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use s_max_mnt_count to detect mke2fs generated partition

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- Old tool will set it to 10 while mke2fs will set it to -1.
- For now, only tag it.
- TODO: possibly add different policy per image tool version.

bug: 32246772
Test: check dmesg after reboot

(cherry picked from commit 95e233f9ff)

Change-Id: Icd4758e240009d7b37df2d8a0e2a20d5ddbe4906
This commit is contained in:
Keun-young Park 2017-04-07 14:16:42 -07:00
parent 57d4c59559
commit 1c438c1baa
1 changed files with 4 additions and 1 deletions
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5
fs_mgr/fs_mgr.cpp
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@ -283,7 +283,10 @@ static int do_quota_with_shutdown_check(char *blk_device, char *fs_type,
return force_check;
}
*fs_stat |= FS_STAT_IS_EXT4;
//TODO check if it is new version or not
LINFO << "superblock s_max_mnt_count:" << sb.s_max_mnt_count << "," << blk_device;
if (sb.s_max_mnt_count == 0xffff) { // -1 (int16) in ext2, but uint16 in ext4
*fs_stat |= FS_STAT_NEW_IMAGE_VERSION;
}
if ((sb.s_feature_incompat & EXT4_FEATURE_INCOMPAT_RECOVER) != 0 ||
(sb.s_state & EXT4_VALID_FS) == 0) {
LINFO << __FUNCTION__ << "(): was not clealy shutdown, state flag:"