Commit 86e14e12 authored by Ronnie Sahlberg's avatar Ronnie Sahlberg Committed by Steve French
Browse files

cifs: prepare SMB2_Flush to be usable in compounds 



Create smb2_flush_init() and smb2_flush_free() so we can use the flush command
in compounds.

Signed-off-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 22442179

fs/cifs/smb2pdu.c

+40 −18
Original line number Diff line number Diff line
@@ -3287,44 +3287,64 @@ SMB2_echo(struct TCP_Server_Info *server) 
	return rc;

}



void

SMB2_flush_free(struct smb_rqst *rqst)

{

	if (rqst && rqst->rq_iov)

		cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */

}



int

SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,

	   u64 volatile_fid)

SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst,

		struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid)

{

	struct smb_rqst rqst;

	struct smb2_flush_req *req;

	struct cifs_ses *ses = tcon->ses;

	struct kvec iov[1];

	struct kvec rsp_iov;

	int resp_buftype;

	int rc = 0;

	int flags = 0;

	struct kvec *iov = rqst->rq_iov;

	unsigned int total_len;



	cifs_dbg(FYI, "Flush\n");



	if (!ses || !(ses->server))

		return -EIO;

	int rc;



	rc = smb2_plain_req_init(SMB2_FLUSH, tcon, (void **) &req, &total_len);

	if (rc)

		return rc;



	if (smb3_encryption_required(tcon))

		flags |= CIFS_TRANSFORM_REQ;



	req->PersistentFileId = persistent_fid;

	req->VolatileFileId = volatile_fid;



	iov[0].iov_base = (char *)req;

	iov[0].iov_len = total_len;



	return 0;

}



int

SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,

	   u64 volatile_fid)

{

	struct cifs_ses *ses = tcon->ses;

	struct smb_rqst rqst;

	struct kvec iov[1];

	struct kvec rsp_iov = {NULL, 0};

	int resp_buftype = CIFS_NO_BUFFER;

	int flags = 0;

	int rc = 0;



	cifs_dbg(FYI, "flush\n");

	if (!ses || !(ses->server))

		return -EIO;



	if (smb3_encryption_required(tcon))

		flags |= CIFS_TRANSFORM_REQ;



	memset(&rqst, 0, sizeof(struct smb_rqst));

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

	rqst.rq_iov = iov;

	rqst.rq_nvec = 1;



	rc = SMB2_flush_init(xid, &rqst, tcon, persistent_fid, volatile_fid);

	if (rc)

		goto flush_exit;



	rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);

	cifs_small_buf_release(req);



	if (rc != 0) {

		cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE);
@@ -3332,6 +3352,8 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, 
				     rc);

	}



 flush_exit:

	SMB2_flush_free(&rqst);

	free_rsp_buf(resp_buftype, rsp_iov.iov_base);

	return rc;

}

fs/cifs/smb2proto.h

+4 −0
Original line number Diff line number Diff line
@@ -158,6 +158,10 @@ extern int SMB2_close_init(struct cifs_tcon *tcon, struct smb_rqst *rqst, 
extern void SMB2_close_free(struct smb_rqst *rqst);

extern int SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon,

		      u64 persistent_file_id, u64 volatile_file_id);

extern int SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst,

			   struct cifs_tcon *tcon,

			   u64 persistent_file_id, u64 volatile_file_id);

extern void SMB2_flush_free(struct smb_rqst *rqst);

extern int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,

			   u64 persistent_file_id, u64 volatile_file_id,

			   struct smb2_file_all_info *data);