On Fri, 2014-09-12 at 20:05 +0100, David Howells wrote:
> Provide a function to convert a buffer of binary data into an unterminated
> ascii hex string representation of that data.
>
> Signed-off-by: David Howells <dhowe...@redhat.com>
> ---
>
> include/linux/kernel.h | 1 +
> lib/hexdump.c | 18 ++++++++++++++++++
> 2 files changed, 19 insertions(+)
>
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
> index 95624bed87ef..7c0ad8e38510 100644
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -496,6 +496,7 @@ static inline char *hex_byte_pack_upper(char *buf, u8
> byte)
>
> extern int hex_to_bin(char ch);
> extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
> +extern char *bin2hex(char *dst, const void *src, size_t count);
>
> bool mac_pton(const char *s, u8 *mac);
>
> diff --git a/lib/hexdump.c b/lib/hexdump.c
> index 8499c810909a..6daf254dddfa 100644
> --- a/lib/hexdump.c
> +++ b/lib/hexdump.c
> @@ -59,6 +59,24 @@ int hex2bin(u8 *dst, const char *src, size_t count)
> EXPORT_SYMBOL(hex2bin);
>
> /**
> + * bin2hex - convert binary data to an ascii hexadecimal string
> + * @dst: ascii hexadecimal result
> + * @src: binary data
> + * @count: binary data length
> + */
> +char *bin2hex(char *dst, const void *src, size_t count)
> +{
> + while (count--) {
> + unsigned char ch = *(const unsigned char *)src;
> + *dst++ = hex_asc[ch >> 4];
> + *dst++ = hex_asc[ch & 0xf];
> + src++;
How about using hex_byte_pack()?
Mimi
> + }
> + return dst;
> +}
> +EXPORT_SYMBOL(bin2hex);
> +
> +/**
> * hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory
> * @buf: data blob to dump
> * @len: number of bytes in the @buf
>
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