diff options
Diffstat (limited to 'src/core/nm-config.c')
| -rw-r--r-- | src/core/nm-config.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/src/core/nm-config.c b/src/core/nm-config.c index d1f2bbed..d8bf2e3e 100644 --- a/src/core/nm-config.c +++ b/src/core/nm-config.c @@ -2075,6 +2075,210 @@ nm_config_set_connectivity_check_enabled(NMConfig *self, gboolean enabled) g_key_file_unref(keyfile); } +/*****************************************************************************/ + +static gboolean +normalize_hwaddr_for_group_name(const char *hwaddr, char *out, GError **error) +{ + guint8 hwaddr_bin[NM_UTILS_HWADDR_LEN_MAX]; + gsize hwaddr_bin_len; + + if (!_nm_utils_hwaddr_aton(hwaddr, hwaddr_bin, sizeof(hwaddr_bin), &hwaddr_bin_len)) { + g_set_error(error, + NM_DEVICE_ERROR, + NM_DEVICE_ERROR_INVALID_ARGUMENT, + "Invalid MAC address: %s", + hwaddr); + return FALSE; + } + nm_utils_bin2hexstr_full(hwaddr_bin, hwaddr_bin_len, '-', TRUE, out); + return TRUE; +} + +/** + * nm_config_get_device_managed: + * @self: the NMConfig instance + * @device: the interface + * @out: (out): the managed state of the device + * @error: return location for a #GError, or %NULL + * + * Returns: TRUE if there were no errors, FALSE otherwise. + */ +gboolean +nm_config_get_device_managed(NMConfig *self, + NMDevice *device, + NMTernary *out_managed, + gboolean *out_by_mac, + GError **error) +{ + NMConfigPrivate *priv; + const GKeyFile *keyfile = NULL; + gs_free char *group_by_name = NULL; + gs_free char *group_by_mac = NULL; + const char *ifname = nm_device_get_iface(device); + const char *hwaddr = nm_device_get_permanent_hw_address(device); + char mac_group_name[NM_UTILS_HWADDR_LEN_MAX * 3 + 1]; + NMTernary val_by_name, val_by_mac = NM_TERNARY_DEFAULT; + + g_return_val_if_fail(NM_IS_CONFIG(self), FALSE); + g_return_val_if_fail(NM_CONFIG_GET_PRIVATE(self)->config_data, FALSE); + g_return_val_if_fail(out_managed, FALSE); + g_return_val_if_fail(ifname, FALSE); + + priv = NM_CONFIG_GET_PRIVATE(self); + keyfile = _nm_config_data_get_keyfile_intern(priv->config_data); + + if (!keyfile) { + NM_SET_OUT(out_managed, NM_TERNARY_DEFAULT); + NM_SET_OUT(out_by_mac, FALSE); + return TRUE; + } + + group_by_name = + g_strdup_printf(NM_CONFIG_KEYFILE_GROUPPREFIX_INTERN_DEVICE "-manage-%s", ifname); + + val_by_name = (NMTernary) nm_config_keyfile_get_boolean(keyfile, + group_by_name, + NM_CONFIG_KEYFILE_KEY_DEVICE_MANAGED, + NM_TERNARY_DEFAULT); + + /* Devices without a kernel link (i.e. OVS ports) don't have a MAC address */ + if (hwaddr) { + if (!normalize_hwaddr_for_group_name(hwaddr, mac_group_name, error)) + return FALSE; + + group_by_mac = g_strdup_printf(NM_CONFIG_KEYFILE_GROUPPREFIX_INTERN_DEVICE "-manage-%s", + mac_group_name); + + val_by_mac = (NMTernary) nm_config_keyfile_get_boolean(keyfile, + group_by_mac, + NM_CONFIG_KEYFILE_KEY_DEVICE_MANAGED, + NM_TERNARY_DEFAULT); + } + + if (val_by_name != NM_TERNARY_DEFAULT && val_by_mac == NM_TERNARY_DEFAULT) { + NM_SET_OUT(out_managed, val_by_name); + NM_SET_OUT(out_by_mac, FALSE); + return TRUE; + } else if (val_by_mac != NM_TERNARY_DEFAULT && val_by_name == NM_TERNARY_DEFAULT) { + NM_SET_OUT(out_managed, val_by_mac); + NM_SET_OUT(out_by_mac, TRUE); + return TRUE; + } else if (val_by_name == NM_TERNARY_DEFAULT && val_by_mac == NM_TERNARY_DEFAULT) { + NM_SET_OUT(out_managed, NM_TERNARY_DEFAULT); + NM_SET_OUT(out_by_mac, FALSE); + return TRUE; + } else if (val_by_name == val_by_mac) { + NM_SET_OUT(out_managed, val_by_name); + NM_SET_OUT(out_by_mac, FALSE); + return TRUE; + } + + g_set_error(error, + NM_DEVICE_ERROR, + NM_DEVICE_ERROR_FAILED, + "Multiple managed states found for device: %s", + nm_device_get_iface(device)); + return FALSE; +} + +/** + * nm_config_set_device_managed: + * @self: the NMConfig instance + * @device: the NMDevice instance associated with this config change + * @managed: the managed state to set + * @by_mac: if %TRUE, match by MAC address, otherwise by interface name. This is + * only used when @managed = TRUE. + * @error: return location for a #GError, or %NULL + * + * Sets the managed state of the device to the intern keyfile. Here we store the + * configuration received via the D-Bus API. Configurations from other config + * files are still in place and may have higher precedence. + * + * Prior to setting the new state, the existing configuration is removed. If + * @managed is set to %NM_TERNARY_DEFAULT, we only do the removal of the previous + * configuration. + */ +gboolean +nm_config_set_device_managed(NMConfig *self, + NMDevice *device, + NMTernary managed, + gboolean by_mac, + GError **error) +{ + NMConfigPrivate *priv; + g_autoptr(GKeyFile) keyfile = NULL; + char *group; + gs_free char *group_by_name = NULL; + gs_free char *group_by_mac = NULL; + gs_free char *match_value = NULL; + gboolean changed = FALSE; + const char *ifname = nm_device_get_iface(device); + const char *hwaddr = nm_device_get_permanent_hw_address(device); + char mac_group_name[NM_UTILS_HWADDR_LEN_MAX * 3 + 1]; + + g_return_val_if_fail(NM_IS_CONFIG(self), FALSE); + g_return_val_if_fail(NM_CONFIG_GET_PRIVATE(self)->config_data, FALSE); + g_return_val_if_fail(ifname, FALSE); + + if (by_mac && !hwaddr) { + g_set_error(error, + NM_DEVICE_ERROR, + NM_DEVICE_ERROR_INVALID_ARGUMENT, + "the device has no MAC address, but match by MAC was requested"); + return FALSE; + } + + if (hwaddr && !normalize_hwaddr_for_group_name(hwaddr, mac_group_name, error)) + return FALSE; + + priv = NM_CONFIG_GET_PRIVATE(self); + keyfile = nm_config_data_clone_keyfile_intern(priv->config_data); + + /* Remove existing configs. Search them by group name [.intern.device-manage-*]. In + * the intern file, 'device-manage' sections are only used for this purpose, so we + * won't remove any other device's config. */ + group_by_name = + g_strdup_printf(NM_CONFIG_KEYFILE_GROUPPREFIX_INTERN_DEVICE "-manage-%s", ifname); + + if (g_key_file_remove_group(keyfile, group_by_name, NULL)) + changed = TRUE; + + /* Devices without a kernel link (i.e. OVS ports) don't have a MAC address */ + if (hwaddr) { + group_by_mac = g_strdup_printf(NM_CONFIG_KEYFILE_GROUPPREFIX_INTERN_DEVICE "-manage-%s", + mac_group_name); + + if (g_key_file_remove_group(keyfile, group_by_mac, NULL)) + changed = TRUE; + } + + /* If the new state is not explicitly TRUE of FALSE, we only remove the configs */ + if (managed == NM_TERNARY_DEFAULT) + goto done; + + /* Set new values */ + if (by_mac) { + group = group_by_mac; + match_value = g_strdup_printf("mac:%s", hwaddr); + } else { + group = group_by_name; + match_value = g_strdup_printf("interface-name:=%s", ifname); + } + + g_key_file_set_value(keyfile, group, NM_CONFIG_KEYFILE_KEY_MATCH_DEVICE, match_value); + g_key_file_set_value(keyfile, group, NM_CONFIG_KEYFILE_KEY_DEVICE_MANAGED, managed ? "1" : "0"); + changed = TRUE; + +done: + if (changed) + nm_config_set_values(self, keyfile, TRUE, FALSE); + + return TRUE; +} + +/*****************************************************************************/ + /** * nm_config_set_values: * @self: the NMConfig instance |