move common stuff from udev/ to private parts of libudev/

1 files changed, 83 insertions, 0 deletions

diff --git a/libudev/libudev-selinux-private.c b/libudev/libudev-selinux-private.c
new file mode 100644
index 0000000000..84f8b6a63f
--- /dev/null
+++ b/libudev/libudev-selinux-private.c
@@ -0,0 +1,83 @@
+/*
+ * libudev - interface to udev device information
+ *
+ * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <selinux/selinux.h>
+
+#include "libudev.h"
+#include "libudev-private.h"
+
+static int selinux_enabled;
+security_context_t selinux_prev_scontext;
+
+void udev_selinux_init(struct udev *udev)
+{
+	/* record the present security context */
+	selinux_enabled = (is_selinux_enabled() > 0);
+	info(udev, "selinux=%i\n", selinux_enabled);
+	if (!selinux_enabled)
+		return;
+	matchpathcon_init_prefix(NULL, udev_get_dev_path(udev));
+	if (getfscreatecon(&selinux_prev_scontext) < 0) {
+		err(udev, "getfscreatecon failed\n");
+		selinux_prev_scontext = NULL;
+	}
+}
+
+void udev_selinux_exit(struct udev *udev)
+{
+	if (!selinux_enabled)
+		return;
+	freecon(selinux_prev_scontext);
+	selinux_prev_scontext = NULL;
+}
+
+void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode)
+{
+	security_context_t scontext = NULL;
+
+	if (!selinux_enabled)
+		return;
+	if (matchpathcon(file, mode, &scontext) < 0) {
+		err(udev, "matchpathcon(%s) failed\n", file);
+		return;
+	} 
+	if (lsetfilecon(file, scontext) < 0)
+		err(udev, "setfilecon %s failed: %m\n", file);
+	freecon(scontext);
+}
+
+void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode)
+{
+	security_context_t scontext = NULL;
+
+	if (!selinux_enabled)
+		return;
+	if (matchpathcon(file, mode, &scontext) < 0) {
+		err(udev, "matchpathcon(%s) failed\n", file);
+		return;
+	}
+	if (setfscreatecon(scontext) < 0)
+		err(udev, "setfscreatecon %s failed: %m\n", file);
+	freecon(scontext);
+}
+
+void udev_selinux_resetfscreatecon(struct udev *udev)
+{
+	if (!selinux_enabled)
+		return;
+	if (setfscreatecon(selinux_prev_scontext) < 0)
+		err(udev, "setfscreatecon failed: %m\n");
+}