diff options
Diffstat (limited to 'src/network/networkd-manager.c')
| -rw-r--r-- | src/network/networkd-manager.c | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c index 4c9043486a..49e353a7b1 100644 --- a/src/network/networkd-manager.c +++ b/src/network/networkd-manager.c @@ -35,6 +35,7 @@ #include "virt.h" #include "sd-rtnl.h" +#include "sd-daemon.h" /* use 8 MB for receive socket kernel queue. */ #define RCVBUF_SIZE (8*1024*1024) @@ -75,9 +76,33 @@ static int setup_default_address_pool(Manager *m) { return 0; } +static int systemd_netlink_fd(int *ret) { + int n, fd, rtnl_fd = -1; + + n = sd_listen_fds(true); + if (n <= 0) + return -EINVAL; + + for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) { + if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { + if (rtnl_fd >= 0) + return -EINVAL; + + rtnl_fd = fd; + } + } + + if (rtnl_fd < 0) + return -EINVAL; + + *ret = rtnl_fd; + + return 0; +} + int manager_new(Manager **ret) { _cleanup_manager_free_ Manager *m = NULL; - int r; + int r, fd; m = new0(Manager, 1); if (!m) @@ -96,14 +121,20 @@ 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); - r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR, - RTNLGRP_IPV6_IFADDR); - if (r < 0) - return r; + 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; + r = sd_rtnl_inc_rcvbuf(m->rtnl, RCVBUF_SIZE); + if (r < 0) + return r; + } else { + r = sd_rtnl_new_from_netlink(&m->rtnl, fd); + 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 */ |