SymbX/systemd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bootctl: split out "status" verb too

Browse Source
This commit is contained in:
Lennart Poettering
2022-12-19 12:08:02 +01:00
parent 6d8ca25766
commit da36788f65
7 changed files with 647 additions and 603 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meson.build
+2
View File
@@ -2613,6 +2613,8 @@ if conf.get('HAVE_BLKID') == 1 and conf.get('HAVE_GNU_EFI') == 1
'src/boot/bootctl-reboot-to-firmware.h',
'src/boot/bootctl-set-efivar.c',
'src/boot/bootctl-set-efivar.h',
'src/boot/bootctl-status.c',
'src/boot/bootctl-status.h',
'src/boot/bootctl-systemd-efi-options.c',
'src/boot/bootctl-systemd-efi-options.h',
'src/boot/bootctl-util.c',
src/boot/bootctl-status.c
+537
View File
@@ -0,0 +1,537 @@
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/mman.h>
#include <unistd.h>
#include "bootctl.h"
#include "bootctl-status.h"
#include "bootctl-util.h"
#include "bootspec.h"
#include "chase-symlinks.h"
#include "devnum-util.h"
#include "dirent-util.h"
#include "efi-api.h"
#include "efi-loader.h"
#include "errno-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "find-esp.h"
#include "path-util.h"
#include "pretty-print.h"
#include "terminal-util.h"
#include "tpm2-util.h"
static int boot_config_load_and_select(
BootConfig *config,
const char *esp_path,
dev_t esp_devid,
const char *xbootldr_path,
dev_t xbootldr_devid) {
int r;
/* If XBOOTLDR and ESP actually refer to the same block device, suppress XBOOTLDR, since it would
* find the same entries twice. */
bool same = esp_path && xbootldr_path && devnum_set_and_equal(esp_devid, xbootldr_devid);
r = boot_config_load(config, esp_path, same ? NULL : xbootldr_path);
if (r < 0)
return r;
if (!arg_root) {
_cleanup_strv_free_ char **efi_entries = NULL;
r = efi_loader_get_entries(&efi_entries);
if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
log_debug_errno(r, "Boot loader reported no entries.");
else if (r < 0)
log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m");
else
(void) boot_config_augment_from_loader(config, efi_entries, /* only_auto= */ false);
}
return boot_config_select_special_entries(config, /* skip_efivars= */ !!arg_root);
}
static int status_entries(
const BootConfig *config,
const char *esp_path,
sd_id128_t esp_partition_uuid,
const char *xbootldr_path,
sd_id128_t xbootldr_partition_uuid) {
sd_id128_t dollar_boot_partition_uuid;
const char *dollar_boot_path;
int r;
assert(config);
assert(esp_path || xbootldr_path);
if (xbootldr_path) {
dollar_boot_path = xbootldr_path;
dollar_boot_partition_uuid = xbootldr_partition_uuid;
} else {
dollar_boot_path = esp_path;
dollar_boot_partition_uuid = esp_partition_uuid;
}
printf("%sBoot Loader Entries:%s\n"
" $BOOT: %s", ansi_underline(), ansi_normal(), dollar_boot_path);
if (!sd_id128_is_null(dollar_boot_partition_uuid))
printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")",
SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid));
printf("\n\n");
if (config->default_entry < 0)
printf("%zu entries, no entry could be determined as default.\n", config->n_entries);
else {
printf("%sDefault Boot Loader Entry:%s\n", ansi_underline(), ansi_normal());
r = show_boot_entry(
boot_config_default_entry(config),
/* show_as_default= */ false,
/* show_as_selected= */ false,
/* show_discovered= */ false);
if (r > 0)
/* < 0 is already logged by the function itself, let's just emit an extra warning if
the default entry is broken */
printf("\nWARNING: default boot entry is broken\n");
}
return 0;
}
static int print_efi_option(uint16_t id, int *n_printed, bool in_order) {
_cleanup_free_ char *title = NULL;
_cleanup_free_ char *path = NULL;
sd_id128_t partition;
bool active;
int r;
assert(n_printed);
r = efi_get_boot_option(id, &title, &partition, &path, &active);
if (r == -ENOENT) {
log_debug_errno(r, "Boot option 0x%04X referenced but missing, ignoring: %m", id);
return 0;
}
if (r < 0)
return log_error_errno(r, "Failed to read boot option 0x%04X: %m", id);
/* print only configured entries with partition information */
if (!path || sd_id128_is_null(partition)) {
log_debug("Ignoring boot entry 0x%04X without partition information.", id);
return 0;
}
efi_tilt_backslashes(path);
if (*n_printed == 0) /* Print section title before first entry */
printf("%sBoot Loaders Listed in EFI Variables:%s\n", ansi_underline(), ansi_normal());
printf(" Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal());
printf(" ID: 0x%04X\n", id);
printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : "");
printf(" Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
SD_ID128_FORMAT_VAL(partition));
printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path);
printf("\n");
(*n_printed)++;
return 1;
}
static int status_variables(void) {
_cleanup_free_ uint16_t *options = NULL, *order = NULL;
int n_options, n_order, n_printed = 0;
n_options = efi_get_boot_options(&options);
if (n_options == -ENOENT)
return log_error_errno(n_options,
"Failed to access EFI variables, efivarfs"
" needs to be available at /sys/firmware/efi/efivars/.");
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: %m");
/* print entries in BootOrder first */
for (int i = 0; i < n_order; i++)
(void) print_efi_option(order[i], &n_printed, /* in_order= */ true);
/* print remaining entries */
for (int i = 0; i < n_options; i++) {
for (int j = 0; j < n_order; j++)
if (options[i] == order[j])
goto next_option;
(void) print_efi_option(options[i], &n_printed, /* in_order= */ false);
next_option:
continue;
}
if (n_printed == 0)
printf("No boot loaders listed in EFI Variables.\n\n");
return 0;
}
static int enumerate_binaries(
const char *esp_path,
const char *path,
const char *prefix,
char **previous,
bool *is_first) {
_cleanup_closedir_ DIR *d = NULL;
_cleanup_free_ char *p = NULL;
int c = 0, r;
assert(esp_path);
assert(path);
assert(previous);
assert(is_first);
r = chase_symlinks_and_opendir(path, esp_path, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, &p, &d);
if (r == -ENOENT)
return 0;
if (r < 0)
return log_error_errno(r, "Failed to read \"%s/%s\": %m", esp_path, path);
FOREACH_DIRENT(de, d, break) {
_cleanup_free_ char *v = NULL;
_cleanup_close_ int fd = -1;
if (!endswith_no_case(de->d_name, ".efi"))
continue;
if (prefix && !startswith_no_case(de->d_name, prefix))
continue;
fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
if (fd < 0)
return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
r = get_file_version(fd, &v);
if (r < 0)
return r;
if (*previous) { /* let's output the previous entry now, since now we know that there will be one more, and can draw the tree glyph properly */
printf(" %s %s%s\n",
*is_first ? "File:" : " ",
special_glyph(SPECIAL_GLYPH_TREE_BRANCH), *previous);
*is_first = false;
*previous = mfree(*previous);
}
/* Do not output this entry immediately, but store what should be printed in a state
* variable, because we only will know the tree glyph to print (branch or final edge) once we
* read one more entry */
if (r > 0)
r = asprintf(previous, "/%s/%s (%s%s%s)", path, de->d_name, ansi_highlight(), v, ansi_normal());
else
r = asprintf(previous, "/%s/%s", path, de->d_name);
if (r < 0)
return log_oom();
c++;
}
return c;
}
static int status_binaries(const char *esp_path, sd_id128_t partition) {
_cleanup_free_ char *last = NULL;
bool is_first = true;
int r, k;
printf("%sAvailable Boot Loaders on ESP:%s\n", ansi_underline(), ansi_normal());
if (!esp_path) {
printf(" ESP: Cannot find or access mount point of ESP.\n\n");
return -ENOENT;
}
printf(" ESP: %s", esp_path);
if (!sd_id128_is_null(partition))
printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition));
printf("\n");
r = enumerate_binaries(esp_path, "EFI/systemd", NULL, &last, &is_first);
if (r < 0) {
printf("\n");
return r;
}
k = enumerate_binaries(esp_path, "EFI/BOOT", "boot", &last, &is_first);
if (k < 0) {
printf("\n");
return k;
}
if (last) /* let's output the last entry now, since now we know that there will be no more, and can draw the tree glyph properly */
printf(" %s %s%s\n",
is_first ? "File:" : " ",
special_glyph(SPECIAL_GLYPH_TREE_RIGHT), last);
if (r == 0 && !arg_quiet)
log_info("systemd-boot not installed in ESP.");
if (k == 0 && !arg_quiet)
log_info("No default/fallback boot loader installed in ESP.");
printf("\n");
return 0;
}
static void read_efi_var(const char *variable, char **ret) {
int r;
r = efi_get_variable_string(variable, ret);
if (r < 0 && r != -ENOENT)
log_warning_errno(r, "Failed to read EFI variable %s: %m", variable);
}
static void print_yes_no_line(bool first, bool good, const char *name) {
printf("%s%s %s\n",
first ? " Features: " : " ",
COLOR_MARK_BOOL(good),
name);
}
int verb_status(int argc, char *argv[], void *userdata) {
sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL;
dev_t esp_devid = 0, xbootldr_devid = 0;
int r, k;
r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, &esp_uuid, &esp_devid);
if (arg_print_esp_path) {
if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only
* error the find_esp_and_warn() won't log on its own) */
return log_error_errno(r, "Failed to determine ESP location: %m");
if (r < 0)
return r;
puts(arg_esp_path);
}
r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, &xbootldr_uuid, &xbootldr_devid);
if (arg_print_dollar_boot_path) {
if (r == -EACCES)
return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
if (r < 0)
return r;
const char *path = arg_dollar_boot_path();
if (!path)
return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m");
puts(path);
}
if (arg_print_esp_path || arg_print_dollar_boot_path)
return 0;
r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just
* show what we can show */
pager_open(arg_pager_flags);
if (!arg_root && is_efi_boot()) {
static const struct {
uint64_t flag;
const char *name;
} loader_flags[] = {
{ EFI_LOADER_FEATURE_BOOT_COUNTING, "Boot counting" },
{ EFI_LOADER_FEATURE_CONFIG_TIMEOUT, "Menu timeout control" },
{ EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control" },
{ EFI_LOADER_FEATURE_ENTRY_DEFAULT, "Default entry control" },
{ EFI_LOADER_FEATURE_ENTRY_ONESHOT, "One-shot entry control" },
{ EFI_LOADER_FEATURE_XBOOTLDR, "Support for XBOOTLDR partition" },
{ EFI_LOADER_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" },
{ EFI_LOADER_FEATURE_LOAD_DRIVER, "Load drop-in drivers" },
{ EFI_LOADER_FEATURE_SORT_KEY, "Support Type #1 sort-key field" },
{ EFI_LOADER_FEATURE_SAVED_ENTRY, "Support @saved pseudo-entry" },
{ EFI_LOADER_FEATURE_DEVICETREE, "Support Type #1 devicetree field" },
};
static const struct {
uint64_t flag;
const char *name;
} stub_flags[] = {
{ EFI_STUB_FEATURE_REPORT_BOOT_PARTITION, "Stub sets ESP information" },
{ EFI_STUB_FEATURE_PICK_UP_CREDENTIALS, "Picks up credentials from boot partition" },
{ EFI_STUB_FEATURE_PICK_UP_SYSEXTS, "Picks up system extension images from boot partition" },
{ EFI_STUB_FEATURE_THREE_PCRS, "Measures kernel+command line+sysexts" },
{ EFI_STUB_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" },
};
_cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL;
sd_id128_t loader_part_uuid = SD_ID128_NULL;
uint64_t loader_features = 0, stub_features = 0;
Tpm2Support s;
int have;
read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareType), &fw_type);
read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareInfo), &fw_info);
read_efi_var(EFI_LOADER_VARIABLE(LoaderInfo), &loader);
read_efi_var(EFI_LOADER_VARIABLE(StubInfo), &stub);
read_efi_var(EFI_LOADER_VARIABLE(LoaderImageIdentifier), &loader_path);
(void) efi_loader_get_features(&loader_features);
(void) efi_stub_get_features(&stub_features);
if (loader_path)
efi_tilt_backslashes(loader_path);
k = efi_loader_get_device_part_uuid(&loader_part_uuid);
if (k < 0 && k != -ENOENT)
r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m");
SecureBootMode secure = efi_get_secure_boot_mode();
printf("%sSystem:%s\n", ansi_underline(), ansi_normal());
printf(" Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal());
printf(" Firmware Arch: %s\n", get_efi_arch());
printf(" Secure Boot: %sd (%s)\n",
enable_disable(IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED)),
secure_boot_mode_to_string(secure));
s = tpm2_support();
printf(" TPM2 Support: %s%s%s\n",
FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? ansi_highlight_green() :
(s & (TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER)) != 0 ? ansi_highlight_red() : ansi_highlight_yellow(),
FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? "yes" :
(s & TPM2_SUPPORT_FIRMWARE) ? "firmware only, driver unavailable" :
(s & TPM2_SUPPORT_DRIVER) ? "driver only, firmware unavailable" : "no",
ansi_normal());
k = efi_get_reboot_to_firmware();
if (k > 0)
printf(" Boot into FW: %sactive%s\n", ansi_highlight_yellow(), ansi_normal());
else if (k == 0)
printf(" Boot into FW: supported\n");
else if (k == -EOPNOTSUPP)
printf(" Boot into FW: not supported\n");
else {
errno = -k;
printf(" Boot into FW: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal());
}
printf("\n");
printf("%sCurrent Boot Loader:%s\n", ansi_underline(), ansi_normal());
printf(" Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal());
for (size_t i = 0; i < ELEMENTSOF(loader_flags); i++)
print_yes_no_line(i == 0, FLAGS_SET(loader_features, loader_flags[i].flag), loader_flags[i].name);
sd_id128_t bootloader_esp_uuid;
bool have_bootloader_esp_uuid = efi_loader_get_device_part_uuid(&bootloader_esp_uuid) >= 0;
print_yes_no_line(false, have_bootloader_esp_uuid, "Boot loader sets ESP information");
if (have_bootloader_esp_uuid && !sd_id128_is_null(esp_uuid) &&
!sd_id128_equal(esp_uuid, bootloader_esp_uuid))
printf("WARNING: The boot loader reports a different ESP UUID than detected ("SD_ID128_UUID_FORMAT_STR" vs. "SD_ID128_UUID_FORMAT_STR")!\n",
SD_ID128_FORMAT_VAL(bootloader_esp_uuid),
SD_ID128_FORMAT_VAL(esp_uuid));
if (stub) {
printf(" Stub: %s\n", stub);
for (size_t i = 0; i < ELEMENTSOF(stub_flags); i++)
print_yes_no_line(i == 0, FLAGS_SET(stub_features, stub_flags[i].flag), stub_flags[i].name);
}
if (!sd_id128_is_null(loader_part_uuid))
printf(" ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
SD_ID128_FORMAT_VAL(loader_part_uuid));
else
printf(" ESP: n/a\n");
printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path));
printf("\n");
printf("%sRandom Seed:%s\n", ansi_underline(), ansi_normal());
have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderSystemToken)), F_OK) >= 0;
printf(" System Token: %s\n", have ? "set" : "not set");
if (arg_esp_path) {
_cleanup_free_ char *p = NULL;
p = path_join(arg_esp_path, "/loader/random-seed");
if (!p)
return log_oom();
have = access(p, F_OK) >= 0;
printf(" Exists: %s\n", yes_no(have));
}
printf("\n");
} else
printf("%sSystem:%s\n"
"Not booted with EFI\n\n",
ansi_underline(), ansi_normal());
if (arg_esp_path) {
k = status_binaries(arg_esp_path, esp_uuid);
if (k < 0)
r = k;
}
if (!arg_root && is_efi_boot()) {
k = status_variables();
if (k < 0)
r = k;
}
if (arg_esp_path || arg_xbootldr_path) {
_cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
k = boot_config_load_and_select(&config,
arg_esp_path, esp_devid,
arg_xbootldr_path, xbootldr_devid);
if (k < 0)
r = k;
else {
k = status_entries(&config,
arg_esp_path, esp_uuid,
arg_xbootldr_path, xbootldr_uuid);
if (k < 0)
r = k;
}
}
return r;
}
int verb_list(int argc, char *argv[], void *userdata) {
_cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
dev_t esp_devid = 0, xbootldr_devid = 0;
int r;
/* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two
* things: turn off logging about access errors and turn off potentially privileged device probing.
* Here we're interested in the latter but not the former, hence request the mode, and log about
* EACCES. */
r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, NULL, &esp_devid);
if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */
return log_error_errno(r, "Failed to determine ESP location: %m");
if (r < 0)
return r;
r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, NULL, &xbootldr_devid);
if (r == -EACCES)
return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
if (r < 0)
return r;
r = boot_config_load_and_select(&config, arg_esp_path, esp_devid, arg_xbootldr_path, xbootldr_devid);
if (r < 0)
return r;
if (config.n_entries == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) {
log_info("No boot loader entries found.");
return 0;
}
pager_open(arg_pager_flags);
return show_boot_entries(&config, arg_json_format_flags);
}
src/boot/bootctl-status.h
+4
View File
@@ -0,0 +1,4 @@
/* SPDX-License-Identifier: LGPL-2.1-or-later */
int verb_status(int argc, char *argv[], void *userdata);
int verb_list(int argc, char *argv[], void *userdata);
src/boot/bootctl-util.c
+88
View File
@@ -1,7 +1,11 @@
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/mman.h>
#include "bootctl.h"
#include "bootctl-util.h"
#include "fileio.h"
#include "stat-util.h"
#include "sync-util.h"
int sync_everything(void) {
@@ -21,3 +25,87 @@ int sync_everything(void) {
return ret;
}
const char *get_efi_arch(void) {
/* Detect EFI firmware architecture of the running system. On mixed mode systems, it could be 32bit
* while the kernel is running in 64bit. */
#ifdef __x86_64__
_cleanup_free_ char *platform_size = NULL;
int r;
r = read_one_line_file("/sys/firmware/efi/fw_platform_size", &platform_size);
if (r == -ENOENT)
return EFI_MACHINE_TYPE_NAME;
if (r < 0) {
log_warning_errno(r, "Error reading EFI firmware word size, assuming '%i': %m", __WORDSIZE);
return EFI_MACHINE_TYPE_NAME;
}
if (streq(platform_size, "64"))
return EFI_MACHINE_TYPE_NAME;
if (streq(platform_size, "32"))
return "ia32";
log_warning(
"Unknown EFI firmware word size '%s', using default word size '%i' instead.",
platform_size,
__WORDSIZE);
#endif
return EFI_MACHINE_TYPE_NAME;
}
/* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */
int get_file_version(int fd, char **ret) {
struct stat st;
char *buf;
const char *s, *e;
char *x = NULL;
int r;
assert(fd >= 0);
assert(ret);
if (fstat(fd, &st) < 0)
return log_error_errno(errno, "Failed to stat EFI binary: %m");
r = stat_verify_regular(&st);
if (r < 0)
return log_error_errno(r, "EFI binary is not a regular file: %m");
if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size)) {
*ret = NULL;
return 0;
}
buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (buf == MAP_FAILED)
return log_error_errno(errno, "Failed to memory map EFI binary: %m");
s = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
if (!s) {
r = -ESRCH;
goto finish;
}
e = memmem_safe(s, st.st_size - (s - buf), " ####", 5);
if (!e || e - s < 3) {
r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string.");
goto finish;
}
x = strndup(s, e - s);
if (!x) {
r = log_oom();
goto finish;
}
r = 1;
finish:
(void) munmap(buf, st.st_size);
if (r >= 0)
*ret = x;
return r;
}
src/boot/bootctl-util.h
+4
View File
@@ -2,3 +2,7 @@
#pragma once
int sync_everything(void);
const char *get_efi_arch(void);
int get_file_version(int fd, char **ret);
src/boot/bootctl.c
+4 -603
View File
@@ -17,8 +17,9 @@
#include "bootctl.h"
#include "bootctl-random-seed.h"
#include "bootctl-reboot-to-firmware.h"
#include "bootctl-systemd-efi-options.h"
#include "bootctl-set-efivar.h"
#include "bootctl-status.h"
#include "bootctl-systemd-efi-options.h"
#include "bootctl-util.h"
#include "bootspec.h"
#include "build.h"
@@ -107,16 +108,11 @@ STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
STATIC_DESTRUCTOR_REGISTER(arg_efi_boot_option_description, freep);
static const char *arg_dollar_boot_path(void) {
/* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */
return arg_xbootldr_path ?: arg_esp_path;
}
static const char *pick_efi_boot_option_description(void) {
return arg_efi_boot_option_description ?: "Linux Boot Manager";
}
static int acquire_esp(
int acquire_esp(
bool unprivileged_mode,
bool graceful,
uint32_t *ret_part,
@@ -153,7 +149,7 @@ static int acquire_esp(
return 0;
}
static int acquire_xbootldr(
int acquire_xbootldr(
bool unprivileged_mode,
sd_id128_t *ret_uuid,
dev_t *ret_devid) {
@@ -394,353 +390,6 @@ static int settle_make_entry_directory(void) {
return 0;
}
/* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */
static int get_file_version(int fd, char **v) {
struct stat st;
char *buf;
const char *s, *e;
char *x = NULL;
int r;
assert(fd >= 0);
assert(v);
if (fstat(fd, &st) < 0)
return log_error_errno(errno, "Failed to stat EFI binary: %m");
r = stat_verify_regular(&st);
if (r < 0)
return log_error_errno(r, "EFI binary is not a regular file: %m");
if (st.st_size < 27 || file_offset_beyond_memory_size(st.st_size)) {
*v = NULL;
return 0;
}
buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (buf == MAP_FAILED)
return log_error_errno(errno, "Failed to memory map EFI binary: %m");
s = mempmem_safe(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
if (!s)
goto finish;
e = memmem_safe(s, st.st_size - (s - buf), " ####", 5);
if (!e || e - s < 3) {
r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string.");
goto finish;
}
x = strndup(s, e - s);
if (!x) {
r = log_oom();
goto finish;
}
r = 1;
finish:
(void) munmap(buf, st.st_size);
*v = x;
return r;
}
static const char *get_efi_arch(void) {
/* Detect EFI firmware architecture of the running system. On mixed mode systems, it could be 32bit
* while the kernel is running in 64bit. */
#ifdef __x86_64__
_cleanup_free_ char *platform_size = NULL;
int r;
r = read_one_line_file("/sys/firmware/efi/fw_platform_size", &platform_size);
if (r == -ENOENT)
return EFI_MACHINE_TYPE_NAME;
if (r < 0) {
log_warning_errno(r, "Error reading EFI firmware word size, assuming '%i': %m", __WORDSIZE);
return EFI_MACHINE_TYPE_NAME;
}
if (streq(platform_size, "64"))
return EFI_MACHINE_TYPE_NAME;
if (streq(platform_size, "32"))
return "ia32";
log_warning(
"Unknown EFI firmware word size '%s', using default word size '%i' instead.",
platform_size,
__WORDSIZE);
#endif
return EFI_MACHINE_TYPE_NAME;
}
static int enumerate_binaries(
const char *esp_path,
const char *path,
const char *prefix,
char **previous,
bool *is_first) {
_cleanup_closedir_ DIR *d = NULL;
_cleanup_free_ char *p = NULL;
int c = 0, r;
assert(esp_path);
assert(path);
assert(previous);
assert(is_first);
r = chase_symlinks_and_opendir(path, esp_path, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, &p, &d);
if (r == -ENOENT)
return 0;
if (r < 0)
return log_error_errno(r, "Failed to read \"%s/%s\": %m", esp_path, path);
FOREACH_DIRENT(de, d, break) {
_cleanup_free_ char *v = NULL;
_cleanup_close_ int fd = -1;
if (!endswith_no_case(de->d_name, ".efi"))
continue;
if (prefix && !startswith_no_case(de->d_name, prefix))
continue;
fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
if (fd < 0)
return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
r = get_file_version(fd, &v);
if (r < 0)
return r;
if (*previous) { /* let's output the previous entry now, since now we know that there will be one more, and can draw the tree glyph properly */
printf(" %s %s%s\n",
*is_first ? "File:" : " ",
special_glyph(SPECIAL_GLYPH_TREE_BRANCH), *previous);
*is_first = false;
*previous = mfree(*previous);
}
/* Do not output this entry immediately, but store what should be printed in a state
* variable, because we only will know the tree glyph to print (branch or final edge) once we
* read one more entry */
if (r > 0)
r = asprintf(previous, "/%s/%s (%s%s%s)", path, de->d_name, ansi_highlight(), v, ansi_normal());
else
r = asprintf(previous, "/%s/%s", path, de->d_name);
if (r < 0)
return log_oom();
c++;
}
return c;
}
static int status_binaries(const char *esp_path, sd_id128_t partition) {
_cleanup_free_ char *last = NULL;
bool is_first = true;
int r, k;
printf("%sAvailable Boot Loaders on ESP:%s\n", ansi_underline(), ansi_normal());
if (!esp_path) {
printf(" ESP: Cannot find or access mount point of ESP.\n\n");
return -ENOENT;
}
printf(" ESP: %s", esp_path);
if (!sd_id128_is_null(partition))
printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition));
printf("\n");
r = enumerate_binaries(esp_path, "EFI/systemd", NULL, &last, &is_first);
if (r < 0) {
printf("\n");
return r;
}
k = enumerate_binaries(esp_path, "EFI/BOOT", "boot", &last, &is_first);
if (k < 0) {
printf("\n");
return k;
}
if (last) /* let's output the last entry now, since now we know that there will be no more, and can draw the tree glyph properly */
printf(" %s %s%s\n",
is_first ? "File:" : " ",
special_glyph(SPECIAL_GLYPH_TREE_RIGHT), last);
if (r == 0 && !arg_quiet)
log_info("systemd-boot not installed in ESP.");
if (k == 0 && !arg_quiet)
log_info("No default/fallback boot loader installed in ESP.");
printf("\n");
return 0;
}
static int print_efi_option(uint16_t id, int *n_printed, bool in_order) {
_cleanup_free_ char *title = NULL;
_cleanup_free_ char *path = NULL;
sd_id128_t partition;
bool active;
int r;
assert(n_printed);
r = efi_get_boot_option(id, &title, &partition, &path, &active);
if (r == -ENOENT) {
log_debug_errno(r, "Boot option 0x%04X referenced but missing, ignoring: %m", id);
return 0;
}
if (r < 0)
return log_error_errno(r, "Failed to read boot option 0x%04X: %m", id);
/* print only configured entries with partition information */
if (!path || sd_id128_is_null(partition)) {
log_debug("Ignoring boot entry 0x%04X without partition information.", id);
return 0;
}
efi_tilt_backslashes(path);
if (*n_printed == 0) /* Print section title before first entry */
printf("%sBoot Loaders Listed in EFI Variables:%s\n", ansi_underline(), ansi_normal());
printf(" Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal());
printf(" ID: 0x%04X\n", id);
printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : "");
printf(" Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
SD_ID128_FORMAT_VAL(partition));
printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path);
printf("\n");
(*n_printed)++;
return 1;
}
static int status_variables(void) {
_cleanup_free_ uint16_t *options = NULL, *order = NULL;
int n_options, n_order, n_printed = 0;
n_options = efi_get_boot_options(&options);
if (n_options == -ENOENT)
return log_error_errno(n_options,
"Failed to access EFI variables, efivarfs"
" needs to be available at /sys/firmware/efi/efivars/.");
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: %m");
/* print entries in BootOrder first */
for (int i = 0; i < n_order; i++)
(void) print_efi_option(order[i], &n_printed, /* in_order= */ true);
/* print remaining entries */
for (int i = 0; i < n_options; i++) {
for (int j = 0; j < n_order; j++)
if (options[i] == order[j])
goto next_option;
(void) print_efi_option(options[i], &n_printed, /* in_order= */ false);
next_option:
continue;
}
if (n_printed == 0)
printf("No boot loaders listed in EFI Variables.\n\n");
return 0;
}
static int boot_config_load_and_select(
BootConfig *config,
const char *esp_path,
dev_t esp_devid,
const char *xbootldr_path,
dev_t xbootldr_devid) {
int r;
/* If XBOOTLDR and ESP actually refer to the same block device, suppress XBOOTLDR, since it would
* find the same entries twice. */
bool same = esp_path && xbootldr_path && devnum_set_and_equal(esp_devid, xbootldr_devid);
r = boot_config_load(config, esp_path, same ? NULL : xbootldr_path);
if (r < 0)
return r;
if (!arg_root) {
_cleanup_strv_free_ char **efi_entries = NULL;
r = efi_loader_get_entries(&efi_entries);
if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
log_debug_errno(r, "Boot loader reported no entries.");
else if (r < 0)
log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m");
else
(void) boot_config_augment_from_loader(config, efi_entries, /* only_auto= */ false);
}
return boot_config_select_special_entries(config, /* skip_efivars= */ !!arg_root);
}
static int status_entries(
const BootConfig *config,
const char *esp_path,
sd_id128_t esp_partition_uuid,
const char *xbootldr_path,
sd_id128_t xbootldr_partition_uuid) {
sd_id128_t dollar_boot_partition_uuid;
const char *dollar_boot_path;
int r;
assert(config);
assert(esp_path || xbootldr_path);
if (xbootldr_path) {
dollar_boot_path = xbootldr_path;
dollar_boot_partition_uuid = xbootldr_partition_uuid;
} else {
dollar_boot_path = esp_path;
dollar_boot_partition_uuid = esp_partition_uuid;
}
printf("%sBoot Loader Entries:%s\n"
" $BOOT: %s", ansi_underline(), ansi_normal(), dollar_boot_path);
if (!sd_id128_is_null(dollar_boot_partition_uuid))
printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")",
SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid));
printf("\n\n");
if (config->default_entry < 0)
printf("%zu entries, no entry could be determined as default.\n", config->n_entries);
else {
printf("%sDefault Boot Loader Entry:%s\n", ansi_underline(), ansi_normal());
r = show_boot_entry(
boot_config_default_entry(config),
/* show_as_default= */ false,
/* show_as_selected= */ false,
/* show_discovered= */ false);
if (r > 0)
/* < 0 is already logged by the function itself, let's just emit an extra warning if
the default entry is broken */
printf("\nWARNING: default boot entry is broken\n");
}
return 0;
}
static int compare_product(const char *a, const char *b) {
size_t x, y;
@@ -1707,21 +1356,6 @@ static int parse_argv(int argc, char *argv[]) {
return 1;
}
static void read_efi_var(const char *variable, char **ret) {
int r;
r = efi_get_variable_string(variable, ret);
if (r < 0 && r != -ENOENT)
log_warning_errno(r, "Failed to read EFI variable %s: %m", variable);
}
static void print_yes_no_line(bool first, bool good, const char *name) {
printf("%s%s %s\n",
first ? " Features: " : " ",
COLOR_MARK_BOOL(good),
name);
}
static int are_we_installed(const char *esp_path) {
int r;
@@ -1751,239 +1385,6 @@ static int are_we_installed(const char *esp_path) {
return r == 0;
}
static int verb_status(int argc, char *argv[], void *userdata) {
sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL;
dev_t esp_devid = 0, xbootldr_devid = 0;
int r, k;
r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, &esp_uuid, &esp_devid);
if (arg_print_esp_path) {
if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only
* error the find_esp_and_warn() won't log on its own) */
return log_error_errno(r, "Failed to determine ESP location: %m");
if (r < 0)
return r;
puts(arg_esp_path);
}
r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, &xbootldr_uuid, &xbootldr_devid);
if (arg_print_dollar_boot_path) {
if (r == -EACCES)
return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
if (r < 0)
return r;
const char *path = arg_dollar_boot_path();
if (!path)
return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m");
puts(path);
}
if (arg_print_esp_path || arg_print_dollar_boot_path)
return 0;
r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just
* show what we can show */
pager_open(arg_pager_flags);
if (!arg_root && is_efi_boot()) {
static const struct {
uint64_t flag;
const char *name;
} loader_flags[] = {
{ EFI_LOADER_FEATURE_BOOT_COUNTING, "Boot counting" },
{ EFI_LOADER_FEATURE_CONFIG_TIMEOUT, "Menu timeout control" },
{ EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control" },
{ EFI_LOADER_FEATURE_ENTRY_DEFAULT, "Default entry control" },
{ EFI_LOADER_FEATURE_ENTRY_ONESHOT, "One-shot entry control" },
{ EFI_LOADER_FEATURE_XBOOTLDR, "Support for XBOOTLDR partition" },
{ EFI_LOADER_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" },
{ EFI_LOADER_FEATURE_LOAD_DRIVER, "Load drop-in drivers" },
{ EFI_LOADER_FEATURE_SORT_KEY, "Support Type #1 sort-key field" },
{ EFI_LOADER_FEATURE_SAVED_ENTRY, "Support @saved pseudo-entry" },
{ EFI_LOADER_FEATURE_DEVICETREE, "Support Type #1 devicetree field" },
};
static const struct {
uint64_t flag;
const char *name;
} stub_flags[] = {
{ EFI_STUB_FEATURE_REPORT_BOOT_PARTITION, "Stub sets ESP information" },
{ EFI_STUB_FEATURE_PICK_UP_CREDENTIALS, "Picks up credentials from boot partition" },
{ EFI_STUB_FEATURE_PICK_UP_SYSEXTS, "Picks up system extension images from boot partition" },
{ EFI_STUB_FEATURE_THREE_PCRS, "Measures kernel+command line+sysexts" },
{ EFI_STUB_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" },
};
_cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL;
sd_id128_t loader_part_uuid = SD_ID128_NULL;
uint64_t loader_features = 0, stub_features = 0;
Tpm2Support s;
int have;
read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareType), &fw_type);
read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareInfo), &fw_info);
read_efi_var(EFI_LOADER_VARIABLE(LoaderInfo), &loader);
read_efi_var(EFI_LOADER_VARIABLE(StubInfo), &stub);
read_efi_var(EFI_LOADER_VARIABLE(LoaderImageIdentifier), &loader_path);
(void) efi_loader_get_features(&loader_features);
(void) efi_stub_get_features(&stub_features);
if (loader_path)
efi_tilt_backslashes(loader_path);
k = efi_loader_get_device_part_uuid(&loader_part_uuid);
if (k < 0 && k != -ENOENT)
r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m");
SecureBootMode secure = efi_get_secure_boot_mode();
printf("%sSystem:%s\n", ansi_underline(), ansi_normal());
printf(" Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal());
printf(" Firmware Arch: %s\n", get_efi_arch());
printf(" Secure Boot: %sd (%s)\n",
enable_disable(IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED)),
secure_boot_mode_to_string(secure));
s = tpm2_support();
printf(" TPM2 Support: %s%s%s\n",
FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? ansi_highlight_green() :
(s & (TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER)) != 0 ? ansi_highlight_red() : ansi_highlight_yellow(),
FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? "yes" :
(s & TPM2_SUPPORT_FIRMWARE) ? "firmware only, driver unavailable" :
(s & TPM2_SUPPORT_DRIVER) ? "driver only, firmware unavailable" : "no",
ansi_normal());
k = efi_get_reboot_to_firmware();
if (k > 0)
printf(" Boot into FW: %sactive%s\n", ansi_highlight_yellow(), ansi_normal());
else if (k == 0)
printf(" Boot into FW: supported\n");
else if (k == -EOPNOTSUPP)
printf(" Boot into FW: not supported\n");
else {
errno = -k;
printf(" Boot into FW: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal());
}
printf("\n");
printf("%sCurrent Boot Loader:%s\n", ansi_underline(), ansi_normal());
printf(" Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal());
for (size_t i = 0; i < ELEMENTSOF(loader_flags); i++)
print_yes_no_line(i == 0, FLAGS_SET(loader_features, loader_flags[i].flag), loader_flags[i].name);
sd_id128_t bootloader_esp_uuid;
bool have_bootloader_esp_uuid = efi_loader_get_device_part_uuid(&bootloader_esp_uuid) >= 0;
print_yes_no_line(false, have_bootloader_esp_uuid, "Boot loader sets ESP information");
if (have_bootloader_esp_uuid && !sd_id128_is_null(esp_uuid) &&
!sd_id128_equal(esp_uuid, bootloader_esp_uuid))
printf("WARNING: The boot loader reports a different ESP UUID than detected ("SD_ID128_UUID_FORMAT_STR" vs. "SD_ID128_UUID_FORMAT_STR")!\n",
SD_ID128_FORMAT_VAL(bootloader_esp_uuid),
SD_ID128_FORMAT_VAL(esp_uuid));
if (stub) {
printf(" Stub: %s\n", stub);
for (size_t i = 0; i < ELEMENTSOF(stub_flags); i++)
print_yes_no_line(i == 0, FLAGS_SET(stub_features, stub_flags[i].flag), stub_flags[i].name);
}
if (!sd_id128_is_null(loader_part_uuid))
printf(" ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
SD_ID128_FORMAT_VAL(loader_part_uuid));
else
printf(" ESP: n/a\n");
printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path));
printf("\n");
printf("%sRandom Seed:%s\n", ansi_underline(), ansi_normal());
have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderSystemToken)), F_OK) >= 0;
printf(" System Token: %s\n", have ? "set" : "not set");
if (arg_esp_path) {
_cleanup_free_ char *p = NULL;
p = path_join(arg_esp_path, "/loader/random-seed");
if (!p)
return log_oom();
have = access(p, F_OK) >= 0;
printf(" Exists: %s\n", yes_no(have));
}
printf("\n");
} else
printf("%sSystem:%s\n"
"Not booted with EFI\n\n",
ansi_underline(), ansi_normal());
if (arg_esp_path) {
k = status_binaries(arg_esp_path, esp_uuid);
if (k < 0)
r = k;
}
if (!arg_root && is_efi_boot()) {
k = status_variables();
if (k < 0)
r = k;
}
if (arg_esp_path || arg_xbootldr_path) {
_cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
k = boot_config_load_and_select(&config,
arg_esp_path, esp_devid,
arg_xbootldr_path, xbootldr_devid);
if (k < 0)
r = k;
else {
k = status_entries(&config,
arg_esp_path, esp_uuid,
arg_xbootldr_path, xbootldr_uuid);
if (k < 0)
r = k;
}
}
return r;
}
static int verb_list(int argc, char *argv[], void *userdata) {
_cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
dev_t esp_devid = 0, xbootldr_devid = 0;
int r;
/* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two
* things: turn off logging about access errors and turn off potentially privileged device probing.
* Here we're interested in the latter but not the former, hence request the mode, and log about
* EACCES. */
r = acquire_esp(/* unprivileged_mode= */ geteuid() != 0, /* graceful= */ false, NULL, NULL, NULL, NULL, &esp_devid);
if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */
return log_error_errno(r, "Failed to determine ESP location: %m");
if (r < 0)
return r;
r = acquire_xbootldr(/* unprivileged_mode= */ geteuid() != 0, NULL, &xbootldr_devid);
if (r == -EACCES)
return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
if (r < 0)
return r;
r = boot_config_load_and_select(&config, arg_esp_path, esp_devid, arg_xbootldr_path, xbootldr_devid);
if (r < 0)
return r;
if (config.n_entries == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) {
log_info("No boot loader entries found.");
return 0;
}
pager_open(arg_pager_flags);
return show_boot_entries(&config, arg_json_format_flags);
}
static int verb_install(int argc, char *argv[], void *userdata) {
sd_id128_t uuid = SD_ID128_NULL;
uint64_t pstart = 0, psize = 0;
src/boot/bootctl.h
+8
View File
@@ -23,3 +23,11 @@ extern bool arg_arch_all;
extern char *arg_root;
extern char *arg_image;
extern char *arg_efi_boot_option_description;
static inline const char *arg_dollar_boot_path(void) {
/* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */
return arg_xbootldr_path ?: arg_esp_path;
}
int acquire_esp(bool unprivileged_mode, bool graceful, uint32_t *ret_part, uint64_t *ret_pstart, uint64_t *ret_psize, sd_id128_t *ret_uuid, dev_t *ret_devid);
int acquire_xbootldr(bool unprivileged_mode, sd_id128_t *ret_uuid, dev_t *ret_devid);