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/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) many different people.
* If you wrote this, please acknowledge your work.
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include <signal.h>
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <stdio.h>
#include "libbb.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);
}
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