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ksmbd: fill sids in SMB_FIND_FILE_POSIX_INFO response

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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>
This commit is contained in:
Namjae Jeon 2022-09-22 23:27:34 +09:00 committed by Steve French
parent f6c2b201da
commit d5919f2a14
1 changed files with 20 additions and 6 deletions
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26
fs/ksmbd/smb2pdu.c
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@ -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: