From: ChenXiaoSong <chenxiaosong@kylinos.cn>
Date: Mon, 8 Jun 2026 14:01:27 +0000 (+0000)
Subject: smb/server: get compression format in get_file_compression_info()
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5560f971645ce357ac0d2859376cf4205d44a5bf;p=thirdparty%2Flinux.git

smb/server: get compression format in get_file_compression_info()

I have added `filecompressioninfo` subcommand to `smbinfo`
in cifs-utils.git.

Example:

  1. client: smbinfo setcompression lznt1 /mnt/file
  2. client: smbinfo filecompressioninfo /mnt/file
             Compressed File Size: 104857600
             Compression Format: 2 (LZNT1)
             Compression Unit Shift: 0
             Chunk Shift: 0
             Cluster Shift: 0

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

diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 4aed23a0fc0a3..6258a8a92c566 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -5279,6 +5279,7 @@ static int get_file_compression_info(struct smb2_query_info_rsp *rsp,
 {
 	struct smb2_file_comp_info *file_info;
 	struct kstat stat;
+	u16 fmt;
 	int ret;
 
 	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
@@ -5286,9 +5287,13 @@ static int get_file_compression_info(struct smb2_query_info_rsp *rsp,
 	if (ret)
 		return ret;
 
+	ret = ksmbd_vfs_get_compression(fp, &fmt);
+	if (ret)
+		return ret;
+
 	file_info = (struct smb2_file_comp_info *)rsp->Buffer;
 	file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
-	file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
+	file_info->CompressionFormat = cpu_to_le16(fmt);
 	file_info->CompressionUnitShift = 0;
 	file_info->ChunkShift = 0;
 	file_info->ClusterShift = 0;