diff options
| -rw-r--r-- | src/network/networkd-address.c | 6 | ||||
| -rw-r--r-- | src/network/networkd-link.c | 162 | ||||
| -rw-r--r-- | src/network/networkd-link.h | 3 | ||||
| -rw-r--r-- | src/network/networkd-manager.c | 414 | ||||
| -rw-r--r-- | src/network/networkd-network.c | 7 | ||||
| -rw-r--r-- | src/network/networkd.h | 7 |
6 files changed, 337 insertions, 262 deletions
diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c index 8b3694d07f..5d443e9b9b 100644 --- a/src/network/networkd-address.c +++ b/src/network/networkd-address.c @@ -98,7 +98,6 @@ void address_free(Address *address) { if (address->link) { set_remove(address->link->addresses, address); set_remove(address->link->addresses_foreign, address); - link_save(address->link); } free(address); @@ -277,7 +276,8 @@ static int address_add(Link *link, int family, const union in_addr_union *in_add if (r < 0) return r; - link_save(link); + link_update_operstate(link); + link_dirty(link); return 0; } @@ -334,6 +334,8 @@ int address_drop(Address *address) { address_release(address); address_free(address); + link_update_operstate(link); + if (link && !ready) link_check_ready(link); diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index 1b55f99646..ec4b082542 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -130,6 +130,57 @@ static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { 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)) \ @@ -202,7 +253,7 @@ static int link_update_flags(Link *link, sd_netlink_message *m) { link->flags = flags; link->kernel_operstate = operstate; - link_save(link); + link_update_operstate(link); return 0; } @@ -326,6 +377,7 @@ static void link_free(Link *link) { free(link->ifname); + (void)unlink(link->state_file); free(link->state_file); udev_device_unref(link->udev_device); @@ -404,7 +456,7 @@ static void link_enter_unmanaged(Link *link) { link_set_state(link, LINK_STATE_UNMANAGED); - link_save(link); + link_dirty(link); } static int link_stop_clients(Link *link) { @@ -462,7 +514,7 @@ void link_enter_failed(Link *link) { link_stop_clients(link); - link_save(link); + link_dirty(link); } static Address* link_find_dhcp_server_address(Link *link) { @@ -503,7 +555,7 @@ static int link_enter_configured(Link *link) { link_set_state(link, LINK_STATE_CONFIGURED); - link_save(link); + link_dirty(link); return 0; } @@ -1460,14 +1512,14 @@ static int link_new_bound_by_list(Link *link) { } 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; @@ -1502,14 +1554,14 @@ static int link_new_bound_to_list(Link *link) { } 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; @@ -1545,7 +1597,7 @@ static void link_free_bound_to_list(Link *link) { 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; @@ -1559,7 +1611,7 @@ static void link_free_bound_by_list(Link *link) { 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); } } @@ -1583,7 +1635,7 @@ static void link_free_carrier_maps(Link *link) { } if (list_updated) - link_save(link); + link_dirty(link); return; } @@ -1598,6 +1650,7 @@ void link_drop(Link *link) { log_link_debug(link, "Link removed"); + (void)unlink(link->state_file); link_unref(link); return; @@ -1667,7 +1720,7 @@ static int link_enter_join_netdev(Link *link) { link_set_state(link, LINK_STATE_ENSLAVING); - link_save(link); + link_dirty(link); if (!link->network->bridge && !link->network->bond && @@ -2311,55 +2364,6 @@ int link_update(Link *link, sd_netlink_message *m) { 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; @@ -2373,12 +2377,6 @@ int link_save(Link *link) { 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; @@ -2553,8 +2551,6 @@ int link_save(Link *link) { if (r < 0) goto fail; - if (space) - fputc(' ', f); fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); space = true; } @@ -2645,6 +2641,34 @@ fail: 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", diff --git a/src/network/networkd-link.h b/src/network/networkd-link.h index 90ad08a306..af2ba11701 100644 --- a/src/network/networkd-link.h +++ b/src/network/networkd-link.h @@ -129,8 +129,11 @@ int link_initialized(Link *link, struct udev_device *device); void link_check_ready(Link *link); +void link_update_operstate(Link *link); int link_update(Link *link, sd_netlink_message *message); +void link_dirty(Link *link); +void link_clean(Link *link); int link_save(Link *link); int link_carrier_reset(Link *link); diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c index 2b83ee81ed..76d5aa5585 100644 --- a/src/network/networkd-manager.c +++ b/src/network/networkd-manager.c @@ -573,6 +573,213 @@ static int manager_connect_rtnl(Manager *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) { _cleanup_manager_free_ Manager *m = NULL; int r; @@ -594,6 +801,10 @@ 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; @@ -688,8 +899,19 @@ 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, @@ -795,191 +1017,6 @@ 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 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; @@ -1036,3 +1073,10 @@ Link* manager_find_uplink(Manager *m, Link *exclude) { return NULL; } + +void manager_dirty(Manager *manager) { + assert(manager); + + /* the serialized state in /run is no longer up-to-date */ + manager->dirty = true; +} diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c index 5b8ca305bc..97ada56866 100644 --- a/src/network/networkd-network.c +++ b/src/network/networkd-network.c @@ -369,10 +369,9 @@ int network_apply(Manager *manager, Network *network, Link *link) { route->protocol = RTPROT_STATIC; } - if (network->dns || network->ntp) { - r = link_save(link); - if (r < 0) - return r; + if (network->dns || network->ntp || network->domains) { + manager_dirty(manager); + link_dirty(link); } return 0; diff --git a/src/network/networkd.h b/src/network/networkd.h index cbec6d5b7e..6c5a9939be 100644 --- a/src/network/networkd.h +++ b/src/network/networkd.h @@ -48,7 +48,10 @@ struct Manager { struct udev_monitor *udev_monitor; sd_event_source *udev_event_source; - bool enumerating; + bool enumerating:1; + bool dirty:1; + + Set *dirty_links; char *state_file; LinkOperationalState operational_state; @@ -83,7 +86,7 @@ int manager_rtnl_enumerate_addresses(Manager *m); int manager_rtnl_process_address(sd_netlink *nl, sd_netlink_message *message, void *userdata); int manager_send_changed(Manager *m, const char *property, ...) _sentinel_; -int manager_save(Manager *m); +void manager_dirty(Manager *m); int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found); |