From 359016032239e0a585c01bffe04b72ab037e5de4 Mon Sep 17 00:00:00 2001
From: Tomas Hozza <thozza@redhat.com>
Date: Wed, 22 May 2013 14:54:30 +0200
Subject: [PATCH] tools: hv: Check return value of setsockopt call
Check return value of setsockopt call and if it fails print error
to the system log and exit with non-zero value.
Signed-off-by: Tomas Hozza <thozza@redhat.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/hv/hv_kvp_daemon.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 5a1f6489d185..ae9aa1cd97fe 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -1457,7 +1457,13 @@ int main(void)
exit(EXIT_FAILURE);
}
nl_group = CN_KVP_IDX;
- setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group));
+
+ if (setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group)) < 0) {
+ syslog(LOG_ERR, "setsockopt failed; error: %d %s", errno, strerror(errno));
+ close(fd);
+ exit(EXIT_FAILURE);
+ }
+
/*
* Register ourselves with the kernel.
*/
--
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