[PATCHv6 5/8] sigchain: add command to pop all common signals

[Stefan Beller <sbeller@google.com>]

The new method removes all common signal handlers that were installed
by sigchain_push.

CC: Jeff King <peff@peff.net>
Signed-off-by: Stefan Beller <sbeller@google.com>
---
 sigchain.c | 9 +++++++++
 sigchain.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/sigchain.c b/sigchain.c
index faa375d..2ac43bb 100644
--- a/sigchain.c
+++ b/sigchain.c
@@ -50,3 +50,12 @@ void sigchain_push_common(sigchain_fun f)
 	sigchain_push(SIGQUIT, f);
 	sigchain_push(SIGPIPE, f);
 }
+
+void sigchain_pop_common(void)
+{
+	sigchain_pop(SIGPIPE);
+	sigchain_pop(SIGQUIT);
+	sigchain_pop(SIGTERM);
+	sigchain_pop(SIGHUP);
+	sigchain_pop(SIGINT);
+}
diff --git a/sigchain.h b/sigchain.h
index 618083b..138b20f 100644
--- a/sigchain.h
+++ b/sigchain.h
@@ -7,5 +7,6 @@ int sigchain_push(int sig, sigchain_fun f);
 int sigchain_pop(int sig);
 
 void sigchain_push_common(sigchain_fun f);
+void sigchain_pop_common(void);
 
 #endif /* SIGCHAIN_H */
-- 
2.5.0.275.gf20166c.dirty