Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 116 insertions, 0 deletions

diff --git a/source3/lib/smbd_shim.c b/source3/lib/smbd_shim.c
new file mode 100644
index 0000000..c7c64f7
--- /dev/null
+++ b/source3/lib/smbd_shim.c
@@ -0,0 +1,116 @@
+/*
+   Unix SMB/CIFS implementation.
+   Runtime plugin adapter for various "smbd"-functions.
+
+   Copyright (C) Gerald (Jerry) Carter          2004.
+   Copyright (C) Andrew Bartlett                2011.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Shim functions required due to the horrible dependency mess
+   in Samba. */
+
+#include "includes.h"
+#include "smbd_shim.h"
+
+static struct smbd_shim shim;
+
+void set_smbd_shim(const struct smbd_shim *shim_functions)
+{
+	shim = *shim_functions;
+}
+
+bool change_to_root_user(void)
+{
+	if (shim.change_to_root_user) {
+		return shim.change_to_root_user();
+	}
+	return false;
+}
+
+bool become_authenticated_pipe_user(struct auth_session_info *session_info)
+{
+	if (shim.become_authenticated_pipe_user) {
+		return shim.become_authenticated_pipe_user(session_info);
+	}
+
+	return false;
+}
+
+bool unbecome_authenticated_pipe_user(void)
+{
+	if (shim.unbecome_authenticated_pipe_user) {
+		return shim.unbecome_authenticated_pipe_user();
+	}
+
+	return false;
+}
+
+/**
+ * The following two functions need to be called from inside the low-level BRL
+ * code for oplocks correctness in smbd.  Since other utility binaries also
+ * link in some of the brl code directly, these dummy functions are necessary
+ * to avoid needing to link in the oplocks code and its dependencies to all of
+ * the utility binaries.
+ */
+void contend_level2_oplocks_begin(files_struct *fsp,
+				  enum level2_contention_type type)
+{
+	if (shim.contend_level2_oplocks_begin) {
+		shim.contend_level2_oplocks_begin(fsp, type);
+	}
+	return;
+}
+
+void contend_level2_oplocks_end(files_struct *fsp,
+				enum level2_contention_type type)
+{
+	if (shim.contend_level2_oplocks_end) {
+		shim.contend_level2_oplocks_end(fsp, type);
+	}
+	return;
+}
+
+void become_root(void)
+{
+	if (shim.become_root) {
+		shim.become_root();
+	}
+        return;
+}
+
+void unbecome_root(void)
+{
+	if (shim.unbecome_root) {
+		shim.unbecome_root();
+	}
+	return;
+}
+
+void exit_server(const char *reason)
+{
+	if (shim.exit_server) {
+		shim.exit_server(reason);
+	}
+	exit(1);
+}
+
+void exit_server_cleanly(const char *const reason)
+{
+	if (shim.exit_server_cleanly) {
+		shim.exit_server_cleanly(reason);
+	}
+	exit(0);
+}