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system-linux: check ioctl return value in system_vlan()
[project/netifd.git]
/
system-linux.c
diff --git
a/system-linux.c
b/system-linux.c
index 0b594f67a55f80274b7009494a9843b113a4d843..9b654d16c2117d263cd325e7cff4a65d2744f380 100644
(file)
--- a/
system-linux.c
+++ b/
system-linux.c
@@
-1250,7
+1250,8
@@
static int system_vlan(struct device *dev, int id)
.u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD,
};
- ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
+ if (ioctl(sock_ioctl, SIOCSIFVLAN, &ifr) < 0)
+ return -1;
if (id < 0) {
ifr.cmd = DEL_VLAN_CMD;