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authorJeremy Kerr <jk@ozlabs.org>2013-10-18 08:15:19 +0800
committerJeremy Kerr <jk@ozlabs.org>2013-11-13 17:25:33 +0800
commit8e259f91a75cf9fd7f839cd95aa71c2fe07757f1 (patch)
treea0ac6f3a556aaed972ea0c692493a8b0d040b760 /lib
parent4a2dbb71fdcf234302760d20333420a6e6566d56 (diff)
downloadtalos-petitboot-8e259f91a75cf9fd7f839cd95aa71c2fe07757f1.tar.gz
talos-petitboot-8e259f91a75cf9fd7f839cd95aa71c2fe07757f1.zip
lib/pb-config: Implement save method for powerpc nvram strorage
Write values back to nvram. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/pb-config/storage-powerpc-nvram.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/lib/pb-config/storage-powerpc-nvram.c b/lib/pb-config/storage-powerpc-nvram.c
index d80e188..9dc565a 100644
--- a/lib/pb-config/storage-powerpc-nvram.c
+++ b/lib/pb-config/storage-powerpc-nvram.c
@@ -151,6 +151,51 @@ static int parse_nvram(struct powerpc_nvram_storage *nv)
return rc;
}
+static int write_nvram(struct powerpc_nvram_storage *nv)
+{
+ struct process *process;
+ struct param *param;
+ const char *argv[6];
+ int rc;
+
+ argv[0] = "nvram";
+ argv[1] = "--update-config";
+ argv[2] = NULL;
+ argv[3] = "--partition";
+ argv[4] = partition;
+ argv[5] = NULL;
+
+ process = process_create(nv);
+ process->path = "nvram";
+ process->argv = argv;
+
+ list_for_each_entry(&nv->params, param, list) {
+ char *paramstr;
+
+ if (!param->modified)
+ continue;
+
+ paramstr = talloc_asprintf(nv, "%s=%s",
+ param->name, param->value);
+ argv[2] = paramstr;
+
+ rc = process_run_sync(process);
+
+ talloc_free(paramstr);
+
+ if (rc || !WIFEXITED(process->exit_status)
+ || WEXITSTATUS(process->exit_status)) {
+ rc = -1;
+ pb_log("nvram update process returned "
+ "non-zero exit status\n");
+ break;
+ }
+ }
+
+ process_release(process);
+ return rc;
+}
+
static const char *get_param(struct powerpc_nvram_storage *nv,
const char *name)
{
@@ -162,6 +207,32 @@ static const char *get_param(struct powerpc_nvram_storage *nv,
return NULL;
}
+static void set_param(struct powerpc_nvram_storage *nv, const char *name,
+ const char *value)
+{
+ struct param *param;
+
+ list_for_each_entry(&nv->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(nv, struct param);
+ param->modified = true;
+ param->name = talloc_strdup(nv, name);
+ param->value = talloc_strdup(nv, value);
+ list_add(&nv->params, &param->list);
+}
+
static int parse_hwaddr(struct interface_config *ifconf, char *str)
{
int i;
@@ -324,6 +395,98 @@ static void populate_config(struct powerpc_nvram_storage *nv,
populate_network_config(nv, config);
}
+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",
+ config->static_config.address,
+ config->static_config.gateway ? "," : "",
+ config->static_config.gateway ?: "");
+ }
+ 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_network_config(struct powerpc_nvram_storage *nv,
+ struct config *config)
+{
+ char *val;
+ int i;
+
+ val = talloc_strdup(nv, "");
+
+ for (i = 0; i < config->network.n_interfaces; i++) {
+ char *iface_str = iface_config_str(nv,
+ 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(nv, config->network.dns_servers,
+ config->network.n_dns_servers);
+ val = talloc_asprintf_append(val, "%s%s",
+ *val == '\0' ? "" : " ", dns_str);
+ talloc_free(dns_str);
+ }
+
+ set_param(nv, "petitboot,network", val);
+
+ talloc_free(val);
+}
+
+static int update_config(struct powerpc_nvram_storage *nv,
+ struct config *config, struct config *defaults)
+{
+ char *val;
+
+ if (config->autoboot_enabled != defaults->autoboot_enabled) {
+ val = config->autoboot_enabled ? "true" : "false";
+ set_param(nv, "auto-boot?", val);
+ }
+
+ if (config->autoboot_timeout_sec != defaults->autoboot_timeout_sec) {
+ val = talloc_asprintf(nv, "%d", config->autoboot_timeout_sec);
+ set_param(nv, "petitboot,timeout", val);
+ talloc_free(val);
+ }
+
+ if (config->network.n_interfaces)
+ update_network_config(nv, config);
+
+ return write_nvram(nv);
+}
+
static int load(struct config_storage *st, struct config *config)
{
struct powerpc_nvram_storage *nv = to_powerpc_nvram_storage(st);
@@ -338,12 +501,28 @@ static int load(struct config_storage *st, struct config *config)
return 0;
}
+static int save(struct config_storage *st, struct config *config)
+{
+ struct powerpc_nvram_storage *nv = to_powerpc_nvram_storage(st);
+ struct config *defaults;
+ int rc;
+
+ defaults = talloc_zero(nv, struct config);
+ config_set_defaults(defaults);
+
+ rc = update_config(nv, config, defaults);
+
+ talloc_free(defaults);
+ return rc;
+}
+
struct config_storage *create_powerpc_nvram_storage(void *ctx)
{
struct powerpc_nvram_storage *nv;
nv = talloc(ctx, struct powerpc_nvram_storage);
nv->storage.load = load;
+ nv->storage.save = save;
list_init(&nv->params);
return &nv->storage;
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