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    Subject[PATCH v1 1/4] lib: hex2bin converts ascii hexadecimal string to binary
    Date
    Similar to the kgdb_hex2mem() code, hex2bin converts a string
    to binary using the hex_to_bin() library call.

    Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
    ---
    include/linux/kernel.h | 1 +
    lib/hexdump.c | 16 ++++++++++++++++
    2 files changed, 17 insertions(+), 0 deletions(-)

    diff --git a/include/linux/kernel.h b/include/linux/kernel.h
    index 2b0a35e..69ddea8 100644
    --- a/include/linux/kernel.h
    +++ b/include/linux/kernel.h
    @@ -396,6 +396,7 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
    }

    extern int hex_to_bin(char ch);
    +extern void hex2bin(unsigned char *mem, char *buf, int count);

    #ifndef pr_fmt
    #define pr_fmt(fmt) fmt
    diff --git a/lib/hexdump.c b/lib/hexdump.c
    index 5d7a480..66f96bb 100644
    --- a/lib/hexdump.c
    +++ b/lib/hexdump.c
    @@ -34,6 +34,22 @@ int hex_to_bin(char ch)
    EXPORT_SYMBOL(hex_to_bin);

    /**
    + * hex2bin - convert an ascii hexadecimal string to its binary representation
    + * @mem: result
    + * @buf: ascii hexadecimal string
    + * @count: result length
    + */
    +void hex2bin(unsigned char *mem, char *buf, int count)
    +{
    + while (count--) {
    + *mem = hex_to_bin(*buf++) << 4;
    + *mem += hex_to_bin(*buf++);
    + mem++;
    + }
    +}
    +EXPORT_SYMBOL(hex2bin);
    +
    +/**
    * 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
    --
    1.7.2.2


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