/*
* e2fsck.c - superblock checks
- *
+ *
* Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
*
* %Begin-Header%
* %End-Header%
*/
+#include "config.h"
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
}
/*
- * This routine may get stubbed out in special compilations of the
- * e2fsck code..
- */
-#ifndef EXT2_SPECIAL_DEVICE_SIZE
-errcode_t e2fsck_get_device_size(e2fsck_t ctx)
-{
- return (ext2fs_get_device_size(ctx->filesystem_name,
- EXT2_BLOCK_SIZE(ctx->fs->super),
- &ctx->num_blocks));
-}
-#endif
-
-/*
* helper function to release an inode
*/
struct process_block_struct {
- ino_t ino;
- e2fsck_t ctx;
+ e2fsck_t ctx;
+ char *buf;
struct problem_context *pctx;
- int abort;
+ int truncating;
+ int truncate_offset;
+ e2_blkcnt_t truncate_block;
+ int truncated_blocks;
+ int abort;
+ errcode_t errcode;
};
static int release_inode_block(ext2_filsys fs,
- blk_t *block_nr,
- int blockcnt,
+ blk64_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk64_t ref_blk EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
void *priv_data)
{
struct process_block_struct *pb;
- e2fsck_t ctx;
- struct problem_context *pctx;
- blk_t blk = *block_nr;
+ e2fsck_t ctx;
+ struct problem_context *pctx;
+ blk64_t blk = *block_nr;
+ int retval = 0;
pb = (struct process_block_struct *) priv_data;
ctx = pb->ctx;
return 0;
if ((blk < fs->super->s_first_data_block) ||
- (blk >= fs->super->s_blocks_count)) {
+ (blk >= ext2fs_blocks_count(fs->super))) {
fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx);
+ return_abort:
pb->abort = 1;
return BLOCK_ABORT;
}
- if (!ext2fs_test_block_bitmap(fs->block_map, blk)) {
+ if (!ext2fs_test_block_bitmap2(fs->block_map, blk)) {
fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx);
- pb->abort = 1;
- return BLOCK_ABORT;
+ goto return_abort;
}
-
- ext2fs_unmark_block_bitmap(fs->block_map, blk);
-
- return 0;
+
+ /*
+ * If we are deleting an orphan, then we leave the fields alone.
+ * If we are truncating an orphan, then update the inode fields
+ * and clean up any partial block data.
+ */
+ if (pb->truncating) {
+ /*
+ * We only remove indirect blocks if they are
+ * completely empty.
+ */
+ if (blockcnt < 0) {
+ int i, limit;
+ blk_t *bp;
+
+ pb->errcode = io_channel_read_blk64(fs->io, blk, 1,
+ pb->buf);
+ if (pb->errcode)
+ goto return_abort;
+
+ limit = fs->blocksize >> 2;
+ for (i = 0, bp = (blk_t *) pb->buf;
+ i < limit; i++, bp++)
+ if (*bp)
+ return 0;
+ }
+ /*
+ * We don't remove direct blocks until we've reached
+ * the truncation block.
+ */
+ if (blockcnt >= 0 && blockcnt < pb->truncate_block)
+ return 0;
+ /*
+ * If part of the last block needs truncating, we do
+ * it here.
+ */
+ if ((blockcnt == pb->truncate_block) && pb->truncate_offset) {
+ pb->errcode = io_channel_read_blk64(fs->io, blk, 1,
+ pb->buf);
+ if (pb->errcode)
+ goto return_abort;
+ memset(pb->buf + pb->truncate_offset, 0,
+ fs->blocksize - pb->truncate_offset);
+ pb->errcode = io_channel_write_blk64(fs->io, blk, 1,
+ pb->buf);
+ if (pb->errcode)
+ goto return_abort;
+ }
+ pb->truncated_blocks++;
+ *block_nr = 0;
+ retval |= BLOCK_CHANGED;
+ }
+
+ ext2fs_block_alloc_stats2(fs, blk, -1);
+ return retval;
}
-
+
/*
* This function releases an inode. Returns 1 if an inconsistency was
- * found.
+ * found. If the inode has a link count, then it is being truncated and
+ * not deleted.
*/
-static int release_inode_blocks(e2fsck_t ctx, ino_t ino, char* block_buf,
+static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino,
+ struct ext2_inode *inode, char *block_buf,
struct problem_context *pctx)
{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
struct process_block_struct pb;
+ ext2_filsys fs = ctx->fs;
+ errcode_t retval;
+ __u32 count;
- pb.ino = ino;
+ if (!ext2fs_inode_has_valid_blocks2(fs, inode))
+ return 0;
+
+ pb.buf = block_buf + 3 * ctx->fs->blocksize;
pb.ctx = ctx;
pb.abort = 0;
+ pb.errcode = 0;
pb.pctx = pctx;
- retval = ext2fs_block_iterate(fs, ino, 0, block_buf,
- release_inode_block, &pb);
+ if (inode->i_links_count) {
+ pb.truncating = 1;
+ pb.truncate_block = (e2_blkcnt_t)
+ ((EXT2_I_SIZE(inode) + fs->blocksize - 1) /
+ fs->blocksize);
+ pb.truncate_offset = inode->i_size % fs->blocksize;
+ } else {
+ pb.truncating = 0;
+ pb.truncate_block = 0;
+ pb.truncate_offset = 0;
+ }
+ pb.truncated_blocks = 0;
+ retval = ext2fs_block_iterate3(fs, ino, BLOCK_FLAG_DEPTH_TRAVERSE,
+ block_buf, release_inode_block, &pb);
if (retval) {
- com_err("delete_file", retval,
+ com_err("release_inode_blocks", retval,
_("while calling ext2fs_block_iterate for inode %d"),
ino);
return 1;
if (pb.abort)
return 1;
- ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
- ext2fs_mark_ib_dirty(fs);
- ext2fs_mark_bb_dirty(fs);
+ /* Refresh the inode since ext2fs_block_iterate may have changed it */
+ e2fsck_read_inode(ctx, ino, inode, "release_inode_blocks");
+
+ if (pb.truncated_blocks)
+ ext2fs_iblk_sub_blocks(fs, inode, pb.truncated_blocks);
+
+ if (ext2fs_file_acl_block(fs, inode)) {
+ retval = ext2fs_adjust_ea_refcount2(fs,
+ ext2fs_file_acl_block(fs, inode),
+ block_buf, -1, &count);
+ if (retval == EXT2_ET_BAD_EA_BLOCK_NUM) {
+ retval = 0;
+ count = 1;
+ }
+ if (retval) {
+ com_err("release_inode_blocks", retval,
+ _("while calling ext2fs_adjust_ea_refcount2 for inode %d"),
+ ino);
+ return 1;
+ }
+ if (count == 0)
+ ext2fs_block_alloc_stats2(fs,
+ ext2fs_file_acl_block(fs, inode), -1);
+ ext2fs_file_acl_block_set(fs, inode, 0);
+ }
return 0;
}
static int release_orphan_inodes(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
- ino_t ino, next_ino;
+ ext2_ino_t ino, next_ino;
struct ext2_inode inode;
struct problem_context pctx;
char *block_buf;
if ((ino = fs->super->s_last_orphan) == 0)
return 0;
+ /*
+ * Win or lose, we won't be using the head of the orphan inode
+ * list again.
+ */
+ fs->super->s_last_orphan = 0;
+ ext2fs_mark_super_dirty(fs);
+
+ /*
+ * If the filesystem contains errors, don't run the orphan
+ * list, since the orphan list can't be trusted; and we're
+ * going to be running a full e2fsck run anyway...
+ */
+ if (fs->super->s_state & EXT2_ERROR_FS)
+ return 0;
+
if ((ino < EXT2_FIRST_INODE(fs->super)) ||
(ino > fs->super->s_inodes_count)) {
clear_problem_context(&pctx);
- pctx.ino;
+ pctx.ino = ino;
fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx);
return 1;
}
- block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
- "block interate buffer");
+ block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 4,
+ "block iterate buffer");
e2fsck_read_bitmaps(ctx);
-
- while (ino) {
-#ifdef JFS_DEBUG
- printf("Clearing orphan inode %d\n", ino);
-#endif
- e2fsck_read_inode(ctx, ino, &inode, "delete_file");
+ while (ino) {
+ e2fsck_read_inode(ctx, ino, &inode, "release_orphan_inodes");
clear_problem_context(&pctx);
- pctx.ino;
+ pctx.ino = ino;
pctx.inode = &inode;
+ pctx.str = inode.i_links_count ? _("Truncating") :
+ _("Clearing");
+
+ fix_problem(ctx, PR_0_ORPHAN_CLEAR_INODE, &pctx);
- if (inode.i_links_count) {
- fix_problem(ctx, PR_0_ORPHAN_INODE_INUSE, &pctx);
- goto abort;
- }
next_ino = inode.i_dtime;
if (next_ino &&
- ((ino < EXT2_FIRST_INODE(fs->super)) ||
- (ino > fs->super->s_inodes_count))) {
+ ((next_ino < EXT2_FIRST_INODE(fs->super)) ||
+ (next_ino > fs->super->s_inodes_count))) {
+ pctx.ino = next_ino;
fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx);
- goto abort;
+ goto return_abort;
}
- if (release_inode_blocks(ctx, ino, block_buf, &pctx))
- goto abort;
-
- inode.i_dtime = time(0);
+ if (release_inode_blocks(ctx, ino, &inode, block_buf, &pctx))
+ goto return_abort;
+
+ if (!inode.i_links_count) {
+ ext2fs_inode_alloc_stats2(fs, ino, -1,
+ LINUX_S_ISDIR(inode.i_mode));
+ inode.i_dtime = ctx->now;
+ } else {
+ inode.i_dtime = 0;
+ }
e2fsck_write_inode(ctx, ino, &inode, "delete_file");
ino = next_ino;
}
+ ext2fs_free_mem(&block_buf);
return 0;
-abort:
- ext2fs_free_mem((void **) &block_buf);
+return_abort:
+ ext2fs_free_mem(&block_buf);
return 1;
}
+/*
+ * Check the resize inode to make sure it is sane. We check both for
+ * the case where on-line resizing is not enabled (in which case the
+ * resize inode should be cleared) as well as the case where on-line
+ * resizing is enabled.
+ */
+void check_resize_inode(e2fsck_t ctx)
+{
+ ext2_filsys fs = ctx->fs;
+ struct ext2_inode inode;
+ struct problem_context pctx;
+ int i, gdt_off, ind_off;
+ dgrp_t j;
+ blk64_t blk, pblk, expect;
+ __u32 *dind_buf = 0, *ind_buf;
+ errcode_t retval;
+
+ clear_problem_context(&pctx);
+
+ /*
+ * If the resize inode feature isn't set, then
+ * s_reserved_gdt_blocks must be zero.
+ */
+ if (!(fs->super->s_feature_compat &
+ EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
+ if (fs->super->s_reserved_gdt_blocks) {
+ pctx.num = fs->super->s_reserved_gdt_blocks;
+ if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS,
+ &pctx)) {
+ fs->super->s_reserved_gdt_blocks = 0;
+ ext2fs_mark_super_dirty(fs);
+ }
+ }
+ }
+
+ /* Read the resize inode */
+ pctx.ino = EXT2_RESIZE_INO;
+ retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode);
+ if (retval) {
+ if (fs->super->s_feature_compat &
+ EXT2_FEATURE_COMPAT_RESIZE_INODE)
+ ctx->flags |= E2F_FLAG_RESIZE_INODE;
+ return;
+ }
+
+ /*
+ * If the resize inode feature isn't set, check to make sure
+ * the resize inode is cleared; then we're done.
+ */
+ if (!(fs->super->s_feature_compat &
+ EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
+ for (i=0; i < EXT2_N_BLOCKS; i++) {
+ if (inode.i_block[i])
+ break;
+ }
+ if ((i < EXT2_N_BLOCKS) &&
+ fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) {
+ memset(&inode, 0, sizeof(inode));
+ e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
+ "clear_resize");
+ }
+ return;
+ }
+
+ /*
+ * The resize inode feature is enabled; check to make sure the
+ * only block in use is the double indirect block
+ */
+ blk = inode.i_block[EXT2_DIND_BLOCK];
+ for (i=0; i < EXT2_N_BLOCKS; i++) {
+ if (i != EXT2_DIND_BLOCK && inode.i_block[i])
+ break;
+ }
+ if ((i < EXT2_N_BLOCKS) || !blk || !inode.i_links_count ||
+ !(inode.i_mode & LINUX_S_IFREG) ||
+ (blk < fs->super->s_first_data_block ||
+ blk >= ext2fs_blocks_count(fs->super))) {
+ resize_inode_invalid:
+ if (fix_problem(ctx, PR_0_RESIZE_INODE_INVALID, &pctx)) {
+ memset(&inode, 0, sizeof(inode));
+ e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
+ "clear_resize");
+ ctx->flags |= E2F_FLAG_RESIZE_INODE;
+ }
+ if (!(ctx->options & E2F_OPT_READONLY)) {
+ fs->super->s_state &= ~EXT2_VALID_FS;
+ ext2fs_mark_super_dirty(fs);
+ }
+ goto cleanup;
+ }
+ dind_buf = (__u32 *) e2fsck_allocate_memory(ctx, fs->blocksize * 2,
+ "resize dind buffer");
+ ind_buf = (__u32 *) ((char *) dind_buf + fs->blocksize);
+
+ retval = ext2fs_read_ind_block(fs, blk, dind_buf);
+ if (retval)
+ goto resize_inode_invalid;
+
+ gdt_off = fs->desc_blocks;
+ pblk = fs->super->s_first_data_block + 1 + fs->desc_blocks;
+ if (fs->blocksize == 1024 && fs->super->s_first_data_block == 0)
+ pblk++; /* Deal with 1024 blocksize bigalloc fs */
+ for (i = 0; i < fs->super->s_reserved_gdt_blocks / 4;
+ i++, gdt_off++, pblk++) {
+ gdt_off %= fs->blocksize/4;
+ if (dind_buf[gdt_off] != pblk)
+ goto resize_inode_invalid;
+ retval = ext2fs_read_ind_block(fs, pblk, ind_buf);
+ if (retval)
+ goto resize_inode_invalid;
+ ind_off = 0;
+ for (j = 1; j < fs->group_desc_count; j++) {
+ if (!ext2fs_bg_has_super(fs, j))
+ continue;
+ expect = pblk + (j * fs->super->s_blocks_per_group);
+ if (ind_buf[ind_off] != expect)
+ goto resize_inode_invalid;
+ ind_off++;
+ }
+ }
+
+cleanup:
+ if (dind_buf)
+ ext2fs_free_mem(&dind_buf);
+
+ }
+
+/*
+ * This function checks the dirhash signed/unsigned hint if necessary.
+ */
+static void e2fsck_fix_dirhash_hint(e2fsck_t ctx)
+{
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct problem_context pctx;
+ char c;
+
+ if ((ctx->options & E2F_OPT_READONLY) ||
+ !(sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
+ (sb->s_flags & (EXT2_FLAGS_SIGNED_HASH|EXT2_FLAGS_UNSIGNED_HASH)))
+ return;
+
+ c = (char) 255;
+
+ clear_problem_context(&pctx);
+ if (fix_problem(ctx, PR_0_DIRHASH_HINT, &pctx)) {
+ if (((int) c) == -1) {
+ sb->s_flags |= EXT2_FLAGS_SIGNED_HASH;
+ } else {
+ sb->s_flags |= EXT2_FLAGS_UNSIGNED_HASH;
+ }
+ ext2fs_mark_super_dirty(ctx->fs);
+ }
+}
+
void check_super_block(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
- blk_t first_block, last_block;
- struct ext2fs_sb *s = (struct ext2fs_sb *) fs->super;
- blk_t blocks_per_group = fs->super->s_blocks_per_group;
+ blk64_t first_block, last_block;
+ struct ext2_super_block *sb = fs->super;
+ problem_t problem;
+ blk64_t blocks_per_group = fs->super->s_blocks_per_group;
+ __u32 bpg_max, cpg_max;
int inodes_per_block;
+ int ipg_max;
+ int inode_size;
+ int accept_time_fudge;
+ int broken_system_clock;
dgrp_t i;
- blk_t should_be;
+ blk64_t should_be;
struct problem_context pctx;
-
- inodes_per_block = (EXT2_INODE_SIZE(fs->super) +
- EXT2_BLOCK_SIZE(fs->super) - 1) /
- EXT2_BLOCK_SIZE(fs->super);
+ blk64_t free_blocks = 0;
+ ino_t free_inodes = 0;
+ int csum_flag, clear_test_fs_flag;
+
+ inodes_per_block = EXT2_INODES_PER_BLOCK(fs->super);
+ ipg_max = inodes_per_block * (blocks_per_group - 4);
+ if (ipg_max > EXT2_MAX_INODES_PER_GROUP(sb))
+ ipg_max = EXT2_MAX_INODES_PER_GROUP(sb);
+ cpg_max = 8 * EXT2_BLOCK_SIZE(sb);
+ if (cpg_max > EXT2_MAX_CLUSTERS_PER_GROUP(sb))
+ cpg_max = EXT2_MAX_CLUSTERS_PER_GROUP(sb);
+ bpg_max = 8 * EXT2_BLOCK_SIZE(sb) * EXT2FS_CLUSTER_RATIO(fs);
+ if (bpg_max > EXT2_MAX_BLOCKS_PER_GROUP(sb))
+ bpg_max = EXT2_MAX_BLOCKS_PER_GROUP(sb);
ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap");
sizeof(int) * fs->group_desc_count, "invalid_block_bitmap");
ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx,
sizeof(int) * fs->group_desc_count, "invalid_inode_table");
-
+
clear_problem_context(&pctx);
/*
* Verify the super block constants...
*/
- check_super_value(ctx, "inodes_count", s->s_inodes_count,
+ check_super_value(ctx, "inodes_count", sb->s_inodes_count,
MIN_CHECK, 1, 0);
- check_super_value(ctx, "blocks_count", s->s_blocks_count,
+ check_super_value(ctx, "blocks_count", ext2fs_blocks_count(sb),
MIN_CHECK, 1, 0);
- check_super_value(ctx, "first_data_block", s->s_first_data_block,
- MAX_CHECK, 0, s->s_blocks_count);
- check_super_value(ctx, "log_frag_size", s->s_log_frag_size,
- MAX_CHECK, 0, 2);
- check_super_value(ctx, "log_block_size", s->s_log_block_size,
- MIN_CHECK | MAX_CHECK, s->s_log_frag_size,
- 2);
- check_super_value(ctx, "frags_per_group", s->s_frags_per_group,
- MIN_CHECK | MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s));
- check_super_value(ctx, "blocks_per_group", s->s_blocks_per_group,
- MIN_CHECK | MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s));
- check_super_value(ctx, "inodes_per_group", s->s_inodes_per_group,
- MIN_CHECK | MAX_CHECK, 1,
- inodes_per_block * blocks_per_group);
- check_super_value(ctx, "r_blocks_count", s->s_r_blocks_count,
- MAX_CHECK, 0, s->s_blocks_count);
-
- if (!ctx->num_blocks) {
- pctx.errcode = e2fsck_get_device_size(ctx);
- if (pctx.errcode && pctx.errcode != EXT2_ET_UNIMPLEMENTED) {
- fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if ((pctx.errcode != EXT2_ET_UNIMPLEMENTED) &&
- (ctx->num_blocks < s->s_blocks_count)) {
- pctx.blk = s->s_blocks_count;
- pctx.blk2 = ctx->num_blocks;
- if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) {
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- }
+ check_super_value(ctx, "first_data_block", sb->s_first_data_block,
+ MAX_CHECK, 0, ext2fs_blocks_count(sb));
+ check_super_value(ctx, "log_block_size", sb->s_log_block_size,
+ MIN_CHECK | MAX_CHECK, 0,
+ EXT2_MAX_BLOCK_LOG_SIZE - EXT2_MIN_BLOCK_LOG_SIZE);
+ check_super_value(ctx, "log_cluster_size",
+ sb->s_log_cluster_size,
+ MIN_CHECK | MAX_CHECK, sb->s_log_block_size,
+ (EXT2_MAX_CLUSTER_LOG_SIZE -
+ EXT2_MIN_CLUSTER_LOG_SIZE));
+ check_super_value(ctx, "clusters_per_group", sb->s_clusters_per_group,
+ MIN_CHECK | MAX_CHECK, 8, cpg_max);
+ check_super_value(ctx, "blocks_per_group", sb->s_blocks_per_group,
+ MIN_CHECK | MAX_CHECK, 8, bpg_max);
+ check_super_value(ctx, "inodes_per_group", sb->s_inodes_per_group,
+ MIN_CHECK | MAX_CHECK, inodes_per_block, ipg_max);
+ check_super_value(ctx, "r_blocks_count", ext2fs_r_blocks_count(sb),
+ MAX_CHECK, 0, ext2fs_blocks_count(sb) / 2);
+ check_super_value(ctx, "reserved_gdt_blocks",
+ sb->s_reserved_gdt_blocks, MAX_CHECK, 0,
+ fs->blocksize/4);
+ if (sb->s_rev_level > EXT2_GOOD_OLD_REV)
+ check_super_value(ctx, "first_ino", sb->s_first_ino,
+ MIN_CHECK | MAX_CHECK,
+ EXT2_GOOD_OLD_FIRST_INO, sb->s_inodes_count);
+ inode_size = EXT2_INODE_SIZE(sb);
+ check_super_value(ctx, "inode_size",
+ inode_size, MIN_CHECK | MAX_CHECK,
+ EXT2_GOOD_OLD_INODE_SIZE, fs->blocksize);
+ if (sb->s_blocks_per_group != (sb->s_clusters_per_group *
+ EXT2FS_CLUSTER_RATIO(fs))) {
+ pctx.num = sb->s_clusters_per_group * EXT2FS_CLUSTER_RATIO(fs);
+ pctx.str = "block_size";
+ fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT; /* never get here! */
+ return;
}
-
- if (s->s_log_block_size != s->s_log_frag_size) {
- pctx.blk = EXT2_BLOCK_SIZE(s);
- pctx.blk2 = EXT2_FRAG_SIZE(s);
- fix_problem(ctx, PR_0_NO_FRAGMENTS, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
+ if (inode_size & (inode_size - 1)) {
+ pctx.num = inode_size;
+ pctx.str = "inode_size";
+ fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT; /* never get here! */
return;
}
- should_be = s->s_frags_per_group >>
- (s->s_log_block_size - s->s_log_frag_size);
- if (s->s_blocks_per_group != should_be) {
- pctx.blk = s->s_blocks_per_group;
- pctx.blk2 = should_be;
- fix_problem(ctx, PR_0_BLOCKS_PER_GROUP, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
+ if ((ctx->flags & E2F_FLAG_GOT_DEVSIZE) &&
+ (ctx->num_blocks < ext2fs_blocks_count(sb))) {
+ pctx.blk = ext2fs_blocks_count(sb);
+ pctx.blk2 = ctx->num_blocks;
+ if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) {
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
}
- should_be = (s->s_log_block_size == 0) ? 1 : 0;
- if (s->s_first_data_block != should_be) {
- pctx.blk = s->s_first_data_block;
+ should_be = (sb->s_log_block_size == 0 &&
+ EXT2FS_CLUSTER_RATIO(fs) == 1) ? 1 : 0;
+ if (sb->s_first_data_block != should_be) {
+ pctx.blk = sb->s_first_data_block;
pctx.blk2 = should_be;
fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
- should_be = s->s_inodes_per_group * fs->group_desc_count;
- if (s->s_inodes_count != should_be) {
- pctx.ino = s->s_inodes_count;
+ should_be = sb->s_inodes_per_group * fs->group_desc_count;
+ if (sb->s_inodes_count != should_be) {
+ pctx.ino = sb->s_inodes_count;
pctx.ino2 = should_be;
if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) {
- s->s_inodes_count = should_be;
+ sb->s_inodes_count = should_be;
ext2fs_mark_super_dirty(fs);
}
}
/*
* Verify the group descriptors....
*/
- first_block = fs->super->s_first_data_block;
- last_block = first_block + blocks_per_group;
+ first_block = sb->s_first_data_block;
+ last_block = ext2fs_blocks_count(sb)-1;
+ csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
for (i = 0; i < fs->group_desc_count; i++) {
pctx.group = i;
-
- if (i == fs->group_desc_count - 1)
- last_block = fs->super->s_blocks_count;
- if ((fs->group_desc[i].bg_block_bitmap < first_block) ||
- (fs->group_desc[i].bg_block_bitmap >= last_block)) {
- pctx.blk = fs->group_desc[i].bg_block_bitmap;
- if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx)) {
- fs->group_desc[i].bg_block_bitmap = 0;
- ctx->invalid_block_bitmap_flag[i]++;
- ctx->invalid_bitmaps++;
+
+ if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
+ first_block = ext2fs_group_first_block2(fs, i);
+ last_block = ext2fs_group_last_block2(fs, i);
+ }
+
+ if ((ext2fs_block_bitmap_loc(fs, i) < first_block) ||
+ (ext2fs_block_bitmap_loc(fs, i) > last_block)) {
+ pctx.blk = ext2fs_block_bitmap_loc(fs, i);
+ if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx))
+ ext2fs_block_bitmap_loc_set(fs, i, 0);
+ }
+ if (ext2fs_block_bitmap_loc(fs, i) == 0) {
+ ctx->invalid_block_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ if ((ext2fs_inode_bitmap_loc(fs, i) < first_block) ||
+ (ext2fs_inode_bitmap_loc(fs, i) > last_block)) {
+ pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
+ if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx))
+ ext2fs_inode_bitmap_loc_set(fs, i, 0);
+ }
+ if (ext2fs_inode_bitmap_loc(fs, i) == 0) {
+ ctx->invalid_inode_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ if ((ext2fs_inode_table_loc(fs, i) < first_block) ||
+ ((ext2fs_inode_table_loc(fs, i) +
+ fs->inode_blocks_per_group - 1) > last_block)) {
+ pctx.blk = ext2fs_inode_table_loc(fs, i);
+ if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx))
+ ext2fs_inode_table_loc_set(fs, i, 0);
+ }
+ if (ext2fs_inode_table_loc(fs, i) == 0) {
+ ctx->invalid_inode_table_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ free_blocks += ext2fs_bg_free_blocks_count(fs, i);
+ free_inodes += ext2fs_bg_free_inodes_count(fs, i);
+
+ if ((ext2fs_bg_free_blocks_count(fs, i) > sb->s_blocks_per_group) ||
+ (ext2fs_bg_free_inodes_count(fs, i) > sb->s_inodes_per_group) ||
+ (ext2fs_bg_used_dirs_count(fs, i) > sb->s_inodes_per_group))
+ ext2fs_unmark_valid(fs);
+
+ should_be = 0;
+ if (!ext2fs_group_desc_csum_verify(fs, i)) {
+ pctx.csum1 = ext2fs_bg_checksum(fs, i);
+ pctx.csum2 = ext2fs_group_desc_csum(fs, i);
+ if (fix_problem(ctx, PR_0_GDT_CSUM, &pctx)) {
+ ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT);
+ ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT);
+ ext2fs_bg_itable_unused_set(fs, i, 0);
+ should_be = 1;
+ }
+ ext2fs_unmark_valid(fs);
+ }
+
+ if (!csum_flag &&
+ (ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) ||
+ ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) ||
+ ext2fs_bg_itable_unused(fs, i) != 0)) {
+ if (fix_problem(ctx, PR_0_GDT_UNINIT, &pctx)) {
+ ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT);
+ ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT);
+ ext2fs_bg_itable_unused_set(fs, i, 0);
+ should_be = 1;
}
+ ext2fs_unmark_valid(fs);
}
- if ((fs->group_desc[i].bg_inode_bitmap < first_block) ||
- (fs->group_desc[i].bg_inode_bitmap >= last_block)) {
- pctx.blk = fs->group_desc[i].bg_inode_bitmap;
- if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx)) {
- fs->group_desc[i].bg_inode_bitmap = 0;
- ctx->invalid_inode_bitmap_flag[i]++;
- ctx->invalid_bitmaps++;
+
+ if (i == fs->group_desc_count - 1 &&
+ ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT)) {
+ if (fix_problem(ctx, PR_0_BB_UNINIT_LAST, &pctx)) {
+ ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT);
+ should_be = 1;
}
+ ext2fs_unmark_valid(fs);
}
- if ((fs->group_desc[i].bg_inode_table < first_block) ||
- ((fs->group_desc[i].bg_inode_table +
- fs->inode_blocks_per_group - 1) >= last_block)) {
- pctx.blk = fs->group_desc[i].bg_inode_table;
- if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx)) {
- fs->group_desc[i].bg_inode_table = 0;
- ctx->invalid_inode_table_flag[i]++;
- ctx->invalid_bitmaps++;
+
+ if (csum_flag &&
+ (ext2fs_bg_itable_unused(fs, i) > ext2fs_bg_free_inodes_count(fs, i) ||
+ ext2fs_bg_itable_unused(fs, i) > sb->s_inodes_per_group)) {
+ pctx.blk = ext2fs_bg_itable_unused(fs, i);
+ if (fix_problem(ctx, PR_0_GDT_ITABLE_UNUSED, &pctx)) {
+ ext2fs_bg_itable_unused_set(fs, i, 0);
+ should_be = 1;
}
+ ext2fs_unmark_valid(fs);
}
- first_block += fs->super->s_blocks_per_group;
- last_block += fs->super->s_blocks_per_group;
+
+ if (should_be)
+ ext2fs_group_desc_csum_set(fs, i);
+ /* If the user aborts e2fsck by typing ^C, stop right away */
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ return;
}
+
+ ctx->free_blocks = EXT2FS_C2B(fs, free_blocks);
+ ctx->free_inodes = free_inodes;
+
+ if ((ext2fs_free_blocks_count(sb) > ext2fs_blocks_count(sb)) ||
+ (sb->s_free_inodes_count > sb->s_inodes_count))
+ ext2fs_unmark_valid(fs);
+
+
/*
* If we have invalid bitmaps, set the error state of the
* filesystem.
*/
if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) {
- fs->super->s_state &= ~EXT2_VALID_FS;
+ sb->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(fs);
}
clear_problem_context(&pctx);
-
+
#ifndef EXT2_SKIP_UUID
/*
* If the UUID field isn't assigned, assign it.
*/
- if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(s->s_uuid)) {
+ if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid)) {
if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) {
- uuid_generate(s->s_uuid);
- ext2fs_mark_super_dirty(fs);
+ uuid_generate(sb->s_uuid);
+ fs->flags |= EXT2_FLAG_DIRTY;
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
}
}
#endif
-
+
+ /*
+ * Check to see if we should disable the test_fs flag
+ */
+ profile_get_boolean(ctx->profile, "options",
+ "clear_test_fs_flag", 0, 1,
+ &clear_test_fs_flag);
+ if (!(ctx->options & E2F_OPT_READONLY) &&
+ clear_test_fs_flag &&
+ (fs->super->s_flags & EXT2_FLAGS_TEST_FILESYS) &&
+ (fs_proc_check("ext4") || check_for_modules("ext4"))) {
+ if (fix_problem(ctx, PR_0_CLEAR_TESTFS_FLAG, &pctx)) {
+ fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
+ fs->flags |= EXT2_FLAG_DIRTY;
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+ }
+ }
+
/*
* For the Hurd, check to see if the filetype option is set,
* since it doesn't support it.
fs->super->s_feature_incompat &=
~EXT2_FEATURE_INCOMPAT_FILETYPE;
ext2fs_mark_super_dirty(fs);
-
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
}
}
/*
+ * If we have any of the compatibility flags set, we need to have a
+ * revision 1 filesystem. Most kernels will not check the flags on
+ * a rev 0 filesystem and we may have corruption issues because of
+ * the incompatible changes to the filesystem.
+ */
+ if (!(ctx->options & E2F_OPT_READONLY) &&
+ fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
+ (fs->super->s_feature_compat ||
+ fs->super->s_feature_ro_compat ||
+ fs->super->s_feature_incompat) &&
+ fix_problem(ctx, PR_0_FS_REV_LEVEL, &pctx)) {
+ ext2fs_update_dynamic_rev(fs);
+ ext2fs_mark_super_dirty(fs);
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+ }
+
+ /*
* Clean up any orphan inodes, if present.
*/
if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) {
fs->super->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
+ ext2fs_mark_super_dirty(fs);
+ }
+
+ /*
+ * Unfortunately, due to Windows' unfortunate design decision
+ * to configure the hardware clock to tick localtime, instead
+ * of the more proper and less error-prone UTC time, many
+ * users end up in the situation where the system clock is
+ * incorrectly set at the time when e2fsck is run.
+ *
+ * Historically this was usually due to some distributions
+ * having buggy init scripts and/or installers that didn't
+ * correctly detect this case and take appropriate
+ * countermeasures. However, it's still possible, despite the
+ * best efforts of init script and installer authors to not be
+ * able to detect this misconfiguration, usually due to a
+ * buggy or misconfigured virtualization manager or the
+ * installer not having access to a network time server during
+ * the installation process. So by default, we allow the
+ * superblock times to be fudged by up to 24 hours. This can
+ * be disabled by setting options.accept_time_fudge to the
+ * boolean value of false in e2fsck.conf. We also support
+ * options.buggy_init_scripts for backwards compatibility.
+ */
+ profile_get_boolean(ctx->profile, "options", "accept_time_fudge",
+ 0, 1, &accept_time_fudge);
+ profile_get_boolean(ctx->profile, "options", "buggy_init_scripts",
+ 0, accept_time_fudge, &accept_time_fudge);
+ ctx->time_fudge = accept_time_fudge ? 86400 : 0;
+
+ profile_get_boolean(ctx->profile, "options", "broken_system_clock",
+ 0, 0, &broken_system_clock);
+
+ /*
+ * Check to see if the superblock last mount time or last
+ * write time is in the future.
+ */
+ if (!broken_system_clock &&
+ !(ctx->flags & E2F_FLAG_TIME_INSANE) &&
+ fs->super->s_mtime > (__u32) ctx->now) {
+ pctx.num = fs->super->s_mtime;
+ problem = PR_0_FUTURE_SB_LAST_MOUNT;
+ if (fs->super->s_mtime <= (__u32) ctx->now + ctx->time_fudge)
+ problem = PR_0_FUTURE_SB_LAST_MOUNT_FUDGED;
+ if (fix_problem(ctx, problem, &pctx)) {
+ fs->super->s_mtime = ctx->now;
+ fs->flags |= EXT2_FLAG_DIRTY;
+ }
+ }
+ if (!broken_system_clock &&
+ !(ctx->flags & E2F_FLAG_TIME_INSANE) &&
+ fs->super->s_wtime > (__u32) ctx->now) {
+ pctx.num = fs->super->s_wtime;
+ problem = PR_0_FUTURE_SB_LAST_WRITE;
+ if (fs->super->s_wtime <= (__u32) ctx->now + ctx->time_fudge)
+ problem = PR_0_FUTURE_SB_LAST_WRITE_FUDGED;
+ if (fix_problem(ctx, problem, &pctx)) {
+ fs->super->s_wtime = ctx->now;
+ fs->flags |= EXT2_FLAG_DIRTY;
+ }
}
+ /*
+ * Move the ext3 journal file, if necessary.
+ */
+ e2fsck_move_ext3_journal(ctx);
+
+ /*
+ * Fix journal hint, if necessary
+ */
+ e2fsck_fix_ext3_journal_hint(ctx);
+
+ /*
+ * Add dirhash hint if necessary
+ */
+ e2fsck_fix_dirhash_hint(ctx);
+
+ /*
+ * Hide quota inodes if necessary.
+ */
+ e2fsck_hide_quota(ctx);
+
return;
}
+/*
+ * Check to see if we should backup the master sb to the backup super
+ * blocks. Returns non-zero if the sb should be backed up.
+ */
+
+/*
+ * A few flags are set on the fly by the kernel, but only in the
+ * primary superblock. This is actually a bad thing, and we should
+ * try to discourage it in the future. In particular, for the newer
+ * ext4 files, especially EXT4_FEATURE_RO_COMPAT_DIR_NLINK and
+ * EXT3_FEATURE_INCOMPAT_EXTENTS. So some of these may go away in the
+ * future. EXT3_FEATURE_INCOMPAT_RECOVER may also get set when
+ * copying the primary superblock during online resize.
+ *
+ * The kernel will set EXT2_FEATURE_COMPAT_EXT_ATTR, but
+ * unfortunately, we shouldn't ignore it since if it's not set in the
+ * backup, the extended attributes in the filesystem will be stripped
+ * away.
+ *
+ * Well, I'm still going that route for now, 'til I do something
+ * better. Full-fsck after a fresh install is just no good. -ERS
+ */
+#define FEATURE_COMPAT_IGNORE (EXT2_FEATURE_COMPAT_EXT_ATTR)
+#define FEATURE_RO_COMPAT_IGNORE (EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
+ EXT4_FEATURE_RO_COMPAT_DIR_NLINK)
+#define FEATURE_INCOMPAT_IGNORE (EXT3_FEATURE_INCOMPAT_EXTENTS| \
+ EXT3_FEATURE_INCOMPAT_RECOVER)
+
+int check_backup_super_block(e2fsck_t ctx)
+{
+ ext2_filsys fs = ctx->fs;
+ errcode_t retval;
+ dgrp_t g;
+ blk64_t sb;
+ int ret = 0;
+ char buf[SUPERBLOCK_SIZE];
+ struct ext2_super_block *backup_sb;
+
+ /*
+ * If we are already writing out the backup blocks, then we
+ * don't need to test. Also, if the filesystem is invalid, or
+ * the check was aborted or cancelled, we also don't want to
+ * do the backup. If the filesystem was opened read-only then
+ * we can't do the backup.
+ */
+ if (((fs->flags & EXT2_FLAG_MASTER_SB_ONLY) == 0) ||
+ !ext2fs_test_valid(fs) ||
+ (fs->super->s_state & EXT2_ERROR_FS) ||
+ (ctx->flags & (E2F_FLAG_ABORT | E2F_FLAG_CANCEL)) ||
+ (ctx->options & E2F_OPT_READONLY))
+ return 0;
+
+ for (g = 1; g < fs->group_desc_count; g++) {
+ if (!ext2fs_bg_has_super(fs, g))
+ continue;
+
+ sb = fs->super->s_first_data_block +
+ (g * fs->super->s_blocks_per_group);
+ retval = io_channel_read_blk(fs->io, sb, -SUPERBLOCK_SIZE,
+ buf);
+ if (retval)
+ continue;
+ backup_sb = (struct ext2_super_block *) buf;
+#ifdef WORDS_BIGENDIAN
+ ext2fs_swap_super(backup_sb);
+#endif
+ if ((backup_sb->s_magic != EXT2_SUPER_MAGIC) ||
+ (backup_sb->s_rev_level > EXT2_LIB_CURRENT_REV) ||
+ ((backup_sb->s_log_block_size + EXT2_MIN_BLOCK_LOG_SIZE) >
+ EXT2_MAX_BLOCK_LOG_SIZE) ||
+ (EXT2_INODE_SIZE(backup_sb) < EXT2_GOOD_OLD_INODE_SIZE))
+ continue;
+
+#define SUPER_COMPAT_DIFFERENT(x) \
+ ((fs->super->x & ~FEATURE_COMPAT_IGNORE) != \
+ (backup_sb->x & ~FEATURE_COMPAT_IGNORE))
+#define SUPER_INCOMPAT_DIFFERENT(x) \
+ ((fs->super->x & ~FEATURE_INCOMPAT_IGNORE) != \
+ (backup_sb->x & ~FEATURE_INCOMPAT_IGNORE))
+#define SUPER_RO_COMPAT_DIFFERENT(x) \
+ ((fs->super->x & ~FEATURE_RO_COMPAT_IGNORE) != \
+ (backup_sb->x & ~FEATURE_RO_COMPAT_IGNORE))
+#define SUPER_DIFFERENT(x) \
+ (fs->super->x != backup_sb->x)
+
+ if (SUPER_COMPAT_DIFFERENT(s_feature_compat) ||
+ SUPER_INCOMPAT_DIFFERENT(s_feature_incompat) ||
+ SUPER_RO_COMPAT_DIFFERENT(s_feature_ro_compat) ||
+ SUPER_DIFFERENT(s_blocks_count) ||
+ SUPER_DIFFERENT(s_inodes_count) ||
+ memcmp(fs->super->s_uuid, backup_sb->s_uuid,
+ sizeof(fs->super->s_uuid)))
+ ret = 1;
+ break;
+ }
+ return ret;
+}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff