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write changed network interface names to the kernel log
author
Kay Sievers
<kay.sievers@vrfy.org>
Thu, 2 Aug 2007 21:54:10 +0000
(23:54 +0200)
committer
Kay Sievers
<kay.sievers@vrfy.org>
Thu, 2 Aug 2007 21:54:10 +0000
(23:54 +0200)
udev_device.c
patch
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diff --git
a/udev_device.c
b/udev_device.c
index bbf7963afce78897f38d88eca4a2b23efade9853..23ba313db3098e85cc91f50a38c678a6e86e6381 100644
(file)
--- a/
udev_device.c
+++ b/
udev_device.c
@@
-78,6
+78,26
@@
dev_t udev_device_get_devt(struct udevice *udev)
return makedev(0, 0);
}
return makedev(0, 0);
}
+static void kernel_log(struct ifreq ifr)
+{
+ int klog;
+ FILE *f;
+
+ klog = open("/dev/kmsg", O_WRONLY);
+ if (klog < 0)
+ return;
+
+ f = fdopen(klog, "w");
+ if (f == NULL) {
+ close(klog);
+ return;
+ }
+
+ fprintf(f, "<6>udev: renamed network interface %s to %s\n",
+ ifr.ifr_name, ifr.ifr_newname);
+ fclose(f);
+}
+
static int rename_netif(struct udevice *udev)
{
int sk;
static int rename_netif(struct udevice *udev)
{
int sk;
@@
-98,7
+118,9
@@
static int rename_netif(struct udevice *udev)
strlcpy(ifr.ifr_name, udev->dev->kernel, IFNAMSIZ);
strlcpy(ifr.ifr_newname, udev->name, IFNAMSIZ);
retval = ioctl(sk, SIOCSIFNAME, &ifr);
strlcpy(ifr.ifr_name, udev->dev->kernel, IFNAMSIZ);
strlcpy(ifr.ifr_newname, udev->name, IFNAMSIZ);
retval = ioctl(sk, SIOCSIFNAME, &ifr);
- if (retval != 0) {
+ if (retval == 0)
+ kernel_log(ifr);
+ else {
int loop;
/* see if the destination interface name already exists */
int loop;
/* see if the destination interface name already exists */
@@
-122,8
+144,10
@@
static int rename_netif(struct udevice *udev)
loop = 30 * 20;
while (loop--) {
retval = ioctl(sk, SIOCSIFNAME, &ifr);
loop = 30 * 20;
while (loop--) {
retval = ioctl(sk, SIOCSIFNAME, &ifr);
- if (retval == 0)
+ if (retval == 0) {
+ kernel_log(ifr);
break;
break;
+ }
if (errno != EEXIST) {
err("error changing net interface name %s to %s: %s",
if (errno != EEXIST) {
err("error changing net interface name %s to %s: %s",