Changeset 1770 in MondoRescue for branches/stable/mindi-busybox/libbb/u_signal_names.c
- Timestamp:
- Nov 6, 2007, 11:01:53 AM (16 years ago)
- File:
-
- 1 edited
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branches/stable/mindi-busybox/libbb/u_signal_names.c
r821 r1770 1 1 /* vi: set sw=4 ts=4: */ 2 2 /* 3 * Utilityroutines.3 * Signal name/number conversion routines. 4 4 * 5 * Copyright (C) many different people. 6 * If you wrote this, please acknowledge your work. 5 * Copyright 2006 Rob Landley <rob@landley.net> 7 6 * 8 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 10 #include "libbb.h" 19 11 20 struct signal_name { 21 const char *name; 22 int number; 12 static const char signals[32][7] = { 13 // SUSv3 says kill must support these, and specifies the numerical values, 14 // http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html 15 // TODO: "[SIG]EXIT" shouldn't work for kill, right? 16 // {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"}, 17 // {6, "ABRT"}, {9, "KILL"}, {14, "ALRM"}, {15, "TERM"} 18 // And Posix adds the following: 19 // {SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"}, 20 // {SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"}, 21 // {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"}, 22 // {SIGTTOU, "TTOU"} 23 [0] = "EXIT", 24 #ifdef SIGHUP 25 [SIGHUP ] = "HUP", 26 #endif 27 #ifdef SIGINT 28 [SIGINT ] = "INT", 29 #endif 30 #ifdef SIGQUIT 31 [SIGQUIT ] = "QUIT", 32 #endif 33 #ifdef SIGILL 34 [SIGILL ] = "ILL", 35 #endif 36 #ifdef SIGTRAP 37 [SIGTRAP ] = "TRAP", 38 #endif 39 #ifdef SIGABRT 40 [SIGABRT ] = "ABRT", 41 #endif 42 #ifdef SIGBUS 43 [SIGBUS ] = "BUS", 44 #endif 45 #ifdef SIGFPE 46 [SIGFPE ] = "FPE", 47 #endif 48 #ifdef SIGKILL 49 [SIGKILL ] = "KILL", 50 #endif 51 #ifdef SIGUSR1 52 [SIGUSR1 ] = "USR1", 53 #endif 54 #ifdef SIGSEGV 55 [SIGSEGV ] = "SEGV", 56 #endif 57 #ifdef SIGUSR2 58 [SIGUSR2 ] = "USR2", 59 #endif 60 #ifdef SIGPIPE 61 [SIGPIPE ] = "PIPE", 62 #endif 63 #ifdef SIGALRM 64 [SIGALRM ] = "ALRM", 65 #endif 66 #ifdef SIGTERM 67 [SIGTERM ] = "TERM", 68 #endif 69 #ifdef SIGSTKFLT 70 [SIGSTKFLT] = "STKFLT", 71 #endif 72 #ifdef SIGCHLD 73 [SIGCHLD ] = "CHLD", 74 #endif 75 #ifdef SIGCONT 76 [SIGCONT ] = "CONT", 77 #endif 78 #ifdef SIGSTOP 79 [SIGSTOP ] = "STOP", 80 #endif 81 #ifdef SIGTSTP 82 [SIGTSTP ] = "TSTP", 83 #endif 84 #ifdef SIGTTIN 85 [SIGTTIN ] = "TTIN", 86 #endif 87 #ifdef SIGTTOU 88 [SIGTTOU ] = "TTOU", 89 #endif 90 #ifdef SIGURG 91 [SIGURG ] = "URG", 92 #endif 93 #ifdef SIGXCPU 94 [SIGXCPU ] = "XCPU", 95 #endif 96 #ifdef SIGXFSZ 97 [SIGXFSZ ] = "XFSZ", 98 #endif 99 #ifdef SIGVTALRM 100 [SIGVTALRM] = "VTALRM", 101 #endif 102 #ifdef SIGPROF 103 [SIGPROF ] = "PROF", 104 #endif 105 #ifdef SIGWINCH 106 [SIGWINCH ] = "WINCH", 107 #endif 108 #ifdef SIGPOLL 109 [SIGPOLL ] = "POLL", 110 #endif 111 #ifdef SIGPWR 112 [SIGPWR ] = "PWR", 113 #endif 114 #ifdef SIGSYS 115 [SIGSYS ] = "SYS", 116 #endif 23 117 }; 24 118 25 static const struct signal_name signames[] = { 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 */ 119 // Convert signal name to number. 120 121 int get_signum(const char *name) 122 { 123 int i; 124 125 i = bb_strtou(name, NULL, 10); 126 if (!errno) 127 return i; 128 if (strncasecmp(name, "SIG", 3) == 0) 129 name += 3; 130 for (i = 0; i < ARRAY_SIZE(signals); i++) 131 if (strcasecmp(name, signals[i]) == 0) 132 return i; 133 134 #if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO)) 135 /* These are aliased to other names */ 136 if ((name[0] | 0x20) == 'i' && (name[1] | 0x20) == 'o') { 137 #ifdef SIGIO 138 if (!name[2]) 139 return SIGIO; 50 140 #endif 51 141 #ifdef SIGIOT 52 { "IOT", SIGIOT }, /* 6, same as SIGABRT */ 142 if ((name[2] | 0x20) == 't' && !name[3]) 143 return SIGIOT; 53 144 #endif 54 #ifdef SIGEMT 55 { "EMT", SIGEMT }, /* 7 (mips,alpha,sparc*) */ 145 } 56 146 #endif 57 #ifdef SIGBUS58 { "BUS", SIGBUS }, /* 7 (arm,i386,m68k,ppc), 10 (mips,alpha,sparc*) */59 #endif60 #ifdef SIGSYS61 { "SYS", SIGSYS }, /* 12 (mips,alpha,sparc*) */62 #endif63 #ifdef SIGSTKFLT64 { "STKFLT", SIGSTKFLT }, /* 16 (arm,i386,m68k,ppc) */65 #endif66 #ifdef SIGURG67 { "URG", SIGURG }, /* 23 (arm,i386,m68k,ppc), 16 (alpha,sparc*), 21 (mips) */68 #endif69 #ifdef SIGIO70 { "IO", SIGIO }, /* 29 (arm,i386,m68k,ppc), 23 (alpha,sparc*), 22 (mips) */71 #endif72 #ifdef SIGPOLL73 { "POLL", SIGPOLL }, /* same as SIGIO */74 #endif75 #ifdef SIGCLD76 { "CLD", SIGCLD }, /* same as SIGCHLD (mips) */77 #endif78 #ifdef SIGXCPU79 { "XCPU", SIGXCPU }, /* 24 (arm,i386,m68k,ppc,alpha,sparc*), 30 (mips) */80 #endif81 #ifdef SIGXFSZ82 { "XFSZ", SIGXFSZ }, /* 25 (arm,i386,m68k,ppc,alpha,sparc*), 31 (mips) */83 #endif84 #ifdef SIGVTALRM85 { "VTALRM", SIGVTALRM }, /* 26 (arm,i386,m68k,ppc,alpha,sparc*), 28 (mips) */86 #endif87 #ifdef SIGPROF88 { "PROF", SIGPROF }, /* 27 (arm,i386,m68k,ppc,alpha,sparc*), 29 (mips) */89 #endif90 #ifdef SIGPWR91 { "PWR", SIGPWR }, /* 30 (arm,i386,m68k,ppc), 29 (alpha,sparc*), 19 (mips) */92 #endif93 #ifdef SIGINFO94 { "INFO", SIGINFO }, /* 29 (alpha) */95 #endif96 #ifdef SIGLOST97 { "LOST", SIGLOST }, /* 29 (arm,i386,m68k,ppc,sparc*) */98 #endif99 #ifdef SIGWINCH100 { "WINCH", SIGWINCH }, /* 28 (arm,i386,m68k,ppc,alpha,sparc*), 20 (mips) */101 #endif102 #ifdef SIGUNUSED103 { "UNUSED", SIGUNUSED }, /* 31 (arm,i386,m68k,ppc) */104 #endif105 {0, 0}106 };107 147 108 /* 109 if str_sig == NULL returned signal name [*signo], 110 if str_sig != NULL - set *signo from signal_name, 111 findings with digit number or with or without SIG-prefix name 148 return -1; 149 } 112 150 113 if startnum=0 flag for support finding zero signal, 114 but str_sig="0" always found, (hmm - standart or realize?) 115 if startnum<0 returned reverse signal_number <-> signal_name 116 if found error - returned NULL 151 // Convert signal number to name 117 152 118 */ 153 const char *get_signame(int number) 154 { 155 if ((unsigned)number < ARRAY_SIZE(signals)) { 156 if (signals[number][0]) /* if it's not an empty str */ 157 return signals[number]; 158 } 119 159 120 const char * 121 u_signal_names(const char *str_sig, int *signo, int startnum) 122 { 123 static char retstr[16]; 124 const struct signal_name *s = signames; 125 static const char prefix[] = "SIG"; 126 const char *sptr; 127 128 if(startnum) 129 s++; 130 if(str_sig==NULL) { 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 } 171 } 172 if(s->name==0) 173 return NULL; 174 if(s!=signames) 175 strcpy(retstr, prefix); 176 else 177 retstr[0] = 0; 178 return strcat(retstr, s->name); 160 return itoa(number); 179 161 }
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