forked from Qortal/Brooklyn
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.
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
#ifndef _LINUX_MBCACHE_H
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#define _LINUX_MBCACHE_H
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#include <linux/hash.h>
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#include <linux/list_bl.h>
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#include <linux/list.h>
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#include <linux/atomic.h>
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#include <linux/fs.h>
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struct mb_cache;
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struct mb_cache_entry {
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/* List of entries in cache - protected by cache->c_list_lock */
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struct list_head e_list;
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/* Hash table list - protected by hash chain bitlock */
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struct hlist_bl_node e_hash_list;
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atomic_t e_refcnt;
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/* Key in hash - stable during lifetime of the entry */
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u32 e_key;
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u32 e_referenced:1;
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u32 e_reusable:1;
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/* Block number of hashed block - stable during lifetime of the entry */
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sector_t e_block;
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};
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struct mb_cache *mb_cache_create(int bucket_bits);
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void mb_cache_destroy(struct mb_cache *cache);
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int mb_cache_entry_create(struct mb_cache *cache, gfp_t mask, u32 key,
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sector_t block, bool reusable);
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void __mb_cache_entry_free(struct mb_cache_entry *entry);
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static inline int mb_cache_entry_put(struct mb_cache *cache,
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struct mb_cache_entry *entry)
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{
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if (!atomic_dec_and_test(&entry->e_refcnt))
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return 0;
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__mb_cache_entry_free(entry);
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return 1;
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}
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void mb_cache_entry_delete_block(struct mb_cache *cache, u32 key,
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sector_t block);
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struct mb_cache_entry *mb_cache_entry_get(struct mb_cache *cache, u32 key,
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sector_t block);
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struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache,
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u32 key);
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struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache *cache,
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struct mb_cache_entry *entry);
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void mb_cache_entry_touch(struct mb_cache *cache,
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struct mb_cache_entry *entry);
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#endif /* _LINUX_MBCACHE_H */
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