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authorMichael Adam <obnox@samba.org>2012-03-15 16:29:27 +0100
committerMichael Adam <obnox@samba.org>2012-03-15 18:41:37 +0100
commitc80f70390c3763d5d7248979db9542cd05b7cb44 (patch)
treea0f96da41205705839cec1dead1fc1762051a2e5 /source3/nmbd
parente5ebe67e3837cf4da0ae2c3d00c72a244b8f202f (diff)
downloadsamba-c80f70390c3763d5d7248979db9542cd05b7cb44.tar.gz
s3:smbd: let smbd/nmbd/winbindd child processes terminate if the parent process died.
This applies to all child processes making use of reinit_after_fork(). It is implemented by establishing a pipe between parent and child. The child watches for EOF on the read end of the pipe, indidcating an exited parent. Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Diffstat (limited to 'source3/nmbd')
-rw-r--r--source3/nmbd/nmbd.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/source3/nmbd/nmbd.c b/source3/nmbd/nmbd.c
index 52d7ed9e4e7..eff1eca2f16 100644
--- a/source3/nmbd/nmbd.c
+++ b/source3/nmbd/nmbd.c
@@ -951,6 +951,17 @@ static bool open_sockets(bool isdaemon, int port)
exit(1);
}
+ /*
+ * Do not initialize the parent-child-pipe before becoming
+ * a daemon: this is used to detect a died parent in the child
+ * process.
+ */
+ status = init_before_fork();
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
+ exit(1);
+ }
+
if (!nmbd_setup_sig_term_handler(msg))
exit(1);
if (!nmbd_setup_stdin_handler(msg, !Fork))