1 files changed, 25 insertions, 0 deletions

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 0e33ca32abf9..1266137406fa 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -157,6 +157,30 @@ smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
         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 @@ struct smb_version_operations smb21_operations = {
         .logoff = SMB2_logoff,
         .tree_connect = SMB2_tcon,
         .tree_disconnect = SMB2_tdis,
+        .is_path_accessible = smb2_is_path_accessible,
 };
 
 struct smb_version_values smb21_values = {