Hello everybody,
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.
But I got another problem: the bios won't boot if there are more than 15
heads! Is there another bios which support 255 heads? the parameter
"newharddrivesupport" doesn't work (of course - that's a bochs
parameter,
but the bios is another point)
I'd need to have something along the lines spt=63, heads=255, cyls=1023
Can somebody help me please?
Regards,
Phil
diff -urN bochs-1.4.orig/iodev/harddrv.cc bochs-1.4/iodev/harddrv.cc
--- bochs-1.4.orig/iodev/harddrv.cc Mon Mar 25 02:47:14 2002
+++ bochs-1.4/iodev/harddrv.cc Wed Jun 26 09:42:51 2002
@@ -2779,6 +2779,20 @@
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"));
}
diff -urN bochs-1.4.orig/bochs.h bochs-1.4/bochs.h
--- bochs-1.4.orig/bochs.h Tue Mar 26 14:59:36 2002
+++ bochs-1.4/bochs.h Wed Jun 26 09:34:59 2002
@@ -58,6 +58,7 @@
#else
# ifndef WIN32
# include <sys/time.h>
+# include <sys/mount.h>
# endif
# include <sys/types.h>
# include <sys/stat.h>
uhmm... what does this have to do with openssh?...> Hello everybody, > > 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. > > But I got another problem: the bios won't boot if there are more than > 15 heads! Is there another bios which support 255 heads? the parameter > "newharddrivesupport" doesn't work (of course - that's a bochs > parameter, but the bios is another point) > I'd need to have something along the lines spt=63, heads=255, cyls=1023 > > > Can somebody help me please? > > > Regards, > > Phil > > > > > diff -urN bochs-1.4.orig/iodev/harddrv.cc bochs-1.4/iodev/harddrv.cc > --- bochs-1.4.orig/iodev/harddrv.cc Mon Mar 25 02:47:14 2002 > +++ bochs-1.4/iodev/harddrv.cc Wed Jun 26 09:42:51 2002 > @@ -2779,6 +2779,20 @@ > 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")); > } > diff -urN bochs-1.4.orig/bochs.h bochs-1.4/bochs.h > --- bochs-1.4.orig/bochs.h Tue Mar 26 14:59:36 2002 > +++ bochs-1.4/bochs.h Wed Jun 26 09:34:59 2002 > @@ -58,6 +58,7 @@ > #else > # ifndef WIN32 > # include <sys/time.h> > +# include <sys/mount.h> > # endif > # include <sys/types.h> > # include <sys/stat.h> > > _______________________________________________ > openssh-unix-dev at mindrot.org mailing list > http://www.mindrot.org/mailman/listinfo/openssh-unix-dev