On 2018/6/13 9:51, Sheng Yong wrote:
> If curseg is an empty segment, it will not be checked. This patch
> introduces fsck_chk_curseg_info() to check SIT/SSA type of cursegs
> to avoid curseg corruption.
>
> Signed-off-by: Sheng Yong <[email protected]>
> ---
> fsck/fsck.c | 34 ++++++++++++++++++++++++++++++++++
> fsck/fsck.h | 1 +
> fsck/main.c | 2 ++
> 3 files changed, 37 insertions(+)
>
> diff --git a/fsck/fsck.c b/fsck/fsck.c
> index 5b6dbc8..cfd939f 100644
> --- a/fsck/fsck.c
> +++ b/fsck/fsck.c
> @@ -2422,6 +2422,40 @@ out:
> return cnt;
> }
>
> +int fsck_chk_curseg_info(struct f2fs_sb_info *sbi)
> +{
> + struct curseg_info *curseg;
> + struct seg_entry *se;
> + struct f2fs_summary_block *sum_blk;
> + int i, ret = 0;
> +
> + for (i = 0; i < NO_CHECK_TYPE; i++) {
> + curseg = CURSEG_I(sbi, i);
> + se = get_seg_entry(sbi, curseg->segno);
> + sum_blk = curseg->sum_blk;
> +
> + if (se->type != i) {
> + ASSERT_MSG("Incorrect curseg [%d]: segno [0x%x] "
> + "type(SIT) [%d]", i, curseg->segno,
> + se->type);
> + se->type = i;
Need to check c.fix_on to decide fix se->type here?
> + ret = -1;
> + }
> + if (i <= CURSEG_COLD_DATA && IS_SUM_DATA_SEG(sum_blk->footer)) {
> + continue;
> + } else if (i > CURSEG_COLD_DATA &&
> IS_SUM_NODE_SEG(sum_blk->footer)) {
> + continue;
> + } else {
> + ASSERT_MSG("Incorrect curseg [%d]: segno [0x%x] "
> + "type(SSA) [%d]", i, curseg->segno,
> + sum_blk->footer.entry_type);
Ditto.
Thanks,
> + ret = -1;
> + }
> + }
> +
> + return ret;
> +}
> +
> int fsck_verify(struct f2fs_sb_info *sbi)
> {
> unsigned int i = 0;
> diff --git a/fsck/fsck.h b/fsck/fsck.h
> index cbe7fc4..5530aff 100644
> --- a/fsck/fsck.h
> +++ b/fsck/fsck.h
> @@ -144,6 +144,7 @@ extern int fsck_chk_dentry_blk(struct f2fs_sb_info *,
> u32, struct child_info *,
> int fsck_chk_inline_dentries(struct f2fs_sb_info *, struct f2fs_node *,
> struct child_info *);
> int fsck_chk_meta(struct f2fs_sb_info *sbi);
> +int fsck_chk_curseg_info(struct f2fs_sb_info *);
> int convert_encrypted_name(unsigned char *, int, unsigned char *, int);
>
> extern void update_free_segments(struct f2fs_sb_info *);
> diff --git a/fsck/main.c b/fsck/main.c
> index 09026c9..f6d12b0 100644
> --- a/fsck/main.c
> +++ b/fsck/main.c
> @@ -578,6 +578,8 @@ static void do_fsck(struct f2fs_sb_info *sbi)
>
> print_cp_state(flag);
>
> + fsck_chk_curseg_info(sbi);
> +
> if (!c.fix_on && !c.bug_on) {
> switch (c.preen_mode) {
> case PREEN_MODE_1:
>
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