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#include <assert.h>
#include <string.h>
#include <i18n/i18n.h>
#include <talloc/talloc.h>
#include <url/url.h>
#include <discover/resource.h>
#include <discover/parser.h>
#include <discover/parser-utils.h>
#include "grub2.h"
static const char *const grub2_conf_files[] = {
"/grub.cfg",
"/menu.lst",
"/grub/grub.cfg",
"/grub2/grub.cfg",
"/grub/menu.lst",
"/boot/grub/grub.cfg",
"/boot/grub2/grub.cfg",
"/boot/grub/menu.lst",
"/GRUB.CFG",
"/MENU.LST",
"/GRUB/GRUB.CFG",
"/GRUB2/GRUB.CFG",
"/GRUB/MENU.LST",
"/BOOT/GRUB/GRUB.CFG",
"/BOOT/GRUB/MENU.LST",
NULL
};
struct grub2_resource_info {
char *root;
char *path;
};
/* we use slightly different resources for grub2 */
struct resource *create_grub2_resource(struct discover_boot_option *opt,
struct discover_device *orig_device,
const char *root, const char *path)
{
struct grub2_resource_info *info;
struct resource *res;
if (strstr(path, "://")) {
struct pb_url *url = pb_url_parse(opt, path);
if (url)
return create_url_resource(opt, url);
}
res = talloc(opt, struct resource);
if (root) {
info = talloc(res, struct grub2_resource_info);
talloc_reference(info, root);
info->root = talloc_strdup(info, root);
info->path = talloc_strdup(info, path);
res->resolved = false;
res->info = info;
} else
resolve_resource_against_device(res, orig_device, path);
return res;
}
bool resolve_grub2_resource(struct device_handler *handler,
struct resource *res)
{
struct grub2_resource_info *info = res->info;
struct discover_device *dev;
assert(!res->resolved);
dev = device_lookup_by_uuid(handler, info->root);
if (!dev)
return false;
resolve_resource_against_device(res, dev, info->path);
talloc_free(info);
return true;
}
static int grub2_parse(struct discover_context *dc)
{
const char * const *filename;
struct grub2_parser *parser;
int len, rc;
char *buf;
/* Support block device boot only at present */
if (dc->event)
return -1;
for (filename = grub2_conf_files; *filename; filename++) {
rc = parser_request_file(dc, dc->device, *filename, &buf, &len);
if (rc)
continue;
parser = grub2_parser_create(dc);
grub2_parser_parse(parser, *filename, buf, len);
device_handler_status_dev_info(dc->handler, dc->device,
_("Parsed GRUB configuration from %s"),
*filename);
talloc_free(buf);
talloc_free(parser);
break;
}
return 0;
}
static struct parser grub2_parser = {
.name = "grub2",
.parse = grub2_parse,
.resolve_resource = resolve_grub2_resource,
};
register_parser(grub2_parser);
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