Make read-only guarantee user-settable

[petitboot] / discover / platform.c

diff --git a/discover/platform.c b/discover/platform.c
index 65e9ed4acb4af5662b9a1a3006715226b9c9954d..b1d0f19bafadd8a1ca1059bfe530c04de26eb801 100644 (file)
--- a/discover/platform.c
+++ b/discover/platform.c
@@ -1,7 +1,11 @@
 
+#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>
 
@@ -11,22 +15,7 @@ void                 *platform_ctx;
 static struct platform *platform;
 static struct config   *config;
 
-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 const char *kernel_cmdline_debug = "petitboot.debug";
 
 static void dump_config(struct config *config)
 {
@@ -73,18 +62,41 @@ static void dump_config(struct config *config)
        for (i = 0; i < config->network.n_dns_servers; i++)
                pb_log("  dns server %s\n", config->network.dns_servers[i]);
 
-       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);
+       for (i = 0; i < config->n_autoboot_opts; i++) {
+               if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE)
+                       pb_log("  boot device %d: %s\n", i,
+                              device_type_name(config->autoboot_opts[i].type));
+               else
+                       pb_log("  boot device %d: uuid: %s\n",
+                              i, config->autoboot_opts[i].uuid);
        }
 
+       pb_log("  IPMI boot device 0x%02x%s\n", config->ipmi_bootdev,
+                       config->ipmi_bootdev_persistent ? " (persistent)" : "");
+
+
        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;
@@ -94,17 +106,22 @@ void config_set_defaults(struct config *config)
        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->allow_writes = true;
+
+       config->n_autoboot_opts = 2;
+       config->autoboot_opts = talloc_array(config, struct autoboot_option,
+                                               config->n_autoboot_opts);
+       config->autoboot_opts[0].boot_type = BOOT_DEVICE_TYPE;
+       config->autoboot_opts[0].type = DEVICE_TYPE_NETWORK;
+       config->autoboot_opts[1].boot_type = BOOT_DEVICE_TYPE;
+       config->autoboot_opts[1].type = DEVICE_TYPE_ANY;
 
-       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->ipmi_bootdev = 0;
+       config->ipmi_bootdev_persistent = false;
+
+       config->debug = config_debug_on_cmdline();
 }
 
 int platform_init(void *ctx)
@@ -143,6 +160,14 @@ const struct platform *platform_get(void)
        return platform;
 }
 
+void platform_pre_boot(void)
+{
+       const struct config *config = config_get();
+
+       if (platform && config && platform->pre_boot)
+               platform->pre_boot(platform, config);
+}
+
 int platform_get_sysinfo(struct system_info *info)
 {
        if (platform && platform->get_sysinfo)