/* * bitops.h --- Bitmap frobbing code. The byte swapping routines are * also included here. * * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% * * i386 bitops operations taken from <asm/bitops.h>, Copyright 1992, * Linus Torvalds. */ #include <string.h> #include <strings.h> extern int ext2fs_set_bit(unsigned int nr,void * addr); extern int ext2fs_clear_bit(unsigned int nr, void * addr); extern int ext2fs_test_bit(unsigned int nr, const void * addr); extern __u16 ext2fs_swab16(__u16 val); extern __u32 ext2fs_swab32(__u32 val); #ifdef WORDS_BIGENDIAN #define ext2fs_cpu_to_le32(x) ext2fs_swab32((x)) #define ext2fs_le32_to_cpu(x) ext2fs_swab32((x)) #define ext2fs_cpu_to_le16(x) ext2fs_swab16((x)) #define ext2fs_le16_to_cpu(x) ext2fs_swab16((x)) #define ext2fs_cpu_to_be32(x) ((__u32)(x)) #define ext2fs_be32_to_cpu(x) ((__u32)(x)) #define ext2fs_cpu_to_be16(x) ((__u16)(x)) #define ext2fs_be16_to_cpu(x) ((__u16)(x)) #else #define ext2fs_cpu_to_le32(x) ((__u32)(x)) #define ext2fs_le32_to_cpu(x) ((__u32)(x)) #define ext2fs_cpu_to_le16(x) ((__u16)(x)) #define ext2fs_le16_to_cpu(x) ((__u16)(x)) #define ext2fs_cpu_to_be32(x) ext2fs_swab32((x)) #define ext2fs_be32_to_cpu(x) ext2fs_swab32((x)) #define ext2fs_cpu_to_be16(x) ext2fs_swab16((x)) #define ext2fs_be16_to_cpu(x) ext2fs_swab16((x)) #endif /* * EXT2FS bitmap manipulation routines. */ /* Support for sending warning messages from the inline subroutines */ extern const char *ext2fs_block_string; extern const char *ext2fs_inode_string; extern const char *ext2fs_mark_string; extern const char *ext2fs_unmark_string; extern const char *ext2fs_test_string; extern void ext2fs_warn_bitmap(errcode_t errcode, unsigned long arg, const char *description); extern void ext2fs_warn_bitmap2(ext2fs_generic_bitmap bitmap, int code, unsigned long arg); extern int ext2fs_mark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); extern int ext2fs_unmark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); extern int ext2fs_test_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); extern int ext2fs_mark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); extern int ext2fs_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); extern int ext2fs_test_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); extern void ext2fs_fast_mark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); extern void ext2fs_fast_unmark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); extern int ext2fs_fast_test_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); extern void ext2fs_fast_mark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); extern void ext2fs_fast_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); extern int ext2fs_fast_test_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); extern blk_t ext2fs_get_block_bitmap_start(ext2fs_block_bitmap bitmap); extern ext2_ino_t ext2fs_get_inode_bitmap_start(ext2fs_inode_bitmap bitmap); extern blk_t ext2fs_get_block_bitmap_end(ext2fs_block_bitmap bitmap); extern ext2_ino_t ext2fs_get_inode_bitmap_end(ext2fs_inode_bitmap bitmap); extern void ext2fs_mark_block_bitmap_range(ext2fs_block_bitmap bitmap, blk_t block, int num); extern void ext2fs_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap, blk_t block, int num); extern int ext2fs_test_block_bitmap_range(ext2fs_block_bitmap bitmap, blk_t block, int num); extern void ext2fs_fast_mark_block_bitmap_range(ext2fs_block_bitmap bitmap, blk_t block, int num); extern void ext2fs_fast_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap, blk_t block, int num); extern int ext2fs_fast_test_block_bitmap_range(ext2fs_block_bitmap bitmap, blk_t block, int num); extern void ext2fs_set_bitmap_padding(ext2fs_generic_bitmap map); /* These two routines moved to gen_bitmap.c */ extern int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap, __u32 bitno); extern int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap, blk_t bitno);