signal names hack was wrong, it broke "get signal name" function.

Reverting :(

diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c
index c741f81..97e9949 100644 (file)
--- a/libbb/u_signal_names.c
+++ b/libbb/u_signal_names.c
@@ -9,9 +9,10 @@
 
 #include "libbb.h"
 
-#define KILL_MAX_SIG 32
+/* Believe it or not, but some arches have more than 32 SIGs!
+ * HPPA: SIGSTKFLT == 36. */
 
-static const char signals[KILL_MAX_SIG][6] = {
+static const char signals[][7] = {
        // SUSv3 says kill must support these, and specifies the numerical values,
        // http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html
        // {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"},
@@ -22,102 +23,98 @@ static const char signals[KILL_MAX_SIG][6] = {
        // {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
        // {SIGTTOU, "TTOU"}
 
-/* Believe it or not, but some arches have more than 32 SIGs!
- * HPPA: SIGSTKFLT == 36. We don't include those. */
-
-/* NB: longest (6-char) names are NOT nul-terminated */
        [0] = "EXIT",
-#if defined SIGHUP && SIGHUP < KILL_MAX_SIG
+#ifdef SIGHUP
        [SIGHUP   ] = "HUP",
 #endif
-#if defined SIGINT && SIGINT < KILL_MAX_SIG
+#ifdef SIGINT
        [SIGINT   ] = "INT",
 #endif
-#if defined SIGQUIT && SIGQUIT < KILL_MAX_SIG
+#ifdef SIGQUIT
        [SIGQUIT  ] = "QUIT",
 #endif
-#if defined SIGILL && SIGILL < KILL_MAX_SIG
+#ifdef SIGILL
        [SIGILL   ] = "ILL",
 #endif
-#if defined SIGTRAP && SIGTRAP < KILL_MAX_SIG
+#ifdef SIGTRAP
        [SIGTRAP  ] = "TRAP",
 #endif
-#if defined SIGABRT && SIGABRT < KILL_MAX_SIG
+#ifdef SIGABRT
        [SIGABRT  ] = "ABRT",
 #endif
-#if defined SIGBUS && SIGBUS < KILL_MAX_SIG
+#ifdef SIGBUS
        [SIGBUS   ] = "BUS",
 #endif
-#if defined SIGFPE && SIGFPE < KILL_MAX_SIG
+#ifdef SIGFPE
        [SIGFPE   ] = "FPE",
 #endif
-#if defined SIGKILL && SIGKILL < KILL_MAX_SIG
+#ifdef SIGKILL
        [SIGKILL  ] = "KILL",
 #endif
-#if defined SIGUSR1 && SIGUSR1 < KILL_MAX_SIG
+#ifdef SIGUSR1
        [SIGUSR1  ] = "USR1",
 #endif
-#if defined SIGSEGV && SIGSEGV < KILL_MAX_SIG
+#ifdef SIGSEGV
        [SIGSEGV  ] = "SEGV",
 #endif
-#if defined SIGUSR2 && SIGUSR2 < KILL_MAX_SIG
+#ifdef SIGUSR2
        [SIGUSR2  ] = "USR2",
 #endif
-#if defined SIGPIPE && SIGPIPE < KILL_MAX_SIG
+#ifdef SIGPIPE
        [SIGPIPE  ] = "PIPE",
 #endif
-#if defined SIGALRM && SIGALRM < KILL_MAX_SIG
+#ifdef SIGALRM
        [SIGALRM  ] = "ALRM",
 #endif
-#if defined SIGTERM && SIGTERM < KILL_MAX_SIG
+#ifdef SIGTERM
        [SIGTERM  ] = "TERM",
 #endif
-#if defined SIGSTKFLT && SIGSTKFLT < KILL_MAX_SIG
+#ifdef SIGSTKFLT
        [SIGSTKFLT] = "STKFLT",
 #endif
-#if defined SIGCHLD && SIGCHLD < KILL_MAX_SIG
+#ifdef SIGCHLD
        [SIGCHLD  ] = "CHLD",
 #endif
-#if defined SIGCONT && SIGCONT < KILL_MAX_SIG
+#ifdef SIGCONT
        [SIGCONT  ] = "CONT",
 #endif
-#if defined SIGSTOP && SIGSTOP < KILL_MAX_SIG
+#ifdef SIGSTOP
        [SIGSTOP  ] = "STOP",
 #endif
-#if defined SIGTSTP && SIGTSTP < KILL_MAX_SIG
+#ifdef SIGTSTP
        [SIGTSTP  ] = "TSTP",
 #endif
-#if defined SIGTTIN && SIGTTIN < KILL_MAX_SIG
+#ifdef SIGTTIN
        [SIGTTIN  ] = "TTIN",
 #endif
-#if defined SIGTTOU && SIGTTOU < KILL_MAX_SIG
+#ifdef SIGTTOU
        [SIGTTOU  ] = "TTOU",
 #endif
-#if defined SIGURG && SIGURG < KILL_MAX_SIG
+#ifdef SIGURG
        [SIGURG   ] = "URG",
 #endif
-#if defined SIGXCPU && SIGXCPU < KILL_MAX_SIG
+#ifdef SIGXCPU
        [SIGXCPU  ] = "XCPU",
 #endif
-#if defined SIGXFSZ && SIGXFSZ < KILL_MAX_SIG
+#ifdef SIGXFSZ
        [SIGXFSZ  ] = "XFSZ",
 #endif
-#if defined SIGVTALRM && SIGVTALRM < KILL_MAX_SIG
+#ifdef SIGVTALRM
        [SIGVTALRM] = "VTALRM",
 #endif
-#if defined SIGPROF && SIGPROF < KILL_MAX_SIG
+#ifdef SIGPROF
        [SIGPROF  ] = "PROF",
 #endif
-#if defined SIGWINCH && SIGWINCH < KILL_MAX_SIG
+#ifdef SIGWINCH
        [SIGWINCH ] = "WINCH",
 #endif
-#if defined SIGPOLL && SIGPOLL < KILL_MAX_SIG
+#ifdef SIGPOLL
        [SIGPOLL  ] = "POLL",
 #endif
-#if defined SIGPWR && SIGPWR < KILL_MAX_SIG
+#ifdef SIGPWR
        [SIGPWR   ] = "PWR",
 #endif
-#if defined SIGSYS && SIGSYS < KILL_MAX_SIG
+#ifdef SIGSYS
        [SIGSYS   ] = "SYS",
 #endif
 };
@@ -133,20 +130,20 @@ int get_signum(const char *name)
                return i;
        if (strncasecmp(name, "SIG", 3) == 0)
                name += 3;
-       if (strlen(name) > 6)
-               return -1;
        for (i = 0; i < ARRAY_SIZE(signals); i++)
-               if (strncasecmp(name, signals[i], 6) == 0)
+               if (strcasecmp(name, signals[i]) == 0)
                        return i;
 
 #if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
-       /* These are aliased to other names */
+       /* SIGIO[T] are aliased to other names,
+        * thus cannot be stored in the signals[] array.
+        * Need special code to recognize them */
        if ((name[0] | 0x20) == 'i' && (name[1] | 0x20) == 'o') {
-#if defined SIGIO
+#ifdef SIGIO
                if (!name[2])
                        return SIGIO;
 #endif
-#if defined SIGIOT
+#ifdef SIGIOT
                if ((name[2] | 0x20) == 't' && !name[3])
                        return SIGIOT;
 #endif