Systemd/src/shared/bootspec.h

/***
  This file is part of systemd.

  Copyright 2017 Zbigniew Jędrzejewski-Szmek

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#pragma once

#include <stdlib.h>

typedef struct BootEntry {
        char *filename;

        char *title;
        char *show_title;
        char *version;
        char *machine_id;
        char *architecture;
        char **options;
        char *kernel;        /* linux is #defined to 1, yikes! */
        char *efi;
        char **initrd;
        char *device_tree;
} BootEntry;

typedef struct BootConfig {
        char *default_pattern;
        char *timeout;
        char *editor;

        char *entry_oneshot;
        char *entry_default;

        BootEntry *entries;
        size_t n_entries;
        ssize_t default_entry;
} BootConfig;

void boot_entry_free(BootEntry *entry);
int boot_entry_load(const char *path, BootEntry *entry);
int boot_entries_find(const char *dir, BootEntry **entries, size_t *n_entries);
int boot_entries_select_default(const BootConfig *config);

int boot_loader_read_conf(const char *path, BootConfig *config);
void boot_config_free(BootConfig *config);
int boot_entries_load_config(const char *esp_path, BootConfig *config);

static inline const char* boot_entry_title(const BootEntry *entry) {
        return entry->show_title ?: entry->title ?: entry->filename;
}