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authorKlim Kireev <klim.kireev@virtuozzo.com>2018-01-12 12:01:20 +0300
committerStefan Hajnoczi <stefanha@redhat.com>2018-01-22 14:02:33 +0000
commit90fe66f046d863363cfffcda05235ed610f6b5ef (patch)
treee8be811cdbbe5262b6d2b39677358bccb89a30ae /block/parallels.h
parented279a06c53784c8c6c9b41aa0388a4ce8a70410 (diff)
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block/parallels: move some structures into header
To implement xml format, some defines and structures from parallels.c are required. Signed-off-by: Klim Kireev <klim.kireev@virtuozzo.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Edgar Kaziakhmedov <edgar.kaziakhmedov@virtuozzo.com> Message-id: 20180112090122.1702-4-klim.kireev@virtuozzo.com CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/parallels.h')
-rw-r--r--block/parallels.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/block/parallels.h b/block/parallels.h
new file mode 100644
index 0000000..71183c0
--- /dev/null
+++ b/block/parallels.h
@@ -0,0 +1,86 @@
+/*
+* Block driver for Parallels disk image format
+*
+* Copyright (c) 2015-2017 Virtuozzo, Inc.
+* Authors:
+* 2016-2017 Klim S. Kireev <klim.kireev@virtuozzo.com>
+* 2015 Denis V. Lunev <den@openvz.org>
+*
+* This code was originally based on comparing different disk images created
+* by Parallels. Currently it is based on opened OpenVZ sources
+* available at
+* https://github.com/OpenVZ/ploop
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*/
+#ifndef BLOCK_PARALLELS_H
+#define BLOCK_PARALLELS_H
+#include "qemu/coroutine.h"
+#include "qemu/typedefs.h"
+
+#define DEFAULT_CLUSTER_SIZE 1048576 /* 1 MiB */
+
+/* always little-endian */
+typedef struct ParallelsHeader {
+ char magic[16]; /* "WithoutFreeSpace" */
+ uint32_t version;
+ uint32_t heads;
+ uint32_t cylinders;
+ uint32_t tracks;
+ uint32_t bat_entries;
+ uint64_t nb_sectors;
+ uint32_t inuse;
+ uint32_t data_off;
+ char padding[12];
+} QEMU_PACKED ParallelsHeader;
+
+typedef enum ParallelsPreallocMode {
+ PRL_PREALLOC_MODE_FALLOCATE = 0,
+ PRL_PREALLOC_MODE_TRUNCATE = 1,
+ PRL_PREALLOC_MODE__MAX = 2,
+} ParallelsPreallocMode;
+
+typedef struct BDRVParallelsState {
+ /** Locking is conservative, the lock protects
+ * - image file extending (truncate, fallocate)
+ * - any access to block allocation table
+ */
+ CoMutex lock;
+
+ ParallelsHeader *header;
+ uint32_t header_size;
+ bool header_unclean;
+
+ unsigned long *bat_dirty_bmap;
+ unsigned int bat_dirty_block;
+
+ uint32_t *bat_bitmap;
+ unsigned int bat_size;
+
+ int64_t data_end;
+ uint64_t prealloc_size;
+ ParallelsPreallocMode prealloc_mode;
+
+ unsigned int tracks;
+
+ unsigned int off_multiplier;
+ Error *migration_blocker;
+} BDRVParallelsState;
+
+#endif