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conf: do not deref null pointer

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner
2017-08-27 00:48:34 +02:00
parent 89d09707b0
commit 01b2d1f174
1 changed files with 11 additions and 5 deletions
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16
src/lxc/conf.c
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@@ -3324,11 +3324,17 @@ static int unpriv_assign_nic(const char *lxcpath, char *lxcname,
exit(EXIT_FAILURE);
pidstr[LXC_NUMSTRLEN64 - 1] = '\0';
INFO("Execing lxc-user-nic %s %s %s veth %s %s", lxcpath,
lxcname, pidstr, netdev_link, netdev->name);
execlp(LXC_USERNIC_PATH, LXC_USERNIC_PATH, lxcpath, lxcname,
pidstr, "veth", netdev_link, netdev->name, NULL);
INFO("Execing lxc-user-nic create %s %s %s veth %s %s", lxcpath,
lxcname, pidstr, netdev_link,
netdev->name ? netdev->name : "(null)");
if (netdev->name)
execlp(LXC_USERNIC_PATH, LXC_USERNIC_PATH, "create",
lxcpath, lxcname, pidstr, "veth", netdev_link,
netdev->name, (char *)NULL);
else
execlp(LXC_USERNIC_PATH, LXC_USERNIC_PATH, "create",
lxcpath, lxcname, pidstr, "veth", netdev_link,
(char *)NULL);
SYSERROR("Failed to exec lxc-user-nic.");
exit(EXIT_FAILURE);
}