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authorDave Chapman <dave@dchapman.com>2007-03-15 22:55:36 +0000
committerDave Chapman <dave@dchapman.com>2007-03-15 22:55:36 +0000
commite17043ead72180ffa18a3b926cbabe09b5e3f903 (patch)
tree02f708ccb7a417c3f6d1a99bd9fdd3ea2941d6c5 /rbutil/sansapatcher/sansaio-win32.c
parenta42070df8566baa4a95fc04f2205a1e0aa240e00 (diff)
downloadrockbox-e17043ead72180ffa18a3b926cbabe09b5e3f903.tar.gz
rockbox-e17043ead72180ffa18a3b926cbabe09b5e3f903.zip
Initial commit of sansapatcher - an installation tool for the Sansa E200.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12792 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'rbutil/sansapatcher/sansaio-win32.c')
-rw-r--r--rbutil/sansapatcher/sansaio-win32.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/rbutil/sansapatcher/sansaio-win32.c b/rbutil/sansapatcher/sansaio-win32.c
new file mode 100644
index 0000000000..315b379a28
--- /dev/null
+++ b/rbutil/sansapatcher/sansaio-win32.c
@@ -0,0 +1,196 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id: ipodio-win32.c 12263 2007-02-10 19:49:43Z dave $
+ *
+ * Copyright (C) 2006-2007 Dave Chapman
+ *
+ * error(), lock_volume() and unlock_volume() functions and inspiration taken
+ * from:
+ * RawDisk - Direct Disk Read/Write Access for NT/2000/XP
+ * Copyright (c) 2003 Jan Kiszka
+ * http://www.stud.uni-hannover.de/user/73174/RawDisk/
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef __WIN32__
+#include <windows.h>
+#include <winioctl.h>
+#endif
+
+#include "sansaio.h"
+
+static int lock_volume(HANDLE hDisk)
+{
+ DWORD dummy;
+
+ return DeviceIoControl(hDisk, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0,
+ &dummy, NULL);
+}
+
+static int unlock_volume(HANDLE hDisk)
+{
+ DWORD dummy;
+
+ return DeviceIoControl(hDisk, FSCTL_UNLOCK_VOLUME, NULL, 0, NULL, 0,
+ &dummy, NULL);
+}
+
+void print_error(char* msg)
+{
+ char* pMsgBuf;
+
+ printf(msg);
+ FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(),
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&pMsgBuf,
+ 0, NULL);
+ printf(pMsgBuf);
+ LocalFree(pMsgBuf);
+}
+
+int sansa_open(struct sansa_t* sansa, int silent)
+{
+ DISK_GEOMETRY_EX diskgeometry_ex;
+ DISK_GEOMETRY diskgeometry;
+ unsigned long n;
+
+ sansa->dh = CreateFile(sansa->diskname, GENERIC_READ,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
+ FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING, NULL);
+
+ if (sansa->dh == INVALID_HANDLE_VALUE) {
+ if (!silent) print_error(" Error opening disk: ");
+ return -1;
+ }
+
+ if (!lock_volume(sansa->dh)) {
+ if (!silent) print_error(" Error locking disk: ");
+ return -1;
+ }
+
+ if (!DeviceIoControl(sansa->dh,
+ IOCTL_DISK_GET_DRIVE_GEOMETRY_EX,
+ NULL,
+ 0,
+ &diskgeometry_ex,
+ sizeof(diskgeometry_ex),
+ &n,
+ NULL)) {
+ if (!DeviceIoControl(sansa->dh,
+ IOCTL_DISK_GET_DRIVE_GEOMETRY,
+ NULL,
+ 0,
+ &diskgeometry,
+ sizeof(diskgeometry),
+ &n,
+ NULL)) {
+ if (!silent) print_error(" Error reading disk geometry: ");
+ return -1;
+ } else {
+ sansa->sector_size=diskgeometry.BytesPerSector;
+ }
+ } else {
+ sansa->sector_size=diskgeometry_ex.Geometry.BytesPerSector;
+ }
+
+ return 0;
+}
+
+int sansa_reopen_rw(struct sansa_t* sansa)
+{
+ /* Close existing file and re-open for writing */
+ unlock_volume(sansa->dh);
+ CloseHandle(sansa->dh);
+
+ sansa->dh = CreateFile(sansa->diskname, GENERIC_READ | GENERIC_WRITE,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
+ FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING, NULL);
+
+ if (sansa->dh == INVALID_HANDLE_VALUE) {
+ print_error(" Error opening disk: ");
+ return -1;
+ }
+
+ if (!lock_volume(sansa->dh)) {
+ print_error(" Error locking disk: ");
+ return -1;
+ }
+
+ return 0;
+}
+
+int sansa_close(struct sansa_t* sansa)
+{
+ unlock_volume(sansa->dh);
+ CloseHandle(sansa->dh);
+ return 0;
+}
+
+int sansa_alloc_buffer(unsigned char** sectorbuf, int bufsize)
+{
+ /* The ReadFile function requires a memory buffer aligned to a multiple of
+ the disk sector size. */
+ *sectorbuf = (unsigned char*)VirtualAlloc(NULL, bufsize, MEM_COMMIT, PAGE_READWRITE);
+ if (*sectorbuf == NULL) {
+ print_error(" Error allocating a buffer: ");
+ return -1;
+ }
+ return 0;
+}
+
+int sansa_seek(struct sansa_t* sansa, loff_t pos)
+{
+ LARGE_INTEGER li;
+
+ li.QuadPart = pos;
+
+ li.LowPart = SetFilePointer (sansa->dh, li.LowPart, &li.HighPart, FILE_BEGIN);
+
+ if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
+ print_error(" Seek error ");
+ return -1;
+ }
+ return 0;
+}
+
+int sansa_read(struct sansa_t* sansa, unsigned char* buf, int nbytes)
+{
+ unsigned long count;
+
+ if (!ReadFile(sansa->dh, buf, nbytes, &count, NULL)) {
+ print_error(" Error reading from disk: ");
+ return -1;
+ }
+
+ return count;
+}
+
+int sansa_write(struct sansa_t* sansa, unsigned char* buf, int nbytes)
+{
+ unsigned long count;
+
+ if (!WriteFile(sansa->dh, buf, nbytes, &count, NULL)) {
+ print_error(" Error writing to disk: ");
+ return -1;
+ }
+
+ return count;
+}