Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
mm/util: Introduce kmemdup_array()
Introduce kmemdup_array() API to duplicate `n` number of elements
from a given array. This internally uses kmemdup to allocate and duplicate
the `src` array.
Signed-off-by: Kartik <kkartik@nvidia.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
authored by
Kartik
and committed by
Thierry Reding
7092e9b3
9863084d
+18
+1
include/linux/string.h
+1
include/linux/string.h
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extern void *kmemdup(const void *src, size_t len, gfp_t gfp) __realloc_size(2);
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extern void *kvmemdup(const void *src, size_t len, gfp_t gfp) __realloc_size(2);
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extern char *kmemdup_nul(const char *s, size_t len, gfp_t gfp);
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extern void *kmemdup_array(const void *src, size_t element_size, size_t count, gfp_t gfp);
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extern char **argv_split(gfp_t gfp, const char *str, int *argcp);
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extern void argv_free(char **argv);
+17
mm/util.c
+17
mm/util.c
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EXPORT_SYMBOL(kmemdup);
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/**
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* kmemdup_array - duplicate a given array.
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*
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* @src: array to duplicate.
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* @element_size: size of each element of array.
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* @count: number of elements to duplicate from array.
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* @gfp: GFP mask to use.
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*
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* Return: duplicated array of @src or %NULL in case of error,
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* result is physically contiguous. Use kfree() to free.
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*/
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void *kmemdup_array(const void *src, size_t element_size, size_t count, gfp_t gfp)
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{
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return kmemdup(src, size_mul(element_size, count), gfp);
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}
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EXPORT_SYMBOL(kmemdup_array);
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/**
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* kvmemdup - duplicate region of memory
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*
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* @src: memory region to duplicate