10b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o/* 20b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * e2freefrag - report filesystem free-space fragmentation 30b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * 40b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * Copyright (C) 2009 Sun Microsystems, Inc. 50b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * 60b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * Author: Rupesh Thakare <rupesh@sun.com> 70b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * Andreas Dilger <adilger@sun.com> 80b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * 90b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * %Begin-Header% 100b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * This file may be redistributed under the terms of the GNU Public 110b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * License version 2. 120b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * %End-Header% 130b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o */ 14d1154eb460efe588eaed3d439c1caaca149fa362Theodore Ts'o#include "config.h" 150b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#include <stdio.h> 160b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#ifdef HAVE_UNISTD_H 170b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#include <unistd.h> 180b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#endif 190b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#ifdef HAVE_STDLIB_H 200b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#include <stdlib.h> 210b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#endif 220b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#ifdef HAVE_GETOPT_H 230b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#include <getopt.h> 240b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#else 250b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'oextern char *optarg; 260b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'oextern int optind; 270b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#endif 280b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 290b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#include "ext2fs/ext2_fs.h" 300b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#include "ext2fs/ext2fs.h" 310b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o#include "e2freefrag.h" 320b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 333cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic void usage(const char *prog) 340b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 350b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o fprintf(stderr, "usage: %s [-c chunksize in kb] [-h] " 360b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o "device_name\n", prog); 375e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#ifndef DEBUGFS 380b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o exit(1); 395e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#endif 400b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 410b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 420b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'ostatic int ul_log2(unsigned long arg) 430b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 440b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o int l = 0; 450b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 460b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o arg >>= 1; 470b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o while (arg) { 480b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o l++; 490b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o arg >>= 1; 500b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 510b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o return l; 520b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 530b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 543cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic void init_chunk_info(ext2_filsys fs, struct chunk_info *info) 550b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 560b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o int i; 570b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 580b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o info->blocksize_bits = ul_log2((unsigned long)fs->blocksize); 59cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o if (info->chunkbytes) { 60cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o info->chunkbits = ul_log2(info->chunkbytes); 61cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o info->blks_in_chunk = info->chunkbytes >> info->blocksize_bits; 62cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o } else { 63cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o info->chunkbits = ul_log2(DEFAULT_CHUNKSIZE); 64cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o info->blks_in_chunk = DEFAULT_CHUNKSIZE >> info->blocksize_bits; 65cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o } 660b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 670b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o info->min = ~0UL; 680b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o info->max = info->avg = 0; 690b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o info->real_free_chunks = 0; 700b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 71ad751f11ecab50ec78a4b50ae95af3e7b2c4f06aAndreas Dilger for (i = 0; i < MAX_HIST; i++) { 72ad751f11ecab50ec78a4b50ae95af3e7b2c4f06aAndreas Dilger info->histogram.fc_chunks[i] = 0; 73ad751f11ecab50ec78a4b50ae95af3e7b2c4f06aAndreas Dilger info->histogram.fc_blocks[i] = 0; 74ad751f11ecab50ec78a4b50ae95af3e7b2c4f06aAndreas Dilger } 750b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 760b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 773cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic void update_chunk_stats(struct chunk_info *info, 783cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o unsigned long chunk_size) 791e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o{ 803cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o unsigned long idx; 811e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o 823cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o idx = ul_log2(chunk_size) + 1; 833cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o if (idx >= MAX_HIST) 843cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o idx = MAX_HIST-1; 853cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o info->histogram.fc_chunks[idx]++; 863cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o info->histogram.fc_blocks[idx] += chunk_size; 871e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o 881e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o if (chunk_size > info->max) 891e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o info->max = chunk_size; 901e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o if (chunk_size < info->min) 911e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o info->min = chunk_size; 921e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o info->avg += chunk_size; 931e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o info->real_free_chunks++; 941e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o} 951e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o 963cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info) 970b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 984efbac6fed75c29d3d5f1b676b932754653a2ac5Valerie Aurora Henson unsigned long long blocks_count = ext2fs_blocks_count(fs->super); 990b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o unsigned long long chunks = (blocks_count + info->blks_in_chunk) >> 1000b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o (info->chunkbits - info->blocksize_bits); 1010b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o unsigned long long chunk_num; 1020b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o unsigned long last_chunk_size = 0; 1030b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o unsigned long long chunk_start_blk = 0; 1043e343b8d9af349301a2acd6b4328fb5663deb60cTheodore Ts'o int used; 1050b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1060b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o for (chunk_num = 0; chunk_num < chunks; chunk_num++) { 1070b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o unsigned long long blk, num_blks; 1080b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o int chunk_free; 1090b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1100b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o /* Last chunk may be smaller */ 1110b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (chunk_start_blk + info->blks_in_chunk > blocks_count) 1120b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o num_blks = blocks_count - chunk_start_blk; 1130b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o else 1140b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o num_blks = info->blks_in_chunk; 1150b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1160b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o chunk_free = 0; 1170b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1180b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o /* Initialize starting block for first chunk correctly else 1190b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * there is a segfault when blocksize = 1024 in which case 1200b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o * block_map->start = 1 */ 1213e343b8d9af349301a2acd6b4328fb5663deb60cTheodore Ts'o for (blk = 0; blk < num_blks; blk++, chunk_start_blk++) { 1223e343b8d9af349301a2acd6b4328fb5663deb60cTheodore Ts'o if (chunk_num == 0 && blk == 0) { 1233e343b8d9af349301a2acd6b4328fb5663deb60cTheodore Ts'o blk = fs->super->s_first_data_block; 1243e343b8d9af349301a2acd6b4328fb5663deb60cTheodore Ts'o chunk_start_blk = blk; 1253e343b8d9af349301a2acd6b4328fb5663deb60cTheodore Ts'o } 1263c041a514cf65c65e102ff22e0dee2a3fa724873Valerie Aurora Henson used = ext2fs_fast_test_block_bitmap2(fs->block_map, 127554bc091b7e8a24acc737ab68bc00d2e04354653Robin Dong chunk_start_blk >> fs->cluster_ratio_bits); 1280b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (!used) { 1290b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o last_chunk_size++; 1300b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o chunk_free++; 1310b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 1320b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1330b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (used && last_chunk_size != 0) { 1341e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o update_chunk_stats(info, last_chunk_size); 1350b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o last_chunk_size = 0; 1360b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 1370b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 1380b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1390b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (chunk_free == info->blks_in_chunk) 1400b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o info->free_chunks++; 1410b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 1421e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o if (last_chunk_size != 0) 1431e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o update_chunk_stats(info, last_chunk_size); 1440b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 1450b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1463cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic errcode_t get_chunk_info(ext2_filsys fs, struct chunk_info *info, 1473cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o FILE *f) 1480b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 1490b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o unsigned long total_chunks; 1503cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o const char *unitp = "KMGTPEZY"; 1510b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o int units = 10; 152cf5301d7f2c3bbed3d26600335102414cbf0c4baAndreas Dilger unsigned long start = 0, end; 1530b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o int i, retval = 0; 1540b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1550b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o scan_block_bitmap(fs, info); 1560b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1575e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "Total blocks: %llu\nFree blocks: %u (%0.1f%%)\n", 1585e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o ext2fs_blocks_count(fs->super), fs->super->s_free_blocks_count, 1595e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o (double)fs->super->s_free_blocks_count * 100 / 1605e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o ext2fs_blocks_count(fs->super)); 1610b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 162cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o if (info->chunkbytes) { 1635e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "\nChunksize: %lu bytes (%u blocks)\n", 1645e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o info->chunkbytes, info->blks_in_chunk); 1654efbac6fed75c29d3d5f1b676b932754653a2ac5Valerie Aurora Henson total_chunks = (ext2fs_blocks_count(fs->super) + 166cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o info->blks_in_chunk) >> 167cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o (info->chunkbits - info->blocksize_bits); 1685e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "Total chunks: %lu\nFree chunks: %lu (%0.1f%%)\n", 1695e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o total_chunks, info->free_chunks, 1705e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o (double)info->free_chunks * 100 / total_chunks); 171cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o } 1720b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1730b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o /* Display chunk information in KB */ 1740b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (info->real_free_chunks) { 175d05508956734d55f7ee286085a1f6570d11848b7Theodore Ts'o unsigned int scale = fs->blocksize >> 10; 176d05508956734d55f7ee286085a1f6570d11848b7Theodore Ts'o info->min = info->min * scale; 177d05508956734d55f7ee286085a1f6570d11848b7Theodore Ts'o info->max = info->max * scale; 178d05508956734d55f7ee286085a1f6570d11848b7Theodore Ts'o info->avg = info->avg / info->real_free_chunks * scale; 1790b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } else { 1800b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o info->min = 0; 1810b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 1820b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1835e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "\nMin. free extent: %lu KB \nMax. free extent: %lu KB\n" 1845e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o "Avg. free extent: %lu KB\n", info->min, info->max, info->avg); 1855e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "Num. free extent: %lu\n", info->real_free_chunks); 1860b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 1875e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "\nHISTOGRAM OF FREE EXTENT SIZES:\n"); 1885e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "%s : %12s %12s %7s\n", "Extent Size Range", 1895e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o "Free extents", "Free Blocks", "Percent"); 1900b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o for (i = 0; i < MAX_HIST; i++) { 1910b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o end = 1 << (i + info->blocksize_bits - units); 1921e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o if (info->histogram.fc_chunks[i] != 0) { 1931e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o char end_str[32]; 1941e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o 1951e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o sprintf(end_str, "%5lu%c-", end, *unitp); 1961e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o if (i == MAX_HIST-1) 1971e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o strcpy(end_str, "max "); 1985e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "%5lu%c...%7s : %12lu %12lu %6.2f%%\n", 1995e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o start, *unitp, end_str, 2005e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o info->histogram.fc_chunks[i], 2015e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o info->histogram.fc_blocks[i], 2025e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o (double)info->histogram.fc_blocks[i] * 100 / 2035e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fs->super->s_free_blocks_count); 2041e48a456b6ca646d66483761e959a81ae78b9156Theodore Ts'o } 2050b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o start = end; 2060b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (start == 1<<10) { 2070b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o start = 1; 2080b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o units += 10; 2090b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o unitp++; 2100b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 2110b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 2120b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2130b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o return retval; 2140b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 2150b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2163cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic void close_device(char *device_name, ext2_filsys fs) 2170b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 21847fee2ef6a23ae06f680336ffde57caa64604a4cLukas Czerner int retval = ext2fs_close_free(&fs); 2190b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2200b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (retval) 2210b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o com_err(device_name, retval, "while closing the filesystem.\n"); 2220b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 2230b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2243cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic void collect_info(ext2_filsys fs, struct chunk_info *chunk_info, FILE *f) 2250b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 226cf5301d7f2c3bbed3d26600335102414cbf0c4baAndreas Dilger unsigned int retval = 0; 2270b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2285e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "Device: %s\n", fs->device_name); 2295e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fprintf(f, "Blocksize: %u bytes\n", fs->blocksize); 2300b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2310b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o retval = ext2fs_read_block_bitmap(fs); 2320b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (retval) { 2330b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o com_err(fs->device_name, retval, "while reading block bitmap"); 2340b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o close_device(fs->device_name, fs); 2350b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o exit(1); 2360b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 2370b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2380b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o init_chunk_info(fs, chunk_info); 2390b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2405e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o retval = get_chunk_info(fs, chunk_info, f); 2410b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (retval) { 2420b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o com_err(fs->device_name, retval, "while collecting chunk info"); 2430b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o close_device(fs->device_name, fs); 2440b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o exit(1); 2450b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 2460b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 2470b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2483cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o#ifndef DEBUGFS 2493cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'ostatic void open_device(char *device_name, ext2_filsys *fs) 2500b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 2510b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o int retval; 252ea2d3788621cec5ed067280c7d228ec8897d2208Theodore Ts'o int flag = EXT2_FLAG_FORCE | EXT2_FLAG_64BITS; 2530b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2540b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o retval = ext2fs_open(device_name, flag, 0, 0, unix_io_manager, fs); 2550b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (retval) { 2560b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o com_err(device_name, retval, "while opening filesystem"); 2570b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o exit(1); 2580b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 259ea2d3788621cec5ed067280c7d228ec8897d2208Theodore Ts'o (*fs)->default_bitmap_type = EXT2FS_BMAP64_RBTREE; 2600b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 2613cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o#endif 2620b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2635e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#ifdef DEBUGFS 2645e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#include "debugfs.h" 2655e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o 2665e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'ovoid do_freefrag(int argc, char **argv) 2675e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#else 2680b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'oint main(int argc, char *argv[]) 2695e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#endif 2700b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o{ 2713cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o struct chunk_info chunk_info; 2720b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o ext2_filsys fs = NULL; 2730b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o char *progname; 274b887f08f959fa3ef4ead9b6e2fd71becf4877a40Mike Frysinger char *end; 275b887f08f959fa3ef4ead9b6e2fd71becf4877a40Mike Frysinger int c; 2760b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2775e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#ifdef DEBUGFS 2785e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o if (check_fs_open(argv[0])) 2795e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o return; 280bf140bf29866991a3711688a5182fc5b1ae7c7cdArtemiy Volkov reset_getopt(); 2815e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#else 2823cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o char *device_name; 2833cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o 284137a7dc05c80cd4e0a4e7aeb21ec79f800a9eecdTheodore Ts'o add_error_table(&et_ext2_error_table); 2855e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#endif 2860b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o progname = argv[0]; 2873cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o memset(&chunk_info, 0, sizeof(chunk_info)); 2880b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 2890b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o while ((c = getopt(argc, argv, "c:h")) != EOF) { 2900b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o switch (c) { 2910b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o case 'c': 2920b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o chunk_info.chunkbytes = strtoull(optarg, &end, 0); 2930b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (*end != '\0') { 2940b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o fprintf(stderr, "%s: bad chunk size '%s'\n", 2950b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o progname, optarg); 2960b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o usage(progname); 2970b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 2980b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (chunk_info.chunkbytes & 2990b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o (chunk_info.chunkbytes - 1)) { 3000b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o fprintf(stderr, "%s: chunk size must be a " 301aff2cf8ed2dfd5f453075122738ba6fdacda334eTheodore Ts'o "power of 2.\n", argv[0]); 3020b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o usage(progname); 3030b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 3040b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o chunk_info.chunkbytes *= 1024; 3050b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o break; 3060b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o case 'h': 3074ebbc0a310b8c2dc239a6b4a99e65331872dcf9aEric Sandeen default: 3080b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o usage(progname); 3090b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o break; 3100b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 3110b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 3120b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 3135e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#ifndef DEBUGFS 3140b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o if (optind == argc) { 3150b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o fprintf(stderr, "%s: missing device name.\n", progname); 3160b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o usage(progname); 3170b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 3180b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 3190b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o device_name = argv[optind]; 3200b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 3210b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o open_device(device_name, &fs); 3225e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#else 3235e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o fs = current_fs; 3245e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#endif 3250b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 326cba91c4b52f9e2fb3afee5513e87d95f9193421aTheodore Ts'o if (chunk_info.chunkbytes && (chunk_info.chunkbytes < fs->blocksize)) { 3270b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o fprintf(stderr, "%s: chunksize must be greater than or equal " 3280b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o "to filesystem blocksize.\n", progname); 3290b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o exit(1); 3300b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o } 3315e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o collect_info(fs, &chunk_info, stdout); 3325e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#ifndef DEBUGFS 3330b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o close_device(device_name, fs); 3340b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o 3353cebf9c1029ca983ebbbae79f7905a02d087ff98Theodore Ts'o return 0; 3365e96c5721d58acfbf9d76b62214f6ae421fe4e6bTheodore Ts'o#endif 3370b2681f45b7f67eedfea6411eddbb858699ae553Theodore Ts'o} 338