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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
/*
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* memory buffer pool support
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*/
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#ifndef _LINUX_MEMPOOL_H
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#define _LINUX_MEMPOOL_H
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#include <linux/wait.h>
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#include <linux/compiler.h>
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struct kmem_cache;
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typedef void * (mempool_alloc_t)(gfp_t gfp_mask, void *pool_data);
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typedef void (mempool_free_t)(void *element, void *pool_data);
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typedef struct mempool_s {
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spinlock_t lock;
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int min_nr; /* nr of elements at *elements */
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int curr_nr; /* Current nr of elements at *elements */
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void **elements;
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void *pool_data;
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mempool_alloc_t *alloc;
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mempool_free_t *free;
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wait_queue_head_t wait;
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} mempool_t;
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extern mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
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mempool_free_t *free_fn, void *pool_data);
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extern mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn,
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mempool_free_t *free_fn, void *pool_data,
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gfp_t gfp_mask, int nid);
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extern int mempool_resize(mempool_t *pool, int new_min_nr);
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extern void mempool_destroy(mempool_t *pool);
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extern void *mempool_alloc(mempool_t *pool, gfp_t gfp_mask) __malloc;
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extern void mempool_free(void *element, mempool_t *pool);
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/*
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* A mempool_alloc_t and mempool_free_t that get the memory from
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* a slab cache that is passed in through pool_data.
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* Note: the slab cache may not have a ctor function.
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*/
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void *mempool_alloc_slab(gfp_t gfp_mask, void *pool_data);
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void mempool_free_slab(void *element, void *pool_data);
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static inline mempool_t *
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mempool_create_slab_pool(int min_nr, struct kmem_cache *kc)
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{
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return mempool_create(min_nr, mempool_alloc_slab, mempool_free_slab,
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(void *) kc);
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}
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/*
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* a mempool_alloc_t and a mempool_free_t to kmalloc and kfree the
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* amount of memory specified by pool_data
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*/
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void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data);
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void mempool_kfree(void *element, void *pool_data);
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static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size)
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{
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return mempool_create(min_nr, mempool_kmalloc, mempool_kfree,
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(void *) size);
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}
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/*
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* A mempool_alloc_t and mempool_free_t for a simple page allocator that
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* allocates pages of the order specified by pool_data
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*/
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void *mempool_alloc_pages(gfp_t gfp_mask, void *pool_data);
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void mempool_free_pages(void *element, void *pool_data);
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static inline mempool_t *mempool_create_page_pool(int min_nr, int order)
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{
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return mempool_create(min_nr, mempool_alloc_pages, mempool_free_pages,
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(void *)(long)order);
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}
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#endif /* _LINUX_MEMPOOL_H */
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