From 930c887e0fb88dcf1907f268960330c17999b5a3 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 25 Sep 2021 07:03:06 -0600 Subject: lib: Add memdup() Add a function to duplicate a memory region, a little like strdup(). Signed-off-by: Simon Glass --- include/linux/string.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux/string.h') diff --git a/include/linux/string.h b/include/linux/string.h index dd255f2163..3169c93796 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -129,6 +129,19 @@ extern void * memchr(const void *,int,__kernel_size_t); void *memchr_inv(const void *, int, size_t); #endif +/** + * memdup() - allocate a buffer and copy in the contents + * + * Note that this returns a valid pointer even if @len is 0 + * + * @src: data to copy in + * @len: number of bytes to copy + * @return allocated buffer with the copied contents, or NULL if not enough + * memory is available + * + */ +char *memdup(const void *src, size_t len); + unsigned long ustrtoul(const char *cp, char **endp, unsigned int base); unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base); -- cgit v1.2.3