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Diffstat (limited to 'src/grp-boot/bootctl/bootctl.c')
-rw-r--r--src/grp-boot/bootctl/bootctl.c1230
1 files changed, 1230 insertions, 0 deletions
diff --git a/src/grp-boot/bootctl/bootctl.c b/src/grp-boot/bootctl/bootctl.c
new file mode 100644
index 0000000000..ed1c7ef791
--- /dev/null
+++ b/src/grp-boot/bootctl/bootctl.c
@@ -0,0 +1,1230 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013-2015 Kay Sievers
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <blkid/blkid.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <ftw.h>
+#include <getopt.h>
+#include <limits.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 <linux/magic.h>
+
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/dirent-util.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/fileio.h"
+#include "systemd-basic/locale-util.h"
+#include "systemd-basic/parse-util.h"
+#include "systemd-basic/rm-rf.h"
+#include "systemd-basic/stat-util.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/strv.h"
+#include "systemd-basic/umask-util.h"
+#include "systemd-basic/util.h"
+#include "systemd-basic/verbs.h"
+#include "systemd-basic/virt.h"
+#include "systemd-blkid/blkid-util.h"
+#include "systemd-shared/efivars.h"
+
+static char *arg_path = NULL;
+static bool arg_touch_variables = true;
+
+static int verify_esp(
+ bool searching,
+ const char *p,
+ uint32_t *ret_part,
+ uint64_t *ret_pstart,
+ uint64_t *ret_psize,
+ sd_id128_t *ret_uuid) {
+
+ _cleanup_blkid_free_probe_ blkid_probe b = NULL;
+ _cleanup_free_ char *t = NULL;
+ uint64_t pstart = 0, psize = 0;
+ struct stat st, st2;
+ const char *v, *t2;
+ struct statfs sfs;
+ sd_id128_t uuid = SD_ID128_NULL;
+ uint32_t part = 0;
+ int r;
+
+ assert(p);
+
+ if (statfs(p, &sfs) < 0) {
+
+ /* If we are searching for the mount point, don't generate a log message if we can't find the path */
+ if (errno == ENOENT && searching)
+ return -ENOENT;
+
+ return log_error_errno(errno, "Failed to check file system type of \"%s\": %m", p);
+ }
+
+ if (!F_TYPE_EQUAL(sfs.f_type, MSDOS_SUPER_MAGIC)) {
+
+ if (searching)
+ return -EADDRNOTAVAIL;
+
+ log_error("File system \"%s\" is not a FAT EFI System Partition (ESP) file system.", p);
+ return -ENODEV;
+ }
+
+ if (stat(p, &st) < 0)
+ return log_error_errno(errno, "Failed to determine block device node of \"%s\": %m", p);
+
+ if (major(st.st_dev) == 0) {
+ log_error("Block device node of %p is invalid.", p);
+ return -ENODEV;
+ }
+
+ t2 = strjoina(p, "/..");
+ r = stat(t2, &st2);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to determine block device node of parent of \"%s\": %m", p);
+
+ if (st.st_dev == st2.st_dev) {
+ log_error("Directory \"%s\" is not the root of the EFI System Partition (ESP) file system.", p);
+ return -ENODEV;
+ }
+
+ /* In a container we don't have access to block devices, skip this part of the verification, we trust the
+ * container manager set everything up correctly on its own. */
+ if (detect_container() > 0)
+ goto finish;
+
+ r = asprintf(&t, "/dev/block/%u:%u", major(st.st_dev), minor(st.st_dev));
+ if (r < 0)
+ return log_oom();
+
+ errno = 0;
+ b = blkid_new_probe_from_filename(t);
+ if (!b) {
+ if (errno == 0)
+ return log_oom();
+
+ return log_error_errno(errno, "Failed to open file system \"%s\": %m", p);
+ }
+
+ blkid_probe_enable_superblocks(b, 1);
+ blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE);
+ blkid_probe_enable_partitions(b, 1);
+ blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
+
+ errno = 0;
+ r = blkid_do_safeprobe(b);
+ if (r == -2) {
+ log_error("File system \"%s\" is ambiguous.", p);
+ return -ENODEV;
+ } else if (r == 1) {
+ log_error("File system \"%s\" does not contain a label.", p);
+ return -ENODEV;
+ } else if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe file system \"%s\": %m", p);
+ }
+
+ errno = 0;
+ r = blkid_probe_lookup_value(b, "TYPE", &v, NULL);
+ if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe file system type \"%s\": %m", p);
+ }
+ if (!streq(v, "vfat")) {
+ log_error("File system \"%s\" is not FAT.", p);
+ return -ENODEV;
+ }
+
+ errno = 0;
+ r = blkid_probe_lookup_value(b, "PART_ENTRY_SCHEME", &v, NULL);
+ if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe partition scheme \"%s\": %m", p);
+ }
+ if (!streq(v, "gpt")) {
+ log_error("File system \"%s\" is not on a GPT partition table.", p);
+ return -ENODEV;
+ }
+
+ errno = 0;
+ r = blkid_probe_lookup_value(b, "PART_ENTRY_TYPE", &v, NULL);
+ if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe partition type UUID \"%s\": %m", p);
+ }
+ if (!streq(v, "c12a7328-f81f-11d2-ba4b-00a0c93ec93b")) {
+ log_error("File system \"%s\" has wrong type for an EFI System Partition (ESP).", p);
+ return -ENODEV;
+ }
+
+ errno = 0;
+ r = blkid_probe_lookup_value(b, "PART_ENTRY_UUID", &v, NULL);
+ if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe partition entry UUID \"%s\": %m", p);
+ }
+ r = sd_id128_from_string(v, &uuid);
+ if (r < 0) {
+ log_error("Partition \"%s\" has invalid UUID \"%s\".", p, v);
+ return -EIO;
+ }
+
+ errno = 0;
+ r = blkid_probe_lookup_value(b, "PART_ENTRY_NUMBER", &v, NULL);
+ if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe partition number \"%s\": m", p);
+ }
+ r = safe_atou32(v, &part);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse PART_ENTRY_NUMBER field.");
+
+ errno = 0;
+ r = blkid_probe_lookup_value(b, "PART_ENTRY_OFFSET", &v, NULL);
+ if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe partition offset \"%s\": %m", p);
+ }
+ r = safe_atou64(v, &pstart);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse PART_ENTRY_OFFSET field.");
+
+ errno = 0;
+ r = blkid_probe_lookup_value(b, "PART_ENTRY_SIZE", &v, NULL);
+ if (r != 0) {
+ r = errno ? -errno : -EIO;
+ return log_error_errno(r, "Failed to probe partition size \"%s\": %m", p);
+ }
+ r = safe_atou64(v, &psize);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse PART_ENTRY_SIZE field.");
+
+finish:
+ if (ret_part)
+ *ret_part = part;
+ if (ret_pstart)
+ *ret_pstart = pstart;
+ if (ret_psize)
+ *ret_psize = psize;
+ if (ret_uuid)
+ *ret_uuid = uuid;
+
+ return 0;
+}
+
+static int find_esp(uint32_t *part, uint64_t *pstart, uint64_t *psize, sd_id128_t *uuid) {
+ const char *path;
+ int r;
+
+ if (arg_path)
+ return verify_esp(false, arg_path, part, pstart, psize, uuid);
+
+ FOREACH_STRING(path, "/efi", "/boot", "/boot/efi") {
+
+ r = verify_esp(true, path, part, pstart, psize, uuid);
+ if (IN_SET(r, -ENOENT, -EADDRNOTAVAIL)) /* This one is not it */
+ continue;
+ if (r < 0)
+ return r;
+
+ arg_path = strdup(path);
+ if (!arg_path)
+ return log_oom();
+
+ log_info("Using EFI System Parition at %s.", path);
+ return 0;
+ }
+
+ log_error("Couldn't find EFI system partition. It is recommended to mount it to /boot. Alternatively, use --path= to specify path to mount point.");
+ return -ENOENT;
+}
+
+/* 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");
+
+ 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(partition));
+
+ 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;
+
+ if (!is_efi_boot()) {
+ log_notice("Not booted with EFI, not showing EFI variables.");
+ return 0;
+ }
+
+ n_options = efi_get_boot_options(&options);
+ if (n_options == -ENOENT)
+ return log_error_errno(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 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, const char *from, const char *to) {
+ _cleanup_free_ char *a = NULL, *b = NULL;
+ _cleanup_close_ int fd2 = -1;
+ int r;
+
+ assert(fd >= 0);
+ assert(from);
+ assert(to);
+
+ r = get_file_version(fd, &a);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ log_error("Source file \"%s\" does not carry version information!", from);
+ return -EINVAL;
+ }
+
+ fd2 = open(to, O_RDONLY|O_CLOEXEC);
+ if (fd2 < 0) {
+ if (errno == ENOENT)
+ return 0;
+
+ return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", to);
+ }
+
+ r = get_file_version(fd2, &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(const char *from, const char *to, bool force) {
+ _cleanup_fclose_ FILE *f = NULL, *g = NULL;
+ char *p;
+ int r;
+ struct timespec t[2];
+ struct stat st;
+
+ assert(from);
+ assert(to);
+
+ f = fopen(from, "re");
+ if (!f)
+ return log_error_errno(errno, "Failed to open \"%s\" for reading: %m", from);
+
+ if (!force) {
+ /* If this is an update, then let's compare versions first */
+ r = version_check(fileno(f), from, to);
+ if (r < 0)
+ return r;
+ }
+
+ p = strjoina(to, "~");
+ g = fopen(p, "wxe");
+ if (!g) {
+ /* Directory doesn't exist yet? Then let's skip this... */
+ if (!force && errno == ENOENT)
+ return 0;
+
+ return log_error_errno(errno, "Failed to open \"%s\" for writing: %m", to);
+ }
+
+ rewind(f);
+ do {
+ size_t k;
+ uint8_t buf[32*1024];
+
+ k = fread(buf, 1, sizeof(buf), f);
+ if (ferror(f)) {
+ r = log_error_errno(EIO, "Failed to read \"%s\": %m", from);
+ goto error;
+ }
+
+ if (k == 0)
+ break;
+
+ fwrite(buf, 1, k, g);
+ if (ferror(g)) {
+ r = log_error_errno(EIO, "Failed to write \"%s\": %m", to);
+ goto error;
+ }
+ } while (!feof(f));
+
+ r = fflush_and_check(g);
+ if (r < 0) {
+ log_error_errno(r, "Failed to write \"%s\": %m", to);
+ goto error;
+ }
+
+ r = fstat(fileno(f), &st);
+ if (r < 0) {
+ r = log_error_errno(errno, "Failed to get file timestamps of \"%s\": %m", from);
+ goto error;
+ }
+
+ t[0] = st.st_atim;
+ t[1] = st.st_mtim;
+
+ r = futimens(fileno(g), t);
+ if (r < 0) {
+ r = log_error_errno(errno, "Failed to set file timestamps on \"%s\": %m", p);
+ goto error;
+ }
+
+ if (rename(p, to) < 0) {
+ r = log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", p, to);
+ goto error;
+ }
+
+ log_info("Copied \"%s\" to \"%s\".", from, to);
+ return 0;
+
+error:
+ (void) unlink(p);
+ return r;
+}
+
+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(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(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, "Systemd 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 \"Systemd 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) {
+
+ _cleanup_fclose_ FILE *f = NULL;
+ char machine_string[SD_ID128_STRING_MAX];
+ sd_id128_t machine_id;
+ const char *p;
+ int r;
+
+ r = sd_id128_get_machine(&machine_id);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get machine did: %m");
+
+ p = strjoina(esp_path, "/loader/loader.conf");
+ f = fopen(p, "wxe");
+ if (!f)
+ return log_error_errno(errno, "Failed to open loader.conf for writing: %m");
+
+ fprintf(f, "#timeout 3\n");
+ fprintf(f, "default %s-*\n", sd_id128_to_string(machine_id, machine_string));
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write \"%s\": %m", p);
+
+ return 0;
+}
+
+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"
+ " --no-variables Don't touch EFI variables\n"
+ "\n"
+ "Commands:\n"
+ " status Show status of installed systemd-boot and EFI variables\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 },
+ { "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, "h", 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 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 must_be_root(void) {
+
+ if (geteuid() == 0)
+ return 0;
+
+ log_error("Need to be root.");
+ return -EPERM;
+}
+
+static int verb_status(int argc, char *argv[], void *userdata) {
+
+ sd_id128_t uuid = SD_ID128_NULL;
+ int r;
+
+ r = must_be_root();
+ if (r < 0)
+ return r;
+
+ r = find_esp(NULL, NULL, NULL, &uuid);
+ if (r < 0)
+ return r;
+
+ if (is_efi_boot()) {
+ _cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = 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("LoaderImageIdentifier", &loader_path);
+
+ if (loader_path)
+ efi_tilt_backslashes(loader_path);
+
+ r = efi_loader_get_device_part_uuid(&loader_part_uuid);
+ if (r < 0 && r != -ENOENT)
+ log_warning_errno(r, "Failed to read EFI variable LoaderDevicePartUUID: %m");
+
+ printf("System:\n");
+ printf(" Firmware: %s (%s)\n", strna(fw_type), strna(fw_info));
+
+ r = is_efi_secure_boot();
+ if (r < 0)
+ log_warning_errno(r, "Failed to query secure boot status: %m");
+ else
+ printf(" Secure Boot: %sd\n", enable_disable(r));
+
+ r = is_efi_secure_boot_setup_mode();
+ if (r < 0)
+ log_warning_errno(r, "Failed to query secure boot mode: %m");
+ else
+ printf(" Setup Mode: %s\n", r ? "setup" : "user");
+ printf("\n");
+
+ printf("Loader:\n");
+ printf(" Product: %s\n", strna(loader));
+ if (!sd_id128_is_null(loader_part_uuid))
+ 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(loader_part_uuid));
+ else
+ printf(" Partition: 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");
+
+ r = status_binaries(arg_path, uuid);
+ if (r < 0)
+ return r;
+
+ if (arg_touch_variables)
+ r = status_variables();
+
+ return r;
+}
+
+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 = must_be_root();
+ if (r < 0)
+ return r;
+
+ r = find_esp(&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 = must_be_root();
+ if (r < 0)
+ return r;
+
+ r = find_esp(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 },
+ { "install", VERB_ANY, 1, 0, verb_install },
+ { "update", VERB_ANY, 1, 0, verb_install },
+ { "remove", VERB_ANY, 1, 0, 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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 14:45:15 +0000