3 places where the VFS backend doesn't handle NULL strings.

(This used to be commit cf109460aff5a8437ab7eba05e4d7316a131080e)

3 files changed, 15 insertions, 0 deletions

diff --git a/source4/smb_server/smb2/fileio.c b/source4/smb_server/smb2/fileio.c
index 567243ba94..0e3df56b42 100644
--- a/source4/smb_server/smb2/fileio.c
+++ b/source4/smb_server/smb2/fileio.c
@@ -80,6 +80,11 @@ void smb2srv_create_recv(struct smb2srv_request *req)
 	/* TODO: parse the blob */
 	ZERO_STRUCT(io->smb2.in.eas);
 
+	/* the VFS backend does not yet handle NULL filenames */
+	if (io->smb2.in.fname == NULL) {
+		io->smb2.in.fname = "";
+	}
+
 	SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_open(req->ntvfs, io));
 }
 
diff --git a/source4/smb_server/smb2/find.c b/source4/smb_server/smb2/find.c
index c594adf7a0..6018f1958f 100644
--- a/source4/smb_server/smb2/find.c
+++ b/source4/smb_server/smb2/find.c
@@ -161,6 +161,11 @@ void smb2srv_find_recv(struct smb2srv_request *req)
 	SMB2SRV_CHECK(smb2_pull_o16s16_string(&req->in, info, req->in.body+0x18, &info->in.pattern));
 	info->in.max_response_size	= IVAL(req->in.body, 0x1C);
 
+	/* the VFS backend does not yet handle NULL patterns */
+	if (info->in.pattern == NULL) {
+		info->in.pattern = "";
+	}
+
 	SMB2SRV_CHECK_FILE_HANDLE(info->in.file.ntvfs);
 	SMB2SRV_CALL_NTVFS_BACKEND(smb2srv_find_backend(state));
 }
diff --git a/source4/smb_server/smb2/tcon.c b/source4/smb_server/smb2/tcon.c
index 50094b806d..7f7d558b16 100644
--- a/source4/smb_server/smb2/tcon.c
+++ b/source4/smb_server/smb2/tcon.c
@@ -394,6 +394,11 @@ void smb2srv_tcon_recv(struct smb2srv_request *req)
 	io->smb2.in.reserved	= SVAL(req->in.body, 0x02);
 	SMB2SRV_CHECK(smb2_pull_o16s16_string(&req->in, io, req->in.body+0x04, &io->smb2.in.path));
 
+	/* the VFS backend does not yet handle NULL paths */
+	if (io->smb2.in.path == NULL) {
+		io->smb2.in.path = "";
+	}
+
 	req->status = smb2srv_tcon_backend(req, io);
 
 	if (req->control_flags & SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY) {