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lib/vsprintf.c: Add IPV4 options %pI4[hnbl] for host, network, big and little endian

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This should allow the removal of the #defines and uses
of NIPQUAD and NIPQUAD_FMT

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joe Perches 2010-01-13 20:23:30 -08:00 committed by David S. Miller
parent 3ccd4c6167
commit 0159f24ee7
1 changed files with 30 additions and 4 deletions
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34
lib/vsprintf.c
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@ -699,13 +699,37 @@ static char *mac_address_string(char *buf, char *end, u8 *addr,
return string(buf, end, mac_addr, spec); 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; 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++) { for (i = 0; i < 4; i++) {
char temp[3]; /* hold each IP quad in reverse order */ 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 (leading_zeros) {
if (digits < 3) if (digits < 3)
*p++ = '0'; *p++ = '0';
@ -717,6 +741,7 @@ static char *ip4_string(char *p, const u8 *addr, bool leading_zeros)
*p++ = temp[digits]; *p++ = temp[digits];
if (i < 3) if (i < 3)
*p++ = '.'; *p++ = '.';
index += step;
} }
*p = '\0'; *p = '\0';
@ -796,7 +821,7 @@ static char *ip6_compressed_string(char *p, const char *addr)
if (useIPv4) { if (useIPv4) {
if (needcolon) if (needcolon)
*p++ = ':'; *p++ = ':';
p = ip4_string(p, &in6.s6_addr[12], false); p = ip4_string(p, &in6.s6_addr[12], "I4");
} }
*p = '\0'; *p = '\0';
@ -836,7 +861,7 @@ static char *ip4_addr_string(char *buf, char *end, const u8 *addr,
{ {
char ip4_addr[sizeof("255.255.255.255")]; 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); return string(buf, end, ip4_addr, spec);
} }
@ -911,6 +936,7 @@ static char *uuid_string(char *buf, char *end, const u8 *addr,
* - 'i' [46] for 'raw' IPv4/IPv6 addresses * - 'i' [46] for 'raw' IPv4/IPv6 addresses
* IPv6 omits the colons (01020304...0f) * IPv6 omits the colons (01020304...0f)
* IPv4 uses dot-separated decimal with leading 0's (010.123.045.006) * 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 * - 'I6c' for IPv6 addresses printed as specified by
* http://www.ietf.org/id/draft-kawamura-ipv6-text-representation-03.txt * 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 * - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form