smb: move filesystem_vol_info into common/fscc.h

The structure definition on the server side is specified in MS-CIFS
2.2.8.2.3, but we should instead refer to MS-FSCC 2.5.9, just as the
client side does.

Modify the following places:

  - smb3_fs_vol_info -> filesystem_vol_info
  - SerialNumber -> VolumeSerialNumber
  - VolumeLabelSize -> VolumeLabelLength

Then move it into common header file.

Signed-off-by: ZhangGuoDong <zhangguodong@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Reviewed-by: Steve French <stfrench@microsoft.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: ZhangGuoDong

fs/smb/client/smb2pdu.c

@@ -6147,8 +6147,8 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
 		max_len = sizeof(struct smb3_fs_ss_info);
 		min_len = sizeof(struct smb3_fs_ss_info);
 	} else if (level == FS_VOLUME_INFORMATION) {
-		max_len = sizeof(struct smb3_fs_vol_info) + MAX_VOL_LABEL_LEN;
-		min_len = sizeof(struct smb3_fs_vol_info);
+		max_len = sizeof(struct filesystem_vol_info) + MAX_VOL_LABEL_LEN;
+		min_len = sizeof(struct filesystem_vol_info);
 	} else {
 		cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level);
 		return -EINVAL;
@@ -6203,9 +6203,9 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
 		tcon->perf_sector_size =
 			le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf);
 	} else if (level == FS_VOLUME_INFORMATION) {
-		struct smb3_fs_vol_info *vol_info = (struct smb3_fs_vol_info *)
+		struct filesystem_vol_info *vol_info = (struct filesystem_vol_info *)
 			(offset + (char *)rsp);
-		tcon->vol_serial_number = vol_info->VolumeSerialNumber;
+		tcon->vol_serial_number = le32_to_cpu(vol_info->VolumeSerialNumber);
 		tcon->vol_create_time = vol_info->VolumeCreationTime;
 	}
 

fs/smb/common/fscc.h

@@ -447,6 +447,17 @@ typedef struct {
 	__le32 BytesPerSector;
 } __packed FILE_SYSTEM_SIZE_INFO;	/* size info, level 0x103 */
 
+/* volume info struct - see MS-FSCC 2.5.9 */
+#define MAX_VOL_LABEL_LEN	32
+struct filesystem_vol_info {
+	__le64	VolumeCreationTime;
+	__le32	VolumeSerialNumber;
+	__le32	VolumeLabelLength; /* includes trailing null */
+	__u8	SupportsObjects; /* True if eg like NTFS, supports objects */
+	__u8	Reserved;
+	__u8	VolumeLabel[]; /* variable len */
+} __packed;
+
 /* See MS-FSCC 2.5.10 */
 typedef struct {
 	__le32 DeviceType;

fs/smb/common/smb2pdu.h

@@ -1635,17 +1635,6 @@ struct smb311_posix_qinfo {
 	 */
 } __packed;
 
-/* volume info struct - see MS-FSCC 2.5.9 */
-#define MAX_VOL_LABEL_LEN	32
-struct smb3_fs_vol_info {
-	__le64	VolumeCreationTime;
-	__u32	VolumeSerialNumber;
-	__le32	VolumeLabelLength; /* includes trailing null */
-	__u8	SupportsObjects; /* True if eg like NTFS, supports objects */
-	__u8	Reserved;
-	__u8	VolumeLabel[]; /* variable len */
-} __packed;
-
 /* See MS-SMB2 2.2.23 through 2.2.25 */
 struct smb2_oplock_break {
 	struct smb2_hdr hdr;

fs/smb/server/smb2pdu.c

@@ -5583,13 +5583,14 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work,
 		serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(),
 				      strlen(ksmbd_netbios_name()));
 		/* Taking dummy value of serial number*/
-		info->SerialNumber = cpu_to_le32(serial_crc);
+		info->VolumeSerialNumber = cpu_to_le32(serial_crc);
 		len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
 					share->name, PATH_MAX,
 					conn->local_nls, 0);
 		len = len * 2;
-		info->VolumeLabelSize = cpu_to_le32(len);
+		info->VolumeLabelLength = cpu_to_le32(len);
 		info->Reserved = 0;
+		info->SupportsObjects = 0;
 		sz = sizeof(struct filesystem_vol_info) + len;
 		rsp->OutputBufferLength = cpu_to_le32(sz);
 		break;

fs/smb/server/smb_common.h

@@ -90,14 +90,6 @@ struct smb_negotiate_rsp {
 	__le16 ByteCount;
 } __packed;
 
-struct filesystem_vol_info {
-	__le64 VolumeCreationTime;
-	__le32 SerialNumber;
-	__le32 VolumeLabelSize;
-	__le16 Reserved;
-	__le16 VolumeLabel[];
-} __packed;
-
 #define EXTENDED_INFO_MAGIC 0x43667364	/* Cfsd */
 #define STRING_LENGTH 28