CIFS: Add SMB2 support for is_path_accessible
that needs for a successful mount through SMB2 protocol.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 0e33ca3..1266137 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -157,6 +157,30 @@
return rc;
}
+static int
+smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path)
+{
+ int rc;
+ __u64 persistent_fid, volatile_fid;
+ __le16 *utf16_path;
+
+ utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
+ if (!utf16_path)
+ return -ENOMEM;
+
+ rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
+ FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0);
+ if (rc) {
+ kfree(utf16_path);
+ return rc;
+ }
+
+ rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid);
+ kfree(utf16_path);
+ return rc;
+}
+
struct smb_version_operations smb21_operations = {
.setup_request = smb2_setup_request,
.check_receive = smb2_check_receive,
@@ -174,6 +198,7 @@
.logoff = SMB2_logoff,
.tree_connect = SMB2_tcon,
.tree_disconnect = SMB2_tdis,
+ .is_path_accessible = smb2_is_path_accessible,
};
struct smb_version_values smb21_values = {