merged.

Bruce

In message: [meta-virtualization] [PATCH] lxc: restore the ability to move 
nl80211 device
on 12/09/2019 Yunguo Wei wrote:

> nl80211 device can't be moved to another namespace due to
> e389f2afd8509(start: unify and simplify network creation), and lxc
> community has fixed this issue with:
> 
> commit 3dd7829433f63b2ec1323a1f237efa7d67ea6e2b lxc upstream
> 
> This patch is grabbing the commit above, and should be abandoned with
> lxc uprev afterwards.
> 
> See more details here: https://github.com/lxc/lxc/issues/3105
> 
> Signed-off-by: Yunguo Wei <[email protected]>
> ---
>  ...k-restore-ability-to-move-nl80211-devices.patch | 94 
> ++++++++++++++++++++++
>  recipes-containers/lxc/lxc_3.2.1.bb                |  1 +
>  2 files changed, 95 insertions(+)
>  create mode 100644 
> recipes-containers/lxc/files/network-restore-ability-to-move-nl80211-devices.patch
> 
> diff --git 
> a/recipes-containers/lxc/files/network-restore-ability-to-move-nl80211-devices.patch
>  
> b/recipes-containers/lxc/files/network-restore-ability-to-move-nl80211-devices.patch
> new file mode 100644
> index 0000000..aa1aecd
> --- /dev/null
> +++ 
> b/recipes-containers/lxc/files/network-restore-ability-to-move-nl80211-devices.patch
> @@ -0,0 +1,94 @@
> +From 3dd7829433f63b2ec1323a1f237efa7d67ea6e2b Mon Sep 17 00:00:00 2001
> +From: Christian Brauner <[email protected]>
> +Date: Fri, 26 Jul 2019 08:20:02 +0200
> +Subject: [PATCH] network: restore ability to move nl80211 devices
> +
> +Closes #3105.
> +Signed-off-by: Christian Brauner <[email protected]>
> +---
> + src/lxc/network.c | 31 +++++++++++++++++--------------
> + 1 file changed, 17 insertions(+), 14 deletions(-)
> +
> +diff --git a/src/lxc/network.c b/src/lxc/network.c
> +index 9755116..7684f95 100644
> +--- a/src/lxc/network.c
> ++++ b/src/lxc/network.c
> +@@ -1248,22 +1248,21 @@ static int lxc_netdev_rename_by_name_in_netns(pid_t 
> pid, const char *old,
> + static int lxc_netdev_move_wlan(char *physname, const char *ifname, pid_t 
> pid,
> +                             const char *newname)
> + {
> +-    char *cmd;
> ++    __do_free char *cmd = NULL;
> +     pid_t fpid;
> +-    int err = -1;
> + 
> +     /* Move phyN into the container.  TODO - do this using netlink.
> +      * However, IIUC this involves a bit more complicated work to talk to
> +      * the 80211 module, so for now just call out to iw.
> +      */
> +     cmd = on_path("iw", NULL);
> +-    if (!cmd)
> +-            goto out1;
> +-    free(cmd);
> ++    if (!cmd) {
> ++            return -1;
> ++    }
> + 
> +     fpid = fork();
> +     if (fpid < 0)
> +-            goto out1;
> ++            return -1;
> + 
> +     if (fpid == 0) {
> +             char pidstr[30];
> +@@ -1274,21 +1273,18 @@ static int lxc_netdev_move_wlan(char *physname, 
> const char *ifname, pid_t pid,
> +     }
> + 
> +     if (wait_for_pid(fpid))
> +-            goto out1;
> ++            return -1;
> + 
> +-    err = 0;
> +     if (newname)
> +-            err = lxc_netdev_rename_by_name_in_netns(pid, ifname, newname);
> ++            return lxc_netdev_rename_by_name_in_netns(pid, ifname, newname);
> + 
> +-out1:
> +-    free(physname);
> +-    return err;
> ++    return 0;
> + }
> + 
> + int lxc_netdev_move_by_name(const char *ifname, pid_t pid, const char* 
> newname)
> + {
> ++    __do_free char *physname = NULL;
> +     int index;
> +-    char *physname;
> + 
> +     if (!ifname)
> +             return -EINVAL;
> +@@ -3279,13 +3275,20 @@ int lxc_network_move_created_netdev_priv(struct 
> lxc_handler *handler)
> +             return 0;
> + 
> +     lxc_list_for_each(iterator, network) {
> ++            __do_free char *physname = NULL;
> +             int ret;
> +             struct lxc_netdev *netdev = iterator->elem;
> + 
> +             if (!netdev->ifindex)
> +                     continue;
> + 
> +-            ret = lxc_netdev_move_by_index(netdev->ifindex, pid, NULL);
> ++            if (netdev->type == LXC_NET_PHYS)
> ++                    physname = is_wlan(netdev->link);
> ++
> ++            if (physname)
> ++                    ret = lxc_netdev_move_wlan(physname, netdev->link, pid, 
> NULL);
> ++            else
> ++                    ret = lxc_netdev_move_by_index(netdev->ifindex, pid, 
> NULL);
> +             if (ret) {
> +                     errno = -ret;
> +                     SYSERROR("Failed to move network device \"%s\" with 
> ifindex %d to network namespace %d",
> +-- 
> +2.7.4
> +
> diff --git a/recipes-containers/lxc/lxc_3.2.1.bb 
> b/recipes-containers/lxc/lxc_3.2.1.bb
> index 585ab8f..4b8f10b 100644
> --- a/recipes-containers/lxc/lxc_3.2.1.bb
> +++ b/recipes-containers/lxc/lxc_3.2.1.bb
> @@ -43,6 +43,7 @@ SRC_URI = 
> "http://linuxcontainers.org/downloads/${BPN}-${PV}.tar.gz \
>       file://template-make-busybox-template-compatible-with-core-.patch \
>       file://tests-our-init-is-not-busybox.patch \
>       file://tests-add-no-validate-when-using-download-template.patch \
> +     file://network-restore-ability-to-move-nl80211-devices.patch \
>       file://dnsmasq.conf \
>       file://lxc-net \
>       "
> -- 
> 2.7.4
> 
> -- 
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