ceph: fix printing of ipv6 addrs
The buffer was too small. Make it bigger, use snprintf(), put brackets
around the ipv6 address to avoid mixing it up with the :port, and use the
ever-so-handy %pI[46] formats.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c
index 9692d08..e8c5a2d 100644
--- a/fs/ceph/messenger.c
+++ b/fs/ceph/messenger.c
@@ -43,7 +43,8 @@
* nicely render a sockaddr as a string.
*/
#define MAX_ADDR_STR 20
-static char addr_str[MAX_ADDR_STR][40];
+#define MAX_ADDR_STR_LEN 60
+static char addr_str[MAX_ADDR_STR][MAX_ADDR_STR_LEN];
static DEFINE_SPINLOCK(addr_str_lock);
static int last_addr_str;
@@ -52,7 +53,6 @@
int i;
char *s;
struct sockaddr_in *in4 = (void *)ss;
- unsigned char *quad = (void *)&in4->sin_addr.s_addr;
struct sockaddr_in6 *in6 = (void *)ss;
spin_lock(&addr_str_lock);
@@ -64,25 +64,13 @@
switch (ss->ss_family) {
case AF_INET:
- sprintf(s, "%u.%u.%u.%u:%u",
- (unsigned int)quad[0],
- (unsigned int)quad[1],
- (unsigned int)quad[2],
- (unsigned int)quad[3],
- (unsigned int)ntohs(in4->sin_port));
+ snprintf(s, MAX_ADDR_STR_LEN, "%pI4:%u", &in4->sin_addr,
+ (unsigned int)ntohs(in4->sin_port));
break;
case AF_INET6:
- sprintf(s, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%u",
- in6->sin6_addr.s6_addr16[0],
- in6->sin6_addr.s6_addr16[1],
- in6->sin6_addr.s6_addr16[2],
- in6->sin6_addr.s6_addr16[3],
- in6->sin6_addr.s6_addr16[4],
- in6->sin6_addr.s6_addr16[5],
- in6->sin6_addr.s6_addr16[6],
- in6->sin6_addr.s6_addr16[7],
- (unsigned int)ntohs(in6->sin6_port));
+ snprintf(s, MAX_ADDR_STR_LEN, "[%pI6c]:%u", &in6->sin6_addr,
+ (unsigned int)ntohs(in6->sin6_port));
break;
default: