linux/fs/erofs/namei.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2017-2018 HUAWEI, Inc.
 *             https://www.huawei.com/
 * Copyright (C) 2022, Alibaba Cloud
 */
#include "xattr.h"
#include <trace/events/erofs.h>

struct erofs_qstr { … };

/* based on the end of qn is accurate and it must have the trailing '\0' */
static inline int erofs_dirnamecmp(const struct erofs_qstr *qn,
				   const struct erofs_qstr *qd,
				   unsigned int *matched)
{ … }

#define nameoff_from_disk(off, sz) …

static struct erofs_dirent *find_target_dirent(struct erofs_qstr *name,
					       u8 *data,
					       unsigned int dirblksize,
					       const int ndirents)
{ … }

static void *erofs_find_target_block(struct erofs_buf *target,
		struct inode *dir, struct erofs_qstr *name, int *_ndirents)
{ … }

int erofs_namei(struct inode *dir, const struct qstr *name, erofs_nid_t *nid,
		unsigned int *d_type)
{ … }

static struct dentry *erofs_lookup(struct inode *dir, struct dentry *dentry,
				   unsigned int flags)
{ … }

const struct inode_operations erofs_dir_iops = …;