From 359016032239e0a585c01bffe04b72ab037e5de4 Mon Sep 17 00:00:00 2001 From: Tomas Hozza 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 Acked-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- 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 5a1f648..ae9aa1c 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. */ -- 2.7.4