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bootctl: Add set-timeout verb

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Fixes: #18766
This commit is contained in:
Jan Janssen 2021-10-04 11:25:50 +02:00
parent 52b6b35643
commit 39ddc32a86
4 changed files with 79 additions and 11 deletions
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15
man/bootctl.xml
View File

@ -116,6 +116,21 @@
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>set-timeout</option> <replaceable>TIMEOUT</replaceable></term>
<term><option>set-timeout-oneshot</option> <replaceable>TIMEOUT</replaceable></term>
<listitem><para>Sets the boot loader menu timeout in seconds. The <option>set-timeout-oneshot</option>
command will set the timeout only for the next boot. See
<citerefentry><refentrytitle>systemd.time</refentrytitle><manvolnum>7</manvolnum></citerefentry>
for details about the syntax of time spans.</para>
<para>If this is set to <option>menu-hidden</option> or <option>0</option> no menu is shown and
the default entry will be booted immediately, while setting this to <option>menu-force</option>
disables the timeout while always showing the menu. When an empty string ("") is specified the
bootloader will revert to its default menu timeout.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>

2
shell-completion/bash/bootctl
View File

@ -57,7 +57,7 @@ _bootctl() {
local -A VERBS=(
# systemd-efi-options takes an argument, but it is free-form, so we cannot complete it
[STANDALONE]='help status install update remove is-installed random-seed systemd-efi-options list'
[STANDALONE]='help status install update remove is-installed random-seed systemd-efi-options list set-timeout set-timeout-oneshot'
[BOOTENTRY]='set-default set-oneshot'
[BOOLEAN]='reboot-to-firmware'
)

2
shell-completion/zsh/_bootctl
View File

@ -46,6 +46,8 @@ _bootctl_reboot-to-firmware() {
"list:List boot loader entries"
"set-default:Set the default boot loader entry"
"set-oneshot:Set the default boot loader entry only for the next boot"
"set-timeout:Set the menu timeout"
"set-timeout-oneshot:Set the menu timeout for the next boot only"
)
if (( CURRENT == 1 )); then
_describe -t commands 'bootctl command' _bootctl_cmds || compadd "$@"

71
src/boot/bootctl.c
View File

@ -1100,6 +1100,9 @@ static int help(int argc, char *argv[], void *userdata) {
" 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"
" set-timeout SECONDS Set the menu timeout\n"
" set-timeout-oneshot SECONDS\n"
" Set the menu timeout for the 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"
@ -1774,6 +1777,37 @@ static int verb_is_installed(int argc, char *argv[], void *userdata) {
return EXIT_SUCCESS;
}
static int parse_timeout(const char *arg1, char16_t **ret_timeout, size_t *ret_timeout_size) {
char utf8[DECIMAL_STR_MAX(usec_t)];
char16_t *encoded;
usec_t timeout;
int r;
assert(arg1);
assert(ret_timeout);
assert(ret_timeout_size);
if (streq(arg1, "menu-force"))
timeout = USEC_INFINITY;
else if (streq(arg1, "menu-hidden"))
timeout = 0;
else {
r = parse_time(arg1, &timeout, USEC_PER_SEC);
if (r < 0)
return log_error_errno(r, "Failed to parse timeout '%s': %m", arg1);
if (timeout != USEC_INFINITY && timeout > UINT32_MAX * USEC_PER_SEC)
log_warning("Timeout is too long and will be treated as 'menu-force' instead.");
}
xsprintf(utf8, USEC_FMT, MIN(timeout / USEC_PER_SEC, UINT32_MAX));
encoded = utf8_to_utf16(utf8, strlen(utf8));
if (!encoded)
return log_oom();
*ret_timeout = encoded;
*ret_timeout_size = char16_strlen(encoded) * 2 + 2;
return 0;
}
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")) {
@ -1799,7 +1833,7 @@ static int parse_loader_entry_target_arg(const char *arg1, char16_t **ret_target
return 0;
}
static int verb_set_default(int argc, char *argv[], void *userdata) {
static int verb_set_efivar(int argc, char *argv[], void *userdata) {
int r;
if (!is_efi_boot())
@ -1822,24 +1856,39 @@ static int verb_set_default(int argc, char *argv[], void *userdata) {
if (!arg_touch_variables)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"'%s' operation cannot be combined with --touch-variables=no.",
"'%s' operation cannot be combined with --no-variables.",
argv[0]);
const char *variable = streq(argv[0], "set-default") ?
EFI_LOADER_VARIABLE(LoaderEntryDefault) : EFI_LOADER_VARIABLE(LoaderEntryOneShot);
const char *variable;
int (* arg_parser)(const char *, char16_t **, size_t *);
if (streq(argv[0], "set-default")) {
variable = EFI_LOADER_VARIABLE(LoaderEntryDefault);
arg_parser = parse_loader_entry_target_arg;
} else if (streq(argv[0], "set-oneshot")) {
variable = EFI_LOADER_VARIABLE(LoaderEntryOneShot);
arg_parser = parse_loader_entry_target_arg;
} else if (streq(argv[0], "set-timeout")) {
variable = EFI_LOADER_VARIABLE(LoaderConfigTimeout);
arg_parser = parse_timeout;
} else if (streq(argv[0], "set-timeout-oneshot")) {
variable = EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot);
arg_parser = parse_timeout;
} else
assert_not_reached();
if (isempty(argv[1])) {
r = efi_set_variable(variable, NULL, 0);
if (r < 0 && r != -ENOENT)
return log_error_errno(r, "Failed to remove EFI variable '%s': %m", variable);
} else {
_cleanup_free_ char16_t *target = NULL;
size_t target_size = 0;
_cleanup_free_ char16_t *value = NULL;
size_t value_size = 0;
r = parse_loader_entry_target_arg(argv[1], &target, &target_size);
r = arg_parser(argv[1], &value, &value_size);
if (r < 0)
return r;
r = efi_set_variable(variable, target, target_size);
r = efi_set_variable(variable, value, value_size);
if (r < 0)
return log_error_errno(r, "Failed to update EFI variable '%s': %m", variable);
}
@ -1944,8 +1993,10 @@ static int bootctl_main(int argc, char *argv[]) {
{ "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 },
{ "set-default", 2, 2, 0, verb_set_efivar },
{ "set-oneshot", 2, 2, 0, verb_set_efivar },
{ "set-timeout", 2, 2, 0, verb_set_efivar },
{ "set-timeout-oneshot", 2, 2, 0, verb_set_efivar },
{ "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 },