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authorRob Landley <rob@landley.net>2006-07-12 19:17:55 +0000
committerRob Landley <rob@landley.net>2006-07-12 19:17:55 +0000
commitc9c1a41c581101f53cc36efae53cd8ebb568962f (patch)
tree0aa4024f33e22567444f78d83d7d4b7986abe795 /libbb/u_signal_names.c
parent801ab140132a111e9524371c9b8d425579692389 (diff)
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A couple things that got tangled up in my tree, easier to check in both than
untangle them: Rewrite u_signal_names() into get_signum() and get_signame(), plus trim the signal list to that required by posix (they can specify the numbers for the rest if they really need them). (This is preparatory cleanup for adding a timeout applet like Roberto Foglietta wants.) Export the itoa (added due to Denis Vlasenko, although it's not quite his preferred implementation) from xfuncs.c so it's actually used, and remove several other redundant implementations of itoa and utoa() in the tree.
Diffstat (limited to 'libbb/u_signal_names.c')
-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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