X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Fudev-node.c;h=71488c93ad00f4ffd7303f583f804c153e568600;hp=5e791ffb6c50753783018240f6d13866f845868d;hb=b3e44c5291f60c0d70af941514ab58c8d31f14a7;hpb=51f43b53293c4cc64c2a55598491c6cbf27b6bd5

diff --git a/udev/udev-node.c b/udev/udev-node.c
index 5e791ffb6..71488c93a 100644
--- a/udev/udev-node.c
+++ b/udev/udev-node.c
@@ -52,7 +52,9 @@ int udev_node_mknod(struct udev_device *dev, const char *file, mode_t mode, uid_
 	if (lstat(file, &stats) == 0) {
 		if (((stats.st_mode & S_IFMT) == (mode & S_IFMT)) && (stats.st_rdev == devnum)) {
 			info(udev, "preserve file '%s', because it has correct dev_t\n", file);
-			if (stats.st_mode != mode || stats.st_uid != uid || stats.st_gid != gid) {
+			if ((stats.st_mode & 0777) != (mode & 0777) || stats.st_uid != uid || stats.st_gid != gid) {
+				/* preserve 'sticky' bit, if already set */
+				mode |= stats.st_mode & 01000;
 				info(udev, "set permissions %s, %#o, uid=%u, gid=%u\n", file, mode, uid, gid);
 				chmod(file, mode);
 				chown(file, uid, gid);
@@ -386,7 +388,7 @@ int udev_node_add(struct udev_device *dev, mode_t mode, uid_t uid, gid_t gid)
 
 	/* create/update symlinks, add symlinks to name index */
 	udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
-		if (udev_list_entry_get_flags(list_entry))
+		if (udev_list_entry_get_num(list_entry))
 			/* simple unmanaged link name */
 			node_symlink(udev, udev_device_get_devnode(dev), udev_list_entry_get_name(list_entry));
 		else
@@ -425,6 +427,11 @@ int udev_node_remove(struct udev_device *dev)
 		goto out;
 	}
 
+	if (stats.st_mode & 01000) {
+		info(udev, "device node '%s' has sticky bit set, skip removal\n", devnode);
+		goto out;
+	}
+
 	dev_check = udev_device_new_from_syspath(udev, udev_device_get_syspath(dev));
 	if (dev_check != NULL) {
 		/* do not remove device node if the same sys-device is re-created in the meantime */