linux/fs/ntfs3/upcase.c

// SPDX-License-Identifier: GPL-2.0
/*
 *
 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
 *
 */

#include <linux/kernel.h>
#include <linux/types.h>

#include "ntfs_fs.h"

static inline u16 upcase_unicode_char(const u16 *upcase, u16 chr)
{ … }

/*
 * ntfs_cmp_names
 *
 * Thanks Kari Argillander <[email protected]> for idea and implementation 'bothcase'
 *
 * Straight way to compare names:
 * - Case insensitive
 * - If name equals and 'bothcases' then
 * - Case sensitive
 * 'Straight way' code scans input names twice in worst case.
 * Optimized code scans input names only once.
 */
int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2,
		   const u16 *upcase, bool bothcase)
{ … }

int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2,
		       const u16 *upcase, bool bothcase)
{ … }

/* Helper function for ntfs_d_hash. */
unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase,
			      unsigned long hash)
{ … }