diff options
Diffstat (limited to 'e2fsprogs/e2fsck/pass5.c')
| -rw-r--r-- | e2fsprogs/e2fsck/pass5.c | 547 |
1 files changed, 0 insertions, 547 deletions
diff --git a/e2fsprogs/e2fsck/pass5.c b/e2fsprogs/e2fsck/pass5.c deleted file mode 100644 index e708fa4..0000000 --- a/e2fsprogs/e2fsck/pass5.c +++ /dev/null @@ -1,547 +0,0 @@ -/* - * pass5.c --- check block and inode bitmaps against on-disk bitmaps - * - * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. - * - * %Begin-Header% - * This file may be redistributed under the terms of the GNU Public - * License. - * %End-Header% - * - */ - -#include "e2fsck.h" -#include "problem.h" - -static void check_block_bitmaps(e2fsck_t ctx); -static void check_inode_bitmaps(e2fsck_t ctx); -static void check_inode_end(e2fsck_t ctx); -static void check_block_end(e2fsck_t ctx); - -void e2fsck_pass5(e2fsck_t ctx) -{ -#ifdef RESOURCE_TRACK - struct resource_track rtrack; -#endif - struct problem_context pctx; - -#ifdef MTRACE - mtrace_print("Pass 5"); -#endif - -#ifdef RESOURCE_TRACK - init_resource_track(&rtrack); -#endif - - clear_problem_context(&pctx); - - if (!(ctx->options & E2F_OPT_PREEN)) - fix_problem(ctx, PR_5_PASS_HEADER, &pctx); - - if (ctx->progress) - if ((ctx->progress)(ctx, 5, 0, ctx->fs->group_desc_count*2)) - return; - - e2fsck_read_bitmaps(ctx); - - check_block_bitmaps(ctx); - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return; - check_inode_bitmaps(ctx); - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return; - check_inode_end(ctx); - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return; - check_block_end(ctx); - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return; - - ext2fs_free_inode_bitmap(ctx->inode_used_map); - ctx->inode_used_map = 0; - ext2fs_free_inode_bitmap(ctx->inode_dir_map); - ctx->inode_dir_map = 0; - ext2fs_free_block_bitmap(ctx->block_found_map); - ctx->block_found_map = 0; - -#ifdef RESOURCE_TRACK - if (ctx->options & E2F_OPT_TIME2) { - e2fsck_clear_progbar(ctx); - print_resource_track(_("Pass 5"), &rtrack); - } -#endif -} - -#define NO_BLK ((blk_t) -1) - -static void print_bitmap_problem(e2fsck_t ctx, int problem, - struct problem_context *pctx) -{ - switch (problem) { - case PR_5_BLOCK_UNUSED: - if (pctx->blk == pctx->blk2) - pctx->blk2 = 0; - else - problem = PR_5_BLOCK_RANGE_UNUSED; - break; - case PR_5_BLOCK_USED: - if (pctx->blk == pctx->blk2) - pctx->blk2 = 0; - else - problem = PR_5_BLOCK_RANGE_USED; - break; - case PR_5_INODE_UNUSED: - if (pctx->ino == pctx->ino2) - pctx->ino2 = 0; - else - problem = PR_5_INODE_RANGE_UNUSED; - break; - case PR_5_INODE_USED: - if (pctx->ino == pctx->ino2) - pctx->ino2 = 0; - else - problem = PR_5_INODE_RANGE_USED; - break; - } - fix_problem(ctx, problem, pctx); - pctx->blk = pctx->blk2 = NO_BLK; - pctx->ino = pctx->ino2 = 0; -} - -static void check_block_bitmaps(e2fsck_t ctx) -{ - ext2_filsys fs = ctx->fs; - blk_t i; - int *free_array; - int group = 0; - unsigned int blocks = 0; - unsigned int free_blocks = 0; - int group_free = 0; - int actual, bitmap; - struct problem_context pctx; - int problem, save_problem, fixit, had_problem; - errcode_t retval; - - clear_problem_context(&pctx); - free_array = (int *) e2fsck_allocate_memory(ctx, - fs->group_desc_count * sizeof(int), "free block count array"); - - if ((fs->super->s_first_data_block < - ext2fs_get_block_bitmap_start(ctx->block_found_map)) || - (fs->super->s_blocks_count-1 > - ext2fs_get_block_bitmap_end(ctx->block_found_map))) { - pctx.num = 1; - pctx.blk = fs->super->s_first_data_block; - pctx.blk2 = fs->super->s_blocks_count -1; - pctx.ino = ext2fs_get_block_bitmap_start(ctx->block_found_map); - pctx.ino2 = ext2fs_get_block_bitmap_end(ctx->block_found_map); - fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx); - - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } - - if ((fs->super->s_first_data_block < - ext2fs_get_block_bitmap_start(fs->block_map)) || - (fs->super->s_blocks_count-1 > - ext2fs_get_block_bitmap_end(fs->block_map))) { - pctx.num = 2; - pctx.blk = fs->super->s_first_data_block; - pctx.blk2 = fs->super->s_blocks_count -1; - pctx.ino = ext2fs_get_block_bitmap_start(fs->block_map); - pctx.ino2 = ext2fs_get_block_bitmap_end(fs->block_map); - fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx); - - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } - -redo_counts: - had_problem = 0; - save_problem = 0; - pctx.blk = pctx.blk2 = NO_BLK; - for (i = fs->super->s_first_data_block; - i < fs->super->s_blocks_count; - i++) { - actual = ext2fs_fast_test_block_bitmap(ctx->block_found_map, i); - bitmap = ext2fs_fast_test_block_bitmap(fs->block_map, i); - - if (actual == bitmap) - goto do_counts; - - if (!actual && bitmap) { - /* - * Block not used, but marked in use in the bitmap. - */ - problem = PR_5_BLOCK_UNUSED; - } else { - /* - * Block used, but not marked in use in the bitmap. - */ - problem = PR_5_BLOCK_USED; - } - if (pctx.blk == NO_BLK) { - pctx.blk = pctx.blk2 = i; - save_problem = problem; - } else { - if ((problem == save_problem) && - (pctx.blk2 == i-1)) - pctx.blk2++; - else { - print_bitmap_problem(ctx, save_problem, &pctx); - pctx.blk = pctx.blk2 = i; - save_problem = problem; - } - } - ctx->flags |= E2F_FLAG_PROG_SUPPRESS; - had_problem++; - - do_counts: - if (!bitmap) { - group_free++; - free_blocks++; - } - blocks ++; - if ((blocks == fs->super->s_blocks_per_group) || - (i == fs->super->s_blocks_count-1)) { - free_array[group] = group_free; - group ++; - blocks = 0; - group_free = 0; - if (ctx->progress) - if ((ctx->progress)(ctx, 5, group, - fs->group_desc_count*2)) - return; - } - } - if (pctx.blk != NO_BLK) - print_bitmap_problem(ctx, save_problem, &pctx); - if (had_problem) - fixit = end_problem_latch(ctx, PR_LATCH_BBITMAP); - else - fixit = -1; - ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS; - - if (fixit == 1) { - ext2fs_free_block_bitmap(fs->block_map); - retval = ext2fs_copy_bitmap(ctx->block_found_map, - &fs->block_map); - if (retval) { - clear_problem_context(&pctx); - fix_problem(ctx, PR_5_COPY_BBITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - ext2fs_set_bitmap_padding(fs->block_map); - ext2fs_mark_bb_dirty(fs); - - /* Redo the counts */ - blocks = 0; free_blocks = 0; group_free = 0; group = 0; - memset(free_array, 0, fs->group_desc_count * sizeof(int)); - goto redo_counts; - } else if (fixit == 0) - ext2fs_unmark_valid(fs); - - for (i = 0; i < fs->group_desc_count; i++) { - if (free_array[i] != fs->group_desc[i].bg_free_blocks_count) { - pctx.group = i; - pctx.blk = fs->group_desc[i].bg_free_blocks_count; - pctx.blk2 = free_array[i]; - - if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT_GROUP, - &pctx)) { - fs->group_desc[i].bg_free_blocks_count = - free_array[i]; - ext2fs_mark_super_dirty(fs); - } else - ext2fs_unmark_valid(fs); - } - } - if (free_blocks != fs->super->s_free_blocks_count) { - pctx.group = 0; - pctx.blk = fs->super->s_free_blocks_count; - pctx.blk2 = free_blocks; - - if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT, &pctx)) { - fs->super->s_free_blocks_count = free_blocks; - ext2fs_mark_super_dirty(fs); - } else - ext2fs_unmark_valid(fs); - } - ext2fs_free_mem(&free_array); -} - -static void check_inode_bitmaps(e2fsck_t ctx) -{ - ext2_filsys fs = ctx->fs; - ext2_ino_t i; - unsigned int free_inodes = 0; - int group_free = 0; - int dirs_count = 0; - int group = 0; - unsigned int inodes = 0; - int *free_array; - int *dir_array; - int actual, bitmap; - errcode_t retval; - struct problem_context pctx; - int problem, save_problem, fixit, had_problem; - - clear_problem_context(&pctx); - free_array = (int *) e2fsck_allocate_memory(ctx, - fs->group_desc_count * sizeof(int), "free inode count array"); - - dir_array = (int *) e2fsck_allocate_memory(ctx, - fs->group_desc_count * sizeof(int), "directory count array"); - - if ((1 < ext2fs_get_inode_bitmap_start(ctx->inode_used_map)) || - (fs->super->s_inodes_count > - ext2fs_get_inode_bitmap_end(ctx->inode_used_map))) { - pctx.num = 3; - pctx.blk = 1; - pctx.blk2 = fs->super->s_inodes_count; - pctx.ino = ext2fs_get_inode_bitmap_start(ctx->inode_used_map); - pctx.ino2 = ext2fs_get_inode_bitmap_end(ctx->inode_used_map); - fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx); - - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } - if ((1 < ext2fs_get_inode_bitmap_start(fs->inode_map)) || - (fs->super->s_inodes_count > - ext2fs_get_inode_bitmap_end(fs->inode_map))) { - pctx.num = 4; - pctx.blk = 1; - pctx.blk2 = fs->super->s_inodes_count; - pctx.ino = ext2fs_get_inode_bitmap_start(fs->inode_map); - pctx.ino2 = ext2fs_get_inode_bitmap_end(fs->inode_map); - fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx); - - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } - -redo_counts: - had_problem = 0; - save_problem = 0; - pctx.ino = pctx.ino2 = 0; - for (i = 1; i <= fs->super->s_inodes_count; i++) { - actual = ext2fs_fast_test_inode_bitmap(ctx->inode_used_map, i); - bitmap = ext2fs_fast_test_inode_bitmap(fs->inode_map, i); - - if (actual == bitmap) - goto do_counts; - - if (!actual && bitmap) { - /* - * Inode wasn't used, but marked in bitmap - */ - problem = PR_5_INODE_UNUSED; - } else /* if (actual && !bitmap) */ { - /* - * Inode used, but not in bitmap - */ - problem = PR_5_INODE_USED; - } - if (pctx.ino == 0) { - pctx.ino = pctx.ino2 = i; - save_problem = problem; - } else { - if ((problem == save_problem) && - (pctx.ino2 == i-1)) - pctx.ino2++; - else { - print_bitmap_problem(ctx, save_problem, &pctx); - pctx.ino = pctx.ino2 = i; - save_problem = problem; - } - } - ctx->flags |= E2F_FLAG_PROG_SUPPRESS; - had_problem++; - -do_counts: - if (!bitmap) { - group_free++; - free_inodes++; - } else { - if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, i)) - dirs_count++; - } - inodes++; - if ((inodes == fs->super->s_inodes_per_group) || - (i == fs->super->s_inodes_count)) { - free_array[group] = group_free; - dir_array[group] = dirs_count; - group ++; - inodes = 0; - group_free = 0; - dirs_count = 0; - if (ctx->progress) - if ((ctx->progress)(ctx, 5, - group + fs->group_desc_count, - fs->group_desc_count*2)) - return; - } - } - if (pctx.ino) - print_bitmap_problem(ctx, save_problem, &pctx); - - if (had_problem) - fixit = end_problem_latch(ctx, PR_LATCH_IBITMAP); - else - fixit = -1; - ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS; - - if (fixit == 1) { - ext2fs_free_inode_bitmap(fs->inode_map); - retval = ext2fs_copy_bitmap(ctx->inode_used_map, - &fs->inode_map); - if (retval) { - clear_problem_context(&pctx); - fix_problem(ctx, PR_5_COPY_IBITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - ext2fs_set_bitmap_padding(fs->inode_map); - ext2fs_mark_ib_dirty(fs); - - /* redo counts */ - inodes = 0; free_inodes = 0; group_free = 0; - dirs_count = 0; group = 0; - memset(free_array, 0, fs->group_desc_count * sizeof(int)); - memset(dir_array, 0, fs->group_desc_count * sizeof(int)); - goto redo_counts; - } else if (fixit == 0) - ext2fs_unmark_valid(fs); - - for (i = 0; i < fs->group_desc_count; i++) { - if (free_array[i] != fs->group_desc[i].bg_free_inodes_count) { - pctx.group = i; - pctx.ino = fs->group_desc[i].bg_free_inodes_count; - pctx.ino2 = free_array[i]; - if (fix_problem(ctx, PR_5_FREE_INODE_COUNT_GROUP, - &pctx)) { - fs->group_desc[i].bg_free_inodes_count = - free_array[i]; - ext2fs_mark_super_dirty(fs); - } else - ext2fs_unmark_valid(fs); - } - if (dir_array[i] != fs->group_desc[i].bg_used_dirs_count) { - pctx.group = i; - pctx.ino = fs->group_desc[i].bg_used_dirs_count; - pctx.ino2 = dir_array[i]; - - if (fix_problem(ctx, PR_5_FREE_DIR_COUNT_GROUP, - &pctx)) { - fs->group_desc[i].bg_used_dirs_count = - dir_array[i]; - ext2fs_mark_super_dirty(fs); - } else - ext2fs_unmark_valid(fs); - } - } - if (free_inodes != fs->super->s_free_inodes_count) { - pctx.group = -1; - pctx.ino = fs->super->s_free_inodes_count; - pctx.ino2 = free_inodes; - - if (fix_problem(ctx, PR_5_FREE_INODE_COUNT, &pctx)) { - fs->super->s_free_inodes_count = free_inodes; - ext2fs_mark_super_dirty(fs); - } else - ext2fs_unmark_valid(fs); - } - ext2fs_free_mem(&free_array); - ext2fs_free_mem(&dir_array); -} - -static void check_inode_end(e2fsck_t ctx) -{ - ext2_filsys fs = ctx->fs; - ext2_ino_t end, save_inodes_count, i; - struct problem_context pctx; - - clear_problem_context(&pctx); - - end = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count; - pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map, end, - &save_inodes_count); - if (pctx.errcode) { - pctx.num = 1; - fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } - if (save_inodes_count == end) - return; - - for (i = save_inodes_count + 1; i <= end; i++) { - if (!ext2fs_test_inode_bitmap(fs->inode_map, i)) { - if (fix_problem(ctx, PR_5_INODE_BMAP_PADDING, &pctx)) { - for (i = save_inodes_count + 1; i <= end; i++) - ext2fs_mark_inode_bitmap(fs->inode_map, - i); - ext2fs_mark_ib_dirty(fs); - } else - ext2fs_unmark_valid(fs); - break; - } - } - - pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map, - save_inodes_count, 0); - if (pctx.errcode) { - pctx.num = 2; - fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } -} - -static void check_block_end(e2fsck_t ctx) -{ - ext2_filsys fs = ctx->fs; - blk_t end, save_blocks_count, i; - struct problem_context pctx; - - clear_problem_context(&pctx); - - end = fs->block_map->start + - (EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count) - 1; - pctx.errcode = ext2fs_fudge_block_bitmap_end(fs->block_map, end, - &save_blocks_count); - if (pctx.errcode) { - pctx.num = 3; - fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } - if (save_blocks_count == end) - return; - - for (i = save_blocks_count + 1; i <= end; i++) { - if (!ext2fs_test_block_bitmap(fs->block_map, i)) { - if (fix_problem(ctx, PR_5_BLOCK_BMAP_PADDING, &pctx)) { - for (i = save_blocks_count + 1; i <= end; i++) - ext2fs_mark_block_bitmap(fs->block_map, - i); - ext2fs_mark_bb_dirty(fs); - } else - ext2fs_unmark_valid(fs); - break; - } - } - - pctx.errcode = ext2fs_fudge_block_bitmap_end(fs->block_map, - save_blocks_count, 0); - if (pctx.errcode) { - pctx.num = 4; - fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; /* fatal */ - return; - } -} - - - |