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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /security/sandbox/linux/SandboxLogging.h | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (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.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/security/sandbox/linux/SandboxLogging.h b/security/sandbox/linux/SandboxLogging.h new file mode 100644 index 000000000..88891adfb --- /dev/null +++ b/security/sandbox/linux/SandboxLogging.h @@ -0,0 +1,52 @@ +/* -*- 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 |