108 lines
4.2 KiB
C
108 lines
4.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* bitops.h --- Bitmap frobbing code. The byte swapping routines are
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* also included here.
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*
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* Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*
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* i386 bitops operations taken from <asm/bitops.h>, Copyright 1992,
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* Linus Torvalds.
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*/
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#include <string.h>
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#include <strings.h>
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extern int ext2fs_set_bit(unsigned int nr,void * addr);
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extern int ext2fs_clear_bit(unsigned int nr, void * addr);
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extern int ext2fs_test_bit(unsigned int nr, const void * addr);
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extern __u16 ext2fs_swab16(__u16 val);
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extern __u32 ext2fs_swab32(__u32 val);
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#ifdef WORDS_BIGENDIAN
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#define ext2fs_cpu_to_le32(x) ext2fs_swab32((x))
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#define ext2fs_le32_to_cpu(x) ext2fs_swab32((x))
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#define ext2fs_cpu_to_le16(x) ext2fs_swab16((x))
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#define ext2fs_le16_to_cpu(x) ext2fs_swab16((x))
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#define ext2fs_cpu_to_be32(x) ((__u32)(x))
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#define ext2fs_be32_to_cpu(x) ((__u32)(x))
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#define ext2fs_cpu_to_be16(x) ((__u16)(x))
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#define ext2fs_be16_to_cpu(x) ((__u16)(x))
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#else
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#define ext2fs_cpu_to_le32(x) ((__u32)(x))
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#define ext2fs_le32_to_cpu(x) ((__u32)(x))
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#define ext2fs_cpu_to_le16(x) ((__u16)(x))
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#define ext2fs_le16_to_cpu(x) ((__u16)(x))
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#define ext2fs_cpu_to_be32(x) ext2fs_swab32((x))
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#define ext2fs_be32_to_cpu(x) ext2fs_swab32((x))
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#define ext2fs_cpu_to_be16(x) ext2fs_swab16((x))
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#define ext2fs_be16_to_cpu(x) ext2fs_swab16((x))
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#endif
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/*
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* EXT2FS bitmap manipulation routines.
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*/
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/* Support for sending warning messages from the inline subroutines */
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extern const char *ext2fs_block_string;
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extern const char *ext2fs_inode_string;
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extern const char *ext2fs_mark_string;
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extern const char *ext2fs_unmark_string;
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extern const char *ext2fs_test_string;
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extern void ext2fs_warn_bitmap(errcode_t errcode, unsigned long arg,
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const char *description);
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extern void ext2fs_warn_bitmap2(ext2fs_generic_bitmap bitmap,
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int code, unsigned long arg);
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extern int ext2fs_mark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block);
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extern int ext2fs_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
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blk_t block);
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extern int ext2fs_test_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block);
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extern int ext2fs_mark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode);
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extern int ext2fs_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
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ext2_ino_t inode);
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extern int ext2fs_test_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode);
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extern void ext2fs_fast_mark_block_bitmap(ext2fs_block_bitmap bitmap,
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blk_t block);
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extern void ext2fs_fast_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
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blk_t block);
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extern int ext2fs_fast_test_block_bitmap(ext2fs_block_bitmap bitmap,
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blk_t block);
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extern void ext2fs_fast_mark_inode_bitmap(ext2fs_inode_bitmap bitmap,
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ext2_ino_t inode);
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extern void ext2fs_fast_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
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ext2_ino_t inode);
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extern int ext2fs_fast_test_inode_bitmap(ext2fs_inode_bitmap bitmap,
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ext2_ino_t inode);
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extern blk_t ext2fs_get_block_bitmap_start(ext2fs_block_bitmap bitmap);
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extern ext2_ino_t ext2fs_get_inode_bitmap_start(ext2fs_inode_bitmap bitmap);
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extern blk_t ext2fs_get_block_bitmap_end(ext2fs_block_bitmap bitmap);
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extern ext2_ino_t ext2fs_get_inode_bitmap_end(ext2fs_inode_bitmap bitmap);
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extern void ext2fs_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
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blk_t block, int num);
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extern void ext2fs_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
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blk_t block, int num);
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extern int ext2fs_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
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blk_t block, int num);
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extern void ext2fs_fast_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
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blk_t block, int num);
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extern void ext2fs_fast_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
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blk_t block, int num);
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extern int ext2fs_fast_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
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blk_t block, int num);
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extern void ext2fs_set_bitmap_padding(ext2fs_generic_bitmap map);
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/* These two routines moved to gen_bitmap.c */
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extern int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap,
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__u32 bitno);
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extern int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap,
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blk_t bitno);
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