From 95e8c1bfa56ebbc243779ee23782b30744da02f6 Mon Sep 17 00:00:00 2001 From: ChenXiaoSong Date: Sun, 2 Nov 2025 15:30:58 +0800 Subject: [PATCH] smb: do some cleanups 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 Acked-by: Namjae Jeon Signed-off-by: Steve French --- fs/smb/client/cifspdu.h | 51 +++++++++++++++++++++----------------- fs/smb/client/readdir.c | 10 ++++---- fs/smb/client/reparse.h | 8 +++--- fs/smb/client/smb1ops.c | 2 +- fs/smb/client/smb2inode.c | 2 +- fs/smb/server/smb_common.h | 19 +++++--------- 6 files changed, 45 insertions(+), 47 deletions(-) diff --git a/fs/smb/client/cifspdu.h b/fs/smb/client/cifspdu.h index a9a853b9011f6..df603bdbe6ba7 100644 --- a/fs/smb/client/cifspdu.h +++ b/fs/smb/client/cifspdu.h @@ -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 diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c index 2fd95c1e91ab6..7ff728503ed1d 100644 --- a/fs/smb/client/readdir.c +++ b/fs/smb/client/readdir.c @@ -98,7 +98,7 @@ retry: 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 @@ retry: * 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); } diff --git a/fs/smb/client/reparse.h b/fs/smb/client/reparse.h index 66269c10beba9..19caab2fd11e6 100644 --- a/fs/smb/client/reparse.h +++ b/fs/smb/client/reparse.h @@ -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; } diff --git a/fs/smb/client/smb1ops.c b/fs/smb/client/smb1ops.c index ca8f3dd7ff63b..a15ebd3f0d50b 100644 --- a/fs/smb/client/smb1ops.c +++ b/fs/smb/client/smb1ops.c @@ -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 diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index 69cb81fa0d3ab..d0aad4821ed4d 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -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; diff --git a/fs/smb/server/smb_common.h b/fs/smb/server/smb_common.h index 13751a4f0888f..a91717da3895e 100644 --- a/fs/smb/server/smb_common.h +++ b/fs/smb/server/smb_common.h @@ -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) -- 2.47.3