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boot: make .call() method of BootEntry more complete

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Let's pass some context information to the .call() methods so that it's
sufficient to implement the handlers for all entry types with them.

(This commit doesn't port the various entry types over though, that
happens in later commits.)
This commit is contained in:
Lennart Poettering 2025-02-25 12:12:56 +01:00
parent 95086da39f
commit 4801e16401
1 changed files with 21 additions and 18 deletions
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39
src/boot/boot.c
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@ -70,7 +70,7 @@ typedef enum LoaderType {
/* Which loader types shall be considered for automatic selection */
#define LOADER_TYPE_MAY_AUTO_SELECT(t) IN_SET(t, LOADER_EFI, LOADER_LINUX, LOADER_UKI, LOADER_UKI_URL, LOADER_TYPE2_UKI)
typedef struct {
typedef struct BootEntry {
char16_t *id; /* The unique identifier for this entry (typically the filename of the file defining the entry, possibly suffixed with a profile id) */
char16_t *id_without_profile; /* same, but without any profile id suffixed */
char16_t *title_show; /* The string to actually display (this is made unique before showing) */
@ -87,7 +87,7 @@ typedef struct {
bool options_implied; /* If true, these options are implied if we invoke the PE binary without any parameters (as in: UKI). If false we must specify these options explicitly. */
char16_t **initrd;
char16_t key;
EFI_STATUS (*call)(void);
EFI_STATUS (*call)(const struct BootEntry *entry, EFI_FILE *root_dir, EFI_HANDLE parent_image);
int tries_done;
int tries_left;
char16_t *path;
@ -419,24 +419,24 @@ static EFI_STATUS set_reboot_into_firmware(void) {
return EFI_SUCCESS;
}
_noreturn_ static EFI_STATUS poweroff_system(void) {
_noreturn_ static EFI_STATUS call_poweroff_system(const BootEntry *entry, EFI_FILE *root_dir, EFI_HANDLE parent_image) {
RT->ResetSystem(EfiResetShutdown, EFI_SUCCESS, 0, NULL);
assert_not_reached();
}
_noreturn_ static EFI_STATUS reboot_system(void) {
_noreturn_ static EFI_STATUS call_reboot_system(const BootEntry *entry, EFI_FILE *root_dir, EFI_HANDLE parent_image) {
RT->ResetSystem(EfiResetCold, EFI_SUCCESS, 0, NULL);
assert_not_reached();
}
static EFI_STATUS reboot_into_firmware(void) {
static EFI_STATUS call_reboot_into_firmware(const BootEntry *entry, EFI_FILE *root_dir, EFI_HANDLE parent_image) {
EFI_STATUS err;
err = set_reboot_into_firmware();
if (err != EFI_SUCCESS)
return err;
return reboot_system();
return call_reboot_system(entry, root_dir, parent_image);
}
static bool menu_run(
@ -929,10 +929,10 @@ static bool menu_run(
case ACTION_CONTINUE:
assert_not_reached();
case ACTION_POWEROFF:
poweroff_system();
(void) call_poweroff_system(/* entry= */ NULL, /* root_dir= */ NULL, /* parent_image= */ NULL);
case ACTION_REBOOT:
case ACTION_FIRMWARE_SETUP:
reboot_system();
(void) call_reboot_system(/* entry= */ NULL, /* root_dir= */ NULL, /* parent_image= */ NULL);
case ACTION_RUN:
case ACTION_QUIT:
break;
@ -1894,11 +1894,13 @@ static void config_add_entry_osx(Config *config) {
}
#if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || defined(__aarch64__)
static EFI_STATUS boot_windows_bitlocker(void) {
static EFI_STATUS call_boot_windows_bitlocker(const BootEntry *entry, EFI_FILE *root_dir, EFI_HANDLE parent_image) {
_cleanup_free_ EFI_HANDLE *handles = NULL;
size_t n_handles;
EFI_STATUS err;
assert(entry);
// FIXME: Experimental for now. Should be generalized, and become a per-entry option that can be
// enabled independently of BitLocker, and without a BootXXXX entry pre-existing.
@ -2000,7 +2002,7 @@ static void config_add_entry_windows(Config *config, EFI_HANDLE *device, EFI_FIL
u"\\EFI\\Microsoft\\Boot\\bootmgfw.efi");
if (config->reboot_for_bitlocker)
e->call = boot_windows_bitlocker;
e->call = call_boot_windows_bitlocker;
#endif
}
@ -2458,8 +2460,9 @@ static EFI_STATUS expand_path(
}
static EFI_STATUS image_start(
EFI_HANDLE parent_image,
const BootEntry *entry) {
const BootEntry *entry,
EFI_FILE *root,
EFI_HANDLE parent_image) {
_cleanup_(devicetree_cleanup) struct devicetree_state dtstate = {};
_cleanup_(unload_imagep) EFI_HANDLE image = NULL;
@ -2469,7 +2472,7 @@ static EFI_STATUS image_start(
/* If this loader entry has a special way to boot, try that first. */
if (entry->call)
(void) entry->call();
(void) entry->call(entry, root, parent_image);
_cleanup_file_close_ EFI_FILE *image_root = NULL;
_cleanup_free_ EFI_DEVICE_PATH *path = NULL;
@ -2805,7 +2808,7 @@ static void config_load_all_entries(
*entry = (BootEntry) {
.id = xstrdup16(u"auto-reboot-to-firmware-setup"),
.title = xstrdup16(u"Reboot Into Firmware Interface"),
.call = reboot_into_firmware,
.call = call_reboot_into_firmware,
.tries_done = -1,
.tries_left = -1,
};
@ -2817,7 +2820,7 @@ static void config_load_all_entries(
*entry = (BootEntry) {
.id = xstrdup16(u"auto-poweroff"),
.title = xstrdup16(u"Power Off The System"),
.call = poweroff_system,
.call = call_poweroff_system,
.tries_done = -1,
.tries_left = -1,
};
@ -2829,7 +2832,7 @@ static void config_load_all_entries(
*entry = (BootEntry) {
.id = xstrdup16(u"auto-reboot"),
.title = xstrdup16(u"Reboot The System"),
.call = reboot_system,
.call = call_reboot_system,
.tries_done = -1,
.tries_left = -1,
};
@ -2949,7 +2952,7 @@ static EFI_STATUS run(EFI_HANDLE image) {
/* Run special entry like "reboot" now. Those that have a loader
* will be handled by image_start() instead. */
if (entry->call && !entry->loader) {
entry->call();
entry->call(entry, root_dir, image);
continue;
}
@ -2959,7 +2962,7 @@ static EFI_STATUS run(EFI_HANDLE image) {
/* Optionally, read a random seed off the ESP and pass it to the OS */
(void) process_random_seed(root_dir);
err = image_start(image, entry);
err = image_start(entry, root_dir, image);
if (err != EFI_SUCCESS)
return err;