diff options
| author |   Hyunchul Lee <hyc.lee@gmail.com> | 2026-05-04 20:03:14 +0900 |
|---|---|---|
| committer |   Namjae Jeon <linkinjeon@kernel.org> | 2026-05-08 23:50:59 +0900 |
| commit | de08874bae7db49d77085a34b62ebb491ea68e2e (patch) | |
| tree | b12c44d97626222f5798f099b976c99368ac0bc3 | |
| parent | ntfs: avoid use-after-free of index inode in ntfs_inode_sync_filename() (diff) | |
ntfs: match ntfs_resident_attr_min_value_length with $AttrDef
Update ntfs_resident_attr_min_value_length() to align with $AttrDef.
The $VOLUME_NAME is allowed to have the size of 0.
The Windows 11 $AttrDef values are as follows:
Attribute Name (ID) Size (Min-Max) Flags
$STANDARD_INFORMATION (16) 48-72 Resident
$ATTRIBUTE_LIST (32) No Limit Non-resident
$FILE_NAME (48) 68-578 Resident, Index
$OBJECT_ID (64) 0-256 Resident
$SECURITY_DESCRIPTOR (80) No Limit Non-resident
$VOLUME_NAME (96) 2-256 Resident
$VOLUME_INFORMATION (112) 12-12 Resident
$DATA (128) No Limit (None)
$INDEX_ROOT (144) No Limit Resident
$INDEX_ALLOCATION (160) No Limit Non-resident
$BITMAP (176) No Limit Non-resident
$REPARSE_POINT (192) 0-16384 Non-resident
$EA_INFORMATION (208) 8-8 Resident
$EA (224) 0-65536 (None)
$LOGGED_UTILITY_STREAM (256) 0-65536 Non-resident
Reported-by: woot000 <woot000@woot000.com>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
| -rw-r--r-- | fs/ntfs/attrib.c | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/fs/ntfs/attrib.c b/fs/ntfs/attrib.c index 97b660eaa00c..7ab3571cc5f9 100644 --- a/fs/ntfs/attrib.c +++ b/fs/ntfs/attrib.c @@ -583,24 +583,13 @@ static u32 ntfs_resident_attr_min_value_length(const __le32 type) case AT_STANDARD_INFORMATION: return offsetof(struct standard_information, ver) + sizeof(((struct standard_information *)0)->ver.v1.reserved12); - case AT_ATTRIBUTE_LIST: - return offsetof(struct attr_list_entry, name); case AT_FILE_NAME: - return offsetof(struct file_name_attr, file_name); - case AT_OBJECT_ID: - return sizeof(struct guid); - case AT_SECURITY_DESCRIPTOR: - return sizeof(struct security_descriptor_relative); + return offsetof(struct file_name_attr, file_name) + + sizeof(__le16) * 1; case AT_VOLUME_INFORMATION: return sizeof(struct volume_information); - case AT_INDEX_ROOT: - return sizeof(struct index_root); - case AT_REPARSE_POINT: - return offsetof(struct reparse_point, reparse_data); case AT_EA_INFORMATION: return sizeof(struct ea_information); - case AT_EA: - return offsetof(struct ea_attr, ea_name) + 1; default: return 0; } |