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Diffstat (limited to 'src/libstddjb/skasigaction.c')
-rw-r--r--src/libstddjb/skasigaction.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/src/libstddjb/skasigaction.c b/src/libstddjb/skasigaction.c
new file mode 100644
index 0000000..a673fcb
--- /dev/null
+++ b/src/libstddjb/skasigaction.c
@@ -0,0 +1,24 @@
+/* ISC license. */
+
+#include <signal.h>
+#include <skalibs/sysdeps.h>
+#include <skalibs/sig.h>
+
+int skasigaction (int sig, struct skasigaction const *new, struct skasigaction *old)
+{
+ struct sigaction sanew, saold ;
+ if (((new->flags & SKASA_MASKALL) ? sigfillset(&sanew.sa_mask) : sigemptyset(&sanew.sa_mask)) == -1) return -1 ;
+ sanew.sa_handler = new->handler ;
+ sanew.sa_flags = (new->flags & SKASA_NOCLDSTOP) ? SA_NOCLDSTOP : 0 ;
+ if (sigaction(sig, &sanew, &saold) == -1) return -1 ;
+ if (old)
+ {
+ register int r = sigismember(&saold.sa_mask, (sig == SIGTERM) ? SIGPIPE : SIGTERM) ;
+ if (r == -1) return -1 ;
+ old->flags = 0 ;
+ if (r) old->flags |= SKASA_MASKALL ;
+ if (saold.sa_flags & SA_NOCLDSTOP) old->flags |= SKASA_NOCLDSTOP ;
+ old->handler = saold.sa_handler ;
+ }
+ return 0 ;
+}