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OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/qemu?expand=0&rev=25

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OBS User unknown 2008-06-02 23:08:56 +00:00 committed by Git OBS Bridge
parent 7a82aa7c9b
commit 7867b98826
4 changed files with 88 additions and 2 deletions
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68
bug-380828_qemu-block-format-arg.diff Normal file
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@ -0,0 +1,68 @@
From: Chris Wright <chrisw@redhat.com>
Subject: [PATCH] add format= to drive options
A guest with a raw format disk can write any format header to that device.
A subsequent restart of the guest will cause qemu to interpret the format
header and could allow the guest read access to any host file. Add a
format= drive option to allow host to specify, e.g. format=raw, to give
qemu a hint to choose a specific block format driver. Originially noted
by Avi Kivity <avi@qumranet.com>.
Signed-off-by: Chris Wright <chrisw@redhat.com>
[Aurelien Jarno: port to SVN tip for QEMU)
================================================================================
--- qemu-0.9.1/qemu-doc.texi
+++ qemu-0.9.1/qemu-doc.texi
@@ -252,6 +252,10 @@
@var{snapshot} is "on" or "off" and allows to enable snapshot for given drive (see @option{-snapshot}).
@item cache=@var{cache}
@var{cache} is "on" or "off" and allows to disable host cache to access data.
+@item format=@var{format}
+Specify which disk @var{format} will be used rather than detecting
+the format. Can be used to specifiy format=raw to avoid interpreting
+an untrusted format header.
@end table
Instead of @option{-cdrom} you can use:
--- qemu-0.9.1/vl.c
+++ qemu-0.9.1/vl.c
@@ -4877,13 +4877,14 @@
int bus_id, unit_id;
int cyls, heads, secs, translation;
BlockDriverState *bdrv;
+ BlockDriver *drv = NULL;
int max_devs;
int index;
int cache;
int bdrv_flags;
char *params[] = { "bus", "unit", "if", "index", "cyls", "heads",
"secs", "trans", "media", "snapshot", "file",
- "cache", NULL };
+ "cache", "format", NULL };
if (check_params(buf, sizeof(buf), params, str) < 0) {
fprintf(stderr, "qemu: unknowm parameter '%s' in '%s'\n",
@@ -5051,6 +5052,14 @@
}
}
+ if (get_param_value(buf, sizeof(buf), "format", str)) {
+ drv = bdrv_find_format(buf);
+ if (!drv) {
+ fprintf(stderr, "qemu: '%s' invalid format\n", buf);
+ return -1;
+ }
+ }
+
get_param_value(file, sizeof(file), "file", str);
/* compute bus and unit according index */
@@ -5150,7 +5159,7 @@
bdrv_flags |= BDRV_O_SNAPSHOT;
if (!cache)
bdrv_flags |= BDRV_O_DIRECT;
- if (bdrv_open(bdrv, file, bdrv_flags) < 0 || qemu_key_check(bdrv, file)) {
+ if (bdrv_open2(bdrv, file, bdrv_flags, drv) < 0 || qemu_key_check(bdrv, file)) {
fprintf(stderr, "qemu: could not open disk image %s\n",
file);
return -1;

2
qemu-img-vmdk-scsi.patch
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@ -18,7 +18,7 @@ Index: qemu-0.9.1/block-vmdk.c
- real_filename, (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4), total_size / (63 * 16));
+ real_filename, (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4),
+ total_size / (63 * 16),
+ flags & BLOCK_FLAG_SCSI ? "buslogic" : "ide");
+ flags & BLOCK_FLAG_SCSI ? "lsilogic" : "ide");
/* write the descriptor */
lseek(fd, le64_to_cpu(header.desc_offset) << 9, SEEK_SET);

11
qemu.changes
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@ -1,3 +1,14 @@
-------------------------------------------------------------------
Thu May 15 17:33:53 CEST 2008 - cthiel@suse.de
- use lsilogic instead of buslogic for SCSI VMDK images
-------------------------------------------------------------------
Thu May 8 13:56:20 CEST 2008 - uli@suse.de
- add format option to disable autodetection of disk image format
(bnc#380828)
-------------------------------------------------------------------
Fri Apr 25 13:33:40 CEST 2008 - uli@suse.de

9
qemu.spec
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@ -18,7 +18,7 @@ License: BSD 3-Clause; GPL v2 or later; LGPL v2.1 or later; X11/MIT
Group: System/Emulators/PC
Summary: Universal CPU emulator
Version: 0.9.1
Release: 35
Release: 46
Source: %name-%version.tar.bz2
#Patch400: qemu-0.7.0-gcc4-dot-syms.patch
#Patch401: qemu-0.8.0-gcc4-hacks.patch
@ -60,6 +60,7 @@ Patch82: qemu-cvs-svm2.patch
Patch83: qemu-cvs-ppcspe.patch
Patch84: qemu-s390dis-license.patch
Patch85: qemu-img-vmdk-scsi.patch
Patch86: bug-380828_qemu-block-format-arg.diff
Source200: kvm_bios.bin
Source201: zx-rom.bin
Source202: COPYING.zx-rom
@ -164,6 +165,7 @@ Authors:
%patch83
%patch84
%patch85 -p1
%patch86 -p1
%if 1
cd gcc-3.3.5
%patch600
@ -316,6 +318,11 @@ rm -rf %{gcc33tmp}
%endif
%changelog
* Thu May 15 2008 cthiel@suse.de
- use lsilogic instead of buslogic for SCSI VMDK images
* Thu May 08 2008 uli@suse.de
- add format option to disable autodetection of disk image format
(bnc#380828)
* Fri Apr 25 2008 uli@suse.de
- revert secfix (causes data corruption, no known good patch
available yet)