Minijail: extract utility functions.

Extract utility functions and add them, together with logging,
to a separate util.(c|h) file.

BUG=chromium-os:33361
TEST=unit tests
TEST=security_Minijail0, security_Minijail_seccomp, platform_CrosDisksArchive.

Change-Id: Ied436a7b27f14ef87198b7bf007634b28cbbd480
Reviewed-on: https://gerrit.chromium.org/gerrit/29492
Tested-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Elly Jones <ellyjones@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Commit-Ready: Jorge Lucangeli Obes <jorgelo@chromium.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/util.h b/util.h
new file mode 100644
index 0000000..8f0fa7b
--- /dev/null
+++ b/util.h
@@ -0,0 +1,33 @@
+/* util.h
+ * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Logging and other utility functions.
+ */
+
+#ifndef _UTIL_H_
+#define _UTIL_H_
+
+#include <stdlib.h>
+#include <syslog.h>
+
+#define die(_msg, ...) do { \
+        syslog(LOG_ERR, "libminijail: " _msg, ## __VA_ARGS__); \
+        abort(); \
+} while (0)
+
+#define pdie(_msg, ...) \
+        die(_msg ": %s", ## __VA_ARGS__, strerror(errno))
+
+#define warn(_msg, ...) \
+        syslog(LOG_WARNING, "libminijail: " _msg, ## __VA_ARGS__)
+
+#define info(_msg, ...) \
+        syslog(LOG_INFO, "libminijail: " _msg, ## __VA_ARGS__)
+
+int lookup_syscall(const char *name);
+const char *lookup_syscall_name(int nr);
+char *strip(char *s);
+
+#endif /* _UTIL_H_ */