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Merge pull request #20 from lexa/master

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Add support for socket activation by ipv6 socket
This commit is contained in:
Erik Ekman 2016-05-17 18:00:04 +02:00
commit 8e15a73a77
2 changed files with 24 additions and 6 deletions
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2
doc/iodine-server.socket
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@ -3,6 +3,8 @@ Description=Iodine socket
[Socket]
ListenDatagram=53
ListenDatagram=0.0.0.0:53
BindIPv6Only=ipv6-only
[Install]
WantedBy=sockets.target

28
src/iodined.c
View file

@ -2671,14 +2671,11 @@ main(int argc, char **argv)
#ifdef HAVE_SYSTEMD
nb_fds = sd_listen_fds(0);
if (nb_fds > 1) {
if (nb_fds < 0) {
warnx("Failed to receive file descriptors from systemd: %s", strerror(-nb_fds));
retval = 1;
warnx("Too many file descriptors received!\n");
goto cleanup;
} else if (nb_fds == 1) {
/* XXX: assume we get IPv4 socket */
dns_fds.v4fd = SD_LISTEN_FDS_START;
} else {
} else if (nb_fds == 0) {
#endif
if ((addrfamily == AF_UNSPEC || addrfamily == AF_INET) &&
(dns_fds.v4fd = open_dns(&dns4addr, dns4addr_len)) < 0) {
@ -2694,6 +2691,25 @@ main(int argc, char **argv)
goto cleanup;
}
#ifdef HAVE_SYSTEMD
} else if (nb_fds <= 2) {
/* systemd may pass up to two sockets, for ip4 and ip6, try to figure out
which is which */
for (int i = 0; i < nb_fds; i++) {
int fd = SD_LISTEN_FDS_START + i;
if (sd_is_socket(fd, AF_INET, SOCK_DGRAM, -1)) {
dns_fds.v4fd = fd;
} else if (sd_is_socket(fd, AF_INET6, SOCK_DGRAM, -1)) {
dns_fds.v6fd = fd;
} else {
retval = 1;
warnx("Unknown socket %d passed to iodined!\n", fd);
goto cleanup;
}
}
} else {
retval = 1;
warnx("Too many file descriptors received!\n");
goto cleanup;
}
#endif