fsck.f2fs: check sector size if formatted from a regular file

This patch check sector size if formatted from a regular file,
write the sector info to superblock from device info.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fsck/mount.c b/fsck/mount.c
index f866c4f..9d08118 100644 (file)
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -1923,6 +1923,38 @@ void build_nat_area_bitmap(struct f2fs_sb_info *sbi)
                        fsck->chk.valid_nat_entry_cnt);
 }
 
+static int check_sector_size(struct f2fs_super_block *sb)
+{
+       int index;
+       u_int32_t log_sectorsize, log_sectors_per_block;
+       u_int8_t *zero_buff;
+
+       zero_buff = calloc(F2FS_BLKSIZE, 1);
+
+       log_sectorsize = log_base_2(config.sector_size);
+       log_sectors_per_block = log_base_2(config.sectors_per_blk);
+
+       if (log_sectorsize != get_sb(log_sectorsize))
+               set_sb(log_sectorsize, log_sectorsize);
+
+       if (log_sectors_per_block != get_sb(log_sectors_per_block))
+               set_sb(log_sectors_per_block, log_sectors_per_block);
+
+       memcpy(zero_buff + F2FS_SUPER_OFFSET, sb, sizeof(*sb));
+       DBG(1, "\tWriting super block, at offset 0x%08x\n", 0);
+       for (index = 0; index < 2; index++) {
+               if (dev_write(zero_buff, index * F2FS_BLKSIZE, F2FS_BLKSIZE)) {
+                       MSG(1, "\tError: While while writing supe_blk \
+                               on disk!!! index : %d\n", index);
+                       free(zero_buff);
+                       return -1;
+               }
+       }
+
+       free(zero_buff);
+       return 0;
+}
+
 int f2fs_do_mount(struct f2fs_sb_info *sbi)
 {
        struct f2fs_checkpoint *cp = NULL;
@@ -1936,6 +1968,10 @@ int f2fs_do_mount(struct f2fs_sb_info *sbi)
                        return -1;
        }
 
+       ret = check_sector_size(sbi->raw_super);
+       if (ret)
+               return -1;
+
        print_raw_sb_info(F2FS_RAW_SUPER(sbi));
 
        init_sb_info(sbi);