X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Fu_signal_names.c;h=3f8c04c35fa05a3bd7e072d3c9007970821665fd;hb=d3d004dd3507f841745956a035fff68936378f9c;hp=31ebd895a9ebe5342fe8552a23738f70988cc86f;hpb=421d9e59416850968707dfec7a665cb0211b8d1c;p=oweals%2Fbusybox.git diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c index 31ebd895a..3f8c04c35 100644 --- a/libbb/u_signal_names.c +++ b/libbb/u_signal_names.c @@ -1,178 +1,58 @@ /* vi: set sw=4 ts=4: */ /* - * Utility routines. + * Signal name/number conversion routines. * - * Copyright (C) many different people. - * If you wrote this, please acknowledge your work. + * Copyright 2006 Rob Landley * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ -#include -#include -#include -#include -#include - #include "libbb.h" -struct signal_name { - const char *name; +static const struct signal_name { + char name[5]; int number; +} signals[] = { + // SUSv3 says kill must support these, and specifies the numerical values, + // http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html + {"0", 0}, {"HUP", 1}, {"INT", 2}, {"QUIT", 3}, {"ABRT", 6}, {"KILL", 9}, + {"ALRM", 14}, {"TERM", 15}, + // And Posix adds the following: + {"ILL", SIGILL}, {"TRAP", SIGTRAP}, {"FPE", SIGFPE}, {"USR1", SIGUSR1}, + {"SEGV", SIGSEGV}, {"USR2", SIGUSR2}, {"PIPE", SIGPIPE}, {"CHLD", SIGCHLD}, + {"CONT", SIGCONT}, {"STOP", SIGSTOP}, {"TSTP", SIGTSTP}, {"TTIN", SIGTTIN}, + {"TTOU", SIGTTOU} }; -static const struct signal_name signames[] = { - /* POSIX signals */ - { "EXIT", 0 }, /* 0 */ - { "HUP", SIGHUP }, /* 1 */ - { "INT", SIGINT }, /* 2 */ - { "QUIT", SIGQUIT }, /* 3 */ - { "ILL", SIGILL }, /* 4 */ - { "ABRT", SIGABRT }, /* 6 */ - { "FPE", SIGFPE }, /* 8 */ - { "KILL", SIGKILL }, /* 9 */ - { "SEGV", SIGSEGV }, /* 11 */ - { "PIPE", SIGPIPE }, /* 13 */ - { "ALRM", SIGALRM }, /* 14 */ - { "TERM", SIGTERM }, /* 15 */ - { "USR1", SIGUSR1 }, /* 10 (arm,i386,m68k,ppc), 30 (alpha,sparc*), 16 (mips) */ - { "USR2", SIGUSR2 }, /* 12 (arm,i386,m68k,ppc), 31 (alpha,sparc*), 17 (mips) */ - { "CHLD", SIGCHLD }, /* 17 (arm,i386,m68k,ppc), 20 (alpha,sparc*), 18 (mips) */ - { "CONT", SIGCONT }, /* 18 (arm,i386,m68k,ppc), 19 (alpha,sparc*), 25 (mips) */ - { "STOP", SIGSTOP }, /* 19 (arm,i386,m68k,ppc), 17 (alpha,sparc*), 23 (mips) */ - { "TSTP", SIGTSTP }, /* 20 (arm,i386,m68k,ppc), 18 (alpha,sparc*), 24 (mips) */ - { "TTIN", SIGTTIN }, /* 21 (arm,i386,m68k,ppc,alpha,sparc*), 26 (mips) */ - { "TTOU", SIGTTOU }, /* 22 (arm,i386,m68k,ppc,alpha,sparc*), 27 (mips) */ - /* Miscellaneous other signals */ -#ifdef SIGTRAP - { "TRAP", SIGTRAP }, /* 5 */ -#endif -#ifdef SIGIOT - { "IOT", SIGIOT }, /* 6, same as SIGABRT */ -#endif -#ifdef SIGEMT - { "EMT", SIGEMT }, /* 7 (mips,alpha,sparc*) */ -#endif -#ifdef SIGBUS - { "BUS", SIGBUS }, /* 7 (arm,i386,m68k,ppc), 10 (mips,alpha,sparc*) */ -#endif -#ifdef SIGSYS - { "SYS", SIGSYS }, /* 12 (mips,alpha,sparc*) */ -#endif -#ifdef SIGSTKFLT - { "STKFLT", SIGSTKFLT }, /* 16 (arm,i386,m68k,ppc) */ -#endif -#ifdef SIGURG - { "URG", SIGURG }, /* 23 (arm,i386,m68k,ppc), 16 (alpha,sparc*), 21 (mips) */ -#endif -#ifdef SIGIO - { "IO", SIGIO }, /* 29 (arm,i386,m68k,ppc), 23 (alpha,sparc*), 22 (mips) */ -#endif -#ifdef SIGPOLL - { "POLL", SIGPOLL }, /* same as SIGIO */ -#endif -#ifdef SIGCLD - { "CLD", SIGCLD }, /* same as SIGCHLD (mips) */ -#endif -#ifdef SIGXCPU - { "XCPU", SIGXCPU }, /* 24 (arm,i386,m68k,ppc,alpha,sparc*), 30 (mips) */ -#endif -#ifdef SIGXFSZ - { "XFSZ", SIGXFSZ }, /* 25 (arm,i386,m68k,ppc,alpha,sparc*), 31 (mips) */ -#endif -#ifdef SIGVTALRM - { "VTALRM", SIGVTALRM }, /* 26 (arm,i386,m68k,ppc,alpha,sparc*), 28 (mips) */ -#endif -#ifdef SIGPROF - { "PROF", SIGPROF }, /* 27 (arm,i386,m68k,ppc,alpha,sparc*), 29 (mips) */ -#endif -#ifdef SIGPWR - { "PWR", SIGPWR }, /* 30 (arm,i386,m68k,ppc), 29 (alpha,sparc*), 19 (mips) */ -#endif -#ifdef SIGINFO - { "INFO", SIGINFO }, /* 29 (alpha) */ -#endif -#ifdef SIGLOST - { "LOST", SIGLOST }, /* 29 (arm,i386,m68k,ppc,sparc*) */ -#endif -#ifdef SIGWINCH - { "WINCH", SIGWINCH }, /* 28 (arm,i386,m68k,ppc,alpha,sparc*), 20 (mips) */ -#endif -#ifdef SIGUNUSED - { "UNUSED", SIGUNUSED }, /* 31 (arm,i386,m68k,ppc) */ -#endif - {0, 0} -}; - -/* - if str_sig == NULL returned signal name [*signo], - if str_sig != NULL - set *signo from signal_name, - findings with digit number or with or without SIG-prefix name +// Convert signal name to number. - if startnum=0 flag for support finding zero signal, - but str_sig="0" always found, (hmm - standart or realize?) - if startnum<0 returned reverse signal_number <-> signal_name - if found error - returned NULL +int get_signum(const char *name) +{ + int i; + + i = atoi(name); + if(i) return i; + for(i=0; i < sizeof(signals) / sizeof(struct signal_name); i++) + if (!strcasecmp(signals[i].name, name) || + (!strncasecmp(signals[i].name, "SIG", 3) + && !strcasecmp(signals[i].name+3, signals[i].name))) + return signals[i].number; + return -1; +} -*/ +// Convert signal number to name -const char * -u_signal_names(const char *str_sig, int *signo, int startnum) +const char *get_signame(int number) { - static char retstr[16]; - const struct signal_name *s = signames; - static const char prefix[] = "SIG"; - const char *sptr; + int i; + static char buf[8]; - if(startnum) - s++; - if(str_sig==NULL) { - while (s->name != 0) { - if(s->number == *signo) - break; - s++; - } - } else { - if (isdigit(((unsigned char)*str_sig))) { - char *endp; - long int sn = strtol(str_sig, &endp, 10); - /* test correct and overflow */ - if(*endp == 0 && sn >= 0 && sn < NSIG) { - *signo = (int)sn; - /* test for unnamed */ - sptr = u_signal_names(0, signo, 0); - if(sptr==NULL) - return NULL; - if(sn!=0) - sptr += 3; - return sptr; - } - } else { - sptr = str_sig; - while (s->name != 0) { - if (strcasecmp(s->name, sptr) == 0) { - *signo = s->number; - if(startnum<0) { - sprintf(retstr, "%d", *signo); - return retstr; - } - break; - } - if(s!=signames && sptr == str_sig && - strncasecmp(sptr, prefix, 3) == 0) { - sptr += 3; /* strlen(prefix) */ - continue; - } - sptr = str_sig; - s++; - } + for (i=0; i < sizeof(signals) / sizeof(struct signal_name); i++) { + if (number == signals[i].number) { + return signals[i].name; } } - if(s->name==0) - return NULL; - if(s!=signames) - strcpy(retstr, prefix); - else - retstr[0] = 0; - return strcat(retstr, s->name); + + itoa_to_buf(number, buf, 8); + return buf; }