unimore/kernel-hacking-2024-linux-steffo
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udf: Do not mark possibly inconsistent filesystems as closed

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If logical volume integrity descriptor contains non-closed integrity
type when mounting the volume, there are high chances that the volume is
not consistent (device was detached before the filesystem was
unmounted). Don't touch integrity type of such volume so that fsck can
recognize it and check such filesystem.

Reported-by: Pali Rohár <pali.rohar@gmail.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2018-02-27 18:55:31 +01:00
parent 7b1f641776
commit b72e632c6c
2 changed files with 7 additions and 2 deletions
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8
fs/udf/super.c
View file

@ -1988,7 +1988,10 @@ static void udf_open_lvid(struct super_block *sb)
lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
ktime_get_real_ts(&ts);
udf_time_to_disk_stamp(&lvid->recordingDateAndTime, ts);
lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN);
if (le32_to_cpu(lvid->integrityType) == LVID_INTEGRITY_TYPE_CLOSE)
lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN);
else
UDF_SET_FLAG(sb, UDF_FLAG_INCONSISTENT);
lvid->descTag.descCRC = cpu_to_le16(
crc_itu_t(0, (char *)lvid + sizeof(struct tag),
@ -2028,7 +2031,8 @@ static void udf_close_lvid(struct super_block *sb)
lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_INCONSISTENT))
lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
lvid->descTag.descCRC = cpu_to_le16(
crc_itu_t(0, (char *)lvid + sizeof(struct tag),

1
fs/udf/udf_sb.h
View file

@ -29,6 +29,7 @@
#define UDF_FLAG_SESSION_SET 15
#define UDF_FLAG_LASTBLOCK_SET 16
#define UDF_FLAG_BLOCKSIZE_SET 17
#define UDF_FLAG_INCONSISTENT 18
#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002