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Diffstat (limited to 'libbb/u_signal_names.c')
-rw-r--r--libbb/u_signal_names.c42
1 files changed, 37 insertions, 5 deletions
diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c
index 9263859..53ccdd1 100644
--- a/libbb/u_signal_names.c
+++ b/libbb/u_signal_names.c
@@ -7,6 +7,13 @@
* 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"
/* Believe it or not, but some arches have more than 32 SIGs!
@@ -134,20 +141,45 @@ int FAST_FUNC get_signum(const char *name)
if (strcasecmp(name, signals[i]) == 0)
return i;
-#if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
+#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') {
-#ifdef SIGIO
+# ifdef SIGIO
if (!name[2])
return SIGIO;
-#endif
-#ifdef 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)
+ 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;
+ }
+ }
+ 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;
+ }
}
+# endif
#endif
return -1;