Check return value of snprintf

Signed-off-by: Christian Brauner <christianvanbrauner@gmail.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

diff --git a/src/lxc/lxc_destroy.c b/src/lxc/lxc_destroy.c
index 39e289cb215144b9f292c9872cfe61584e5ba0fc..0eeff5128cb7e87972c833b2397957b483cdc92a 100644 (file)
--- a/src/lxc/lxc_destroy.c
+++ b/src/lxc/lxc_destroy.c
@@ -152,6 +152,8 @@ static int do_destroy_with_snapshots(struct lxc_container *c)
 
        /* Destroy snapshots created with lxc-clone listed in lxc-snapshots. */
        ret = snprintf(path, MAXPATHLEN, "%s/%s/lxc_snapshots", c->config_path, c->name);
+       if (ret < 0 || ret >= MAXPATHLEN)
+               return -1;
 
        fd = open(path, O_RDONLY | O_CLOEXEC);
        if (fd >= 0) {