Implement windows flavour of EFI install routines.
This commit is contained in:
Vladimir Serbinenko
parent
5f5bb10748
commit
814442ba69
4 changed files with 424 additions and 0 deletions
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@ -1,3 +1,7 @@
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2013-12-14 Vladimir Serbinenko <phcoder@gmail.com>
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Implement windows flavour of EFI install routines.
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2013-12-14 Vladimir Serbinenko <phcoder@gmail.com>
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2013-12-14 Vladimir Serbinenko <phcoder@gmail.com>
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* conf/Makefile.extra-dist: Adjust path to conf/i386-cygwin-img-ld.sc.
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* conf/Makefile.extra-dist: Adjust path to conf/i386-cygwin-img-ld.sc.
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@ -544,6 +544,7 @@ program = {
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common = grub-core/osdep/platform.c;
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common = grub-core/osdep/platform.c;
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common = grub-core/osdep/platform_unix.c;
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common = grub-core/osdep/platform_unix.c;
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extra_dist = grub-core/osdep/linux/platform.c;
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extra_dist = grub-core/osdep/linux/platform.c;
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extra_dist = grub-core/osdep/windows/platform.c;
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extra_dist = grub-core/osdep/basic/platform.c;
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extra_dist = grub-core/osdep/basic/platform.c;
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extra_dist = grub-core/osdep/basic/no_platform.c;
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extra_dist = grub-core/osdep/basic/no_platform.c;
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extra_dist = grub-core/osdep/unix/platform.c;
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extra_dist = grub-core/osdep/unix/platform.c;
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@ -1,5 +1,7 @@
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#ifdef __linux__
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#ifdef __linux__
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#include "linux/platform.c"
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#include "linux/platform.c"
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#elif defined (__MINGW32__) || defined (__CYGWIN__)
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#include "windows/platform.c"
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#elif defined (__MINGW32__) || defined (__CYGWIN__) || defined (__AROS__)
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#elif defined (__MINGW32__) || defined (__CYGWIN__) || defined (__AROS__)
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#include "basic/no_platform.c"
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#include "basic/no_platform.c"
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#else
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#else
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417
grub-core/osdep/windows/platform.c
Normal file
417
grub-core/osdep/windows/platform.c
Normal file
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@ -0,0 +1,417 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config-util.h>
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#include <windows.h>
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#include <grub/util/install.h>
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#include <grub/util/misc.h>
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#include <grub/efi/api.h>
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#include <grub/charset.h>
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#include <grub/gpt_partition.h>
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#define GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR L"{8be4df61-93ca-11d2-aa0d-00e098032b8c}"
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static enum { PLAT_UNK, PLAT_BIOS, PLAT_EFI } platform;
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static DWORD (WINAPI * func_GetFirmwareEnvironmentVariableW) (LPCWSTR lpName,
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LPCWSTR lpGuid,
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PVOID pBuffer,
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DWORD nSize);
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static BOOL (WINAPI * func_SetFirmwareEnvironmentVariableW) (LPCWSTR lpName,
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LPCWSTR lpGuid,
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PVOID pBuffer,
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DWORD nSize);
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static void (WINAPI * func_GetNativeSystemInfo) (LPSYSTEM_INFO lpSystemInfo);
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static int
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get_efi_privilegies (void)
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{
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int ret = 1;
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HANDLE hSelf;
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TOKEN_PRIVILEGES tkp;
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if (!OpenProcessToken (GetCurrentProcess(),
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TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hSelf))
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return 0;
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LookupPrivilegeValue (NULL, SE_SYSTEM_ENVIRONMENT_NAME,
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&tkp.Privileges[0].Luid);
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tkp.PrivilegeCount = 1;
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tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
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if (!AdjustTokenPrivileges (hSelf, FALSE, &tkp, 0, NULL, 0))
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ret = 0;
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if (GetLastError () != ERROR_SUCCESS)
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ret = 0;
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CloseHandle (hSelf);
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return 1;
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}
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static void
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get_platform (void)
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{
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HMODULE kernel32;
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char buffer[256];
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if (platform != PLAT_UNK)
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return;
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kernel32 = GetModuleHandle(TEXT("kernel32.dll"));
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if (!kernel32)
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{
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platform = PLAT_BIOS;
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return;
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}
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func_GetFirmwareEnvironmentVariableW = (void *)
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GetProcAddress (kernel32, "GetFirmwareEnvironmentVariableW");
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func_SetFirmwareEnvironmentVariableW = (void *)
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GetProcAddress (kernel32, "SetFirmwareEnvironmentVariableW");
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func_GetNativeSystemInfo = (void *)
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GetProcAddress (kernel32, "GetNativeSystemInfo");
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if (!func_GetNativeSystemInfo)
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func_GetNativeSystemInfo = GetSystemInfo;
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if (!func_GetFirmwareEnvironmentVariableW
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|| !func_SetFirmwareEnvironmentVariableW)
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{
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platform = PLAT_BIOS;
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return;
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}
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if (!get_efi_privilegies ())
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{
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grub_util_warn ("Insufficient privilegies to access firmware, assuming BIOS");
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platform = PLAT_BIOS;
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}
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if (!func_GetFirmwareEnvironmentVariableW (L"BootOrder", GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR,
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buffer, sizeof (buffer))
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&& GetLastError () != ERROR_INVALID_FUNCTION)
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{
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platform = PLAT_BIOS;
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return;
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}
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platform = PLAT_EFI;
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return;
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}
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const char *
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grub_install_get_default_x86_platform (void)
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{
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SYSTEM_INFO si;
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get_platform ();
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if (platform != PLAT_EFI)
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return "i386-pc";
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/* EFI */
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/* Assume 64-bit in case of failure. */
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si.wProcessorArchitecture = PROCESSOR_ARCHITECTURE_AMD64;
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func_GetNativeSystemInfo (&si);
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if (si.wProcessorArchitecture != PROCESSOR_ARCHITECTURE_INTEL)
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return "x86_64-efi";
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else
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return "i386-efi";
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}
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static void *
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get_efi_variable (const wchar_t *varname, ssize_t *len)
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{
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void *ret = NULL;
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size_t alloc_size = 256, read_size;
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get_platform ();
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while (1)
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{
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DWORD err;
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ret = xmalloc (alloc_size);
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read_size = func_GetFirmwareEnvironmentVariableW (varname, GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR,
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ret, alloc_size);
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err = GetLastError ();
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if (read_size)
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{
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*len = read_size;
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return ret;
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}
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if (err == ERROR_INSUFFICIENT_BUFFER
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&& alloc_size * 2 != 0)
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{
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alloc_size *= 2;
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free (ret);
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continue;
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}
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if (err == ERROR_ENVVAR_NOT_FOUND)
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{
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*len = -1;
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return NULL;
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}
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*len = -2;
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return NULL;
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}
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}
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static void
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set_efi_variable (const wchar_t *varname, void *in, grub_size_t len)
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{
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get_platform ();
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func_SetFirmwareEnvironmentVariableW (varname, GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR,
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in, len);
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}
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static char
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bin2hex (int v)
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{
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if (v < 10)
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return '0' + v;
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return 'A' + v - 10;
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}
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static void *
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get_efi_variable_bootn (grub_uint16_t n, ssize_t *len)
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{
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wchar_t varname[20] = L"Boot0000";
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varname[7] = bin2hex (n & 0xf);
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varname[6] = bin2hex ((n >> 4) & 0xf);
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varname[5] = bin2hex ((n >> 8) & 0xf);
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varname[4] = bin2hex ((n >> 12) & 0xf);
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return get_efi_variable (varname, len);
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}
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static void
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set_efi_variable_bootn (grub_uint16_t n, void *in, grub_size_t len)
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{
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wchar_t varname[20] = L"Boot0000";
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varname[7] = bin2hex (n & 0xf);
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varname[6] = bin2hex ((n >> 4) & 0xf);
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varname[5] = bin2hex ((n >> 8) & 0xf);
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varname[4] = bin2hex ((n >> 12) & 0xf);
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set_efi_variable (varname, in, len);
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}
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void
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grub_install_register_efi (grub_device_t efidir_grub_dev,
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const char *efifile_path,
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const char *efi_distributor)
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{
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grub_uint16_t *boot_order, *new_boot_order;
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grub_uint16_t *distributor16;
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grub_uint8_t *entry;
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grub_size_t distrib8_len, distrib16_len, path16_len, path8_len;
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ssize_t boot_order_len, new_boot_order_len;
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grub_uint16_t order_num = 0;
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int have_order_num = 0;
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grub_size_t max_path_length;
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grub_uint8_t *path;
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void *pathptr;
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struct grub_efi_hard_drive_device_path *hddp;
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struct grub_efi_file_path_device_path *filep;
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struct grub_efi_device_path *endp;
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get_platform ();
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if (platform != PLAT_EFI)
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grub_util_error ("%s", "no EFI routines when running in BIOS mode");
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distrib8_len = grub_strlen (efi_distributor);
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distributor16 = xmalloc ((distrib8_len + 1) * GRUB_MAX_UTF16_PER_UTF8
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* sizeof (grub_uint16_t));
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distrib16_len = grub_utf8_to_utf16 (distributor16, distrib8_len * GRUB_MAX_UTF16_PER_UTF8,
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(const grub_uint8_t *) efi_distributor,
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distrib8_len, 0);
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distributor16[distrib16_len] = 0;
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/* Windows doesn't allow to list variables so first look for bootorder to
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find if there is an entry from the same distributor. If not try sequentially
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until we find same distributor or empty spot. */
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boot_order = get_efi_variable (L"BootOrder", &boot_order_len);
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if (boot_order_len < -1)
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grub_util_error ("%s", "unexpected EFI error");
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if (boot_order_len > 0)
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{
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size_t i;
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for (i = 0; i < boot_order_len / 2; i++)
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{
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void *current = NULL;
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ssize_t current_len;
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current = get_efi_variable_bootn (i, ¤t_len);
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if (current_len < (distrib16_len + 1) * sizeof (grub_uint16_t)
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+ 6)
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{
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grub_free (current);
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continue;
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}
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if (grub_memcmp ((grub_uint16_t *) current + 3,
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distributor16,
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(distrib16_len + 1) * sizeof (grub_uint16_t)) != 0)
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{
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grub_free (current);
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continue;
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}
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order_num = i;
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have_order_num = 1;
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grub_util_info ("Found matching distributor at Boot%04x",
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order_num);
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grub_free (current);
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break;
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}
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}
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if (!have_order_num)
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{
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size_t i;
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for (i = 0; i < 0x10000; i++)
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{
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void *current = NULL;
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ssize_t current_len;
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current = get_efi_variable_bootn (i, ¤t_len);
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if (current_len == -1)
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{
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order_num = i;
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have_order_num = 1;
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grub_util_info ("Creating new entry at Boot%04x",
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order_num);
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break;
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}
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if (current_len < (distrib16_len + 1) * sizeof (grub_uint16_t)
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+ 6)
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{
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grub_free (current);
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continue;
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}
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if (grub_memcmp ((grub_uint16_t *) current + 3,
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distributor16,
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(distrib16_len + 1) * sizeof (grub_uint16_t)) != 0)
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{
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grub_free (current);
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continue;
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}
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order_num = i;
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have_order_num = 1;
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grub_util_info ("Found matching distributor at Boot%04x",
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order_num);
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grub_free (current);
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break;
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}
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}
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if (!have_order_num)
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grub_util_error ("%s", "Couldn't find free BootNNNN spot");
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path8_len = grub_strlen (efifile_path);
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max_path_length = sizeof (*hddp) + sizeof (*filep) + (path8_len * GRUB_MAX_UTF16_PER_UTF8 + 1) * sizeof (grub_uint16_t) + sizeof (*endp);
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entry = xmalloc (6 + (distrib16_len + 1) * sizeof (grub_uint16_t) + max_path_length);
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/* attributes: active. */
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entry[0] = 1;
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entry[1] = 0;
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entry[2] = 0;
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entry[3] = 0;
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grub_memcpy (entry + 6,
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distributor16,
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(distrib16_len + 1) * sizeof (grub_uint16_t));
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path = entry + 6 + (distrib16_len + 1) * sizeof (grub_uint16_t);
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pathptr = path;
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hddp = pathptr;
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grub_memset (hddp, 0, sizeof (*hddp));
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hddp->header.type = GRUB_EFI_MEDIA_DEVICE_PATH_TYPE;
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hddp->header.subtype = GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE;
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hddp->header.length = sizeof (*hddp);
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hddp->partition_number = efidir_grub_dev->disk->partition ? efidir_grub_dev->disk->partition->number + 1 : 1;
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|
if (efidir_grub_dev->disk->partition
|
||||||
|
&& grub_strcmp (efidir_grub_dev->disk->partition->partmap->name, "msdos") == 0)
|
||||||
|
{
|
||||||
|
grub_partition_t p;
|
||||||
|
|
||||||
|
p = efidir_grub_dev->disk->partition;
|
||||||
|
efidir_grub_dev->disk->partition = p->parent;
|
||||||
|
if (grub_disk_read (efidir_grub_dev->disk, 0, 440,
|
||||||
|
4, hddp->partition_signature))
|
||||||
|
grub_util_error ("%s", grub_errmsg);
|
||||||
|
efidir_grub_dev->disk->partition = p;
|
||||||
|
|
||||||
|
hddp->partmap_type = 1;
|
||||||
|
hddp->signature_type = 1;
|
||||||
|
}
|
||||||
|
else if (efidir_grub_dev->disk->partition
|
||||||
|
&& grub_strcmp (efidir_grub_dev->disk->partition->partmap->name, "gpt") == 0)
|
||||||
|
{
|
||||||
|
struct grub_gpt_partentry gptdata;
|
||||||
|
grub_partition_t p;
|
||||||
|
|
||||||
|
p = efidir_grub_dev->disk->partition;
|
||||||
|
efidir_grub_dev->disk->partition = p->parent;
|
||||||
|
if (grub_disk_read (efidir_grub_dev->disk,
|
||||||
|
p->offset, p->index,
|
||||||
|
sizeof (gptdata), &gptdata))
|
||||||
|
grub_util_error ("%s", grub_errmsg);
|
||||||
|
efidir_grub_dev->disk->partition = p;
|
||||||
|
grub_memcpy (hddp->partition_signature,
|
||||||
|
gptdata.guid, 16);
|
||||||
|
|
||||||
|
hddp->partmap_type = 2;
|
||||||
|
hddp->signature_type = 2;
|
||||||
|
}
|
||||||
|
|
||||||
|
hddp->partition_start = grub_partition_get_start (efidir_grub_dev->disk->partition)
|
||||||
|
<< (efidir_grub_dev->disk->log_sector_size - GRUB_DISK_SECTOR_BITS);
|
||||||
|
hddp->partition_size = grub_disk_get_size (efidir_grub_dev->disk)
|
||||||
|
<< (efidir_grub_dev->disk->log_sector_size - GRUB_DISK_SECTOR_BITS);
|
||||||
|
|
||||||
|
pathptr = hddp + 1;
|
||||||
|
filep = pathptr;
|
||||||
|
filep->header.type = GRUB_EFI_MEDIA_DEVICE_PATH_TYPE;
|
||||||
|
filep->header.subtype = GRUB_EFI_FILE_PATH_DEVICE_PATH_SUBTYPE;
|
||||||
|
|
||||||
|
path16_len = grub_utf8_to_utf16 (filep->path_name,
|
||||||
|
path8_len * GRUB_MAX_UTF16_PER_UTF8,
|
||||||
|
(const grub_uint8_t *) efifile_path,
|
||||||
|
path8_len, 0);
|
||||||
|
filep->path_name[path16_len] = 0;
|
||||||
|
filep->header.length = sizeof (*filep) + (path16_len + 1) * sizeof (grub_uint16_t);
|
||||||
|
pathptr = &filep->path_name[path16_len + 1];
|
||||||
|
endp = pathptr;
|
||||||
|
endp->type = GRUB_EFI_END_DEVICE_PATH_TYPE;
|
||||||
|
endp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
|
||||||
|
endp->length = sizeof (*endp);
|
||||||
|
pathptr = endp + 1;
|
||||||
|
|
||||||
|
entry[4] = (grub_uint8_t *) pathptr - path;
|
||||||
|
entry[5] = ((grub_uint8_t *) pathptr - path) >> 8;
|
||||||
|
|
||||||
|
new_boot_order = xmalloc ((boot_order_len > 0 ? boot_order_len : 0) + 2);
|
||||||
|
new_boot_order[0] = order_num;
|
||||||
|
new_boot_order_len = 1;
|
||||||
|
{
|
||||||
|
ssize_t i;
|
||||||
|
for (i = 0; i < boot_order_len / 2; i++)
|
||||||
|
if (boot_order[i] != order_num)
|
||||||
|
new_boot_order[new_boot_order_len++] = boot_order[i];
|
||||||
|
}
|
||||||
|
|
||||||
|
set_efi_variable_bootn (order_num, entry, (grub_uint8_t *) pathptr - entry);
|
||||||
|
set_efi_variable (L"BootOrder", new_boot_order, new_boot_order_len * sizeof (grub_uint16_t));
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
grub_install_register_ieee1275 (int is_prep, const char *install_device,
|
||||||
|
int partno, const char *relpath)
|
||||||
|
{
|
||||||
|
grub_util_error ("%s", "no IEEE1275 routines are available for your platform");
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
grub_install_sgi_setup (const char *install_device,
|
||||||
|
const char *imgfile, const char *destname)
|
||||||
|
{
|
||||||
|
grub_util_error ("%s", "no SGI routines are available for your platform");
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue