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-rw-r--r--bin/confgen/os.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/bin/confgen/os.c b/bin/confgen/os.c
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--- /dev/null
+++ b/bin/confgen/os.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <confgen/os.h>
+
+int
+set_user(FILE *fd, const char *user) {
+ struct passwd *pw;
+
+ pw = getpwnam(user);
+ if (pw == NULL) {
+ errno = EINVAL;
+ return (-1);
+ }
+ return (fchown(fileno(fd), pw->pw_uid, -1));
+}