328 lines
8.1 KiB
C
328 lines
8.1 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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 <config.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <dirent.h>
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#include <errno.h>
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#include <error.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#ifdef HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#include <grub/types.h>
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#include <grub/util/misc.h>
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/emu/misc.h>
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#include <grub/emu/hostdisk.h>
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#include <grub/emu/getroot.h>
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#include <grub/charset.h>
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#include <grub/util/windows.h>
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#include <windows.h>
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#include <winioctl.h>
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#if SIZEOF_TCHAR == 1
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#define tcsnicmp strncasecmp
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#define tclen strlen
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#elif SIZEOF_TCHAR == 2
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#define tcsnicmp wcsnicmp
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#define tclen wcslen
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#endif
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char **
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grub_guess_root_devices (const char *dir)
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{
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char **os_dev = NULL;
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TCHAR *dirwindows, *mntpointwindows;
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TCHAR *ptr;
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TCHAR volumename[100];
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size_t mntpointwindows_sz;
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dirwindows = grub_util_get_windows_path (dir);
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if (!dirwindows)
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return 0;
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mntpointwindows_sz = strlen (dir) * 2 + 1;
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mntpointwindows = xmalloc ((mntpointwindows_sz + 1) * sizeof (mntpointwindows[0]));
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if (!GetVolumePathName (dirwindows,
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mntpointwindows,
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mntpointwindows_sz))
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{
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free (dirwindows);
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free (mntpointwindows);
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return 0;
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}
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if (!mntpointwindows[0])
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{
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free (dirwindows);
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free (mntpointwindows);
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return 0;
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}
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for (ptr = mntpointwindows; *ptr; ptr++);
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if (*(ptr - 1) != '\\')
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{
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*ptr = '\\';
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*(ptr + 1) = '\0';
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}
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if (!GetVolumeNameForVolumeMountPoint (mntpointwindows,
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volumename,
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ARRAY_SIZE (volumename)))
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{
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free (dirwindows);
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free (mntpointwindows);
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return 0;
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}
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os_dev = xmalloc (2 * sizeof (os_dev[0]));
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for (ptr = volumename; *ptr; ptr++);
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while (ptr > volumename && *(ptr - 1) == '\\')
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*--ptr = '\0';
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os_dev[0] = grub_util_tchar_to_utf8 (volumename);
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free (dirwindows);
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free (mntpointwindows);
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if (!os_dev[0])
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{
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free (os_dev);
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return 0;
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}
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os_dev[1] = 0;
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return os_dev;
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}
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char *
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grub_util_part_to_disk (const char *os_dev,
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struct stat *st __attribute__ ((unused)),
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int *is_part)
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{
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HANDLE hd;
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LPTSTR name = grub_util_get_windows_path (os_dev);
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VOLUME_DISK_EXTENTS exts;
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DWORD extsbytes;
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char *ret;
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if (((name[0] == '/') || (name[0] == '\\')) &&
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((name[1] == '/') || (name[1] == '\\')) &&
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((name[2] == '.') || (name[2] == '?')) &&
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((name[3] == '/') || (name[3] == '\\'))
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&& (tcsnicmp (name + 4, TEXT("PhysicalDrive"), sizeof ("PhysicalDrive") - 1) == 0
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|| tcsnicmp (name + 4, TEXT("Harddisk"), sizeof ("Harddisk") - 1) == 0
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|| ((name[4] == 'A' || name[4] == 'a' || name[4] == 'B' || name[4] == 'b')
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&& name[5] == ':' && name[6] == '\0')))
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{
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grub_util_info ("Matches full disk pattern");
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ret = grub_util_tchar_to_utf8 (name);
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free (name);
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return ret;
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}
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hd = CreateFile (name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
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0, OPEN_EXISTING, 0, 0);
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if (hd == INVALID_HANDLE_VALUE)
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{
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grub_util_info ("CreateFile failed");
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ret = grub_util_tchar_to_utf8 (name);
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free (name);
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return ret;
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}
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if (!DeviceIoControl(hd, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
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NULL, 0, &exts, sizeof (exts), &extsbytes, NULL))
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{
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grub_util_info ("IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS failed");
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ret = grub_util_tchar_to_utf8 (name);
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CloseHandle (hd);
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free (name);
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return ret;
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}
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CloseHandle (hd);
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*is_part = 1;
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free (name);
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return xasprintf ("\\\\?\\PhysicalDrive%lu", (unsigned long) exts.Extents[0].DiskNumber);
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}
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enum grub_dev_abstraction_types
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grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused)))
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{
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return GRUB_DEV_ABSTRACTION_NONE;
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}
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int
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grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)),
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enum grub_dev_abstraction_types ab __attribute__ ((unused)))
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{
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return 0;
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}
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char *
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grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused)))
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{
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return NULL;
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}
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grub_disk_addr_t
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grub_util_find_partition_start_os (const char *os_dev)
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{
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HANDLE hd;
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LPTSTR name = grub_util_get_windows_path (os_dev);
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VOLUME_DISK_EXTENTS exts;
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DWORD extsbytes;
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char *ret;
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if (((name[0] == '/') || (name[0] == '\\')) &&
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((name[1] == '/') || (name[1] == '\\')) &&
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((name[2] == '.') || (name[2] == '?')) &&
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((name[3] == '/') || (name[3] == '\\'))
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&& (tcsnicmp (name + 4, TEXT("PhysicalDrive"), sizeof ("PhysicalDrive") - 1) == 0
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|| tcsnicmp (name + 4, TEXT("Harddisk"), sizeof ("Harddisk") - 1) == 0
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|| ((name[4] == 'A' || name[4] == 'a' || name[4] == 'B' || name[4] == 'b')
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&& name[5] == ':' && name[6] == '\0')))
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{
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ret = grub_util_tchar_to_utf8 (name);
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free (name);
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return 0;
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}
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hd = CreateFile (name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
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0, OPEN_EXISTING, 0, 0);
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if (hd == INVALID_HANDLE_VALUE)
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{
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ret = grub_util_tchar_to_utf8 (name);
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free (name);
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return 0;
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}
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if (!DeviceIoControl(hd, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
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NULL, 0, &exts, sizeof (exts), &extsbytes, NULL))
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{
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ret = grub_util_tchar_to_utf8 (name);
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CloseHandle (hd);
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free (name);
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return 0;
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}
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CloseHandle (hd);
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free (name);
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return exts.Extents[0].StartingOffset.QuadPart / 512;
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}
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char *
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grub_make_system_path_relative_to_its_root (const char *path)
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{
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TCHAR *dirwindows, *mntpointwindows;
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TCHAR *ptr;
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TCHAR volumename[100];
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size_t mntpointwindows_sz;
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size_t offset, flen;
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TCHAR *ret;
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char *cret;
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dirwindows = grub_util_get_windows_path (path);
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if (!dirwindows)
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return xstrdup (path);
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mntpointwindows_sz = strlen (path) * 2 + 1;
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mntpointwindows = xmalloc ((mntpointwindows_sz + 1) * sizeof (mntpointwindows[0]));
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if (!GetVolumePathName (dirwindows,
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mntpointwindows,
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mntpointwindows_sz))
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{
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offset = 0;
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if (dirwindows[0] && dirwindows[1] == ':')
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offset = 2;
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}
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offset = tclen (mntpointwindows);
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free (mntpointwindows);
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flen = tclen (dirwindows);
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if (offset > flen)
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{
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offset = 0;
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if (dirwindows[0] && dirwindows[1] == ':')
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offset = 2;
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}
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ret = xmalloc (sizeof (ret[0]) * (flen - offset + 2));
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if (dirwindows[offset] != '\\'
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&& dirwindows[offset] != '/'
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&& dirwindows[offset])
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{
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ret[0] = '\\';
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memcpy (ret + 1, dirwindows + offset, (flen - offset + 1) * sizeof (ret[0]));
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}
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else
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memcpy (ret, dirwindows + offset, (flen - offset + 1) * sizeof (ret[0]));
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free (dirwindows);
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for (ptr = ret; *ptr; ptr++)
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if (*ptr == '\\')
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*ptr = '/';
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cret = grub_util_tchar_to_utf8 (ret);
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free (ret);
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return cret;
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}
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int
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grub_util_biosdisk_is_floppy (grub_disk_t disk)
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{
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int ret;
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const char *dname;
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LPTSTR name;
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dname = grub_util_biosdisk_get_osdev (disk);
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if (!dname)
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return 0;
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name = grub_util_get_windows_path (dname);
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ret = (((name[0] == '/') || (name[0] == '\\')) &&
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((name[1] == '/') || (name[1] == '\\')) &&
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((name[2] == '.') || (name[2] == '?')) &&
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((name[3] == '/') || (name[3] == '\\'))
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&& (name[4] == 'A' || name[4] == 'a' || name[4] == 'B' || name[4] == 'b')
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&& name[5] == ':' && name[6] == '\0');
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free (name);
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return ret;
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}
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