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authorPavel Shilovsky <pshilovsky@samba.org>2012-09-18 16:20:28 -0700
committerSteve French <smfrench@gmail.com>2012-09-24 21:46:27 -0500
commit7a5cfb1965854132f2f382eade8c6ce2eeb6f692 (patch)
tree93f982d31fbcf23418423319be26ca77b364f83c /fs/cifs
parent1d8c4c0009deda22b436b1f0ab9f2885863717fc (diff)
CIFS: Add SMB2 support for flush
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/smb2ops.c8
-rw-r--r--fs/cifs/smb2pdu.c38
-rw-r--r--fs/cifs/smb2pdu.h15
-rw-r--r--fs/cifs/smb2proto.h2
4 files changed, 63 insertions, 0 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 0fd58016825..d81e1daeb8f 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -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 = {
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 231e9701ab8..ff374063f4e 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -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;
+}
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 0e962cbf816..f5bf63f6697 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -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 */
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 624d344e1a5..51e6cd185c7 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -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);