int boot_info_query(struct boot_info *info) {
char str[64];
char buf[64];
char *loader_active = NULL;
info->fw_secure_boot = is_efi_secure_boot();
info->fw_secure_boot_setup_mode = is_efi_secure_boot_setup_mode();
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderInfo", &info->loader);
get_boot_entries(info);
if (info->fw_entries_count > 0) {
get_boot_order(info);
qsort(info->fw_entries, info->fw_entries_count, sizeof(struct boot_info_entry), entry_cmp);
find_active_entry(info);
}
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderFirmwareType", &info->fw_type);
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderFirmwareInfo", &info->fw_info);
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderImageIdentifier", &info->loader_image_path);
tilt_slashes(info->loader_image_path);
efi_loader_get_device_part_uuid(&info->loader_part_uuid);
boot_loader_read_entries(info);
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderEntrySelected", &loader_active);
if (loader_active) {
boot_loader_find_active_entry(info, loader_active);
free(loader_active);
}
snprintf(str, sizeof(str), "LoaderEntryOptions-%s", sd_id128_to_string(info->machine_id, buf));
efi_get_variable_string(EFI_VENDOR_LOADER, str, &info->loader_options_added);
return 0;
}
static int get_boot_entries(struct boot_info *info) {
uint16_t *list;
int i, n;
int err = 0;
n = efi_get_boot_options(&list);
if (n < 0)
return n;
for (i = 0; i < n; i++) {
struct boot_info_entry *e;
e = realloc(info->fw_entries, (info->fw_entries_count+1) * sizeof(struct boot_info_entry));
if (!e) {
err = -ENOMEM;
break;
}
info->fw_entries = e;
e = &info->fw_entries[info->fw_entries_count];
memzero(e, sizeof(struct boot_info_entry));
e->order = -1;
err = efi_get_boot_option(list[i], &e->title, &e->part_uuid, &e->path);
if (err < 0)
continue;
if (isempty(e->title)) {
free(e->title);
e->title = NULL;
}
tilt_slashes(e->path);
e->id = list[i];
info->fw_entries_count++;
}
free(list);
return err;
}
ssize_t
efi_va_generate_file_device_path_from_esp(uint8_t *buf, ssize_t size,
const char *devpath, int partition,
const char *relpath,
uint32_t options, va_list ap)
{
int rc;
ssize_t ret = -1, off=0, sz;
struct disk_info info = { 0, };
int fd = -1;
int saved_errno;
fd = open(devpath, O_RDONLY);
if (fd < 0)
goto err;
rc = eb_disk_info_from_fd(fd, &info);
if (rc < 0 && errno != ENOSYS)
goto err;
if (partition > 0)
info.part = partition;
if (options & EFIBOOT_ABBREV_EDD10) {
va_list aq;
va_copy(aq, ap);
info.edd10_devicenum = va_arg(aq, uint32_t);
va_end(aq);
}
if ((options & EFIBOOT_ABBREV_EDD10)
&& (!(options & EFIBOOT_ABBREV_FILE)
&& !(options & EFIBOOT_ABBREV_HD))) {
sz = efidp_make_edd10(buf, size, info.edd10_devicenum);
if (sz < 0)
return -1;
off = sz;
} else if (!(options & EFIBOOT_ABBREV_FILE)
&& !(options & EFIBOOT_ABBREV_HD)) {
/*
* We're probably on a modern kernel, so just parse the
* symlink from /sys/dev/block/$major:$minor and get it
* from there.
*/
sz = make_blockdev_path(buf, size, fd, &info);
if (sz < 0)
return -1;
off += sz;
}
if (!(options & EFIBOOT_ABBREV_FILE)) {
int disk_fd;
int saved_errno;
int rc;
rc = set_disk_and_part_name(&info);
if (rc < 0)
goto err;
disk_fd = open_disk(&info,
(options& EFIBOOT_OPTIONS_WRITE_SIGNATURE)?O_RDWR:O_RDONLY);
if (disk_fd < 0)
goto err;
sz = make_hd_dn(buf, size, off, disk_fd, info.part, options);
saved_errno = errno;
close(disk_fd);
errno = saved_errno;
if (sz < 0)
goto err;
off += sz;
}
char *filepath = strdupa(relpath);
tilt_slashes(filepath);
sz = efidp_make_file(buf+off, size?size-off:0, filepath);
if (sz < 0)
goto err;
off += sz;
sz = efidp_make_end_entire(buf+off, size?size-off:0);
if (sz < 0)
goto err;
off += sz;
ret = off;
err:
saved_errno = errno;
if (info.disk_name) {
free(info.disk_name);
info.disk_name = NULL;
}
if (info.part_name) {
free(info.part_name);
info.part_name = NULL;
}
if (fd >= 0)
close(fd);
errno = saved_errno;
return ret;
}