virtualization: beef virtualization code

[elogind.git] / src / detect-virt.c

diff --git a/src/detect-virt.c b/src/detect-virt.c
new file mode 100644 (file)
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--- /dev/null
+++ b/src/detect-virt.c
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+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd 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 2 of the License, or
+  (at your option) any later version.
+
+  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <string.h>
+
+#include "util.h"
+
+int main(int argc, char *argv[]) {
+        int r;
+        const char *id;
+
+        /* This is mostly intended to be used for scripts which want
+         * to detect whether we are being run in a virtualized
+         * environment or not */
+
+        if ((r = detect_virtualization(&id)) < 0) {
+                log_error("Failed to check for virtualization: %s", strerror(-r));
+                return EXIT_FAILURE;
+        }
+
+        if (r > 0)
+                printf("%s\n", id);
+
+        return r == 0;
+}