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do not remove device nodes of active kernel devices

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We do no longer delete the primary device node while handling "remove"
events if the same kernel device is already re-created in the meantime.
This prevents the asynchronously running udev from removing and re-creating
primary device nodes for active devices.
This commit is contained in:
Kay Sievers 2010-01-13 13:18:14 +01:00
parent 6f1892dc7a
commit 889dd1061c
1 changed files with 11 additions and 5 deletions
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16
udev/udev-node.c
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@ -422,10 +422,11 @@ int udev_node_remove(struct udev_device *dev)
const char *devnode;
char partitionname[UTIL_PATH_SIZE];
struct stat stats;
struct udev_device *dev_check;
int err = 0;
int num;
/* remove,update symlinks, remove symlinks from name index */
/* remove/update symlinks, remove symlinks from name index */
udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev))
link_update(dev, udev_list_entry_get_name(list_entry), 0);
@ -441,10 +442,15 @@ int udev_node_remove(struct udev_device *dev)
return -1;
}
info(udev, "removing device node '%s'\n", devnode);
err = util_unlink_secure(udev, devnode);
if (err)
return err;
dev_check = udev_device_new_from_syspath(udev, udev_device_get_syspath(dev));
if (dev_check != NULL && stats.st_rdev == udev_device_get_devnum(dev_check)) {
/* do not remove device node if the same sys-device is re-created in the meantime */
info(udev, "keeping device node '%s'\n", devnode);
} else {
info(udev, "removing device node '%s'\n", devnode);
err = util_unlink_secure(udev, devnode);
}
udev_device_unref(dev_check);
num = udev_device_get_num_fake_partitions(dev);
if (num > 0) {