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- added patch for block device size detection from Ph. Marek

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- included it in the main branch as it is only active with block devices
This commit is contained in:
Christophe Bothamy 2002-06-26 16:45:27 +00:00
parent a926744628
commit fcc5bd67cb
3 changed files with 82 additions and 3 deletions
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3
bochs/bochs.h
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: bochs.h,v 1.66 2002-06-26 14:42:34 cbothamy Exp $
// $Id: bochs.h,v 1.67 2002-06-26 16:45:27 cbothamy Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -58,6 +58,7 @@ extern "C" {
#else
# ifndef WIN32
# include <sys/time.h>
# include <sys/mount.h>
# endif
# include <sys/types.h>
# include <sys/stat.h>

18
bochs/iodev/harddrv.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: harddrv.cc,v 1.56 2002-05-04 16:00:40 cbothamy Exp $
// $Id: harddrv.cc,v 1.57 2002-06-26 16:45:27 cbothamy Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -128,7 +128,7 @@ bx_hard_drive_c::~bx_hard_drive_c(void)
bx_hard_drive_c::init(bx_devices_c *d, bx_cmos_c *cmos)
{
BX_HD_THIS devices = d;
BX_DEBUG(("Init $Id: harddrv.cc,v 1.56 2002-05-04 16:00:40 cbothamy Exp $"));
BX_DEBUG(("Init $Id: harddrv.cc,v 1.57 2002-06-26 16:45:27 cbothamy Exp $"));
/* HARD DRIVE 0 */
@ -2829,6 +2829,20 @@ int concat_image_t::open (const char* pathname0)
if (ret) {
BX_PANIC(("fstat() returns error!"));
}
if (S_ISBLK(stat_buf.st_mode))
{
/* it's a block device. st_size will be 0, so set it to the correct size. */
if (ioctl(fd_table[i],BLKGETSIZE,&(stat_buf.st_size))==-1)
BX_PANIC(("size of block device %s can't be read",pathname));
if (stat_buf.st_size > (0x7ffffff/512))
{
BX_ERROR(("size of disk image is too big, rounded down"));
stat_buf.st_size=0x7ffffe00; /* maximum size without overflow */
}
else
stat_buf.st_size*=512; /* returned value is sectors */
/* what about an overflow here? should possibly use fstat64 */
}
if ((stat_buf.st_size % 512) != 0) {
BX_PANIC(("size of disk image must be multiple of 512 bytes"));
}

64
bochs/patches/patch.blkdevsize Normal file
View File

@ -0,0 +1,64 @@
----------------------------------------------------------------------
Patch name: patch.blkdevsize
Author: Ph. Marek
Date: June 26th 2002
Detailed description:
I'm currently working to get bochs to support block devices (eg. /dev/hda) as
harddisks. I downloaded the current release
http://prdownloads.sourceforge.net/bochs/bochs-1.4.tar.gz
and found that size detection doesn't work.
Here's a patch to get the detection working.
Patch was created with:
cvs diff -u
Apply patch to what version:
cvs checked out on June 26th 2002
Instructions:
To patch, go to main bochs directory.
Type "patch -p0 < THIS_PATCH_FILE".
----------------------------------------------------------------------
Index: iodev/harddrv.cc
===================================================================
RCS file: /cvsroot/bochs/bochs/iodev/harddrv.cc,v
retrieving revision 1.56
diff -u -r1.56 harddrv.cc
--- iodev/harddrv.cc 4 May 2002 16:00:40 -0000 1.56
+++ iodev/harddrv.cc 26 Jun 2002 16:37:46 -0000
@@ -2829,6 +2829,20 @@
if (ret) {
BX_PANIC(("fstat() returns error!"));
}
+ if (S_ISBLK(stat_buf.st_mode))
+ {
+/* it's a block device. st_size will be 0, so set it to the correct size. */
+ if (ioctl(fd_table[i],BLKGETSIZE,&(stat_buf.st_size))==-1)
+ BX_PANIC(("size of block device %s can't be read",pathname));
+ if (stat_buf.st_size > (0x7ffffff/512))
+ {
+ BX_ERROR(("size of disk image is too big, rounded down"));
+ stat_buf.st_size=0x7ffffe00; /* maximum size without overflow */
+ }
+ else
+ stat_buf.st_size*=512; /* returned value is sectors */
+ /* what about an overflow here? should possibly use fstat64 */
+ }
if ((stat_buf.st_size % 512) != 0) {
BX_PANIC(("size of disk image must be multiple of 512 bytes"));
}
Index: bochs.h
===================================================================
RCS file: /cvsroot/bochs/bochs/bochs.h,v
retrieving revision 1.66
diff -u -r1.66 bochs.h
--- bochs.h 26 Jun 2002 14:42:34 -0000 1.66
+++ bochs.h 26 Jun 2002 16:37:46 -0000
@@ -58,6 +58,7 @@
#else
# ifndef WIN32
# include <sys/time.h>
+# include <sys/mount.h>
# endif
# include <sys/types.h>
# include <sys/stat.h>