revert to non-vmstate supporting usb-hub.c

[qemu] / block-qcow.c

diff --git a/block-qcow.c b/block-qcow.c
index 208e35c..1fabc49 100644 (file)
--- a/block-qcow.c
+++ b/block-qcow.c
@@ -21,7 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-#include "vl.h"
+#include "qemu-common.h"
 #include "block_int.h"
 #include <zlib.h>
 #include "aes.h"
@@ -80,7 +80,7 @@ static int decompress_cluster(BDRVQcowState *s, uint64_t cluster_offset);
 static int qcow_probe(const uint8_t *buf, int buf_size, const char *filename)
 {
     const QCowHeader *cow_header = (const void *)buf;
-   
+
     if (buf_size >= sizeof(QCowHeader) &&
         be32_to_cpu(cow_header->magic) == QCOW_MAGIC &&
         be32_to_cpu(cow_header->version) == QCOW_VERSION)
@@ -108,7 +108,7 @@ static int qcow_open(BlockDriverState *bs, const char *filename, int flags)
     be64_to_cpus(&header.size);
     be32_to_cpus(&header.crypt_method);
     be64_to_cpus(&header.l1_table_offset);
-   
+
     if (header.magic != QCOW_MAGIC || header.version != QCOW_VERSION)
         goto fail;
     if (header.size <= 1 || header.cluster_bits < 9)
@@ -151,7 +151,7 @@ static int qcow_open(BlockDriverState *bs, const char *filename, int flags)
     if (!s->cluster_data)
         goto fail;
     s->cluster_cache_offset = -1;
-   
+
     /* read the backing file name */
     if (header.backing_file_offset != 0) {
         len = header.backing_file_size;
@@ -177,7 +177,7 @@ static int qcow_set_key(BlockDriverState *bs, const char *key)
     BDRVQcowState *s = bs->opaque;
     uint8_t keybuf[16];
     int len, i;
-   
+
     memset(keybuf, 0, 16);
     len = strlen(key);
     if (len > 16)
@@ -262,7 +262,7 @@ static uint64_t get_cluster_offset(BlockDriverState *bs,
     uint64_t l2_offset, *l2_table, cluster_offset, tmp;
     uint32_t min_count;
     int new_l2_table;
-   
+
     l1_index = offset >> (s->l2_bits + s->cluster_bits);
     l2_offset = s->l1_table[l1_index];
     new_l2_table = 0;
@@ -363,7 +363,7 @@ static uint64_t get_cluster_offset(BlockDriverState *bs,
                         }
                     }
                 }
-            } else {
+            } else if (allocate == 2) {
                 cluster_offset |= QCOW_OFLAG_COMPRESSED |
                     (uint64_t)compressed_size << (63 - s->cluster_bits);
             }
@@ -420,7 +420,7 @@ static int decompress_buffer(uint8_t *out_buf, int out_buf_size,
     inflateEnd(strm);
     return 0;
 }
-                             
+
 static int decompress_cluster(BDRVQcowState *s, uint64_t cluster_offset)
 {
     int ret, csize;
@@ -450,7 +450,7 @@ static int qcow_read(BlockDriverState *bs, int64_t sector_num,
     BDRVQcowState *s = bs->opaque;
     int ret, index_in_cluster, n;
     uint64_t cluster_offset;
-   
+
     while (nb_sectors > 0) {
         cluster_offset = get_cluster_offset(bs, sector_num << 9, 0, 0, 0, 0);
         index_in_cluster = sector_num & (s->cluster_sectors - 1);
@@ -493,7 +493,7 @@ static int qcow_write(BlockDriverState *bs, int64_t sector_num,
     BDRVQcowState *s = bs->opaque;
     int ret, index_in_cluster, n;
     uint64_t cluster_offset;
-   
+
     while (nb_sectors > 0) {
         index_in_cluster = sector_num & (s->cluster_sectors - 1);
         n = s->cluster_sectors - index_in_cluster;
@@ -572,7 +572,7 @@ static void qcow_aio_read_cb(void *opaque, int ret)
         qemu_aio_release(acb);
         return;
     }
-   
+
     /* prepare next AIO request */
     acb->cluster_offset = get_cluster_offset(bs, acb->sector_num << 9,
                                              0, 0, 0, 0);
@@ -627,7 +627,7 @@ static BlockDriverAIOCB *qcow_aio_read(BlockDriverState *bs,
     acb->buf = buf;
     acb->nb_sectors = nb_sectors;
     acb->n = 0;
-    acb->cluster_offset = 0;   
+    acb->cluster_offset = 0;
 
     qcow_aio_read_cb(acb, 0);
     return &acb->common;
@@ -661,7 +661,7 @@ static void qcow_aio_write_cb(void *opaque, int ret)
         qemu_aio_release(acb);
         return;
     }
-   
+
     index_in_cluster = acb->sector_num & (s->cluster_sectors - 1);
     acb->n = s->cluster_sectors - index_in_cluster;
     if (acb->n > acb->nb_sectors)
@@ -701,7 +701,7 @@ static BlockDriverAIOCB *qcow_aio_write(BlockDriverState *bs,
 {
     BDRVQcowState *s = bs->opaque;
     QCowAIOCB *acb;
-   
+
     s->cluster_cache_offset = -1; /* disable compressed cache */
 
     acb = qemu_aio_get(bs, cb, opaque);
@@ -712,7 +712,7 @@ static BlockDriverAIOCB *qcow_aio_write(BlockDriverState *bs,
     acb->buf = (uint8_t *)buf;
     acb->nb_sectors = nb_sectors;
     acb->n = 0;
-   
+
     qcow_aio_write_cb(acb, 0);
     return &acb->common;
 }
@@ -752,11 +752,15 @@ static int qcow_create(const char *filename, int64_t total_size,
     header_size = sizeof(header);
     backing_filename_len = 0;
     if (backing_file) {
-        header.backing_file_offset = cpu_to_be64(header_size);
-        backing_filename_len = strlen(backing_file);
-        header.backing_file_size = cpu_to_be32(backing_filename_len);
-        header_size += backing_filename_len;
-        header.mtime = cpu_to_be32(0);
+        if (strcmp(backing_file, "fat:")) {
+            header.backing_file_offset = cpu_to_be64(header_size);
+            backing_filename_len = strlen(backing_file);
+            header.backing_file_size = cpu_to_be32(backing_filename_len);
+            header_size += backing_filename_len;
+        } else {
+            /* special backing file for vvfat */
+            backing_file = NULL;
+        }
         header.cluster_bits = 9; /* 512 byte cluster to avoid copying
                                     unmodifyed sectors */
         header.l2_bits = 12; /* 32 KB L2 tables */
@@ -769,12 +773,12 @@ static int qcow_create(const char *filename, int64_t total_size,
     l1_size = ((total_size * 512) + (1LL << shift) - 1) >> shift;
 
     header.l1_table_offset = cpu_to_be64(header_size);
-    if (flags) {
+    if (flags & BLOCK_FLAG_ENCRYPT) {
         header.crypt_method = cpu_to_be32(QCOW_CRYPT_AES);
     } else {
         header.crypt_method = cpu_to_be32(QCOW_CRYPT_NONE);
     }
-   
+
     /* write all the data */
     write(fd, &header, sizeof(header));
     if (backing_file) {
@@ -864,7 +868,7 @@ static int qcow_write_compressed(BlockDriverState *bs, int64_t sector_num,
             return -1;
         }
     }
-   
+
     qemu_free(out_buf);
     return 0;
 }
@@ -883,23 +887,20 @@ static int qcow_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
 }
 
 BlockDriver bdrv_qcow = {
-    "qcow",
-    sizeof(BDRVQcowState),
-    qcow_probe,
-    qcow_open,
-    NULL,
-    NULL,
-    qcow_close,
-    qcow_create,
-    qcow_flush,
-    qcow_is_allocated,
-    qcow_set_key,
-    qcow_make_empty,
-
-    .bdrv_aio_read = qcow_aio_read,
-    .bdrv_aio_write = qcow_aio_write,
-    .bdrv_aio_cancel = qcow_aio_cancel,
-    .aiocb_size = sizeof(QCowAIOCB),
+    .format_name       = "qcow",
+    .instance_size     = sizeof(BDRVQcowState),
+    .bdrv_probe                = qcow_probe,
+    .bdrv_open         = qcow_open,
+    .bdrv_close                = qcow_close,
+    .bdrv_create       = qcow_create,
+    .bdrv_flush                = qcow_flush,
+    .bdrv_is_allocated = qcow_is_allocated,
+    .bdrv_set_key      = qcow_set_key,
+    .bdrv_make_empty   = qcow_make_empty,
+    .bdrv_aio_read     = qcow_aio_read,
+    .bdrv_aio_write    = qcow_aio_write,
+    .bdrv_aio_cancel   = qcow_aio_cancel,
+    .aiocb_size                = sizeof(QCowAIOCB),
     .bdrv_write_compressed = qcow_write_compressed,
-    .bdrv_get_info = qcow_get_info,
+    .bdrv_get_info     = qcow_get_info,
 };