discover: Add debug flag to config

[petitboot] / discover / platform.c

diff --git a/discover/platform.c b/discover/platform.c
index 11e18f8f0157b62f3e8ad2e3bfb2af5c74f727e5..418b9ea1d68f0cdae48ded8a086680d061645199 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>
 
@@ -11,6 +15,8 @@ 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) {
@@ -85,6 +91,25 @@ static void dump_config(struct config *config)
        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;
@@ -95,6 +120,7 @@ void config_set_defaults(struct config *config)
        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;
@@ -104,6 +130,8 @@ void config_set_defaults(struct config *config)
        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)
@@ -142,6 +170,13 @@ const struct platform *platform_get(void)
        return 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;