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++;
+ }
+ 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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