#include <sys/socket.h>
#include <linux/if.h>
-#include "sd-netlink.h"
#include "sd-daemon.h"
+#include "sd-netlink.h"
-#include "conf-parser.h"
-#include "path-util.h"
-#include "libudev-private.h"
-#include "udev-util.h"
-#include "netlink-util.h"
#include "bus-util.h"
+#include "conf-parser.h"
#include "def.h"
-#include "virt.h"
-#include "set.h"
+#include "libudev-private.h"
#include "local-addresses.h"
-
+#include "netlink-util.h"
#include "networkd.h"
+#include "path-util.h"
+#include "set.h"
+#include "udev-util.h"
+#include "virt.h"
/* use 8 MB for receive socket kernel queue. */
#define RCVBUF_SIZE (8*1024*1024)
/* 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();
return 0;
}
+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:
+ assert_not_reached("invalid address 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 = "ever";
+ else
+ 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 for %s)", buf, prefixlen, 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 for %s)", buf, prefixlen, valid_str);
+ }
+
+ address_update(address, flags, scope, &cinfo);
+
+ break;
+
+ case RTM_DELADDR:
+
+ if (address) {
+ log_link_debug(link, "Removing address: %s/%u (valid for %s)", buf, prefixlen, valid_str);
+ address_drop(address);
+ } else
+ log_link_warning(link, "Removing non-existent address: %s/%u (valid for %s)", buf, prefixlen, 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;
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);
+ return 0;
+}
+
+static int set_put_in_addr(Set *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 = 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);
+}
+
+static 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 != -ENODATA)
+ 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 != -ENODATA)
+ 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 != -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=", 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) {
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;
free(m->state_file);
- 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);
-
while ((link = hashmap_first(m->links)))
link_unref(link);
hashmap_free(m->links);
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);
}
}
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,
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;
return r;
}
-static int set_put_in_addr(Set *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 = 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);
- 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=", 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");
- }
-
- 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);
-}
-
int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) {
AddressPool *p;
int r;
return NULL;
}
+
+void manager_dirty(Manager *manager) {
+ assert(manager);
+
+ /* the serialized state in /run is no longer up-to-date */
+ manager->dirty = true;
+}
projects / thirdparty / systemd.git / blobdiff