diff options
Diffstat (limited to 'src/boot/bootctl-status.c')
| -rw-r--r-- | src/boot/bootctl-status.c | 829 |
1 files changed, 829 insertions, 0 deletions
diff --git a/src/boot/bootctl-status.c b/src/boot/bootctl-status.c new file mode 100644 index 0000000..d171512 --- /dev/null +++ b/src/boot/bootctl-status.c @@ -0,0 +1,829 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <sys/mman.h> +#include <unistd.h> + +#include "bootctl.h" +#include "bootctl-status.h" +#include "bootctl-util.h" +#include "bootspec.h" +#include "chase.h" +#include "devnum-util.h" +#include "dirent-util.h" +#include "efi-api.h" +#include "efi-loader.h" +#include "errno-util.h" +#include "fd-util.h" +#include "fileio.h" +#include "find-esp.h" +#include "path-util.h" +#include "pretty-print.h" +#include "recurse-dir.h" +#include "terminal-util.h" +#include "tpm2-util.h" + +static int boot_config_load_and_select( + BootConfig *config, + const char *esp_path, + dev_t esp_devid, + const char *xbootldr_path, + dev_t xbootldr_devid) { + + int r; + + /* If XBOOTLDR and ESP actually refer to the same block device, suppress XBOOTLDR, since it would + * find the same entries twice. */ + bool same = esp_path && xbootldr_path && devnum_set_and_equal(esp_devid, xbootldr_devid); + + r = boot_config_load(config, esp_path, same ? NULL : xbootldr_path); + if (r < 0) + return r; + + if (!arg_root) { + _cleanup_strv_free_ char **efi_entries = NULL; + + r = efi_loader_get_entries(&efi_entries); + if (r == -ENOENT || ERRNO_IS_NEG_NOT_SUPPORTED(r)) + log_debug_errno(r, "Boot loader reported no entries."); + else if (r < 0) + log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m"); + else + (void) boot_config_augment_from_loader(config, efi_entries, /* only_auto= */ false); + } + + return boot_config_select_special_entries(config, /* skip_efivars= */ !!arg_root); +} + +static int status_entries( + const BootConfig *config, + const char *esp_path, + sd_id128_t esp_partition_uuid, + const char *xbootldr_path, + sd_id128_t xbootldr_partition_uuid) { + + sd_id128_t dollar_boot_partition_uuid; + const char *dollar_boot_path; + int r; + + assert(config); + assert(esp_path || xbootldr_path); + + if (xbootldr_path) { + dollar_boot_path = xbootldr_path; + dollar_boot_partition_uuid = xbootldr_partition_uuid; + } else { + dollar_boot_path = esp_path; + dollar_boot_partition_uuid = esp_partition_uuid; + } + + printf("%sBoot Loader Entries:%s\n" + " $BOOT: %s", ansi_underline(), ansi_normal(), dollar_boot_path); + if (!sd_id128_is_null(dollar_boot_partition_uuid)) + printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", + SD_ID128_FORMAT_VAL(dollar_boot_partition_uuid)); + if (settle_entry_token() >= 0) + printf("\n token: %s", arg_entry_token); + printf("\n\n"); + + if (config->default_entry < 0) + printf("%zu entries, no entry could be determined as default.\n", config->n_entries); + else { + printf("%sDefault Boot Loader Entry:%s\n", ansi_underline(), ansi_normal()); + + r = show_boot_entry( + boot_config_default_entry(config), + /* show_as_default= */ false, + /* show_as_selected= */ false, + /* show_discovered= */ false); + if (r > 0) + /* < 0 is already logged by the function itself, let's just emit an extra warning if + the default entry is broken */ + printf("\nWARNING: default boot entry is broken\n"); + } + + return 0; +} + +static int print_efi_option(uint16_t id, int *n_printed, bool in_order) { + _cleanup_free_ char *title = NULL; + _cleanup_free_ char *path = NULL; + sd_id128_t partition; + bool active; + int r; + + assert(n_printed); + + r = efi_get_boot_option(id, &title, &partition, &path, &active); + if (r == -ENOENT) { + log_debug_errno(r, "Boot option 0x%04X referenced but missing, ignoring: %m", id); + return 0; + } + if (r < 0) + return log_error_errno(r, "Failed to read boot option 0x%04X: %m", id); + + /* print only configured entries with partition information */ + if (!path || sd_id128_is_null(partition)) { + log_debug("Ignoring boot entry 0x%04X without partition information.", id); + return 0; + } + + efi_tilt_backslashes(path); + + if (*n_printed == 0) /* Print section title before first entry */ + printf("%sBoot Loaders Listed in EFI Variables:%s\n", ansi_underline(), ansi_normal()); + + printf(" Title: %s%s%s\n", ansi_highlight(), strna(title), ansi_normal()); + printf(" ID: 0x%04X\n", id); + printf(" Status: %sactive%s\n", active ? "" : "in", in_order ? ", boot-order" : ""); + printf(" Partition: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n", + SD_ID128_FORMAT_VAL(partition)); + printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), path); + printf("\n"); + + (*n_printed)++; + return 1; +} + +static int status_variables(void) { + _cleanup_free_ uint16_t *options = NULL, *order = NULL; + int n_options, n_order, n_printed = 0; + + n_options = efi_get_boot_options(&options); + if (n_options == -ENOENT) + return log_error_errno(n_options, + "Failed to access EFI variables, efivarfs" + " needs to be available at /sys/firmware/efi/efivars/."); + if (n_options < 0) + return log_error_errno(n_options, "Failed to read EFI boot entries: %m"); + + n_order = efi_get_boot_order(&order); + if (n_order == -ENOENT) + n_order = 0; + else if (n_order < 0) + return log_error_errno(n_order, "Failed to read EFI boot order: %m"); + + /* print entries in BootOrder first */ + for (int i = 0; i < n_order; i++) + (void) print_efi_option(order[i], &n_printed, /* in_order= */ true); + + /* print remaining entries */ + for (int i = 0; i < n_options; i++) { + for (int j = 0; j < n_order; j++) + if (options[i] == order[j]) + goto next_option; + + (void) print_efi_option(options[i], &n_printed, /* in_order= */ false); + + next_option: + continue; + } + + if (n_printed == 0) + printf("No boot loaders listed in EFI Variables.\n\n"); + + return 0; +} + +static int enumerate_binaries( + const char *esp_path, + const char *path, + const char *prefix, + char **previous, + bool *is_first) { + + _cleanup_closedir_ DIR *d = NULL; + _cleanup_free_ char *p = NULL; + int c = 0, r; + + assert(esp_path); + assert(path); + assert(previous); + assert(is_first); + + r = chase_and_opendir(path, esp_path, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, &p, &d); + if (r == -ENOENT) + return 0; + if (r < 0) + return log_error_errno(r, "Failed to read \"%s/%s\": %m", esp_path, path); + + FOREACH_DIRENT(de, d, break) { + _cleanup_free_ char *v = NULL, *filename = NULL; + _cleanup_close_ int fd = -EBADF; + + if (!endswith_no_case(de->d_name, ".efi")) + continue; + + if (prefix && !startswith_no_case(de->d_name, prefix)) + continue; + + filename = path_join(p, de->d_name); + if (!filename) + return log_oom(); + LOG_SET_PREFIX(filename); + + fd = openat(dirfd(d), de->d_name, O_RDONLY|O_CLOEXEC); + if (fd < 0) + return log_error_errno(errno, "Failed to open file for reading: %m"); + + r = get_file_version(fd, &v); + + if (r < 0 && r != -ESRCH) + return r; + + if (*previous) { /* Let's output the previous entry now, since now we know that there will be + * one more, and can draw the tree glyph properly. */ + printf(" %s %s%s\n", + *is_first ? "File:" : " ", + special_glyph(SPECIAL_GLYPH_TREE_BRANCH), *previous); + *is_first = false; + *previous = mfree(*previous); + } + + /* Do not output this entry immediately, but store what should be printed in a state + * variable, because we only will know the tree glyph to print (branch or final edge) once we + * read one more entry */ + if (r == -ESRCH) /* No systemd-owned file but still interesting to print */ + r = asprintf(previous, "/%s/%s", path, de->d_name); + else /* if (r >= 0) */ + r = asprintf(previous, "/%s/%s (%s%s%s)", path, de->d_name, ansi_highlight(), v, ansi_normal()); + if (r < 0) + return log_oom(); + + c++; + } + + return c; +} + +static int status_binaries(const char *esp_path, sd_id128_t partition) { + _cleanup_free_ char *last = NULL; + bool is_first = true; + int r, k; + + printf("%sAvailable Boot Loaders on ESP:%s\n", ansi_underline(), ansi_normal()); + + if (!esp_path) { + printf(" ESP: Cannot find or access mount point of ESP.\n\n"); + return -ENOENT; + } + + printf(" ESP: %s", esp_path); + if (!sd_id128_is_null(partition)) + printf(" (/dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR ")", SD_ID128_FORMAT_VAL(partition)); + printf("\n"); + + r = enumerate_binaries(esp_path, "EFI/systemd", NULL, &last, &is_first); + if (r < 0) + goto fail; + + k = enumerate_binaries(esp_path, "EFI/BOOT", "boot", &last, &is_first); + if (k < 0) { + r = k; + goto fail; + } + + if (last) /* let's output the last entry now, since now we know that there will be no more, and can draw the tree glyph properly */ + printf(" %s %s%s\n", + is_first ? "File:" : " ", + special_glyph(SPECIAL_GLYPH_TREE_RIGHT), last); + + if (r == 0 && !arg_quiet) + log_info("systemd-boot not installed in ESP."); + if (k == 0 && !arg_quiet) + log_info("No default/fallback boot loader installed in ESP."); + + printf("\n"); + return 0; + +fail: + errno = -r; + printf(" File: (can't access %s: %m)\n\n", esp_path); + return r; +} + +static void read_efi_var(const char *variable, char **ret) { + int r; + + r = efi_get_variable_string(variable, ret); + if (r < 0 && r != -ENOENT) + log_warning_errno(r, "Failed to read EFI variable %s: %m", variable); +} + +static void print_yes_no_line(bool first, bool good, const char *name) { + printf("%s%s %s\n", + first ? " Features: " : " ", + COLOR_MARK_BOOL(good), + name); +} + +int verb_status(int argc, char *argv[], void *userdata) { + sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL; + dev_t esp_devid = 0, xbootldr_devid = 0; + int r, k; + + r = acquire_esp(/* unprivileged_mode= */ -1, /* graceful= */ false, NULL, NULL, NULL, &esp_uuid, &esp_devid); + if (arg_print_esp_path) { + if (r == -EACCES) /* If we couldn't acquire the ESP path, log about access errors (which is the only + * error the find_esp_and_warn() won't log on its own) */ + return log_error_errno(r, "Failed to determine ESP location: %m"); + if (r < 0) + return r; + + puts(arg_esp_path); + return 0; + } + + r = acquire_xbootldr(/* unprivileged_mode= */ -1, &xbootldr_uuid, &xbootldr_devid); + if (arg_print_dollar_boot_path) { + if (r == -EACCES) + return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m"); + if (r < 0) + return r; + + const char *path = arg_dollar_boot_path(); + if (!path) + return log_error_errno(SYNTHETIC_ERRNO(EACCES), "Failed to determine XBOOTLDR location: %m"); + + puts(path); + return 0; + } + + r = 0; /* If we couldn't determine the path, then don't consider that a problem from here on, just + * show what we can show */ + + pager_open(arg_pager_flags); + + if (!arg_root && is_efi_boot()) { + static const struct { + uint64_t flag; + const char *name; + } loader_flags[] = { + { EFI_LOADER_FEATURE_BOOT_COUNTING, "Boot counting" }, + { EFI_LOADER_FEATURE_CONFIG_TIMEOUT, "Menu timeout control" }, + { EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT, "One-shot menu timeout control" }, + { EFI_LOADER_FEATURE_ENTRY_DEFAULT, "Default entry control" }, + { EFI_LOADER_FEATURE_ENTRY_ONESHOT, "One-shot entry control" }, + { EFI_LOADER_FEATURE_XBOOTLDR, "Support for XBOOTLDR partition" }, + { EFI_LOADER_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" }, + { EFI_LOADER_FEATURE_LOAD_DRIVER, "Load drop-in drivers" }, + { EFI_LOADER_FEATURE_SORT_KEY, "Support Type #1 sort-key field" }, + { EFI_LOADER_FEATURE_SAVED_ENTRY, "Support @saved pseudo-entry" }, + { EFI_LOADER_FEATURE_DEVICETREE, "Support Type #1 devicetree field" }, + { EFI_LOADER_FEATURE_SECUREBOOT_ENROLL, "Enroll SecureBoot keys" }, + { EFI_LOADER_FEATURE_RETAIN_SHIM, "Retain SHIM protocols" }, + { EFI_LOADER_FEATURE_MENU_DISABLE, "Menu can be disabled" }, + }; + static const struct { + uint64_t flag; + const char *name; + } stub_flags[] = { + { EFI_STUB_FEATURE_REPORT_BOOT_PARTITION, "Stub sets ESP information" }, + { EFI_STUB_FEATURE_PICK_UP_CREDENTIALS, "Picks up credentials from boot partition" }, + { EFI_STUB_FEATURE_PICK_UP_SYSEXTS, "Picks up system extension images from boot partition" }, + { EFI_STUB_FEATURE_THREE_PCRS, "Measures kernel+command line+sysexts" }, + { EFI_STUB_FEATURE_RANDOM_SEED, "Support for passing random seed to OS" }, + { EFI_STUB_FEATURE_CMDLINE_ADDONS, "Pick up .cmdline from addons" }, + { EFI_STUB_FEATURE_CMDLINE_SMBIOS, "Pick up .cmdline from SMBIOS Type 11" }, + { EFI_STUB_FEATURE_DEVICETREE_ADDONS, "Pick up .dtb from addons" }, + }; + _cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL; + sd_id128_t loader_part_uuid = SD_ID128_NULL; + uint64_t loader_features = 0, stub_features = 0; + Tpm2Support s; + int have; + + read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareType), &fw_type); + read_efi_var(EFI_LOADER_VARIABLE(LoaderFirmwareInfo), &fw_info); + read_efi_var(EFI_LOADER_VARIABLE(LoaderInfo), &loader); + read_efi_var(EFI_LOADER_VARIABLE(StubInfo), &stub); + read_efi_var(EFI_LOADER_VARIABLE(LoaderImageIdentifier), &loader_path); + (void) efi_loader_get_features(&loader_features); + (void) efi_stub_get_features(&stub_features); + + if (loader_path) + efi_tilt_backslashes(loader_path); + + k = efi_loader_get_device_part_uuid(&loader_part_uuid); + if (k < 0 && k != -ENOENT) + r = log_warning_errno(k, "Failed to read EFI variable LoaderDevicePartUUID: %m"); + + SecureBootMode secure = efi_get_secure_boot_mode(); + printf("%sSystem:%s\n", ansi_underline(), ansi_normal()); + printf(" Firmware: %s%s (%s)%s\n", ansi_highlight(), strna(fw_type), strna(fw_info), ansi_normal()); + printf(" Firmware Arch: %s\n", get_efi_arch()); + printf(" Secure Boot: %s%s%s", + IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED) ? ansi_highlight_green() : ansi_normal(), + enabled_disabled(IN_SET(secure, SECURE_BOOT_USER, SECURE_BOOT_DEPLOYED)), + ansi_normal()); + + if (secure != SECURE_BOOT_DISABLED) + printf(" (%s)\n", secure_boot_mode_to_string(secure)); + else + printf("\n"); + + s = tpm2_support(); + printf(" TPM2 Support: %s%s%s\n", + FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? ansi_highlight_green() : + (s & (TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER)) != 0 ? ansi_highlight_red() : ansi_highlight_yellow(), + FLAGS_SET(s, TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER) ? "yes" : + (s & TPM2_SUPPORT_FIRMWARE) ? "firmware only, driver unavailable" : + (s & TPM2_SUPPORT_DRIVER) ? "driver only, firmware unavailable" : "no", + ansi_normal()); + + k = efi_measured_uki(LOG_DEBUG); + if (k > 0) + printf(" Measured UKI: %syes%s\n", ansi_highlight_green(), ansi_normal()); + else if (k == 0) + printf(" Measured UKI: no\n"); + else { + errno = -k; + printf(" Measured UKI: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal()); + } + + k = efi_get_reboot_to_firmware(); + if (k > 0) + printf(" Boot into FW: %sactive%s\n", ansi_highlight_yellow(), ansi_normal()); + else if (k == 0) + printf(" Boot into FW: supported\n"); + else if (k == -EOPNOTSUPP) + printf(" Boot into FW: not supported\n"); + else { + errno = -k; + printf(" Boot into FW: %sfailed%s (%m)\n", ansi_highlight_red(), ansi_normal()); + } + printf("\n"); + + printf("%sCurrent Boot Loader:%s\n", ansi_underline(), ansi_normal()); + printf(" Product: %s%s%s\n", ansi_highlight(), strna(loader), ansi_normal()); + + for (size_t i = 0; i < ELEMENTSOF(loader_flags); i++) + print_yes_no_line(i == 0, FLAGS_SET(loader_features, loader_flags[i].flag), loader_flags[i].name); + + sd_id128_t bootloader_esp_uuid; + bool have_bootloader_esp_uuid = efi_loader_get_device_part_uuid(&bootloader_esp_uuid) >= 0; + + print_yes_no_line(false, have_bootloader_esp_uuid, "Boot loader sets ESP information"); + if (have_bootloader_esp_uuid && !sd_id128_is_null(esp_uuid) && + !sd_id128_equal(esp_uuid, bootloader_esp_uuid)) + printf("WARNING: The boot loader reports a different ESP UUID than detected ("SD_ID128_UUID_FORMAT_STR" vs. "SD_ID128_UUID_FORMAT_STR")!\n", + SD_ID128_FORMAT_VAL(bootloader_esp_uuid), + SD_ID128_FORMAT_VAL(esp_uuid)); + + if (stub) { + printf(" Stub: %s\n", stub); + for (size_t i = 0; i < ELEMENTSOF(stub_flags); i++) + print_yes_no_line(i == 0, FLAGS_SET(stub_features, stub_flags[i].flag), stub_flags[i].name); + } + if (!sd_id128_is_null(loader_part_uuid)) + printf(" ESP: /dev/disk/by-partuuid/" SD_ID128_UUID_FORMAT_STR "\n", + SD_ID128_FORMAT_VAL(loader_part_uuid)); + else + printf(" ESP: n/a\n"); + printf(" File: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path)); + printf("\n"); + + printf("%sRandom Seed:%s\n", ansi_underline(), ansi_normal()); + have = access(EFIVAR_PATH(EFI_LOADER_VARIABLE(LoaderSystemToken)), F_OK) >= 0; + printf(" System Token: %s\n", have ? "set" : "not set"); + + if (arg_esp_path) { + _cleanup_free_ char *p = NULL; + + p = path_join(arg_esp_path, "/loader/random-seed"); + if (!p) + return log_oom(); + + have = access(p, F_OK) >= 0; + printf(" Exists: %s\n", yes_no(have)); + } + + printf("\n"); + } else + printf("%sSystem:%s\n" + "Not booted with EFI\n\n", + ansi_underline(), ansi_normal()); + + if (arg_esp_path) + RET_GATHER(r, status_binaries(arg_esp_path, esp_uuid)); + + if (!arg_root && is_efi_boot()) + RET_GATHER(r, status_variables()); + + if (arg_esp_path || arg_xbootldr_path) { + _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL; + + k = boot_config_load_and_select(&config, + arg_esp_path, esp_devid, + arg_xbootldr_path, xbootldr_devid); + RET_GATHER(r, k); + + if (k >= 0) + RET_GATHER(r, + status_entries(&config, + arg_esp_path, esp_uuid, + arg_xbootldr_path, xbootldr_uuid)); + } + + return r; +} + +static int ref_file(Hashmap *known_files, const char *fn, int increment) { + char *k = NULL; + int n, r; + + assert(known_files); + + /* just gracefully ignore this. This way the caller doesn't + have to verify whether the bootloader entry is relevant */ + if (!fn) + return 0; + + n = PTR_TO_INT(hashmap_get2(known_files, fn, (void**)&k)); + n += increment; + + assert(n >= 0); + + if (n == 0) { + (void) hashmap_remove(known_files, fn); + free(k); + } else if (!k) { + _cleanup_free_ char *t = NULL; + + t = strdup(fn); + if (!t) + return -ENOMEM; + r = hashmap_put(known_files, t, INT_TO_PTR(n)); + if (r < 0) + return r; + TAKE_PTR(t); + } else { + r = hashmap_update(known_files, fn, INT_TO_PTR(n)); + if (r < 0) + return r; + } + + return n; +} + +static void deref_unlink_file(Hashmap *known_files, const char *fn, const char *root) { + _cleanup_free_ char *path = NULL; + int r; + + assert(known_files); + + /* just gracefully ignore this. This way the caller doesn't + have to verify whether the bootloader entry is relevant */ + if (!fn || !root) + return; + + r = ref_file(known_files, fn, -1); + if (r < 0) + return (void) log_warning_errno(r, "Failed to deref \"%s\", ignoring: %m", fn); + if (r > 0) + return; + + if (arg_dry_run) { + r = chase_and_access(fn, root, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, F_OK, &path); + if (r < 0) + log_info_errno(r, "Unable to determine whether \"%s\" exists, ignoring: %m", fn); + else + log_info("Would remove \"%s\"", path); + return; + } + + r = chase_and_unlink(fn, root, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, 0, &path); + if (r >= 0) + log_info("Removed \"%s\"", path); + else if (r != -ENOENT) + return (void) log_warning_errno(r, "Failed to remove \"%s\", ignoring: %m", fn); + + _cleanup_free_ char *d = NULL; + if (path_extract_directory(fn, &d) >= 0 && !path_equal(d, "/")) { + r = chase_and_unlink(d, root, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, AT_REMOVEDIR, NULL); + if (r < 0 && !IN_SET(r, -ENOTEMPTY, -ENOENT)) + log_warning_errno(r, "Failed to remove directory \"%s\", ignoring: %m", d); + } +} + +static int count_known_files(const BootConfig *config, const char* root, Hashmap **ret_known_files) { + _cleanup_(hashmap_free_free_keyp) Hashmap *known_files = NULL; + int r; + + assert(config); + assert(ret_known_files); + + known_files = hashmap_new(&path_hash_ops); + if (!known_files) + return -ENOMEM; + + for (size_t i = 0; i < config->n_entries; i++) { + const BootEntry *e = config->entries + i; + + if (!path_equal(e->root, root)) + continue; + + r = ref_file(known_files, e->kernel, +1); + if (r < 0) + return r; + r = ref_file(known_files, e->efi, +1); + if (r < 0) + return r; + STRV_FOREACH(s, e->initrd) { + r = ref_file(known_files, *s, +1); + if (r < 0) + return r; + } + r = ref_file(known_files, e->device_tree, +1); + if (r < 0) + return r; + STRV_FOREACH(s, e->device_tree_overlay) { + r = ref_file(known_files, *s, +1); + if (r < 0) + return r; + } + } + + *ret_known_files = TAKE_PTR(known_files); + + return 0; +} + +static int boot_config_find_in(const BootConfig *config, const char *root, const char *id) { + assert(config); + + if (!root || !id) + return -ENOENT; + + for (size_t i = 0; i < config->n_entries; i++) + if (path_equal(config->entries[i].root, root) && + fnmatch(id, config->entries[i].id, FNM_CASEFOLD) == 0) + return i; + + return -ENOENT; +} + +static int unlink_entry(const BootConfig *config, const char *root, const char *id) { + _cleanup_(hashmap_free_free_keyp) Hashmap *known_files = NULL; + const BootEntry *e = NULL; + int r; + + assert(config); + + r = count_known_files(config, root, &known_files); + if (r < 0) + return log_error_errno(r, "Failed to count files in %s: %m", root); + + r = boot_config_find_in(config, root, id); + if (r < 0) + return r; + + if (r == config->default_entry) + log_warning("%s is the default boot entry", id); + if (r == config->selected_entry) + log_warning("%s is the selected boot entry", id); + + e = &config->entries[r]; + + deref_unlink_file(known_files, e->kernel, e->root); + deref_unlink_file(known_files, e->efi, e->root); + STRV_FOREACH(s, e->initrd) + deref_unlink_file(known_files, *s, e->root); + deref_unlink_file(known_files, e->device_tree, e->root); + STRV_FOREACH(s, e->device_tree_overlay) + deref_unlink_file(known_files, *s, e->root); + + if (arg_dry_run) + log_info("Would remove \"%s\"", e->path); + else { + r = chase_and_unlink(e->path, root, CHASE_PROHIBIT_SYMLINKS, 0, NULL); + if (r < 0) + return log_error_errno(r, "Failed to remove \"%s\": %m", e->path); + + log_info("Removed %s", e->path); + } + + return 0; +} + +static int list_remove_orphaned_file( + RecurseDirEvent event, + const char *path, + int dir_fd, + int inode_fd, + const struct dirent *de, + const struct statx *sx, + void *userdata) { + + Hashmap *known_files = userdata; + + assert(path); + assert(known_files); + + if (event != RECURSE_DIR_ENTRY) + return RECURSE_DIR_CONTINUE; + + if (hashmap_get(known_files, path)) + return RECURSE_DIR_CONTINUE; /* keep! */ + + if (arg_dry_run) + log_info("Would remove %s", path); + else if (unlinkat(dir_fd, de->d_name, 0) < 0) + log_warning_errno(errno, "Failed to remove \"%s\", ignoring: %m", path); + else + log_info("Removed %s", path); + + return RECURSE_DIR_CONTINUE; +} + +static int cleanup_orphaned_files( + const BootConfig *config, + const char *root) { + + _cleanup_(hashmap_free_free_keyp) Hashmap *known_files = NULL; + _cleanup_free_ char *full = NULL, *p = NULL; + _cleanup_close_ int dir_fd = -EBADF; + int r; + + assert(config); + assert(root); + + log_info("Cleaning %s", root); + + r = settle_entry_token(); + if (r < 0) + return r; + + r = count_known_files(config, root, &known_files); + if (r < 0) + return log_error_errno(r, "Failed to count files in %s: %m", root); + + dir_fd = chase_and_open(arg_entry_token, root, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, + O_DIRECTORY|O_CLOEXEC, &full); + if (dir_fd == -ENOENT) + return 0; + if (dir_fd < 0) + return log_error_errno(dir_fd, "Failed to open '%s/%s': %m", root, arg_entry_token); + + p = path_join("/", arg_entry_token); + if (!p) + return log_oom(); + + r = recurse_dir(dir_fd, p, 0, UINT_MAX, RECURSE_DIR_SORT, list_remove_orphaned_file, known_files); + if (r < 0) + return log_error_errno(r, "Failed to cleanup %s: %m", full); + + return r; +} + +int verb_list(int argc, char *argv[], void *userdata) { + _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL; + dev_t esp_devid = 0, xbootldr_devid = 0; + int r; + + /* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two + * things: turn off logging about access errors and turn off potentially privileged device probing. + * Here we're interested in the latter but not the former, hence request the mode, and log about + * EACCES. */ + + r = acquire_esp(/* unprivileged_mode= */ -1, /* graceful= */ false, NULL, NULL, NULL, NULL, &esp_devid); + if (r == -EACCES) /* We really need the ESP path for this call, hence also log about access errors */ + return log_error_errno(r, "Failed to determine ESP location: %m"); + if (r < 0) + return r; + + r = acquire_xbootldr(/* unprivileged_mode= */ -1, NULL, &xbootldr_devid); + if (r == -EACCES) + return log_error_errno(r, "Failed to determine XBOOTLDR partition: %m"); + if (r < 0) + return r; + + r = boot_config_load_and_select(&config, arg_esp_path, esp_devid, arg_xbootldr_path, xbootldr_devid); + if (r < 0) + return r; + + if (config.n_entries == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) { + log_info("No boot loader entries found."); + return 0; + } + + if (streq(argv[0], "list")) { + pager_open(arg_pager_flags); + return show_boot_entries(&config, arg_json_format_flags); + } else if (streq(argv[0], "cleanup")) { + if (arg_xbootldr_path && xbootldr_devid != esp_devid) + cleanup_orphaned_files(&config, arg_xbootldr_path); + return cleanup_orphaned_files(&config, arg_esp_path); + } else { + assert(streq(argv[0], "unlink")); + if (arg_xbootldr_path && xbootldr_devid != esp_devid) { + r = unlink_entry(&config, arg_xbootldr_path, argv[1]); + if (r == 0 || r != -ENOENT) + return r; + } + return unlink_entry(&config, arg_esp_path, argv[1]); + } +} + +int verb_unlink(int argc, char *argv[], void *userdata) { + return verb_list(argc, argv, userdata); +} |