d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

linuxkpi: Implement kcalloc() based on mallocarray()

Browse Source 
This means we now get integer overflow protection, which Linux code
might expect as it is also provided by kcalloc() in Linux.
This commit is contained in:
Kristof Provost 2018-01-07 13:39:12 +00:00
parent 6273ba66f2
commit e70c77ca17
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/compat/linuxkpi/common/include/linux/slab.h
View File

@ -46,7 +46,6 @@ MALLOC_DECLARE(M_KMALLOC);
#define kzalloc(size, flags) kmalloc(size, (flags) | __GFP_ZERO)
#define kzalloc_node(size, flags, node) kmalloc(size, (flags) | __GFP_ZERO)
#define kfree_const(ptr) kfree(ptr)
#define kcalloc(n, size, flags) kmalloc((n) * (size), (flags) | __GFP_ZERO)
#define vzalloc(size) __vmalloc(size, GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO, 0)
#define vfree(arg) kfree(arg)
#define kvfree(arg) kfree(arg)
@ -100,6 +99,13 @@ kmalloc(size_t size, gfp_t flags)
return (malloc(size, M_KMALLOC, linux_check_m_flags(flags)));
}
static inline void *
kcalloc(size_t n, size_t size, gfp_t flags)
{
flags |= __GFP_ZERO;
return (mallocarray(n, size, M_KMALLOC, linux_check_m_flags(flags)));
}
static inline void *
__vmalloc(size_t size, gfp_t flags, int other)
{