Messages in this thread Patch in this message | | | Subject | [PATCH] vsprintf: Update %pI6c to not compress a single 0 | From | Joe Perches <> | Date | Thu, 09 Jun 2011 11:23:37 -0700 |
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RFC 5952 http://tools.ietf.org/html/rfc5952 mandates that 2 or more consecutive 0's are required before using :: compression.
Update ip6_compressed_string to match the RFC and update the http reference as well.
Signed-off-by: Joe Perches <joe@perches.com> --- lib/vsprintf.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index c112056..4365df3 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -666,6 +666,8 @@ char *ip6_compressed_string(char *p, const char *addr) colonpos = i; } } + if (longest == 1) /* don't compress a single 0 */ + colonpos = -1; /* emit address */ for (i = 0; i < range; i++) { @@ -826,7 +828,7 @@ int kptr_restrict __read_mostly; * 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://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00 + * http://tools.ietf.org/html/rfc5952 * - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form * "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" * Options for %pU are: -- 1.7.6.rc0
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