/* 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 <rob@landley.net>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <signal.h>
-#include <ctype.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
#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;
}
projects / oweals / busybox.git / blobdiff