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updated random cookie generation using OS primitives and chacha20

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daan 2019-12-22 17:07:01 -08:00
parent 36d168a2d9
commit ba87a39d9f
18 changed files with 378 additions and 97 deletions
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11
include/mimalloc-types.h
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@ -76,6 +76,7 @@ terms of the MIT license. A copy of the license can be found in the file
#endif
#define MI_INTPTR_SIZE (1<<MI_INTPTR_SHIFT)
#define MI_INTPTR_BITS (MI_INTPTR_SIZE*8)
#define KiB ((size_t)1024)
#define MiB (KiB*KiB)
@ -273,6 +274,14 @@ typedef struct mi_page_queue_s {
#define MI_BIN_FULL (MI_BIN_HUGE+1)
// Random context
typedef struct mi_random_cxt_s {
uint32_t input[16];
uint32_t output[16];
int output_available;
} mi_random_ctx_t;
// A heap owns a set of pages.
struct mi_heap_s {
mi_tld_t* tld;
@ -281,7 +290,7 @@ struct mi_heap_s {
volatile _Atomic(mi_block_t*) thread_delayed_free;
uintptr_t thread_id; // thread this heap belongs too
uintptr_t cookie;
uintptr_t random; // random number used for secure allocation
mi_random_ctx_t random; // random number used for secure allocation
size_t page_count; // total number of pages in the `pages` queues.
bool no_reclaim; // `true` if this heap should not reclaim abandoned pages
};