1852 lines
66 KiB
C
1852 lines
66 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <ctype.h>
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#include <errno.h>
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#include <ftw.h>
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#include <getopt.h>
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#include <limits.h>
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#include <linux/magic.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include "sd-id128.h"
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#include "alloc-util.h"
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#include "blkid-util.h"
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#include "bootspec.h"
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#include "copy.h"
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#include "dirent-util.h"
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#include "efi-loader.h"
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#include "efivars.h"
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#include "env-util.h"
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#include "escape.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "fs-util.h"
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#include "locale-util.h"
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#include "main-func.h"
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#include "mkdir.h"
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#include "pager.h"
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#include "parse-util.h"
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#include "pretty-print.h"
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#include "random-util.h"
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#include "rm-rf.h"
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#include "stat-util.h"
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#include "stdio-util.h"
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#include "string-util.h"
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#include "strv.h"
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#include "terminal-util.h"
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#include "tmpfile-util.h"
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#include "umask-util.h"
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#include "utf8.h"
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#include "util.h"
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#include "verbs.h"
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#include "virt.h"
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static char *arg_esp_path = NULL;
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static char *arg_xbootldr_path = NULL;
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static bool arg_print_esp_path = false;
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static bool arg_print_dollar_boot_path = false;
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static bool arg_touch_variables = true;
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static PagerFlags arg_pager_flags = 0;
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static bool arg_graceful = false;
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STATIC_DESTRUCTOR_REGISTER(arg_esp_path, freep);
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STATIC_DESTRUCTOR_REGISTER(arg_xbootldr_path, freep);
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static const char *arg_dollar_boot_path(void) {
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/* $BOOT shall be the XBOOTLDR partition if it exists, and otherwise the ESP */
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return arg_xbootldr_path ?: arg_esp_path;
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}
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static int acquire_esp(
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bool unprivileged_mode,
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uint32_t *ret_part,
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uint64_t *ret_pstart,
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uint64_t *ret_psize,
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sd_id128_t *ret_uuid) {
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char *np;
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int r;
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/* Find the ESP, and log about errors. Note that find_esp_and_warn() will log in all error cases on
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* its own, except for ENOKEY (which is good, we want to show our own message in that case,
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* suggesting use of --esp-path=) and EACCESS (only when we request unprivileged mode; in this case
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* we simply eat up the error here, so that --list and --status work too, without noise about
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* this). */
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r = find_esp_and_warn(arg_esp_path, unprivileged_mode, &np, ret_part, ret_pstart, ret_psize, ret_uuid);
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if (r == -ENOKEY)
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return log_error_errno(r,
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"Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.\n"
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"Alternatively, use --esp-path= to specify path to mount point.");
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if (r < 0)
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return r;
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free_and_replace(arg_esp_path, np);
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log_debug("Using EFI System Partition at %s.", arg_esp_path);
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return 1;
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}
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static int acquire_xbootldr(bool unprivileged_mode, sd_id128_t *ret_uuid) {
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char *np;
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int r;
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r = find_xbootldr_and_warn(arg_xbootldr_path, unprivileged_mode, &np, ret_uuid);
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if (r == -ENOKEY) {
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log_debug_errno(r, "Didn't find an XBOOTLDR partition, using the ESP as $BOOT.");
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if (ret_uuid)
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*ret_uuid = SD_ID128_NULL;
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arg_xbootldr_path = mfree(arg_xbootldr_path);
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return 0;
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}
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if (r < 0)
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return r;
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free_and_replace(arg_xbootldr_path, np);
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log_debug("Using XBOOTLDR partition at %s as $BOOT.", arg_xbootldr_path);
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return 1;
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}
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/* search for "#### LoaderInfo: systemd-boot 218 ####" string inside the binary */
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static int get_file_version(int fd, char **v) {
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struct stat st;
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char *buf;
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const char *s, *e;
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char *x = NULL;
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int r;
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assert(fd >= 0);
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assert(v);
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if (fstat(fd, &st) < 0)
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return log_error_errno(errno, "Failed to stat EFI binary: %m");
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r = stat_verify_regular(&st);
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if (r < 0)
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return log_error_errno(r, "EFI binary is not a regular file: %m");
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if (st.st_size < 27) {
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*v = NULL;
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return 0;
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}
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buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
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if (buf == MAP_FAILED)
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return log_error_errno(errno, "Failed to memory map EFI binary: %m");
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s = memmem(buf, st.st_size - 8, "#### LoaderInfo: ", 17);
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if (!s)
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goto finish;
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s += 17;
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e = memmem(s, st.st_size - (s - buf), " ####", 5);
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if (!e || e - s < 3) {
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r = log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Malformed version string.");
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goto finish;
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}
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x = strndup(s, e - s);
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if (!x) {
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r = log_oom();
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goto finish;
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}
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r = 1;
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finish:
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(void) munmap(buf, st.st_size);
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*v = x;
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return r;
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}
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static int enumerate_binaries(const char *esp_path, const char *path, const char *prefix) {
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_cleanup_closedir_ DIR *d = NULL;
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struct dirent *de;
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const char *p;
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int c = 0, r;
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assert(esp_path);
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assert(path);
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p = prefix_roota(esp_path, path);
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d = opendir(p);
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if (!d) {
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if (errno == ENOENT)
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return 0;
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return log_error_errno(errno, "Failed to read \"%s\": %m", p);
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}
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FOREACH_DIRENT(de, d, break) {
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_cleanup_free_ char *v = NULL;
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_cleanup_close_ int fd = -1;
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if (!endswith_no_case(de->d_name, ".efi"))
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continue;
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if (prefix && !startswith_no_case(de->d_name, prefix))
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continue;
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fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC);
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if (fd < 0)
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return log_error_errno(errno, "Failed to open \"%s/%s\" for reading: %m", p, de->d_name);
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r = get_file_version(fd, &v);
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if (r < 0)
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return r;
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if (r > 0)
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printf(" File: %s/%s/%s (%s%s%s)\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name, ansi_highlight(), v, ansi_normal());
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else
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printf(" File: %s/%s/%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path, de->d_name);
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c++;
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}
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return c;
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}
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static int status_binaries(const char *esp_path, sd_id128_t partition) {
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int r;
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printf("Available Boot Loaders on ESP:\n");
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if (!esp_path) {
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printf(" ESP: Cannot find or access mount point of ESP.\n\n");
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return -ENOENT;
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}
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printf(" ESP: %s", esp_path);
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if (!sd_id128_is_null(partition))
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printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition));
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printf("\n");
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r = enumerate_binaries(esp_path, "EFI/systemd", NULL);
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if (r < 0)
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goto finish;
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if (r == 0)
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log_info("systemd-boot not installed in ESP.");
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r = enumerate_binaries(esp_path, "EFI/BOOT", "boot");
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if (r < 0)
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goto finish;
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if (r == 0)
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log_info("No default/fallback boot loader installed in ESP.");
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r = 0;
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finish:
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printf("\n");
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return r;
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}
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static int print_efi_option(uint16_t id, bool in_order) {
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_cleanup_free_ char *title = NULL;
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_cleanup_free_ char *path = NULL;
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sd_id128_t partition;
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bool active;
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int r;
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r = efi_get_boot_option(id, &title, &partition, &path, &active);
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if (r < 0)
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return r;
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/* print only configured entries with partition information */
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if (!path || sd_id128_is_null(partition))
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return 0;
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efi_tilt_backslashes(path);
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printf(" Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal());
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printf(" ID: 0x%04X\n", id);
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printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : "");
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printf(" Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n",
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SD_ID128_FORMAT_VAL(partition));
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printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path);
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printf("\n");
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return 0;
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}
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static int status_variables(void) {
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_cleanup_free_ uint16_t *options = NULL, *order = NULL;
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int n_options, n_order, i;
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n_options = efi_get_boot_options(&options);
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if (n_options == -ENOENT)
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return log_error_errno(n_options,
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"Failed to access EFI variables, efivarfs"
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" needs to be available at /sys/firmware/efi/efivars/.");
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if (n_options < 0)
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return log_error_errno(n_options, "Failed to read EFI boot entries: %m");
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n_order = efi_get_boot_order(&order);
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if (n_order == -ENOENT)
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n_order = 0;
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else if (n_order < 0)
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return log_error_errno(n_order, "Failed to read EFI boot order: %m");
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/* print entries in BootOrder first */
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printf("Boot Loaders Listed in EFI Variables:\n");
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for (i = 0; i < n_order; i++)
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print_efi_option(order[i], true);
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/* print remaining entries */
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for (i = 0; i < n_options; i++) {
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int j;
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for (j = 0; j < n_order; j++)
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if (options[i] == order[j])
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goto next_option;
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print_efi_option(options[i], false);
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next_option:
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continue;
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}
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return 0;
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}
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static int boot_entry_file_check(const char *root, const char *p) {
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_cleanup_free_ char *path;
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path = path_join(root, p);
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if (!path)
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return log_oom();
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if (access(path, F_OK) < 0)
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return -errno;
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return 0;
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}
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static void boot_entry_file_list(const char *field, const char *root, const char *p, int *ret_status) {
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int status = boot_entry_file_check(root, p);
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printf("%13s%s ", strempty(field), field ? ":" : " ");
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if (status < 0) {
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errno = -status;
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printf("%s%s%s (%m)\n", ansi_highlight_red(), p, ansi_normal());
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} else
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printf("%s\n", p);
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if (*ret_status == 0 && status < 0)
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*ret_status = status;
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}
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static int boot_entry_show(const BootEntry *e, bool show_as_default) {
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int status = 0;
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/* Returns 0 on success, negative on processing error, and positive if something is wrong with the
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boot entry itself. */
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assert(e);
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printf(" title: %s%s%s" "%s%s%s\n",
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ansi_highlight(), boot_entry_title(e), ansi_normal(),
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ansi_highlight_green(), show_as_default ? " (default)" : "", ansi_normal());
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if (e->id)
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printf(" id: %s\n", e->id);
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if (e->path) {
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_cleanup_free_ char *link = NULL;
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/* Let's urlify the link to make it easy to view in an editor, but only if it is a text
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* file. Unified images are binary ELFs, and EFI variables are not pure text either. */
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if (e->type == BOOT_ENTRY_CONF)
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(void) terminal_urlify_path(e->path, NULL, &link);
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printf(" source: %s\n", link ?: e->path);
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}
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if (e->version)
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printf(" version: %s\n", e->version);
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if (e->machine_id)
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printf(" machine-id: %s\n", e->machine_id);
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if (e->architecture)
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printf(" architecture: %s\n", e->architecture);
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if (e->kernel)
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boot_entry_file_list("linux", e->root, e->kernel, &status);
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char **s;
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STRV_FOREACH(s, e->initrd)
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boot_entry_file_list(s == e->initrd ? "initrd" : NULL,
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e->root,
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*s,
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&status);
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if (!strv_isempty(e->options)) {
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_cleanup_free_ char *t = NULL, *t2 = NULL;
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_cleanup_strv_free_ char **ts = NULL;
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t = strv_join(e->options, " ");
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if (!t)
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return log_oom();
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ts = strv_split_newlines(t);
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if (!ts)
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return log_oom();
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t2 = strv_join(ts, "\n ");
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if (!t2)
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return log_oom();
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printf(" options: %s\n", t2);
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}
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if (e->device_tree)
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boot_entry_file_list("devicetree", e->root, e->device_tree, &status);
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return -status;
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}
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static int status_entries(
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const char *esp_path,
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sd_id128_t esp_partition_uuid,
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const char *xbootldr_path,
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sd_id128_t xbootldr_partition_uuid) {
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_cleanup_(boot_config_free) BootConfig config = {};
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sd_id128_t dollar_boot_partition_uuid;
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const char *dollar_boot_path;
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int r;
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assert(esp_path || xbootldr_path);
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if (xbootldr_path) {
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dollar_boot_path = xbootldr_path;
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dollar_boot_partition_uuid = xbootldr_partition_uuid;
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} else {
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dollar_boot_path = esp_path;
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dollar_boot_partition_uuid = esp_partition_uuid;
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}
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printf("Boot Loader Entries:\n"
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" $BOOT: %s", dollar_boot_path);
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if (!sd_id128_is_null(dollar_boot_partition_uuid))
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printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")",
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SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid));
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printf("\n\n");
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r = boot_entries_load_config(esp_path, xbootldr_path, &config);
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if (r < 0)
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return r;
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if (config.default_entry < 0)
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printf("%zu entries, no entry could be determined as default.\n", config.n_entries);
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else {
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printf("Default Boot Loader Entry:\n");
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r = boot_entry_show(config.entries + config.default_entry, false);
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if (r > 0)
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/* < 0 is already logged by the function itself, let's just emit an extra warning if
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the default entry is broken */
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printf("\nWARNING: default boot entry is broken\n");
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}
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return 0;
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}
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static int compare_product(const char *a, const char *b) {
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size_t x, y;
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assert(a);
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assert(b);
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x = strcspn(a, " ");
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y = strcspn(b, " ");
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if (x != y)
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return x < y ? -1 : x > y ? 1 : 0;
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return strncmp(a, b, x);
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}
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|
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static int compare_version(const char *a, const char *b) {
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assert(a);
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assert(b);
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a += strcspn(a, " ");
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a += strspn(a, " ");
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b += strcspn(b, " ");
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b += strspn(b, " ");
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return strverscmp(a, b);
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}
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|
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static int version_check(int fd_from, const char *from, int fd_to, const char *to) {
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_cleanup_free_ char *a = NULL, *b = NULL;
|
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int r;
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|
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assert(fd_from >= 0);
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assert(from);
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assert(fd_to >= 0);
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assert(to);
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r = get_file_version(fd_from, &a);
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if (r < 0)
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return r;
|
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if (r == 0)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
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"Source file \"%s\" does not carry version information!",
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from);
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|
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r = get_file_version(fd_to, &b);
|
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if (r < 0)
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return r;
|
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if (r == 0 || compare_product(a, b) != 0)
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return log_notice_errno(SYNTHETIC_ERRNO(EEXIST),
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"Skipping \"%s\", since it's owned by another boot loader.",
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to);
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|
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if (compare_version(a, b) < 0)
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return log_warning_errno(SYNTHETIC_ERRNO(ESTALE), "Skipping \"%s\", since a newer boot loader version exists already.", to);
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|
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return 0;
|
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}
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|
|
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, 0);
|
|
|
|
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) {
|
|
_cleanup_free_ char *p = NULL;
|
|
|
|
p = path_join(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 *const esp_subdirs[] = {
|
|
/* The directories to place in the ESP */
|
|
"EFI",
|
|
"EFI/systemd",
|
|
"EFI/BOOT",
|
|
"loader",
|
|
NULL
|
|
};
|
|
|
|
static const char *const dollar_boot_subdirs[] = {
|
|
/* The directories to place in the XBOOTLDR partition or the ESP, depending what exists */
|
|
"loader",
|
|
"loader/entries", /* Type #1 entries */
|
|
"EFI",
|
|
"EFI/Linux", /* Type #2 entries */
|
|
NULL
|
|
};
|
|
|
|
static int create_subdirs(const char *root, const char * const *subdirs) {
|
|
const char *const *i;
|
|
int r;
|
|
|
|
STRV_FOREACH(i, subdirs) {
|
|
r = mkdir_one(root, *i);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int copy_one_file(const char *esp_path, const char *name, bool force) {
|
|
const char *e;
|
|
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);
|
|
|
|
e = startswith(name, "systemd-boot");
|
|
if (e) {
|
|
int k;
|
|
char *v;
|
|
|
|
/* Create the EFI default boot loader name (specified for removable devices) */
|
|
v = strjoina(esp_path, "/EFI/BOOT/BOOT", e);
|
|
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;
|
|
|
|
d = opendir(BOOTLIBDIR);
|
|
if (!d)
|
|
return log_error_errno(errno, "Failed to open \""BOOTLIBDIR"\": %m");
|
|
|
|
FOREACH_DIRENT(de, d, return log_error_errno(errno, "Failed to read \""BOOTLIBDIR"\": %m")) {
|
|
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, 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 = reallocarray(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) {
|
|
const char *p;
|
|
uint16_t slot;
|
|
int r;
|
|
|
|
if (!is_efi_boot()) {
|
|
log_warning("Not booted with EFI, skipping EFI variable setup.");
|
|
return 0;
|
|
}
|
|
|
|
p = prefix_roota(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) {
|
|
_cleanup_closedir_ DIR *d = NULL;
|
|
struct dirent *de;
|
|
const char *p;
|
|
int r, c = 0;
|
|
|
|
p = prefix_roota(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) {
|
|
const char *p;
|
|
|
|
p = prefix_roota(prefix, suffix);
|
|
if (rmdir(p) < 0) {
|
|
bool ignore = IN_SET(errno, ENOENT, ENOTEMPTY);
|
|
|
|
log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, errno,
|
|
"Failed to remove directory \"%s\": %m", p);
|
|
if (!ignore)
|
|
return -errno;
|
|
} else
|
|
log_info("Removed \"%s\".", p);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int remove_subdirs(const char *root, const char *const *subdirs) {
|
|
int r, q;
|
|
|
|
/* We use recursion here to destroy the directories in reverse order. Which should be safe given how
|
|
* short the array is. */
|
|
|
|
if (!subdirs[0]) /* A the end of the list */
|
|
return 0;
|
|
|
|
r = remove_subdirs(root, subdirs + 1);
|
|
q = rmdir_one(root, subdirs[0]);
|
|
|
|
return r < 0 ? r : q;
|
|
}
|
|
|
|
static int remove_binaries(const char *esp_path) {
|
|
const char *p;
|
|
int r, q;
|
|
|
|
p = prefix_roota(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;
|
|
|
|
return r;
|
|
}
|
|
|
|
static int remove_file(const char *root, const char *file) {
|
|
const char *p;
|
|
|
|
assert(root);
|
|
assert(file);
|
|
|
|
p = prefix_roota(root, file);
|
|
if (unlink(p) < 0) {
|
|
log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno,
|
|
"Failed to unlink file \"%s\": %m", p);
|
|
|
|
return errno == ENOENT ? 0 : -errno;
|
|
}
|
|
|
|
log_info("Removed \"%s\".", p);
|
|
return 1;
|
|
}
|
|
|
|
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 remove_loader_variables(void) {
|
|
const char *p;
|
|
int r = 0;
|
|
|
|
/* Remove all persistent loader variables we define */
|
|
|
|
FOREACH_STRING(p,
|
|
"LoaderConfigTimeout",
|
|
"LoaderConfigTimeoutOneShot",
|
|
"LoaderEntryDefault",
|
|
"LoaderEntryOneShot",
|
|
"LoaderSystemToken") {
|
|
|
|
int q;
|
|
|
|
q = efi_set_variable(EFI_VENDOR_LOADER, p, NULL, 0);
|
|
if (q == -ENOENT)
|
|
continue;
|
|
if (q < 0) {
|
|
log_warning_errno(q, "Failed to remove %s variable: %m", p);
|
|
if (r >= 0)
|
|
r = q;
|
|
} else
|
|
log_info("Removed EFI variable %s.", p);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int install_loader_config(const char *esp_path) {
|
|
_cleanup_(unlink_and_freep) char *t = NULL;
|
|
_cleanup_fclose_ FILE *f = NULL;
|
|
_cleanup_close_ int fd = -1;
|
|
const char *p;
|
|
int r;
|
|
|
|
p = prefix_roota(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 = take_fdopen(&fd, "w");
|
|
if (!f)
|
|
return log_oom();
|
|
|
|
fprintf(f, "#timeout 3\n"
|
|
"#console-mode keep\n");
|
|
|
|
r = fflush_sync_and_check(f);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to write \"%s\": %m", p);
|
|
|
|
r = link_tmpfile(fileno(f), 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) {
|
|
_cleanup_free_ char *link = NULL;
|
|
int r;
|
|
|
|
r = terminal_urlify_man("bootctl", "1", &link);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
printf("%1$s [OPTIONS...] COMMAND ...\n"
|
|
"\n%5$sControl EFI firmware boot settings and manage boot loader.%6$s\n"
|
|
"\n%3$sGeneric EFI Firmware/Boot Loader Commands:%4$s\n"
|
|
" status Show status of installed boot loader and EFI variables\n"
|
|
" reboot-to-firmware [BOOL]\n"
|
|
" Query or set reboot-to-firmware EFI flag\n"
|
|
" systemd-efi-options [STRING]\n"
|
|
" Query or set system options string in EFI variable\n"
|
|
"\n%3$sBoot Loader Specification Commands:%4$s\n"
|
|
" list List boot loader entries\n"
|
|
" set-default ID Set default boot loader entry\n"
|
|
" set-oneshot ID Set default boot loader entry, for next boot only\n"
|
|
"\n%3$ssystemd-boot Commands:%4$s\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"
|
|
" is-installed Test whether systemd-boot is installed in the ESP\n"
|
|
" random-seed Initialize random seed in ESP and EFI variables\n"
|
|
"\n%3$sOptions:%4$s\n"
|
|
" -h --help Show this help\n"
|
|
" --version Print version\n"
|
|
" --esp-path=PATH Path to the EFI System Partition (ESP)\n"
|
|
" --boot-path=PATH Path to the $BOOT partition\n"
|
|
" -p --print-esp-path Print path to the EFI System Partition\n"
|
|
" -x --print-boot-path Print path to the $BOOT partition\n"
|
|
" --no-variables Don't touch EFI variables\n"
|
|
" --no-pager Do not pipe output into a pager\n"
|
|
" --graceful Don't fail when the ESP cannot be found or EFI\n"
|
|
" variables cannot be written\n"
|
|
"\nSee the %2$s for details.\n"
|
|
, program_invocation_short_name
|
|
, link
|
|
, ansi_underline(), ansi_normal()
|
|
, ansi_highlight(), ansi_normal()
|
|
);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_argv(int argc, char *argv[]) {
|
|
enum {
|
|
ARG_ESP_PATH = 0x100,
|
|
ARG_BOOT_PATH,
|
|
ARG_VERSION,
|
|
ARG_NO_VARIABLES,
|
|
ARG_NO_PAGER,
|
|
ARG_GRACEFUL,
|
|
};
|
|
|
|
static const struct option options[] = {
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "version", no_argument, NULL, ARG_VERSION },
|
|
{ "esp-path", required_argument, NULL, ARG_ESP_PATH },
|
|
{ "path", required_argument, NULL, ARG_ESP_PATH }, /* Compatibility alias */
|
|
{ "boot-path", required_argument, NULL, ARG_BOOT_PATH },
|
|
{ "print-esp-path", no_argument, NULL, 'p' },
|
|
{ "print-path", no_argument, NULL, 'p' }, /* Compatibility alias */
|
|
{ "print-boot-path", no_argument, NULL, 'x' },
|
|
{ "no-variables", no_argument, NULL, ARG_NO_VARIABLES },
|
|
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
|
|
{ "graceful", no_argument, NULL, ARG_GRACEFUL },
|
|
{}
|
|
};
|
|
|
|
int c, r;
|
|
|
|
assert(argc >= 0);
|
|
assert(argv);
|
|
|
|
while ((c = getopt_long(argc, argv, "hpx", options, NULL)) >= 0)
|
|
switch (c) {
|
|
|
|
case 'h':
|
|
help(0, NULL, NULL);
|
|
return 0;
|
|
|
|
case ARG_VERSION:
|
|
return version();
|
|
|
|
case ARG_ESP_PATH:
|
|
r = free_and_strdup(&arg_esp_path, optarg);
|
|
if (r < 0)
|
|
return log_oom();
|
|
break;
|
|
|
|
case ARG_BOOT_PATH:
|
|
r = free_and_strdup(&arg_xbootldr_path, optarg);
|
|
if (r < 0)
|
|
return log_oom();
|
|
break;
|
|
|
|
case 'p':
|
|
if (arg_print_dollar_boot_path)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"--print-boot-path/-x cannot be combined with --print-esp-path/-p");
|
|
arg_print_esp_path = true;
|
|
break;
|
|
|
|
case 'x':
|
|
if (arg_print_esp_path)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"--print-boot-path/-x cannot be combined with --print-esp-path/-p");
|
|
arg_print_dollar_boot_path = true;
|
|
break;
|
|
|
|
case ARG_NO_VARIABLES:
|
|
arg_touch_variables = false;
|
|
break;
|
|
|
|
case ARG_NO_PAGER:
|
|
arg_pager_flags |= PAGER_DISABLE;
|
|
break;
|
|
|
|
case ARG_GRACEFUL:
|
|
arg_graceful = true;
|
|
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 void print_yes_no_line(bool first, bool good, const char *name) {
|
|
printf("%s%s%s%s %s\n",
|
|
first ? " Features: " : " ",
|
|
good ? ansi_highlight_green() : ansi_highlight_red(),
|
|
good ? special_glyph(SPECIAL_GLYPH_CHECK_MARK) : special_glyph(SPECIAL_GLYPH_CROSS_MARK),
|
|
ansi_normal(),
|
|
name);
|
|
}
|
|
|
|
static int verb_status(int argc, char *argv[], void *userdata) {
|
|
sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL;
|
|
int r, k;
|
|
|
|
r = acquire_esp(geteuid() != 0, NULL, NULL, NULL, &esp_uuid);
|
|
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(geteuid() != 0, &xbootldr_uuid);
|
|
if (arg_print_dollar_boot_path) {
|
|
if (r == -EACCES)
|
|
return log_error_errno(r, "Failed to determine XBOOTLDR location: %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 */
|
|
|
|
(void) pager_open(arg_pager_flags);
|
|
|
|
if (is_efi_boot()) {
|
|
static const struct {
|
|
uint64_t flag;
|
|
const char *name;
|
|
} 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" },
|
|
};
|
|
|
|
_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;
|
|
size_t i;
|
|
|
|
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);
|
|
(void) efi_loader_get_features(&loader_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");
|
|
|
|
printf("System:\n");
|
|
printf(" Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal());
|
|
printf(" Secure Boot: %sd\n", enable_disable(is_efi_secure_boot()));
|
|
printf(" Setup Mode: %s\n", is_efi_secure_boot_setup_mode() ? "setup" : "user");
|
|
|
|
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("Current Boot Loader:\n");
|
|
printf(" Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal());
|
|
|
|
for (i = 0; i < ELEMENTSOF(flags); i++)
|
|
print_yes_no_line(i == 0, FLAGS_SET(loader_features, flags[i].flag), 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 partition information");
|
|
if (have_bootloader_esp_uuid && !sd_id128_equal(esp_uuid, bootloader_esp_uuid))
|
|
printf("WARNING: The boot loader reports a different ESP UUID than detected!\n");
|
|
|
|
if (stub)
|
|
printf(" Stub: %s\n", stub);
|
|
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("Random Seed:\n");
|
|
printf(" Passed to OS: %s\n", yes_no(access("/sys/firmware/efi/efivars/LoaderRandomSeed-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f", F_OK) >= 0));
|
|
printf(" System Token: %s\n", access("/sys/firmware/efi/efivars/LoaderSystemToken-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f", F_OK) >= 0 ? "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();
|
|
|
|
printf(" Exists: %s\n", yes_no(access(p, F_OK) >= 0));
|
|
}
|
|
|
|
printf("\n");
|
|
} else
|
|
printf("System:\n Not booted with EFI\n\n");
|
|
|
|
if (arg_esp_path) {
|
|
k = status_binaries(arg_esp_path, esp_uuid);
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (is_efi_boot()) {
|
|
k = status_variables();
|
|
if (k < 0)
|
|
r = k;
|
|
}
|
|
|
|
if (arg_esp_path || arg_xbootldr_path) {
|
|
k = status_entries(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 = {};
|
|
_cleanup_strv_free_ char **efi_entries = NULL;
|
|
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, NULL);
|
|
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 = acquire_xbootldr(geteuid() != 0, NULL);
|
|
if (r == -EACCES)
|
|
return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = boot_entries_load_config(arg_esp_path, arg_xbootldr_path, &config);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
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_entries_augment_from_loader(&config, efi_entries, false);
|
|
|
|
if (config.n_entries == 0)
|
|
log_info("No boot loader entries found.");
|
|
else {
|
|
size_t n;
|
|
|
|
(void) pager_open(arg_pager_flags);
|
|
|
|
printf("Boot Loader Entries:\n");
|
|
|
|
for (n = 0; n < config.n_entries; n++) {
|
|
r = boot_entry_show(config.entries + n, n == (size_t) config.default_entry);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (n+1 < config.n_entries)
|
|
putchar('\n');
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int install_random_seed(const char *esp) {
|
|
_cleanup_(unlink_and_freep) char *tmp = NULL;
|
|
_cleanup_free_ void *buffer = NULL;
|
|
_cleanup_free_ char *path = NULL;
|
|
_cleanup_close_ int fd = -1;
|
|
size_t sz, token_size;
|
|
ssize_t n;
|
|
int r;
|
|
|
|
assert(esp);
|
|
|
|
path = path_join(esp, "/loader/random-seed");
|
|
if (!path)
|
|
return log_oom();
|
|
|
|
sz = random_pool_size();
|
|
|
|
buffer = malloc(sz);
|
|
if (!buffer)
|
|
return log_oom();
|
|
|
|
r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to acquire random seed: %m");
|
|
|
|
/* Normally create_subdirs() should already have created everything we need, but in case "bootctl
|
|
* random-seed" is called we want to just create the minimum we need for it, and not the full
|
|
* list. */
|
|
r = mkdir_parents(path, 0755);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to create parent directory for %s: %m", path);
|
|
|
|
r = tempfn_random(path, "bootctl", &tmp);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
fd = open(tmp, O_CREAT|O_EXCL|O_NOFOLLOW|O_NOCTTY|O_WRONLY|O_CLOEXEC, 0600);
|
|
if (fd < 0) {
|
|
tmp = mfree(tmp);
|
|
return log_error_errno(fd, "Failed to open random seed file for writing: %m");
|
|
}
|
|
|
|
n = write(fd, buffer, sz);
|
|
if (n < 0)
|
|
return log_error_errno(errno, "Failed to write random seed file: %m");
|
|
if ((size_t) n != sz)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short write while writing random seed file.");
|
|
|
|
if (rename(tmp, path) < 0)
|
|
return log_error_errno(r, "Failed to move random seed file into place: %m");
|
|
|
|
tmp = mfree(tmp);
|
|
|
|
log_info("Random seed file %s successfully written (%zu bytes).", path, sz);
|
|
|
|
if (!arg_touch_variables)
|
|
return 0;
|
|
|
|
if (!is_efi_boot()) {
|
|
log_notice("Not booted with EFI, skipping EFI variable setup.");
|
|
return 0;
|
|
}
|
|
|
|
r = getenv_bool("SYSTEMD_WRITE_SYSTEM_TOKEN");
|
|
if (r < 0) {
|
|
if (r != -ENXIO)
|
|
log_warning_errno(r, "Failed to parse $SYSTEMD_WRITE_SYSTEM_TOKEN, ignoring.");
|
|
|
|
if (detect_vm() > 0) {
|
|
/* Let's not write a system token if we detect we are running in a VM
|
|
* environment. Why? Our default security model for the random seed uses the system
|
|
* token as a mechanism to ensure we are not vulnerable to golden master sloppiness
|
|
* issues, i.e. that people initialize the random seed file, then copy the image to
|
|
* many systems and end up with the same random seed in each that is assumed to be
|
|
* valid but in reality is the same for all machines. By storing a system token in
|
|
* the EFI variable space we can make sure that even though the random seeds on disk
|
|
* are all the same they will be different on each system under the assumption that
|
|
* the EFI variable space is maintained separate from the random seed storage. That
|
|
* is generally the case on physical systems, as the ESP is stored on persistent
|
|
* storage, and the EFI variables in NVRAM. However in virtualized environments this
|
|
* is generally not true: the EFI variable set is typically stored along with the
|
|
* disk image itself. For example, using the OVMF EFI firmware the EFI variables are
|
|
* stored in a file in the ESP itself. */
|
|
|
|
log_notice("Not installing system token, since we are running in a virtualized environment.");
|
|
return 0;
|
|
}
|
|
} else if (r == 0) {
|
|
log_notice("Not writing system token, because $SYSTEMD_WRITE_SYSTEM_TOKEN is set to false.");
|
|
return 0;
|
|
}
|
|
|
|
r = efi_get_variable(EFI_VENDOR_LOADER, "LoaderSystemToken", NULL, NULL, &token_size);
|
|
if (r == -ENODATA)
|
|
log_debug_errno(r, "LoaderSystemToken EFI variable is invalid (too short?), replacing.");
|
|
else if (r < 0) {
|
|
if (r != -ENOENT)
|
|
return log_error_errno(r, "Failed to test system token validity: %m");
|
|
} else {
|
|
if (token_size >= sz) {
|
|
/* Let's avoid writes if we can, and initialize this only once. */
|
|
log_debug("System token already written, not updating.");
|
|
return 0;
|
|
}
|
|
|
|
log_debug("Existing system token size (%zu) does not match our expectations (%zu), replacing.", token_size, sz);
|
|
}
|
|
|
|
r = genuine_random_bytes(buffer, sz, RANDOM_BLOCK);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to acquire random seed: %m");
|
|
|
|
/* Let's write this variable with an umask in effect, so that unprivileged users can't see the token
|
|
* and possibly get identification information or too much insight into the kernel's entropy pool
|
|
* state. */
|
|
RUN_WITH_UMASK(0077) {
|
|
r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderSystemToken", buffer, sz);
|
|
if (r < 0) {
|
|
if (!arg_graceful)
|
|
return log_error_errno(r, "Failed to write 'LoaderSystemToken' EFI variable: %m");
|
|
|
|
if (r == -EINVAL)
|
|
log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable (firmware problem?), ignoring: %m");
|
|
else
|
|
log_warning_errno(r, "Unable to write 'LoaderSystemToken' EFI variable, ignoring: %m");
|
|
} else
|
|
log_info("Successfully initialized system token in EFI variable with %zu bytes.", sz);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sync_everything(void) {
|
|
int ret = 0, k;
|
|
|
|
if (arg_esp_path) {
|
|
k = syncfs_path(AT_FDCWD, arg_esp_path);
|
|
if (k < 0)
|
|
ret = log_error_errno(k, "Failed to synchronize the ESP '%s': %m", arg_esp_path);
|
|
}
|
|
|
|
if (arg_xbootldr_path) {
|
|
k = syncfs_path(AT_FDCWD, arg_xbootldr_path);
|
|
if (k < 0)
|
|
ret = log_error_errno(k, "Failed to synchronize $BOOT '%s': %m", arg_xbootldr_path);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
|
|
r = acquire_xbootldr(false, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
install = streq(argv[0], "install");
|
|
|
|
RUN_WITH_UMASK(0002) {
|
|
if (install) {
|
|
/* 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_subdirs(arg_esp_path, esp_subdirs);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = create_subdirs(arg_dollar_boot_path(), dollar_boot_subdirs);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = install_binaries(arg_esp_path, install);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (install) {
|
|
r = install_loader_config(arg_esp_path);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = install_random_seed(arg_esp_path);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
|
|
(void) sync_everything();
|
|
|
|
if (arg_touch_variables)
|
|
r = install_variables(arg_esp_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, q;
|
|
|
|
r = acquire_esp(false, NULL, NULL, NULL, &uuid);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_xbootldr(false, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = remove_binaries(arg_esp_path);
|
|
|
|
q = remove_file(arg_esp_path, "/loader/loader.conf");
|
|
if (q < 0 && r >= 0)
|
|
r = q;
|
|
|
|
q = remove_file(arg_esp_path, "/loader/random-seed");
|
|
if (q < 0 && r >= 0)
|
|
r = q;
|
|
|
|
q = remove_subdirs(arg_esp_path, esp_subdirs);
|
|
if (q < 0 && r >= 0)
|
|
r = q;
|
|
|
|
q = remove_subdirs(arg_esp_path, dollar_boot_subdirs);
|
|
if (q < 0 && r >= 0)
|
|
r = q;
|
|
|
|
if (arg_xbootldr_path) {
|
|
/* Remove the latter two also in the XBOOTLDR partition if it exists */
|
|
q = remove_subdirs(arg_xbootldr_path, dollar_boot_subdirs);
|
|
if (q < 0 && r >= 0)
|
|
r = q;
|
|
}
|
|
|
|
(void) sync_everything();
|
|
|
|
if (!arg_touch_variables)
|
|
return r;
|
|
|
|
q = remove_variables(uuid, "/EFI/systemd/systemd-boot" EFI_MACHINE_TYPE_NAME ".efi", true);
|
|
if (q < 0 && r >= 0)
|
|
r = q;
|
|
|
|
q = remove_loader_variables();
|
|
if (q < 0 && r >= 0)
|
|
r = q;
|
|
|
|
return r;
|
|
}
|
|
|
|
static int verb_is_installed(int argc, char *argv[], void *userdata) {
|
|
_cleanup_free_ char *p = NULL;
|
|
int r;
|
|
|
|
r = acquire_esp(false, NULL, NULL, NULL, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
/* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could
|
|
* check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the
|
|
* loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which
|
|
* should be a suitable and very minimal check for a number of reasons:
|
|
*
|
|
* → The check is architecture independent (i.e. we check if any systemd-boot loader is installed, not a
|
|
* specific one.)
|
|
*
|
|
* → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main
|
|
* /EFI/BOOT/BOOT*.EFI fallback binary.
|
|
*
|
|
* → It specifically checks for systemd-boot, not for other boot loaders (which a check for
|
|
* /boot/loader/entries would do). */
|
|
|
|
p = path_join(arg_esp_path, "/EFI/systemd/");
|
|
if (!p)
|
|
return log_oom();
|
|
|
|
r = dir_is_empty(p);
|
|
if (r > 0 || r == -ENOENT) {
|
|
puts("no");
|
|
return EXIT_FAILURE;
|
|
}
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to detect whether systemd-boot is installed: %m");
|
|
|
|
puts("yes");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
static int parse_loader_entry_target_arg(const char *arg1, char16_t **ret_target, size_t *ret_target_size) {
|
|
int r;
|
|
if (streq(arg1, "@current")) {
|
|
r = efi_get_variable(EFI_VENDOR_LOADER, "LoaderEntrySelected", NULL, (void *) ret_target, ret_target_size);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get EFI variable 'LoaderEntrySelected': %m");
|
|
} else if (streq(arg1, "@oneshot")) {
|
|
r = efi_get_variable(EFI_VENDOR_LOADER, "LoaderEntryOneShot", NULL, (void *) ret_target, ret_target_size);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryOneShot': %m");
|
|
} else if (streq(arg1, "@default")) {
|
|
r = efi_get_variable(EFI_VENDOR_LOADER, "LoaderEntryDefault", NULL, (void *) ret_target, ret_target_size);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryDefault': %m");
|
|
} else {
|
|
char16_t *encoded = NULL;
|
|
encoded = utf8_to_utf16(arg1, strlen(arg1));
|
|
if (!encoded)
|
|
return log_oom();
|
|
*ret_target = encoded;
|
|
*ret_target_size = char16_strlen(encoded) * 2 + 2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int verb_set_default(int argc, char *argv[], void *userdata) {
|
|
const char *name;
|
|
int r;
|
|
|
|
if (!is_efi_boot())
|
|
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
|
|
"Not booted with UEFI.");
|
|
|
|
if (access("/sys/firmware/efi/efivars/LoaderInfo-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f", F_OK) < 0) {
|
|
if (errno == ENOENT) {
|
|
log_error_errno(errno, "Not booted with a supported boot loader.");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
return log_error_errno(errno, "Failed to detect whether boot loader supports '%s' operation: %m", argv[0]);
|
|
}
|
|
|
|
if (detect_container() > 0)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
|
|
"'%s' operation not supported in a container.",
|
|
argv[0]);
|
|
|
|
if (!arg_touch_variables)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"'%s' operation cannot be combined with --touch-variables=no.",
|
|
argv[0]);
|
|
|
|
name = streq(argv[0], "set-default") ? "LoaderEntryDefault" : "LoaderEntryOneShot";
|
|
|
|
if (isempty(argv[1])) {
|
|
r = efi_set_variable(EFI_VENDOR_LOADER, name, NULL, 0);
|
|
if (r < 0 && r != -ENOENT)
|
|
return log_error_errno(r, "Failed to remove EFI variable '%s': %m", name);
|
|
} else {
|
|
_cleanup_free_ char16_t *target = NULL;
|
|
size_t target_size = 0;
|
|
|
|
r = parse_loader_entry_target_arg(argv[1], &target, &target_size);
|
|
if (r < 0)
|
|
return r;
|
|
r = efi_set_variable(EFI_VENDOR_LOADER, name, target, target_size);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to update EFI variable '%s': %m", name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int verb_random_seed(int argc, char *argv[], void *userdata) {
|
|
int r;
|
|
|
|
r = find_esp_and_warn(arg_esp_path, false, &arg_esp_path, NULL, NULL, NULL, NULL);
|
|
if (r == -ENOKEY) {
|
|
/* find_esp_and_warn() doesn't warn about ENOKEY, so let's do that on our own */
|
|
if (!arg_graceful)
|
|
return log_error_errno(r, "Unable to find ESP.");
|
|
|
|
log_notice("No ESP found, not initializing random seed.");
|
|
return 0;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = install_random_seed(arg_esp_path);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
(void) sync_everything();
|
|
return 0;
|
|
}
|
|
|
|
static int verb_systemd_efi_options(int argc, char *argv[], void *userdata) {
|
|
int r;
|
|
|
|
if (argc == 1) {
|
|
_cleanup_free_ char *line = NULL;
|
|
|
|
r = systemd_efi_options_variable(&line);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to query SystemdOptions EFI variable: %m");
|
|
|
|
puts(line);
|
|
|
|
} else {
|
|
r = efi_set_variable_string(EFI_VENDOR_SYSTEMD, "SystemdOptions", argv[1]);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to set SystemdOptions EFI variable: %m");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int verb_reboot_to_firmware(int argc, char *argv[], void *userdata) {
|
|
int r;
|
|
|
|
if (argc < 2) {
|
|
r = efi_get_reboot_to_firmware();
|
|
if (r > 0) {
|
|
puts("active");
|
|
return EXIT_SUCCESS; /* success */
|
|
}
|
|
if (r == 0) {
|
|
puts("supported");
|
|
return 1; /* recognizable error #1 */
|
|
}
|
|
if (r == -EOPNOTSUPP) {
|
|
puts("not supported");
|
|
return 2; /* recognizable error #2 */
|
|
}
|
|
|
|
log_error_errno(r, "Failed to query reboot-to-firmware state: %m");
|
|
return 3; /* other kind of error */
|
|
} else {
|
|
r = parse_boolean(argv[1]);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse argument: %s", argv[1]);
|
|
|
|
r = efi_set_reboot_to_firmware(r);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to set reboot-to-firmware option: %m");
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
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 },
|
|
{ "install", VERB_ANY, 1, 0, verb_install },
|
|
{ "update", VERB_ANY, 1, 0, verb_install },
|
|
{ "remove", VERB_ANY, 1, 0, verb_remove },
|
|
{ "is-installed", VERB_ANY, 1, 0, verb_is_installed },
|
|
{ "list", VERB_ANY, 1, 0, verb_list },
|
|
{ "set-default", 2, 2, 0, verb_set_default },
|
|
{ "set-oneshot", 2, 2, 0, verb_set_default },
|
|
{ "random-seed", VERB_ANY, 1, 0, verb_random_seed },
|
|
{ "systemd-efi-options", VERB_ANY, 2, 0, verb_systemd_efi_options },
|
|
{ "reboot-to-firmware", VERB_ANY, 2, 0, verb_reboot_to_firmware },
|
|
{}
|
|
};
|
|
|
|
return dispatch_verb(argc, argv, verbs, NULL);
|
|
}
|
|
|
|
static int run(int argc, char *argv[]) {
|
|
int r;
|
|
|
|
log_parse_environment();
|
|
log_open();
|
|
|
|
/* If we run in a container, automatically turn off EFI file system access */
|
|
if (detect_container() > 0)
|
|
arg_touch_variables = false;
|
|
|
|
r = parse_argv(argc, argv);
|
|
if (r <= 0)
|
|
return r;
|
|
|
|
return bootctl_main(argc, argv);
|
|
}
|
|
|
|
DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);
|