autofs-5.1.4 - fix deadlock in dumpmaps

From: Ian Kent <raven@themaw.net>

Commit a223d11fa8e (autofs-5.1.3 - serialize calls to open_xxxx()

functions) introduces a deadlock when using the dumpmaps function.

In this case the open fd mutex needs to be unlocked in the forked

child process of the do_spawn() function.

Signed-off-by: Ian Kent <raven@themaw.net>

---

 CHANGELOG      |    1 +

 daemon/spawn.c |    1 +

 2 files changed, 2 insertions(+)

--- autofs-5.0.7.orig/CHANGELOG

+++ autofs-5.0.7/CHANGELOG

@@ -290,6 +290,7 @@

 - move open_xxxx() functions to spawn.c.

 - serialize calls to open_xxxx() functions.

 - fix use after free in do_master_list_reset().

+- fix deadlock in dumpmaps.

 25/07/2012 autofs-5.0.7

 =======================

--- autofs-5.0.7.orig/daemon/spawn.c

+++ autofs-5.0.7/daemon/spawn.c

@@ -337,6 +337,7 @@ static int do_spawn(unsigned logopt, uns

 		dup2(pipefd[1], STDOUT_FILENO);

 		dup2(pipefd[1], STDERR_FILENO);

 		close(pipefd[1]);

+		open_mutex_unlock();

 		/* what to mount must always be second last */

 		while (*pargv++)