73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
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/* vi: set sw=4 ts=4: */
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/*
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* cmp_bitmaps.c --- routines to compare inode and block bitmaps.
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*
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* Copyright (C) 1995 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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#include <stdio.h>
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#include <string.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <fcntl.h>
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#include <time.h>
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#if HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include "ext2_fs.h"
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#include "ext2fs.h"
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errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
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ext2fs_block_bitmap bm2)
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{
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blk_t i;
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EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_BLOCK_BITMAP);
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EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_BLOCK_BITMAP);
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if ((bm1->start != bm2->start) ||
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(bm1->end != bm2->end) ||
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(memcmp(bm1->bitmap, bm2->bitmap,
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(size_t) (bm1->end - bm1->start)/8)))
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return EXT2_ET_NEQ_BLOCK_BITMAP;
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for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
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if (ext2fs_fast_test_block_bitmap(bm1, i) !=
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ext2fs_fast_test_block_bitmap(bm2, i))
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return EXT2_ET_NEQ_BLOCK_BITMAP;
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return 0;
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}
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errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
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ext2fs_inode_bitmap bm2)
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{
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ext2_ino_t i;
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EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_INODE_BITMAP);
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EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_INODE_BITMAP);
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if ((bm1->start != bm2->start) ||
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(bm1->end != bm2->end) ||
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(memcmp(bm1->bitmap, bm2->bitmap,
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(size_t) (bm1->end - bm1->start)/8)))
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return EXT2_ET_NEQ_INODE_BITMAP;
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for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
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if (ext2fs_fast_test_inode_bitmap(bm1, i) !=
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ext2fs_fast_test_inode_bitmap(bm2, i))
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return EXT2_ET_NEQ_INODE_BITMAP;
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return 0;
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}
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