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Systemd/src/boot/bootctl.c

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/* SPDX-License-Identifier: LGPL-2.1+ */
#include <blkid.h>
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <ftw.h>
#include <getopt.h>
#include <limits.h>
#include <linux/magic.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#include <unistd.h>
#include "sd-id128.h"
#include "alloc-util.h"
#include "blkid-util.h"
#include "bootspec.h"
#include "copy.h"
#include "dirent-util.h"
#include "efivars.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "locale-util.h"
#include "parse-util.h"
#include "rm-rf.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "umask-util.h"
#include "util.h"
#include "verbs.h"
#include "virt.h"
static char *arg_path = NULL;
static bool arg_print_path = false;
static bool arg_touch_variables = true;
static int acquire_esp(
bool unprivileged_mode,
uint32_t *ret_part,
uint64_t *ret_pstart,
uint64_t *ret_psize,
sd_id128_t *ret_uuid) {
char *np;
int r;
/* Find the ESP, and log about errors. Note that find_esp_and_warn() will log in all error cases on its own,
* except for ENOKEY (which is good, we want to show our own message in that case, suggesting use of --path=)
* and EACCESS (only when we request unprivileged mode; in this case we simply eat up the error here, so that
* --list and --status work too, without noise about this). */
r = find_esp_and_warn(arg_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid);
if (r == -ENOKEY)
return log_error_errno(r,
"Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n"
"Alternatively, use --path= to specify path to mount point.");
if (r < 0)
return r;
free_and_replace(arg_path, np);
log_debug("Using EFI System Partition at %s.", arg_path);
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 = 0;
assert(fd >= 0);
assert(v);
if (fstat(fd, &st) < 0)
return log_error_errno(errno, "Failed to stat EFI binary: %m");
if (st.st_size < 27) {
*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 = memmem(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
if (!s)
goto finish;
s += 17;
e = memmem(s, st.st_size - (s - buf), " ####", 5);
if (!e || e - s < 3) {
log_error("Malformed version string.");
r = -EINVAL;
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 int enumerate_binaries(const char *esp_path, const char *path, const char *prefix) {
char *p;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r = 0, c = 0;
p = strjoina(esp_path, "/", path);
d = opendir(p);
if (!d) {
if (errno == ENOENT)
return 0;
return log_error_errno(errno, "Failed to read \"%s\": %m", p);
}
FOREACH_DIRENT(de, d, break) {
_cleanup_close_ int fd = -1;
_cleanup_free_ char *v = NULL;
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 (r > 0)
printf(" File: %s/%s/%s (%s)\n", special_glyph(TREE_RIGHT), path, de->d_name, v);
else
printf(" File: %s/%s/%s\n", special_glyph(TREE_RIGHT), path, de->d_name);
c++;
}
return c;
}
static int status_binaries(const char *esp_path, sd_id128_t partition) {
int r;
printf("Boot Loader Binaries:\n");
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/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x)", SD_ID128_FORMAT_VAL(partition));
printf("\n");
r = enumerate_binaries(esp_path, "EFI/systemd", NULL);
if (r == 0)
log_error("systemd-boot not installed in ESP.");
else if (r < 0)
return r;
r = enumerate_binaries(esp_path, "EFI/BOOT", "boot");
if (r == 0)
log_error("No default/fallback boot loader installed in ESP.");
else if (r < 0)
return r;
printf("\n");
return 0;
}
static int print_efi_option(uint16_t id, bool in_order) {
_cleanup_free_ char *title = NULL;
_cleanup_free_ char *path = NULL;
sd_id128_t partition;
bool active;
int r = 0;
r = efi_get_boot_option(id, &title, &partition, &path, &active);
if (r < 0)
return r;
/* print only configured entries with partition information */
if (!path || sd_id128_is_null(partition))
return 0;
efi_tilt_backslashes(path);
printf(" Title: %s\n", strna(title));
printf(" ID: 0x%04X\n", id);
printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : "");
printf(" Partition: /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", SD_ID128_FORMAT_VAL(partition));
printf(" File: %s%s\n", special_glyph(TREE_RIGHT), path);
printf("\n");
return 0;
}
static int status_variables(void) {
int n_options, n_order;
_cleanup_free_ uint16_t *options = NULL, *order = NULL;
int i;
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.");
/* 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_option;
print_efi_option(options[i], false);
next_option:
continue;
}
return 0;
}
static int status_entries(const char *esp_path, sd_id128_t partition) {
int r;
_cleanup_(boot_config_free) BootConfig config = {};
printf("Default Boot Entry:\n");
r = boot_entries_load_config(esp_path, &config);
if (r < 0)
return log_error_errno(r, "Failed to load bootspec config from \"%s/loader\": %m",
esp_path);
if (config.default_entry < 0)
printf("%zu entries, no entry suitable as default\n", config.n_entries);
else {
const BootEntry *e = &config.entries[config.default_entry];
printf(" title: %s\n", boot_entry_title(e));
if (e->version)
printf(" version: %s\n", e->version);
if (e->kernel)
printf(" linux: %s\n", e->kernel);
if (!strv_isempty(e->initrd)) {
_cleanup_free_ char *t;
t = strv_join(e->initrd, " ");
if (!t)
return log_oom();
printf(" initrd: %s\n", t);
}
if (!strv_isempty(e->options)) {
_cleanup_free_ char *t;
t = strv_join(e->options, " ");
if (!t)
return log_oom();
printf(" options: %s\n", t);
}
if (e->device_tree)
printf(" devicetree: %s\n", e->device_tree);
puts("");
}
return 0;
}
static int compare_product(const char *a, const char *b) {
size_t x, y;
assert(a);
assert(b);
x = strcspn(a, " ");
y = strcspn(b, " ");
if (x != y)
return x < y ? -1 : x > y ? 1 : 0;
return strncmp(a, b, x);
}
static int compare_version(const char *a, const char *b) {
assert(a);
assert(b);
a += strcspn(a, " ");
a += strspn(a, " ");
b += strcspn(b, " ");
b += strspn(b, " ");
return strverscmp(a, b);
}
static int version_check(int fd_from, const char *from, int fd_to, const char *to) {
_cleanup_free_ char *a = NULL, *b = NULL;
int r;
assert(fd_from >= 0);
assert(from);
assert(fd_to >= 0);
assert(to);
r = get_file_version(fd_from, &a);
if (r < 0)
return r;
if (r == 0) {
log_error("Source file \"%s\" does not carry version information!", from);
return -EINVAL;
}
r = get_file_version(fd_to, &b);
if (r < 0)
return r;
if (r == 0 || compare_product(a, b) != 0) {
log_notice("Skipping \"%s\", since it's owned by another boot loader.", to);
return -EEXIST;
}
if (compare_version(a, b) < 0) {
log_warning("Skipping \"%s\", since a newer boot loader version exists already.", to);
return -ESTALE;
}
return 0;
}
static int copy_file_with_version_check(const char *from, const char *to, bool force) {
_cleanup_close_ int fd_from = -1, fd_to = -1;
_cleanup_free_ char *t = NULL;
int r;
fd_from = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY);
if (fd_from < 0)
return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", from);
if (!force) {
fd_to = open(to, O_RDONLY|O_CLOEXEC|O_NOCTTY);
if (fd_to < 0) {
if (errno != -ENOENT)
return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", to);
} else {
r = version_check(fd_from, from, fd_to, to);
if (r < 0)
return r;
if (lseek(fd_from, 0, SEEK_SET) == (off_t) -1)
return log_error_errno(errno, "Failed to seek in \"%s\": %m", from);
fd_to = safe_close(fd_to);
}
}
r = tempfn_random(to, NULL, &t);
if (r < 0)
return log_oom();
RUN_WITH_UMASK(0000) {
fd_to = open(t, O_WRONLY|O_CREAT|O_CLOEXEC|O_EXCL|O_NOFOLLOW, 0644);
if (fd_to < 0)
return log_error_errno(errno, "Failed to open \"%s\" for writing: %m", t);
}
r = copy_bytes(fd_from, fd_to, (uint64_t) -1, COPY_REFLINK);
if (r < 0) {
(void) unlink(t);
return log_error_errno(r, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
}
(void) copy_times(fd_from, fd_to);
if (fsync(fd_to) < 0) {
(void) unlink_noerrno(t);
return log_error_errno(errno, "Failed to copy data from \"%s\" to \"%s\": %m", from, t);
}
(void) fsync_directory_of_file(fd_to);
if (renameat(AT_FDCWD, t, AT_FDCWD, to) < 0) {
(void) unlink_noerrno(t);
return log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", t, to);
}
log_info("Copied \"%s\" to \"%s\".", from, to);
return 0;
}
static int mkdir_one(const char *prefix, const char *suffix) {
char *p;
p = strjoina(prefix, "/", suffix);
if (mkdir(p, 0700) < 0) {
if (errno != EEXIST)
return log_error_errno(errno, "Failed to create \"%s\": %m", p);
} else
log_info("Created \"%s\".", p);
return 0;
}
static const char *efi_subdirs[] = {
"EFI",
"EFI/systemd",
"EFI/BOOT",
"loader",
"loader/entries",
NULL
};
static int create_dirs(const char *esp_path) {
const char **i;
int r;
STRV_FOREACH(i, efi_subdirs) {
r = mkdir_one(esp_path, *i);
if (r < 0)
return r;
}
return 0;
}
static int copy_one_file(const char *esp_path, const char *name, bool force) {
char *p, *q;
int r;
p = strjoina(BOOTLIBDIR "/", name);
q = strjoina(esp_path, "/EFI/systemd/", name);
r = copy_file_with_version_check(p, q, force);
if (startswith(name, "systemd-boot")) {
int k;
char *v;
/* Create the EFI default boot loader name (specified for removable devices) */
v = strjoina(esp_path, "/EFI/BOOT/BOOT",
name + STRLEN("systemd-boot"));
ascii_strupper(strrchr(v, '/') + 1);
k = copy_file_with_version_check(p, v, force);
if (k < 0 && r == 0)
r = k;
}
return r;
}
static int install_binaries(const char *esp_path, bool force) {
struct dirent *de;
_cleanup_closedir_ DIR *d = NULL;
int r = 0;
if (force) {
/* Don't create any of these directories when we are
* just updating. When we update we'll drop-in our
* files (unless there are newer ones already), but we
* won't create the directories for them in the first
* place. */
r = create_dirs(esp_path);
if (r < 0)
return r;
}
d = opendir(BOOTLIBDIR);
if (!d)
return log_error_errno(errno, "Failed to open \""BOOTLIBDIR"\": %m");
FOREACH_DIRENT(de, d, break) {
int k;
if (!endswith_no_case(de->d_name, ".efi"))
continue;
k = copy_one_file(esp_path, de->d_name, force);
if (k < 0 && r == 0)
r = k;
}
return r;
}
static bool same_entry(uint16_t id, const sd_id128_t uuid, const char *path) {
_cleanup_free_ char *opath = NULL;
sd_id128_t ouuid;
int r;
r = efi_get_boot_option(id, NULL, &ouuid, &opath, NULL);
if (r < 0)
return false;
if (!sd_id128_equal(uuid, ouuid))
return false;
if (!streq_ptr(path, opath))
return false;
return true;
}
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 insert_into_order(uint16_t slot, bool first) {
_cleanup_free_ uint16_t *order = NULL;
uint16_t *t;
int n, i;
n = efi_get_boot_order(&order);
if (n <= 0)
/* no entry, add us */
return efi_set_boot_order(&slot, 1);
/* are we the first and only one? */
if (n == 1 && order[0] == slot)
return 0;
/* are we already in the boot order? */
for (i = 0; i < n; i++) {
if (order[i] != slot)
continue;
/* we do not require to be the first one, all is fine */
if (!first)
return 0;
/* move us to the first slot */
memmove(order + 1, order, i * sizeof(uint16_t));
order[0] = slot;
return efi_set_boot_order(order, n);
}
/* extend array */
t = realloc(order, (n + 1) * sizeof(uint16_t));
if (!t)
return -ENOMEM;
order = t;
/* add us to the top or end of the list */
if (first) {
memmove(order + 1, order, n * sizeof(uint16_t));
order[0] = slot;
} else
order[n] = slot;
return efi_set_boot_order(order, n + 1);
}
static int remove_from_order(uint16_t slot) {
_cleanup_free_ uint16_t *order = NULL;
int n, i;
n = efi_get_boot_order(&order);
if (n <= 0)
return n;
for (i = 0; i < n; i++) {
if (order[i] != slot)
continue;
if (i + 1 < n)
memmove(order + i, order + i+1, (n - i) * sizeof(uint16_t));
return efi_set_boot_order(order, n - 1);
}
return 0;
}
static int install_variables(const char *esp_path,
uint32_t part, uint64_t pstart, uint64_t psize,
sd_id128_t uuid, const char *path,
bool first) {
char *p;
uint16_t slot;
int r;
if (!is_efi_boot()) {
log_warning("Not booted with EFI, skipping EFI variable setup.");
return 0;
}
p = strjoina(esp_path, path);
if (access(p, F_OK) < 0) {
if (errno == ENOENT)
return 0;
return log_error_errno(errno, "Cannot access \"%s\": %m", p);
}
r = find_slot(uuid, path, &slot);
if (r < 0)
return log_error_errno(r,
r == -ENOENT ?
"Failed to access EFI variables. Is the \"efivarfs\" filesystem mounted?" :
"Failed to determine current boot order: %m");
if (first || r == 0) {
r = efi_add_boot_option(slot, "Linux Boot Manager",
part, pstart, psize,
uuid, path);
if (r < 0)
return log_error_errno(r, "Failed to create EFI Boot variable entry: %m");
log_info("Created EFI boot entry \"Linux Boot Manager\".");
}
return insert_into_order(slot, first);
}
static int remove_boot_efi(const char *esp_path) {
char *p;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
int r, c = 0;
p = strjoina(esp_path, "/EFI/BOOT");
d = opendir(p);
if (!d) {
if (errno == ENOENT)
return 0;
return log_error_errno(errno, "Failed to open directory \"%s\": %m", p);
}
FOREACH_DIRENT(de, d, break) {
_cleanup_close_ int fd = -1;
_cleanup_free_ char *v = NULL;
if (!endswith_no_case(de->d_name, ".efi"))
continue;
if (!startswith_no_case(de->d_name, "boot"))
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 (r > 0 && startswith(v, "systemd-boot ")) {
r = unlinkat(dirfd(d), de->d_name, 0);
if (r < 0)
return log_error_errno(errno, "Failed to remove \"%s/%s\": %m", p, de->d_name);
log_info("Removed \"%s/%s\".", p, de->d_name);
}
c++;
}
return c;
}
static int rmdir_one(const char *prefix, const char *suffix) {
char *p;
p = strjoina(prefix, "/", suffix);
if (rmdir(p) < 0) {
if (!IN_SET(errno, ENOENT, ENOTEMPTY))
return log_error_errno(errno, "Failed to remove \"%s\": %m", p);
} else
log_info("Removed \"%s\".", p);
return 0;
}
static int remove_binaries(const char *esp_path) {
char *p;
int r, q;
unsigned i;
p = strjoina(esp_path, "/EFI/systemd");
r = rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL);
q = remove_boot_efi(esp_path);
if (q < 0 && r == 0)
r = q;
for (i = ELEMENTSOF(efi_subdirs)-1; i > 0; i--) {
q = rmdir_one(esp_path, efi_subdirs[i-1]);
if (q < 0 && r == 0)
r = q;
}
return r;
}
static int remove_variables(sd_id128_t uuid, const char *path, bool in_order) {
uint16_t slot;
int r;
if (!is_efi_boot())
return 0;
r = find_slot(uuid, path, &slot);
if (r != 1)
return 0;
r = efi_remove_boot_option(slot);
if (r < 0)
return r;
if (in_order)
return remove_from_order(slot);
return 0;
}
static int install_loader_config(const char *esp_path) {
char machine_string[SD_ID128_STRING_MAX];
_cleanup_(unlink_and_freep) char *t = NULL;
_cleanup_fclose_ FILE *f = NULL;
sd_id128_t machine_id;
const char *p;
int r, fd;
r = sd_id128_get_machine(&machine_id);
if (r < 0)
return log_error_errno(r, "Failed to get machine id: %m");
p = strjoina(esp_path, "/loader/loader.conf");
if (access(p, F_OK) >= 0) /* Silently skip creation if the file already exists (early check) */
return 0;
fd = open_tmpfile_linkable(p, O_WRONLY|O_CLOEXEC, &t);
if (fd < 0)
return log_error_errno(fd, "Failed to open \"%s\" for writing: %m", p);
f = fdopen(fd, "we");
if (!f) {
safe_close(fd);
return log_oom();
}
fprintf(f, "#timeout 3\n");
fprintf(f, "#console-mode keep\n");
fprintf(f, "default %s-*\n", sd_id128_to_string(machine_id, machine_string));
r = fflush_sync_and_check(f);
if (r < 0)
return log_error_errno(r, "Failed to write \"%s\": %m", p);
r = link_tmpfile(fd, t, p);
if (r == -EEXIST)
return 0; /* Silently skip creation if the file exists now (recheck) */
if (r < 0)
return log_error_errno(r, "Failed to move \"%s\" into place: %m", p);
t = mfree(t);
return 1;
}
static int help(int argc, char *argv[], void *userdata) {
printf("%s [COMMAND] [OPTIONS...]\n"
"\n"
"Install, update or remove the systemd-boot EFI boot manager.\n\n"
" -h --help Show this help\n"
" --version Print version\n"
" --path=PATH Path to the EFI System Partition (ESP)\n"
" -p --print-path Print path to the EFI partition\n"
" --no-variables Don't touch EFI variables\n"
"\n"
"Commands:\n"
" status Show status of installed systemd-boot and EFI variables\n"
" list List boot entries\n"
" install Install systemd-boot to the ESP and EFI variables\n"
" update Update systemd-boot in the ESP and EFI variables\n"
" remove Remove systemd-boot from the ESP and EFI variables\n",
program_invocation_short_name);
return 0;
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_PATH = 0x100,
ARG_VERSION,
ARG_NO_VARIABLES,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "path", required_argument, NULL, ARG_PATH },
{ "print-path", no_argument, NULL, 'p' },
{ "no-variables", no_argument, NULL, ARG_NO_VARIABLES },
{ NULL, 0, NULL, 0 }
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hp", options, NULL)) >= 0)
switch (c) {
case 'h':
help(0, NULL, NULL);
return 0;
case ARG_VERSION:
return version();
case ARG_PATH:
r = free_and_strdup(&arg_path, optarg);
if (r < 0)
return log_oom();
break;
case 'p':
arg_print_path = true;
break;
case ARG_NO_VARIABLES:
arg_touch_variables = false;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unknown option");
}
return 1;
}
static void read_loader_efi_var(const char *name, char **var) {
int r;
r = efi_get_variable_string(EFI_VENDOR_LOADER, name, var);
if (r < 0 && r != -ENOENT)
log_warning_errno(r, "Failed to read EFI variable %s: %m", name);
}
static int verb_status(int argc, char *argv[], void *userdata) {
sd_id128_t uuid = SD_ID128_NULL;
int r, k;
r = acquire_esp(geteuid() != 0, NULL, NULL, NULL, &uuid);
if (arg_print_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: %m");
if (r < 0)
return r;
puts(arg_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 */
if (is_efi_boot()) {
_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;
read_loader_efi_var("LoaderFirmwareType", &fw_type);
read_loader_efi_var("LoaderFirmwareInfo", &fw_info);
read_loader_efi_var("LoaderInfo", &loader);
read_loader_efi_var("StubInfo", &stub);
read_loader_efi_var("LoaderImageIdentifier", &loader_path);
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");
printf("System:\n");
printf(" Firmware: %s (%s)\n", strna(fw_type), strna(fw_info));
k = is_efi_secure_boot();
if (k < 0)
r = log_warning_errno(k, "Failed to query secure boot status: %m");
else
printf(" Secure Boot: %sd\n", enable_disable(k));
k = is_efi_secure_boot_setup_mode();
if (k < 0)
r = log_warning_errno(k, "Failed to query secure boot mode: %m");
else
printf(" Setup Mode: %s\n", k ? "setup" : "user");
printf("\n");
printf("Current Loader:\n");
printf(" Product: %s\n", strna(loader));
if (stub)
printf(" Stub: %s\n", stub);
if (!sd_id128_is_null(loader_part_uuid))
printf(" ESP: /dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
SD_ID128_FORMAT_VAL(loader_part_uuid));
else
printf(" ESP: n/a\n");
printf(" File: %s%s\n", special_glyph(TREE_RIGHT), strna(loader_path));
printf("\n");
} else
printf("System:\n Not booted with EFI\n\n");
if (arg_path) {
k = status_binaries(arg_path, uuid);
if (k < 0)
r = k;
}
if (is_efi_boot()) {
k = status_variables();
if (k < 0)
r = k;
}
if (arg_path) {
k = status_entries(arg_path, uuid);
if (k < 0)
r = k;
}
return r;
}
static int verb_list(int argc, char *argv[], void *userdata) {
_cleanup_(boot_config_free) BootConfig config = {};
sd_id128_t uuid = SD_ID128_NULL;
unsigned n;
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(geteuid() != 0, NULL, NULL, NULL, &uuid);
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: %m");
if (r < 0)
return r;
r = boot_entries_load_config(arg_path, &config);
if (r < 0)
return log_error_errno(r, "Failed to load bootspec config from \"%s/loader\": %m",
arg_path);
printf("Available boot entries:\n");
for (n = 0; n < config.n_entries; n++) {
const BootEntry *e = &config.entries[n];
printf(" title: %s%s%s%s%s%s\n",
ansi_highlight(),
boot_entry_title(e),
ansi_normal(),
ansi_highlight_green(),
n == (unsigned) config.default_entry ? " (default)" : "",
ansi_normal());
if (e->version)
printf(" version: %s\n", e->version);
if (e->machine_id)
printf(" machine-id: %s\n", e->machine_id);
if (e->architecture)
printf(" architecture: %s\n", e->architecture);
if (e->kernel)
printf(" linux: %s\n", e->kernel);
if (!strv_isempty(e->initrd)) {
_cleanup_free_ char *t;
t = strv_join(e->initrd, " ");
if (!t)
return log_oom();
printf(" initrd: %s\n", t);
}
if (!strv_isempty(e->options)) {
_cleanup_free_ char *t;
t = strv_join(e->options, " ");
if (!t)
return log_oom();
printf(" options: %s\n", t);
}
if (e->device_tree)
printf(" devicetree: %s\n", e->device_tree);
puts("");
}
return 0;
}
static int verb_install(int argc, char *argv[], void *userdata) {
sd_id128_t uuid = SD_ID128_NULL;
uint64_t pstart = 0, psize = 0;
uint32_t part = 0;
bool install;
int r;
r = acquire_esp(false, &part, &pstart, &psize, &uuid);
if (r < 0)
return r;
install = streq(argv[0], "install");
RUN_WITH_UMASK(0002) {
r = install_binaries(arg_path, install);
if (r < 0)
return r;
if (install) {
r = install_loader_config(arg_path);
if (r < 0)
return r;
}
}
if (arg_touch_variables)
r = install_variables(arg_path,
part, pstart, psize, uuid,
"/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi",
install);
return r;
}
static int verb_remove(int argc, char *argv[], void *userdata) {
sd_id128_t uuid = SD_ID128_NULL;
int r;
r = acquire_esp(false, NULL, NULL, NULL, &uuid);
if (r < 0)
return r;
r = remove_binaries(arg_path);
if (arg_touch_variables) {
int q;
q = remove_variables(uuid, "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", true);
if (q < 0 && r == 0)
r = q;
}
return r;
}
static int bootctl_main(int argc, char *argv[]) {
static const Verb verbs[] = {
{ "help", VERB_ANY, VERB_ANY, 0, help },
{ "status", VERB_ANY, 1, VERB_DEFAULT, verb_status },
{ "list", VERB_ANY, 1, 0, verb_list },
{ "install", VERB_ANY, 1, VERB_MUST_BE_ROOT, verb_install },
{ "update", VERB_ANY, 1, VERB_MUST_BE_ROOT, verb_install },
{ "remove", VERB_ANY, 1, VERB_MUST_BE_ROOT, verb_remove },
{}
};
return dispatch_verb(argc, argv, verbs, NULL);
}
int main(int argc, char *argv[]) {
int r;
log_parse_environment();
log_open();
/* If we run in a container, automatically turn of EFI file system access */
if (detect_container() > 0)
arg_touch_variables = false;
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
r = bootctl_main(argc, argv);
finish:
free(arg_path);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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