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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /security/sandbox/linux/SandboxLogging.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'security/sandbox/linux/SandboxLogging.h')
-rw-r--r--security/sandbox/linux/SandboxLogging.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/security/sandbox/linux/SandboxLogging.h b/security/sandbox/linux/SandboxLogging.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_SandboxLogging_h
+#define mozilla_SandboxLogging_h
+
+// This header defines the SANDBOX_LOG_ERROR macro used in the Linux
+// sandboxing code. It uses Android logging on Android and writes to
+// stderr otherwise. Android logging has severity levels; currently
+// only "error" severity is exposed here, and this isn't marked when
+// writing to stderr.
+//
+// The format strings are processed by Chromium SafeSPrintf, which
+// doesn't accept size modifiers or %u because it uses C++11 variadic
+// templates to obtain the actual argument types; all decimal integer
+// formatting uses %d. See safe_sprintf.h for more details.
+
+// Build SafeSPrintf without assertions to avoid a dependency on
+// Chromium logging. This doesn't affect safety; it just means that
+// type mismatches (pointer vs. integer) always result in unexpanded
+// %-directives instead of crashing. See also the moz.build files,
+// which apply NDEBUG to the .cc file.
+#ifndef NDEBUG
+#define NDEBUG 1
+#include "base/strings/safe_sprintf.h"
+#undef NDEBUG
+#else
+#include "base/strings/safe_sprintf.h"
+#endif
+
+namespace mozilla {
+// Logs the formatted string (marked with "error" severity, if supported).
+void SandboxLogError(const char* aMessage);
+}
+
+#define SANDBOX_LOG_LEN 256
+
+// Formats a log message and logs it (with "error" severity, if supported).
+//
+// Note that SafeSPrintf doesn't accept size modifiers or %u; all
+// decimal integers are %d, because it uses C++11 variadic templates
+// to use the actual argument type.
+#define SANDBOX_LOG_ERROR(fmt, args...) do { \
+ char _sandboxLogBuf[SANDBOX_LOG_LEN]; \
+ ::base::strings::SafeSPrintf(_sandboxLogBuf, fmt, ## args); \
+ ::mozilla::SandboxLogError(_sandboxLogBuf); \
+} while(0)
+
+#endif // mozilla_SandboxLogging_h