Block layer fixes for 2.9.0-rc0

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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer fixes for 2.9.0-rc0

# gpg: Signature made Tue 07 Mar 2017 14:59:18 GMT
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (27 commits)
  commit: Don't use error_abort in commit_start
  block: Don't use error_abort in blk_new_open
  sheepdog: Support blockdev-add
  qapi-schema: Rename SocketAddressFlat's variant tcp to inet
  qapi-schema: Rename GlusterServer to SocketAddressFlat
  gluster: Plug memory leaks in qemu_gluster_parse_json()
  gluster: Don't duplicate qapi-util.c's qapi_enum_parse()
  gluster: Drop assumptions on SocketTransport names
  sheepdog: Implement bdrv_parse_filename()
  sheepdog: Use SocketAddress and socket_connect()
  sheepdog: Report errors in pseudo-filename more usefully
  sheepdog: Don't truncate long VDI name in _open(), _create()
  sheepdog: Fix snapshot ID parsing in _open(), _create, _goto()
  sheepdog: Mark sd_snapshot_delete() lossage FIXME
  sheepdog: Fix error handling sd_create()
  sheepdog: Fix error handling in sd_snapshot_delete()
  sheepdog: Defuse time bomb in sd_open() error handling
  block: Fix error handling in bdrv_replace_in_backing_chain()
  block: Handle permission errors in change_parent_backing_link()
  block: Ignore multiple children in bdrv_check_update_perm()
  ...

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

qapi/block-core.json

@@ -2124,6 +2124,7 @@
 # @ssh: Since 2.8
 # @iscsi: Since 2.9
 # @rbd: Since 2.9
+# @sheepdog: Since 2.9
 #
 # Since: 2.0
 ##
@@ -2132,8 +2133,8 @@
             'dmg', 'file', 'ftp', 'ftps', 'gluster', 'host_cdrom',
             'host_device', 'http', 'https', 'iscsi', 'luks', 'nbd', 'nfs',
             'null-aio', 'null-co', 'parallels', 'qcow', 'qcow2', 'qed',
-            'quorum', 'raw', 'rbd', 'replication', 'ssh', 'vdi', 'vhdx', 'vmdk',
-            'vpc', 'vvfat' ] }
+            'quorum', 'raw', 'rbd', 'replication', 'sheepdog', 'ssh',
+            'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
 
 ##
 # @BlockdevOptionsFile:
@@ -2545,50 +2546,6 @@
             '*rewrite-corrupted': 'bool',
             '*read-pattern': 'QuorumReadPattern' } }
 
-##
-# @GlusterTransport:
-#
-# An enumeration of Gluster transport types
-#
-# @tcp:   TCP   - Transmission Control Protocol
-#
-# @unix:  UNIX  - Unix domain socket
-#
-# Since: 2.7
-##
-{ 'enum': 'GlusterTransport',
-  'data': [ 'unix', 'tcp' ] }
-
-
-##
-# @GlusterServer:
-#
-# Captures the address of a socket
-#
-# Details for connecting to a gluster server
-#
-# @type:       Transport type used for gluster connection
-#
-# This is similar to SocketAddress, only distinction:
-#
-# 1. GlusterServer is a flat union, SocketAddress is a simple union.
-#    A flat union is nicer than simple because it avoids nesting
-#    (i.e. more {}) on the wire.
-#
-# 2. GlusterServer lacks case 'fd', since gluster doesn't let you
-#    pass in a file descriptor.
-#
-# GlusterServer is actually not Gluster-specific, its a
-# compatibility evolved into an alternate for SocketAddress.
-#
-# Since: 2.7
-##
-{ 'union': 'GlusterServer',
-  'base': { 'type': 'GlusterTransport' },
-  'discriminator': 'type',
-  'data': { 'unix': 'UnixSocketAddress',
-            'tcp': 'InetSocketAddress' } }
-
 ##
 # @BlockdevOptionsGluster:
 #
@@ -2610,7 +2567,7 @@
 { 'struct': 'BlockdevOptionsGluster',
   'data': { 'volume': 'str',
             'path': 'str',
-            'server': ['GlusterServer'],
+            'server': ['SocketAddressFlat'],
             '*debug': 'int',
             '*logfile': 'str' } }
 
@@ -2735,6 +2692,26 @@
             '*auth-supported': ['RbdAuthMethod'],
             '*password-secret': 'str' } }
 
+##
+# @BlockdevOptionsSheepdog:
+#
+# Driver specific block device options for sheepdog
+#
+# @vdi:         Virtual disk image name
+# @addr:        The Sheepdog server to connect to
+# @snap-id:     Snapshot ID
+# @tag:         Snapshot tag name
+#
+# Only one of @snap-id and @tag may be present.
+#
+# Since: 2.9
+##
+{ 'struct': 'BlockdevOptionsSheepdog',
+  'data': { 'addr': 'SocketAddressFlat',
+            'vdi': 'str',
+            '*snap-id': 'uint32',
+            '*tag': 'str' } }
+
 ##
 # @ReplicationMode:
 #
@@ -2935,7 +2912,7 @@
       'raw':        'BlockdevOptionsRaw',
       'rbd':        'BlockdevOptionsRbd',
       'replication':'BlockdevOptionsReplication',
-# TODO sheepdog: Wait for structured options
+      'sheepdog':   'BlockdevOptionsSheepdog',
       'ssh':        'BlockdevOptionsSsh',
       'vdi':        'BlockdevOptionsGenericFormat',
       'vhdx':       'BlockdevOptionsGenericFormat',