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path: root/src/network/networkd-manager.c
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-rw-r--r--src/network/networkd-manager.c940
1 files changed, 699 insertions, 241 deletions
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index a5c2351cf9..0ad34e0cc2 100644
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
@@ -22,21 +20,26 @@
#include <sys/socket.h>
#include <linux/if.h>
+#include "sd-daemon.h"
+#include "sd-netlink.h"
+
+#include "alloc-util.h"
+#include "bus-util.h"
#include "conf-parser.h"
-#include "path-util.h"
-#include "networkd.h"
-#include "networkd-netdev.h"
-#include "networkd-link.h"
+#include "def.h"
+#include "dns-domain.h"
+#include "fd-util.h"
+#include "fileio.h"
#include "libudev-private.h"
-#include "udev-util.h"
+#include "local-addresses.h"
#include "netlink-util.h"
-#include "bus-util.h"
-#include "def.h"
+#include "networkd.h"
+#include "ordered-set.h"
+#include "path-util.h"
+#include "set.h"
+#include "udev-util.h"
#include "virt.h"
-#include "sd-netlink.h"
-#include "sd-daemon.h"
-
/* use 8 MB for receive socket kernel queue. */
#define RCVBUF_SIZE (8*1024*1024)
@@ -99,7 +102,7 @@ static int manager_reset_all(Manager *m) {
HASHMAP_FOREACH(link, m->links, i) {
r = link_carrier_reset(link);
if (r < 0)
- log_link_warning_errno(link, r, "could not reset carrier: %m");
+ log_link_warning_errno(link, r, "Could not reset carrier: %m");
}
return 0;
@@ -145,7 +148,9 @@ int manager_connect_bus(Manager *m) {
return log_error_errno(r, "Failed to install bus reconnect time event: %m");
return 0;
- } if (r < 0)
+ }
+
+ if (r < 0)
return r;
r = sd_bus_add_match(m->bus, &m->prepare_for_sleep_slot,
@@ -171,6 +176,14 @@ int manager_connect_bus(Manager *m) {
if (r < 0)
return log_error_errno(r, "Failed to add link enumerator: %m");
+ r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link.Lease", lease_vtable, lease_object_find, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add lease object vtable: %m");
+
+ r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", lease_node_enumerator, m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add lease enumerator: %m");
+
r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m);
if (r < 0)
return log_error_errno(r, "Failed to add network object vtable: %m");
@@ -202,7 +215,7 @@ static int manager_udev_process_link(Manager *m, struct udev_device *device) {
ifindex = udev_device_get_ifindex(device);
if (ifindex <= 0) {
- log_debug("ignoring udev ADD event for device with invalid ifindex");
+ log_debug("Ignoring udev ADD event for device with invalid ifindex");
return 0;
}
@@ -238,7 +251,7 @@ static int manager_connect_udev(Manager *m) {
/* udev does not initialize devices inside containers,
* so we rely on them being already initialized before
* entering the container */
- if (detect_container(NULL) > 0)
+ if (detect_container() > 0)
return 0;
m->udev = udev_new();
@@ -274,6 +287,348 @@ static int manager_connect_udev(Manager *m) {
return 0;
}
+int manager_rtnl_process_route(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
+ Manager *m = userdata;
+ Link *link = NULL;
+ uint16_t type;
+ uint32_t ifindex, priority = 0;
+ unsigned char protocol, scope, tos, table;
+ int family;
+ unsigned char dst_prefixlen, src_prefixlen;
+ union in_addr_union dst = {}, gw = {}, src = {}, prefsrc = {};
+ Route *route = NULL;
+ int r;
+
+ assert(rtnl);
+ assert(message);
+ assert(m);
+
+ if (sd_netlink_message_is_error(message)) {
+ r = sd_netlink_message_get_errno(message);
+ if (r < 0)
+ log_warning_errno(r, "rtnl: failed to receive route: %m");
+
+ return 0;
+ }
+
+ r = sd_netlink_message_get_type(message, &type);
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get message type: %m");
+ return 0;
+ } else if (type != RTM_NEWROUTE && type != RTM_DELROUTE) {
+ log_warning("rtnl: received unexpected message type when processing route");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_u32(message, RTA_OIF, &ifindex);
+ if (r == -ENODATA) {
+ log_debug("rtnl: received route without ifindex, ignoring");
+ return 0;
+ } else if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get ifindex from route, ignoring: %m");
+ return 0;
+ } else if (ifindex <= 0) {
+ log_warning("rtnl: received route message with invalid ifindex, ignoring: %d", ifindex);
+ return 0;
+ } else {
+ r = link_get(m, ifindex, &link);
+ if (r < 0 || !link) {
+ /* when enumerating we might be out of sync, but we will
+ * get the route again, so just ignore it */
+ if (!m->enumerating)
+ log_warning("rtnl: received route for nonexistent link (%d), ignoring", ifindex);
+ return 0;
+ }
+ }
+
+ r = sd_rtnl_message_route_get_family(message, &family);
+ if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) {
+ log_link_warning(link, "rtnl: received address with invalid family, ignoring.");
+ return 0;
+ }
+
+ r = sd_rtnl_message_route_get_protocol(message, &protocol);
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get route protocol: %m");
+ return 0;
+ }
+
+ switch (family) {
+ case AF_INET:
+ r = sd_netlink_message_read_in_addr(message, RTA_DST, &dst.in);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_in_addr(message, RTA_GATEWAY, &gw.in);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_in_addr(message, RTA_SRC, &src.in);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_in_addr(message, RTA_PREFSRC, &prefsrc.in);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m");
+ return 0;
+ }
+
+ break;
+
+ case AF_INET6:
+ r = sd_netlink_message_read_in6_addr(message, RTA_DST, &dst.in6);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_in6_addr(message, RTA_GATEWAY, &gw.in6);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_in6_addr(message, RTA_SRC, &src.in6);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_in6_addr(message, RTA_PREFSRC, &prefsrc.in6);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m");
+ return 0;
+ }
+
+ break;
+
+ default:
+ log_link_debug(link, "rtnl: ignoring unsupported address family: %d", family);
+ return 0;
+ }
+
+ r = sd_rtnl_message_route_get_dst_prefixlen(message, &dst_prefixlen);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid destination prefixlen, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_route_get_src_prefixlen(message, &src_prefixlen);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid source prefixlen, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_route_get_scope(message, &scope);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid scope, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_route_get_tos(message, &tos);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid tos, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_route_get_table(message, &table);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid table, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_u32(message, RTA_PRIORITY, &priority);
+ if (r < 0 && r != -ENODATA) {
+ log_link_warning_errno(link, r, "rtnl: received route with invalid priority, ignoring: %m");
+ return 0;
+ }
+
+ route_get(link, family, &dst, dst_prefixlen, tos, priority, table, &route);
+
+ switch (type) {
+ case RTM_NEWROUTE:
+ if (!route) {
+ /* A route appeared that we did not request */
+ r = route_add_foreign(link, family, &dst, dst_prefixlen, tos, priority, table, &route);
+ if (r < 0)
+ return 0;
+ }
+
+ route_update(route, &src, src_prefixlen, &gw, &prefsrc, scope, protocol);
+
+ break;
+
+ case RTM_DELROUTE:
+ route_free(route);
+ break;
+
+ default:
+ assert_not_reached("Received invalid RTNL message type");
+ }
+
+ return 1;
+}
+
+int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
+ Manager *m = userdata;
+ Link *link = NULL;
+ uint16_t type;
+ unsigned char flags;
+ int family;
+ unsigned char prefixlen;
+ unsigned char scope;
+ union in_addr_union in_addr;
+ struct ifa_cacheinfo cinfo;
+ Address *address = NULL;
+ char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX];
+ const char *valid_str = NULL;
+ int r, ifindex;
+
+ assert(rtnl);
+ assert(message);
+ assert(m);
+
+ if (sd_netlink_message_is_error(message)) {
+ r = sd_netlink_message_get_errno(message);
+ if (r < 0)
+ log_warning_errno(r, "rtnl: failed to receive address: %m");
+
+ return 0;
+ }
+
+ r = sd_netlink_message_get_type(message, &type);
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get message type: %m");
+ return 0;
+ } else if (type != RTM_NEWADDR && type != RTM_DELADDR) {
+ log_warning("rtnl: received unexpected message type when processing address");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_ifindex(message, &ifindex);
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get ifindex from address: %m");
+ return 0;
+ } else if (ifindex <= 0) {
+ log_warning("rtnl: received address message with invalid ifindex: %d", ifindex);
+ return 0;
+ } else {
+ r = link_get(m, ifindex, &link);
+ if (r < 0 || !link) {
+ /* when enumerating we might be out of sync, but we will
+ * get the address again, so just ignore it */
+ if (!m->enumerating)
+ log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex);
+ return 0;
+ }
+ }
+
+ r = sd_rtnl_message_addr_get_family(message, &family);
+ if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) {
+ log_link_warning(link, "rtnl: received address with invalid family, ignoring.");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_prefixlen(message, &prefixlen);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_scope(message, &scope);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_flags(message, &flags);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m");
+ return 0;
+ }
+
+ switch (family) {
+ case AF_INET:
+ r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &in_addr.in);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
+ return 0;
+ }
+
+ break;
+
+ case AF_INET6:
+ r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &in_addr.in6);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m");
+ return 0;
+ }
+
+ break;
+
+ default:
+ log_link_debug(link, "rtnl: ignoring unsupported address family: %d", family);
+ }
+
+ if (!inet_ntop(family, &in_addr, buf, INET6_ADDRSTRLEN)) {
+ log_link_warning(link, "Could not print address");
+ return 0;
+ }
+
+ r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &cinfo);
+ if (r >= 0) {
+ if (cinfo.ifa_valid != CACHE_INFO_INFINITY_LIFE_TIME)
+ valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX,
+ cinfo.ifa_valid * USEC_PER_SEC,
+ USEC_PER_SEC);
+ }
+
+ address_get(link, family, &in_addr, prefixlen, &address);
+
+ switch (type) {
+ case RTM_NEWADDR:
+ if (address)
+ log_link_debug(link, "Updating address: %s/%u (valid %s%s)", buf, prefixlen,
+ valid_str ? "for " : "forever", valid_str ?: "");
+ else {
+ /* An address appeared that we did not request */
+ r = address_add_foreign(link, family, &in_addr, prefixlen, &address);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "Failed to add address %s/%u: %m", buf, prefixlen);
+ return 0;
+ } else
+ log_link_debug(link, "Adding address: %s/%u (valid %s%s)", buf, prefixlen,
+ valid_str ? "for " : "forever", valid_str ?: "");
+ }
+
+ address_update(address, flags, scope, &cinfo);
+
+ break;
+
+ case RTM_DELADDR:
+
+ if (address) {
+ log_link_debug(link, "Removing address: %s/%u (valid %s%s)", buf, prefixlen,
+ valid_str ? "for " : "forever", valid_str ?: "");
+ address_drop(address);
+ } else
+ log_link_warning(link, "Removing non-existent address: %s/%u (valid %s%s)", buf, prefixlen,
+ valid_str ? "for " : "forever", valid_str ?: "");
+
+ break;
+ default:
+ assert_not_reached("Received invalid RTNL message type");
+ }
+
+ return 1;
+}
+
static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) {
Manager *m = userdata;
Link *link = NULL;
@@ -289,36 +644,37 @@ static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *messa
if (sd_netlink_message_is_error(message)) {
r = sd_netlink_message_get_errno(message);
if (r < 0)
- log_warning_errno(r, "rtnl: could not receive link: %m");
+ log_warning_errno(r, "rtnl: Could not receive link: %m");
return 0;
}
r = sd_netlink_message_get_type(message, &type);
if (r < 0) {
- log_warning_errno(r, "rtnl: could not get message type: %m");
+ log_warning_errno(r, "rtnl: Could not get message type: %m");
return 0;
} else if (type != RTM_NEWLINK && type != RTM_DELLINK) {
- log_warning("rtnl: received unexpected message type when processing link");
+ log_warning("rtnl: Received unexpected message type when processing link");
return 0;
}
r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
if (r < 0) {
- log_warning_errno(r, "rtnl: could not get ifindex from link: %m");
+ log_warning_errno(r, "rtnl: Could not get ifindex from link: %m");
return 0;
} else if (ifindex <= 0) {
log_warning("rtnl: received link message with invalid ifindex: %d", ifindex);
return 0;
- } else
- link_get(m, ifindex, &link);
+ }
r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name);
if (r < 0) {
- log_warning_errno(r, "rtnl: received link message without ifname: %m");
+ log_warning_errno(r, "rtnl: Received link message without ifname: %m");
return 0;
- } else
- netdev_get(m, name, &netdev);
+ }
+
+ (void) link_get(m, ifindex, &link);
+ (void) netdev_get(m, name, &netdev);
switch (type) {
case RTM_NEWLINK:
@@ -326,7 +682,7 @@ static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *messa
/* link is new, so add it */
r = link_add(m, message, &link);
if (r < 0) {
- log_warning_errno(r, "could not add new link: %m");
+ log_warning_errno(r, "Could not add new link: %m");
return 0;
}
}
@@ -335,7 +691,7 @@ static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *messa
/* netdev exists, so make sure the ifindex matches */
r = netdev_set_ifindex(netdev, message);
if (r < 0) {
- log_warning_errno(r, "could not set ifindex on netdev: %m");
+ log_warning_errno(r, "Could not set ifindex on netdev: %m");
return 0;
}
}
@@ -407,17 +763,243 @@ static int manager_connect_rtnl(Manager *m) {
if (r < 0)
return r;
- r = sd_netlink_add_match(m->rtnl, RTM_NEWADDR, &link_rtnl_process_address, m);
+ r = sd_netlink_add_match(m->rtnl, RTM_NEWADDR, &manager_rtnl_process_address, m);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_add_match(m->rtnl, RTM_DELADDR, &manager_rtnl_process_address, m);
if (r < 0)
return r;
- r = sd_netlink_add_match(m->rtnl, RTM_DELADDR, &link_rtnl_process_address, m);
+ r = sd_netlink_add_match(m->rtnl, RTM_NEWROUTE, &manager_rtnl_process_route, m);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_add_match(m->rtnl, RTM_DELROUTE, &manager_rtnl_process_route, m);
if (r < 0)
return r;
return 0;
}
+static int ordered_set_put_in_addr(OrderedSet *s, const struct in_addr *address) {
+ char *p;
+ int r;
+
+ assert(s);
+
+ r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p);
+ if (r < 0)
+ return r;
+
+ r = ordered_set_consume(s, p);
+ if (r == -EEXIST)
+ return 0;
+
+ return r;
+}
+
+static int ordered_set_put_in_addrv(OrderedSet *s, const struct in_addr *addresses, int n) {
+ int r, i, c = 0;
+
+ assert(s);
+ assert(n <= 0 || addresses);
+
+ for (i = 0; i < n; i++) {
+ r = ordered_set_put_in_addr(s, addresses+i);
+ if (r < 0)
+ return r;
+
+ c += r;
+ }
+
+ return c;
+}
+
+static void print_string_set(FILE *f, const char *field, OrderedSet *s) {
+ bool space = false;
+ Iterator i;
+ char *p;
+
+ if (ordered_set_isempty(s))
+ return;
+
+ fputs(field, f);
+
+ ORDERED_SET_FOREACH(p, s, i)
+ fputs_with_space(f, p, NULL, &space);
+
+ fputc('\n', f);
+}
+
+static int manager_save(Manager *m) {
+ _cleanup_ordered_set_free_free_ OrderedSet *dns = NULL, *ntp = NULL, *search_domains = NULL, *route_domains = NULL;
+ Link *link;
+ Iterator i;
+ _cleanup_free_ char *temp_path = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ LinkOperationalState operstate = LINK_OPERSTATE_OFF;
+ const char *operstate_str;
+ int r;
+
+ assert(m);
+ assert(m->state_file);
+
+ /* We add all NTP and DNS server to a set, to filter out duplicates */
+ dns = ordered_set_new(&string_hash_ops);
+ if (!dns)
+ return -ENOMEM;
+
+ ntp = ordered_set_new(&string_hash_ops);
+ if (!ntp)
+ return -ENOMEM;
+
+ search_domains = ordered_set_new(&dns_name_hash_ops);
+ if (!search_domains)
+ return -ENOMEM;
+
+ route_domains = ordered_set_new(&dns_name_hash_ops);
+ if (!route_domains)
+ return -ENOMEM;
+
+ HASHMAP_FOREACH(link, m->links, i) {
+ if (link->flags & IFF_LOOPBACK)
+ continue;
+
+ if (link->operstate > operstate)
+ operstate = link->operstate;
+
+ if (!link->network)
+ continue;
+
+ /* First add the static configured entries */
+ r = ordered_set_put_strdupv(dns, link->network->dns);
+ if (r < 0)
+ return r;
+
+ r = ordered_set_put_strdupv(ntp, link->network->ntp);
+ if (r < 0)
+ return r;
+
+ r = ordered_set_put_strdupv(search_domains, link->network->search_domains);
+ if (r < 0)
+ return r;
+
+ r = ordered_set_put_strdupv(route_domains, link->network->route_domains);
+ if (r < 0)
+ return r;
+
+ if (!link->dhcp_lease)
+ continue;
+
+ /* Secondly, add the entries acquired via DHCP */
+ if (link->network->dhcp_use_dns) {
+ const struct in_addr *addresses;
+
+ r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses);
+ if (r > 0) {
+ r = ordered_set_put_in_addrv(dns, addresses, r);
+ if (r < 0)
+ return r;
+ } else if (r < 0 && r != -ENODATA)
+ return r;
+ }
+
+ if (link->network->dhcp_use_ntp) {
+ const struct in_addr *addresses;
+
+ r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses);
+ if (r > 0) {
+ r = ordered_set_put_in_addrv(ntp, addresses, r);
+ if (r < 0)
+ return r;
+ } else if (r < 0 && r != -ENODATA)
+ return r;
+ }
+
+ if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) {
+ const char *domainname;
+
+ r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname);
+ if (r >= 0) {
+
+ if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES)
+ r = ordered_set_put_strdup(search_domains, domainname);
+ else
+ r = ordered_set_put_strdup(route_domains, domainname);
+
+ if (r < 0)
+ return r;
+ } else if (r != -ENODATA)
+ return r;
+ }
+ }
+
+ operstate_str = link_operstate_to_string(operstate);
+ assert(operstate_str);
+
+ r = fopen_temporary(m->state_file, &f, &temp_path);
+ if (r < 0)
+ return r;
+
+ fchmod(fileno(f), 0644);
+
+ fprintf(f,
+ "# This is private data. Do not parse.\n"
+ "OPER_STATE=%s\n", operstate_str);
+
+ print_string_set(f, "DNS=", dns);
+ print_string_set(f, "NTP=", ntp);
+ print_string_set(f, "DOMAINS=", search_domains);
+ print_string_set(f, "ROUTE_DOMAINS=", route_domains);
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
+
+ if (rename(temp_path, m->state_file) < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ if (m->operational_state != operstate) {
+ m->operational_state = operstate;
+ r = manager_send_changed(m, "OperationalState", NULL);
+ if (r < 0)
+ log_error_errno(r, "Could not emit changed OperationalState: %m");
+ }
+
+ m->dirty = false;
+
+ return 0;
+
+fail:
+ (void) unlink(m->state_file);
+ (void) unlink(temp_path);
+
+ return log_error_errno(r, "Failed to save network state to %s: %m", m->state_file);
+}
+
+static int manager_dirty_handler(sd_event_source *s, void *userdata) {
+ Manager *m = userdata;
+ Link *link;
+ Iterator i;
+ int r;
+
+ assert(m);
+
+ if (m->dirty)
+ manager_save(m);
+
+ SET_FOREACH(link, m->dirty_links, i) {
+ r = link_save(link);
+ if (r >= 0)
+ link_clean(link);
+ }
+
+ return 1;
+}
+
int manager_new(Manager **ret) {
_cleanup_manager_free_ Manager *m = NULL;
int r;
@@ -439,6 +1021,10 @@ 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_event_add_post(m->event, NULL, manager_dirty_handler, m);
+ if (r < 0)
+ return r;
+
r = manager_connect_rtnl(m);
if (r < 0)
return r;
@@ -457,6 +1043,8 @@ int manager_new(Manager **ret) {
if (r < 0)
return r;
+ m->duid.type = DUID_TYPE_EN;
+
*ret = m;
m = NULL;
@@ -474,14 +1062,6 @@ void manager_free(Manager *m) {
free(m->state_file);
- udev_monitor_unref(m->udev_monitor);
- udev_unref(m->udev);
- sd_bus_unref(m->bus);
- sd_bus_slot_unref(m->prepare_for_sleep_slot);
- sd_event_source_unref(m->udev_event_source);
- sd_event_source_unref(m->bus_retry_event_source);
- sd_event_unref(m->event);
-
while ((link = hashmap_first(m->links)))
link_unref(link);
hashmap_free(m->links);
@@ -499,6 +1079,15 @@ void manager_free(Manager *m) {
address_pool_free(pool);
sd_netlink_unref(m->rtnl);
+ sd_event_unref(m->event);
+
+ sd_event_source_unref(m->udev_event_source);
+ udev_monitor_unref(m->udev_monitor);
+ udev_unref(m->udev);
+
+ sd_bus_unref(m->bus);
+ sd_bus_slot_unref(m->prepare_for_sleep_slot);
+ sd_event_source_unref(m->bus_retry_event_source);
free(m);
}
@@ -510,21 +1099,19 @@ static bool manager_check_idle(void *userdata) {
assert(m);
+ /* Check whether we are idle now. The only case when we decide to be idle is when there's only a loopback
+ * device around, for which we have no configuration, and which already left the PENDING state. In all other
+ * cases we are not idle. */
+
HASHMAP_FOREACH(link, m->links, i) {
- /* we are not woken on udev activity, so let's just wait for the
- * pending udev event */
+ /* We are not woken on udev activity, so let's just wait for the pending udev event */
if (link->state == LINK_STATE_PENDING)
return false;
- if (!link->network)
- continue;
+ if ((link->flags & IFF_LOOPBACK) == 0)
+ return false;
- /* we are not woken on netork activity, so let's stay around */
- if (link_lldp_enabled(link) ||
- link_ipv4ll_enabled(link) ||
- link_dhcp4_server_enabled(link) ||
- link_dhcp4_enabled(link) ||
- link_dhcp6_enabled(link))
+ if (link->network)
return false;
}
@@ -532,8 +1119,19 @@ static bool manager_check_idle(void *userdata) {
}
int manager_run(Manager *m) {
+ Link *link;
+ Iterator i;
+
assert(m);
+ /* The dirty handler will deal with future serialization, but the first one
+ must be done explicitly. */
+
+ manager_save(m);
+
+ HASHMAP_FOREACH(link, m->links, i)
+ link_save(link);
+
if (m->bus)
return bus_event_loop_with_idle(
m->event,
@@ -570,7 +1168,7 @@ bool manager_should_reload(Manager *m) {
}
int manager_rtnl_enumerate_links(Manager *m) {
- _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL, *reply = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
sd_netlink_message *link;
int r;
@@ -605,7 +1203,7 @@ int manager_rtnl_enumerate_links(Manager *m) {
}
int manager_rtnl_enumerate_addresses(Manager *m) {
- _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL, *reply = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
sd_netlink_message *addr;
int r;
@@ -629,7 +1227,7 @@ int manager_rtnl_enumerate_addresses(Manager *m) {
m->enumerating = true;
- k = link_rtnl_process_address(m->rtnl, addr, m);
+ k = manager_rtnl_process_address(m->rtnl, addr, m);
if (k < 0)
r = k;
@@ -639,188 +1237,38 @@ int manager_rtnl_enumerate_addresses(Manager *m) {
return r;
}
-static int set_put_in_addr(Set *s, const struct in_addr *address) {
- char *p;
+int manager_rtnl_enumerate_routes(Manager *m) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
+ sd_netlink_message *route;
int r;
- assert(s);
+ assert(m);
+ assert(m->rtnl);
- r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p);
+ r = sd_rtnl_message_new_route(m->rtnl, &req, RTM_GETROUTE, 0, 0);
if (r < 0)
return r;
- r = set_consume(s, p);
- if (r == -EEXIST)
- return 0;
-
- return r;
-}
-
-static int set_put_in_addrv(Set *s, const struct in_addr *addresses, int n) {
- int r, i, c = 0;
-
- assert(s);
- assert(n <= 0 || addresses);
-
- for (i = 0; i < n; i++) {
- r = set_put_in_addr(s, addresses+i);
- if (r < 0)
- return r;
-
- c += r;
- }
-
- return c;
-}
-
-static void print_string_set(FILE *f, const char *field, Set *s) {
- bool space = false;
- Iterator i;
- char *p;
-
- if (set_isempty(s))
- return;
-
- fputs(field, f);
-
- SET_FOREACH(p, s, i) {
- if (space)
- fputc(' ', f);
- fputs(p, f);
- space = true;
- }
- fputc('\n', f);
-}
-
-int manager_save(Manager *m) {
- _cleanup_set_free_free_ Set *dns = NULL, *ntp = NULL, *domains = NULL;
- Link *link;
- Iterator i;
- _cleanup_free_ char *temp_path = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- LinkOperationalState operstate = LINK_OPERSTATE_OFF;
- const char *operstate_str;
- int r;
-
- assert(m);
- assert(m->state_file);
-
- /* We add all NTP and DNS server to a set, to filter out duplicates */
- dns = set_new(&string_hash_ops);
- if (!dns)
- return -ENOMEM;
-
- ntp = set_new(&string_hash_ops);
- if (!ntp)
- return -ENOMEM;
-
- domains = set_new(&string_hash_ops);
- if (!domains)
- return -ENOMEM;
-
- HASHMAP_FOREACH(link, m->links, i) {
- if (link->flags & IFF_LOOPBACK)
- continue;
-
- if (link->operstate > operstate)
- operstate = link->operstate;
-
- if (!link->network)
- continue;
-
- /* First add the static configured entries */
- r = set_put_strdupv(dns, link->network->dns);
- if (r < 0)
- return r;
-
- r = set_put_strdupv(ntp, link->network->ntp);
- if (r < 0)
- return r;
-
- r = set_put_strdupv(domains, link->network->domains);
- if (r < 0)
- return r;
-
- if (!link->dhcp_lease)
- continue;
-
- /* Secondly, add the entries acquired via DHCP */
- if (link->network->dhcp_dns) {
- const struct in_addr *addresses;
-
- r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses);
- if (r > 0) {
- r = set_put_in_addrv(dns, addresses, r);
- if (r < 0)
- return r;
- } else if (r < 0 && r != -ENOENT)
- return r;
- }
-
- if (link->network->dhcp_ntp) {
- const struct in_addr *addresses;
-
- r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses);
- if (r > 0) {
- r = set_put_in_addrv(ntp, addresses, r);
- if (r < 0)
- return r;
- } else if (r < 0 && r != -ENOENT)
- return r;
- }
-
- if (link->network->dhcp_domains) {
- const char *domainname;
-
- r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname);
- if (r >= 0) {
- r = set_put_strdup(domains, domainname);
- if (r < 0)
- return r;
- } else if (r != -ENOENT)
- return r;
- }
- }
-
- operstate_str = link_operstate_to_string(operstate);
- assert(operstate_str);
-
- r = fopen_temporary(m->state_file, &f, &temp_path);
+ r = sd_netlink_message_request_dump(req, true);
if (r < 0)
return r;
- fchmod(fileno(f), 0644);
-
- fprintf(f,
- "# This is private data. Do not parse.\n"
- "OPER_STATE=%s\n", operstate_str);
+ r = sd_netlink_call(m->rtnl, req, 0, &reply);
+ if (r < 0)
+ return r;
- print_string_set(f, "DNS=", dns);
- print_string_set(f, "NTP=", ntp);
- print_string_set(f, "DOMAINS=", domains);
+ for (route = reply; route; route = sd_netlink_message_next(route)) {
+ int k;
- r = fflush_and_check(f);
- if (r < 0)
- goto fail;
+ m->enumerating = true;
- if (rename(temp_path, m->state_file) < 0) {
- r = -errno;
- goto fail;
- }
+ k = manager_rtnl_process_route(m->rtnl, route, m);
+ if (k < 0)
+ r = k;
- if (m->operational_state != operstate) {
- m->operational_state = operstate;
- r = manager_send_changed(m, "OperationalState", NULL);
- if (r < 0)
- log_error_errno(r, "Could not emit changed OperationalState: %m");
+ m->enumerating = false;
}
- return 0;
-
-fail:
- log_error_errno(r, "Failed to save network state to %s: %m", m->state_file);
- unlink(m->state_file);
- unlink(temp_path);
return r;
}
@@ -844,36 +1292,46 @@ int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, uni
return 0;
}
-const char *address_family_boolean_to_string(AddressFamilyBoolean b) {
- if (b == ADDRESS_FAMILY_YES ||
- b == ADDRESS_FAMILY_NO)
- return yes_no(b == ADDRESS_FAMILY_YES);
+Link* manager_find_uplink(Manager *m, Link *exclude) {
+ _cleanup_free_ struct local_address *gateways = NULL;
+ int n, i;
- if (b == ADDRESS_FAMILY_IPV4)
- return "ipv4";
- if (b == ADDRESS_FAMILY_IPV6)
- return "ipv6";
+ assert(m);
- return NULL;
-}
+ /* Looks for a suitable "uplink", via black magic: an
+ * interface that is up and where the default route with the
+ * highest priority points to. */
-AddressFamilyBoolean address_family_boolean_from_string(const char *s) {
- int r;
+ n = local_gateways(m->rtnl, 0, AF_UNSPEC, &gateways);
+ if (n < 0) {
+ log_warning_errno(n, "Failed to determine list of default gateways: %m");
+ return NULL;
+ }
+
+ for (i = 0; i < n; i++) {
+ Link *link;
+
+ link = hashmap_get(m->links, INT_TO_PTR(gateways[i].ifindex));
+ if (!link) {
+ log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
+ continue;
+ }
- /* Make this a true superset of a boolean */
+ if (link == exclude)
+ continue;
- r = parse_boolean(s);
- if (r > 0)
- return ADDRESS_FAMILY_YES;
- if (r == 0)
- return ADDRESS_FAMILY_NO;
+ if (link->operstate < LINK_OPERSTATE_ROUTABLE)
+ continue;
- if (streq(s, "ipv4"))
- return ADDRESS_FAMILY_IPV4;
- if (streq(s, "ipv6"))
- return ADDRESS_FAMILY_IPV6;
+ return link;
+ }
- return _ADDRESS_FAMILY_BOOLEAN_INVALID;
+ return NULL;
}
-DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option");
+void manager_dirty(Manager *manager) {
+ assert(manager);
+
+ /* the serialized state in /run is no longer up-to-date */
+ manager->dirty = true;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-23 00:45:25 +0000