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smb/server: get compression format in get_file_compression_info()

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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>
This commit is contained in:
ChenXiaoSong 2026-06-08 14:01:27 +00:00 committed by Steve French
parent 7eeb7b6772
commit 5560f97164
1 changed files with 6 additions and 1 deletions
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7
fs/smb/server/smb2pdu.c
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@ -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;