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util: Add AF_UNSPEC support to sockaddr_ntop()

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Allow sockaddr_ntop() to format AF_UNSPEC socket addresses.  There do exist
a few cases where we might legitimately have either an AF_UNSPEC or a real
address, such as the origin address from MSG_ERRQUEUE.  Even in cases where
we shouldn't get an AF_UNSPEC address, formatting it is likely to make
things easier to debug if we ever somehow do.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson 2024-07-17 10:36:03 +10:00 committed by Stefano Brivio
parent 4e1f850f61
commit 6bd8283bf9
1 changed files with 4 additions and 0 deletions
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4
util.c
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@ -622,6 +622,10 @@ const char *sockaddr_ntop(const void *sa, char *dst, socklen_t size)
} while (0) } while (0)
switch (family) { switch (family) {
case AF_UNSPEC:
IPRINTF("<unspecified>");
break;
case AF_INET: { case AF_INET: {
const struct sockaddr_in *sa4 = sa; const struct sockaddr_in *sa4 = sa;