Commit efac779b authored by Ronnie Sahlberg's avatar Ronnie Sahlberg Committed by Steve French
Browse files

cifs: Add support for FSCTL passthrough that write data to the server 



Add support to pass a blob to the server in FSCTL passthrough.

Signed-off-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 0ae3fa4d

fs/cifs/smb2ops.c

+15 −2
Original line number Diff line number Diff line
@@ -1382,6 +1382,18 @@ smb2_ioctl_query_info(const unsigned int xid, 
	oparms.fid = &fid;

	oparms.reconnect = false;



	/*

	 * FSCTL codes encode the special access they need in the fsctl code.

	 */

	if (qi.flags & PASSTHRU_FSCTL) {

		switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {

		case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:

			oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;

			;

			break;

		}

	}



	rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);

	if (rc)

		goto iqinf_exit;
@@ -1399,8 +1411,9 @@ smb2_ioctl_query_info(const unsigned int xid, 


			rc = SMB2_ioctl_init(tcon, &rqst[1],

					     COMPOUND_FID, COMPOUND_FID,

					     qi.info_type, true, NULL,

					     0, CIFSMaxBufSize);

					     qi.info_type, true, buffer,

					     qi.output_buffer_length,

					     CIFSMaxBufSize);

		}

	} else if (qi.flags == PASSTHRU_QUERY_INFO) {

		memset(&qi_iov, 0, sizeof(qi_iov));

fs/cifs/smbfsctl.h

+27 −0
Original line number Diff line number Diff line
@@ -35,6 +35,33 @@ 
 * below). Additional detail on less common ones can be found in MS-FSCC

 * section 2.3.

 */



/*

 * FSCTL values are 32 bits and are constructed as

 * <device 16bits> <access 2bits> <function 12bits> <method 2bits>

 */

/* Device */

#define FSCTL_DEVICE_DFS                 (0x0006 << 16)

#define FSCTL_DEVICE_FILE_SYSTEM         (0x0009 << 16)

#define FSCTL_DEVICE_NAMED_PIPE          (0x0011 << 16)

#define FSCTL_DEVICE_NETWORK_FILE_SYSTEM (0x0014 << 16)

#define FSCTL_DEVICE_MASK                0xffff0000

/* Access */

#define FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS        (0x00 << 14)

#define FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS       (0x01 << 14)

#define FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS      (0x02 << 14)

#define FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS (0x03 << 14)

#define FSCTL_DEVICE_ACCESS_MASK                   0x0000c000

/* Function */

#define FSCTL_DEVICE_FUNCTION_MASK       0x00003ffc

/* Method */

#define FSCTL_DEVICE_METHOD_BUFFERED   0x00

#define FSCTL_DEVICE_METHOD_IN_DIRECT  0x01

#define FSCTL_DEVICE_METHOD_OUT_DIRECT 0x02

#define FSCTL_DEVICE_METHOD_NEITHER    0x03

#define FSCTL_DEVICE_METHOD_MASK       0x00000003





#define FSCTL_DFS_GET_REFERRALS      0x00060194

#define FSCTL_DFS_GET_REFERRALS_EX   0x000601B0

#define FSCTL_REQUEST_OPLOCK_LEVEL_1 0x00090000