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66 lines
2.8 KiB
66 lines
2.8 KiB
6 months ago
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From ca122b3f1e00ba6a70e7575266502579108c4b47 Mon Sep 17 00:00:00 2001
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From: Nick Rosbrook <nick.rosbrook@canonical.com>
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Date: Fri, 2 Dec 2022 15:35:25 -0500
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Subject: [PATCH] udev: attempt device rename even if interface is up
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Currently rename_netif() will not attempt to rename a device if it is
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already up, because the kernel will return -EBUSY unless live renaming
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is allowed on the device. This restriction will be removed in a future
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kernel version [1].
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To cover both cases, always attempt to rename the interface and return 0
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if we get -EBUSY.
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[1] https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=bd039b5ea2a9
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(cherry picked from commit 53584e7b61373c26635b906eb64e98fbd3fd3ba4)
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Related: RHEL-5988
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---
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src/udev/udev-event.c | 18 ++++++------------
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1 file changed, 6 insertions(+), 12 deletions(-)
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diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c
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index b3d92d5150..08d69cf1f0 100644
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--- a/src/udev/udev-event.c
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+++ b/src/udev/udev-event.c
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@@ -862,7 +862,6 @@ int udev_event_spawn(
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static int rename_netif(UdevEvent *event) {
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const char *oldname;
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sd_device *dev;
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- unsigned flags;
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int ifindex, r;
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assert(event);
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@@ -896,17 +895,7 @@ static int rename_netif(UdevEvent *event) {
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return 0;
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}
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- r = rtnl_get_link_info(&event->rtnl, ifindex, NULL, &flags, NULL, NULL, NULL);
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- if (r < 0)
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- return log_device_warning_errno(dev, r, "Failed to get link flags: %m");
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-
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- if (FLAGS_SET(flags, IFF_UP)) {
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- log_device_info(dev, "Network interface '%s' is already up, refusing to rename to '%s'.",
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- oldname, event->name);
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- return 0;
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- }
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-
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- /* Set ID_RENAMING boolean property here, and drop it in the corresponding move uevent later. */
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+ /* Set ID_RENAMING boolean property here. It will be dropped when the corresponding move uevent is processed. */
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r = device_add_property(dev, "ID_RENAMING", "1");
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if (r < 0)
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return log_device_warning_errno(dev, r, "Failed to add 'ID_RENAMING' property: %m");
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@@ -927,6 +916,11 @@ static int rename_netif(UdevEvent *event) {
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return log_device_debug_errno(event->dev_db_clone, r, "Failed to update database under /run/udev/data/: %m");
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r = rtnl_set_link_name(&event->rtnl, ifindex, event->name);
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+ if (r == -EBUSY) {
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+ log_device_info(dev, "Network interface '%s' is already up, cannot rename to '%s'.",
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+ oldname, event->name);
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+ return 0;
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+ }
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if (r < 0)
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return log_device_error_errno(dev, r, "Failed to rename network interface %i from '%s' to '%s': %m",
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ifindex, oldname, event->name);
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