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SMB3: passthru query info doesn't check for SMB3 FSCTL passthru 

The passthrough queries from user space tools like smbinfo can be either
SMB3 QUERY_INFO or SMB3 FSCTL, but we are not checking for the latter.
Temporarily we return EOPNOTSUPP for SMB3 FSCTL passthrough requests
but once compounding fsctls is fixed can enable.

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
This commit is contained in:
Steve French 2019-03-13 02:40:07 -05:00
parent 779ede040d
commit 31ba4331d5
2 changed files with 21 additions and 6 deletions
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3
fs/cifs/cifs_ioctl.h
View File

@ -43,6 +43,9 @@ struct smb_snapshot_array {
/* snapshots[]; */
} __packed;
/* query_info flags */
#define PASSTHRU_QUERY_INFO 0x00000000
#define PASSTHRU_FSCTL 0x00000001
struct smb_query_info {
__u32 info_type;
__u32 file_info_class;

24
fs/cifs/smb2ops.c
View File

@ -1390,15 +1390,27 @@ smb2_ioctl_query_info(const unsigned int xid,
smb2_set_next_command(tcon, &rqst[0]);
/* Query */
memset(&qi_iov, 0, sizeof(qi_iov));
rqst[1].rq_iov = qi_iov;
rqst[1].rq_nvec = 1;
if (qi.flags & PASSTHRU_FSCTL) {
/* Can eventually relax perm check since server enforces too */
if (!capable(CAP_SYS_ADMIN))
rc = -EPERM;
else /* TBD: Add code to compound FSCTL */
rc = -EOPNOTSUPP;
} else if (qi.flags == PASSTHRU_QUERY_INFO) {
memset(&qi_iov, 0, sizeof(qi_iov));
rqst[1].rq_iov = qi_iov;
rqst[1].rq_nvec = 1;
rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
qi.file_info_class, qi.info_type,
qi.additional_information,
rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
COMPOUND_FID, qi.file_info_class,
qi.info_type, qi.additional_information,
qi.input_buffer_length,
qi.output_buffer_length, buffer);
} else { /* unknown flags */
cifs_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
rc = -EINVAL;
}
if (rc)
goto iqinf_exit;
smb2_set_next_command(tcon, &rqst[1]);