1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 Kay Sievers
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
30 #include <sys/timex.h>
33 #include "boot-loader.h"
38 #include "conf-files.h"
40 static char *tilt_slashes(char *s) {
52 static int get_boot_entries(struct boot_info *info) {
57 n = efi_get_boot_options(&list);
61 for (i = 0; i < n; i++) {
62 struct boot_info_entry *e;
64 e = realloc(info->fw_entries, (info->fw_entries_count+1) * sizeof(struct boot_info_entry));
71 e = &info->fw_entries[info->fw_entries_count];
72 memset(e, 0, sizeof(struct boot_info_entry));
75 err = efi_get_boot_option(list[i], &e->title, &e->part_uuid, &e->path);
78 tilt_slashes(e->path);
80 info->fw_entries_count++;
87 static int find_active_entry(struct boot_info *info) {
94 err = efi_get_variable(EFI_VENDOR_GLOBAL, "BootCurrent", NULL, &buf, &l);
98 memcpy(&boot_cur, buf, sizeof(uint16_t));
99 for (i = 0; i < info->fw_entries_count; i++) {
100 if (info->fw_entries[i].id != boot_cur)
102 info->fw_entry_active = i;
110 static int get_boot_order(struct boot_info *info) {
114 r = efi_get_boot_order(&info->fw_entries_order);
118 info->fw_entries_order_count = r;
120 for (i = 0; i < info->fw_entries_order_count; i++) {
121 for (k = 0; k < info->fw_entries_count; k++) {
122 if (info->fw_entries[k].id != info->fw_entries_order[i])
124 info->fw_entries[k].order = i;
132 static int entry_cmp(const void *a, const void *b) {
133 const struct boot_info_entry *e1 = a;
134 const struct boot_info_entry *e2 = b;
136 /* boot order of active entries */
137 if (e1->order > 0 && e2->order > 0)
138 return e1->order - e2->order;
140 /* sort active entries before inactive ones */
146 /* order of inactive entries */
147 return e1->id - e2->id;
150 int boot_info_query(struct boot_info *info) {
153 char *loader_active = NULL;
155 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderInfo", &info->loader);
157 get_boot_entries(info);
158 if (info->fw_entries_count > 0) {
159 get_boot_order(info);
160 qsort(info->fw_entries, info->fw_entries_count, sizeof(struct boot_info_entry), entry_cmp);
161 find_active_entry(info);
164 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderFirmwareType", &info->fw_type);
165 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderFirmwareInfo", &info->fw_info);
166 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderImageIdentifier", &info->loader_image_path);
167 tilt_slashes(info->loader_image_path);
168 efi_get_loader_device_part_uuid(&info->loader_part_uuid);
170 boot_loader_read_entries(info);
171 efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderEntrySelected", &loader_active);
173 boot_loader_find_active_entry(info, loader_active);
177 snprintf(str, sizeof(str), "LoaderEntryOptions-%s", sd_id128_to_string(info->machine_id, buf));
178 efi_get_variable_string(EFI_VENDOR_LOADER, str, &info->loader_options_added);