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Add support for socket activation by ipv6 socket

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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 #ifdef HAVE_SYSTEMD
nb_fds = sd_listen_fds(0); 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; retval = 1;
warnx("Too many file descriptors received!\n");
goto cleanup; goto cleanup;
} else if (nb_fds == 1) { } else if (nb_fds == 0) {
/* XXX: assume we get IPv4 socket */
dns_fds.v4fd = SD_LISTEN_FDS_START;
} else {
#endif #endif
if ((addrfamily == AF_UNSPEC || addrfamily == AF_INET) && if ((addrfamily == AF_UNSPEC || addrfamily == AF_INET) &&
(dns_fds.v4fd = open_dns(&dns4addr, dns4addr_len)) < 0) { (dns_fds.v4fd = open_dns(&dns4addr, dns4addr_len)) < 0) {
@ -2694,6 +2691,25 @@ main(int argc, char **argv)
goto cleanup; goto cleanup;
} }
#ifdef HAVE_SYSTEMD #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 #endif