77 lines
1.9 KiB
Diff
77 lines
1.9 KiB
Diff
|
--- a/fs/overlayfs/overlayfs.c
|
||
|
|
+++ b/fs/overlayfs/overlayfs.c
|
||
|
|
@@ -1700,37 +1700,56 @@ static int ovl_check_empty_dir(struct de
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
-static int ovl_unlink_whiteout(void *buf, const char *name, int namelen,
|
||
|
|
- loff_t offset, u64 ino, unsigned int d_type)
|
||
|
|
+static int ovl_fill_links(void *buf, const char *name, int namelen,
|
||
|
|
+ loff_t offset, u64 ino, unsigned int d_type)
|
||
|
|
{
|
||
|
|
struct ovl_readdir_data *rdd = buf;
|
||
|
|
+ struct ovl_cache_entry *p;
|
||
|
|
|
||
|
|
- rdd->count++;
|
||
|
|
- /* check d_type to filter out "." and ".." */
|
||
|
|
- if (d_type == DT_LNK) {
|
||
|
|
- struct dentry *dentry;
|
||
|
|
+ if (d_type != DT_LNK)
|
||
|
|
+ return 0;
|
||
|
|
|
||
|
|
- dentry = lookup_one_len(name, rdd->dir, namelen);
|
||
|
|
- if (IS_ERR(dentry)) {
|
||
|
|
- rdd->err = PTR_ERR(dentry);
|
||
|
|
- } else {
|
||
|
|
- rdd->err = vfs_unlink(rdd->dir->d_inode, dentry);
|
||
|
|
- dput(dentry);
|
||
|
|
- }
|
||
|
|
- }
|
||
|
|
+ p = ovl_cache_entry_new(name, namelen, ino, d_type);
|
||
|
|
+ if (!p)
|
||
|
|
+ return -ENOMEM;
|
||
|
|
|
||
|
|
- return rdd->err;
|
||
|
|
+ list_add(&p->l_node, rdd->list);
|
||
|
|
+ return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ovl_remove_whiteouts(struct dentry *dentry)
|
||
|
|
{
|
||
|
|
struct path upperpath;
|
||
|
|
- struct ovl_readdir_data rdd = { .list = NULL };
|
||
|
|
+ LIST_HEAD(list);
|
||
|
|
+ struct ovl_readdir_data rdd = { .list = &list };
|
||
|
|
+ struct ovl_cache_entry *p, *t;
|
||
|
|
+ int ret;
|
||
|
|
|
||
|
|
ovl_path_upper(dentry, &upperpath);
|
||
|
|
rdd.dir = upperpath.dentry;
|
||
|
|
|
||
|
|
- return ovl_dir_read(&upperpath, &rdd, ovl_unlink_whiteout);
|
||
|
|
+ ret = ovl_dir_read(&upperpath, &rdd, ovl_fill_links);
|
||
|
|
+
|
||
|
|
+ mutex_lock(&rdd.dir->d_inode->i_mutex);
|
||
|
|
+ list_for_each_entry_safe(p, t, &list, l_node) {
|
||
|
|
+ struct dentry *dentry;
|
||
|
|
+
|
||
|
|
+ if (!ret) {
|
||
|
|
+ dentry = lookup_one_len(p->name, rdd.dir, p->len);
|
||
|
|
+ if (IS_ERR(dentry)) {
|
||
|
|
+ ret = PTR_ERR(dentry);
|
||
|
|
+ } else {
|
||
|
|
+ ret = vfs_unlink(rdd.dir->d_inode, dentry);
|
||
|
|
+ dput(dentry);
|
||
|
|
+ }
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ list_del(&p->l_node);
|
||
|
|
+ kfree(p);
|
||
|
|
+ }
|
||
|
|
+ mutex_unlock(&rdd.dir->d_inode->i_mutex);
|
||
|
|
+
|
||
|
|
+ return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ovl_rmdir(struct inode *dir, struct dentry *dentry)
|