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#define _GNU_SOURCE
#include <fcntl.h>
#include <string.h>
#include <log/log.h>
#include <file/file.h>
#include <types/types.h>
#include <talloc/talloc.h>
#include "platform.h"
void *platform_ctx;
static struct platform *platform;
static struct config *config;
static const char *kernel_cmdline_debug = "petitboot.debug";
static const char *device_type_name(enum device_type type)
{
switch (type) {
case DEVICE_TYPE_DISK:
return "disk";
case DEVICE_TYPE_OPTICAL:
return "optical";
case DEVICE_TYPE_NETWORK:
return "network";
case DEVICE_TYPE_ANY:
return "any";
case DEVICE_TYPE_UNKNOWN:
default:
return "unknown";
}
}
static void dump_config(struct config *config)
{
unsigned int i;
pb_log("configuration:\n");
if (config->autoboot_enabled)
pb_log(" autoboot: enabled, %d sec\n",
config->autoboot_timeout_sec);
else
pb_log(" autoboot: disabled\n");
if (config->network.n_interfaces || config->network.n_dns_servers)
pb_log(" network configuration:\n");
if (config->safe_mode)
pb_log(" safe mode: active\n");
for (i = 0; i < config->network.n_interfaces; i++) {
struct interface_config *ifconf =
config->network.interfaces[i];
pb_log(" interface %02x:%02x:%02x:%02x:%02x:%02x\n",
ifconf->hwaddr[0], ifconf->hwaddr[1],
ifconf->hwaddr[2], ifconf->hwaddr[3],
ifconf->hwaddr[4], ifconf->hwaddr[5]);
if (ifconf->ignore) {
pb_log(" ignore\n");
continue;
}
if (ifconf->method == CONFIG_METHOD_DHCP) {
pb_log(" dhcp\n");
} else if (ifconf->method == CONFIG_METHOD_STATIC) {
pb_log(" static:\n");
pb_log(" ip: %s\n", ifconf->static_config.address);
pb_log(" gw: %s\n", ifconf->static_config.gateway);
}
}
for (i = 0; i < config->network.n_dns_servers; i++)
pb_log(" dns server %s\n", config->network.dns_servers[i]);
if (config->boot_device)
pb_log(" boot device %s\n", config->boot_device);
if (config->n_boot_priorities)
pb_log(" boot priority order:\n");
for (i = 0; i < config->n_boot_priorities; i++) {
struct boot_priority *prio = &config->boot_priorities[i];
pb_log(" %10s: %d\n", device_type_name(prio->type),
prio->priority);
}
pb_log(" language: %s\n", config->lang ?: "");
}
static bool config_debug_on_cmdline(void)
{
char buf[600];
int rc, fd;
fd = open("/proc/cmdline", O_RDONLY);
if (fd < 0)
return false;
rc = read(fd, buf, sizeof(buf));
close(fd);
if (rc <= 0)
return false;
return memmem(buf, rc, kernel_cmdline_debug,
strlen(kernel_cmdline_debug)) != NULL;
}
void config_set_defaults(struct config *config)
{
config->autoboot_enabled = true;
config->autoboot_timeout_sec = 10;
config->autoboot_enabled = true;
config->network.interfaces = NULL;
config->network.n_interfaces = 0;
config->network.dns_servers = NULL;
config->network.n_dns_servers = 0;
config->boot_device = NULL;
config->safe_mode = false;
config->lang = NULL;
config->n_boot_priorities = 2;
config->boot_priorities = talloc_array(config, struct boot_priority,
config->n_boot_priorities);
config->boot_priorities[0].type = DEVICE_TYPE_NETWORK;
config->boot_priorities[0].priority = 2;
config->boot_priorities[1].type = DEVICE_TYPE_DISK;
config->boot_priorities[1].priority = 1;
config->debug = config_debug_on_cmdline();
}
int platform_init(void *ctx)
{
extern struct platform *__start_platforms, *__stop_platforms;
struct platform **p;
platform_ctx = talloc_new(ctx);
for (p = &__start_platforms; p < &__stop_platforms; p++) {
if (!(*p)->probe(*p, platform_ctx))
continue;
platform = *p;
break;
}
config = talloc(platform_ctx, struct config);
config_set_defaults(config);
if (platform) {
pb_log("Detected platform type: %s\n", platform->name);
if (platform->load_config)
platform->load_config(platform, config);
} else {
pb_log("No platform type detected, some platform-specific "
"functionality will be disabled\n");
}
dump_config(config);
return 0;
}
const struct platform *platform_get(void)
{
return platform;
}
void platform_finalise_config(void)
{
if (platform && platform->finalise_config)
platform->finalise_config(platform);
}
int platform_get_sysinfo(struct system_info *info)
{
if (platform && platform->get_sysinfo)
return platform->get_sysinfo(platform, info);
return -1;
}
int config_set(struct config *newconfig)
{
int rc;
if (!platform || !platform->save_config)
return -1;
if (newconfig == config)
return 0;
pb_log("new configuration data received\n");
dump_config(newconfig);
rc = platform->save_config(platform, newconfig);
if (!rc)
config = talloc_steal(platform_ctx, newconfig);
else
pb_log("error saving new configuration; changes lost\n");
return rc;
}
/* A non-exported function to allow the test infrastructure to initialise
* (and change) the configuration variables */
struct parser_test;
struct config __attribute__((unused)) *test_config_init(
struct parser_test *test);
struct config *test_config_init(struct parser_test *test)
{
config = talloc(test, struct config);
config_set_defaults(config);
return config;
}
const struct config *config_get(void)
{
return config;
}
void config_set_autoboot(bool autoboot_enabled)
{
config->autoboot_enabled = autoboot_enabled;
pb_log("set autoboot: %s\n",
config->autoboot_enabled ? "enabled" : "disabled");
}
int platform_fini(void)
{
talloc_free(platform_ctx);
return 0;
}
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