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smb: do some cleanups

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Modify the following places:

  - Add documentation references
  - ATTR_REPARSE -> ATTR_REPARSE_POINT: consistent with MS-SMB 2.2.1.2.1
  - Remove unused File Attribute flags from server, if the server uses
    them in the future, we can move the client-side definitions to common
  - Remove unused SMB1_CLIENT_GUID_SIZE from server

Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
ChenXiaoSong 2025-11-02 15:30:58 +08:00 committed by Steve French
parent 464b913993
commit 95e8c1bfa5
6 changed files with 45 additions and 47 deletions
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51
fs/smb/client/cifspdu.h
View File

@ -19,6 +19,7 @@
#define BAD_PROT 0xFFFF
/* SMB command codes:
* See MS-CIFS 2.2.2.1
* Note some commands have minimal (wct=0,bcc=0), or uninteresting, responses
* (ie which include no useful data other than the SMB error code itself).
* This can allow us to avoid response buffer allocations and copy in some cases
@ -152,6 +153,7 @@
/*
* SMB flag definitions
* See MS-CIFS 2.2.3.1
*/
#define SMBFLG_EXTD_LOCK 0x01 /* server supports lock-read write-unlock smb */
#define SMBFLG_RCV_POSTED 0x02 /* obsolete */
@ -165,6 +167,8 @@
/*
* SMB flag2 definitions
* See MS-CIFS 2.2.3.1
* MS-SMB 2.2.3.1
*/
#define SMBFLG2_KNOWS_LONG_NAMES cpu_to_le16(1) /* can send long (non-8.3)
path names in response */
@ -225,29 +229,30 @@
/*
* File Attribute flags
*/
#define ATTR_READONLY 0x0001
#define ATTR_HIDDEN 0x0002
#define ATTR_SYSTEM 0x0004
#define ATTR_VOLUME 0x0008
#define ATTR_DIRECTORY 0x0010
#define ATTR_ARCHIVE 0x0020
#define ATTR_DEVICE 0x0040
#define ATTR_NORMAL 0x0080
#define ATTR_TEMPORARY 0x0100
#define ATTR_SPARSE 0x0200
#define ATTR_REPARSE 0x0400
#define ATTR_COMPRESSED 0x0800
#define ATTR_OFFLINE 0x1000 /* ie file not immediately available -
on offline storage */
#define ATTR_NOT_CONTENT_INDEXED 0x2000
#define ATTR_ENCRYPTED 0x4000
#define ATTR_POSIX_SEMANTICS 0x01000000
#define ATTR_BACKUP_SEMANTICS 0x02000000
#define ATTR_DELETE_ON_CLOSE 0x04000000
#define ATTR_SEQUENTIAL_SCAN 0x08000000
#define ATTR_RANDOM_ACCESS 0x10000000
#define ATTR_NO_BUFFERING 0x20000000
#define ATTR_WRITE_THROUGH 0x80000000
#define ATTR_READONLY 0x0001 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_HIDDEN 0x0002 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_SYSTEM 0x0004 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_VOLUME 0x0008
#define ATTR_DIRECTORY 0x0010 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_ARCHIVE 0x0020 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_DEVICE 0x0040
#define ATTR_NORMAL 0x0080 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_TEMPORARY 0x0100 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_SPARSE 0x0200 /* See MS-SMB 2.2.1.2.1 */
#define ATTR_REPARSE_POINT 0x0400 /* See MS-SMB 2.2.1.2.1 */
#define ATTR_COMPRESSED 0x0800 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_OFFLINE 0x1000 /* See MS-SMB 2.2.1.2.1
ie file not immediately available -
on offline storage */
#define ATTR_NOT_CONTENT_INDEXED 0x2000 /* See MS-SMB 2.2.1.2.1 */
#define ATTR_ENCRYPTED 0x4000 /* See MS-SMB 2.2.1.2.1 */
#define ATTR_POSIX_SEMANTICS 0x0100000 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_BACKUP_SEMANTICS 0x0200000 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_DELETE_ON_CLOSE 0x0400000 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_SEQUENTIAL_SCAN 0x0800000 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_RANDOM_ACCESS 0x1000000 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_NO_BUFFERING 0x2000000 /* See MS-CIFS 2.2.1.2.3 */
#define ATTR_WRITE_THROUGH 0x8000000 /* See MS-CIFS 2.2.1.2.3 */
/* ShareAccess flags */
#define FILE_NO_SHARE 0x00000000

10
fs/smb/client/readdir.c
View File

@ -98,7 +98,7 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
default:
break;
}
} else if (fattr->cf_cifsattrs & ATTR_REPARSE) {
} else if (fattr->cf_cifsattrs & ATTR_REPARSE_POINT) {
reparse_need_reval = true;
}
@ -138,7 +138,7 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
* reparse tag and ctime haven't changed.
*/
rc = 0;
if (fattr->cf_cifsattrs & ATTR_REPARSE) {
if (fattr->cf_cifsattrs & ATTR_REPARSE_POINT) {
if (likely(reparse_inode_match(inode, fattr))) {
fattr->cf_mode = inode->i_mode;
fattr->cf_rdev = inode->i_rdev;
@ -190,7 +190,7 @@ cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
* TODO: go through all documented reparse tags to see if we can
* reasonably map some of them to directories vs. files vs. symlinks
*/
if ((fattr->cf_cifsattrs & ATTR_REPARSE) &&
if ((fattr->cf_cifsattrs & ATTR_REPARSE_POINT) &&
cifs_reparse_point_to_fattr(cifs_sb, fattr, &data))
goto out_reparse;
@ -258,7 +258,7 @@ cifs_posix_to_fattr(struct cifs_fattr *fattr, struct smb2_posix_info *info,
fattr->cf_nlink = le32_to_cpu(info->HardLinks);
fattr->cf_cifsattrs = le32_to_cpu(info->DosAttributes);
if (fattr->cf_cifsattrs & ATTR_REPARSE)
if (fattr->cf_cifsattrs & ATTR_REPARSE_POINT)
fattr->cf_cifstag = le32_to_cpu(info->ReparseTag);
/* The Mode field in the response can now include the file type as well */
@ -316,7 +316,7 @@ static void cifs_fulldir_info_to_fattr(struct cifs_fattr *fattr,
__dir_info_to_fattr(fattr, info);
/* See MS-FSCC 2.4.14, 2.4.19 */
if (fattr->cf_cifsattrs & ATTR_REPARSE)
if (fattr->cf_cifsattrs & ATTR_REPARSE_POINT)
fattr->cf_cifstag = le32_to_cpu(di->EaSize);
cifs_fill_common_info(fattr, cifs_sb);
}

8
fs/smb/client/reparse.h
View File

@ -93,7 +93,7 @@ static inline bool reparse_inode_match(struct inode *inode,
if (cinode->reparse_tag != IO_REPARSE_TAG_INTERNAL &&
cinode->reparse_tag != fattr->cf_cifstag)
return false;
return (cinode->cifsAttrs & ATTR_REPARSE) &&
return (cinode->cifsAttrs & ATTR_REPARSE_POINT) &&
timespec64_equal(&ctime, &fattr->cf_ctime);
}
@ -107,7 +107,7 @@ static inline bool cifs_open_data_reparse(struct cifs_open_info_data *data)
attrs = le32_to_cpu(fi->DosAttributes);
if (data->reparse_point) {
attrs |= ATTR_REPARSE;
attrs |= ATTR_REPARSE_POINT;
fi->DosAttributes = cpu_to_le32(attrs);
}
@ -116,12 +116,12 @@ static inline bool cifs_open_data_reparse(struct cifs_open_info_data *data)
attrs = le32_to_cpu(fi->Attributes);
if (data->reparse_point) {
attrs |= ATTR_REPARSE;
attrs |= ATTR_REPARSE_POINT;
fi->Attributes = cpu_to_le32(attrs);
}
}
ret = attrs & ATTR_REPARSE;
ret = attrs & ATTR_REPARSE_POINT;
return ret;
}

2
fs/smb/client/smb1ops.c
View File

@ -647,7 +647,7 @@ static int cifs_query_path_info(const unsigned int xid,
if (!rc) {
move_cifs_info_to_smb2(&data->fi, &fi);
data->reparse_point = le32_to_cpu(fi.Attributes) & ATTR_REPARSE;
data->reparse_point = le32_to_cpu(fi.Attributes) & ATTR_REPARSE_POINT;
}
#ifdef CONFIG_CIFS_XATTR

2
fs/smb/client/smb2inode.c
View File

@ -50,7 +50,7 @@ static inline __u32 file_create_options(struct dentry *dentry)
if (dentry) {
ci = CIFS_I(d_inode(dentry));
if (ci->cifsAttrs & ATTR_REPARSE)
if (ci->cifsAttrs & ATTR_REPARSE_POINT)
return OPEN_REPARSE_POINT;
}
return 0;

19
fs/smb/server/smb_common.h
View File

@ -38,17 +38,6 @@
#define F_CREATED 2
#define F_OVERWRITTEN 3
/*
* File Attribute flags
*/
#define ATTR_POSIX_SEMANTICS 0x01000000
#define ATTR_BACKUP_SEMANTICS 0x02000000
#define ATTR_DELETE_ON_CLOSE 0x04000000
#define ATTR_SEQUENTIAL_SCAN 0x08000000
#define ATTR_RANDOM_ACCESS 0x10000000
#define ATTR_NO_BUFFERING 0x20000000
#define ATTR_WRITE_THROUGH 0x80000000
/* Combinations of file access permission bits */
#define SET_FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA \
| FILE_READ_ATTRIBUTES \
@ -80,11 +69,15 @@
FILE_EXECUTE | FILE_DELETE_CHILD | \
FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES)
#define SMB_COM_NEGOTIATE 0x72
#define SMB1_CLIENT_GUID_SIZE (16)
#define SMB_COM_NEGOTIATE 0x72 /* See MS-CIFS 2.2.2.1 */
/* See MS-CIFS 2.2.3.1 */
#define SMBFLG_RESPONSE 0x80 /* this PDU is a response from server */
/*
* See MS-CIFS 2.2.3.1
* MS-SMB 2.2.3.1
*/
#define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
#define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
#define SMBFLG2_ERR_STATUS cpu_to_le16(0x4000)