win32: physical drive support (initial patch by kazu)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2311 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/block-raw.c b/block-raw.c
index 8cf1988..2b6f441 100644
--- a/block-raw.c
+++ b/block-raw.c
@@ -838,6 +838,7 @@
#define FTYPE_FILE 0
#define FTYPE_CD 1
+#define FTYPE_HARDDISK 2
typedef struct BDRVRawState {
HANDLE hfile;
@@ -1098,6 +1099,9 @@
BDRVRawState *s = bs->opaque;
LARGE_INTEGER l;
ULARGE_INTEGER available, total, total_free;
+ DISK_GEOMETRY dg;
+ DWORD count;
+ BOOL status;
switch(s->type) {
case FTYPE_FILE:
@@ -1110,6 +1114,14 @@
return -EIO;
l.QuadPart = total.QuadPart;
break;
+ case FTYPE_HARDDISK:
+ status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY,
+ NULL, 0, &dg, sizeof(dg), &count, NULL);
+ if (status != FALSE) {
+ l.QuadPart = dg.Cylinders.QuadPart * dg.TracksPerCylinder
+ * dg.SectorsPerTrack * dg.BytesPerSector;
+ }
+ break;
default:
return -EIO;
}
@@ -1216,6 +1228,8 @@
if (strstart(filename, "\\\\.\\", &p) ||
strstart(filename, "//./", &p)) {
+ if (stristart(p, "PhysicalDrive", NULL))
+ return FTYPE_HARDDISK;
snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]);
type = GetDriveType(s->drive_path);
if (type == DRIVE_CDROM)
@@ -1248,7 +1262,7 @@
}
}
s->type = find_device_type(bs, filename);
-
+
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
access_flags = GENERIC_READ | GENERIC_WRITE;
} else {
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 655e151..0423ef06 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -1079,14 +1079,25 @@
@subsubsection Windows
-On Windows you can use any host drives as QEMU drive. The prefered
-syntax is the driver letter (e.g. @file{d:}). The alternate syntax
-@file{\\.\d:} is supported. @file{/dev/cdrom} is supported as an alias
-to the first CDROM drive.
+@table @code
+@item CD
+The prefered syntax is the drive letter (e.g. @file{d:}). The
+alternate syntax @file{\\.\d:} is supported. @file{/dev/cdrom} is
+supported as an alias to the first CDROM drive.
Currently there is no specific code to handle removable medias, so it
is better to use the @code{change} or @code{eject} monitor commands to
change or eject media.
+@item Hard disks
+Hard disks can be used with the syntax: @file{\\.\PhysicalDriveN}
+where @var{N} is the drive number (0 is the first hard disk).
+
+WARNING: unless you know what you do, it is better to only make
+READ-ONLY accesses to the hard disk otherwise you may corrupt your
+host data (use the @option{-snapshot} command line so that the
+modifications are written in a temporary file).
+@end table
+
@subsubsection Mac OS X
