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path: root/e2fsprogs/e2fsck/pass5.c
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Diffstat (limited to 'e2fsprogs/e2fsck/pass5.c')
-rw-r--r--e2fsprogs/e2fsck/pass5.c547
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;
- }
-}
-
-
-