1 files changed, 110 insertions, 0 deletions
diff --git a/sig.c b/sig.c
new file mode 100644
index 0000000..0963948
--- /dev/null
+++ b/sig.c
@@ -0,0 +1,110 @@
+#include <signal.h>
+#include "sig.h"
+
+/**
+	@file sig.c
+	@author djb
+	@source qmail
+	@brief signal handling functions
+*/
+
+void sig_alarmblock() { sig_block(SIGALRM); }
+void sig_alarmunblock() { sig_unblock(SIGALRM); }
+void sig_alarmcatch(f) void (*f)(); { sig_catch(SIGALRM,f); }
+void sig_alarmdefault() { sig_catch(SIGALRM,SIG_DFL); }
+int sig_alarm = SIGALRM;
+
+void sig_block(int sig) 
+{
+  sigset_t ss;
+  sigemptyset(&ss);
+  sigaddset(&ss,sig);
+  sigprocmask(SIG_BLOCK,&ss,(sigset_t *) 0);
+}
+
+void sig_unblock(int sig) 
+{
+  sigset_t ss;
+  sigemptyset(&ss);
+  sigaddset(&ss,sig);
+  sigprocmask(SIG_UNBLOCK,&ss,(sigset_t *) 0);
+}
+
+void sig_blocknone() 
+{
+  sigset_t ss;
+  sigemptyset(&ss);
+  sigprocmask(SIG_SETMASK,&ss,(sigset_t *) 0);
+}
+
+void sig_catch(int sig,void (*f)()) 
+{
+  struct sigaction sa;
+  sa.sa_handler = f;
+  sa.sa_flags = 0;
+  sigemptyset(&sa.sa_mask);
+  sigaction(sig,&sa,(struct sigaction *) 0);
+}
+
+void sig_pause() 
+{
+  sigset_t ss;
+  sigemptyset(&ss);
+  sigsuspend(&ss);
+}
+
+void sig_pipeignore() { sig_catch(SIGPIPE,SIG_IGN); }
+void sig_pipedefault() { sig_catch(SIGPIPE,SIG_DFL); }
+int sig_pipe = SIGPIPE;
+
+void sig_childblock() { sig_block(SIGCHLD); }
+void sig_childunblock() { sig_unblock(SIGCHLD); }
+void sig_childcatch(f) void (*f)(); { sig_catch(SIGCHLD,f); }
+void sig_childdefault() { sig_catch(SIGCHLD,SIG_DFL); }
+int sig_child = SIGCHLD;
+
+void sig_hangupblock() { sig_block(SIGHUP); }
+void sig_hangupunblock() { sig_unblock(SIGHUP); }
+void sig_hangupcatch(f) void (*f)(); { sig_catch(SIGHUP,f); }
+void sig_hangupdefault() { sig_catch(SIGHUP,SIG_DFL); }
+int sig_hangup = SIGHUP;
+
+void sig_termblock() { sig_block(SIGTERM); }
+void sig_termunblock() { sig_unblock(SIGTERM); }
+void sig_termcatch(f) void (*f)(); { sig_catch(SIGTERM,f); }
+void sig_termdefault() { sig_catch(SIGTERM,SIG_DFL); }
+int sig_term = SIGTERM;
+
+void sig_bugcatch(void (*f)()) 
+{
+  sig_catch(SIGILL,f);
+  sig_catch(SIGABRT,f);
+  sig_catch(SIGFPE,f);
+  sig_catch(SIGBUS,f);
+  sig_catch(SIGSEGV,f);
+#ifdef SIGSYS
+  sig_catch(SIGSYS,f);
+#endif
+#ifdef SIGEMT
+  sig_catch(SIGEMT,f);
+#endif
+}
+void (*sig_defaulthandler)() = SIG_DFL;
+
+void sig_miscignore() 
+{
+  sig_catch(SIGVTALRM,SIG_IGN);
+  sig_catch(SIGPROF,SIG_IGN);
+  sig_catch(SIGQUIT,SIG_IGN);
+  sig_catch(SIGINT,SIG_IGN);
+  sig_catch(SIGHUP,SIG_IGN);
+#ifdef SIGXCPU
+  sig_catch(SIGXCPU,SIG_IGN);
+#endif
+#ifdef SIGXFSZ
+  sig_catch(SIGXFSZ,SIG_IGN);
+#endif
+}
+void (*sig_ignorehandler)() = SIG_IGN;
+
+int sig_cont = SIGCONT;