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From 913b8bd3eb3d1c4574d97d9e09411b199b2899d2 Mon Sep 17 00:00:00 2001
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From: Lukas Nykryn <lnykryn@redhat.com>
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Date: Fri, 9 Oct 2015 14:15:40 +0200
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Subject: [PATCH] udev: make naming for virtio devices opt-in
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rhel-only
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Resolves: #1269216
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---
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src/udev/udev-builtin-net_id.c | 19 +++++++++++++++++--
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src/udev/udevd.c | 6 +++---
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2 files changed, 20 insertions(+), 5 deletions(-)
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diff --git a/src/udev/udev-builtin-net_id.c b/src/udev/udev-builtin-net_id.c
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index ddd83d4..ffd6ea4 100644
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--- a/src/udev/udev-builtin-net_id.c
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+++ b/src/udev/udev-builtin-net_id.c
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@@ -281,14 +281,29 @@ out:
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static int names_pci(struct udev_device *dev, struct netnames *names) {
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struct udev_device *parent;
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+ static int do_virtio = -1;
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+
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+ if (do_virtio < 0) {
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+ _cleanup_free_ char *value = NULL;
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+ int n = 0;
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+ do_virtio = 0;
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+ if (get_proc_cmdline_key("net.ifnames", NULL) > 0)
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+ do_virtio = 1;
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+ else if (get_proc_cmdline_key("net.ifnames=", &value) > 0) {
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+ safe_atoi(value, &n);
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+ if (n > 0)
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+ do_virtio = 1;
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+ }
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+ }
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parent = udev_device_get_parent(dev);
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/* there can only ever be one virtio bus per parent device, so we can
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safely ignore any virtio buses. see
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<http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030331.html> */
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- while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))
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- parent = udev_device_get_parent(parent);
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+ if (do_virtio > 0)
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+ while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))
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+ parent = udev_device_get_parent(parent);
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if (!parent)
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return -ENOENT;
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diff --git a/src/udev/udevd.c b/src/udev/udevd.c
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index 87a3f69..21e7e7f 100644
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--- a/src/udev/udevd.c
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+++ b/src/udev/udevd.c
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@@ -1003,10 +1003,10 @@ static void kernel_cmdline_options(struct udev *udev) {
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r = safe_atou64(value, &arg_event_timeout_usec);
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if (r < 0) {
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log_warning("Invalid udev.event-timeout ignored: %s", value);
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- break;
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+ } else {
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+ arg_event_timeout_usec *= USEC_PER_SEC;
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+ arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
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}
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- arg_event_timeout_usec *= USEC_PER_SEC;
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- arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
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}
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free(s);
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