e2fsck.c revision 8fdc9985c1e2a4467630b33719b7feb281b7b33b
1/* 2 * e2fsck.c - a consistency checker for the new extended file system. 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12#include <errno.h> 13 14#include "e2fsck.h" 15#include "problem.h" 16 17/* 18 * This function allocates an e2fsck context 19 */ 20errcode_t e2fsck_allocate_context(e2fsck_t *ret) 21{ 22 e2fsck_t context; 23 errcode_t retval; 24 25 retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), 26 (void **) &context); 27 if (retval) 28 return retval; 29 30 memset(context, 0, sizeof(struct e2fsck_struct)); 31 32 context->process_inode_size = 256; 33 34 *ret = context; 35 return 0; 36} 37 38/* 39 * This function resets an e2fsck context; it is called when e2fsck 40 * needs to be restarted. 41 */ 42errcode_t e2fsck_reset_context(e2fsck_t ctx) 43{ 44 ctx->flags = 0; 45 if (ctx->inode_used_map) { 46 ext2fs_free_inode_bitmap(ctx->inode_used_map); 47 ctx->inode_used_map = 0; 48 } 49 if (ctx->inode_dir_map) { 50 ext2fs_free_inode_bitmap(ctx->inode_dir_map); 51 ctx->inode_dir_map = 0; 52 } 53 if (ctx->inode_reg_map) { 54 ext2fs_free_inode_bitmap(ctx->inode_reg_map); 55 ctx->inode_reg_map = 0; 56 } 57 if (ctx->block_found_map) { 58 ext2fs_free_block_bitmap(ctx->block_found_map); 59 ctx->block_found_map = 0; 60 } 61 if (ctx->inode_link_info) { 62 ext2fs_free_icount(ctx->inode_link_info); 63 ctx->inode_link_info = 0; 64 } 65 if (ctx->journal_io) { 66 if (ctx->fs && ctx->fs->io != ctx->journal_io) 67 io_channel_close(ctx->journal_io); 68 ctx->journal_io = 0; 69 } 70 if (ctx->fs && ctx->fs->dblist) { 71 ext2fs_free_dblist(ctx->fs->dblist); 72 ctx->fs->dblist = 0; 73 } 74 e2fsck_free_dir_info(ctx); 75#ifdef ENABLE_HTREE 76 e2fsck_free_dx_dir_info(ctx); 77#endif 78 if (ctx->refcount) { 79 ea_refcount_free(ctx->refcount); 80 ctx->refcount = 0; 81 } 82 if (ctx->refcount_extra) { 83 ea_refcount_free(ctx->refcount_extra); 84 ctx->refcount_extra = 0; 85 } 86 if (ctx->block_dup_map) { 87 ext2fs_free_block_bitmap(ctx->block_dup_map); 88 ctx->block_dup_map = 0; 89 } 90 if (ctx->block_ea_map) { 91 ext2fs_free_block_bitmap(ctx->block_ea_map); 92 ctx->block_ea_map = 0; 93 } 94 if (ctx->inode_bb_map) { 95 ext2fs_free_inode_bitmap(ctx->inode_bb_map); 96 ctx->inode_bb_map = 0; 97 } 98 if (ctx->inode_bad_map) { 99 ext2fs_free_inode_bitmap(ctx->inode_bad_map); 100 ctx->inode_bad_map = 0; 101 } 102 if (ctx->inode_imagic_map) { 103 ext2fs_free_inode_bitmap(ctx->inode_imagic_map); 104 ctx->inode_imagic_map = 0; 105 } 106 107 /* 108 * Clear the array of invalid meta-data flags 109 */ 110 if (ctx->invalid_inode_bitmap_flag) { 111 ext2fs_free_mem((void **) &ctx->invalid_inode_bitmap_flag); 112 ctx->invalid_inode_bitmap_flag = 0; 113 } 114 if (ctx->invalid_block_bitmap_flag) { 115 ext2fs_free_mem((void **) &ctx->invalid_block_bitmap_flag); 116 ctx->invalid_block_bitmap_flag = 0; 117 } 118 if (ctx->invalid_inode_table_flag) { 119 ext2fs_free_mem((void **) &ctx->invalid_inode_table_flag); 120 ctx->invalid_inode_table_flag = 0; 121 } 122 123 /* Clear statistic counters */ 124 ctx->fs_directory_count = 0; 125 ctx->fs_regular_count = 0; 126 ctx->fs_blockdev_count = 0; 127 ctx->fs_chardev_count = 0; 128 ctx->fs_links_count = 0; 129 ctx->fs_symlinks_count = 0; 130 ctx->fs_fast_symlinks_count = 0; 131 ctx->fs_fifo_count = 0; 132 ctx->fs_total_count = 0; 133 ctx->fs_badblocks_count = 0; 134 ctx->fs_sockets_count = 0; 135 ctx->fs_ind_count = 0; 136 ctx->fs_dind_count = 0; 137 ctx->fs_tind_count = 0; 138 ctx->fs_fragmented = 0; 139 ctx->large_files = 0; 140 141 /* Reset the superblock to the user's requested value */ 142 ctx->superblock = ctx->use_superblock; 143 144 return 0; 145} 146 147void e2fsck_free_context(e2fsck_t ctx) 148{ 149 if (!ctx) 150 return; 151 152 e2fsck_reset_context(ctx); 153 154 ext2fs_free_mem((void **) &ctx); 155} 156 157/* 158 * This function runs through the e2fsck passes and calls them all, 159 * returning restart, abort, or cancel as necessary... 160 */ 161typedef void (*pass_t)(e2fsck_t ctx); 162 163pass_t e2fsck_passes[] = { 164 e2fsck_pass1, e2fsck_pass2, e2fsck_pass3, e2fsck_pass4, 165 e2fsck_pass5, 0 }; 166 167#define E2F_FLAG_RUN_RETURN (E2F_FLAG_SIGNAL_MASK|E2F_FLAG_RESTART) 168 169int e2fsck_run(e2fsck_t ctx) 170{ 171 int i; 172 pass_t e2fsck_pass; 173 174#ifdef HAVE_SETJMP_H 175 if (setjmp(ctx->abort_loc)) 176 return (ctx->flags & E2F_FLAG_RUN_RETURN); 177 ctx->flags |= E2F_FLAG_SETJMP_OK; 178#endif 179 180 for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) { 181 if (ctx->flags & E2F_FLAG_RUN_RETURN) 182 break; 183 e2fsck_pass(ctx); 184 if (ctx->progress) 185 (void) (ctx->progress)(ctx, 0, 0, 0); 186 } 187 ctx->flags &= ~E2F_FLAG_SETJMP_OK; 188 189 if (ctx->flags & E2F_FLAG_RUN_RETURN) 190 return (ctx->flags & E2F_FLAG_RUN_RETURN); 191 return 0; 192} 193 194 195 196 197 198 199