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2008-09-24fix bug in block-qcow2.c:alloc_cluster_offset() (Shahar Frank)aliguori
During the debugging of the new revision of the zero dedup patch I stepped on the following bug in block-qcow2.c:alloc_cluster_offset(). I am not sure what the exact damage this bug can do, but it may be very nasty because you way not notice it effects until you will do some snapshot operations or similar actions that rely on the reference counting. The bug is easy to spot using the new "check" verb I added to the qemu-img in one of the previous patches. I will resend the qemu-img patch again with the new version of the zero dedup. Signed-off-by: Shahar Frank <shaharf@qumranet.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5313 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-16Move offsetof to osdep.h, remove local defintions.balrog
With this container_of can actually be used without causing build errors. Reformat container_of. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5234 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-14qcow2: Try to aggregate free clusters and freed clusters (Laurent Vivier)aliguori
In alloc_cluster_offset(), try to aggregate free clusters and freed clusters. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5008 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-14qcow2: Make sure to return an error when L2 table loading failsaliguori
This was suggested by Kevin Wolf since this is, in fact, an error condition. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5007 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-14qcow2: Aggregate same type clusters (Laurent Vivier)aliguori
Modify get_cluster_offset(), alloc_cluster_offset() to specify how many clusters we want. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5006 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-14Extract compressing part from alloc_cluster_offset() (Laurent Vivier)aliguori
Divide alloc_cluster_offset() into alloc_cluster_offset() and alloc_compressed_cluster_offset(). Common parts are moved to free_any_clusters() and get_cluster_table(); Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5005 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-14Divide get_cluster_offset() (Laurent Vivier)aliguori
Divide get_cluster_offset() into get_cluster_offset() and alloc_cluster_offset(). Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5004 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-14qcow2: Extract code from get_cluster_offset() (Laurent Vivier)aliguori
Extract code from get_cluster_offset() into new functions: - seek_l2_table() Search an l2 offset in the l2_cache table. - l2_load() Read the l2 entry from disk - l2_allocate() Allocate a new l2 entry. Some comment fixups from Kevin Wolf Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Kevin Wolf <kwolf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5003 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-11Revert fix for CVE-2008-0928. Will be fixed in a different way later.aurel32
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4041 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-11Fix CVE-2008-0928 - insufficient block device address range checkingaurel32
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
2007-11-11Split block API from vl.h.pbrook
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
2007-09-17find -type f | xargs sed -i 's/[\t ]*$//g' # Yes, again. Note the star in ↵ths
the regex. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3177 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-16vmdk compatibility level 6 images, by Soren Hansen.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3175 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-16find -type f | xargs sed -i 's/[\t ]$//g' # on most filesths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
2007-04-02Qcow2: Release refcount table clusters after growing the refcount table,ths
by Juergen Keil. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2586 c046a42c-6fe2-441c-8c8c-71466251a162
2007-04-01Qcow2 corruption fix, by Juergen Keil.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2578 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-07Dynamically allocate AIO Completion Blocks.pbrook
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2098 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-06handle read outside the backing filebellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2093 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-05fixed disk image creationbellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2089 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-05new qcow2 disk image formatbellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2083 c046a42c-6fe2-441c-8c8c-71466251a162
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