diff options
Diffstat (limited to 'lib/vsprintf.c')
| -rw-r--r-- | lib/vsprintf.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 0deaaaf2b14e..cb5bc04ff82b 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -598,6 +598,24 @@ static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width, return string(buf, end, mac_addr, field_width, precision, flags & ~SPECIAL); } +static char *ip6_addr_string(char *buf, char *end, u8 *addr, int field_width, + int precision, int flags) +{ + char ip6_addr[8 * 5]; /* (8 * 4 hex digits), 7 colons and trailing zero */ + char *p = ip6_addr; + int i; + + for (i = 0; i < 8; i++) { + p = pack_hex_byte(p, addr[2 * i]); + p = pack_hex_byte(p, addr[2 * i + 1]); + if (!(flags & SPECIAL) && i != 7) + *p++ = ':'; + } + *p = '\0'; + + return string(buf, end, ip6_addr, field_width, precision, flags & ~SPECIAL); +} + /* * Show a '%p' thing. A kernel extension is that the '%p' is followed * by an extra set of alphanumeric characters that are extended format @@ -611,6 +629,8 @@ static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width, * addresses (not the name nor the flags) * - 'M' For a 6-byte MAC address, it prints the address in the * usual colon-separated hex notation + * - '6' For a IPv6 address prints the address in network-ordered 16 bit hex + * with colon separators * * Note: The difference between 'S' and 'F' is that on ia64 and ppc64 * function pointers are really function descriptors, which contain a @@ -628,6 +648,8 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field return resource_string(buf, end, ptr, field_width, precision, flags); case 'M': return mac_address_string(buf, end, ptr, field_width, precision, flags); + case '6': + return ip6_addr_string(buf, end, ptr, field_width, precision, flags); } flags |= SMALL; if (field_width == -1) { |