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From 913b8bd3eb3d1c4574d97d9e09411b199b2899d2 Mon Sep 17 00:00:00 2001
From: Lukas Nykryn <lnykryn@redhat.com>
Date: Fri, 9 Oct 2015 14:15:40 +0200
Subject: [PATCH] udev: make naming for virtio devices opt-in
rhel-only
Resolves: #1269216
---
src/udev/udev-builtin-net_id.c | 19 +++++++++++++++++--
src/udev/udevd.c | 6 +++---
2 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/src/udev/udev-builtin-net_id.c b/src/udev/udev-builtin-net_id.c
index ddd83d4f1..ffd6ea416 100644
--- a/src/udev/udev-builtin-net_id.c
+++ b/src/udev/udev-builtin-net_id.c
@@ -281,14 +281,29 @@ out:
static int names_pci(struct udev_device *dev, struct netnames *names) {
struct udev_device *parent;
+ static int do_virtio = -1;
+
+ if (do_virtio < 0) {
+ _cleanup_free_ char *value = NULL;
+ int n = 0;
+ do_virtio = 0;
+ if (get_proc_cmdline_key("net.ifnames", NULL) > 0)
+ do_virtio = 1;
+ else if (get_proc_cmdline_key("net.ifnames=", &value) > 0) {
+ safe_atoi(value, &n);
+ if (n > 0)
+ do_virtio = 1;
+ }
+ }
parent = udev_device_get_parent(dev);
/* there can only ever be one virtio bus per parent device, so we can
safely ignore any virtio buses. see
<http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030331.html> */
- while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))
- parent = udev_device_get_parent(parent);
+ if (do_virtio > 0)
+ while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))
+ parent = udev_device_get_parent(parent);
if (!parent)
return -ENOENT;
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 87a3f69e9..21e7e7f9a 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -1003,10 +1003,10 @@ static void kernel_cmdline_options(struct udev *udev) {
r = safe_atou64(value, &arg_event_timeout_usec);
if (r < 0) {
log_warning("Invalid udev.event-timeout ignored: %s", value);
- break;
+ } else {
+ arg_event_timeout_usec *= USEC_PER_SEC;
+ arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
}
- arg_event_timeout_usec *= USEC_PER_SEC;
- arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
}
free(s);