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CIFS: Add SMB2 support for flush

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Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2012-09-18 16:20:28 -07:00 committed by Steve French
parent 1d8c4c0009
commit 7a5cfb1965
4 changed files with 63 additions and 0 deletions
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8
fs/cifs/smb2ops.c
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@ -329,6 +329,13 @@ smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}
static int
smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_fid *fid)
{
return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}
struct smb_version_operations smb21_operations = {
.setup_request = smb2_setup_request,
.setup_async_request = smb2_setup_async_request,
@ -363,6 +370,7 @@ struct smb_version_operations smb21_operations = {
.open = smb2_open_file,
.set_fid = smb2_set_fid,
.close = smb2_close_file,
.flush = smb2_flush_file,
};
struct smb_version_values smb21_values = {

38
fs/cifs/smb2pdu.c
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@ -1152,3 +1152,41 @@ SMB2_echo(struct TCP_Server_Info *server)
cifs_small_buf_release(req);
return rc;
}
int
SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
u64 volatile_fid)
{
struct smb2_flush_req *req;
struct TCP_Server_Info *server;
struct cifs_ses *ses = tcon->ses;
struct kvec iov[1];
int resp_buftype;
int rc = 0;
cFYI(1, "Flush");
if (ses && (ses->server))
server = ses->server;
else
return -EIO;
rc = small_smb2_init(SMB2_FLUSH, tcon, (void **) &req);
if (rc)
return rc;
req->PersistentFileId = persistent_fid;
req->VolatileFileId = volatile_fid;
iov[0].iov_base = (char *)req;
/* 4 for rfc1002 length field */
iov[0].iov_len = get_rfc1002_length(req) + 4;
rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, 0);
if ((rc != 0) && tcon)
cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE);
free_rsp_buf(resp_buftype, iov[0].iov_base);
return rc;
}

15
fs/cifs/smb2pdu.h
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@ -453,6 +453,21 @@ struct smb2_close_rsp {
__le32 Attributes;
} __packed;
struct smb2_flush_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 24 */
__le16 Reserved1;
__le32 Reserved2;
__u64 PersistentFileId; /* opaque endianness */
__u64 VolatileFileId; /* opaque endianness */
} __packed;
struct smb2_flush_rsp {
struct smb2_hdr hdr;
__le16 StructureSize;
__le16 Reserved;
} __packed;
struct smb2_echo_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 4 */

2
fs/cifs/smb2proto.h
View File

@ -89,6 +89,8 @@ extern int SMB2_open(const unsigned int xid, struct cifs_tcon *tcon,
struct smb2_file_all_info *buf);
extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id);
extern int SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id);
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);