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/*
* Copyright Geoff Levand <geoff@infradead.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#define _GNU_SOURCE
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "log/log.h"
#include "talloc/talloc.h"
#include "types/types.h"
#include "parser-conf.h"
#include "parser-utils.h"
#include "paths.h"
struct grub2_state {
struct boot_option *opt;
char *desc_image;
char *desc_initrd;
const char *const *known_names;
};
static void grub2_finish(struct conf_context *conf)
{
struct device *dev = conf->dc->device->device;
struct grub2_state *state = conf->parser_info;
if (!state->desc_image) {
pb_log("%s: %s: no image found\n", __func__, dev->id);
return;
}
assert(state->opt);
assert(state->opt->name);
assert(state->opt->boot_args);
state->opt->description = talloc_asprintf(state->opt, "%s %s %s",
state->desc_image,
(state->desc_initrd ? state->desc_initrd : ""),
state->opt->boot_args);
talloc_free(state->desc_initrd);
state->desc_initrd = NULL;
conf_strip_str(state->opt->boot_args);
conf_strip_str(state->opt->description);
/* opt is persistent, so must be associated with device */
discover_context_add_boot_option(conf->dc, state->opt);
state->opt = talloc_zero(conf->dc, struct boot_option);
state->opt->boot_args = talloc_strdup(state->opt, "");
talloc_free(state->desc_image);
state->desc_image = NULL;
}
static void grub2_process_pair(struct conf_context *conf, const char *name,
char *value)
{
struct device *dev = conf->dc->device->device;
struct grub2_state *state = conf->parser_info;
if (!name || !conf_param_in_list(state->known_names, name))
return;
if (streq(name, "menuentry")) {
char *sep;
grub2_finish(conf);
/* Then start the new image. */
sep = strchr(value, '\'');
if (sep)
*sep = 0;
state->opt->id = talloc_asprintf(state->opt, "%s#%s",
dev->id, value);
state->opt->name = talloc_strdup(state->opt, value);
return;
}
if (streq(name, "linux")) {
char *sep;
sep = strchr(value, ' ');
if (sep)
*sep = 0;
state->opt->boot_image_file = resolve_path(state->opt,
value, conf->dc->device->device_path);
state->desc_image = talloc_strdup(state->opt, value);
if (sep)
state->opt->boot_args = talloc_strdup(state->opt,
sep + 1);
return;
}
if (streq(name, "initrd")) {
state->opt->initrd_file = resolve_path(state->opt,
value, conf->dc->device->device_path);
state->desc_initrd = talloc_asprintf(state, "initrd=%s",
value);
return;
}
pb_log("%s: unknown name: %s\n", __func__, name);
}
static const char *const grub2_conf_files[] = {
"/grub.cfg",
"/menu.lst",
"/grub/grub.cfg",
"/grub/menu.lst",
"/boot/grub/grub.cfg",
"/boot/grub/menu.lst",
"/GRUB.CFG",
"/MENU.LST",
"/GRUB/GRUB.CFG",
"/GRUB/MENU.LST",
"/BOOT/GRUB/GRUB.CFG",
"/BOOT/GRUB/MENU.LST",
NULL
};
static const char *grub2_known_names[] = {
"menuentry",
"linux",
"initrd",
NULL
};
static int grub2_parse(struct discover_context *dc)
{
struct conf_context *conf;
struct grub2_state *state;
int rc;
conf = talloc_zero(dc, struct conf_context);
if (!conf)
return 0;
conf->dc = dc;
conf_init_global_options(conf);
conf->conf_files = grub2_conf_files,
conf->get_pair = conf_get_pair_space;
conf->process_pair = grub2_process_pair;
conf->finish = grub2_finish;
conf->parser_info = state = talloc_zero(conf, struct grub2_state);
state->known_names = grub2_known_names;
/* opt is persistent, so must be associated with device */
state->opt = talloc_zero(conf->dc->device, struct boot_option);
state->opt->boot_args = talloc_strdup(state->opt, "");
rc = conf_parse(conf);
talloc_free(conf);
return rc;
}
define_parser(grub2, grub2_parse);
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