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| author | Namjae Jeon <linkinjeon@kernel.org> | 2022-09-22 17:27:34 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-10-05 09:15:44 +0300 |
| commit | d5919f2a1459083bd0aaede7fc44e945290e44df (patch) | |
| tree | 0b14c7ce2bdfb4ab5a9ab79f2c2d9f7efdbc864e /fs/ksmbd | |
| parent | f6c2b201da7588f7f7688ddc99b7bb000609129c (diff) | |
| download | linux-d5919f2a1459083bd0aaede7fc44e945290e44df.tar.xz | |
ksmbd: fill sids in SMB_FIND_FILE_POSIX_INFO response
This patch fill missing sids in SMB_FIND_FILE_POSIX_INFO response.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/ksmbd')
| -rw-r--r-- | fs/ksmbd/smb2pdu.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index 0605e18bd998..6f48b6331bfc 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -4722,7 +4722,11 @@ static int find_file_posix_info(struct smb2_query_info_rsp *rsp, { struct smb311_posix_qinfo *file_info; struct inode *inode = file_inode(fp->filp); + struct user_namespace *user_ns = file_mnt_user_ns(fp->filp); + vfsuid_t vfsuid = i_uid_into_vfsuid(user_ns, inode); + vfsgid_t vfsgid = i_gid_into_vfsgid(user_ns, inode); u64 time; + int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32; file_info = (struct smb311_posix_qinfo *)rsp->Buffer; file_info->CreationTime = cpu_to_le64(fp->create_time); @@ -4739,10 +4743,20 @@ static int find_file_posix_info(struct smb2_query_info_rsp *rsp, file_info->HardLinks = cpu_to_le32(inode->i_nlink); file_info->Mode = cpu_to_le32(inode->i_mode & 0777); file_info->DeviceId = cpu_to_le32(inode->i_rdev); - rsp->OutputBufferLength = - cpu_to_le32(sizeof(struct smb311_posix_qinfo)); - inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo)); - return 0; + + /* + * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)). + * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) + + * sub_auth(4 * 1(num_subauth)) + RID(4). + */ + id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)), + SIDUNIX_USER, (struct smb_sid *)&file_info->Sids[0]); + id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)), + SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]); + + rsp->OutputBufferLength = cpu_to_le32(out_buf_len); + inc_rfc1001_len(rsp_org, out_buf_len); + return out_buf_len; } static int smb2_get_info_file(struct ksmbd_work *work, @@ -4862,8 +4876,8 @@ static int smb2_get_info_file(struct ksmbd_work *work, pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); rc = -EOPNOTSUPP; } else { - rc = find_file_posix_info(rsp, fp, work->response_buf); - file_infoclass_size = sizeof(struct smb311_posix_qinfo); + file_infoclass_size = find_file_posix_info(rsp, fp, + work->response_buf); } break; default: |