On 06/28/2013 05:44 PM, Joe Perches wrote:
On Fri, 2013-06-28 at 14:05 +0200, Daniel Borkmann wrote:
In order to avoid making code that deals with printing both, IPv4 and
IPv6 addresses, unnecessary complicated as for example ...

Thanks Daniel, seems sensible.  Just trivial comments...

Ok, thanks.

[]

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
[]

Should any other include other than net/addrconf be needed?

I'm not sure I understand this question.

+char *ip6_addr_string_sa(char *buf, char *end, const struct sockaddr_in6 *sa,
+                        struct printf_spec spec, const char *fmt)
+{
[]
+       char fmt6[2] = { fmt[0], '6'};

This looks odd to me.  why not use a bool compressed
flag and identify this before the isalpha loop and not
have fmt6 at all?

Well, we have a bool called 'have_c' that identifies if 'c' was specified. To 
have
the same behaviour as with %pI6, this is used to create a temporary fmt that we 
then
can pass to ip6_string(). If you look at ip6_addr_string(), it's done the same 
way,
and by that, we stay compatible in behaviour.

+       u8 off = 0;
+
+       fmt++;
+       while (isalpha(*++fmt)) {
+               switch (*fmt) {
+               case 'p':
+                       have_p = true;
+                       break;
+               case 'f':
+                       have_f = true;
+                       break;
+               case 's':
+                       have_s = true;
+                       break;
+               case 'c':
+                       have_c = true;
+                       break;
+               }
+       }


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