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| author | Namjae Jeon <linkinjeon@kernel.org> | 2021-11-21 05:32:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-01 11:04:43 +0300 |
| commit | 522cd5c6554a0bb56dae7baa2c6155970de4be1d (patch) | |
| tree | 955d3dc8af222fbd34107278d64902ce16fa5475 /fs/ksmbd | |
| parent | b05576526e84e50718f24409086d0d51f3d3371c (diff) | |
| download | linux-522cd5c6554a0bb56dae7baa2c6155970de4be1d.tar.xz | |
ksmbd: contain default data stream even if xattr is empty
commit 1ec72153ff434ce75bace3044dc89a23a05d7064 upstream.
If xattr is not supported like exfat or fat, ksmbd server doesn't
contain default data stream in FILE_STREAM_INFORMATION response. It will
cause ppt or doc file update issue if local filesystem is such as ones.
This patch move goto statement to contain it.
Fixes: 9f6323311c70 ("ksmbd: add default data stream name in FILE_STREAM_INFORMATION")
Cc: stable@vger.kernel.org # v5.15
Acked-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ksmbd')
| -rw-r--r-- | fs/ksmbd/smb2pdu.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index fe16c80f0de3..69525ab7b2ca 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -4450,6 +4450,12 @@ static void get_file_stream_info(struct ksmbd_work *work, &stat); file_info = (struct smb2_file_stream_info *)rsp->Buffer; + buf_free_len = + smb2_calc_max_out_buf_len(work, 8, + le32_to_cpu(req->OutputBufferLength)); + if (buf_free_len < 0) + goto out; + xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); if (xattr_list_len < 0) { goto out; @@ -4458,12 +4464,6 @@ static void get_file_stream_info(struct ksmbd_work *work, goto out; } - buf_free_len = - smb2_calc_max_out_buf_len(work, 8, - le32_to_cpu(req->OutputBufferLength)); - if (buf_free_len < 0) - goto out; - while (idx < xattr_list_len) { stream_name = xattr_list + idx; streamlen = strlen(stream_name); @@ -4507,6 +4507,7 @@ static void get_file_stream_info(struct ksmbd_work *work, file_info->NextEntryOffset = cpu_to_le32(next); } +out: if (!S_ISDIR(stat.mode) && buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) { file_info = (struct smb2_file_stream_info *) @@ -4515,14 +4516,13 @@ static void get_file_stream_info(struct ksmbd_work *work, "::$DATA", 7, conn->local_nls, 0); streamlen *= 2; file_info->StreamNameLength = cpu_to_le32(streamlen); - file_info->StreamSize = 0; - file_info->StreamAllocationSize = 0; + file_info->StreamSize = cpu_to_le64(stat.size); + file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9); nbytes += sizeof(struct smb2_file_stream_info) + streamlen; } /* last entry offset should be 0 */ file_info->NextEntryOffset = 0; -out: kvfree(xattr_list); rsp->OutputBufferLength = cpu_to_le32(nbytes); |