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fix udev_node_update_old_links() logic

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No need to check if links that still belong to us, need to be updated.
This commit is contained in:
Kay Sievers 2008-11-01 20:05:41 +01:00
parent 00f98bd2b3
commit 5755d586e1
1 changed files with 23 additions and 16 deletions
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39
udev/udev-node.c
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@ -52,13 +52,13 @@ static int name_index(struct udev *udev, const char *devpath, const char *name,
util_strlcat(filename, device, sizeof(filename));
if (add) {
info(udev, "creating index: '%s'\n", filename);
dbg(udev, "creating index: '%s'\n", filename);
util_create_path(udev, filename);
fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0644);
if (fd > 0)
close(fd);
} else {
info(udev, "removing index: '%s'\n", filename);
dbg(udev, "removing index: '%s'\n", filename);
unlink(filename);
util_delete_path(udev, filename);
}
@ -185,7 +185,7 @@ static int node_symlink(struct udev *udev, const char *node, const char *slink)
} else if (S_ISLNK(stats.st_mode)) {
char buf[UTIL_PATH_SIZE];
info(udev, "found existing symlink '%s'\n", slink);
dbg(udev, "found existing symlink '%s'\n", slink);
len = readlink(slink, buf, sizeof(buf));
if (len > 0) {
buf[len] = '\0';
@ -241,11 +241,11 @@ static int name_index_get_devices(struct udev *udev, const char *name, struct ud
util_path_encode(&dirname[start], sizeof(dirname) - start);
dir = opendir(dirname);
if (dir == NULL) {
info(udev, "no index directory '%s': %m\n", dirname);
dbg(udev, "no index directory '%s': %m\n", dirname);
count = -1;
goto out;
}
info(udev, "found index directory '%s'\n", dirname);
dbg(udev, "found index directory '%s'\n", dirname);
while (1) {
struct dirent *ent;
@ -278,11 +278,12 @@ static int update_link(struct udev_device *dev, const char *slink, int test)
int priority = 0;
int rc = 0;
info(udev, "update symlink '%s' of '%s'\n", slink, udev_device_get_syspath(dev));
dbg(udev, "update symlink '%s' of '%s'\n", slink, udev_device_get_syspath(dev));
udev_list_init(&dev_list);
count = name_index_get_devices(udev, slink, &dev_list);
info(udev, "found %i devices with name '%s'\n", count, slink);
if (count > 1)
info(udev, "found %i devices with name '%s'\n", count, slink);
/* if we don't have a reference, delete it */
if (count <= 0) {
@ -302,12 +303,12 @@ static int update_link(struct udev_device *dev, const char *slink, int test)
const char *devnode;
syspath = udev_list_entry_get_name(dev_entry);
info(udev, "found '%s' for '%s'\n", syspath, slink);
dbg(udev, "found '%s' for '%s'\n", syspath, slink);
/* did we find ourself? we win, if we have the same priority */
if (strcmp(udev_device_get_syspath(dev), syspath) == 0) {
info(udev, "compare (our own) priority of '%s' %i >= %i\n",
udev_device_get_devpath(dev), udev_device_get_devlink_priority(dev), priority);
dbg(udev, "compare (our own) priority of '%s' %i >= %i\n",
udev_device_get_devpath(dev), udev_device_get_devlink_priority(dev), priority);
if (strcmp(udev_device_get_devnode(dev), slink) == 0) {
info(udev, "'%s' is our device node, database inconsistent, skip link update\n",
udev_device_get_devnode(dev));
@ -328,10 +329,10 @@ static int update_link(struct udev_device *dev, const char *slink, int test)
info(udev, "'%s' is a device node of '%s', skip link update\n",
devnode, syspath);
} else {
info(udev, "compare priority of '%s' %i > %i\n",
udev_device_get_devpath(dev_db),
udev_device_get_devlink_priority(dev_db),
priority);
dbg(udev, "compare priority of '%s' %i > %i\n",
udev_device_get_devpath(dev_db),
udev_device_get_devlink_priority(dev_db),
priority);
if (target[0] == '\0' || udev_device_get_devlink_priority(dev_db) > priority) {
priority = udev_device_get_devlink_priority(dev_db);
util_strlcpy(target, devnode, sizeof(target));
@ -367,12 +368,18 @@ void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev
/* update possible left-over symlinks */
udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev_old)) {
struct udev_list_entry *list_entry_current;
int found;
found = 0;
udev_list_entry_foreach(list_entry_current, udev_device_get_devlinks_list_entry(dev)) {
if (strcmp(udev_list_entry_get_name(list_entry_current),
udev_list_entry_get_name(list_entry)) == 0)
continue;
udev_list_entry_get_name(list_entry)) == 0) {
found = 1;
break;
}
}
if (found)
continue;
/* link does no longer belong to this device */
info(udev, "update old symlink '%s' no longer belonging to '%s'\n",
udev_list_entry_get_name(list_entry), udev_device_get_devpath(dev));