lib: hex2bin converts ascii hexadecimal string to binary
Similar to the kgdb_hex2mem() code, hex2bin converts a string to binary using the hex_to_bin() library call. Changelog: - Replace parameter names with src/dst (based on David Howell's comment) - Add 'const' where needed (based on David Howell's comment) - Replace int with size_t (based on David Howell's comment) Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Serge E. Hallyn <serge@hallyn.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
parent
ce6ada35bd
commit
dc88e46029
2 changed files with 17 additions and 0 deletions
|
@ -265,6 +265,7 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
|
|||
}
|
||||
|
||||
extern int hex_to_bin(char ch);
|
||||
extern void hex2bin(u8 *dst, const char *src, size_t count);
|
||||
|
||||
/*
|
||||
* General tracing related utility functions - trace_printk(),
|
||||
|
|
|
@ -33,6 +33,22 @@ int hex_to_bin(char ch)
|
|||
}
|
||||
EXPORT_SYMBOL(hex_to_bin);
|
||||
|
||||
/**
|
||||
* hex2bin - convert an ascii hexadecimal string to its binary representation
|
||||
* @dst: binary result
|
||||
* @src: ascii hexadecimal string
|
||||
* @count: result length
|
||||
*/
|
||||
void hex2bin(u8 *dst, const char *src, size_t count)
|
||||
{
|
||||
while (count--) {
|
||||
*dst = hex_to_bin(*src++) << 4;
|
||||
*dst += hex_to_bin(*src++);
|
||||
dst++;
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL(hex2bin);
|
||||
|
||||
/**
|
||||
* hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory
|
||||
* @buf: data blob to dump
|
||||
|
|
Loading…
Reference in a new issue