668 lines
13 KiB
C
668 lines
13 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
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#include <grub/partition.h>
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#include <grub/msdos_partition.h>
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#include <grub/types.h>
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#include <grub/err.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/misc.h>
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#include <grub/i18n.h>
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#include <grub/list.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <limits.h>
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#include <grub/util/windows.h>
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#include <grub/charset.h>
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#include <windows.h>
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#include <winioctl.h>
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#include <wincrypt.h>
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#ifdef __CYGWIN__
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#include <sys/cygwin.h>
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#endif
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#if SIZEOF_TCHAR == 1
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LPTSTR
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grub_util_utf8_to_tchar (const char *in)
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{
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return xstrdup (in);
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}
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char *
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grub_util_tchar_to_utf8 (LPCTSTR in)
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{
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return xstrdup (in);
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}
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#elif SIZEOF_TCHAR == 2
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LPTSTR
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grub_util_utf8_to_tchar (const char *in)
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{
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LPTSTR ret;
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size_t ssz = strlen (in);
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size_t tsz = 2 * (GRUB_MAX_UTF16_PER_UTF8 * ssz + 1);
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ret = xmalloc (tsz);
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tsz = grub_utf8_to_utf16 (ret, tsz,
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(const grub_uint8_t *) in, ssz, NULL);
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ret[tsz] = 0;
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return ret;
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}
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char *
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grub_util_tchar_to_utf8 (LPCTSTR in)
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{
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size_t ssz;
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for (ssz = 0; in[ssz]; ssz++);
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size_t tsz = GRUB_MAX_UTF8_PER_UTF16 * ssz + 1;
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grub_uint8_t *ret = xmalloc (tsz);
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*grub_utf16_to_utf8 (ret, in, ssz) = '\0';
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return (char *) ret;
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}
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#else
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#error "Unsupported TCHAR size"
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#endif
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LPTSTR
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grub_util_get_windows_path_real (const char *path)
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{
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LPTSTR fpa;
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LPTSTR tpath;
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size_t alloc, len;
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tpath = grub_util_utf8_to_tchar (path);
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alloc = PATH_MAX;
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while (1)
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{
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fpa = xmalloc (alloc * sizeof (fpa[0]));
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len = GetFullPathName (tpath, alloc, fpa, NULL);
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if (len >= alloc)
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{
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free (fpa);
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alloc = 2 * (len + 2);
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continue;
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}
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if (len == 0)
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{
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free (fpa);
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return tpath;
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}
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free (tpath);
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return fpa;
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}
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}
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#ifdef __CYGWIN__
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LPTSTR
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grub_util_get_windows_path (const char *path)
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{
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LPTSTR winpath;
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/* Workaround cygwin bugs with //?/. */
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if ((path[0] == '\\' || path[0] == '/')
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&& (path[1] == '\\' || path[1] == '/')
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&& (path[2] == '?' || path[2] == '.')
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&& (path[3] == '\\' || path[3] == '/'))
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return grub_util_get_windows_path_real (path);
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winpath = xmalloc (sizeof (winpath[0]) * PATH_MAX);
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memset (winpath, 0, sizeof (winpath[0]) * PATH_MAX);
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if (cygwin_conv_path ((sizeof (winpath[0]) == 1 ? CCP_POSIX_TO_WIN_A
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: CCP_POSIX_TO_WIN_W) | CCP_ABSOLUTE, path, winpath,
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sizeof (winpath[0]) * PATH_MAX))
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grub_util_error ("%s", _("cygwin_conv_path() failed"));
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return winpath;
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}
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#else
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LPTSTR
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grub_util_get_windows_path (const char *path)
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{
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return grub_util_get_windows_path_real (path);
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}
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#endif
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grub_uint64_t
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grub_util_get_fd_size (grub_util_fd_t hd, const char *name_in,
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unsigned *log_secsize)
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{
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grub_int64_t size = -1LL;
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int log_sector_size = 9;
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LPTSTR name = grub_util_get_windows_path (name_in);
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if (log_secsize)
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*log_secsize = log_sector_size;
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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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{
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DWORD nr;
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DISK_GEOMETRY g;
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if (! DeviceIoControl (hd, IOCTL_DISK_GET_DRIVE_GEOMETRY,
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0, 0, &g, sizeof (g), &nr, 0))
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goto fail;
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size = g.Cylinders.QuadPart;
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size *= g.TracksPerCylinder * g.SectorsPerTrack * g.BytesPerSector;
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for (log_sector_size = 0;
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(1 << log_sector_size) < g.BytesPerSector;
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log_sector_size++);
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}
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else
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{
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ULARGE_INTEGER s;
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s.LowPart = GetFileSize (hd, &s.HighPart);
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size = s.QuadPart;
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}
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fail:
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if (log_secsize)
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*log_secsize = log_sector_size;
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free (name);
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return size;
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}
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void
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grub_hostdisk_flush_initial_buffer (const char *os_dev __attribute__ ((unused)))
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{
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}
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int
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grub_util_fd_seek (grub_util_fd_t fd, grub_uint64_t off)
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{
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LARGE_INTEGER offset;
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offset.QuadPart = off;
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if (!SetFilePointerEx (fd, offset, NULL, FILE_BEGIN))
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return -1;
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return 0;
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}
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grub_util_fd_t
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grub_util_fd_open (const char *os_dev, int flags)
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{
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DWORD flg = 0, crt;
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LPTSTR dev = grub_util_get_windows_path (os_dev);
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grub_util_fd_t ret;
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if (flags & GRUB_UTIL_FD_O_WRONLY)
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flg |= GENERIC_WRITE;
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if (flags & GRUB_UTIL_FD_O_RDONLY)
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flg |= GENERIC_READ;
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if (flags & GRUB_UTIL_FD_O_CREATTRUNC)
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crt = CREATE_ALWAYS;
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else
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crt = OPEN_EXISTING;
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ret = CreateFile (dev, flg, FILE_SHARE_READ | FILE_SHARE_WRITE,
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0, crt, 0, 0);
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free (dev);
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return ret;
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}
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ssize_t
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grub_util_fd_read (grub_util_fd_t fd, char *buf, size_t len)
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{
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DWORD real_read;
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if (!ReadFile(fd, buf, len, &real_read, NULL))
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{
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grub_util_info ("read err %x", (int) GetLastError ());
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return -1;
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}
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grub_util_info ("successful read");
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return real_read;
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}
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ssize_t
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grub_util_fd_write (grub_util_fd_t fd, const char *buf, size_t len)
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{
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DWORD real_read;
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if (!WriteFile(fd, buf, len, &real_read, NULL))
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{
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grub_util_info ("write err %x", (int) GetLastError ());
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return -1;
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}
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grub_util_info ("successful write");
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return real_read;
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}
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static int allow_fd_syncs = 1;
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void
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grub_util_fd_sync (grub_util_fd_t fd)
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{
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if (allow_fd_syncs)
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FlushFileBuffers (fd);
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}
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void
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grub_util_disable_fd_syncs (void)
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{
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allow_fd_syncs = 0;
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}
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void
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grub_util_fd_close (grub_util_fd_t fd)
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{
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CloseHandle (fd);
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}
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const char *
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grub_util_fd_strerror (void)
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{
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DWORD err = GetLastError ();
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LPTSTR tstr = NULL;
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static char *last;
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char *ret, *ptr;
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free (last);
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last = 0;
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FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM
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| FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL, err, 0, (void *) &tstr,
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0, NULL);
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if (!tstr)
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return "unknown error";
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ret = grub_util_tchar_to_utf8 (tstr);
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LocalFree (tstr);
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last = ret;
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for (ptr = ret + strlen (ret) - 1;
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ptr >= ret && (*ptr == '\n' || *ptr == '\r');
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ptr--);
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ptr[1] = '\0';
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return ret;
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}
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char *
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canonicalize_file_name (const char *path)
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{
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char *ret;
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LPTSTR windows_path;
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ret = xmalloc (PATH_MAX);
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windows_path = grub_util_get_windows_path (path);
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if (!windows_path)
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return NULL;
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ret = grub_util_tchar_to_utf8 (windows_path);
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free (windows_path);
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return ret;
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}
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void
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grub_util_mkdir (const char *dir)
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{
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LPTSTR windows_name;
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windows_name = grub_util_get_windows_path (dir);
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CreateDirectory (windows_name, NULL);
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free (windows_name);
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}
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int
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grub_util_rename (const char *from, const char *to)
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{
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LPTSTR windows_from, windows_to;
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int ret;
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windows_from = grub_util_get_windows_path (from);
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windows_to = grub_util_get_windows_path (to);
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ret = !MoveFile (windows_from, windows_to);
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free (windows_from);
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free (windows_to);
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return ret;
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}
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struct grub_util_fd_dir
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{
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WIN32_FIND_DATA fd;
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HANDLE hnd;
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int is_end;
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char *last;
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};
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grub_util_fd_dir_t
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grub_util_fd_opendir (const char *name)
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{
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struct grub_util_fd_dir *ret;
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LPTSTR name_windows;
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LPTSTR pattern;
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ssize_t l;
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name_windows = grub_util_get_windows_path (name);
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for (l = 0; name_windows[l]; l++);
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for (l--; l >= 0 && (name_windows[l] == '\\' || name_windows[l] == '/'); l--);
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l++;
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pattern = xmalloc ((l + 3) * sizeof (pattern[0]));
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memcpy (pattern, name_windows, l * sizeof (pattern[0]));
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pattern[l] = '\\';
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pattern[l + 1] = '*';
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pattern[l + 2] = '\0';
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ret = xmalloc (sizeof (*ret));
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memset (ret, 0, sizeof (*ret));
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ret->hnd = FindFirstFile (pattern, &ret->fd);
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free (name_windows);
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free (pattern);
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if (ret->hnd == INVALID_HANDLE_VALUE)
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{
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DWORD err = GetLastError ();
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if (err == ERROR_FILE_NOT_FOUND)
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{
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ret->is_end = 1;
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return ret;
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}
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return NULL;
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}
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return ret;
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}
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void
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grub_util_fd_closedir (grub_util_fd_dir_t dirp)
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{
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if (dirp->hnd != INVALID_HANDLE_VALUE)
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CloseHandle (dirp->hnd);
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free (dirp->last);
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free (dirp);
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}
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grub_util_fd_dirent_t
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grub_util_fd_readdir (grub_util_fd_dir_t dirp)
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{
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char *ret;
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free (dirp->last);
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dirp->last = NULL;
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if (dirp->is_end)
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return NULL;
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ret = grub_util_tchar_to_utf8 (dirp->fd.cFileName);
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dirp->last = ret;
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if (!FindNextFile (dirp->hnd, &dirp->fd))
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dirp->is_end = 1;
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return (grub_util_fd_dirent_t) ret;
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}
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int
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grub_util_unlink (const char *name)
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{
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LPTSTR name_windows;
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int ret;
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name_windows = grub_util_get_windows_path (name);
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ret = !DeleteFile (name_windows);
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free (name_windows);
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return ret;
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}
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int
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grub_util_rmdir (const char *name)
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{
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LPTSTR name_windows;
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int ret;
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name_windows = grub_util_get_windows_path (name);
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ret = !RemoveDirectory (name_windows);
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free (name_windows);
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return ret;
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}
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#ifndef __CYGWIN__
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static char *
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get_temp_name (void)
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{
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TCHAR rt[1024];
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TCHAR *ptr;
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HCRYPTPROV hCryptProv;
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grub_uint8_t rnd[5];
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int i;
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GetTempPath (ARRAY_SIZE (rt) - 100, rt);
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if (!CryptAcquireContext (&hCryptProv,
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NULL,
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MS_DEF_PROV,
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PROV_RSA_FULL,
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CRYPT_VERIFYCONTEXT)
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|| !CryptGenRandom (hCryptProv, 5, rnd))
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grub_util_error ("%s", _("couldn't retrieve random data"));
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CryptReleaseContext (hCryptProv, 0);
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for (ptr = rt; *ptr; ptr++);
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memcpy (ptr, TEXT("\\GRUB."), sizeof (TEXT("\\GRUB.")));
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ptr += sizeof ("\\GRUB.") - 1;
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for (i = 0; i < 8; i++)
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{
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grub_size_t b = i * 5;
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grub_uint8_t r;
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grub_size_t f1 = GRUB_CHAR_BIT - b % GRUB_CHAR_BIT;
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grub_size_t f2;
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if (f1 > 5)
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f1 = 5;
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f2 = 5 - f1;
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r = (rnd[b / GRUB_CHAR_BIT] >> (b % GRUB_CHAR_BIT)) & ((1 << f1) - 1);
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if (f2)
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r |= (rnd[b / GRUB_CHAR_BIT + 1] & ((1 << f2) - 1)) << f1;
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if (r < 10)
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*ptr++ = '0' + r;
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else
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*ptr++ = 'a' + (r - 10);
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}
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*ptr = '\0';
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return grub_util_tchar_to_utf8 (rt);
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}
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char *
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grub_util_make_temporary_file (void)
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{
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char *ret = get_temp_name ();
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FILE *f;
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f = grub_util_fopen (ret, "wb");
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if (f)
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fclose (f);
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return ret;
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}
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char *
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grub_util_make_temporary_dir (void)
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{
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char *ret = get_temp_name ();
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grub_util_mkdir (ret);
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return ret;
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}
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#endif
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int
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grub_util_is_directory (const char *name)
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{
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LPTSTR name_windows;
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DWORD attr;
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name_windows = grub_util_get_windows_path (name);
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if (!name_windows)
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return 0;
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attr = GetFileAttributes (name_windows);
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grub_free (name_windows);
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return !!(attr & FILE_ATTRIBUTE_DIRECTORY);
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}
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int
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grub_util_is_regular (const char *name)
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{
|
|
LPTSTR name_windows;
|
|
DWORD attr;
|
|
|
|
name_windows = grub_util_get_windows_path (name);
|
|
if (!name_windows)
|
|
return 0;
|
|
|
|
attr = GetFileAttributes (name_windows);
|
|
grub_free (name_windows);
|
|
|
|
return !(attr & FILE_ATTRIBUTE_DIRECTORY)
|
|
&& !(attr & FILE_ATTRIBUTE_REPARSE_POINT) && attr;
|
|
}
|
|
|
|
grub_uint32_t
|
|
grub_util_get_mtime (const char *path)
|
|
{
|
|
LPTSTR name_windows;
|
|
BOOL b;
|
|
WIN32_FILE_ATTRIBUTE_DATA attr;
|
|
ULARGE_INTEGER us_ul;
|
|
|
|
name_windows = grub_util_get_windows_path (path);
|
|
if (!name_windows)
|
|
return 0;
|
|
|
|
b = GetFileAttributesEx (name_windows, GetFileExInfoStandard, &attr);
|
|
grub_free (name_windows);
|
|
|
|
if (!b)
|
|
return 0;
|
|
|
|
us_ul.LowPart = attr.ftLastWriteTime.dwLowDateTime;
|
|
us_ul.HighPart = attr.ftLastWriteTime.dwHighDateTime;
|
|
|
|
return (us_ul.QuadPart / 10000000)
|
|
- 86400ULL * 365 * (1970 - 1601)
|
|
- 86400ULL * ((1970 - 1601) / 4) + 86400ULL * ((1970 - 1601) / 100);
|
|
}
|
|
|
|
|
|
#ifdef __MINGW32__
|
|
|
|
FILE *
|
|
grub_util_fopen (const char *path, const char *mode)
|
|
{
|
|
LPTSTR tpath;
|
|
FILE *ret;
|
|
tpath = grub_util_get_windows_path (path);
|
|
#if SIZEOF_TCHAR == 1
|
|
ret = fopen (tpath, tmode);
|
|
#else
|
|
LPTSTR tmode;
|
|
tmode = grub_util_utf8_to_tchar (mode);
|
|
ret = _wfopen (tpath, tmode);
|
|
free (tmode);
|
|
#endif
|
|
free (tpath);
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
grub_util_file_sync (FILE *f)
|
|
{
|
|
HANDLE hnd;
|
|
|
|
fflush (f);
|
|
if (!allow_fd_syncs)
|
|
return;
|
|
hnd = (HANDLE) _get_osfhandle (fileno (f));
|
|
FlushFileBuffers (hnd);
|
|
}
|
|
|
|
int
|
|
grub_util_is_special_file (const char *name)
|
|
{
|
|
LPTSTR name_windows;
|
|
DWORD attr;
|
|
|
|
name_windows = grub_util_get_windows_path (name);
|
|
if (!name_windows)
|
|
return 1;
|
|
|
|
attr = GetFileAttributes (name_windows);
|
|
grub_free (name_windows);
|
|
|
|
return !!(attr & FILE_ATTRIBUTE_REPARSE_POINT) || !attr;
|
|
}
|
|
|
|
#else
|
|
|
|
void
|
|
grub_util_file_sync (FILE *f)
|
|
{
|
|
fflush (f);
|
|
if (!allow_fd_syncs)
|
|
return;
|
|
fsync (fileno (f));
|
|
}
|
|
|
|
FILE *
|
|
grub_util_fopen (const char *path, const char *mode)
|
|
{
|
|
return fopen (path, mode);
|
|
}
|
|
|
|
#endif
|