Commit Graph

271 Commits

Author SHA1 Message Date
Christoph Hellwig
508c7cb3fa block: add bdrv_probe_device method
Add a bdrv_probe_device method to all BlockDriver instances implementing
host devices to move matching of host device types into the actual drivers.
For now we keep exacly the old matching behaviour based on the devices names,
although we really should have better detetion methods based on device
information in the future.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2009-06-15 14:04:22 +02:00
Christoph Hellwig
f3a5d3f8a1 raw-posix: split hdev drivers
Instead of declaring one BlockDriver for all host devices declared one
for each type:  a generic one for normal disk devices, a Linux floppy
driver and a CDROM driver for Linux and FreeBSD.  This gets rid of a lot
of messy ifdefs and switching based on the type in the various removal
device methods.

block.c grows a new method to find the correct host device driver based
on OS-sepcific criteria, which will later into the actual drivers in a
later patch in this series.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2009-06-15 13:55:19 +02:00
Christoph Hellwig
c16b5a2ca0 fully split aio_pool from BlockDriver
Now that we have a separate aio pool structure we can remove those
aio pool details from BlockDriver.

Every driver supporting AIO now needs to declare a static AIOPool
with the aiocb size and the cancellation method.  This cleans up the
current code considerably and will make it cleaner and more obvious
to support two different aio implementations behind a single
BlockDriver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-27 09:46:03 -05:00
Kevin Wolf
91a073a975 Drop bdrv_create2
This patch converts the remaining users of bdrv_create2 to bdrv_create and
removes the now unused function.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-27 09:45:23 -05:00
Kevin Wolf
0e7e1989f7 Convert all block drivers to new bdrv_create
Now we can make use of the newly introduced option structures. Instead of
having bdrv_create carry more and more parameters (which are format specific in
most cases), just pass a option structure as defined by the driver itself.

bdrv_create2() contains an emulation of the old interface to simplify the
transition.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22 10:50:31 -05:00
Anthony Liguori
c833ab7351 Fix segv when passing an unknown protocol
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22 10:50:29 -05:00
Anthony Liguori
5efa9d5a8b Convert block infrastructure to use new module init functionality
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-14 16:13:41 -05:00
Kevin Wolf
fbb7b4e080 Improve block range checks
This patch makes the range checks for block requests more strict: It fixes a
potential integer overflow and checks for negative offsets. Also, it adds the
check for compressed writes.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08 16:02:18 -05:00
aliguori
e268ca5232 implement qemu_blockalign (Stefano Stabellini)
this patch adds a buffer_alignment field to BlockDriverState and
implements a qemu_blockalign function that uses that field to allocate a
memory aligned buffer to be used by the block driver.
buffer_alignment is initialized to 512 but each block driver can set
a different value (at the moment none of them do).
This patch modifies ide.c, block-qcow.c, block-qcow2.c and block.c to
use qemu_blockalign instead of qemu_memalign.
There is only one place left that still uses qemu_memalign to allocate
buffers used by block drivers that is posix-aio-compat:handle_aiocb_rw
because it is not possible to get the BlockDriverState from that
function. However I think it is not important because posix-aio-compat
already deals with driver specific code so it is supposed to know its
own needs.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7229 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-22 20:20:00 +00:00
aliguori
e97fc193e1 Introduce bdrv_check (Kevin Wolf)
From: Kevin Wolf <kwolf@redhat.com>

Introduce a new bdrv_check function pointer for block drivers. Modify qcow2 to
return an error status in check_refcounts(), so it can implement bdrv_check.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7214 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-21 23:11:50 +00:00
blueswir1
3f4cb3d37f Fix OpenSolaris gcc4 warnings: iovec type mismatches, missing 'static'
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7103 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-13 16:31:01 +00:00
aliguori
ceb42de899 native preadv/pwritev support (Christoph Hellwig)
This ties up the preadv/pwritev syscalls to qemu if they are declared in
unistd.h.  This is the case currently on at least NetBSD and OpenBSD and
will hopefully soon be the case on Linux.

Thanks to Blue Swirl and Gerd Hoffmann for the configure autodetection
of preadv/pwritev.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7021 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-07 18:43:28 +00:00
aliguori
f141eafe28 push down vector linearization to posix-aio-compat.c (Christoph Hellwig)
Make all AIO requests vectored and defer linearization until the actual
I/O thread.  This prepares for using native preadv/pwritev.

Also enables asynchronous direct I/O by handling that case in the I/O thread.

Qcow and qcow2 propably want to be adopted to directly deal with multi-segment
requests, but that can be implemented later.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7020 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-07 18:43:24 +00:00
aliguori
c87c067293 remove bdrv_aio_read/bdrv_aio_write (Christoph Hellwig)
Always use the vectored APIs to reduce code churn once we switch the BlockDriver
API to be vectored.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7019 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-07 18:43:20 +00:00
aliguori
178e08a58f Fix savevm after BDRV_FILE size enforcement
We now enforce that you cannot write beyond the end of a non-growable file.
qcow2 files are not growable but we rely on them being growable to do
savevm/loadvm.  Temporarily allow them to be growable by introducing a new
API specifically for savevm read/write operations.

Reported-by: malc
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6994 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-05 19:10:55 +00:00
aliguori
081501dace check for bs->drv in bdrv_flush (Christoph Hellwig)
All the bdrv_ helpers should check for bs->drv being zero as that means
there is no backend image open.  bdrv_flush fails to perform that check
and can thus cause NULL pointer dereferences.

Found using qemu-io.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6943 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-29 01:31:51 +00:00
aliguori
999dec57f6 remove dead code in bdrv_check_request (Christoph Hellwig)
Remove code dealing with negative sector numbers for byte access in
bdrv_check_request as sector numbers can't ever be negative.

Previously we supported negative sector counts for byte access, but
never sector numbers.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6942 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-29 01:31:48 +00:00
aliguori
5eb456396d block: support known backing format for image create and open (Uri Lublin)
Added a backing_format field to BlockDriverState.
Added bdrv_create2 and drv->bdrv_create2 to create an image with
a known backing file format.
Upon bdrv_open2 if backing format is known use it, instead of
probing the (backing) image.

Signed-off-by: Uri Lublin <uril@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6908 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-28 17:55:10 +00:00
aliguori
221f715d90 new scsi-generic abstraction, use SG_IO (Christoph Hellwig)
Okay, I started looking into how to handle scsi-generic I/O in the
new world order.

I think the best is to use the SG_IO ioctl instead of the read/write
interface as that allows us to support scsi passthrough on disk/cdrom
devices, too.  See Hannes patch on the kvm list from August for an
example.

Now that we always do ioctls we don't need another abstraction than
bdrv_ioctl for the synchronous requests for now, and for asynchronous
requests I've added a aio_ioctl abstraction keeping it simple.

Long-term we might want to move the ops to a higher-level abstraction
and let the low-level code fill out the request header, but I'm lazy
enough to leave that to the people trying to support scsi-passthrough
on a non-Linux OS.

Tested lightly by issuing various sg_ commands from sg3-utils in a guest
to a host CDROM device.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6895 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-28 17:28:41 +00:00
aliguori
c240b9af59 Fix vectored aio bounce handling immediate errors (Avi Kivity)
If a bounced vectored aio fails immediately (the inner aio submission
returning NULL) then the bounce handler erronously returns an aio
request which will never be completed (and which crashes when cancelled).

Fix by detecting that the inner request has failed and propagating the
error.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6892 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-28 16:11:20 +00:00
aliguori
3fb94d56c6 Use vectored aiocb storage to store vector translation state (Avi Kivity)
Now that we have a dedicated acb pool for vector translation acbs, we can
store the vector translation state in the acbs instead of in an external
structure.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6873 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-20 18:26:12 +00:00
aliguori
c07a9008ac Convert vectored aio emulation to use a dedicated pool (Avi Kivity)
This allows us to remove a hack in the vectored aio cancellation code.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6871 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-20 18:26:03 +00:00
aliguori
6bbff9a0b4 Refactor aio callback allocation to use an aiocb pool (Avi Kivity)
Move the AIOCB allocation code to use a dedicate structure, AIOPool.  AIOCB
specific information, such as the AIOCB size and cancellation routine, is
moved into the pool.

At present, there is exactly one pool per block format driver, maintaining
the status quo.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6870 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-20 18:25:59 +00:00
aliguori
eda578e559 Drop internal bdrv_pread()/bdrv_pwrite() APIs (Avi Kivity)
Now that scsi generic no longer uses bdrv_pread() and bdrv_pwrite(), we can
drop the corresponding internal APIs, which overlap bdrv_read()/bdrv_write()
and, being byte oriented, are unnatural for a block device.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6824 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-12 19:57:16 +00:00
aliguori
04eeb8b6d6 Add internal scsi generic block API (Avi Kivity)
Add an internal API for the generic block layer to send scsi generic commands
to block format driver.  This means block format drivers no longer need
to consider overloaded nb_sectors parameters.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6823 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-12 19:57:12 +00:00
aliguori
7d78066926 Add specialized block driver scsi generic API (Avi Kivity)
When a scsi device is backed by a scsi generic device instead of an
ordinary host block device, the block API is abused in a couple of annoying
ways:

 - nb_sectors is negative, and specifies a byte count instead of a sector count
 - offset is ignored, since scsi-generic is essentially a packet protocol

This overloading makes hacking the block layer difficult.  Remove it by
introducing a new explicit API for scsi-generic devices.  The new API
is still backed by the old implementation, but at least the users are
insulated.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6822 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-12 19:57:08 +00:00
aliguori
ebf53fcdae Revert r6406
This series is broken by design as it requires expensive IO operations at
open time causing very long delays when starting a virtual machine for the
first time.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6814 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-11 20:05:29 +00:00
aliguori
70240ca680 Revert r6407
This series is broken by design as it requires expensive IO operations at
open time causing very long delays when starting a virtual machine for the
first time.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6813 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-11 20:05:25 +00:00
aliguori
49dc768d4c Fix windows build and clean up use of <windows.h>
We want to globally define WIN_LEAN_AND_MEAN and WINVER to particular values so
let's do it in OS_CFLAGS.

Then, we can pepper in windows.h includes where using #includes that require it.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6783 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-08 16:26:59 +00:00
blueswir1
179a2c1971 Rename _BSD to HOST_BSD so that it's more obvious that it's defined by configure
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6775 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-08 08:23:32 +00:00
blueswir1
c5e97233e8 Support for DragonFly BSD (Hasso Tepper)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6746 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-07 20:06:23 +00:00
aliguori
376253ece4 monitor: Rework API (Jan Kiszka)
Refactor the monitor API and prepare it for decoupled terminals:
term_print functions are renamed to monitor_* and all monitor services
gain a new parameter (mon) that will once refer to the monitor instance
the output is supposed to appear on. However, the argument remains
unused for now. All monitor command callbacks are also extended by a mon
parameter so that command handlers are able to pass an appropriate
reference to monitor output services.

For the case that monitor outputs so far happen without clearly
identifiable context, the global variable cur_mon is introduced that
shall once provide a pointer either to the current active monitor (while
processing commands) or to the default one. On the mid or long term,
those use case will be obsoleted so that this variable can be removed
again.

Due to the broad usage of the monitor interface, this patch mostly deals
with converting users of the monitor API. A few of them are already
extended to pass 'mon' from the command handler further down to internal
functions that invoke monitor_printf.

At this chance, monitor-related prototypes are moved from console.h to
a new monitor.h. The same is done for the readline API.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6711 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:01:23 +00:00
aliguori
bb5fc20f7c monitor: Rework modal password input (Jan Kiszka)
Currently, waiting for the user to type in some password blocks the
whole VM because monitor_readline starts its own I/O loop. And this loop
also screws up reading passwords from virtual console.

Patch below fixes the shortcomings by using normal I/O processing also
for waiting on a password. To keep to modal property for the monitor
terminal, the command handler is temporarily replaced by a password
handler and a callback infrastructure is established to process the
result before switching back to command mode.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6710 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:01:15 +00:00
aliguori
c0f4ce7751 monitor: Rework early disk password inquiry (Jan Kiszka)
Reading the passwords for encrypted hard disks during early startup is
broken (I guess for quiet a while now):
 - No monitor terminal is ready for input at this point
 - Forcing all mux'ed terminals into monitor mode can confuse other
   users of that channels

To overcome these issues and to lay the ground for a clean decoupling of
monitor terminals, this patch changes the initial password inquiry as
follows:
 - Prevent autostart if there is some encrypted disk
 - Once the user tries to resume the VM, prompt for all missing
   passwords
 - Only resume if all passwords were accepted

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6707 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:01:01 +00:00
aliguori
430eb509d2 monitor: Report encrypted disks in snapshot mode (Jan Kiszka)
If the backing file is encrypted, 'info block' currently does not report
the disk as encrypted. Fix this by using the standard API to check disk
encryption mode. Moreover, switch to a canonical output format.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6706 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:00:57 +00:00
aliguori
045df33021 block: Introduce bdrv_get_encrypted_filename (Jan Kiszka)
Introduce bdrv_get_encrypted_filename service to allow more informative
password prompting.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6704 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:00:48 +00:00
aliguori
51de97605b block: Improve bdrv_iterate (Jan Kiszka)
Make bdrv_iterate more useful by passing the BlockDriverState to the
iterator instead of the device name.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6703 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:00:43 +00:00
aliguori
51d7c00c14 block: Polish error handling of brdv_open2 (Jan Kiszka)
Make sure that we always delete temporary disk images on error, remove
obsolete malloc error checks and return proper error codes.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6702 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05 23:00:29 +00:00
aliguori
71d0770c4c Fix CVE-2008-0928 - insufficient block device address range checking (Anthony Liguori)
Introduce a growable flag that's set by bdrv_file_open().  Block devices should
never be growable, only files that are being used by block devices.

I went through Fabrice's early comments about the patch that was first applied.
While I disagree with that patch, I also disagree with Fabrice's suggestion.

There's no good reason to do the checks in the block drivers themselves.  It
just increases the possibility that this bug could show up again.  Since we're
calling bdrv_getlength() to determine the length, we're giving the block drivers
a chance to chime in and let us know what range is valid.

Basically, this patch makes the BlockDriver API guarantee that all requests are
within 0..bdrv_getlength() which to me seems like a Good Thing.

What do others think?

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6677 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-03 17:37:16 +00:00
aurel32
d905dba48f fix SIGSEGV when USE_KQEMU is defined
Signed-off-by: Alex Ivanov <void@aleksoft.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6674 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-03 06:28:26 +00:00
aliguori
3ec88e8036 block: remove error handling from qemu_malloc() callers (Avi Kivity)
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6527 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05 22:05:53 +00:00
aliguori
249aa745fb qemu iovec: keep track of total size, allow partial copies (Gerd Hoffman)
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6448 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-26 17:17:52 +00:00
aliguori
1987530fe0 qcow2 format: keep 'num_free_bytes', and show it upon 'info blockstats' (Uri Lublin)
'num_free_bytes' is the number of non-allocated bytes below highest-allocation.
It's useful, together with the highest-allocation, to figure out how
fragmented the image is, and how likely it will run out-of-space soon.

For example when the highest allocation is high (almost end-of-disk), but 
many bytes (clusters) are free, and can be re-allocated when neeeded, than
we know it's probably not going to reach end-of-disk-space soon.

Added bookkeeping to block-qcow2.c
Export it using BlockDeviceInfo
Show it upon 'info blockstats' if BlockDeviceInfo exists

Signed-off-by: Uri Lublin <uril@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6407 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22 18:57:34 +00:00
aliguori
a7cbfae0cf info blockstats: show highest_allocated if exists (Uri Lublin)
Signed-off-by: Uri Lublin <uril@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6406 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22 18:57:30 +00:00
aliguori
3b69e4b9ad Vectored block device API (Avi Kivity)
Most devices that are capable of DMA are also capable of scatter-gather.
With the memory mapping API, this means that the device code needs to be
able to access discontiguous host memory regions.

For block devices, this translates to vectored I/O.  This patch implements
an aynchronous vectored interface for the qemu block devices.  At the moment
all I/O is bounced and submitted through the non-vectored API; in the future
we will convert block devices to natively support vectored I/O wherever
possible.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6397 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22 16:59:24 +00:00
aliguori
42fb2807d9 bdrv_write should not stop on partial write (Gleb Natapov)
Should return real error instead.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6323 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15 20:43:39 +00:00
blueswir1
a38131b669 Attached patch contains warning fixes.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5888 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-05 17:56:40 +00:00
blueswir1
3990d09adf sys-queue.h defines _SYS_QUEUE_H_ which is also defined by
the <sys/queue.h> system header. <sys/disk.h> uses SLIST_ENTRY
on NetBSD, which doesn't exist in sys-queue.h. Therefore,
include <sys/queue.h> before including sys-queue.h.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5885 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-05 17:53:21 +00:00
aliguori
f3d54fc494 Abstract out geometry detection code from IDE for reuse
Virtio will want to use the geometry detection code.  It doesn't belong 
in ide.c anyway.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5797 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-25 21:50:24 +00:00
aliguori
4fc9af53d8 Use an option rom instead of boot sector for -kernel
Generate an option rom instead of using a hijacked boot sector for kernel
booting.  This just requires adding a small option ROM header and a few more
instructions to the boot sector to take over the int19 vector and run our
boot code.

A disk is no longer needed when using -kernel on x86.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5650 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-08 16:27:07 +00:00
aliguori
9f7965c7e9 Expand cache= option and use write-through caching by default
This patch changes the cache= option to accept none, writeback, or writethough
to control the host page cache behavior.  By default, writethrough caching is
now used which internally is implemented by using O_DSYNC to open the disk
images.  When using -snapshot, writeback is used by default since data integrity
it not at all an issue.

cache=none has the same behavior as cache=off previously.  The later syntax is
still supported by now deprecated.  I also cleaned up the O_DIRECT
implementation to avoid many of the #ifdefs.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5485 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-14 14:42:54 +00:00
aurel32
a0a83536e0 open() can also return EPERM for O_RDWR on a readonly device
Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5482 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-13 21:08:34 +00:00
aliguori
c6ca28d636 Add bdrv_flush_all()
This patch adds a bdrv_flush_all() function.  It's necessary to ensure that all
IO operations have been flushed to disk before completely a live migration.

N.B. we don't actually use this now.  We really should flush the block drivers
using an live savevm callback to avoid unnecessary guest down time.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5432 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-06 13:55:43 +00:00
aliguori
a76bab4952 Refactor AIO to allow multiple AIO implementations
This patch refactors the AIO layer to allow multiple AIO implementations.  It's
only possible because of the recent signalfd() patch.  

Right now, the AIO infrastructure is pretty specific to the block raw backend.
For other block devices to implement AIO, the qemu_aio_wait function must
support registration.  This patch introduces a new function,
qemu_aio_set_fd_handler, which can be used to register a file descriptor to be
called back.  qemu_aio_wait() now polls a set of file descriptors registered
with this function until one becomes readable or writable.

This patch should allow the implementation of alternative AIO backends (via a
thread pool or linux-aio) and AIO backends in non-traditional block devices
(like NBD).

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5297 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-22 19:17:18 +00:00
blueswir1
7ee930d031 Fix warnings that would be caused by ld flag --warn-common
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5240 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-17 19:04:14 +00:00
aliguori
03ff3ca30f Use common objects for qemu-img and qemu-nbd
Right now, we sprinkle #if defined(QEMU_IMG) && defined(QEMU_NBD) all over the
code.  It's ugly and causes us to have to build multiple object files for
linking against qemu and the tools.

This patch introduces a new file, qemu-tool.c which contains enough for
qemu-img, qemu-nbd, and QEMU to all share the same objects.

This also required getting qemu-nbd to be a bit more Windows friendly.  I also
changed the Windows block-raw to use normal IO instead of overlapping IO since
we don't actually do AIO yet on Windows.  I changed the various #if 0's to
 #if WIN32_AIO to make it easier for someone to eventually fix AIO on Windows.

After this patch, there are no longer any #ifdef's related to qemu-img and
qemu-nbd.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5226 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-15 15:51:35 +00:00
blueswir1
7ccfb2eb5f Fix warnings that would be caused by gcc flag -Wwrite-strings
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5206 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-14 06:45:34 +00:00
aliguori
7c96d46ec2 Let snapshot work with protocols
realpath will horribly mangle a protocol so avoid calling it if the backing
file is a protocol.



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5200 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-12 17:54:13 +00:00
aliguori
a3392f9b10 Only build compatfd when using AIO and make sure to always init AIO
OpenBSD doesn't use AIO so don't try to build compatfd when not using AIO.

Also make sure to call qemu_aio_init() from bdrv_init.  Everything that uses
bdrv calls bdrv_init so it makes sense to init aio from there instead of
in every single tool.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5197 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-11 18:00:19 +00:00
aliguori
baf35cb902 Use signalfd() to work around signal/select race
This patch introduces signalfd() to work around the signal/select race in
checking for AIO completions.  For platforms that don't support signalfd(), we
emulate it with threads.

There was a long discussion about this approach.  I don't believe there are any
fundamental problems with this approach and I believe eliminating the use of
signals is a good thing.

I've tested Windows and Linux using Windows and Linux guests.  I've also checked
for disk IO performance regressions.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5187 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-10 15:45:19 +00:00
blueswir1
79383c9c08 Fix some warnings that would be generated by gcc -Wredundant-decls
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5115 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-30 09:51:20 +00:00
aliguori
cd01b4a312 Fix windows build
Right now, the Windows build is broken because of NBD.  Using a mingw32 cross
compiler is also badly broken.

This patch fixes the Windows build by stubbing out NBD support until someone
fixes it for Windows.  It also santizing the mingw32 cross compiler support
by replacing the --enable-mingw32 option with a compiler check to determine
if we're on windows or not.

Also remove the weird SDL pseudo-detection for mingw32 using a cross compiler.
The hardcoded sdl-config name is seemly arbitrary.  If you cross compiler SDL
correctly and modify your PATH variable appropriately, it will Just Work when
cross compiling.

The audio driver detection is also broken for cross compiling so you have to
specify the audio drivers explicitly for now.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>




git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5046 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-21 19:25:45 +00:00
ths
75818250ba Allow QEMU to connect directly to an NBD server, by Laurent Vivier.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4838 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-03 13:41:03 +00:00
ths
f58c7b3545 New qemu-img convert -B option, by Marc Bevand.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4672 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-05 21:53:49 +00:00
aurel32
34c6f05032 unlink the bs from bdrv-list upon bdrv_delete(bs)
(Uri Lublin)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4179 c046a42c-6fe2-441c-8c8c-71466251a162
2008-04-08 19:51:21 +00:00
aurel32
b5eff35546 Revert fix for CVE-2008-0928. Will be fixed in a different way later.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4041 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-11 23:30:22 +00:00
aurel32
902b27d0b8 Fix CVE-2008-0928 - insufficient block device address range checking
Qemu 0.9.1 and earlier does not perform range checks for block device
read or write requests, which allows guest host users with root
privileges to access arbitrary memory and escape the virtual machine.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4037 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-11 17:17:59 +00:00
aurel32
0badc1ee0e Honor TMPDIR environment variable
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4033 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-10 00:05:34 +00:00
ths
985a03b0ce Real SCSI device passthrough (v4), by Laurent Vivier.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3851 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-24 16:10:43 +00:00
balrog
33f002714b Add "cache" parameter to "-drive" (Laurent Vivier).
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3848 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-24 14:33:24 +00:00
ths
96b8f136f5 Fix bdrv_get_geometry to return uint64_t, by Andre Przywara.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3825 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-17 01:35:20 +00:00
ths
a36e69ddfe Collecting block device statistics, by Richard W.M. Jones.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3760 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-02 05:18:19 +00:00
pbrook
9596ebb701 Add statics and missing #includes for prototypes.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3683 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-18 01:44:38 +00:00
pbrook
87ecb68bdf Break up vl.h.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-17 17:14:51 +00:00
pbrook
faf07963cb Split block API from vl.h.
Remove QEMU_TOOL. Replace with QEMU_IMG and NEED_CPU_H.
Avoid linking qemu-img against whole system emulatior.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3578 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-11 02:51:17 +00:00
ths
3b46e62427 find -type f | xargs sed -i 's/[\t ]*$//g' # Yes, again. Note the star in the regex.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3177 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-17 08:09:54 +00:00
ths
5fafdf24ef find -type f | xargs sed -i 's/[\t ]$//g' # on most files
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-16 21:08:06 +00:00
ths
6ada7453aa Parallels disk image support, by Alex Beregszaszi.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3102 c046a42c-6fe2-441c-8c8c-71466251a162
2007-07-31 23:28:53 +00:00
ths
eb5c851f2d Use PATH_MAX for name lengths, by Sergey Vlasov.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2419 c046a42c-6fe2-441c-8c8c-71466251a162
2007-02-11 15:06:09 +00:00
ths
71c2fd5cdf Define ENOMEDIUM to match ENODEV if it isn't available.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2357 c046a42c-6fe2-441c-8c8c-71466251a162
2007-01-26 15:37:46 +00:00
ths
7f1c9da998 Darwin build fix, by Pierre d'Herbemont.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2334 c046a42c-6fe2-441c-8c8c-71466251a162
2007-01-18 22:43:16 +00:00
bellard
21664424ed path_is_absolute() fix for win32
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2307 c046a42c-6fe2-441c-8c8c-71466251a162
2007-01-07 18:22:37 +00:00
bellard
3b9f94e1a8 win32 block device fixes (initial patch by kazu)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2305 c046a42c-6fe2-441c-8c8c-71466251a162
2007-01-07 17:27:07 +00:00
ths
fef3074347 Escape filname printout properly, by Anthony Liguori and Julian Seward.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2263 c046a42c-6fe2-441c-8c8c-71466251a162
2006-12-22 14:11:32 +00:00
bellard
a817d93656 fixed handling of relative filenames with -snapshot
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2136 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-24 19:53:37 +00:00
bellard
f45512feac win32 compilation fixes
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2134 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-23 21:40:13 +00:00
bellard
6b21b973ab fixed error handling
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2133 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-23 21:14:37 +00:00
bellard
19cb37389f better support of host drives
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2124 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-19 11:45:59 +00:00
bellard
90765429aa fixed aio emulation
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2099 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-07 19:10:16 +00:00
pbrook
ce1a14dc0d Dynamically allocate AIO Completion Blocks.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2098 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-07 02:38:06 +00:00
bellard
d15a771da1 qcow2 is now used for '-snapshot' - keep BlockDriverState.total_sectors
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2094 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-06 13:35:09 +00:00
bellard
faea38e786 multiple snapshot support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2086 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-05 21:31:00 +00:00
bellard
83f6409109 async file I/O API
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2075 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-01 16:21:11 +00:00
bellard
beac80cd43 Windows sparse file support (Frediano Ziglio)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2027 c046a42c-6fe2-441c-8c8c-71466251a162
2006-06-26 20:08:57 +00:00
pbrook
7a6cba611d Disk cache flush support.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1949 c046a42c-6fe2-441c-8c8c-71466251a162
2006-06-04 11:39:07 +00:00
bellard
ec530c81ef Solaris port (Ben Taylor)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1855 c046a42c-6fe2-441c-8c8c-71466251a162
2006-04-25 22:36:06 +00:00
bellard
95389c8681 qcow_make_empty() support (Johannes Schindelin)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1716 c046a42c-6fe2-441c-8c8c-71466251a162
2005-12-18 18:28:15 +00:00
bellard
79639d423f update boot sector when using -kernel (Magnus Damm)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1664 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-26 10:58:41 +00:00
bellard
3b0d4f61c9 OS X: support for the built in CD-ROM drive (Mike Kronenberg)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1583 c046a42c-6fe2-441c-8c8c-71466251a162
2005-10-30 18:30:10 +00:00
bellard
712e78744e probing fixes
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1425 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-28 21:09:32 +00:00
bellard
6a0f9e82c5 Virtual PC read-only disk image support (Alex Beregszaszi)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1417 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-27 20:17:58 +00:00
bellard
e5484d3391 BSD fix
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1413 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-27 19:55:01 +00:00
bellard
7674e7bf08 BSD cdrom device access fix
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1412 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-26 21:59:26 +00:00
bellard
c747cd1fa2 raw CDROM access for windows (Filip Navara)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1411 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-26 21:47:02 +00:00
bellard
a8753c3466 Bochs disk image support (Alex Beregszaszi)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1409 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-26 21:34:00 +00:00
bellard
585d0ed98b .dmg disk image format support (Johannes Schindelin)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1171 c046a42c-6fe2-441c-8c8c-71466251a162
2004-12-12 11:24:44 +00:00
bellard
46d4767d93 better BIOS ATA translation support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1153 c046a42c-6fe2-441c-8c8c-71466251a162
2004-11-16 01:45:27 +00:00
bellard
3c56521b70 cloop driver (Johannes Schindelin)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1076 c046a42c-6fe2-441c-8c8c-71466251a162
2004-09-29 21:29:14 +00:00
bellard
e2731add29 fixed block close() method prototype
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1068 c046a42c-6fe2-441c-8c8c-71466251a162
2004-09-18 19:32:11 +00:00
bellard
d5249393ef 64 bit file I/O by default
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1040 c046a42c-6fe2-441c-8c8c-71466251a162
2004-08-03 21:14:23 +00:00
bellard
ea2384d36e new disk image layer
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1037 c046a42c-6fe2-441c-8c8c-71466251a162
2004-08-01 21:59:26 +00:00
bellard
81d0912d2d completion support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1020 c046a42c-6fe2-441c-8c8c-71466251a162
2004-07-14 17:21:37 +00:00
bellard
eba2af633f buffer overflow fix
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@932 c046a42c-6fe2-441c-8c8c-71466251a162
2004-06-19 17:23:39 +00:00
bellard
2b64948eb5 64 bit fix
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@790 c046a42c-6fe2-441c-8c8c-71466251a162
2004-05-08 15:27:20 +00:00
bellard
67b915a5dd win32 port (initial patch by kazu)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@692 c046a42c-6fe2-441c-8c8c-71466251a162
2004-03-31 23:37:16 +00:00
bellard
b338082b3f remoable device support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@658 c046a42c-6fe2-441c-8c8c-71466251a162
2004-03-14 21:38:54 +00:00
bellard
00af2b2680 added cow.h
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@653 c046a42c-6fe2-441c-8c8c-71466251a162
2004-02-26 00:20:56 +00:00
bellard
cf98951b82 force boot sector feature
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@616 c046a42c-6fe2-441c-8c8c-71466251a162
2004-02-16 21:56:36 +00:00
bellard
33e3963e1b added user mode Linux Copy On Write disk image support - added -snapshot support (initial patch by Rusty Russell)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@309 c046a42c-6fe2-441c-8c8c-71466251a162
2003-07-06 17:15:21 +00:00
bellard
0849bf0821 allow read only images
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@299 c046a42c-6fe2-441c-8c8c-71466251a162
2003-06-30 23:17:31 +00:00
bellard
fc01f7e7f9 IDE emulation
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@291 c046a42c-6fe2-441c-8c8c-71466251a162
2003-06-30 10:03:06 +00:00