diff options
| -rw-r--r-- | libbb/u_signal_names.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c new file mode 100644 index 000000000..623b10312 --- /dev/null +++ b/libbb/u_signal_names.c @@ -0,0 +1,166 @@ +#include <signal.h> +#include <ctype.h> +#include <string.h> +#include <stdlib.h> +#include <stdio.h> + +struct signal_name { + const char *name; + int number; +}; + +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 + + 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 + +*/ + +const char * +u_signal_names(const char *str_sig, int *signo, int startnum) +{ + static char retstr[16]; + const struct signal_name *s = signames; + static const char prefix[] = "SIG"; + const char *sptr; + + 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++; + } + } + } + if(s->name==0) + return NULL; + if(s!=signames) + strcpy(retstr, prefix); + else + retstr[0] = 0; + return strcat(retstr, s->name); +} |