mirror of
https://github.com/morgan9e/systemd
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2857a83975
You can configure the sysfail boot entry using the bootctl command: $ bootctl set-sysfail sysfail.conf The value will be stored in the `LoaderEntrySysFail` EFI variable. The `LoaderEntrySysFail` EFI variable would be unset automatically during next boot by `systemd-boot-clear-sysfail.service` if no system failure occured, otherwise it would be kept as it is and a system failure reason will be saved to `LoaderSysFailReason` EFI variable. Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>
185 lines
7.9 KiB
C
185 lines
7.9 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <uchar.h>
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#include <unistd.h>
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#include "alloc-util.h"
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#include "bootctl.h"
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#include "bootctl-set-efivar.h"
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#include "efi-loader.h"
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#include "efivars.h"
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#include "stdio-util.h"
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#include "utf8.h"
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#include "virt.h"
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static int parse_timeout(const char *arg1, char16_t **ret_timeout, size_t *ret_timeout_size) {
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char utf8[DECIMAL_STR_MAX(usec_t)];
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char16_t *encoded;
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usec_t timeout;
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bool menu_disabled = false;
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int r;
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assert(arg1);
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assert(ret_timeout);
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assert(ret_timeout_size);
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assert_cc(STRLEN("menu-disabled") < ELEMENTSOF(utf8));
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/* Note: Since there is no way to query if the bootloader supports the string tokens, we explicitly
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* set their numerical value(s) instead. This means that some of the sd-boot internal ABI has leaked
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* although the ship has sailed and the side-effects are self-contained.
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*/
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if (streq(arg1, "menu-force"))
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timeout = USEC_INFINITY;
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else if (streq(arg1, "menu-hidden"))
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timeout = 0;
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else if (streq(arg1, "menu-disabled")) {
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uint64_t loader_features = 0;
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(void) efi_loader_get_features(&loader_features);
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if (!(loader_features & EFI_LOADER_FEATURE_MENU_DISABLE)) {
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if (!arg_graceful)
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return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "Loader does not support 'menu-disabled'.");
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log_warning("Loader does not support 'menu-disabled', setting anyway.");
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}
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menu_disabled = true;
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} else {
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r = parse_time(arg1, &timeout, USEC_PER_SEC);
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if (r < 0)
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return log_error_errno(r, "Failed to parse timeout '%s': %m", arg1);
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if (timeout != USEC_INFINITY && timeout > UINT32_MAX * USEC_PER_SEC)
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log_warning("Timeout is too long and will be treated as 'menu-force' instead.");
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}
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if (menu_disabled)
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xsprintf(utf8, "menu-disabled");
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else
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xsprintf(utf8, USEC_FMT, MIN(timeout / USEC_PER_SEC, UINT32_MAX));
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encoded = utf8_to_utf16(utf8, SIZE_MAX);
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if (!encoded)
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return log_oom();
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*ret_timeout = encoded;
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*ret_timeout_size = char16_strlen(encoded) * 2 + 2;
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return 0;
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}
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static int parse_loader_entry_target_arg(const char *arg1, char16_t **ret_target, size_t *ret_target_size) {
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char16_t *encoded = NULL;
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int r;
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assert(arg1);
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assert(ret_target);
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assert(ret_target_size);
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if (streq(arg1, "@current")) {
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r = efi_get_variable(EFI_LOADER_VARIABLE_STR("LoaderEntrySelected"), NULL, (void *) ret_target, ret_target_size);
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if (r < 0)
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return log_error_errno(r, "Failed to get EFI variable 'LoaderEntrySelected': %m");
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} else if (streq(arg1, "@oneshot")) {
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r = efi_get_variable(EFI_LOADER_VARIABLE_STR("LoaderEntryOneShot"), NULL, (void *) ret_target, ret_target_size);
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if (r < 0)
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return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryOneShot': %m");
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} else if (streq(arg1, "@default")) {
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r = efi_get_variable(EFI_LOADER_VARIABLE_STR("LoaderEntryDefault"), NULL, (void *) ret_target, ret_target_size);
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if (r < 0)
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return log_error_errno(r, "Failed to get EFI variable 'LoaderEntryDefault': %m");
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} else if (streq(arg1, "@sysfail")) {
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r = efi_get_variable(EFI_LOADER_VARIABLE_STR("LoaderEntrySysFail"), NULL, (void *) ret_target, ret_target_size);
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if (r < 0)
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return log_error_errno(r, "Failed to get EFI variable 'LoaderEntrySysFail': %m");
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} else if (arg1[0] == '@' && !streq(arg1, "@saved"))
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unsupported special entry identifier: %s", arg1);
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else {
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encoded = utf8_to_utf16(arg1, SIZE_MAX);
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if (!encoded)
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return log_oom();
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*ret_target = encoded;
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*ret_target_size = char16_strlen(encoded) * 2 + 2;
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}
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return 0;
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}
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int verb_set_efivar(int argc, char *argv[], void *userdata) {
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int r;
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/* Note: changing EFI variables is the primary purpose of these verbs, hence unlike in the other
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* verbs that might touch EFI variables where we skip things gracefully, here we fail loudly if we
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* are not run on EFI or EFI variable modifications were turned off. */
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if (arg_touch_variables < 0) {
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if (arg_root)
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return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
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"Acting on %s, refusing EFI variable setup.",
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arg_image ? "image" : "root directory");
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if (detect_container() > 0)
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return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
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"'%s' operation not supported in a container.",
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argv[0]);
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if (!is_efi_boot())
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return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
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"Not booted with UEFI.");
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if (access(EFIVAR_PATH(EFI_LOADER_VARIABLE_STR("LoaderInfo")), F_OK) < 0) {
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if (errno == ENOENT) {
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log_error_errno(errno, "Not booted with a supported boot loader.");
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return -EOPNOTSUPP;
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}
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return log_error_errno(errno, "Failed to detect whether boot loader supports '%s' operation: %m", argv[0]);
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}
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} else if (!arg_touch_variables)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
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"'%s' operation cannot be combined with --variables=no.",
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argv[0]);
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const char *variable;
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int (* arg_parser)(const char *, char16_t **, size_t *);
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if (streq(argv[0], "set-default")) {
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variable = EFI_LOADER_VARIABLE_STR("LoaderEntryDefault");
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arg_parser = parse_loader_entry_target_arg;
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} else if (streq(argv[0], "set-sysfail")) {
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variable = EFI_LOADER_VARIABLE_STR("LoaderEntrySysFail");
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arg_parser = parse_loader_entry_target_arg;
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} else if (streq(argv[0], "set-oneshot")) {
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variable = EFI_LOADER_VARIABLE_STR("LoaderEntryOneShot");
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arg_parser = parse_loader_entry_target_arg;
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} else if (streq(argv[0], "set-timeout")) {
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variable = EFI_LOADER_VARIABLE_STR("LoaderConfigTimeout");
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arg_parser = parse_timeout;
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} else if (streq(argv[0], "set-timeout-oneshot")) {
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variable = EFI_LOADER_VARIABLE_STR("LoaderConfigTimeoutOneShot");
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arg_parser = parse_timeout;
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} else
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assert_not_reached();
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if (isempty(argv[1])) {
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r = efi_set_variable(variable, NULL, 0);
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if (r < 0 && r != -ENOENT)
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return log_error_errno(r, "Failed to remove EFI variable '%s': %m", variable);
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} else {
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_cleanup_free_ char16_t *value = NULL;
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size_t value_size = 0;
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r = arg_parser(argv[1], &value, &value_size);
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if (r < 0)
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return r;
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r = efi_set_variable(variable, value, value_size);
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if (r < 0)
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return log_error_errno(r, "Failed to update EFI variable '%s': %m", variable);
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}
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return 0;
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}
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