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yaml
---
r: 183498
b: refs/heads/master
c: 0159f24
h: refs/heads/master
v: v3
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Joe Perches authored and David S. Miller committed Jan 14, 2010
1 parent 778a918 commit 60d24f0
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Showing 2 changed files with 32 additions and 6 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 3ccd4c6167d3b39d52631767ebbf8b5677c5855d
refs/heads/master: 0159f24ee764927bf44c1a25473bd4517febd21c
36 changes: 31 additions & 5 deletions trunk/lib/vsprintf.c
Original file line number Diff line number Diff line change
Expand Up @@ -699,13 +699,37 @@ static char *mac_address_string(char *buf, char *end, u8 *addr,
return string(buf, end, mac_addr, spec);
}

static char *ip4_string(char *p, const u8 *addr, bool leading_zeros)
static char *ip4_string(char *p, const u8 *addr, const char *fmt)
{
int i;

bool leading_zeros = (fmt[0] == 'i');
int index;
int step;

switch (fmt[2]) {
case 'h':
#ifdef __BIG_ENDIAN
index = 0;
step = 1;
#else
index = 3;
step = -1;
#endif
break;
case 'l':
index = 3;
step = -1;
break;
case 'n':
case 'b':
default:
index = 0;
step = 1;
break;
}
for (i = 0; i < 4; i++) {
char temp[3]; /* hold each IP quad in reverse order */
int digits = put_dec_trunc(temp, addr[i]) - temp;
int digits = put_dec_trunc(temp, addr[index]) - temp;
if (leading_zeros) {
if (digits < 3)
*p++ = '0';
Expand All @@ -717,6 +741,7 @@ static char *ip4_string(char *p, const u8 *addr, bool leading_zeros)
*p++ = temp[digits];
if (i < 3)
*p++ = '.';
index += step;
}
*p = '\0';

Expand Down Expand Up @@ -796,7 +821,7 @@ static char *ip6_compressed_string(char *p, const char *addr)
if (useIPv4) {
if (needcolon)
*p++ = ':';
p = ip4_string(p, &in6.s6_addr[12], false);
p = ip4_string(p, &in6.s6_addr[12], "I4");
}
*p = '\0';

Expand Down Expand Up @@ -836,7 +861,7 @@ static char *ip4_addr_string(char *buf, char *end, const u8 *addr,
{
char ip4_addr[sizeof("255.255.255.255")];

ip4_string(ip4_addr, addr, fmt[0] == 'i');
ip4_string(ip4_addr, addr, fmt);

return string(buf, end, ip4_addr, spec);
}
Expand Down Expand Up @@ -911,6 +936,7 @@ static char *uuid_string(char *buf, char *end, const u8 *addr,
* - 'i' [46] for 'raw' IPv4/IPv6 addresses
* IPv6 omits the colons (01020304...0f)
* IPv4 uses dot-separated decimal with leading 0's (010.123.045.006)
* - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order
* - 'I6c' for IPv6 addresses printed as specified by
* http://www.ietf.org/id/draft-kawamura-ipv6-text-representation-03.txt
* - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form
Expand Down

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