-static const char *get_param(struct platform_powerpc *platform,
- const char *name)
-{
- struct param *param;
-
- list_for_each_entry(&platform->params, param, list)
- if (!strcmp(param->name, name))
- return param->value;
- return NULL;
-}
-
-static void set_param(struct platform_powerpc *platform, const char *name,
- const char *value)
-{
- struct param *param;
-
- list_for_each_entry(&platform->params, param, list) {
- if (strcmp(param->name, name))
- continue;
-
- if (!strcmp(param->value, value))
- return;
-
- talloc_free(param->value);
- param->value = talloc_strdup(param, value);
- param->modified = true;
- return;
- }
-
-
- param = talloc(platform, struct param);
- param->modified = true;
- param->name = talloc_strdup(platform, name);
- param->value = talloc_strdup(platform, value);
- list_add(&platform->params, ¶m->list);
-}
-
-static int parse_hwaddr(struct interface_config *ifconf, char *str)
-{
- int i;
-
- if (strlen(str) != strlen("00:00:00:00:00:00"))
- return -1;
-
- for (i = 0; i < HWADDR_SIZE; i++) {
- char byte[3], *endp;
- unsigned long x;
-
- byte[0] = str[i * 3 + 0];
- byte[1] = str[i * 3 + 1];
- byte[2] = '\0';
-
- x = strtoul(byte, &endp, 16);
- if (endp != byte + 2)
- return -1;
-
- ifconf->hwaddr[i] = x & 0xff;
- }
-
- return 0;
-}
-
-static int parse_one_interface_config(struct config *config,
- char *confstr)
-{
- struct interface_config *ifconf;
- char *tok, *saveptr;
-
- ifconf = talloc_zero(config, struct interface_config);
-
- if (!confstr || !strlen(confstr))
- goto out_err;
-
- /* first token should be the mac address */
- tok = strtok_r(confstr, ",", &saveptr);
- if (!tok)
- goto out_err;
-
- if (parse_hwaddr(ifconf, tok))
- goto out_err;
-
- /* second token is the method */
- tok = strtok_r(NULL, ",", &saveptr);
- if (!tok || !strlen(tok) || !strcmp(tok, "ignore")) {
- ifconf->ignore = true;
-
- } else if (!strcmp(tok, "dhcp")) {
- ifconf->method = CONFIG_METHOD_DHCP;
-
- } else if (!strcmp(tok, "static")) {
- ifconf->method = CONFIG_METHOD_STATIC;
-
- /* ip/mask, [optional] gateway, [optional] url */
- tok = strtok_r(NULL, ",", &saveptr);
- if (!tok)
- goto out_err;
- ifconf->static_config.address =
- talloc_strdup(ifconf, tok);
-
- tok = strtok_r(NULL, ",", &saveptr);
- if (tok) {
- ifconf->static_config.gateway =
- talloc_strdup(ifconf, tok);
- }
-
- tok = strtok_r(NULL, ",", &saveptr);
- if (tok) {
- ifconf->static_config.url =
- talloc_strdup(ifconf, tok);
- }
-
- } else {
- pb_log("Unknown network configuration method %s\n", tok);
- goto out_err;
- }
-
- config->network.interfaces = talloc_realloc(config,
- config->network.interfaces,
- struct interface_config *,
- ++config->network.n_interfaces);
-
- config->network.interfaces[config->network.n_interfaces - 1] = ifconf;
-
- return 0;
-out_err:
- talloc_free(ifconf);
- return -1;
-}
-
-static int parse_one_dns_config(struct config *config,
- char *confstr)
-{
- char *tok, *saveptr = NULL;
-
- for (tok = strtok_r(confstr, ",", &saveptr); tok;
- tok = strtok_r(NULL, ",", &saveptr)) {
-
- char *server = talloc_strdup(config, tok);
-
- config->network.dns_servers = talloc_realloc(config,
- config->network.dns_servers, const char *,
- ++config->network.n_dns_servers);
-
- config->network.dns_servers[config->network.n_dns_servers - 1]
- = server;
- }
-
- return 0;
-}
-
-static void populate_network_config(struct platform_powerpc *platform,
- struct config *config)
-{
- char *val, *saveptr = NULL;
- const char *cval;
- int i;
-
- cval = get_param(platform, "petitboot,network");
- if (!cval || !strlen(cval))
- return;
-
- val = talloc_strdup(config, cval);
-
- for (i = 0; ; i++) {
- char *tok;
-
- tok = strtok_r(i == 0 ? val : NULL, " ", &saveptr);
- if (!tok)
- break;
-
- if (!strncasecmp(tok, "dns,", strlen("dns,")))
- parse_one_dns_config(config, tok + strlen("dns,"));
- else
- parse_one_interface_config(config, tok);
-
- }
-
- talloc_free(val);
-}
-
-static int read_bootdev(void *ctx, char **pos, struct autoboot_option *opt)
-{
- char *delim = strchr(*pos, ' ');
- int len, prefix = 0, rc = -1;
- enum device_type type;
-
- if (!strncmp(*pos, "uuid:", strlen("uuid:"))) {
- prefix = strlen("uuid:");
- opt->boot_type = BOOT_DEVICE_UUID;
- rc = 0;
- } else if (!strncmp(*pos, "mac:", strlen("mac:"))) {
- prefix = strlen("mac:");
- opt->boot_type = BOOT_DEVICE_UUID;
- rc = 0;
- } else {
- type = find_device_type(*pos);
- if (type != DEVICE_TYPE_UNKNOWN) {
- opt->type = type;
- opt->boot_type = BOOT_DEVICE_TYPE;
- rc = 0;
- }
- }
-
- if (opt->boot_type == BOOT_DEVICE_UUID) {
- if (delim)
- len = (int)(delim - *pos) - prefix;
- else
- len = strlen(*pos);
-
- opt->uuid = talloc_strndup(ctx, *pos + prefix, len);
- }
-
- /* Always advance pointer to next option or end */
- if (delim)
- *pos = delim + 1;
- else
- *pos += strlen(*pos);
-
- return rc;
-}
-
-static void populate_bootdev_config(struct platform_powerpc *platform,
- struct config *config)
-{
- struct autoboot_option *opt, *new = NULL;
- char *pos, *end, *old_dev = NULL;
- unsigned int n_new = 0;
- const char *val;
- bool conflict;
-
- /* Check for old-style bootdev */
- val = get_param(platform, "petitboot,bootdev");
- if (val && strlen(val)) {
- pos = talloc_strdup(config, val);
- if (!strncmp(val, "uuid:", strlen("uuid:")))
- old_dev = talloc_strdup(config,
- val + strlen("uuid:"));
- else if (!strncmp(val, "mac:", strlen("mac:")))
- old_dev = talloc_strdup(config,
- val + strlen("mac:"));
- }
-
- /* Check for ordered bootdevs */
- val = get_param(platform, "petitboot,bootdevs");
- if (!val || !strlen(val)) {
- pos = end = NULL;
- } else {
- pos = talloc_strdup(config, val);
- end = strchr(pos, '\0');
- }
-
- while (pos && pos < end) {
- opt = talloc(config, struct autoboot_option);
-
- if (read_bootdev(config, &pos, opt)) {
- pb_log("bootdev config is in an unknown format "
- "(expected uuid:... or mac:...)\n");
- talloc_free(opt);
- continue;
- }
-
- new = talloc_realloc(config, new, struct autoboot_option,
- n_new + 1);
- new[n_new] = *opt;
- n_new++;
- talloc_free(opt);
-
- }
-
- if (!n_new && !old_dev) {
- /* If autoboot has been disabled, clear the default options */
- if (!config->autoboot_enabled) {
- talloc_free(config->autoboot_opts);
- config->n_autoboot_opts = 0;
- }
- return;
- }
-
- conflict = old_dev && (!n_new ||
- new[0].boot_type == BOOT_DEVICE_TYPE ||
- /* Canonical UUIDs are 36 characters long */
- strncmp(new[0].uuid, old_dev, 36));
-
- if (!conflict) {
- talloc_free(config->autoboot_opts);
- config->autoboot_opts = new;
- config->n_autoboot_opts = n_new;
- return;
- }
-
- /*
- * Difference detected, defer to old format in case it has been updated
- * recently
- */
- pb_debug("Old autoboot bootdev detected\n");
- talloc_free(config->autoboot_opts);
- config->autoboot_opts = talloc(config, struct autoboot_option);
- config->autoboot_opts[0].boot_type = BOOT_DEVICE_UUID;
- config->autoboot_opts[0].uuid = talloc_strdup(config, old_dev);
- config->n_autoboot_opts = 1;
-}
-
-static void populate_config(struct platform_powerpc *platform,
- struct config *config)
-{
- const char *val;
- char *end;
- unsigned long timeout;
-
- /* if the "auto-boot?' property is present and "false", disable auto
- * boot */
- val = get_param(platform, "auto-boot?");
- config->autoboot_enabled = !val || strcmp(val, "false");
-
- val = get_param(platform, "petitboot,timeout");
- if (val) {
- timeout = strtoul(val, &end, 10);
- if (end != val) {
- if (timeout >= INT_MAX)
- timeout = INT_MAX;
- config->autoboot_timeout_sec = (int)timeout;
- }
- }
-
- val = get_param(platform, "petitboot,language");
- config->lang = val ? talloc_strdup(config, val) : NULL;
-
- populate_network_config(platform, config);
-
- populate_bootdev_config(platform, config);
-
- if (!config->debug) {
- val = get_param(platform, "petitboot,debug?");
- config->debug = val && !strcmp(val, "true");
- }
-
- val = get_param(platform, "petitboot,write?");
- if (val)
- config->allow_writes = !strcmp(val, "true");
-
- val = get_param(platform, "petitboot,snapshots?");
- if (val)
- config->disable_snapshots = !strcmp(val, "false");
-}
-
-static char *iface_config_str(void *ctx, struct interface_config *config)
-{
- char *str;
-
- /* todo: HWADDR size is hardcoded as 6, but we may need to handle
- * different hardware address formats */
- str = talloc_asprintf(ctx, "%02x:%02x:%02x:%02x:%02x:%02x,",
- config->hwaddr[0], config->hwaddr[1],
- config->hwaddr[2], config->hwaddr[3],
- config->hwaddr[4], config->hwaddr[5]);
-
- if (config->ignore) {
- str = talloc_asprintf_append(str, "ignore");
-
- } else if (config->method == CONFIG_METHOD_DHCP) {
- str = talloc_asprintf_append(str, "dhcp");
-
- } else if (config->method == CONFIG_METHOD_STATIC) {
- str = talloc_asprintf_append(str, "static,%s%s%s%s%s",
- config->static_config.address,
- config->static_config.gateway ? "," : "",
- config->static_config.gateway ?: "",
- config->static_config.url ? "," : "",
- config->static_config.url ?: "");
- }
- return str;
-}
-
-static char *dns_config_str(void *ctx, const char **dns_servers, int n)
-{
- char *str;
- int i;
-
- str = talloc_strdup(ctx, "dns,");
- for (i = 0; i < n; i++) {
- str = talloc_asprintf_append(str, "%s%s",
- i == 0 ? "" : ",",
- dns_servers[i]);
- }
-
- return str;
-}
-
-static void update_string_config(struct platform_powerpc *platform,
- const char *name, const char *value)
-{
- const char *cur;
-
- cur = get_param(platform, name);
-
- /* don't set an empty parameter if it doesn't already exist */
- if (!cur && !strlen(value))
- return;
-
- set_param(platform, name, value);
-}
-
-static void update_network_config(struct platform_powerpc *platform,
- struct config *config)
-{
- unsigned int i;
- char *val;
-
- val = talloc_strdup(platform, "");
-
- for (i = 0; i < config->network.n_interfaces; i++) {
- char *iface_str = iface_config_str(platform,
- config->network.interfaces[i]);
- val = talloc_asprintf_append(val, "%s%s",
- *val == '\0' ? "" : " ", iface_str);
- talloc_free(iface_str);
- }
-
- if (config->network.n_dns_servers) {
- char *dns_str = dns_config_str(platform,
- config->network.dns_servers,
- config->network.n_dns_servers);
- val = talloc_asprintf_append(val, "%s%s",
- *val == '\0' ? "" : " ", dns_str);
- talloc_free(dns_str);
- }
-
- update_string_config(platform, "petitboot,network", val);
-
- talloc_free(val);
-}
-
-static void update_bootdev_config(struct platform_powerpc *platform,
- struct config *config)
-{
- char *val = NULL, *boot_str = NULL, *tmp = NULL, *first = NULL;
- struct autoboot_option *opt;
- const char delim = ' ';
- unsigned int i;
-
- if (!config->n_autoboot_opts)
- first = val = "";
- else if (config->autoboot_opts[0].boot_type == BOOT_DEVICE_UUID)
- first = talloc_asprintf(config, "uuid:%s",
- config->autoboot_opts[0].uuid);
- else
- first = "";
-
- for (i = 0; i < config->n_autoboot_opts; i++) {
- opt = &config->autoboot_opts[i];
- switch (opt->boot_type) {
- case BOOT_DEVICE_TYPE:
- boot_str = talloc_asprintf(config, "%s%c",
- device_type_name(opt->type),
- delim);
- break;
- case BOOT_DEVICE_UUID:
- boot_str = talloc_asprintf(config, "uuid:%s%c",
- opt->uuid, delim);
- break;
- }
- tmp = val = talloc_asprintf_append(val, "%s", boot_str);
- }
-
- update_string_config(platform, "petitboot,bootdevs", val);
- update_string_config(platform, "petitboot,bootdev", first);
- talloc_free(tmp);
- if (boot_str)
- talloc_free(boot_str);
-}
-
-static int update_config(struct platform_powerpc *platform,
- struct config *config, struct config *defaults)