/* * cmp_bitmaps.c --- routines to compare inode and block bitmaps. * * Copyright (C) 1995 Theodore Ts'o. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% */ #include <stdio.h> #include <string.h> #if HAVE_UNISTD_H #include <unistd.h> #endif #include <fcntl.h> #include <time.h> #if HAVE_SYS_STAT_H #include <sys/stat.h> #endif #if HAVE_SYS_TYPES_H #include <sys/types.h> #endif #include "ext2_fs.h" #include "ext2fs.h" errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, ext2fs_block_bitmap bm2) { blk_t i; EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_BLOCK_BITMAP); EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_BLOCK_BITMAP); if ((bm1->start != bm2->start) || (bm1->end != bm2->end) || (memcmp(bm1->bitmap, bm2->bitmap, (size_t) (bm1->end - bm1->start)/8))) return EXT2_ET_NEQ_BLOCK_BITMAP; for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++) if (ext2fs_fast_test_block_bitmap(bm1, i) != ext2fs_fast_test_block_bitmap(bm2, i)) return EXT2_ET_NEQ_BLOCK_BITMAP; return 0; } errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, ext2fs_inode_bitmap bm2) { ext2_ino_t i; EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_INODE_BITMAP); EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_INODE_BITMAP); if ((bm1->start != bm2->start) || (bm1->end != bm2->end) || (memcmp(bm1->bitmap, bm2->bitmap, (size_t) (bm1->end - bm1->start)/8))) return EXT2_ET_NEQ_INODE_BITMAP; for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++) if (ext2fs_fast_test_inode_bitmap(bm1, i) != ext2fs_fast_test_inode_bitmap(bm2, i)) return EXT2_ET_NEQ_INODE_BITMAP; return 0; }