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authorNamjae Jeon <linkinjeon@kernel.org>2022-09-22 17:27:34 +0300
committerSteve French <stfrench@microsoft.com>2022-10-05 09:15:44 +0300
commitd5919f2a1459083bd0aaede7fc44e945290e44df (patch)
tree0b14c7ce2bdfb4ab5a9ab79f2c2d9f7efdbc864e /fs/ksmbd
parentf6c2b201da7588f7f7688ddc99b7bb000609129c (diff)
downloadlinux-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.c26
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: