diff options
author | David Benjamin <davidben@chromium.org> | 2015-05-16 02:08:49 +0300 |
---|---|---|
committer | Adam Langley <agl@google.com> | 2015-05-21 20:59:48 +0300 |
commit | 0b635c52b241af78b69addecbb84c7d55f3cabb4 (patch) | |
tree | ffd170189c575fbe8e359a6d4dbe79d841b9138f /crypto/test | |
parent | 3e3090dc50193f32219d24f62145bfbe3d8ee7fc (diff) |
Add malloc test support to unit tests.
Currently far from passing and I haven't even tried with a leak checker yet.
Also bn_test is slow.
Change-Id: I4fe2783aa5f7897839ca846062ae7e4a367d2469
Reviewed-on: https://boringssl-review.googlesource.com/4794
Reviewed-by: Adam Langley <agl@google.com>
Diffstat (limited to 'crypto/test')
-rw-r--r-- | crypto/test/CMakeLists.txt | 1 | ||||
-rw-r--r-- | crypto/test/malloc.cc | 140 |
2 files changed, 141 insertions, 0 deletions
diff --git a/crypto/test/CMakeLists.txt b/crypto/test/CMakeLists.txt index 0d5ca811..84a61741 100644 --- a/crypto/test/CMakeLists.txt +++ b/crypto/test/CMakeLists.txt @@ -4,4 +4,5 @@ add_library( OBJECT file_test.cc + malloc.cc ) diff --git a/crypto/test/malloc.cc b/crypto/test/malloc.cc new file mode 100644 index 00000000..a24f77f4 --- /dev/null +++ b/crypto/test/malloc.cc @@ -0,0 +1,140 @@ +/* Copyright (c) 2014, Google Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ + +#include <openssl/base.h> + +#if defined(__has_feature) +#if __has_feature(address_sanitizer) || __has_feature(memory_sanitizer) +#define OPENSSL_ASAN +#endif +#endif + +// This file isn't built on ARM or Aarch64 because we link statically in those +// builds and trying to override malloc in a static link doesn't work. It's also +// disabled on ASan builds as this interferes with ASan's malloc interceptor. +// +// TODO(davidben): See if this and ASan's and MSan's interceptors can be made to +// coexist. +#if defined(__linux__) && !defined(OPENSSL_ARM) && \ + !defined(OPENSSL_AARCH64) && !defined(OPENSSL_ASAN) + +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <new> + + +/* This file defines overrides for the standard allocation functions that allow + * a given allocation to be made to fail for testing. If the program is run + * with MALLOC_NUMBER_TO_FAIL set to a base-10 number then that allocation will + * return NULL. If MALLOC_ABORT_ON_FAIL is also defined then the allocation + * will abort() rather than return NULL. + * + * This code is not thread safe. */ + +static uint64_t current_malloc_count = 0; +static uint64_t malloc_number_to_fail = 0; +static char failure_enabled = 0, abort_on_fail = 0; +static int in_call = 0; + +extern "C" { +/* These are other names for the standard allocation functions. */ +extern void *__libc_malloc(size_t size); +extern void *__libc_calloc(size_t num_elems, size_t size); +extern void *__libc_realloc(void *ptr, size_t size); +} + +static void exit_handler(void) { + if (failure_enabled && current_malloc_count > malloc_number_to_fail) { + _exit(88); + } +} + +static void cpp_new_handler() { + // Return to try again. It won't fail a second time. + return; +} + +/* should_fail_allocation returns true if the current allocation should fail. */ +static int should_fail_allocation() { + static int init = 0; + char should_fail; + + if (in_call) { + return 0; + } + + in_call = 1; + + if (!init) { + const char *env = getenv("MALLOC_NUMBER_TO_FAIL"); + if (env != NULL && env[0] != 0) { + char *endptr; + malloc_number_to_fail = strtoull(env, &endptr, 10); + if (*endptr == 0) { + failure_enabled = 1; + atexit(exit_handler); + std::set_new_handler(cpp_new_handler); + } + } + abort_on_fail = (NULL != getenv("MALLOC_ABORT_ON_FAIL")); + init = 1; + } + + in_call = 0; + + if (!failure_enabled) { + return 0; + } + + should_fail = (current_malloc_count == malloc_number_to_fail); + current_malloc_count++; + + if (should_fail && abort_on_fail) { + abort(); + } + return should_fail; +} + +extern "C" { + +void *malloc(size_t size) { + if (should_fail_allocation()) { + return NULL; + } + + return __libc_malloc(size); +} + +void *calloc(size_t num_elems, size_t size) { + if (should_fail_allocation()) { + return NULL; + } + + return __libc_calloc(num_elems, size); +} + +void *realloc(void *ptr, size_t size) { + if (should_fail_allocation()) { + return NULL; + } + + return __libc_realloc(ptr, size); +} + +} // extern "C" + +#endif /* defined(linux) && !ARM && !AARCH64 && !ASAN */ |