diff options
Diffstat (limited to 'src/core/nm-manager.c')
| -rw-r--r-- | src/core/nm-manager.c | 92 |
1 files changed, 57 insertions, 35 deletions
diff --git a/src/core/nm-manager.c b/src/core/nm-manager.c index b66f7fbb..d859c1ea 100644 --- a/src/core/nm-manager.c +++ b/src/core/nm-manager.c @@ -2595,6 +2595,12 @@ get_existing_connection(NMManager *self, NMDevice *device, gboolean *out_generat nm_device_capture_initial_config(device); + if (!nm_device_can_assume_connections(device)) { + nm_device_assume_state_reset(device); + _LOG2D(LOGD_DEVICE, device, "assume: device cannot assume connection"); + return NULL; + } + if (ifindex) { int master_ifindex = nm_platform_link_get_master(priv->platform, ifindex); @@ -2626,39 +2632,47 @@ get_existing_connection(NMManager *self, NMDevice *device, gboolean *out_generat } } - /* The core of the API is nm_device_generate_connection() function and - * update_connection() virtual method and the convenient connection_type - * class attribute. Subclasses supporting the new API must have - * update_connection() implemented, otherwise nm_device_generate_connection() - * returns NULL. - */ - connection = nm_device_generate_connection(device, master, &maybe_later, &gen_error); - if (!connection) { - if (maybe_later) { - /* The device can generate a connection, but it failed for now. - * Give it a chance to match a connection from the state file. */ - only_by_uuid = TRUE; - } else { - nm_device_assume_state_reset(device); - _LOG2D(LOGD_DEVICE, - device, - "assume: cannot generate connection: %s", - gen_error->message); - return NULL; + if (nm_config_data_get_device_config_boolean(NM_CONFIG_GET_DATA, + NM_CONFIG_KEYFILE_KEY_DEVICE_KEEP_CONFIGURATION, + device, + TRUE, + TRUE)) { + /* The core of the API is nm_device_generate_connection() function, based on + * update_connection() virtual method and the @connection_type_supported + * class attribute. Devices that support assuming existing connections must + * have update_connection() implemented, otherwise + * nm_device_generate_connection() returns NULL. */ + connection = nm_device_generate_connection(device, master, &maybe_later, &gen_error); + if (!connection) { + if (maybe_later) { + /* The device can potentially assume connections, but at this + * time we can't generate a connection because no address is + * configured. Allow the device to assume a connection indicated + * in the state file by UUID. */ + only_by_uuid = TRUE; + } else { + nm_device_assume_state_reset(device); + _LOG2D(LOGD_DEVICE, + device, + "assume: cannot generate connection: %s", + gen_error->message); + return NULL; + } } + } else { + connection = NULL; + only_by_uuid = TRUE; + g_set_error(&gen_error, + NM_DEVICE_ERROR, + NM_DEVICE_ERROR_FAILED, + "device %s has 'keep-configuration=no'", + nm_device_get_iface(device)); } nm_device_assume_state_get(device, &assume_state_guess_assume, &assume_state_connection_uuid); - /* Now we need to compare the generated connection to each configured - * connection. The comparison function is the heart of the connection - * assumption implementation and it must compare the connections very - * carefully to sort out various corner cases. Also, the comparison is - * not entirely symmetric. - * - * When no configured connection matches the generated connection, we keep - * the generated connection instead. - */ + /* If the device state file indicates a connection that was active before NM + * restarted, perform basic sanity checks on it. */ if (assume_state_connection_uuid && (connection_checked = nm_settings_get_connection_by_uuid(priv->settings, assume_state_connection_uuid)) @@ -2692,8 +2706,9 @@ get_existing_connection(NMManager *self, NMDevice *device, gboolean *out_generat gs_free NMSettingsConnection **sett_conns = NULL; guint len, i, j; - /* the state file doesn't indicate a connection UUID to assume. Search the - * persistent connections for a matching candidate. */ + /* @assume_state_guess_assume=TRUE means this is the first start of NM + * and the state file contains no UUID. Search persistent connections + * for a matching candidate. */ sett_conns = nm_manager_get_activatable_connections(self, FALSE, FALSE, &len); if (len > 0) { for (i = 0, j = 0; i < len; i++) { @@ -2766,6 +2781,8 @@ get_existing_connection(NMManager *self, NMDevice *device, gboolean *out_generat return matched; } + /* When no configured connection matches the generated connection, we keep + * the generated connection instead. */ _LOG2D(LOGD_DEVICE, device, "assume: generated connection '%s' (%s)", @@ -6803,8 +6820,9 @@ nm_manager_write_device_state(NMManager *self, NMDevice *device, int *out_ifinde guint32 route_metric_default_effective; NMTernary nm_owned; NMDhcpConfig * dhcp_config; - const char * next_server = NULL; - const char * root_path = NULL; + const char * next_server = NULL; + const char * root_path = NULL; + const char * dhcp_bootfile = NULL; NM_SET_OUT(out_ifindex, 0); @@ -6848,8 +6866,11 @@ nm_manager_write_device_state(NMManager *self, NMDevice *device, int *out_ifinde dhcp_config = nm_device_get_dhcp_config(device, AF_INET); if (dhcp_config) { - root_path = nm_dhcp_config_get_option(dhcp_config, "root_path"); - next_server = nm_dhcp_config_get_option(dhcp_config, "next_server"); + root_path = nm_dhcp_config_get_option(dhcp_config, "root_path"); + next_server = nm_dhcp_config_get_option(dhcp_config, "next_server"); + dhcp_bootfile = nm_dhcp_config_get_option(dhcp_config, "filename"); + if (!dhcp_bootfile) + dhcp_bootfile = nm_dhcp_config_get_option(dhcp_config, "bootfile_name"); } if (!nm_config_device_state_write(ifindex, @@ -6860,7 +6881,8 @@ nm_manager_write_device_state(NMManager *self, NMDevice *device, int *out_ifinde route_metric_default_aspired, route_metric_default_effective, next_server, - root_path)) + root_path, + dhcp_bootfile)) return FALSE; NM_SET_OUT(out_ifindex, ifindex); |