static int find_slot(sd_id128_t uuid, const char *path, uint16_t *id) {
_cleanup_free_ uint16_t *options = NULL;
int n, i;
n = efi_get_boot_options(&options);
if (n < 0)
return n;
/* find already existing systemd-boot entry */
for (i = 0; i < n; i++)
if (same_entry(options[i], uuid, path)) {
*id = options[i];
return 1;
}
/* find free slot in the sorted BootXXXX variable list */
for (i = 0; i < n; i++)
if (i != options[i]) {
*id = i;
return 1;
}
/* use the next one */
if (i == 0xffff)
return -ENOSPC;
*id = i;
return 0;
}
static int status_variables(void) {
int n_options, n_order;
uint16_t *options = NULL, *order = NULL;
int r, i;
if (!is_efi_boot()) {
fprintf(stderr, "Not booted with EFI, not showing EFI variables.\n");
return 0;
}
n_options = efi_get_boot_options(&options);
if (n_options < 0) {
if (n_options == -ENOENT)
fprintf(stderr, "Failed to access EFI variables, "
"efivarfs needs to be available at /sys/firmware/efi/efivars/.\n");
else
fprintf(stderr, "Failed to read EFI boot entries: %s\n", strerror(-n_options));
r = n_options;
goto finish;
}
printf("Boot Loader Entries in EFI Variables:\n");
n_order = efi_get_boot_order(&order);
if (n_order == -ENOENT) {
n_order = 0;
} else if (n_order < 0) {
fprintf(stderr, "Failed to read EFI boot order.\n");
r = n_order;
goto finish;
}
/* print entries in BootOrder first */
for (i = 0; i < n_order; i++)
print_efi_option(order[i], true);
/* print remaining entries */
for (i = 0; i < n_options; i++) {
int j;
bool found = false;
for (j = 0; j < n_order; j++)
if (options[i] == order[j]) {
found = true;
break;
}
if (found)
continue;
print_efi_option(options[i], false);
}
r = 0;
finish:
free(options);
free(order);
return r;
}
static int status_variables(void) {
int n_options, n_order;
_cleanup_free_ uint16_t *options = NULL, *order = NULL;
int i;
if (!is_efi_boot()) {
log_notice("Not booted with EFI, not showing EFI variables.");
return 0;
}
n_options = efi_get_boot_options(&options);
if (n_options == -ENOENT)
return log_error_errno(ENOENT, "Failed to access EFI variables, efivarfs"
" needs to be available at /sys/firmware/efi/efivars/.");
else if (n_options < 0)
return log_error_errno(n_options, "Failed to read EFI boot entries: %m");
n_order = efi_get_boot_order(&order);
if (n_order == -ENOENT)
n_order = 0;
else if (n_order < 0)
return log_error_errno(n_order, "Failed to read EFI boot order.");
/* print entries in BootOrder first */
printf("Boot Loader Entries in EFI Variables:\n");
for (i = 0; i < n_order; i++)
print_efi_option(order[i], true);
/* print remaining entries */
for (i = 0; i < n_options; i++) {
int j;
for (j = 0; j < n_order; j++)
if (options[i] == order[j])
goto next;
print_efi_option(options[i], false);
next:
continue;
}
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;
}
static int find_slot(sd_id128_t uuid, const char *path, uint16_t *id) {
uint16_t *options = NULL;
int n_options;
int i;
uint16_t new_id = 0;
bool existing = false;
n_options = efi_get_boot_options(&options);
if (n_options < 0)
return n_options;
/* find already existing systemd-boot entry */
for (i = 0; i < n_options; i++)
if (same_entry(options[i], uuid, path)) {
new_id = options[i];
existing = true;
goto finish;
}
/* find free slot in the sorted BootXXXX variable list */
for (i = 0; i < n_options; i++)
if (i != options[i]) {
new_id = i;
goto finish;
}
/* use the next one */
if (i == 0xffff)
return -ENOSPC;
new_id = i;
finish:
*id = new_id;
free(options);
return existing;
}