#include "udev-util.h"
#include "rtnl-util.h"
#include "mkdir.h"
+#include "virt.h"
const char* const network_dirs[] = {
"/etc/systemd/network",
"/run/systemd/network",
"/usr/lib/systemd/network",
-#ifdef HAVE_SPLIT_USER
+#ifdef HAVE_SPLIT_USR
"/lib/systemd/network",
#endif
NULL};
+static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
+ Manager *m = userdata;
+
+ assert(m);
+
+ log_received_signal(LOG_INFO, si);
+
+ sd_event_exit(m->event, 0);
+ return 0;
+}
+
+static int setup_signals(Manager *m) {
+ sigset_t mask;
+ int r;
+
+ assert(m);
+
+ assert_se(sigemptyset(&mask) == 0);
+ sigset_add_many(&mask, SIGINT, SIGTERM, -1);
+ assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+
+ r = sd_event_add_signal(m->event, &m->sigterm_event_source, SIGTERM, dispatch_sigterm, m);
+ if (r < 0)
+ return r;
+
+ r = sd_event_add_signal(m->event, &m->sigint_event_source, SIGINT, dispatch_sigterm, m);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
int manager_new(Manager **ret) {
_cleanup_manager_free_ Manager *m = NULL;
int r;
sd_event_set_watchdog(m->event, true);
- r = sd_rtnl_open(RTMGRP_LINK | RTMGRP_IPV4_IFADDR, &m->rtnl);
+ r = sd_rtnl_open(&m->rtnl, RTMGRP_LINK | RTMGRP_IPV4_IFADDR);
if (r < 0)
return r;
if (r < 0 && r != -ENOENT) /* TODO: drop when we can rely on kdbus */
return r;
+ r = setup_signals(m);
+ if (r < 0)
+ return r;
+
m->udev = udev_new();
if (!m->udev)
return -ENOMEM;
- m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
- if (!m->udev_monitor)
- return -ENOMEM;
+ /* udev does not initialize devices inside containers,
+ * so we rely on them being already initialized before
+ * entering the container */
+ if (detect_container(NULL) > 0) {
+ m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "kernel");
+ if (!m->udev_monitor)
+ return -ENOMEM;
+ } else {
+ m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
+ if (!m->udev_monitor)
+ return -ENOMEM;
+ }
m->links = hashmap_new(uint64_hash_func, uint64_compare_func);
if (!m->links)
void manager_free(Manager *m) {
Network *network;
- Netdev *netdev;
+ NetDev *netdev;
Link *link;
+ if (!m)
+ return;
+
udev_monitor_unref(m->udev_monitor);
udev_unref(m->udev);
sd_bus_unref(m->bus);
sd_event_source_unref(m->udev_event_source);
+ sd_event_source_unref(m->sigterm_event_source);
+ sd_event_source_unref(m->sigint_event_source);
sd_event_unref(m->event);
- while ((network = m->networks))
- network_free(network);
-
while ((link = hashmap_first(m->links)))
link_free(link);
hashmap_free(m->links);
+ while ((network = m->networks))
+ network_free(network);
+
while ((netdev = hashmap_first(m->netdevs)))
netdev_free(netdev);
hashmap_free(m->netdevs);
}
static int manager_process_link(Manager *m, struct udev_device *device) {
- Link *link;
+ Link *link = NULL;
int r;
- if (streq_ptr(udev_device_get_action(device), "remove")) {
- uint64_t ifindex;
+ assert(m);
+ assert(device);
+ link_get(m, udev_device_get_ifindex(device), &link);
+
+ if (streq_ptr(udev_device_get_action(device), "remove")) {
log_debug("%s: link removed", udev_device_get_sysname(device));
- ifindex = udev_device_get_ifindex(device);
- link = hashmap_get(m->links, &ifindex);
- if (!link)
+ if (link)
+ link_free(link);
+ } else {
+ if (link) {
+ log_debug("%s: link already exists, ignoring",
+ link->ifname);
return 0;
+ }
- link_free(link);
- } else {
r = link_add(m, device, &link);
if (r < 0) {
- if (r == -EEXIST)
- log_debug("%s: link already exists, ignoring",
- link->ifname);
- else
- log_error("%s: could not handle link: %s",
- udev_device_get_sysname(device),
- strerror(-r));
+ log_error("%s: could not handle link: %s",
+ udev_device_get_sysname(device),
+ strerror(-r));
} else
log_debug("%s: link (with ifindex %" PRIu64") added",
link->ifname, link->ifindex);
if (r < 0)
return r;
- r = udev_enumerate_add_match_is_initialized(e);
- if (r < 0)
- return r;
+ /* udev does not initialize devices inside containers,
+ * so we rely on them being already initialized before
+ * entering the container */
+ if (detect_container(NULL) <= 0) {
+ r = udev_enumerate_add_match_is_initialized(e);
+ if (r < 0)
+ return r;
+ }
r = udev_enumerate_scan_devices(e);
if (r < 0)
}
r = sd_event_add_io(m->event,
+ &m->udev_event_source,
udev_monitor_get_fd(m->udev_monitor),
EPOLLIN, manager_dispatch_link_udev,
- m, &m->udev_event_source);
+ m);
if (r < 0)
return r;
static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) {
Manager *m = userdata;
Link *link;
- const char *name;
- uint64_t ifindex_64;
+ char *name;
int r, ifindex;
+ assert(rtnl);
+ assert(message);
+ assert(m);
+
r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
if (r < 0 || ifindex <= 0) {
- log_debug("received RTM_NEWLINK message without valid ifindex");
+ log_warning("received RTM_NEWLINK message without valid ifindex");
return 0;
}
- r = rtnl_message_link_get_ifname(message, &name);
+ r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &name);
if (r < 0)
- log_debug("received RTM_NEWLINK message without valid IFLA_IFNAME");
+ log_warning("received RTM_NEWLINK message without valid ifname");
else {
- Netdev *netdev;
+ NetDev *netdev;
r = netdev_get(m, name, &netdev);
- if (r >= 0) {
- r = netdev_set_ifindex(netdev, ifindex);
- if (r < 0)
- log_debug("could not set ifindex of netdev '%s' to %d: %s",
- name, ifindex, strerror(-r));
- }
+ if (r >= 0)
+ netdev_set_ifindex(netdev, message);
}
- ifindex_64 = ifindex;
- link = hashmap_get(m->links, &ifindex_64);
- if (!link) {
+ r = link_get(m, ifindex, &link);
+ if (r < 0) {
log_debug("received RTM_NEWLINK message for untracked ifindex %d", ifindex);
return 0;
}
assert(m);
- r = mkdir_safe_label("/run/systemd/network", 0755, 0, 0);
- if (r < 0)
- return r;
-
r = fopen_temporary("/run/systemd/network/resolv.conf", &f, &temp_path);
if (r < 0)
return r;
}
}
- HASHMAP_FOREACH(link, m->links, i)
- if (link->network && link->network->dns)
- append_dns(f, &link->network->dns->in_addr.in,
- link->network->dns->family, &count);
+ HASHMAP_FOREACH(link, m->links, i) {
+ if (link->network && link->network->dns) {
+ Address *address;
+ Iterator j;
+
+ SET_FOREACH(address, link->network->dns, j) {
+ append_dns(f, &address->in_addr.in,
+ address->family, &count);
+ }
+ }
+ }
fflush(f);
~ianmdlvl / elogind.git / blobdiff