fs/overlayfs/export.c

285 static struct dentry *ovl_obtain_alias(struct super_block *sb,
312 	inode = ovl_get_inode(sb, &oip);
410 static struct dentry *ovl_lookup_real(struct super_block *sb,
417 static struct dentry *ovl_lookup_real_inode(struct super_block *sb,
421 	struct ovl_fs *ofs = OVL_FS(sb);
430 	inode = ovl_lookup_inode(sb, real, !layer->idx);
442 	if (!this && layer->idx && ovl_indexdir(sb) && !WARN_ON(!d_is_dir(real))) {
463 		this = ovl_lookup_real(sb, upper, &ofs->layers[0]);
482 static struct dentry *ovl_lookup_real_ancestor(struct super_block *sb,
490 		return dget(sb->s_root);
501 		ancestor = ovl_lookup_real_inode(sb, next, layer);
506 			ancestor = dget(sb->s_root);
535 static struct dentry *ovl_lookup_real(struct super_block *sb,
542 	connected = ovl_lookup_real_ancestor(sb, real, layer);
573 				connected = dget(sb->s_root);
608 				this = ovl_lookup_real_ancestor(sb, real,
637 static struct dentry *ovl_get_dentry(struct super_block *sb,
642 	struct ovl_fs *ofs = OVL_FS(sb);
651 		return ovl_obtain_alias(sb, upper, lowerpath, index);
661 	return ovl_lookup_real(sb, real, layer);
664 static struct dentry *ovl_upper_fh_to_d(struct super_block *sb,
667 	struct ovl_fs *ofs = OVL_FS(sb);
678 	dentry = ovl_get_dentry(sb, upper, NULL, NULL);
684 static struct dentry *ovl_lower_fh_to_d(struct super_block *sb,
687 	struct ovl_fs *ofs = OVL_FS(sb);
702 		inode = ovl_lookup_inode(sb, origin.dentry, false);
715 	if (ovl_indexdir(sb)) {
732 		dentry = ovl_get_dentry(sb, upper, NULL, NULL);
752 	dentry = ovl_get_dentry(sb, NULL, &origin, index);
787 static struct dentry *ovl_fh_to_dentry(struct super_block *sb, struct fid *fid,
807 		 ovl_upper_fh_to_d(sb, fh) :
808 		 ovl_lower_fh_to_d(sb, fh);
827 static struct dentry *ovl_fh_to_parent(struct super_block *sb, struct fid *fid,