networkd: minor simplification

Let's return the fd we found as return value in systemd_netlink_fd(),
instead of using call-by-reference.
This commit is contained in:
Lennart Poettering
2015-02-02 23:27:33 +01:00
parent fed6df828d
commit 44de0efc6e
+13 -21
View File
@@ -76,8 +76,8 @@ static int setup_default_address_pool(Manager *m) {
return 0;
}
static int systemd_netlink_fd(int *ret) {
int n, fd, rtnl_fd = -1;
static int systemd_netlink_fd(void) {
int n, fd, rtnl_fd = -EINVAL;
n = sd_listen_fds(true);
if (n <= 0)
@@ -92,12 +92,7 @@ static int systemd_netlink_fd(int *ret) {
}
}
if (rtnl_fd < 0)
return -EINVAL;
*ret = rtnl_fd;
return 0;
return rtnl_fd;
}
int manager_new(Manager **ret) {
@@ -121,20 +116,17 @@ int manager_new(Manager **ret) {
sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
if (systemd_netlink_fd(&fd) < 0) {
r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR,
RTNLGRP_IPV6_IFADDR);
if (r < 0)
return r;
r = sd_rtnl_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
if (r < 0)
return r;
} else {
fd = systemd_netlink_fd();
if (fd < 0)
r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR, RTNLGRP_IPV6_IFADDR);
else
r = sd_rtnl_new_from_netlink(&m->rtnl, fd);
if (r < 0)
return r;
}
if (r < 0)
return r;
r = sd_rtnl_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
if (r < 0)
return r;
r = sd_bus_default_system(&m->bus);
if (r < 0 && r != -ENOENT) /* TODO: drop when we can rely on kdbus */