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/* Copyright (c) 2017-2018 Dovecot authors, see the included COPYING file */
#include "test-lib.h"
#if SIZEOF_VOID_P == 8
typedef char uint32max_array_t[4294967295];
#else
typedef char uint32max_array_t[65535];
#endif
#define BIG_MAX POOL_MAX_ALLOC_SIZE
#if defined(_LP64)
#define LITTLE_MAX ((unsigned long long) INT32_MAX)
#else
#define LITTLE_MAX ((unsigned long long) INT16_MAX)
#endif
extern struct pool test_pool;
/* Checks allocations & reallocations for a given type. */
#define CHECK_OVERFLOW(type, nelem, _maxsize) \
do { \
const size_t maxsize = (_maxsize); \
test_begin("mempool overflow - " #type); \
type *ptr = p_new(&test_pool, type, (nelem)); \
test_assert(ptr == POINTER_CAST(maxsize)); \
/* grow: */ \
test_assert(p_realloc_type(&test_pool, ptr, type, (nelem) - 1, (nelem)) == POINTER_CAST(maxsize)); \
/* shrink: */ \
test_assert(p_realloc_type(&test_pool, ptr, type, (nelem), (nelem) - 1) == POINTER_CAST(maxsize - sizeof(type))); \
test_end(); \
} while (0)
static void test_mempool_overflow(void)
{
CHECK_OVERFLOW(uint32max_array_t, LITTLE_MAX, sizeof(uint32max_array_t) * LITTLE_MAX);
CHECK_OVERFLOW(char, BIG_MAX, BIG_MAX);
CHECK_OVERFLOW(uint32_t, BIG_MAX / sizeof(uint32_t), BIG_MAX - 3);
}
enum fatal_test_state fatal_mempool(unsigned int stage)
{
static uint32max_array_t *m1;
static uint32_t *m2;
switch(stage) {
case 0:
test_expect_fatal_string("Trying to allocate");
test_begin("fatal mempool overflow");
m1 = p_new(&test_pool, uint32max_array_t, LITTLE_MAX + 3);
return FATAL_TEST_FAILURE;
case 1:
test_expect_fatal_string("Trying to allocate");
m2 = p_new(&test_pool, uint32_t, BIG_MAX / sizeof(uint32_t) + 1);
return FATAL_TEST_FAILURE;
case 2: /* grow */
test_expect_fatal_string("Trying to reallocate");
m1 = p_realloc_type(&test_pool, m1, uint32max_array_t,
LITTLE_MAX + 2, LITTLE_MAX + 3);
return FATAL_TEST_FAILURE;
case 3:
test_expect_fatal_string("Trying to reallocate");
m2 = p_realloc_type(&test_pool, m2, uint32_t,
BIG_MAX / sizeof(uint32_t),
BIG_MAX / sizeof(uint32_t) + 1);
return FATAL_TEST_FAILURE;
case 4: /* shrink */
test_expect_fatal_string("Trying to reallocate");
m1 = p_realloc_type(&test_pool, m1, uint32max_array_t,
LITTLE_MAX + 3, LITTLE_MAX + 2);
return FATAL_TEST_FAILURE;
case 5:
test_expect_fatal_string("Trying to reallocate");
m2 = p_realloc_type(&test_pool, m2, uint32_t,
BIG_MAX / sizeof(uint32_t) + 2,
BIG_MAX / sizeof(uint32_t) + 1);
return FATAL_TEST_FAILURE;
}
test_expect_fatal_string(NULL);
test_end();
return FATAL_TEST_FINISHED;
}
static const char *pool_test_get_name(pool_t pool ATTR_UNUSED) { return "test"; }
static void pool_test_ref(pool_t pool ATTR_UNUSED) { }
static void pool_test_unref(pool_t *pool) { *pool = NULL; }
static void *pool_test_malloc(pool_t pool ATTR_UNUSED, size_t size) { return POINTER_CAST(size); }
static void pool_test_free(pool_t pool ATTR_UNUSED, void *mem ATTR_UNUSED) { }
static void *pool_test_realloc(pool_t pool ATTR_UNUSED, void *mem ATTR_UNUSED,
size_t old_size ATTR_UNUSED, size_t new_size) {
return POINTER_CAST(new_size);
}
static void pool_test_clear(pool_t pool ATTR_UNUSED) { }
static size_t pool_test_get_max_easy_alloc_size(pool_t pool ATTR_UNUSED) { return 12345; }
static const struct pool_vfuncs test_pool_vfuncs = {
pool_test_get_name,
pool_test_ref,
pool_test_unref,
pool_test_malloc,
pool_test_free,
pool_test_realloc,
pool_test_clear,
pool_test_get_max_easy_alloc_size
};
struct pool test_pool = {
.v = &test_pool_vfuncs,
.alloconly_pool = TRUE,
.datastack_pool = FALSE,
};
void test_mempool(void)
{
test_mempool_overflow();
}
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