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network: adhere to IFNAMSIZ limit

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The additional \0-byte space added is not needed since IFNAMSIZ needs to
include the \0-byte.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2018-05-11 00:54:47 +02:00
parent def4def6fd
commit 095ead8051
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GPG Key ID: 8EB056D53EECB12D
1 changed files with 3 additions and 3 deletions
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6
src/lxc/network.c
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@ -2089,7 +2089,7 @@ static int lxc_create_network_unpriv_exec(const char *lxcpath, const char *lxcna
pid_t child;
int bytes, pipefd[2];
char *token, *saveptr = NULL;
char netdev_link[IFNAMSIZ + 1];
char netdev_link[IFNAMSIZ];
char buffer[MAXPATHLEN] = {0};
if (netdev->type != LXC_NET_VETH) {
@ -2127,9 +2127,9 @@ static int lxc_create_network_unpriv_exec(const char *lxcpath, const char *lxcna
}
if (netdev->link[0] != '\0')
strncpy(netdev_link, netdev->link, IFNAMSIZ);
strncpy(netdev_link, netdev->link, IFNAMSIZ - 1);
else
strncpy(netdev_link, "none", IFNAMSIZ);
strncpy(netdev_link, "none", IFNAMSIZ - 1);
ret = snprintf(pidstr, LXC_NUMSTRLEN64, "%d", pid);
if (ret < 0 || ret >= LXC_NUMSTRLEN64)