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flow: Add flow_perror() helper

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Our general logging helpers include a number of _perror() variants which,
like perror(3) include the description of the current errno.  We didn't
have those for our flow specific logging helpers, though.  Fill this gap
with flow_perror() and flow_dbg_perror(), and use them where it's useful.

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 2025-02-18 19:59:24 +11:00 • committed by Stefano Brivio
commit adb46c11d0
6 changed files with 49 additions and 47 deletions

5
icmp.c
View file

@ -85,7 +85,7 @@ void icmp_sock_handler(const struct ctx *c, union epoll_ref ref)
n = recvfrom(ref.fd, buf, sizeof(buf), 0, &sr.sa, &sl);
if (n < 0) {
flow_err(pingf, "recvfrom() error: %s", strerror_(errno));
flow_perror(pingf, "recvfrom() error");
return;
}
@ -300,8 +300,7 @@ int icmp_tap_handler(const struct ctx *c, uint8_t pif, sa_family_t af,
pif_sockaddr(c, &sa, &sl, PIF_HOST, &tgt->eaddr, 0);
if (sendto(pingf->sock, pkt, l4len, MSG_NOSIGNAL, &sa.sa, sl) < 0) {
flow_dbg(pingf, "failed to relay request to socket: %s",
strerror_(errno));
flow_dbg_perror(pingf, "failed to relay request to socket");
} else {
flow_dbg(pingf,
"echo request to socket, ID: %"PRIu16", seq: %"PRIu16,