return link->network->ipv6_privacy_extensions;
}
+void link_update_operstate(Link *link) {
+ LinkOperationalState operstate;
+ assert(link);
+
+ if (link->kernel_operstate == IF_OPER_DORMANT)
+ operstate = LINK_OPERSTATE_DORMANT;
+ else if (link_has_carrier(link)) {
+ Address *address;
+ uint8_t scope = RT_SCOPE_NOWHERE;
+ Iterator i;
+
+ /* if we have carrier, check what addresses we have */
+ SET_FOREACH(address, link->addresses, i) {
+ if (!address_is_ready(address))
+ continue;
+
+ if (address->scope < scope)
+ scope = address->scope;
+ }
+
+ /* for operstate we also take foreign addresses into account */
+ SET_FOREACH(address, link->addresses_foreign, i) {
+ if (!address_is_ready(address))
+ continue;
+
+ if (address->scope < scope)
+ scope = address->scope;
+ }
+
+ if (scope < RT_SCOPE_SITE)
+ /* universally accessible addresses found */
+ operstate = LINK_OPERSTATE_ROUTABLE;
+ else if (scope < RT_SCOPE_HOST)
+ /* only link or site local addresses found */
+ operstate = LINK_OPERSTATE_DEGRADED;
+ else
+ /* no useful addresses found */
+ operstate = LINK_OPERSTATE_CARRIER;
+ } else if (link->flags & IFF_UP)
+ operstate = LINK_OPERSTATE_NO_CARRIER;
+ else
+ operstate = LINK_OPERSTATE_OFF;
+
+ if (link->operstate != operstate) {
+ link->operstate = operstate;
+ link_send_changed(link, "OperationalState", NULL);
+ link_dirty(link);
+ manager_dirty(link->manager);
+ }
+}
+
#define FLAG_STRING(string, flag, old, new) \
(((old ^ new) & flag) \
? ((old & flag) ? (" -" string) : (" +" string)) \
link->flags = flags;
link->kernel_operstate = operstate;
- link_save(link);
+ link_update_operstate(link);
return 0;
}
free(link->ifname);
+ (void)unlink(link->state_file);
free(link->state_file);
udev_device_unref(link->udev_device);
link_set_state(link, LINK_STATE_UNMANAGED);
- link_save(link);
+ link_dirty(link);
}
static int link_stop_clients(Link *link) {
link_stop_clients(link);
- link_save(link);
+ link_dirty(link);
}
static Address* link_find_dhcp_server_address(Link *link) {
link_set_state(link, LINK_STATE_CONFIGURED);
- link_save(link);
+ link_dirty(link);
return 0;
}
}
if (list_updated)
- link_save(link);
+ link_dirty(link);
HASHMAP_FOREACH (carrier, link->bound_by_links, i) {
r = link_put_carrier(carrier, link, &carrier->bound_to_links);
if (r < 0)
return r;
- link_save(carrier);
+ link_dirty(carrier);
}
return 0;
}
if (list_updated)
- link_save(link);
+ link_dirty(link);
HASHMAP_FOREACH (carrier, link->bound_to_links, i) {
r = link_put_carrier(carrier, link, &carrier->bound_by_links);
if (r < 0)
return r;
- link_save(carrier);
+ link_dirty(carrier);
}
return 0;
hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex));
if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex)))
- link_save(bound_to);
+ link_dirty(bound_to);
}
return;
hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex));
if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) {
- link_save(bound_by);
+ link_dirty(bound_by);
link_handle_bound_to_list(bound_by);
}
}
}
if (list_updated)
- link_save(link);
+ link_dirty(link);
return;
}
log_link_debug(link, "Link removed");
+ (void)unlink(link->state_file);
link_unref(link);
return;
link_set_state(link, LINK_STATE_ENSLAVING);
- link_save(link);
+ link_dirty(link);
if (!link->network->bridge &&
!link->network->bond &&
return 0;
}
-static void link_update_operstate(Link *link) {
- LinkOperationalState operstate;
- assert(link);
-
- if (link->kernel_operstate == IF_OPER_DORMANT)
- operstate = LINK_OPERSTATE_DORMANT;
- else if (link_has_carrier(link)) {
- Address *address;
- uint8_t scope = RT_SCOPE_NOWHERE;
- Iterator i;
-
- /* if we have carrier, check what addresses we have */
- SET_FOREACH(address, link->addresses, i) {
- if (!address_is_ready(address))
- continue;
-
- if (address->scope < scope)
- scope = address->scope;
- }
-
- /* for operstate we also take foreign addresses into account */
- SET_FOREACH(address, link->addresses_foreign, i) {
- if (!address_is_ready(address))
- continue;
-
- if (address->scope < scope)
- scope = address->scope;
- }
-
- if (scope < RT_SCOPE_SITE)
- /* universally accessible addresses found */
- operstate = LINK_OPERSTATE_ROUTABLE;
- else if (scope < RT_SCOPE_HOST)
- /* only link or site local addresses found */
- operstate = LINK_OPERSTATE_DEGRADED;
- else
- /* no useful addresses found */
- operstate = LINK_OPERSTATE_CARRIER;
- } else if (link->flags & IFF_UP)
- operstate = LINK_OPERSTATE_NO_CARRIER;
- else
- operstate = LINK_OPERSTATE_OFF;
-
- if (link->operstate != operstate) {
- link->operstate = operstate;
- link_send_changed(link, "OperationalState", NULL);
- }
-}
-
int link_save(Link *link) {
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
assert(link->lease_file);
assert(link->manager);
- link_update_operstate(link);
-
- r = manager_save(link->manager);
- if (r < 0)
- return r;
-
if (link->state == LINK_STATE_LINGER) {
unlink(link->state_file);
return 0;
if (r < 0)
goto fail;
- if (space)
- fputc(' ', f);
fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen);
space = true;
}
return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file);
}
+/* The serialized state in /run is no longer up-to-date. */
+void link_dirty(Link *link) {
+ int r;
+
+ assert(link);
+
+ r = set_ensure_allocated(&link->manager->dirty_links, NULL);
+ if (r < 0)
+ /* allocation errors are ignored */
+ return;
+
+ r = set_put(link->manager->dirty_links, link);
+ if (r < 0)
+ /* allocation errors are ignored */
+ return;
+
+ link_ref(link);
+}
+
+/* The serialized state in /run is up-to-date */
+void link_clean(Link *link) {
+ assert(link);
+ assert(link->manager);
+
+ set_remove(link->manager->dirty_links, link);
+ link_unref(link);
+}
+
static const char* const link_state_table[_LINK_STATE_MAX] = {
[LINK_STATE_PENDING] = "pending",
[LINK_STATE_ENSLAVING] = "configuring",
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) {
_cleanup_manager_free_ Manager *m = NULL;
int r;
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;
}
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,
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 != -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");
- }
-
- 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 / platform / upstream / systemd.git / commitdiff