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-rw-r--r--src/boot/efi/boot.c2539
1 files changed, 2539 insertions, 0 deletions
diff --git a/src/boot/efi/boot.c b/src/boot/efi/boot.c
new file mode 100644
index 0000000..938e564
--- /dev/null
+++ b/src/boot/efi/boot.c
@@ -0,0 +1,2539 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <efi.h>
+#include <efigpt.h>
+#include <efilib.h>
+
+#include "console.h"
+#include "crc32.h"
+#include "disk.h"
+#include "graphics.h"
+#include "linux.h"
+#include "loader-features.h"
+#include "measure.h"
+#include "pe.h"
+#include "random-seed.h"
+#include "shim.h"
+#include "util.h"
+
+#ifndef EFI_OS_INDICATIONS_BOOT_TO_FW_UI
+#define EFI_OS_INDICATIONS_BOOT_TO_FW_UI 0x0000000000000001ULL
+#endif
+
+/* magic string to find in the binary image */
+static const char __attribute__((used)) magic[] = "#### LoaderInfo: systemd-boot " GIT_VERSION " ####";
+
+static const EFI_GUID global_guid = EFI_GLOBAL_VARIABLE;
+
+enum loader_type {
+ LOADER_UNDEFINED,
+ LOADER_EFI,
+ LOADER_LINUX,
+};
+
+typedef struct {
+ CHAR16 *id; /* The unique identifier for this entry */
+ CHAR16 *title_show;
+ CHAR16 *title;
+ CHAR16 *version;
+ CHAR16 *machine_id;
+ EFI_HANDLE *device;
+ enum loader_type type;
+ CHAR16 *loader;
+ CHAR16 *options;
+ CHAR16 key;
+ EFI_STATUS (*call)(VOID);
+ BOOLEAN no_autoselect;
+ BOOLEAN non_unique;
+ UINTN tries_done;
+ UINTN tries_left;
+ CHAR16 *path;
+ CHAR16 *current_name;
+ CHAR16 *next_name;
+} ConfigEntry;
+
+typedef struct {
+ ConfigEntry **entries;
+ UINTN entry_count;
+ INTN idx_default;
+ INTN idx_default_efivar;
+ UINTN timeout_sec;
+ UINTN timeout_sec_config;
+ INTN timeout_sec_efivar;
+ CHAR16 *entry_default_pattern;
+ CHAR16 *entry_oneshot;
+ CHAR16 *options_edit;
+ BOOLEAN editor;
+ BOOLEAN auto_entries;
+ BOOLEAN auto_firmware;
+ BOOLEAN force_menu;
+ UINTN console_mode;
+ enum console_mode_change_type console_mode_change;
+ RandomSeedMode random_seed_mode;
+} Config;
+
+static VOID cursor_left(UINTN *cursor, UINTN *first) {
+ if ((*cursor) > 0)
+ (*cursor)--;
+ else if ((*first) > 0)
+ (*first)--;
+}
+
+static VOID cursor_right(
+ UINTN *cursor,
+ UINTN *first,
+ UINTN x_max,
+ UINTN len) {
+
+ if ((*cursor)+1 < x_max)
+ (*cursor)++;
+ else if ((*first) + (*cursor) < len)
+ (*first)++;
+}
+
+static BOOLEAN line_edit(
+ CHAR16 *line_in,
+ CHAR16 **line_out,
+ UINTN x_max,
+ UINTN y_pos) {
+
+ _cleanup_freepool_ CHAR16 *line = NULL, *print = NULL;
+ UINTN size, len, first, cursor, clear;
+ BOOLEAN exit, enter;
+
+ if (!line_in)
+ line_in = L"";
+ size = StrLen(line_in) + 1024;
+ line = AllocatePool(size * sizeof(CHAR16));
+ StrCpy(line, line_in);
+ len = StrLen(line);
+ print = AllocatePool((x_max+1) * sizeof(CHAR16));
+
+ uefi_call_wrapper(ST->ConOut->EnableCursor, 2, ST->ConOut, TRUE);
+
+ first = 0;
+ cursor = 0;
+ clear = 0;
+ enter = FALSE;
+ exit = FALSE;
+ while (!exit) {
+ EFI_STATUS err;
+ UINT64 key;
+ UINTN i;
+
+ i = len - first;
+ if (i >= x_max-1)
+ i = x_max-1;
+ CopyMem(print, line + first, i * sizeof(CHAR16));
+ while (clear > 0 && i < x_max-1) {
+ clear--;
+ print[i++] = ' ';
+ }
+ print[i] = '\0';
+
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_pos);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, print);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
+
+ err = console_key_read(&key, TRUE);
+ if (EFI_ERROR(err))
+ continue;
+
+ switch (key) {
+ case KEYPRESS(0, SCAN_ESC, 0):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'c'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'g'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('c')):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('g')):
+ exit = TRUE;
+ break;
+
+ case KEYPRESS(0, SCAN_HOME, 0):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'a'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('a')):
+ /* beginning-of-line */
+ cursor = 0;
+ first = 0;
+ continue;
+
+ case KEYPRESS(0, SCAN_END, 0):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'e'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('e')):
+ /* end-of-line */
+ cursor = len - first;
+ if (cursor+1 >= x_max) {
+ cursor = x_max-1;
+ first = len - (x_max-1);
+ }
+ continue;
+
+ case KEYPRESS(0, SCAN_DOWN, 0):
+ case KEYPRESS(EFI_ALT_PRESSED, 0, 'f'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, SCAN_RIGHT, 0):
+ /* forward-word */
+ while (line[first + cursor] == ' ')
+ cursor_right(&cursor, &first, x_max, len);
+ while (line[first + cursor] && line[first + cursor] != ' ')
+ cursor_right(&cursor, &first, x_max, len);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
+ continue;
+
+ case KEYPRESS(0, SCAN_UP, 0):
+ case KEYPRESS(EFI_ALT_PRESSED, 0, 'b'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, SCAN_LEFT, 0):
+ /* backward-word */
+ if ((first + cursor) > 0 && line[first + cursor-1] == ' ') {
+ cursor_left(&cursor, &first);
+ while ((first + cursor) > 0 && line[first + cursor] == ' ')
+ cursor_left(&cursor, &first);
+ }
+ while ((first + cursor) > 0 && line[first + cursor-1] != ' ')
+ cursor_left(&cursor, &first);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
+ continue;
+
+ case KEYPRESS(0, SCAN_RIGHT, 0):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'f'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('f')):
+ /* forward-char */
+ if (first + cursor == len)
+ continue;
+ cursor_right(&cursor, &first, x_max, len);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
+ continue;
+
+ case KEYPRESS(0, SCAN_LEFT, 0):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'b'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('b')):
+ /* backward-char */
+ cursor_left(&cursor, &first);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
+ continue;
+
+ case KEYPRESS(EFI_ALT_PRESSED, 0, 'd'):
+ /* kill-word */
+ clear = 0;
+ for (i = first + cursor; i < len && line[i] == ' '; i++)
+ clear++;
+ for (; i < len && line[i] != ' '; i++)
+ clear++;
+
+ for (i = first + cursor; i + clear < len; i++)
+ line[i] = line[i + clear];
+ len -= clear;
+ line[len] = '\0';
+ continue;
+
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'w'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('w')):
+ case KEYPRESS(EFI_ALT_PRESSED, 0, CHAR_BACKSPACE):
+ /* backward-kill-word */
+ clear = 0;
+ if ((first + cursor) > 0 && line[first + cursor-1] == ' ') {
+ cursor_left(&cursor, &first);
+ clear++;
+ while ((first + cursor) > 0 && line[first + cursor] == ' ') {
+ cursor_left(&cursor, &first);
+ clear++;
+ }
+ }
+ while ((first + cursor) > 0 && line[first + cursor-1] != ' ') {
+ cursor_left(&cursor, &first);
+ clear++;
+ }
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
+
+ for (i = first + cursor; i + clear < len; i++)
+ line[i] = line[i + clear];
+ len -= clear;
+ line[len] = '\0';
+ continue;
+
+ case KEYPRESS(0, SCAN_DELETE, 0):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'd'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('d')):
+ if (len == 0)
+ continue;
+ if (first + cursor == len)
+ continue;
+ for (i = first + cursor; i < len; i++)
+ line[i] = line[i+1];
+ clear = 1;
+ len--;
+ continue;
+
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'k'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('k')):
+ /* kill-line */
+ line[first + cursor] = '\0';
+ clear = len - (first + cursor);
+ len = first + cursor;
+ continue;
+
+ case KEYPRESS(0, 0, CHAR_LINEFEED):
+ case KEYPRESS(0, 0, CHAR_CARRIAGE_RETURN):
+ case KEYPRESS(0, CHAR_CARRIAGE_RETURN, 0): /* EZpad Mini 4s firmware sends malformed events */
+ case KEYPRESS(0, CHAR_CARRIAGE_RETURN, CHAR_CARRIAGE_RETURN): /* Teclast X98+ II firmware sends malformed events */
+ if (StrCmp(line, line_in) != 0)
+ *line_out = TAKE_PTR(line);
+ enter = TRUE;
+ exit = TRUE;
+ break;
+
+ case KEYPRESS(0, 0, CHAR_BACKSPACE):
+ if (len == 0)
+ continue;
+ if (first == 0 && cursor == 0)
+ continue;
+ for (i = first + cursor-1; i < len; i++)
+ line[i] = line[i+1];
+ clear = 1;
+ len--;
+ if (cursor > 0)
+ cursor--;
+ if (cursor > 0 || first == 0)
+ continue;
+ /* show full line if it fits */
+ if (len < x_max) {
+ cursor = first;
+ first = 0;
+ continue;
+ }
+ /* jump left to see what we delete */
+ if (first > 10) {
+ first -= 10;
+ cursor = 10;
+ } else {
+ cursor = first;
+ first = 0;
+ }
+ continue;
+
+ case KEYPRESS(0, 0, ' ') ... KEYPRESS(0, 0, '~'):
+ case KEYPRESS(0, 0, 0x80) ... KEYPRESS(0, 0, 0xffff):
+ if (len+1 == size)
+ continue;
+ for (i = len; i > first + cursor; i--)
+ line[i] = line[i-1];
+ line[first + cursor] = KEYCHAR(key);
+ len++;
+ line[len] = '\0';
+ if (cursor+1 < x_max)
+ cursor++;
+ else if (first + cursor < len)
+ first++;
+ continue;
+ }
+ }
+
+ uefi_call_wrapper(ST->ConOut->EnableCursor, 2, ST->ConOut, FALSE);
+ return enter;
+}
+
+static UINTN entry_lookup_key(Config *config, UINTN start, CHAR16 key) {
+ UINTN i;
+
+ if (key == 0)
+ return -1;
+
+ /* select entry by number key */
+ if (key >= '1' && key <= '9') {
+ i = key - '0';
+ if (i > config->entry_count)
+ i = config->entry_count;
+ return i-1;
+ }
+
+ /* find matching key in config entries */
+ for (i = start; i < config->entry_count; i++)
+ if (config->entries[i]->key == key)
+ return i;
+
+ for (i = 0; i < start; i++)
+ if (config->entries[i]->key == key)
+ return i;
+
+ return -1;
+}
+
+static VOID print_status(Config *config, CHAR16 *loaded_image_path) {
+ UINT64 key;
+ UINTN i;
+ _cleanup_freepool_ CHAR8 *bootvar = NULL, *modevar = NULL, *indvar = NULL;
+ _cleanup_freepool_ CHAR16 *partstr = NULL, *defaultstr = NULL;
+ UINTN x, y, size;
+
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
+ uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
+
+ Print(L"systemd-boot version: " GIT_VERSION "\n");
+ Print(L"architecture: " EFI_MACHINE_TYPE_NAME "\n");
+ Print(L"loaded image: %s\n", loaded_image_path);
+ Print(L"UEFI specification: %d.%02d\n", ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff);
+ Print(L"firmware vendor: %s\n", ST->FirmwareVendor);
+ Print(L"firmware version: %d.%02d\n", ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
+
+ if (uefi_call_wrapper(ST->ConOut->QueryMode, 4, ST->ConOut, ST->ConOut->Mode->Mode, &x, &y) == EFI_SUCCESS)
+ Print(L"console size: %d x %d\n", x, y);
+
+ if (efivar_get_raw(&global_guid, L"SecureBoot", &bootvar, &size) == EFI_SUCCESS)
+ Print(L"SecureBoot: %s\n", yes_no(*bootvar > 0));
+
+ if (efivar_get_raw(&global_guid, L"SetupMode", &modevar, &size) == EFI_SUCCESS)
+ Print(L"SetupMode: %s\n", *modevar > 0 ? L"setup" : L"user");
+
+ if (shim_loaded())
+ Print(L"Shim: present\n");
+
+ if (efivar_get_raw(&global_guid, L"OsIndicationsSupported", &indvar, &size) == EFI_SUCCESS)
+ Print(L"OsIndicationsSupported: %d\n", (UINT64)*indvar);
+
+ Print(L"\n--- press key ---\n\n");
+ console_key_read(&key, TRUE);
+
+ Print(L"timeout: %u\n", config->timeout_sec);
+ if (config->timeout_sec_efivar >= 0)
+ Print(L"timeout (EFI var): %d\n", config->timeout_sec_efivar);
+ Print(L"timeout (config): %u\n", config->timeout_sec_config);
+ if (config->entry_default_pattern)
+ Print(L"default pattern: '%s'\n", config->entry_default_pattern);
+ Print(L"editor: %s\n", yes_no(config->editor));
+ Print(L"auto-entries: %s\n", yes_no(config->auto_entries));
+ Print(L"auto-firmware: %s\n", yes_no(config->auto_firmware));
+
+ switch (config->random_seed_mode) {
+ case RANDOM_SEED_OFF:
+ Print(L"random-seed-mode: off\n");
+ break;
+ case RANDOM_SEED_WITH_SYSTEM_TOKEN:
+ Print(L"random-seed-mode: with-system-token\n");
+ break;
+ case RANDOM_SEED_ALWAYS:
+ Print(L"random-seed-mode: always\n");
+ break;
+ default:
+ ;
+ }
+
+ Print(L"\n");
+
+ Print(L"config entry count: %d\n", config->entry_count);
+ Print(L"entry selected idx: %d\n", config->idx_default);
+ if (config->idx_default_efivar >= 0)
+ Print(L"entry EFI var idx: %d\n", config->idx_default_efivar);
+ Print(L"\n");
+
+ if (efivar_get_int(L"LoaderConfigTimeout", &i) == EFI_SUCCESS)
+ Print(L"LoaderConfigTimeout: %u\n", i);
+
+ if (config->entry_oneshot)
+ Print(L"LoaderEntryOneShot: %s\n", config->entry_oneshot);
+ if (efivar_get(L"LoaderDevicePartUUID", &partstr) == EFI_SUCCESS)
+ Print(L"LoaderDevicePartUUID: %s\n", partstr);
+ if (efivar_get(L"LoaderEntryDefault", &defaultstr) == EFI_SUCCESS)
+ Print(L"LoaderEntryDefault: %s\n", defaultstr);
+
+ Print(L"\n--- press key ---\n\n");
+ console_key_read(&key, TRUE);
+
+ for (i = 0; i < config->entry_count; i++) {
+ ConfigEntry *entry;
+
+ if (key == KEYPRESS(0, SCAN_ESC, 0) || key == KEYPRESS(0, 0, 'q'))
+ break;
+
+ entry = config->entries[i];
+ Print(L"config entry: %d/%d\n", i+1, config->entry_count);
+ if (entry->id)
+ Print(L"id '%s'\n", entry->id);
+ Print(L"title show '%s'\n", entry->title_show);
+ if (entry->title)
+ Print(L"title '%s'\n", entry->title);
+ if (entry->version)
+ Print(L"version '%s'\n", entry->version);
+ if (entry->machine_id)
+ Print(L"machine-id '%s'\n", entry->machine_id);
+ if (entry->device) {
+ EFI_DEVICE_PATH *device_path;
+
+ device_path = DevicePathFromHandle(entry->device);
+ if (device_path) {
+ _cleanup_freepool_ CHAR16 *str;
+
+ str = DevicePathToStr(device_path);
+ Print(L"device handle '%s'\n", str);
+ }
+ }
+ if (entry->loader)
+ Print(L"loader '%s'\n", entry->loader);
+ if (entry->options)
+ Print(L"options '%s'\n", entry->options);
+ Print(L"auto-select %s\n", yes_no(!entry->no_autoselect));
+ if (entry->call)
+ Print(L"internal call yes\n");
+
+ if (entry->tries_left != (UINTN) -1)
+ Print(L"counting boots yes\n"
+ "tries done %u\n"
+ "tries left %u\n"
+ "current path %s\\%s\n"
+ "next path %s\\%s\n",
+ entry->tries_done,
+ entry->tries_left,
+ entry->path, entry->current_name,
+ entry->path, entry->next_name);
+
+ Print(L"\n--- press key ---\n\n");
+ console_key_read(&key, TRUE);
+ }
+
+ uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
+}
+
+static BOOLEAN menu_run(
+ Config *config,
+ ConfigEntry **chosen_entry,
+ CHAR16 *loaded_image_path) {
+
+ EFI_STATUS err;
+ UINTN visible_max;
+ UINTN idx_highlight;
+ UINTN idx_highlight_prev;
+ UINTN idx_first;
+ UINTN idx_last;
+ BOOLEAN refresh;
+ BOOLEAN highlight;
+ UINTN i;
+ UINTN line_width;
+ CHAR16 **lines;
+ UINTN x_start;
+ UINTN y_start;
+ UINTN x_max;
+ UINTN y_max;
+ CHAR16 *status;
+ CHAR16 *clearline;
+ INTN timeout_remain;
+ INT16 idx;
+ BOOLEAN exit = FALSE;
+ BOOLEAN run = TRUE;
+ BOOLEAN wait = FALSE;
+
+ graphics_mode(FALSE);
+ uefi_call_wrapper(ST->ConIn->Reset, 2, ST->ConIn, FALSE);
+ uefi_call_wrapper(ST->ConOut->EnableCursor, 2, ST->ConOut, FALSE);
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
+
+ /* draw a single character to make ClearScreen work on some firmware */
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L" ");
+
+ if (config->console_mode_change != CONSOLE_MODE_KEEP) {
+ err = console_set_mode(&config->console_mode, config->console_mode_change);
+ if (EFI_ERROR(err)) {
+ uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
+ Print(L"Error switching console mode to %ld: %r.\r", (UINT64)config->console_mode, err);
+ }
+ } else
+ uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
+
+ err = uefi_call_wrapper(ST->ConOut->QueryMode, 4, ST->ConOut, ST->ConOut->Mode->Mode, &x_max, &y_max);
+ if (EFI_ERROR(err)) {
+ x_max = 80;
+ y_max = 25;
+ }
+
+ /* we check 10 times per second for a keystroke */
+ if (config->timeout_sec > 0)
+ timeout_remain = config->timeout_sec * 10;
+ else
+ timeout_remain = -1;
+
+ idx_highlight = config->idx_default;
+ idx_highlight_prev = 0;
+
+ visible_max = y_max - 2;
+
+ if ((UINTN)config->idx_default >= visible_max)
+ idx_first = config->idx_default-1;
+ else
+ idx_first = 0;
+
+ idx_last = idx_first + visible_max-1;
+
+ refresh = TRUE;
+ highlight = FALSE;
+
+ /* length of the longest entry */
+ line_width = 5;
+ for (i = 0; i < config->entry_count; i++) {
+ UINTN entry_len;
+
+ entry_len = StrLen(config->entries[i]->title_show);
+ if (line_width < entry_len)
+ line_width = entry_len;
+ }
+ if (line_width > x_max-6)
+ line_width = x_max-6;
+
+ /* offsets to center the entries on the screen */
+ x_start = (x_max - (line_width)) / 2;
+ if (config->entry_count < visible_max)
+ y_start = ((visible_max - config->entry_count) / 2) + 1;
+ else
+ y_start = 0;
+
+ /* menu entries title lines */
+ lines = AllocatePool(sizeof(CHAR16 *) * config->entry_count);
+ for (i = 0; i < config->entry_count; i++) {
+ UINTN j, k;
+
+ lines[i] = AllocatePool(((x_max+1) * sizeof(CHAR16)));
+ for (j = 0; j < x_start; j++)
+ lines[i][j] = ' ';
+
+ for (k = 0; config->entries[i]->title_show[k] != '\0' && j < x_max; j++, k++)
+ lines[i][j] = config->entries[i]->title_show[k];
+
+ for (; j < x_max; j++)
+ lines[i][j] = ' ';
+ lines[i][x_max] = '\0';
+ }
+
+ status = NULL;
+ clearline = AllocatePool((x_max+1) * sizeof(CHAR16));
+ for (i = 0; i < x_max; i++)
+ clearline[i] = ' ';
+ clearline[i] = 0;
+
+ while (!exit) {
+ UINT64 key;
+
+ if (refresh) {
+ for (i = 0; i < config->entry_count; i++) {
+ if (i < idx_first || i > idx_last)
+ continue;
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_start + i - idx_first);
+ if (i == idx_highlight)
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut,
+ EFI_BLACK|EFI_BACKGROUND_LIGHTGRAY);
+ else
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut,
+ EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, lines[i]);
+ if ((INTN)i == config->idx_default_efivar) {
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, x_start-3, y_start + i - idx_first);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L"=>");
+ }
+ }
+ refresh = FALSE;
+ } else if (highlight) {
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_start + idx_highlight_prev - idx_first);
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, lines[idx_highlight_prev]);
+ if ((INTN)idx_highlight_prev == config->idx_default_efivar) {
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, x_start-3, y_start + idx_highlight_prev - idx_first);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L"=>");
+ }
+
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_start + idx_highlight - idx_first);
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_BLACK|EFI_BACKGROUND_LIGHTGRAY);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, lines[idx_highlight]);
+ if ((INTN)idx_highlight == config->idx_default_efivar) {
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, x_start-3, y_start + idx_highlight - idx_first);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L"=>");
+ }
+ highlight = FALSE;
+ }
+
+ if (timeout_remain > 0) {
+ FreePool(status);
+ status = PoolPrint(L"Boot in %d sec.", (timeout_remain + 5) / 10);
+ }
+
+ /* print status at last line of screen */
+ if (status) {
+ UINTN len;
+ UINTN x;
+
+ /* center line */
+ len = StrLen(status);
+ if (len < x_max)
+ x = (x_max - len) / 2;
+ else
+ x = 0;
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline + (x_max - x));
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, status);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1 + x + len);
+ }
+
+ err = console_key_read(&key, wait);
+ if (EFI_ERROR(err)) {
+ /* timeout reached */
+ if (timeout_remain == 0) {
+ exit = TRUE;
+ break;
+ }
+
+ /* sleep and update status */
+ if (timeout_remain > 0) {
+ uefi_call_wrapper(BS->Stall, 1, 100 * 1000);
+ timeout_remain--;
+ continue;
+ }
+
+ /* timeout disabled, wait for next key */
+ wait = TRUE;
+ continue;
+ }
+
+ timeout_remain = -1;
+
+ /* clear status after keystroke */
+ if (status) {
+ FreePool(status);
+ status = NULL;
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1);
+ }
+
+ idx_highlight_prev = idx_highlight;
+
+ switch (key) {
+ case KEYPRESS(0, SCAN_UP, 0):
+ case KEYPRESS(0, 0, 'k'):
+ if (idx_highlight > 0)
+ idx_highlight--;
+ break;
+
+ case KEYPRESS(0, SCAN_DOWN, 0):
+ case KEYPRESS(0, 0, 'j'):
+ if (idx_highlight < config->entry_count-1)
+ idx_highlight++;
+ break;
+
+ case KEYPRESS(0, SCAN_HOME, 0):
+ case KEYPRESS(EFI_ALT_PRESSED, 0, '<'):
+ if (idx_highlight > 0) {
+ refresh = TRUE;
+ idx_highlight = 0;
+ }
+ break;
+
+ case KEYPRESS(0, SCAN_END, 0):
+ case KEYPRESS(EFI_ALT_PRESSED, 0, '>'):
+ if (idx_highlight < config->entry_count-1) {
+ refresh = TRUE;
+ idx_highlight = config->entry_count-1;
+ }
+ break;
+
+ case KEYPRESS(0, SCAN_PAGE_UP, 0):
+ if (idx_highlight > visible_max)
+ idx_highlight -= visible_max;
+ else
+ idx_highlight = 0;
+ break;
+
+ case KEYPRESS(0, SCAN_PAGE_DOWN, 0):
+ idx_highlight += visible_max;
+ if (idx_highlight > config->entry_count-1)
+ idx_highlight = config->entry_count-1;
+ break;
+
+ case KEYPRESS(0, 0, CHAR_LINEFEED):
+ case KEYPRESS(0, 0, CHAR_CARRIAGE_RETURN):
+ case KEYPRESS(0, CHAR_CARRIAGE_RETURN, 0): /* EZpad Mini 4s firmware sends malformed events */
+ case KEYPRESS(0, CHAR_CARRIAGE_RETURN, CHAR_CARRIAGE_RETURN): /* Teclast X98+ II firmware sends malformed events */
+ case KEYPRESS(0, SCAN_RIGHT, 0):
+ exit = TRUE;
+ break;
+
+ case KEYPRESS(0, SCAN_F1, 0):
+ case KEYPRESS(0, 0, 'h'):
+ case KEYPRESS(0, 0, '?'):
+ status = StrDuplicate(L"(d)efault, (t/T)timeout, (e)dit, (v)ersion (Q)uit (P)rint (h)elp");
+ break;
+
+ case KEYPRESS(0, 0, 'Q'):
+ exit = TRUE;
+ run = FALSE;
+ break;
+
+ case KEYPRESS(0, 0, 'd'):
+ if (config->idx_default_efivar != (INTN)idx_highlight) {
+ /* store the selected entry in a persistent EFI variable */
+ efivar_set(L"LoaderEntryDefault", config->entries[idx_highlight]->id, TRUE);
+ config->idx_default_efivar = idx_highlight;
+ status = StrDuplicate(L"Default boot entry selected.");
+ } else {
+ /* clear the default entry EFI variable */
+ efivar_set(L"LoaderEntryDefault", NULL, TRUE);
+ config->idx_default_efivar = -1;
+ status = StrDuplicate(L"Default boot entry cleared.");
+ }
+ refresh = TRUE;
+ break;
+
+ case KEYPRESS(0, 0, '-'):
+ case KEYPRESS(0, 0, 'T'):
+ if (config->timeout_sec_efivar > 0) {
+ config->timeout_sec_efivar--;
+ efivar_set_int(L"LoaderConfigTimeout", config->timeout_sec_efivar, TRUE);
+ if (config->timeout_sec_efivar > 0)
+ status = PoolPrint(L"Menu timeout set to %d sec.", config->timeout_sec_efivar);
+ else
+ status = StrDuplicate(L"Menu disabled. Hold down key at bootup to show menu.");
+ } else if (config->timeout_sec_efivar <= 0){
+ config->timeout_sec_efivar = -1;
+ efivar_set(L"LoaderConfigTimeout", NULL, TRUE);
+ if (config->timeout_sec_config > 0)
+ status = PoolPrint(L"Menu timeout of %d sec is defined by configuration file.",
+ config->timeout_sec_config);
+ else
+ status = StrDuplicate(L"Menu disabled. Hold down key at bootup to show menu.");
+ }
+ break;
+
+ case KEYPRESS(0, 0, '+'):
+ case KEYPRESS(0, 0, 't'):
+ if (config->timeout_sec_efivar == -1 && config->timeout_sec_config == 0)
+ config->timeout_sec_efivar++;
+ config->timeout_sec_efivar++;
+ efivar_set_int(L"LoaderConfigTimeout", config->timeout_sec_efivar, TRUE);
+ if (config->timeout_sec_efivar > 0)
+ status = PoolPrint(L"Menu timeout set to %d sec.",
+ config->timeout_sec_efivar);
+ else
+ status = StrDuplicate(L"Menu disabled. Hold down key at bootup to show menu.");
+ break;
+
+ case KEYPRESS(0, 0, 'e'):
+ /* only the options of configured entries can be edited */
+ if (!config->editor || config->entries[idx_highlight]->type == LOADER_UNDEFINED)
+ break;
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1);
+ if (line_edit(config->entries[idx_highlight]->options, &config->options_edit, x_max-1, y_max-1))
+ exit = TRUE;
+ uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
+ uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1);
+ break;
+
+ case KEYPRESS(0, 0, 'v'):
+ status = PoolPrint(L"systemd-boot " GIT_VERSION " (" EFI_MACHINE_TYPE_NAME "), UEFI Specification %d.%02d, Vendor %s %d.%02d",
+ ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff,
+ ST->FirmwareVendor, ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
+ break;
+
+ case KEYPRESS(0, 0, 'P'):
+ print_status(config, loaded_image_path);
+ refresh = TRUE;
+ break;
+
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'l'):
+ case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('l')):
+ refresh = TRUE;
+ break;
+
+ default:
+ /* jump with a hotkey directly to a matching entry */
+ idx = entry_lookup_key(config, idx_highlight+1, KEYCHAR(key));
+ if (idx < 0)
+ break;
+ idx_highlight = idx;
+ refresh = TRUE;
+ }
+
+ if (idx_highlight > idx_last) {
+ idx_last = idx_highlight;
+ idx_first = 1 + idx_highlight - visible_max;
+ refresh = TRUE;
+ } else if (idx_highlight < idx_first) {
+ idx_first = idx_highlight;
+ idx_last = idx_highlight + visible_max-1;
+ refresh = TRUE;
+ }
+
+ if (!refresh && idx_highlight != idx_highlight_prev)
+ highlight = TRUE;
+ }
+
+ *chosen_entry = config->entries[idx_highlight];
+
+ for (i = 0; i < config->entry_count; i++)
+ FreePool(lines[i]);
+ FreePool(lines);
+ FreePool(clearline);
+
+ uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_WHITE|EFI_BACKGROUND_BLACK);
+ uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
+ return run;
+}
+
+static VOID config_add_entry(Config *config, ConfigEntry *entry) {
+ if ((config->entry_count & 15) == 0) {
+ UINTN i;
+
+ i = config->entry_count + 16;
+ if (config->entry_count == 0)
+ config->entries = AllocatePool(sizeof(VOID *) * i);
+ else
+ config->entries = ReallocatePool(config->entries,
+ sizeof(VOID *) * config->entry_count, sizeof(VOID *) * i);
+ }
+ config->entries[config->entry_count++] = entry;
+}
+
+static VOID config_entry_free(ConfigEntry *entry) {
+ if (!entry)
+ return;
+
+ FreePool(entry->id);
+ FreePool(entry->title_show);
+ FreePool(entry->title);
+ FreePool(entry->version);
+ FreePool(entry->machine_id);
+ FreePool(entry->loader);
+ FreePool(entry->options);
+ FreePool(entry->path);
+ FreePool(entry->current_name);
+ FreePool(entry->next_name);
+ FreePool(entry);
+}
+
+static BOOLEAN is_digit(CHAR16 c) {
+ return (c >= '0') && (c <= '9');
+}
+
+static UINTN c_order(CHAR16 c) {
+ if (c == '\0')
+ return 0;
+ if (is_digit(c))
+ return 0;
+ else if ((c >= 'a') && (c <= 'z'))
+ return c;
+ else
+ return c + 0x10000;
+}
+
+static INTN str_verscmp(CHAR16 *s1, CHAR16 *s2) {
+ CHAR16 *os1 = s1;
+ CHAR16 *os2 = s2;
+
+ while (*s1 || *s2) {
+ INTN first;
+
+ while ((*s1 && !is_digit(*s1)) || (*s2 && !is_digit(*s2))) {
+ INTN order;
+
+ order = c_order(*s1) - c_order(*s2);
+ if (order != 0)
+ return order;
+ s1++;
+ s2++;
+ }
+
+ while (*s1 == '0')
+ s1++;
+ while (*s2 == '0')
+ s2++;
+
+ first = 0;
+ while (is_digit(*s1) && is_digit(*s2)) {
+ if (first == 0)
+ first = *s1 - *s2;
+ s1++;
+ s2++;
+ }
+
+ if (is_digit(*s1))
+ return 1;
+ if (is_digit(*s2))
+ return -1;
+
+ if (first != 0)
+ return first;
+ }
+
+ return StrCmp(os1, os2);
+}
+
+static CHAR8 *line_get_key_value(
+ CHAR8 *content,
+ CHAR8 *sep,
+ UINTN *pos,
+ CHAR8 **key_ret,
+ CHAR8 **value_ret) {
+
+ CHAR8 *line;
+ UINTN linelen;
+ CHAR8 *value;
+
+skip:
+ line = content + *pos;
+ if (*line == '\0')
+ return NULL;
+
+ linelen = 0;
+ while (line[linelen] && !strchra((CHAR8 *)"\n\r", line[linelen]))
+ linelen++;
+
+ /* move pos to next line */
+ *pos += linelen;
+ if (content[*pos])
+ (*pos)++;
+
+ /* empty line */
+ if (linelen == 0)
+ goto skip;
+
+ /* terminate line */
+ line[linelen] = '\0';
+
+ /* remove leading whitespace */
+ while (strchra((CHAR8 *)" \t", *line)) {
+ line++;
+ linelen--;
+ }
+
+ /* remove trailing whitespace */
+ while (linelen > 0 && strchra((CHAR8 *)" \t", line[linelen-1]))
+ linelen--;
+ line[linelen] = '\0';
+
+ if (*line == '#')
+ goto skip;
+
+ /* split key/value */
+ value = line;
+ while (*value && !strchra(sep, *value))
+ value++;
+ if (*value == '\0')
+ goto skip;
+ *value = '\0';
+ value++;
+ while (*value && strchra(sep, *value))
+ value++;
+
+ /* unquote */
+ if (value[0] == '"' && line[linelen-1] == '"') {
+ value++;
+ line[linelen-1] = '\0';
+ }
+
+ *key_ret = line;
+ *value_ret = value;
+ return line;
+}
+
+static VOID config_defaults_load_from_file(Config *config, CHAR8 *content) {
+ CHAR8 *line;
+ UINTN pos = 0;
+ CHAR8 *key, *value;
+
+ while ((line = line_get_key_value(content, (CHAR8 *)" \t", &pos, &key, &value))) {
+ if (strcmpa((CHAR8 *)"timeout", key) == 0) {
+ _cleanup_freepool_ CHAR16 *s = NULL;
+
+ s = stra_to_str(value);
+ config->timeout_sec_config = Atoi(s);
+ config->timeout_sec = config->timeout_sec_config;
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"default", key) == 0) {
+ FreePool(config->entry_default_pattern);
+ config->entry_default_pattern = stra_to_str(value);
+ StrLwr(config->entry_default_pattern);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"editor", key) == 0) {
+ BOOLEAN on;
+
+ if (EFI_ERROR(parse_boolean(value, &on)))
+ continue;
+
+ config->editor = on;
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"auto-entries", key) == 0) {
+ BOOLEAN on;
+
+ if (EFI_ERROR(parse_boolean(value, &on)))
+ continue;
+
+ config->auto_entries = on;
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"auto-firmware", key) == 0) {
+ BOOLEAN on;
+
+ if (EFI_ERROR(parse_boolean(value, &on)))
+ continue;
+
+ config->auto_firmware = on;
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"console-mode", key) == 0) {
+ if (strcmpa((CHAR8 *)"auto", value) == 0)
+ config->console_mode_change = CONSOLE_MODE_AUTO;
+ else if (strcmpa((CHAR8 *)"max", value) == 0)
+ config->console_mode_change = CONSOLE_MODE_MAX;
+ else if (strcmpa((CHAR8 *)"keep", value) == 0)
+ config->console_mode_change = CONSOLE_MODE_KEEP;
+ else {
+ _cleanup_freepool_ CHAR16 *s = NULL;
+
+ s = stra_to_str(value);
+ config->console_mode = Atoi(s);
+ config->console_mode_change = CONSOLE_MODE_SET;
+ }
+
+ continue;
+ }
+
+ if (strcmpa((CHAR8*) "random-seed-mode", key) == 0) {
+ if (strcmpa((CHAR8*) "off", value) == 0)
+ config->random_seed_mode = RANDOM_SEED_OFF;
+ else if (strcmpa((CHAR8*) "with-system-token", value) == 0)
+ config->random_seed_mode = RANDOM_SEED_WITH_SYSTEM_TOKEN;
+ else if (strcmpa((CHAR8*) "always", value) == 0)
+ config->random_seed_mode = RANDOM_SEED_ALWAYS;
+ else {
+ BOOLEAN on;
+
+ if (EFI_ERROR(parse_boolean(value, &on)))
+ continue;
+
+ config->random_seed_mode = on ? RANDOM_SEED_ALWAYS : RANDOM_SEED_OFF;
+ }
+ }
+ }
+}
+
+static VOID config_entry_parse_tries(
+ ConfigEntry *entry,
+ CHAR16 *path,
+ CHAR16 *file,
+ CHAR16 *suffix) {
+
+ UINTN left = (UINTN) -1, done = (UINTN) -1, factor = 1, i, next_left, next_done;
+ _cleanup_freepool_ CHAR16 *prefix = NULL;
+
+ /*
+ * Parses a suffix of two counters (one going down, one going up) in the form "+LEFT-DONE" from the end of the
+ * filename (but before the .efi/.conf suffix), where the "-DONE" part is optional and may be left out (in
+ * which case that counter as assumed to be zero, i.e. the missing part is synonymous to "-0").
+ *
+ * Names we grok, and the series they result in:
+ *
+ * foobar+3.efi → foobar+2-1.efi → foobar+1-2.efi → foobar+0-3.efi → STOP!
+ * foobar+4-0.efi → foobar+3-1.efi → foobar+2-2.efi → foobar+1-3.efi → foobar+0-4.efi → STOP!
+ */
+
+ i = StrLen(file);
+
+ /* Chop off any suffix such as ".conf" or ".efi" */
+ if (suffix) {
+ UINTN suffix_length;
+
+ suffix_length = StrLen(suffix);
+ if (i < suffix_length)
+ return;
+
+ i -= suffix_length;
+ }
+
+ /* Go backwards through the string and parse everything we encounter */
+ for (;;) {
+ if (i == 0)
+ return;
+
+ i--;
+
+ switch (file[i]) {
+
+ case '+':
+ if (left == (UINTN) -1) /* didn't read at least one digit for 'left'? */
+ return;
+
+ if (done == (UINTN) -1) /* no 'done' counter? If so, it's equivalent to 0 */
+ done = 0;
+
+ goto good;
+
+ case '-':
+ if (left == (UINTN) -1) /* didn't parse any digit yet? */
+ return;
+
+ if (done != (UINTN) -1) /* already encountered a dash earlier? */
+ return;
+
+ /* So we encountered a dash. This means this counter is of the form +LEFT-DONE. Let's assign
+ * what we already parsed to 'done', and start fresh for the 'left' part. */
+
+ done = left;
+ left = (UINTN) -1;
+ factor = 1;
+ break;
+
+ case '0'...'9': {
+ UINTN new_factor;
+
+ if (left == (UINTN) -1)
+ left = file[i] - '0';
+ else {
+ UINTN new_left, digit;
+
+ digit = file[i] - '0';
+ if (digit > (UINTN) -1 / factor) /* overflow check */
+ return;
+
+ new_left = left + digit * factor;
+ if (new_left < left) /* overflow check */
+ return;
+
+ if (new_left == (UINTN) -1) /* don't allow us to be confused */
+ return;
+ }
+
+ new_factor = factor * 10;
+ if (new_factor < factor) /* overflow check */
+ return;
+
+ factor = new_factor;
+ break;
+ }
+
+ default:
+ return;
+ }
+ }
+
+good:
+ entry->tries_left = left;
+ entry->tries_done = done;
+
+ entry->path = StrDuplicate(path);
+ entry->current_name = StrDuplicate(file);
+
+ next_left = left <= 0 ? 0 : left - 1;
+ next_done = done >= (UINTN) -2 ? (UINTN) -2 : done + 1;
+
+ prefix = StrDuplicate(file);
+ prefix[i] = 0;
+
+ entry->next_name = PoolPrint(L"%s+%u-%u%s", prefix, next_left, next_done, suffix ?: L"");
+}
+
+static VOID config_entry_bump_counters(
+ ConfigEntry *entry,
+ EFI_FILE_HANDLE root_dir) {
+
+ _cleanup_freepool_ CHAR16* old_path = NULL, *new_path = NULL;
+ _cleanup_(FileHandleClosep) EFI_FILE_HANDLE handle = NULL;
+ static EFI_GUID EfiFileInfoGuid = EFI_FILE_INFO_ID;
+ _cleanup_freepool_ EFI_FILE_INFO *file_info = NULL;
+ UINTN file_info_size, a, b;
+ EFI_STATUS r;
+
+ if (entry->tries_left == (UINTN) -1)
+ return;
+
+ if (!entry->path || !entry->current_name || !entry->next_name)
+ return;
+
+ old_path = PoolPrint(L"%s\\%s", entry->path, entry->current_name);
+
+ r = uefi_call_wrapper(root_dir->Open, 5, root_dir, &handle, old_path, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE, 0ULL);
+ if (EFI_ERROR(r))
+ return;
+
+ a = StrLen(entry->current_name);
+ b = StrLen(entry->next_name);
+
+ file_info_size = OFFSETOF(EFI_FILE_INFO, FileName) + (a > b ? a : b) + 1;
+
+ for (;;) {
+ file_info = AllocatePool(file_info_size);
+
+ r = uefi_call_wrapper(handle->GetInfo, 4, handle, &EfiFileInfoGuid, &file_info_size, file_info);
+ if (!EFI_ERROR(r))
+ break;
+
+ if (r != EFI_BUFFER_TOO_SMALL || file_info_size * 2 < file_info_size) {
+ Print(L"\nFailed to get file info for '%s': %r\n", old_path, r);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return;
+ }
+
+ file_info_size *= 2;
+ FreePool(file_info);
+ }
+
+ /* And rename the file */
+ StrCpy(file_info->FileName, entry->next_name);
+ r = uefi_call_wrapper(handle->SetInfo, 4, handle, &EfiFileInfoGuid, file_info_size, file_info);
+ if (EFI_ERROR(r)) {
+ Print(L"\nFailed to rename '%s' to '%s', ignoring: %r\n", old_path, entry->next_name, r);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return;
+ }
+
+ /* Flush everything to disk, just in case… */
+ (void) uefi_call_wrapper(handle->Flush, 1, handle);
+
+ /* Let's tell the OS that we renamed this file, so that it knows what to rename to the counter-less name on
+ * success */
+ new_path = PoolPrint(L"%s\\%s", entry->path, entry->next_name);
+ efivar_set(L"LoaderBootCountPath", new_path, FALSE);
+
+ /* If the file we just renamed is the loader path, then let's update that. */
+ if (StrCmp(entry->loader, old_path) == 0) {
+ FreePool(entry->loader);
+ entry->loader = TAKE_PTR(new_path);
+ }
+}
+
+static VOID config_entry_add_from_file(
+ Config *config,
+ EFI_HANDLE *device,
+ EFI_FILE *root_dir,
+ CHAR16 *path,
+ CHAR16 *file,
+ CHAR8 *content,
+ CHAR16 *loaded_image_path) {
+
+ ConfigEntry *entry;
+ CHAR8 *line;
+ UINTN pos = 0;
+ CHAR8 *key, *value;
+ EFI_STATUS err;
+ EFI_FILE_HANDLE handle;
+ _cleanup_freepool_ CHAR16 *initrd = NULL;
+
+ entry = AllocatePool(sizeof(ConfigEntry));
+
+ *entry = (ConfigEntry) {
+ .tries_done = (UINTN) -1,
+ .tries_left = (UINTN) -1,
+ };
+
+ while ((line = line_get_key_value(content, (CHAR8 *)" \t", &pos, &key, &value))) {
+ if (strcmpa((CHAR8 *)"title", key) == 0) {
+ FreePool(entry->title);
+ entry->title = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"version", key) == 0) {
+ FreePool(entry->version);
+ entry->version = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"machine-id", key) == 0) {
+ FreePool(entry->machine_id);
+ entry->machine_id = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"linux", key) == 0) {
+ FreePool(entry->loader);
+ entry->type = LOADER_LINUX;
+ entry->loader = stra_to_path(value);
+ entry->key = 'l';
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"efi", key) == 0) {
+ entry->type = LOADER_EFI;
+ FreePool(entry->loader);
+ entry->loader = stra_to_path(value);
+
+ /* do not add an entry for ourselves */
+ if (loaded_image_path && StriCmp(entry->loader, loaded_image_path) == 0) {
+ entry->type = LOADER_UNDEFINED;
+ break;
+ }
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"architecture", key) == 0) {
+ /* do not add an entry for an EFI image of architecture not matching with that of the image */
+ if (strcmpa((CHAR8 *)EFI_MACHINE_TYPE_NAME, value) != 0) {
+ entry->type = LOADER_UNDEFINED;
+ break;
+ }
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"initrd", key) == 0) {
+ _cleanup_freepool_ CHAR16 *new = NULL;
+
+ new = stra_to_path(value);
+ if (initrd) {
+ CHAR16 *s;
+
+ s = PoolPrint(L"%s initrd=%s", initrd, new);
+ FreePool(initrd);
+ initrd = s;
+ } else
+ initrd = PoolPrint(L"initrd=%s", new);
+
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"options", key) == 0) {
+ _cleanup_freepool_ CHAR16 *new = NULL;
+
+ new = stra_to_str(value);
+ if (entry->options) {
+ CHAR16 *s;
+
+ s = PoolPrint(L"%s %s", entry->options, new);
+ FreePool(entry->options);
+ entry->options = s;
+ } else
+ entry->options = TAKE_PTR(new);
+
+ continue;
+ }
+ }
+
+ if (entry->type == LOADER_UNDEFINED) {
+ config_entry_free(entry);
+ return;
+ }
+
+ /* check existence */
+ err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &handle, entry->loader, EFI_FILE_MODE_READ, 0ULL);
+ if (EFI_ERROR(err)) {
+ config_entry_free(entry);
+ return;
+ }
+ uefi_call_wrapper(handle->Close, 1, handle);
+
+ /* add initrd= to options */
+ if (entry->type == LOADER_LINUX && initrd) {
+ if (entry->options) {
+ CHAR16 *s;
+
+ s = PoolPrint(L"%s %s", initrd, entry->options);
+ FreePool(entry->options);
+ entry->options = s;
+ } else
+ entry->options = TAKE_PTR(initrd);
+ }
+
+ entry->device = device;
+ entry->id = StrDuplicate(file);
+ StrLwr(entry->id);
+
+ config_add_entry(config, entry);
+
+ config_entry_parse_tries(entry, path, file, L".conf");
+}
+
+static VOID config_load_defaults(Config *config, EFI_FILE *root_dir) {
+ _cleanup_freepool_ CHAR8 *content = NULL;
+ UINTN sec;
+ EFI_STATUS err;
+
+ *config = (Config) {
+ .editor = TRUE,
+ .auto_entries = TRUE,
+ .auto_firmware = TRUE,
+ .random_seed_mode = RANDOM_SEED_WITH_SYSTEM_TOKEN,
+ };
+
+ err = file_read(root_dir, L"\\loader\\loader.conf", 0, 0, &content, NULL);
+ if (!EFI_ERROR(err))
+ config_defaults_load_from_file(config, content);
+
+ err = efivar_get_int(L"LoaderConfigTimeout", &sec);
+ if (!EFI_ERROR(err)) {
+ config->timeout_sec_efivar = sec > INTN_MAX ? INTN_MAX : sec;
+ config->timeout_sec = sec;
+ } else
+ config->timeout_sec_efivar = -1;
+
+ err = efivar_get_int(L"LoaderConfigTimeoutOneShot", &sec);
+ if (!EFI_ERROR(err)) {
+ /* Unset variable now, after all it's "one shot". */
+ (void) efivar_set(L"LoaderConfigTimeoutOneShot", NULL, TRUE);
+
+ config->timeout_sec = sec;
+ config->force_menu = TRUE; /* force the menu when this is set */
+ }
+}
+
+static VOID config_load_entries(
+ Config *config,
+ EFI_HANDLE *device,
+ EFI_FILE *root_dir,
+ CHAR16 *loaded_image_path) {
+
+ EFI_FILE_HANDLE entries_dir;
+ EFI_STATUS err;
+
+ err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &entries_dir, L"\\loader\\entries", EFI_FILE_MODE_READ, 0ULL);
+ if (!EFI_ERROR(err)) {
+ for (;;) {
+ CHAR16 buf[256];
+ UINTN bufsize;
+ EFI_FILE_INFO *f;
+ _cleanup_freepool_ CHAR8 *content = NULL;
+ UINTN len;
+
+ bufsize = sizeof(buf);
+ err = uefi_call_wrapper(entries_dir->Read, 3, entries_dir, &bufsize, buf);
+ if (bufsize == 0 || EFI_ERROR(err))
+ break;
+
+ f = (EFI_FILE_INFO *) buf;
+ if (f->FileName[0] == '.')
+ continue;
+ if (f->Attribute & EFI_FILE_DIRECTORY)
+ continue;
+
+ len = StrLen(f->FileName);
+ if (len < 6)
+ continue;
+ if (StriCmp(f->FileName + len - 5, L".conf") != 0)
+ continue;
+ if (StrnCmp(f->FileName, L"auto-", 5) == 0)
+ continue;
+
+ err = file_read(entries_dir, f->FileName, 0, 0, &content, NULL);
+ if (!EFI_ERROR(err))
+ config_entry_add_from_file(config, device, root_dir, L"\\loader\\entries", f->FileName, content, loaded_image_path);
+ }
+ uefi_call_wrapper(entries_dir->Close, 1, entries_dir);
+ }
+}
+
+static INTN config_entry_compare(ConfigEntry *a, ConfigEntry *b) {
+ INTN r;
+
+ /* Order entries that have no tries left to the beginning of the list */
+ if (a->tries_left != 0 && b->tries_left == 0)
+ return 1;
+ if (a->tries_left == 0 && b->tries_left != 0)
+ return -1;
+
+ r = str_verscmp(a->id, b->id);
+ if (r != 0)
+ return r;
+
+ if (a->tries_left == (UINTN) -1 ||
+ b->tries_left == (UINTN) -1)
+ return 0;
+
+ /* If both items have boot counting, and otherwise are identical, put the entry with more tries left last */
+ if (a->tries_left > b->tries_left)
+ return 1;
+ if (a->tries_left < b->tries_left)
+ return -1;
+
+ /* If they have the same number of tries left, then let the one win which was tried fewer times so far */
+ if (a->tries_done < b->tries_done)
+ return 1;
+ if (a->tries_done > b->tries_done)
+ return -1;
+
+ return 0;
+}
+
+static VOID config_sort_entries(Config *config) {
+ UINTN i;
+
+ for (i = 1; i < config->entry_count; i++) {
+ BOOLEAN more;
+ UINTN k;
+
+ more = FALSE;
+ for (k = 0; k < config->entry_count - i; k++) {
+ ConfigEntry *entry;
+
+ if (config_entry_compare(config->entries[k], config->entries[k+1]) <= 0)
+ continue;
+
+ entry = config->entries[k];
+ config->entries[k] = config->entries[k+1];
+ config->entries[k+1] = entry;
+ more = TRUE;
+ }
+ if (!more)
+ break;
+ }
+}
+
+static INTN config_entry_find(Config *config, CHAR16 *id) {
+ UINTN i;
+
+ for (i = 0; i < config->entry_count; i++)
+ if (StrCmp(config->entries[i]->id, id) == 0)
+ return (INTN) i;
+
+ return -1;
+}
+
+static VOID config_default_entry_select(Config *config) {
+ _cleanup_freepool_ CHAR16 *entry_oneshot = NULL, *entry_default = NULL;
+ EFI_STATUS err;
+ INTN i;
+
+ /*
+ * The EFI variable to specify a boot entry for the next, and only the
+ * next reboot. The variable is always cleared directly after it is read.
+ */
+ err = efivar_get(L"LoaderEntryOneShot", &entry_oneshot);
+ if (!EFI_ERROR(err)) {
+
+ config->entry_oneshot = StrDuplicate(entry_oneshot);
+ efivar_set(L"LoaderEntryOneShot", NULL, TRUE);
+
+ i = config_entry_find(config, entry_oneshot);
+ if (i >= 0) {
+ config->idx_default = i;
+ return;
+ }
+ }
+
+ /*
+ * The EFI variable to select the default boot entry overrides the
+ * configured pattern. The variable can be set and cleared by pressing
+ * the 'd' key in the loader selection menu, the entry is marked with
+ * an '*'.
+ */
+ err = efivar_get(L"LoaderEntryDefault", &entry_default);
+ if (!EFI_ERROR(err)) {
+
+ i = config_entry_find(config, entry_default);
+ if (i >= 0) {
+ config->idx_default = i;
+ config->idx_default_efivar = i;
+ return;
+ }
+ }
+ config->idx_default_efivar = -1;
+
+ if (config->entry_count == 0)
+ return;
+
+ /*
+ * Match the pattern from the end of the list to the start, find last
+ * entry (largest number) matching the given pattern.
+ */
+ if (config->entry_default_pattern) {
+ i = config->entry_count;
+ while (i--) {
+ if (config->entries[i]->no_autoselect)
+ continue;
+ if (MetaiMatch(config->entries[i]->id, config->entry_default_pattern)) {
+ config->idx_default = i;
+ return;
+ }
+ }
+ }
+
+ /* select the last suitable entry */
+ i = config->entry_count;
+ while (i--) {
+ if (config->entries[i]->no_autoselect)
+ continue;
+ config->idx_default = i;
+ return;
+ }
+
+ /* no entry found */
+ config->idx_default = -1;
+}
+
+static BOOLEAN find_nonunique(ConfigEntry **entries, UINTN entry_count) {
+ BOOLEAN non_unique = FALSE;
+ UINTN i, k;
+
+ for (i = 0; i < entry_count; i++)
+ entries[i]->non_unique = FALSE;
+
+ for (i = 0; i < entry_count; i++)
+ for (k = 0; k < entry_count; k++) {
+ if (i == k)
+ continue;
+ if (StrCmp(entries[i]->title_show, entries[k]->title_show) != 0)
+ continue;
+
+ non_unique = entries[i]->non_unique = entries[k]->non_unique = TRUE;
+ }
+
+ return non_unique;
+}
+
+/* generate a unique title, avoiding non-distinguishable menu entries */
+static VOID config_title_generate(Config *config) {
+ UINTN i;
+
+ /* set title */
+ for (i = 0; i < config->entry_count; i++) {
+ CHAR16 *title;
+
+ FreePool(config->entries[i]->title_show);
+ title = config->entries[i]->title;
+ if (!title)
+ title = config->entries[i]->id;
+ config->entries[i]->title_show = StrDuplicate(title);
+ }
+
+ if (!find_nonunique(config->entries, config->entry_count))
+ return;
+
+ /* add version to non-unique titles */
+ for (i = 0; i < config->entry_count; i++) {
+ CHAR16 *s;
+
+ if (!config->entries[i]->non_unique)
+ continue;
+ if (!config->entries[i]->version)
+ continue;
+
+ s = PoolPrint(L"%s (%s)", config->entries[i]->title_show, config->entries[i]->version);
+ FreePool(config->entries[i]->title_show);
+ config->entries[i]->title_show = s;
+ }
+
+ if (!find_nonunique(config->entries, config->entry_count))
+ return;
+
+ /* add machine-id to non-unique titles */
+ for (i = 0; i < config->entry_count; i++) {
+ CHAR16 *s;
+ _cleanup_freepool_ CHAR16 *m = NULL;
+
+ if (!config->entries[i]->non_unique)
+ continue;
+ if (!config->entries[i]->machine_id)
+ continue;
+
+ m = StrDuplicate(config->entries[i]->machine_id);
+ m[8] = '\0';
+ s = PoolPrint(L"%s (%s)", config->entries[i]->title_show, m);
+ FreePool(config->entries[i]->title_show);
+ config->entries[i]->title_show = s;
+ }
+
+ if (!find_nonunique(config->entries, config->entry_count))
+ return;
+
+ /* add file name to non-unique titles */
+ for (i = 0; i < config->entry_count; i++) {
+ CHAR16 *s;
+
+ if (!config->entries[i]->non_unique)
+ continue;
+ s = PoolPrint(L"%s (%s)", config->entries[i]->title_show, config->entries[i]->id);
+ FreePool(config->entries[i]->title_show);
+ config->entries[i]->title_show = s;
+ config->entries[i]->non_unique = FALSE;
+ }
+}
+
+static BOOLEAN config_entry_add_call(
+ Config *config,
+ CHAR16 *id,
+ CHAR16 *title,
+ EFI_STATUS (*call)(VOID)) {
+
+ ConfigEntry *entry;
+
+ entry = AllocatePool(sizeof(ConfigEntry));
+ *entry = (ConfigEntry) {
+ .id = StrDuplicate(id),
+ .title = StrDuplicate(title),
+ .call = call,
+ .no_autoselect = TRUE,
+ .tries_done = (UINTN) -1,
+ .tries_left = (UINTN) -1,
+ };
+
+ config_add_entry(config, entry);
+ return TRUE;
+}
+
+static ConfigEntry *config_entry_add_loader(
+ Config *config,
+ EFI_HANDLE *device,
+ enum loader_type type,
+ CHAR16 *id,
+ CHAR16 key,
+ CHAR16 *title,
+ CHAR16 *loader,
+ CHAR16 *version) {
+
+ ConfigEntry *entry;
+
+ entry = AllocatePool(sizeof(ConfigEntry));
+ *entry = (ConfigEntry) {
+ .type = type,
+ .title = StrDuplicate(title),
+ .version = StrDuplicate(version),
+ .device = device,
+ .loader = StrDuplicate(loader),
+ .id = StrDuplicate(id),
+ .key = key,
+ .tries_done = (UINTN) -1,
+ .tries_left = (UINTN) -1,
+ };
+
+ StrLwr(entry->id);
+
+ config_add_entry(config, entry);
+ return entry;
+}
+
+static BOOLEAN config_entry_add_loader_auto(
+ Config *config,
+ EFI_HANDLE *device,
+ EFI_FILE *root_dir,
+ CHAR16 *loaded_image_path,
+ CHAR16 *id,
+ CHAR16 key,
+ CHAR16 *title,
+ CHAR16 *loader) {
+
+ EFI_FILE_HANDLE handle;
+ ConfigEntry *entry;
+ EFI_STATUS err;
+
+ if (!config->auto_entries)
+ return FALSE;
+
+ /* do not add an entry for ourselves */
+ if (loaded_image_path) {
+ UINTN len;
+ _cleanup_freepool_ CHAR8 *content = NULL;
+
+ if (StriCmp(loader, loaded_image_path) == 0)
+ return FALSE;
+
+ /* look for systemd-boot magic string */
+ err = file_read(root_dir, loader, 0, 100*1024, &content, &len);
+ if (!EFI_ERROR(err)) {
+ CHAR8 *start = content;
+ CHAR8 *last = content + len - sizeof(magic) - 1;
+
+ for (; start <= last; start++)
+ if (start[0] == magic[0] && CompareMem(start, magic, sizeof(magic) - 1) == 0)
+ return FALSE;
+ }
+ }
+
+ /* check existence */
+ err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &handle, loader, EFI_FILE_MODE_READ, 0ULL);
+ if (EFI_ERROR(err))
+ return FALSE;
+ uefi_call_wrapper(handle->Close, 1, handle);
+
+ entry = config_entry_add_loader(config, device, LOADER_UNDEFINED, id, key, title, loader, NULL);
+ if (!entry)
+ return FALSE;
+
+ /* do not boot right away into auto-detected entries */
+ entry->no_autoselect = TRUE;
+
+ return TRUE;
+}
+
+static VOID config_entry_add_osx(Config *config) {
+ EFI_STATUS err;
+ UINTN handle_count = 0;
+ _cleanup_freepool_ EFI_HANDLE *handles = NULL;
+
+ if (!config->auto_entries)
+ return;
+
+ err = LibLocateHandle(ByProtocol, &FileSystemProtocol, NULL, &handle_count, &handles);
+ if (!EFI_ERROR(err)) {
+ UINTN i;
+
+ for (i = 0; i < handle_count; i++) {
+ EFI_FILE *root;
+ BOOLEAN found;
+
+ root = LibOpenRoot(handles[i]);
+ if (!root)
+ continue;
+ found = config_entry_add_loader_auto(config, handles[i], root, NULL, L"auto-osx", 'a', L"macOS",
+ L"\\System\\Library\\CoreServices\\boot.efi");
+ uefi_call_wrapper(root->Close, 1, root);
+ if (found)
+ break;
+ }
+ }
+}
+
+static VOID config_entry_add_linux(
+ Config *config,
+ EFI_HANDLE *device,
+ EFI_FILE *root_dir) {
+
+ EFI_FILE_HANDLE linux_dir;
+ EFI_STATUS err;
+ ConfigEntry *entry;
+
+ err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &linux_dir, L"\\EFI\\Linux", EFI_FILE_MODE_READ, 0ULL);
+ if (EFI_ERROR(err))
+ return;
+
+ for (;;) {
+ CHAR16 buf[256];
+ UINTN bufsize = sizeof buf;
+ EFI_FILE_INFO *f;
+ CHAR8 *sections[] = {
+ (CHAR8 *)".osrel",
+ (CHAR8 *)".cmdline",
+ NULL
+ };
+ UINTN offs[ELEMENTSOF(sections)-1] = {};
+ UINTN szs[ELEMENTSOF(sections)-1] = {};
+ UINTN addrs[ELEMENTSOF(sections)-1] = {};
+ CHAR8 *content = NULL;
+ UINTN len;
+ CHAR8 *line;
+ UINTN pos = 0;
+ CHAR8 *key, *value;
+ CHAR16 *os_name_pretty = NULL;
+ CHAR16 *os_name = NULL;
+ CHAR16 *os_id = NULL;
+ CHAR16 *os_version = NULL;
+ CHAR16 *os_version_id = NULL;
+ CHAR16 *os_build_id = NULL;
+
+ err = uefi_call_wrapper(linux_dir->Read, 3, linux_dir, &bufsize, buf);
+ if (bufsize == 0 || EFI_ERROR(err))
+ break;
+
+ f = (EFI_FILE_INFO *) buf;
+ if (f->FileName[0] == '.')
+ continue;
+ if (f->Attribute & EFI_FILE_DIRECTORY)
+ continue;
+ len = StrLen(f->FileName);
+ if (len < 5)
+ continue;
+ if (StriCmp(f->FileName + len - 4, L".efi") != 0)
+ continue;
+ if (StrnCmp(f->FileName, L"auto-", 5) == 0)
+ continue;
+
+ /* look for .osrel and .cmdline sections in the .efi binary */
+ err = pe_file_locate_sections(linux_dir, f->FileName, sections, addrs, offs, szs);
+ if (EFI_ERROR(err))
+ continue;
+
+ err = file_read(linux_dir, f->FileName, offs[0], szs[0], &content, NULL);
+ if (EFI_ERROR(err))
+ continue;
+
+ /* read properties from the embedded os-release file */
+ while ((line = line_get_key_value(content, (CHAR8 *)"=", &pos, &key, &value))) {
+ if (strcmpa((CHAR8 *)"PRETTY_NAME", key) == 0) {
+ FreePool(os_name_pretty);
+ os_name_pretty = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"NAME", key) == 0) {
+ FreePool(os_name);
+ os_name = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"ID", key) == 0) {
+ FreePool(os_id);
+ os_id = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"VERSION", key) == 0) {
+ FreePool(os_version);
+ os_version = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"VERSION_ID", key) == 0) {
+ FreePool(os_version_id);
+ os_version_id = stra_to_str(value);
+ continue;
+ }
+
+ if (strcmpa((CHAR8 *)"BUILD_ID", key) == 0) {
+ FreePool(os_build_id);
+ os_build_id = stra_to_str(value);
+ continue;
+ }
+ }
+
+ if ((os_name_pretty || os_name) && os_id && (os_version || os_version_id || os_build_id)) {
+ _cleanup_freepool_ CHAR16 *path = NULL;
+
+ path = PoolPrint(L"\\EFI\\Linux\\%s", f->FileName);
+
+ entry = config_entry_add_loader(config, device, LOADER_LINUX, f->FileName, 'l',
+ os_name_pretty ? : (os_name ? : os_id), path,
+ os_version ? : (os_version_id ? : os_build_id));
+
+ FreePool(content);
+ content = NULL;
+
+ /* read the embedded cmdline file */
+ err = file_read(linux_dir, f->FileName, offs[1], szs[1], &content, NULL);
+ if (!EFI_ERROR(err)) {
+
+ /* chomp the newline */
+ if (content[szs[1]-1] == '\n')
+ content[szs[1]-1] = '\0';
+
+ entry->options = stra_to_str(content);
+ }
+
+ config_entry_parse_tries(entry, L"\\EFI\\Linux", f->FileName, L".efi");
+ }
+
+ FreePool(os_name_pretty);
+ FreePool(os_name);
+ FreePool(os_id);
+ FreePool(os_version);
+ FreePool(os_version_id);
+ FreePool(os_build_id);
+ FreePool(content);
+ }
+
+ uefi_call_wrapper(linux_dir->Close, 1, linux_dir);
+}
+
+/* Note that this is in GUID format, i.e. the first 32bit, and the following pair of 16bit are byteswapped. */
+static const UINT8 xbootldr_guid[16] = {
+ 0xff, 0xc2, 0x13, 0xbc, 0xe6, 0x59, 0x62, 0x42, 0xa3, 0x52, 0xb2, 0x75, 0xfd, 0x6f, 0x71, 0x72
+};
+
+EFI_DEVICE_PATH *path_parent(EFI_DEVICE_PATH *path, EFI_DEVICE_PATH *node) {
+ EFI_DEVICE_PATH *parent;
+ UINTN len;
+
+ len = (UINT8*) NextDevicePathNode(node) - (UINT8*) path;
+ parent = (EFI_DEVICE_PATH*) AllocatePool(len + sizeof(EFI_DEVICE_PATH));
+ CopyMem(parent, path, len);
+ CopyMem((UINT8*) parent + len, EndDevicePath, sizeof(EFI_DEVICE_PATH));
+
+ return parent;
+}
+
+static VOID config_load_xbootldr(
+ Config *config,
+ EFI_HANDLE *device) {
+
+ EFI_DEVICE_PATH *partition_path, *node, *disk_path, *copy;
+ UINT32 found_partition_number = (UINT32) -1;
+ UINT64 found_partition_start = (UINT64) -1;
+ UINT64 found_partition_size = (UINT64) -1;
+ UINT8 found_partition_signature[16] = {};
+ EFI_HANDLE new_device;
+ EFI_FILE *root_dir;
+ EFI_STATUS r;
+
+ partition_path = DevicePathFromHandle(device);
+ if (!partition_path)
+ return;
+
+ for (node = partition_path; !IsDevicePathEnd(node); node = NextDevicePathNode(node)) {
+ EFI_HANDLE disk_handle;
+ EFI_BLOCK_IO *block_io;
+ EFI_DEVICE_PATH *p;
+ UINTN nr;
+
+ /* First, Let's look for the SCSI/SATA/USB/… device path node, i.e. one above the media
+ * devices */
+ if (DevicePathType(node) != MESSAGING_DEVICE_PATH)
+ continue;
+
+ /* Determine the device path one level up */
+ disk_path = path_parent(partition_path, node);
+ p = disk_path;
+ r = uefi_call_wrapper(BS->LocateDevicePath, 3, &BlockIoProtocol, &p, &disk_handle);
+ if (EFI_ERROR(r))
+ continue;
+
+ r = uefi_call_wrapper(BS->HandleProtocol, 3, disk_handle, &BlockIoProtocol, (VOID **)&block_io);
+ if (EFI_ERROR(r))
+ continue;
+
+ /* Filter out some block devices early. (We only care about block devices that aren't
+ * partitions themselves — we look for GPT partition tables to parse after all —, and only
+ * those which contain a medium and have at least 2 blocks.) */
+ if (block_io->Media->LogicalPartition ||
+ !block_io->Media->MediaPresent ||
+ block_io->Media->LastBlock <= 1)
+ continue;
+
+ /* Try both copies of the GPT header, in case one is corrupted */
+ for (nr = 0; nr < 2; nr++) {
+ _cleanup_freepool_ EFI_PARTITION_ENTRY* entries = NULL;
+ union {
+ EFI_PARTITION_TABLE_HEADER gpt_header;
+ uint8_t space[((sizeof(EFI_PARTITION_TABLE_HEADER) + 511) / 512) * 512];
+ } gpt_header_buffer;
+ const EFI_PARTITION_TABLE_HEADER *h = &gpt_header_buffer.gpt_header;
+ UINT64 where;
+ UINTN i, sz;
+ UINT32 c;
+
+ if (nr == 0)
+ /* Read the first copy at LBA 1 */
+ where = 1;
+ else
+ /* Read the second copy at the very last LBA of this block device */
+ where = block_io->Media->LastBlock;
+
+ /* Read the GPT header */
+ r = uefi_call_wrapper(block_io->ReadBlocks, 5,
+ block_io,
+ block_io->Media->MediaId,
+ where,
+ sizeof(gpt_header_buffer), &gpt_header_buffer);
+ if (EFI_ERROR(r))
+ continue;
+
+ /* Some superficial validation of the GPT header */
+ c = CompareMem(&h->Header.Signature, "EFI PART", sizeof(h->Header.Signature));
+ if (c != 0)
+ continue;
+
+ if (h->Header.HeaderSize < 92 ||
+ h->Header.HeaderSize > 512)
+ continue;
+
+ if (h->Header.Revision != 0x00010000U)
+ continue;
+
+ /* Calculate CRC check */
+ c = ~crc32_exclude_offset((UINT32) -1,
+ (const UINT8*) &gpt_header_buffer,
+ h->Header.HeaderSize,
+ OFFSETOF(EFI_PARTITION_TABLE_HEADER, Header.CRC32),
+ sizeof(h->Header.CRC32));
+ if (c != h->Header.CRC32)
+ continue;
+
+ if (h->MyLBA != where)
+ continue;
+
+ if (h->SizeOfPartitionEntry < sizeof(EFI_PARTITION_ENTRY))
+ continue;
+
+ if (h->NumberOfPartitionEntries <= 0 ||
+ h->NumberOfPartitionEntries > 1024)
+ continue;
+
+ if (h->SizeOfPartitionEntry > UINTN_MAX / h->NumberOfPartitionEntries) /* overflow check */
+ continue;
+
+ /* Now load the GPT entry table */
+ sz = ALIGN_TO((UINTN) h->SizeOfPartitionEntry * (UINTN) h->NumberOfPartitionEntries, 512);
+ entries = AllocatePool(sz);
+
+ r = uefi_call_wrapper(block_io->ReadBlocks, 5,
+ block_io,
+ block_io->Media->MediaId,
+ h->PartitionEntryLBA,
+ sz, entries);
+ if (EFI_ERROR(r))
+ continue;
+
+ /* Calculate CRC of entries array, too */
+ c = ~crc32((UINT32) -1, entries, sz);
+ if (c != h->PartitionEntryArrayCRC32)
+ continue;
+
+ for (i = 0; i < h->NumberOfPartitionEntries; i++) {
+ EFI_PARTITION_ENTRY *entry;
+
+ entry = (EFI_PARTITION_ENTRY*) ((UINT8*) entries + h->SizeOfPartitionEntry * i);
+
+ if (CompareMem(&entry->PartitionTypeGUID, xbootldr_guid, 16) == 0) {
+ UINT64 end;
+
+ /* Let's use memcpy(), in case the structs are not aligned (they really should be though) */
+ CopyMem(&found_partition_start, &entry->StartingLBA, sizeof(found_partition_start));
+ CopyMem(&end, &entry->EndingLBA, sizeof(end));
+
+ if (end < found_partition_start) /* Bogus? */
+ continue;
+
+ found_partition_size = end - found_partition_start + 1;
+ CopyMem(found_partition_signature, &entry->UniquePartitionGUID, sizeof(found_partition_signature));
+
+ found_partition_number = i + 1;
+ goto found;
+ }
+ }
+
+ break; /* This GPT was fully valid, but we didn't find what we are looking for. This
+ * means there's no reason to check the second copy of the GPT header */
+ }
+ }
+
+ return; /* Not found */
+
+found:
+ copy = DuplicateDevicePath(partition_path);
+
+ /* Patch in the data we found */
+ for (node = copy; !IsDevicePathEnd(node); node = NextDevicePathNode(node)) {
+ HARDDRIVE_DEVICE_PATH *hd;
+
+ if (DevicePathType(node) != MEDIA_DEVICE_PATH)
+ continue;
+
+ if (DevicePathSubType(node) != MEDIA_HARDDRIVE_DP)
+ continue;
+
+ hd = (HARDDRIVE_DEVICE_PATH*) node;
+ hd->PartitionNumber = found_partition_number;
+ hd->PartitionStart = found_partition_start;
+ hd->PartitionSize = found_partition_size;
+ CopyMem(hd->Signature, found_partition_signature, sizeof(hd->Signature));
+ hd->MBRType = MBR_TYPE_EFI_PARTITION_TABLE_HEADER;
+ hd->SignatureType = SIGNATURE_TYPE_GUID;
+ }
+
+ r = uefi_call_wrapper(BS->LocateDevicePath, 3, &BlockIoProtocol, &copy, &new_device);
+ if (EFI_ERROR(r))
+ return;
+
+ root_dir = LibOpenRoot(new_device);
+ if (!root_dir)
+ return;
+
+ config_entry_add_linux(config, new_device, root_dir);
+ config_load_entries(config, new_device, root_dir, NULL);
+}
+
+static EFI_STATUS image_start(
+ EFI_HANDLE parent_image,
+ const Config *config,
+ const ConfigEntry *entry) {
+
+ EFI_HANDLE image;
+ _cleanup_freepool_ EFI_DEVICE_PATH *path = NULL;
+ CHAR16 *options;
+ EFI_STATUS err;
+
+ path = FileDevicePath(entry->device, entry->loader);
+ if (!path) {
+ Print(L"Error getting device path.");
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ err = uefi_call_wrapper(BS->LoadImage, 6, FALSE, parent_image, path, NULL, 0, &image);
+ if (EFI_ERROR(err)) {
+ Print(L"Error loading %s: %r", entry->loader, err);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return err;
+ }
+
+ if (config->options_edit)
+ options = config->options_edit;
+ else if (entry->options)
+ options = entry->options;
+ else
+ options = NULL;
+ if (options) {
+ EFI_LOADED_IMAGE *loaded_image;
+
+ err = uefi_call_wrapper(BS->OpenProtocol, 6, image, &LoadedImageProtocol, (VOID **)&loaded_image,
+ parent_image, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ if (EFI_ERROR(err)) {
+ Print(L"Error getting LoadedImageProtocol handle: %r", err);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ goto out_unload;
+ }
+ loaded_image->LoadOptions = options;
+ loaded_image->LoadOptionsSize = (StrLen(loaded_image->LoadOptions)+1) * sizeof(CHAR16);
+
+#if ENABLE_TPM
+ /* Try to log any options to the TPM, especially to catch manually edited options */
+ err = tpm_log_event(SD_TPM_PCR,
+ (EFI_PHYSICAL_ADDRESS) (UINTN) loaded_image->LoadOptions,
+ loaded_image->LoadOptionsSize, loaded_image->LoadOptions);
+ if (EFI_ERROR(err)) {
+ Print(L"Unable to add image options measurement: %r", err);
+ uefi_call_wrapper(BS->Stall, 1, 200 * 1000);
+ }
+#endif
+ }
+
+ efivar_set_time_usec(L"LoaderTimeExecUSec", 0);
+ err = uefi_call_wrapper(BS->StartImage, 3, image, NULL, NULL);
+out_unload:
+ uefi_call_wrapper(BS->UnloadImage, 1, image);
+ return err;
+}
+
+static EFI_STATUS reboot_into_firmware(VOID) {
+ _cleanup_freepool_ CHAR8 *b = NULL;
+ UINTN size;
+ UINT64 osind;
+ EFI_STATUS err;
+
+ osind = EFI_OS_INDICATIONS_BOOT_TO_FW_UI;
+
+ err = efivar_get_raw(&global_guid, L"OsIndications", &b, &size);
+ if (!EFI_ERROR(err))
+ osind |= (UINT64)*b;
+
+ err = efivar_set_raw(&global_guid, L"OsIndications", &osind, sizeof(UINT64), TRUE);
+ if (EFI_ERROR(err))
+ return err;
+
+ err = uefi_call_wrapper(RT->ResetSystem, 4, EfiResetCold, EFI_SUCCESS, 0, NULL);
+ Print(L"Error calling ResetSystem: %r", err);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return err;
+}
+
+static VOID config_free(Config *config) {
+ UINTN i;
+
+ for (i = 0; i < config->entry_count; i++)
+ config_entry_free(config->entries[i]);
+ FreePool(config->entries);
+ FreePool(config->entry_default_pattern);
+ FreePool(config->options_edit);
+ FreePool(config->entry_oneshot);
+}
+
+static VOID config_write_entries_to_variable(Config *config) {
+ _cleanup_freepool_ CHAR16 *buffer = NULL;
+ UINTN i, sz = 0;
+ CHAR16 *p;
+
+ for (i = 0; i < config->entry_count; i++)
+ sz += StrLen(config->entries[i]->id) + 1;
+
+ p = buffer = AllocatePool(sz * sizeof(CHAR16));
+
+ for (i = 0; i < config->entry_count; i++) {
+ UINTN l;
+
+ l = StrLen(config->entries[i]->id) + 1;
+ CopyMem(p, config->entries[i]->id, l * sizeof(CHAR16));
+
+ p += l;
+ }
+
+ /* Store the full list of discovered entries. */
+ (void) efivar_set_raw(&loader_guid, L"LoaderEntries", buffer, (UINT8*) p - (UINT8*) buffer, FALSE);
+}
+
+EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
+ static const UINT64 loader_features =
+ EFI_LOADER_FEATURE_CONFIG_TIMEOUT |
+ EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT |
+ EFI_LOADER_FEATURE_ENTRY_DEFAULT |
+ EFI_LOADER_FEATURE_ENTRY_ONESHOT |
+ EFI_LOADER_FEATURE_BOOT_COUNTING |
+ EFI_LOADER_FEATURE_XBOOTLDR |
+ EFI_LOADER_FEATURE_RANDOM_SEED |
+ 0;
+
+ _cleanup_freepool_ CHAR16 *infostr = NULL, *typestr = NULL;
+ CHAR8 *b;
+ UINTN size;
+ EFI_LOADED_IMAGE *loaded_image;
+ EFI_FILE *root_dir;
+ CHAR16 *loaded_image_path;
+ EFI_STATUS err;
+ Config config;
+ UINT64 init_usec;
+ BOOLEAN menu = FALSE;
+ CHAR16 uuid[37];
+
+ InitializeLib(image, sys_table);
+ init_usec = time_usec();
+ efivar_set_time_usec(L"LoaderTimeInitUSec", init_usec);
+ efivar_set(L"LoaderInfo", L"systemd-boot " GIT_VERSION, FALSE);
+
+ infostr = PoolPrint(L"%s %d.%02d", ST->FirmwareVendor, ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
+ efivar_set(L"LoaderFirmwareInfo", infostr, FALSE);
+
+ typestr = PoolPrint(L"UEFI %d.%02d", ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff);
+ efivar_set(L"LoaderFirmwareType", typestr, FALSE);
+
+ (void) efivar_set_raw(&loader_guid, L"LoaderFeatures", &loader_features, sizeof(loader_features), FALSE);
+
+ err = uefi_call_wrapper(BS->OpenProtocol, 6, image, &LoadedImageProtocol, (VOID **)&loaded_image,
+ image, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ if (EFI_ERROR(err)) {
+ Print(L"Error getting a LoadedImageProtocol handle: %r", err);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return err;
+ }
+
+ /* export the device path this image is started from */
+ if (disk_get_part_uuid(loaded_image->DeviceHandle, uuid) == EFI_SUCCESS)
+ efivar_set(L"LoaderDevicePartUUID", uuid, FALSE);
+
+ root_dir = LibOpenRoot(loaded_image->DeviceHandle);
+ if (!root_dir) {
+ Print(L"Unable to open root directory.");
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return EFI_LOAD_ERROR;
+ }
+
+ if (secure_boot_enabled() && shim_loaded()) {
+ err = security_policy_install();
+ if (EFI_ERROR(err)) {
+ Print(L"Error installing security policy: %r ", err);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return err;
+ }
+ }
+
+ /* the filesystem path to this image, to prevent adding ourselves to the menu */
+ loaded_image_path = DevicePathToStr(loaded_image->FilePath);
+ efivar_set(L"LoaderImageIdentifier", loaded_image_path, FALSE);
+
+ config_load_defaults(&config, root_dir);
+
+ /* scan /EFI/Linux/ directory */
+ config_entry_add_linux(&config, loaded_image->DeviceHandle, root_dir);
+
+ /* scan /loader/entries/\*.conf files */
+ config_load_entries(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path);
+
+ /* Similar, but on any XBOOTLDR partition */
+ config_load_xbootldr(&config, loaded_image->DeviceHandle);
+
+ /* sort entries after version number */
+ config_sort_entries(&config);
+
+ /* if we find some well-known loaders, add them to the end of the list */
+ config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, NULL,
+ L"auto-windows", 'w', L"Windows Boot Manager", L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi");
+ config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, NULL,
+ L"auto-efi-shell", 's', L"EFI Shell", L"\\shell" EFI_MACHINE_TYPE_NAME ".efi");
+ config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path,
+ L"auto-efi-default", '\0', L"EFI Default Loader", L"\\EFI\\Boot\\boot" EFI_MACHINE_TYPE_NAME ".efi");
+ config_entry_add_osx(&config);
+
+ if (config.auto_firmware && efivar_get_raw(&global_guid, L"OsIndicationsSupported", &b, &size) == EFI_SUCCESS) {
+ UINT64 osind = (UINT64)*b;
+
+ if (osind & EFI_OS_INDICATIONS_BOOT_TO_FW_UI)
+ config_entry_add_call(&config,
+ L"auto-reboot-to-firmware-setup",
+ L"Reboot Into Firmware Interface",
+ reboot_into_firmware);
+ FreePool(b);
+ }
+
+ if (config.entry_count == 0) {
+ Print(L"No loader found. Configuration files in \\loader\\entries\\*.conf are needed.");
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ goto out;
+ }
+
+ config_write_entries_to_variable(&config);
+
+ config_title_generate(&config);
+
+ /* select entry by configured pattern or EFI LoaderDefaultEntry= variable */
+ config_default_entry_select(&config);
+
+ /* if no configured entry to select from was found, enable the menu */
+ if (config.idx_default == -1) {
+ config.idx_default = 0;
+ if (config.timeout_sec == 0)
+ config.timeout_sec = 10;
+ }
+
+ /* select entry or show menu when key is pressed or timeout is set */
+ if (config.force_menu || config.timeout_sec > 0)
+ menu = TRUE;
+ else {
+ UINT64 key;
+
+ err = console_key_read(&key, FALSE);
+
+ if (err == EFI_NOT_READY) {
+ uefi_call_wrapper(BS->Stall, 1, 100 * 1000);
+ err = console_key_read(&key, FALSE);
+ }
+
+ if (!EFI_ERROR(err)) {
+ INT16 idx;
+
+ /* find matching key in config entries */
+ idx = entry_lookup_key(&config, config.idx_default, KEYCHAR(key));
+ if (idx >= 0)
+ config.idx_default = idx;
+ else
+ menu = TRUE;
+ }
+ }
+
+ for (;;) {
+ ConfigEntry *entry;
+
+ entry = config.entries[config.idx_default];
+ if (menu) {
+ efivar_set_time_usec(L"LoaderTimeMenuUSec", 0);
+ uefi_call_wrapper(BS->SetWatchdogTimer, 4, 0, 0x10000, 0, NULL);
+ if (!menu_run(&config, &entry, loaded_image_path))
+ break;
+ }
+
+ /* run special entry like "reboot" */
+ if (entry->call) {
+ entry->call();
+ continue;
+ }
+
+ config_entry_bump_counters(entry, root_dir);
+
+ /* Export the selected boot entry to the system */
+ (VOID) efivar_set(L"LoaderEntrySelected", entry->id, FALSE);
+
+ /* Optionally, read a random seed off the ESP and pass it to the OS */
+ (VOID) process_random_seed(root_dir, config.random_seed_mode);
+
+ uefi_call_wrapper(BS->SetWatchdogTimer, 4, 5 * 60, 0x10000, 0, NULL);
+ err = image_start(image, &config, entry);
+ if (EFI_ERROR(err)) {
+ graphics_mode(FALSE);
+ Print(L"\nFailed to execute %s (%s): %r\n", entry->title, entry->loader, err);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ goto out;
+ }
+
+ menu = TRUE;
+ config.timeout_sec = 0;
+ }
+ err = EFI_SUCCESS;
+out:
+ FreePool(loaded_image_path);
+ config_free(&config);
+ uefi_call_wrapper(root_dir->Close, 1, root_dir);
+ uefi_call_wrapper(BS->CloseProtocol, 4, image, &LoadedImageProtocol, image, NULL);
+ return err;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-27 01:54:18 +0000