18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * collate.h - Defines for NTFS kernel collation handling. Part of the 48c2ecf20Sopenharmony_ci * Linux-NTFS project. 58c2ecf20Sopenharmony_ci * 68c2ecf20Sopenharmony_ci * Copyright (c) 2004 Anton Altaparmakov 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#ifndef _LINUX_NTFS_COLLATE_H 108c2ecf20Sopenharmony_ci#define _LINUX_NTFS_COLLATE_H 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci#include "types.h" 138c2ecf20Sopenharmony_ci#include "volume.h" 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_cistatic inline bool ntfs_is_collation_rule_supported(COLLATION_RULE cr) { 168c2ecf20Sopenharmony_ci int i; 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci /* 198c2ecf20Sopenharmony_ci * FIXME: At the moment we only support COLLATION_BINARY and 208c2ecf20Sopenharmony_ci * COLLATION_NTOFS_ULONG, so we return false for everything else for 218c2ecf20Sopenharmony_ci * now. 228c2ecf20Sopenharmony_ci */ 238c2ecf20Sopenharmony_ci if (unlikely(cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG)) 248c2ecf20Sopenharmony_ci return false; 258c2ecf20Sopenharmony_ci i = le32_to_cpu(cr); 268c2ecf20Sopenharmony_ci if (likely(((i >= 0) && (i <= 0x02)) || 278c2ecf20Sopenharmony_ci ((i >= 0x10) && (i <= 0x13)))) 288c2ecf20Sopenharmony_ci return true; 298c2ecf20Sopenharmony_ci return false; 308c2ecf20Sopenharmony_ci} 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ciextern int ntfs_collate(ntfs_volume *vol, COLLATION_RULE cr, 338c2ecf20Sopenharmony_ci const void *data1, const int data1_len, 348c2ecf20Sopenharmony_ci const void *data2, const int data2_len); 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_ci#endif /* _LINUX_NTFS_COLLATE_H */ 37