*
* Copyright 2006 Rob Landley <rob@landley.net>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config FEATURE_RTMINMAX
+//config: bool "Support RTMIN[+n] and RTMAX[-n] signal names"
+//config: default y
+//config: help
+//config: Support RTMIN[+n] and RTMAX[-n] signal names
+//config: in kill, killall etc. This costs ~250 bytes.
+
#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][7] = {
+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
- // TODO: "[SIG]EXIT" shouldn't work for kill, right?
// {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"},
// {6, "ABRT"}, {9, "KILL"}, {14, "ALRM"}, {15, "TERM"}
// And Posix adds the following:
// {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. */
[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
+#if ENABLE_FEATURE_RTMINMAX
+# ifdef __SIGRTMIN
+ [__SIGRTMIN] = "RTMIN",
+# endif
+// This makes array about x2 bigger.
+// More compact approach is to special-case SIGRTMAX in print_signames()
+//# ifdef __SIGRTMAX
+// [__SIGRTMAX] = "RTMAX",
+//# endif
+#endif
};
// Convert signal name to number.
-int get_signum(const char *name)
+int FAST_FUNC get_signum(const char *name)
{
- int i;
+ unsigned i;
i = bb_strtou(name, NULL, 10);
if (!errno)
if (strcasecmp(name, signals[i]) == 0)
return i;
-#if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
- /* These are aliased to other names */
+#if ENABLE_DESKTOP
+# if defined(SIGIOT) || defined(SIGIO)
+ /* 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
+# endif
+# ifdef SIGIOT
if ((name[2] | 0x20) == 't' && !name[3])
return SIGIOT;
-#endif
+# endif
+ }
+# endif
+#endif
+
+#if ENABLE_FEATURE_RTMINMAX
+# if defined(SIGRTMIN) && defined(SIGRTMAX)
+/* libc may use some rt sigs for pthreads and therefore "remap" SIGRTMIN/MAX,
+ * but we want to use "raw" SIGRTMIN/MAX. Underscored names, if exist, provide
+ * them. If they don't exist, fall back to non-underscored ones: */
+# if !defined(__SIGRTMIN)
+# define __SIGRTMIN SIGRTMIN
+# endif
+# if !defined(__SIGRTMAX)
+# define __SIGRTMAX SIGRTMAX
+# endif
+ if (strncasecmp(name, "RTMIN", 5) == 0) {
+ if (!name[5])
+ return __SIGRTMIN;
+ if (name[5] == '+') {
+ i = bb_strtou(name + 6, NULL, 10);
+ if (!errno && i <= __SIGRTMAX - __SIGRTMIN)
+ return __SIGRTMIN + i;
+ }
}
+ else if (strncasecmp(name, "RTMAX", 5) == 0) {
+ if (!name[5])
+ return __SIGRTMAX;
+ if (name[5] == '-') {
+ i = bb_strtou(name + 6, NULL, 10);
+ if (!errno && i <= __SIGRTMAX - __SIGRTMIN)
+ return __SIGRTMAX - i;
+ }
+ }
+# endif
#endif
return -1;
// Convert signal number to name
-const char *get_signame(int number)
+const char* FAST_FUNC get_signame(int number)
{
if ((unsigned)number < ARRAY_SIZE(signals)) {
if (signals[number][0]) /* if it's not an empty str */
// Print the whole signal list
-void print_signames(void)
+void FAST_FUNC print_signames(void)
{
- int signo;
+ unsigned signo;
for (signo = 1; signo < ARRAY_SIZE(signals); signo++) {
const char *name = signals[signo];
if (name[0])
- puts(name);
+ printf("%2u) %s\n", signo, name);
}
+#if ENABLE_FEATURE_RTMINMAX
+# ifdef __SIGRTMAX
+ printf("%2u) %s\n", __SIGRTMAX, "RTMAX");
+# endif
+#endif
}
projects / oweals / busybox.git / blobdiff