91 lines
2.5 KiB
Diff
91 lines
2.5 KiB
Diff
From 3dd7829433f63b2ec1323a1f237efa7d67ea6e2b Mon Sep 17 00:00:00 2001
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From: Christian Brauner <christian.brauner@ubuntu.com>
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Date: Fri, 26 Jul 2019 08:20:02 +0200
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Subject: [PATCH] network: restore ability to move nl80211 devices
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Closes #3105.
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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
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---
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src/lxc/network.c | 31 +++++++++++++++++--------------
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1 file changed, 17 insertions(+), 14 deletions(-)
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diff --git src/lxc/network.c src/lxc/network.c
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index 9755116ba1..7684f95918 100644
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--- src/lxc/network.c
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+++ src/lxc/network.c
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@@ -1248,22 +1248,21 @@ static int lxc_netdev_rename_by_name_in_netns(pid_t pid, const char *old,
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static int lxc_netdev_move_wlan(char *physname, const char *ifname, pid_t pid,
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const char *newname)
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{
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- char *cmd;
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+ __do_free char *cmd = NULL;
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pid_t fpid;
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- int err = -1;
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/* Move phyN into the container. TODO - do this using netlink.
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* However, IIUC this involves a bit more complicated work to talk to
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* the 80211 module, so for now just call out to iw.
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*/
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cmd = on_path("iw", NULL);
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- if (!cmd)
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- goto out1;
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- free(cmd);
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+ if (!cmd) {
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+ return -1;
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+ }
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fpid = fork();
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if (fpid < 0)
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- goto out1;
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+ return -1;
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if (fpid == 0) {
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char pidstr[30];
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@@ -1274,21 +1273,18 @@ static int lxc_netdev_move_wlan(char *physname, const char *ifname, pid_t pid,
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}
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if (wait_for_pid(fpid))
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- goto out1;
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+ return -1;
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- err = 0;
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if (newname)
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- err = lxc_netdev_rename_by_name_in_netns(pid, ifname, newname);
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+ return lxc_netdev_rename_by_name_in_netns(pid, ifname, newname);
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-out1:
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- free(physname);
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- return err;
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+ return 0;
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}
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int lxc_netdev_move_by_name(const char *ifname, pid_t pid, const char* newname)
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{
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+ __do_free char *physname = NULL;
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int index;
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- char *physname;
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if (!ifname)
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return -EINVAL;
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@@ -3279,13 +3275,20 @@ int lxc_network_move_created_netdev_priv(struct lxc_handler *handler)
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return 0;
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lxc_list_for_each(iterator, network) {
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+ __do_free char *physname = NULL;
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int ret;
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struct lxc_netdev *netdev = iterator->elem;
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if (!netdev->ifindex)
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continue;
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- ret = lxc_netdev_move_by_index(netdev->ifindex, pid, NULL);
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+ if (netdev->type == LXC_NET_PHYS)
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+ physname = is_wlan(netdev->link);
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+
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+ if (physname)
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+ ret = lxc_netdev_move_wlan(physname, netdev->link, pid, NULL);
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+ else
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+ ret = lxc_netdev_move_by_index(netdev->ifindex, pid, NULL);
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if (ret) {
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errno = -ret;
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SYSERROR("Failed to move network device \"%s\" with ifindex %d to network namespace %d",
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