diff options
| -rw-r--r-- | lib/vsprintf.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index f3885a8201..fa9fb75800 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -191,6 +191,27 @@ static char *symbol_string(char *buf, char *end, void *ptr, int field_width, int } static noinline_for_stack +char *ip4_addr_string(char *buf, char *end, const u8 *addr, int field_width, + int precision, int flags, const char *fmt) +{ + char ip4_addr[sizeof("255.255.255.255")]; + char *pos; + int i; + + pos = ip4_addr; + + for (i = 0; i < 4; i++) { + pos = number(pos, pos + 3, addr[i], 10, 0, 0, LEFT); + if (i < 3) + *pos++ = '.'; + } + + *pos = 0; + + return string(buf, end, ip4_addr, field_width, precision, flags); +} + +static noinline_for_stack char *uuid_string(char *buf, char *end, const u8 *addr, int field_width, int precision, int flags, const char *fmt) { @@ -267,6 +288,8 @@ char *address_val(char *buf, char *end, const void *addr, * * Right now we handle: * + * - 'I' [4] for IPv4 addresses printed in the usual way + * IPv4 uses dot-separated decimal without leading 0's (1.2.3.4) * - 'S' For symbolic direct pointers * - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form * "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" @@ -297,6 +320,12 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field break; case 'a': return address_val(buf, end, ptr, field_width, precision, flags, fmt); + case 'I': + switch (fmt[1]) { + case '4': + return ip4_addr_string(buf, end, ptr, field_width, precision, flags, fmt); + } + break; } flags |= SMALL; if (field_width == -1) { |