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Add support for socket activation by ipv6 socket 

iodined may accept ipv4 and ipv6 sockets via systemd socket activation,
we need to figure out type of sockets.
This commit is contained in:
Aleksei Fedotov 2016-05-09 23:04:21 +03:00
parent 36df8dc16b
commit 4987aa536d
1 changed files with 22 additions and 6 deletions
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28
src/iodined.c
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@ -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