mirror of
https://github.com/Qortal/Brooklyn.git
synced 2025-01-30 23:02:18 +00:00
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.
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/*
|
|
* Copyright © 2008 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*
|
|
* Authors:
|
|
* Jesse Barnes <jbarnes@virtuousgeek.org>
|
|
*
|
|
*/
|
|
#ifndef _DRM_MEM_UTIL_H_
|
|
#define _DRM_MEM_UTIL_H_
|
|
|
|
#include <linux/vmalloc.h>
|
|
|
|
static __inline__ void *drm_calloc_large(size_t nmemb, size_t size)
|
|
{
|
|
if (size != 0 && nmemb > SIZE_MAX / size)
|
|
return NULL;
|
|
|
|
if (size * nmemb <= PAGE_SIZE)
|
|
return kcalloc(nmemb, size, GFP_KERNEL);
|
|
|
|
return __vmalloc(size * nmemb,
|
|
GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
|
|
}
|
|
|
|
/* Modeled after cairo's malloc_ab, it's like calloc but without the zeroing. */
|
|
static __inline__ void *drm_malloc_ab(size_t nmemb, size_t size)
|
|
{
|
|
if (size != 0 && nmemb > SIZE_MAX / size)
|
|
return NULL;
|
|
|
|
if (size * nmemb <= PAGE_SIZE)
|
|
return kmalloc(nmemb * size, GFP_KERNEL);
|
|
|
|
return __vmalloc(size * nmemb,
|
|
GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL);
|
|
}
|
|
|
|
static __inline__ void *drm_malloc_gfp(size_t nmemb, size_t size, gfp_t gfp)
|
|
{
|
|
if (size != 0 && nmemb > SIZE_MAX / size)
|
|
return NULL;
|
|
|
|
if (size * nmemb <= PAGE_SIZE)
|
|
return kmalloc(nmemb * size, gfp);
|
|
|
|
if (gfp & __GFP_RECLAIMABLE) {
|
|
void *ptr = kmalloc(nmemb * size,
|
|
gfp | __GFP_NOWARN | __GFP_NORETRY);
|
|
if (ptr)
|
|
return ptr;
|
|
}
|
|
|
|
return __vmalloc(size * nmemb,
|
|
gfp | __GFP_HIGHMEM, PAGE_KERNEL);
|
|
}
|
|
|
|
static __inline void drm_free_large(void *ptr)
|
|
{
|
|
kvfree(ptr);
|
|
}
|
|
|
|
#endif
|