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-rw-r--r--grub-core/osdep/windows/platform.c426
1 files changed, 426 insertions, 0 deletions
diff --git a/grub-core/osdep/windows/platform.c b/grub-core/osdep/windows/platform.c
new file mode 100644
index 0000000..253f8d1
--- /dev/null
+++ b/grub-core/osdep/windows/platform.c
@@ -0,0 +1,426 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config-util.h>
+
+#include <windows.h>
+#include <grub/util/install.h>
+#include <grub/util/misc.h>
+#include <grub/efi/api.h>
+#include <grub/charset.h>
+#include <grub/gpt_partition.h>
+
+#define GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR L"{8be4df61-93ca-11d2-aa0d-00e098032b8c}"
+
+static enum { PLAT_UNK, PLAT_BIOS, PLAT_EFI } platform;
+static DWORD (WINAPI * func_GetFirmwareEnvironmentVariableW) (LPCWSTR lpName,
+ LPCWSTR lpGuid,
+ PVOID pBuffer,
+ DWORD nSize);
+static BOOL (WINAPI * func_SetFirmwareEnvironmentVariableW) (LPCWSTR lpName,
+ LPCWSTR lpGuid,
+ PVOID pBuffer,
+ DWORD nSize);
+static void (WINAPI * func_GetNativeSystemInfo) (LPSYSTEM_INFO lpSystemInfo);
+
+static int
+get_efi_privilegies (void)
+{
+ int ret = 1;
+ HANDLE hSelf;
+ TOKEN_PRIVILEGES tkp;
+
+ if (!OpenProcessToken (GetCurrentProcess(),
+ TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hSelf))
+ return 0;
+
+ LookupPrivilegeValue (NULL, SE_SYSTEM_ENVIRONMENT_NAME,
+ &tkp.Privileges[0].Luid);
+ tkp.PrivilegeCount = 1;
+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+ if (!AdjustTokenPrivileges (hSelf, FALSE, &tkp, 0, NULL, 0))
+ ret = 0;
+ if (GetLastError () != ERROR_SUCCESS)
+ ret = 0;
+ CloseHandle (hSelf);
+ return 1;
+}
+
+static void
+get_platform (void)
+{
+ HMODULE kernel32;
+ char buffer[256];
+
+ if (platform != PLAT_UNK)
+ return;
+
+ kernel32 = GetModuleHandle(TEXT("kernel32.dll"));
+ if (!kernel32)
+ {
+ platform = PLAT_BIOS;
+ return;
+ }
+
+ func_GetFirmwareEnvironmentVariableW = (void *)
+ GetProcAddress (kernel32, "GetFirmwareEnvironmentVariableW");
+ func_SetFirmwareEnvironmentVariableW = (void *)
+ GetProcAddress (kernel32, "SetFirmwareEnvironmentVariableW");
+ func_GetNativeSystemInfo = (void *)
+ GetProcAddress (kernel32, "GetNativeSystemInfo");
+ if (!func_GetNativeSystemInfo)
+ func_GetNativeSystemInfo = GetSystemInfo;
+ if (!func_GetFirmwareEnvironmentVariableW
+ || !func_SetFirmwareEnvironmentVariableW)
+ {
+ platform = PLAT_BIOS;
+ return;
+ }
+
+ if (!get_efi_privilegies ())
+ {
+ grub_util_warn (_("Insufficient privileges to access firmware, assuming BIOS"));
+ platform = PLAT_BIOS;
+ }
+
+ if (!func_GetFirmwareEnvironmentVariableW (L"BootOrder", GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR,
+ buffer, sizeof (buffer))
+ && GetLastError () == ERROR_INVALID_FUNCTION)
+ {
+ platform = PLAT_BIOS;
+ return;
+ }
+ platform = PLAT_EFI;
+ return;
+}
+
+const char *
+grub_install_get_default_x86_platform (void)
+{
+ SYSTEM_INFO si;
+
+ get_platform ();
+ if (platform != PLAT_EFI)
+ return "i386-pc";
+
+ /* EFI */
+ /* Assume 64-bit in case of failure. */
+ si.wProcessorArchitecture = PROCESSOR_ARCHITECTURE_AMD64;
+ func_GetNativeSystemInfo (&si);
+ if (si.wProcessorArchitecture != PROCESSOR_ARCHITECTURE_INTEL)
+ return "x86_64-efi";
+ else
+ return "i386-efi";
+}
+
+static void *
+get_efi_variable (const wchar_t *varname, ssize_t *len)
+{
+ void *ret = NULL;
+ size_t alloc_size = 256, read_size;
+ get_platform ();
+ while (1)
+ {
+ DWORD err;
+ ret = xmalloc (alloc_size);
+ read_size = func_GetFirmwareEnvironmentVariableW (varname, GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR,
+ ret, alloc_size);
+ err = GetLastError ();
+ if (read_size)
+ {
+ *len = read_size;
+ return ret;
+ }
+ if (err == ERROR_INSUFFICIENT_BUFFER
+ && alloc_size * 2 != 0)
+ {
+ alloc_size *= 2;
+ free (ret);
+ continue;
+ }
+ if (err == ERROR_ENVVAR_NOT_FOUND)
+ {
+ *len = -1;
+ return NULL;
+ }
+ *len = -2;
+ return NULL;
+ }
+}
+
+static void
+set_efi_variable (const wchar_t *varname, void *in, grub_size_t len)
+{
+ get_platform ();
+ func_SetFirmwareEnvironmentVariableW (varname, GRUB_EFI_GLOBAL_VARIABLE_GUID_WINDOWS_STR,
+ in, len);
+}
+
+static char
+bin2hex (int v)
+{
+ if (v < 10)
+ return '0' + v;
+ return 'A' + v - 10;
+}
+
+static void *
+get_efi_variable_bootn (grub_uint16_t n, ssize_t *len)
+{
+ wchar_t varname[20] = L"Boot0000";
+ varname[7] = bin2hex (n & 0xf);
+ varname[6] = bin2hex ((n >> 4) & 0xf);
+ varname[5] = bin2hex ((n >> 8) & 0xf);
+ varname[4] = bin2hex ((n >> 12) & 0xf);
+ return get_efi_variable (varname, len);
+}
+
+static void
+set_efi_variable_bootn (grub_uint16_t n, void *in, grub_size_t len)
+{
+ wchar_t varname[20] = L"Boot0000";
+ varname[7] = bin2hex (n & 0xf);
+ varname[6] = bin2hex ((n >> 4) & 0xf);
+ varname[5] = bin2hex ((n >> 8) & 0xf);
+ varname[4] = bin2hex ((n >> 12) & 0xf);
+ set_efi_variable (varname, in, len);
+}
+
+int
+grub_install_register_efi (grub_device_t efidir_grub_dev,
+ const char *efifile_path,
+ const char *efi_distributor)
+{
+ grub_uint16_t *boot_order, *new_boot_order;
+ grub_uint16_t *distributor16;
+ grub_uint8_t *entry;
+ grub_size_t distrib8_len, distrib16_len, path16_len, path8_len;
+ ssize_t boot_order_len, new_boot_order_len;
+ grub_uint16_t order_num = 0;
+ int have_order_num = 0;
+ grub_size_t max_path_length;
+ grub_uint8_t *path;
+ void *pathptr;
+ struct grub_efi_hard_drive_device_path *hddp;
+ struct grub_efi_file_path_device_path *filep;
+ struct grub_efi_device_path *endp;
+
+ get_platform ();
+ if (platform != PLAT_EFI)
+ grub_util_error ("%s", _("no EFI routines are available when running in BIOS mode"));
+
+ distrib8_len = grub_strlen (efi_distributor);
+ distributor16 = xcalloc (distrib8_len + 1,
+ GRUB_MAX_UTF16_PER_UTF8 * sizeof (grub_uint16_t));
+ distrib16_len = grub_utf8_to_utf16 (distributor16, distrib8_len * GRUB_MAX_UTF16_PER_UTF8,
+ (const grub_uint8_t *) efi_distributor,
+ distrib8_len, 0);
+ distributor16[distrib16_len] = 0;
+
+ /* Windows doesn't allow to list variables so first look for bootorder to
+ find if there is an entry from the same distributor. If not try sequentially
+ until we find same distributor or empty spot. */
+ boot_order = get_efi_variable (L"BootOrder", &boot_order_len);
+ if (boot_order_len < -1)
+ grub_util_error ("%s", _("unexpected EFI error"));
+ if (boot_order_len > 0)
+ {
+ size_t i;
+ for (i = 0; i < boot_order_len / 2; i++)
+ {
+ void *current = NULL;
+ ssize_t current_len;
+ current = get_efi_variable_bootn (i, &current_len);
+ if (current_len < 0)
+ continue; /* FIXME Should we abort on error? */
+ if (current_len < (distrib16_len + 1) * sizeof (grub_uint16_t)
+ + 6)
+ {
+ grub_free (current);
+ continue;
+ }
+ if (grub_memcmp ((grub_uint16_t *) current + 3,
+ distributor16,
+ (distrib16_len + 1) * sizeof (grub_uint16_t)) != 0)
+ {
+ grub_free (current);
+ continue;
+ }
+ order_num = i;
+ have_order_num = 1;
+ grub_util_info ("Found matching distributor at Boot%04x",
+ order_num);
+ grub_free (current);
+ break;
+ }
+ }
+ if (!have_order_num)
+ {
+ size_t i;
+ for (i = 0; i < 0x10000; i++)
+ {
+ void *current = NULL;
+ ssize_t current_len;
+ current = get_efi_variable_bootn (i, &current_len);
+ if (current_len < -1)
+ continue; /* FIXME Should we abort on error? */
+ if (current_len == -1)
+ {
+ if (!have_order_num)
+ {
+ order_num = i;
+ have_order_num = 1;
+ grub_util_info ("Creating new entry at Boot%04x",
+ order_num);
+ }
+ continue;
+ }
+ if (current_len < (distrib16_len + 1) * sizeof (grub_uint16_t)
+ + 6)
+ {
+ grub_free (current);
+ continue;
+ }
+ if (grub_memcmp ((grub_uint16_t *) current + 3,
+ distributor16,
+ (distrib16_len + 1) * sizeof (grub_uint16_t)) != 0)
+ {
+ grub_free (current);
+ continue;
+ }
+ order_num = i;
+ have_order_num = 1;
+ grub_util_info ("Found matching distributor at Boot%04x",
+ order_num);
+ grub_free (current);
+ break;
+ }
+ }
+ if (!have_order_num)
+ grub_util_error ("%s", _("Couldn't find a free BootNNNN slot"));
+ path8_len = grub_strlen (efifile_path);
+ max_path_length = sizeof (*hddp) + sizeof (*filep) + (path8_len * GRUB_MAX_UTF16_PER_UTF8 + 1) * sizeof (grub_uint16_t) + sizeof (*endp);
+ entry = xmalloc (6 + (distrib16_len + 1) * sizeof (grub_uint16_t) + max_path_length);
+ /* attributes: active. */
+ entry[0] = 1;
+ entry[1] = 0;
+ entry[2] = 0;
+ entry[3] = 0;
+ grub_memcpy (entry + 6,
+ distributor16,
+ (distrib16_len + 1) * sizeof (grub_uint16_t));
+
+ path = entry + 6 + (distrib16_len + 1) * sizeof (grub_uint16_t);
+ pathptr = path;
+
+ hddp = pathptr;
+ grub_memset (hddp, 0, sizeof (*hddp));
+ hddp->header.type = GRUB_EFI_MEDIA_DEVICE_PATH_TYPE;
+ hddp->header.subtype = GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE;
+ hddp->header.length = sizeof (*hddp);
+ hddp->partition_number = efidir_grub_dev->disk->partition ? efidir_grub_dev->disk->partition->number + 1 : 1;
+ 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_native_sectors (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));
+
+ return 0;
+}
+
+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"));
+}
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