systemd/1006-udev-always-rename-network.patch

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From: Robert Milasan <rmilasan@suse.com>
Date: Thu, 28 Mar 2013 09:24:43 +0000
Subject: udev always rename network
udev: ensure that the network interfaces are renamed even if they exist
(bnc#809843).
---
src/udev/udev-event.c | 46 +++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 43 insertions(+), 3 deletions(-)
Accepting request 184036 from home:elvigia:branches:Base:System - version 206 , highlights: * Unit files now understand the new %v specifier which resolves to the kernel version string as returned by "uname-r". * "journalctl -b" may now be used to look for boot output of a specific boot. Try "journalctl -b -1" * Creation of "dead" device nodes has been moved from udev into kmod and tmpfiles. * The udev "keymap" data files and tools to apply keyboard specific mappings of scan to key codes, and force-release scan code lists have been entirely replaced by a udev "keyboard" builtin and a hwdb data file. - remove patches now in upstream - systemd now requires libkmod >=14 and cryptsetup >= 1.6.0 - systemd now require the kmod tool in addition to the library. - version 206 , highlights: * Unit files now understand the new %v specifier which resolves to the kernel version string as returned by "uname-r". * "journalctl -b" may now be used to look for boot output of a specific boot. Try "journalctl -b -1" * Creation of "dead" device nodes has been moved from udev into kmod and tmpfiles. * The udev "keymap" data files and tools to apply keyboard specific mappings of scan to key codes, and force-release scan code lists have been entirely replaced by a udev "keyboard" builtin and a hwdb data file. - remove patches now in upstream - systemd now requires libkmod >=14 and cryptsetup >= 1.6.0 - systemd now require the kmod tool in addition to the library. (forwarded request 184035 from elvigia) OBS-URL: https://build.opensuse.org/request/show/184036 OBS-URL: https://build.opensuse.org/package/show/Base:System/systemd?expand=0&rev=416
2013-07-23 11:21:21 +02:00
--- systemd-206.orig/src/udev/udev-event.c
+++ systemd-206/src/udev/udev-event.c
@@ -750,6 +750,7 @@ static int rename_netif(struct udev_even
struct udev_device *dev = event->dev;
int sk;
struct ifreq ifr;
+ int loop;
int err;
log_debug("changing net interface name from '%s' to '%s'\n",
@@ -766,12 +767,51 @@ static int rename_netif(struct udev_even
strscpy(ifr.ifr_name, IFNAMSIZ, udev_device_get_sysname(dev));
strscpy(ifr.ifr_newname, IFNAMSIZ, event->name);
err = ioctl(sk, SIOCSIFNAME, &ifr);
- if (err >= 0) {
+ if (err == 0) {
print_kmsg("renamed network interface %s to %s\n", ifr.ifr_name, ifr.ifr_newname);
- } else {
+ goto out;
+ }
+
+ /* keep trying if the destination interface name already exists */
+ err = -errno;
+ if (err != -EEXIST) {
+ goto out;
+ }
+
+ /* free our own name, another process may wait for us */
+ snprintf(ifr.ifr_newname, IFNAMSIZ, "rename%u", udev_device_get_ifindex(dev));
+ err = ioctl(sk, SIOCSIFNAME, &ifr);
+ if (err < 0) {
err = -errno;
- log_error("error changing net interface name %s to %s: %m\n", ifr.ifr_name, ifr.ifr_newname);
+ goto out;
}
+
+ /* log temporary name */
+ print_kmsg("renamed network interface %s to %s\n", ifr.ifr_name, ifr.ifr_newname);
+
+ /* wait a maximum of 90 seconds for our target to become available */
+ strscpy(ifr.ifr_name, IFNAMSIZ, ifr.ifr_newname);
+ strscpy(ifr.ifr_newname, IFNAMSIZ, event->name);
+ loop = 90 * 20;
+ while (loop--) {
+ const struct timespec duration = { 0, 1000 * 1000 * 1000 / 20 };
+
+ log_debug("wait for netif '%s' to become free, loop=%i\n", event->name, (90 * 20) - loop);
+ nanosleep(&duration, NULL);
+
+ err = ioctl(sk, SIOCSIFNAME, &ifr);
+ if (err == 0) {
+ print_kmsg("renamed network interface %s to %s\n", ifr.ifr_name, ifr.ifr_newname);
+ break;
+ }
+ err = -errno;
+ if (err != -EEXIST)
+ break;
+ }
+
+out:
+ if (err < 0)
+ log_error("error changing net interface name %s to %s: %m\n", ifr.ifr_name, ifr.ifr_newname);
close(sk);
return err;
}