From: Florian Forster <octo@leeloo.lan.home.verplant.org>
Date: Tue, 15 Sep 2009 13:40:47 +0000 (+0200)
Subject: exec plugin: Clear the signal block mask before calling exec(2).
X-Git-Tag: collectd-4.7.4~20
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=f6f13c914fe9ec2849dd360d96ff44571b37ab81

exec plugin: Clear the signal block mask before calling exec(2).
---

diff --git a/src/exec.c b/src/exec.c
index 1f8a9ac0..8719201e 100644
--- a/src/exec.c
+++ b/src/exec.c
@@ -382,6 +382,15 @@ static void exec_child (program_list_t *pl) /* {{{ */
   exit (-1);
 } /* void exec_child }}} */
 
+static void reset_signal_mask (void) /* {{{ */
+{
+  sigset_t ss;
+
+  memset (&ss, 0, sizeof (ss));
+  sigemptyset (&ss);
+  sigprocmask (SIG_SETMASK, &ss, /* old mask = */ NULL);
+} /* }}} void reset_signal_mask */
+
 /*
  * Creates three pipes (one for reading, one for writing and one for errors),
  * forks a child, sets up the pipes so that fd_in is connected to STDIN of
@@ -468,6 +477,9 @@ static int fork_child (program_list_t *pl, int *fd_in, int *fd_out, int *fd_err)
       close (fd_pipe_err[1]);
     }
 
+    /* Unblock all signals */
+    reset_signal_mask ();
+
     exec_child (pl);
     /* does not return */
   }