mirror of
https://github.com/GrapheneOS/hardened_malloc.git
synced 2024-06-26 14:42:27 +00:00
e3686ae457
- tag slab allocations with [1..14] tags - tag freed slab allocations with the "15" tag value to detect accesses to freed slab memory - when generating tag value for a slab slot, always exclude most recent tag value for that slot (to make use-after-free detection more reliable) and most recent tag values of its immediate neighbors (to detect linear overflows and underflows)
30 lines
794 B
C
30 lines
794 B
C
#ifndef MEMORY_H
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#define MEMORY_H
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#include <stdbool.h>
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#include <stddef.h>
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#ifdef __linux__
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#define HAVE_COMPATIBLE_MREMAP
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#endif
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int get_metadata_key(void);
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void *memory_map(size_t size);
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#ifdef HAS_ARM_MTE
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void *memory_map_mte(size_t size);
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#endif
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bool memory_map_fixed(void *ptr, size_t size);
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bool memory_unmap(void *ptr, size_t size);
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bool memory_protect_ro(void *ptr, size_t size);
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bool memory_protect_rw(void *ptr, size_t size);
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bool memory_protect_rw_metadata(void *ptr, size_t size);
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#ifdef HAVE_COMPATIBLE_MREMAP
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bool memory_remap(void *old, size_t old_size, size_t new_size);
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bool memory_remap_fixed(void *old, size_t old_size, void *new, size_t new_size);
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#endif
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bool memory_purge(void *ptr, size_t size);
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bool memory_set_name(void *ptr, size_t size, const char *name);
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#endif
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