Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

v2:
 * Fix C11 typedef redefinitions in ahci and libqos malloc [Peter]
 * Fix lx -> PRIx64 format specifiers in ahci [Peter]

# gpg: Signature made Mon Feb 16 15:45:53 2015 GMT using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request: (65 commits)
  block: Keep bdrv_check*_request()'s return value
  block: Remove "growable" from BDS
  block: Clamp BlockBackend requests
  qemu-io: Use BlockBackend
  qemu-io: Remove "growable" option
  qemu-io: Use blk_new_open() in openfile()
  qemu-nbd: Use blk_new_open() in main()
  qemu-img: Use BlockBackend as far as possible
  qemu-img: Use blk_new_open() in img_rebase()
  qemu-img: Use blk_new_open() in img_open()
  block/xen: Use blk_new_open() in blk_connect()
  blockdev: Use blk_new_open() in blockdev_init()
  iotests: Add test for driver=qcow2, format=qcow2
  block: Add Error parameter to bdrv_find_protocol()
  block: Add blk_new_open()
  block: Lift some BDS functions to the BlockBackend
  iotests: Add test for qemu-img convert to NBD
  qemu-img: Fix qemu-img convert -n
  qemu-iotests: Add 093 for IO throttling
  qemu-iotests: Allow caller to disable underscore convertion for qmp
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

7 files changed, 94 insertions, 19 deletions

diff --git a/include/block/block.h b/include/block/block.h
index 321295e5f7..471d11dbbe 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -168,7 +168,8 @@ void bdrv_io_limits_disable(BlockDriverState *bs);
 void bdrv_init(void);
 void bdrv_init_with_whitelist(void);
 BlockDriver *bdrv_find_protocol(const char *filename,
-                                bool allow_protocol_prefix);
+                                bool allow_protocol_prefix,
+                                Error **errp);
 BlockDriver *bdrv_find_format(const char *format_name);
 BlockDriver *bdrv_find_whitelisted_format(const char *format_name,
                                           bool readonly);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 7ad19503df..b340e7e140 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -369,9 +369,6 @@ struct BlockDriverState {
     /* I/O Limits */
     BlockLimits bl;
 
-    /* Whether the disk can expand beyond total_sectors */
-    int growable;
-
     /* Whether produces zeros when read beyond eof */
     bool zero_beyond_eof;
 
diff --git a/include/block/nbd.h b/include/block/nbd.h
index b75959556c..ca9a5ac5b3 100644
--- a/include/block/nbd.h
+++ b/include/block/nbd.h
@@ -99,7 +99,6 @@ void nbd_export_close_all(void);
 
 NBDClient *nbd_client_new(NBDExport *exp, int csock,
                           void (*close)(NBDClient *));
-void nbd_client_close(NBDClient *client);
 void nbd_client_get(NBDClient *client);
 void nbd_client_put(NBDClient *client);
 
diff --git a/include/hw/virtio/dataplane/vring-accessors.h b/include/hw/virtio/dataplane/vring-accessors.h
new file mode 100644
index 0000000000..b508b87900
--- /dev/null
+++ b/include/hw/virtio/dataplane/vring-accessors.h
@@ -0,0 +1,75 @@
+#ifndef VRING_ACCESSORS_H
+#define VRING_ACCESSORS_H
+
+#include "hw/virtio/virtio_ring.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-access.h"
+
+static inline uint16_t vring_get_used_idx(VirtIODevice *vdev, Vring *vring)
+{
+    return virtio_tswap16(vdev, vring->vr.used->idx);
+}
+
+static inline void vring_set_used_idx(VirtIODevice *vdev, Vring *vring,
+                                      uint16_t idx)
+{
+    vring->vr.used->idx = virtio_tswap16(vdev, idx);
+}
+
+static inline uint16_t vring_get_avail_idx(VirtIODevice *vdev, Vring *vring)
+{
+    return virtio_tswap16(vdev, vring->vr.avail->idx);
+}
+
+static inline uint16_t vring_get_avail_ring(VirtIODevice *vdev, Vring *vring,
+                                            int i)
+{
+    return virtio_tswap16(vdev, vring->vr.avail->ring[i]);
+}
+
+static inline void vring_set_used_ring_id(VirtIODevice *vdev, Vring *vring,
+                                          int i, uint32_t id)
+{
+    vring->vr.used->ring[i].id = virtio_tswap32(vdev, id);
+}
+
+static inline void vring_set_used_ring_len(VirtIODevice *vdev, Vring *vring,
+                                          int i, uint32_t len)
+{
+    vring->vr.used->ring[i].len = virtio_tswap32(vdev, len);
+}
+
+static inline uint16_t vring_get_used_flags(VirtIODevice *vdev, Vring *vring)
+{
+    return virtio_tswap16(vdev, vring->vr.used->flags);
+}
+
+static inline uint16_t vring_get_avail_flags(VirtIODevice *vdev, Vring *vring)
+{
+    return virtio_tswap16(vdev, vring->vr.avail->flags);
+}
+
+static inline void vring_set_used_flags(VirtIODevice *vdev, Vring *vring,
+                                        uint16_t flags)
+{
+    vring->vr.used->flags |= virtio_tswap16(vdev, flags);
+}
+
+static inline void vring_clear_used_flags(VirtIODevice *vdev, Vring *vring,
+                                          uint16_t flags)
+{
+    vring->vr.used->flags &= virtio_tswap16(vdev, ~flags);
+}
+
+static inline unsigned int vring_get_num(Vring *vring)
+{
+    return vring->vr.num;
+}
+
+/* Are there more descriptors available? */
+static inline bool vring_more_avail(VirtIODevice *vdev, Vring *vring)
+{
+    return vring_get_avail_idx(vdev, vring) != vring->last_avail_idx;
+}
+
+#endif
diff --git a/include/hw/virtio/dataplane/vring.h b/include/hw/virtio/dataplane/vring.h
index d3e086aefc..e42c0fc9cc 100644
--- a/include/hw/virtio/dataplane/vring.h
+++ b/include/hw/virtio/dataplane/vring.h
@@ -31,17 +31,6 @@ typedef struct {
     bool broken;                    /* was there a fatal error? */
 } Vring;
 
-static inline unsigned int vring_get_num(Vring *vring)
-{
-    return vring->vr.num;
-}
-
-/* Are there more descriptors available? */
-static inline bool vring_more_avail(Vring *vring)
-{
-    return vring->vr.avail->idx != vring->last_avail_idx;
-}
-
 /* Fail future vring_pop() and vring_push() calls until reset */
 static inline void vring_set_broken(Vring *vring)
 {
@@ -54,6 +43,7 @@ void vring_disable_notification(VirtIODevice *vdev, Vring *vring);
 bool vring_enable_notification(VirtIODevice *vdev, Vring *vring);
 bool vring_should_notify(VirtIODevice *vdev, Vring *vring);
 int vring_pop(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem);
-void vring_push(Vring *vring, VirtQueueElement *elem, int len);
+void vring_push(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem,
+                int len);
 
 #endif /* VRING_H */
diff --git a/include/qemu-io.h b/include/qemu-io.h
index 5d6006f73b..4d402b9b01 100644
--- a/include/qemu-io.h
+++ b/include/qemu-io.h
@@ -22,7 +22,7 @@
 
 #define CMD_FLAG_GLOBAL ((int)0x80000000) /* don't iterate "args" */
 
-typedef int (*cfunc_t)(BlockDriverState *bs, int argc, char **argv);
+typedef int (*cfunc_t)(BlockBackend *blk, int argc, char **argv);
 typedef void (*helpfunc_t)(void);
 
 typedef struct cmdinfo {
@@ -40,7 +40,7 @@ typedef struct cmdinfo {
 
 extern bool qemuio_misalign;
 
-bool qemuio_command(BlockDriverState *bs, const char *cmd);
+bool qemuio_command(BlockBackend *blk, const char *cmd);
 
 void qemuio_add_command(const cmdinfo_t *ci);
 int qemuio_command_usage(const cmdinfo_t *ci);
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index aab12b982c..2e8ebb2535 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -62,6 +62,9 @@ typedef struct BlockDevOps {
 
 BlockBackend *blk_new(const char *name, Error **errp);
 BlockBackend *blk_new_with_bs(const char *name, Error **errp);
+BlockBackend *blk_new_open(const char *name, const char *filename,
+                           const char *reference, QDict *options, int flags,
+                           Error **errp);
 void blk_ref(BlockBackend *blk);
 void blk_unref(BlockBackend *blk);
 const char *blk_name(BlockBackend *blk);
@@ -91,6 +94,7 @@ int blk_pread(BlockBackend *blk, int64_t offset, void *buf, int count);
 int blk_pwrite(BlockBackend *blk, int64_t offset, const void *buf, int count);
 int64_t blk_getlength(BlockBackend *blk);
 void blk_get_geometry(BlockBackend *blk, uint64_t *nb_sectors_ptr);
+int64_t blk_nb_sectors(BlockBackend *blk);
 BlockAIOCB *blk_aio_readv(BlockBackend *blk, int64_t sector_num,
                           QEMUIOVector *iov, int nb_sectors,
                           BlockCompletionFunc *cb, void *opaque);
@@ -151,5 +155,14 @@ BlockAcctStats *blk_get_stats(BlockBackend *blk);
 
 void *blk_aio_get(const AIOCBInfo *aiocb_info, BlockBackend *blk,
                   BlockCompletionFunc *cb, void *opaque);
+int coroutine_fn blk_co_write_zeroes(BlockBackend *blk, int64_t sector_num,
+                                     int nb_sectors, BdrvRequestFlags flags);
+int blk_write_compressed(BlockBackend *blk, int64_t sector_num,
+                         const uint8_t *buf, int nb_sectors);
+int blk_truncate(BlockBackend *blk, int64_t offset);
+int blk_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors);
+int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf,
+                     int64_t pos, int size);
+int blk_load_vmstate(BlockBackend *blk, uint8_t *buf, int64_t pos, int size);
 
 #endif