Oops. I forgot to commit this part of vodz' patch.

diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c
new file mode 100644 (file)
index 0000000..623b103
--- /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);
+}