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| author |   Andoni Zarate <aiz@arteche.es> | 2021-04-23 12:32:47 +0200 |
|---|---|---|
| committer |   Anthony G. Basile <blueness@gentoo.org> | 2021-08-23 12:03:05 -0400 |
| commit | 841cd0ce3f6b97fbf77e12a6018a2c4a633eba89 (patch) | |
| tree | 23a31d00876158d2b2cb41e65038ec475cc0ba5d | |
| parent | Makefile: flag -n of ln is not POSIX (diff) | |
| download | eudev-841cd0ce3f6b97fbf77e12a6018a2c4a633eba89.tar.gz eudev-841cd0ce3f6b97fbf77e12a6018a2c4a633eba89.tar.bz2 eudev-841cd0ce3f6b97fbf77e12a6018a2c4a633eba89.zip | |
On collision rename my name to a temporal one letting others got my name...
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
| -rw-r--r-- | src/udev/udev-event.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c index 4120c04f2..64cc69cbc 100644 --- a/src/udev/udev-event.c +++ b/src/udev/udev-event.c @@ -826,6 +826,7 @@ static int rename_netif_dev_fromname_toname(struct udev_device *dev,const char * #ifdef ENABLE_RULE_GENERATOR int loop; + struct ifreq ifr_tmp; if (r == 0) { log_info("renamed network interface %s to %s\n", ifr.ifr_name, ifr.ifr_newname); @@ -835,6 +836,16 @@ static int rename_netif_dev_fromname_toname(struct udev_device *dev,const char * log_debug("collision on rename of network interface %s to %s , retrying until timeout\n", ifr.ifr_name, ifr.ifr_newname); + /* there has been a collision so rename my name to a temporal name, letting other one to rename to my name, freeying its name... */ + memzero(&ifr_tmp, sizeof(struct ifreq)); + strscpy(ifr_tmp.ifr_name, IFNAMSIZ, oldname); + snprintf(ifr_tmp.ifr_newname, IFNAMSIZ, "rename_%s", oldname); + r = ioctl(sk, SIOCSIFNAME, &ifr_tmp); + log_info("Temporarily renamed network interface %s to %s\n", ifr_tmp.ifr_name, ifr_tmp.ifr_newname); + + /* we have changed our name so in subsequents tries i should rename my temporal name to the wanted one */ + strscpy(ifr.ifr_name, IFNAMSIZ, ifr_tmp.ifr_newname); + r = -errno; if (r != -EEXIST) goto out; |