network: ensure interface name is NULL terminated

IFNAMSIZ includes the trailing NULL. Signed-off-by: Michael Santos <michael.santos@gmail.com> Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>

network: ensure interface name is NULL terminated
dae3fdf6 · Michael Santos · Daniel Lezcano · 76f74594 · dae3fdf6
Commit dae3fdf6 authored Mar 19, 2011 by Michael Santos Committed by Daniel Lezcano Mar 22, 2011
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Showing with 11 additions and 11 deletions

network.c src/lxc/network.c +11 -11

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--- a/src/lxc/network.c
+++ b/src/lxc/network.c
@@ -180,7 +180,7 @@ int lxc_netdev_rename_by_index(int ifindex, const char *newname)
 		return err;

 	len = strlen(newname);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto out;

 	err = -ENOMEM;
@@ -215,7 +215,7 @@ int lxc_netdev_rename_by_name(const char *oldname, const char *newname)
 	int len, index;

 	len = strlen(oldname);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		return -EINVAL;

 	index = if_nametoindex(oldname);
@@ -238,7 +238,7 @@ static int netdev_set_flag(const char *name, int flag)

 	err = -EINVAL;
 	len = strlen(name);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto out;

 	err = -ENOMEM;
@@ -285,7 +285,7 @@ int lxc_netdev_set_mtu(const char *name, int mtu)

 	err = -EINVAL;
 	len = strlen(name);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto out;

 	err = -ENOMEM;
@@ -344,11 +344,11 @@ int lxc_veth_create(const char *name1, const char *name2)

 	err = -EINVAL;
 	len = strlen(name1);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto out;

 	len = strlen(name2);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto out;

 	err = -ENOMEM;
@@ -420,11 +420,11 @@ int lxc_vlan_create(const char *master, const char *name, ushort vlanid)

 	err = -EINVAL;
 	len = strlen(master);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto err3;

 	len = strlen(name);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto err3;

 	err = -ENOMEM;
@@ -496,11 +496,11 @@ int lxc_macvlan_create(const char *master, const char *name, int mode)

 	err = -EINVAL;
 	len = strlen(master);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto out;

 	len = strlen(name);
-	if (len == 1 || len > IFNAMSIZ)
+	if (len == 1 || len >= IFNAMSIZ)
 		goto out;

 	err = -ENOMEM;
@@ -750,7 +750,7 @@ int lxc_bridge_attach(const char *bridge, const char *ifname)
 	int fd, index, err;
 	struct ifreq ifr;

-	if (strlen(ifname) > IFNAMSIZ)
+	if (strlen(ifname) >= IFNAMSIZ)
 		return -EINVAL;

 	index = if_nametoindex(ifname);