diff options
| author | Ben Pfaff <blp@nicira.com> | 2013-04-26 13:20:30 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2013-07-23 11:38:17 -0700 |
| commit | 6027d03dc347e3ea4d965571382e4ed8545fbed2 (patch) | |
| tree | 06b90adb038f0f2164b8b24a14f08ece753bece9 /lib/netdev-vport.c | |
| parent | d0c79f7fe0954b5d607e4190d26bb6b5ba75ceaf (diff) | |
netdev-vport: Make pid checking in set_tunnel_config() thread-safe
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
Diffstat (limited to 'lib/netdev-vport.c')
| -rw-r--r-- | lib/netdev-vport.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c index 885bf5e3..4214b383 100644 --- a/lib/netdev-vport.c +++ b/lib/netdev-vport.c @@ -413,13 +413,17 @@ set_tunnel_config(struct netdev *dev_, const struct smap *args) } if (tnl_cfg.ipsec) { + static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; static pid_t pid = 0; + + pthread_mutex_lock(&mutex); if (pid <= 0) { char *file_name = xasprintf("%s/%s", ovs_rundir(), "ovs-monitor-ipsec.pid"); pid = read_pidfile(file_name); free(file_name); } + pthread_mutex_unlock(&mutex); if (pid < 0) { VLOG_ERR("%s: IPsec requires the ovs-monitor-ipsec daemon", |