }, /* 13 */
37 { "ALRM", SIGALRM }, /* 14 */
38 { "TERM", SIGTERM }, /* 15 */
39 { "USR1", SIGUSR1 }, /* 10 (arm,i386,m68k,ppc), 30 (alpha,sparc*), 16 (mips) */
40 { "USR2", SIGUSR2 }, /* 12 (arm,i386,m68k,ppc), 31 (alpha,sparc*), 17 (mips) */
41 { "CHLD", SIGCHLD }, /* 17 (arm,i386,m68k,ppc), 20 (alpha,sparc*), 18 (mips) */
42 { "CONT", SIGCONT }, /* 18 (arm,i386,m68k,ppc), 19 (alpha,sparc*), 25 (mips) */
43 { "STOP", SIGSTOP }, /* 19 (arm,i386,m68k,ppc), 17 (alpha,sparc*), 23 (mips) */
44 { "TSTP", SIGTSTP }, /* 20 (arm,i386,m68k,ppc), 18 (alpha,sparc*), 24 (mips) */
45 { "TTIN", SIGTTIN }, /* 21 (arm,i386,m68k,ppc,alpha,sparc*), 26 (mips) */
46 { "TTOU", SIGTTOU }, /* 22 (arm,i386,m68k,ppc,alpha,sparc*), 27 (mips) */
47 /* Miscellaneous other signals */
48#ifdef SIGTRAP
49 { "TRAP", SIGTRAP }, /* 5 */
50#endif
51#ifdef SIGIOT
52 { "IOT", SIGIOT }, /* 6, same as SIGABRT */
53#endif
54#ifdef SIGEMT
55 { "EMT", SIGEMT }, /* 7 (mips,alpha,sparc*) */
56#endif
57#ifdef SIGBUS
58 { "BUS", SIGBUS }, /* 7 (arm,i386,m68k,ppc), 10 (mips,alpha,sparc*) */
59#endif
60#ifdef SIGSYS
61 { "SYS", SIGSYS }, /* 12 (mips,alpha,sparc*) */
62#endif
63#ifdef SIGSTKFLT
64 { "STKFLT", SIGSTKFLT }, /* 16 (arm,i386,m68k,ppc) */
65#endif
66#ifdef SIGURG
67 { "URG", SIGURG }, /* 23 (arm,i386,m68k,ppc), 16 (alpha,sparc*), 21 (mips) */
68#endif
69#ifdef SIGIO
70 { "IO", SIGIO }, /* 29 (arm,i386,m68k,ppc), 23 (alpha,sparc*), 22 (mips) */
71#endif
72#ifdef SIGPOLL
73 { "POLL", SIGPOLL }, /* same as SIGIO */
74#endif
75#ifdef SIGCLD
76 { "CLD", SIGCLD }, /* same as SIGCHLD (mips) */
77#endif
78#ifdef SIGXCPU
79 { "XCPU", SIGXCPU }, /* 24 (arm,i386,m68k,ppc,alpha,sparc*), 30 (mips) */
80#endif
81#ifdef SIGXFSZ
82 { "XFSZ", SIGXFSZ }, /* 25 (arm,i386,m68k,ppc,alpha,sparc*), 31 (mips) */
83#endif
84#ifdef SIGVTALRM
85 { "VTALRM", SIGVTALRM }, /* 26 (arm,i386,m68k,ppc,alpha,sparc*), 28 (mips) */
86#endif
87#ifdef SIGPROF
88 { "PROF", SIGPROF }, /* 27 (arm,i386,m68k,ppc,alpha,sparc*), 29 (mips) */
89#endif
90#ifdef SIGPWR
91 { "PWR", SIGPWR }, /* 30 (arm,i386,m68k,ppc), 29 (alpha,sparc*), 19 (mips) */
92#endif
93#ifdef SIGINFO
94 { "INFO", SIGINFO }, /* 29 (alpha) */
95#endif
96#ifdef SIGLOST
97 { "LOST", SIGLOST }, /* 29 (arm,i386,m68k,ppc,sparc*) */
98#endif
99#ifdef SIGWINCH
100 { "WINCH", SIGWINCH }, /* 28 (arm,i386,m68k,ppc,alpha,sparc*), 20 (mips) */
101#endif
102#ifdef SIGUNUSED
103 { "UNUSED", SIGUNUSED }, /* 31 (arm,i386,m68k,ppc) */
104#endif
105 {0, 0}
106};
107 28
108/* 29int get_signum(char *name)
109 if str_sig == NULL returned signal name [*signo], 30{
110 if str_sig != NULL - set *signo from signal_name, 31 int i;
111 findings with digit number or with or without SIG-prefix name 32
112 33 i = atoi(name);
113 if startnum=0 flag for support finding zero signal, 34 if(i) return i;
114 but str_sig="0" always found, (hmm - standart or realize?) 35 for(i=0; i < sizeof(signals) / sizeof(struct signal_name); i++)
115 if startnum<0 returned reverse signal_number <-> signal_name 36 if (!strcasecmp(signals[i].name, name) ||
116 if found error - returned NULL 37 (!strncasecmp(signals[i].name, "SIG", 3)
38 && !strcasecmp(signals[i].name+3, signals[i].name)))
39 return signals[i].number;
40 return -1;
41}
117 42
118*/ 43// Convert signal number to name
119 44
120const char * 45char *get_signame(int number)
121u_signal_names(const char *str_sig, int *signo, int startnum)
122{ 46{
123 static char retstr[16]; 47 int i;
124 const struct signal_name *s = signames; 48 static char buf[8];
125 static const char prefix[] = "SIG"; 49
126 const char *sptr; 50 itoa_to_buf(number, buf, 8);
127 51 for (i=0; i < sizeof(signals) / sizeof(struct signal_name); i++) {
128 if(startnum) 52 if (number == signals[i].number) {
129 s++; 53 sprintf("SIG%s", signals[i].name);
130 if(str_sig==NULL) { 54 break;
131 while (s->name != 0) {
132 if(s->number == *signo)
133 break;
134 s++;
135 }
136 } else {
137 if (isdigit(((unsigned char)*str_sig))) {
138 char *endp;
139 long int sn = strtol(str_sig, &endp, 10);
140 /* test correct and overflow */
141 if(*endp == 0 && sn >= 0 && sn < NSIG) {
142 *signo = (int)sn;
143 /* test for unnamed */
144 sptr = u_signal_names(0, signo, 0);
145 if(sptr==NULL)
146 return NULL;
147 if(sn!=0)
148 sptr += 3;
149 return sptr;
150 }
151 } else {
152 sptr = str_sig;
153 while (s->name != 0) {
154 if (strcasecmp(s->name, sptr) == 0) {
155 *signo = s->number;
156 if(startnum<0) {
157 sprintf(retstr, "%d", *signo);
158 return retstr;
159 }
160 break;
161 }
162 if(s!=signames && sptr == str_sig &&
163 strncasecmp(sptr, prefix, 3) == 0) {
164 sptr += 3; /* strlen(prefix) */
165 continue;
166 }
167 sptr = str_sig;
168 s++;
169 }
170 } 55 }
171 } 56 }
172 if(s->name==0) 57
173 return NULL; 58 return buf;
174 if(s!=signames)
175 strcpy(retstr, prefix);
176 else
177 retstr[0] = 0;
178 return strcat(retstr, s->name);
179} 59}
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