[PATCH v2 00/23] iotests: Add and use $SOCK_DIR

[PATCH v2 00/23] iotests: Add and use $SOCK_DIR

[Max Reitz]

Hi,

Perhaps the main reason we cannot run important tests such as 041 in CI
is that when they care Unix sockets in $TEST_DIR, the path may become
too long to connect to them.

To get by this problem, this series lets the check script create a new
temporary directory (mktemp -d) and then makes the iotests use it for
all Unix sockets.


v2:
- Patch 1: Use mkdir -p
- Patches 4/23: Only add the $SOCK_DIR replacement line in patch 4 and
                only drop the $TEST_DIR line in patch 23
  (Took Eric’s R-b on both because that’s how I interpreted his
  comments)


git-backport-diff against v2:

Key:
[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively

001/23:[0010] [FC] 'iotests: Introduce $SOCK_DIR'
002/23:[----] [--] 'iotests.py: Store socket files in $SOCK_DIR'
003/23:[----] [--] 'iotests.py: Add @base_dir to FilePaths etc.'
004/23:[0002] [FC] 'iotests: Filter $SOCK_DIR'
005/23:[----] [--] 'iotests: Let common.nbd create socket in $SOCK_DIR'
006/23:[----] [--] 'iotests/083: Create socket in $SOCK_DIR'
007/23:[----] [--] 'iotests/140: Create socket in $SOCK_DIR'
008/23:[----] [--] 'iotests/143: Create socket in $SOCK_DIR'
009/23:[----] [--] 'iotests/147: Create socket in $SOCK_DIR'
010/23:[----] [--] 'iotests/181: Create socket in $SOCK_DIR'
011/23:[----] [--] 'iotests/182: Create socket in $SOCK_DIR'
012/23:[----] [--] 'iotests/183: Create socket in $SOCK_DIR'
013/23:[----] [--] 'iotests/192: Create socket in $SOCK_DIR'
014/23:[----] [--] 'iotests/194: Create sockets in $SOCK_DIR'
015/23:[----] [--] 'iotests/201: Create socket in $SOCK_DIR'
016/23:[----] [--] 'iotests/205: Create socket in $SOCK_DIR'
017/23:[----] [--] 'iotests/208: Create socket in $SOCK_DIR'
018/23:[----] [--] 'iotests/209: Create socket in $SOCK_DIR'
019/23:[----] [--] 'iotests/222: Create socket in $SOCK_DIR'
020/23:[----] [--] 'iotests/223: Create socket in $SOCK_DIR'
021/23:[----] [--] 'iotests/240: Create socket in $SOCK_DIR'
022/23:[----] [--] 'iotests/267: Create socket in $SOCK_DIR'
023/23:[0002] [FC] 'iotests: Drop TEST_DIR filter from _filter_nbd'


Max Reitz (23):
  iotests: Introduce $SOCK_DIR
  iotests.py: Store socket files in $SOCK_DIR
  iotests.py: Add @base_dir to FilePaths etc.
  iotests: Filter $SOCK_DIR
  iotests: Let common.nbd create socket in $SOCK_DIR
  iotests/083: Create socket in $SOCK_DIR
  iotests/140: Create socket in $SOCK_DIR
  iotests/143: Create socket in $SOCK_DIR
  iotests/147: Create socket in $SOCK_DIR
  iotests/181: Create socket in $SOCK_DIR
  iotests/182: Create socket in $SOCK_DIR
  iotests/183: Create socket in $SOCK_DIR
  iotests/192: Create socket in $SOCK_DIR
  iotests/194: Create sockets in $SOCK_DIR
  iotests/201: Create socket in $SOCK_DIR
  iotests/205: Create socket in $SOCK_DIR
  iotests/208: Create socket in $SOCK_DIR
  iotests/209: Create socket in $SOCK_DIR
  iotests/222: Create socket in $SOCK_DIR
  iotests/223: Create socket in $SOCK_DIR
  iotests/240: Create socket in $SOCK_DIR
  iotests/267: Create socket in $SOCK_DIR
  iotests: Drop TEST_DIR filter from _filter_nbd

 python/qemu/machine.py           | 15 +++++++++++---
 python/qemu/qtest.py             |  9 ++++++---
 tests/qemu-iotests/083           |  6 +++---
 tests/qemu-iotests/083.out       | 34 ++++++++++++++++----------------
 tests/qemu-iotests/140           |  8 ++++----
 tests/qemu-iotests/140.out       |  2 +-
 tests/qemu-iotests/143           |  6 +++---
 tests/qemu-iotests/143.out       |  2 +-
 tests/qemu-iotests/147           |  2 +-
 tests/qemu-iotests/181           |  2 +-
 tests/qemu-iotests/182           |  4 ++--
 tests/qemu-iotests/183           |  2 +-
 tests/qemu-iotests/192           |  4 ++--
 tests/qemu-iotests/192.out       |  2 +-
 tests/qemu-iotests/194           |  4 ++--
 tests/qemu-iotests/201           |  2 +-
 tests/qemu-iotests/205           |  2 +-
 tests/qemu-iotests/208           |  2 +-
 tests/qemu-iotests/209           |  3 ++-
 tests/qemu-iotests/222           |  2 +-
 tests/qemu-iotests/223           | 14 ++++++-------
 tests/qemu-iotests/240           |  4 ++--
 tests/qemu-iotests/241           |  2 --
 tests/qemu-iotests/267           |  4 ++--
 tests/qemu-iotests/267.out       |  2 +-
 tests/qemu-iotests/check         | 15 ++++++++++++--
 tests/qemu-iotests/common.filter |  7 +++++--
 tests/qemu-iotests/common.nbd    |  2 +-
 tests/qemu-iotests/iotests.py    | 16 ++++++++-------
 29 files changed, 103 insertions(+), 76 deletions(-)

-- 
2.21.0

[PATCH v2 01/23] iotests: Introduce $SOCK_DIR

[Max Reitz]

Unix sockets generally have a maximum path length.  Depending on your
$TEST_DIR, it may be exceeded and then all tests that create and use
Unix sockets there may fail.

Circumvent this by adding a new scratch directory specifically for
Unix socket files.  It defaults to a temporary directory (mktemp -d)
that is completely removed after the iotests are done.

(By default, mktemp -d creates a /tmp/tmp.XXXXXXXXXX directory, which
should be short enough for our use cases.)

Use mkdir -p to create the directory (because it seems right), and do
the same for $TEST_DIR (because there is no reason for that to be
created in any different way).

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/check | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index 588c453a94..71fe38834e 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -97,6 +97,7 @@ IMGFMT        -- $FULL_IMGFMT_DETAILS
 IMGPROTO      -- $IMGPROTO
 PLATFORM      -- $FULL_HOST_DETAILS
 TEST_DIR      -- $TEST_DIR
+SOCK_DIR      -- $SOCK_DIR
 SOCKET_SCM_HELPER -- $SOCKET_SCM_HELPER
 
 EOF
@@ -116,10 +117,14 @@ set_prog_path()
 if [ -z "$TEST_DIR" ]; then
         TEST_DIR=$PWD/scratch
 fi
+mkdir -p "$TEST_DIR" || _init_error 'Failed to create TEST_DIR'
 
-if [ ! -e "$TEST_DIR" ]; then
-        mkdir "$TEST_DIR"
+tmp_sock_dir=false
+if [ -z "$SOCK_DIR" ]; then
+    SOCK_DIR=$(mktemp -d)
+    tmp_sock_dir=true
 fi
+mkdir -p "$SOCK_DIR" || _init_error 'Failed to create SOCK_DIR'
 
 diff="diff -u"
 verbose=false
@@ -534,6 +539,7 @@ if [ -z "$SAMPLE_IMG_DIR" ]; then
 fi
 
 export TEST_DIR
+export SOCK_DIR
 export SAMPLE_IMG_DIR
 
 if [ -s $tmp.list ]
@@ -716,6 +722,11 @@ END        { if (NR > 0) {
     rm -f "${TEST_DIR}"/*.out "${TEST_DIR}"/*.err "${TEST_DIR}"/*.time
     rm -f "${TEST_DIR}"/check.pid "${TEST_DIR}"/check.sts
     rm -f $tmp.*
+
+    if $tmp_sock_dir
+    then
+        rm -rf "$SOCK_DIR"
+    fi
 }
 
 trap "_wrapup; exit \$status" 0 1 2 3 15
-- 
2.21.0

[PATCH v2 02/23] iotests.py: Store socket files in $SOCK_DIR

[Max Reitz]

iotests.py itself does not store socket files, but machine.py and
qtest.py do.  iotests.py needs to pass the respective path to them, and
they need to adhere to it.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 python/qemu/machine.py        | 15 ++++++++++++---
 python/qemu/qtest.py          |  9 ++++++---
 tests/qemu-iotests/iotests.py |  4 +++-
 3 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/python/qemu/machine.py b/python/qemu/machine.py
index 128a3d1dc2..2024e8b1b1 100644
--- a/python/qemu/machine.py
+++ b/python/qemu/machine.py
@@ -71,7 +71,7 @@ class QEMUMachine(object):
 
     def __init__(self, binary, args=None, wrapper=None, name=None,
                  test_dir="/var/tmp", monitor_address=None,
-                 socket_scm_helper=None):
+                 socket_scm_helper=None, sock_dir=None):
         '''
         Initialize a QEMUMachine
 
@@ -90,6 +90,8 @@ class QEMUMachine(object):
             wrapper = []
         if name is None:
             name = "qemu-%d" % os.getpid()
+        if sock_dir is None:
+            sock_dir = test_dir
         self._name = name
         self._monitor_address = monitor_address
         self._vm_monitor = None
@@ -106,12 +108,14 @@ class QEMUMachine(object):
         self._qemu_full_args = None
         self._test_dir = test_dir
         self._temp_dir = None
+        self._sock_dir = sock_dir
         self._launched = False
         self._machine = None
         self._console_set = False
         self._console_device_type = None
         self._console_address = None
         self._console_socket = None
+        self._remove_files = []
 
         # just in case logging wasn't configured by the main script:
         logging.basicConfig()
@@ -236,8 +240,9 @@ class QEMUMachine(object):
         if self._machine is not None:
             args.extend(['-machine', self._machine])
         if self._console_set:
-            self._console_address = os.path.join(self._temp_dir,
+            self._console_address = os.path.join(self._sock_dir,
                                                  self._name + "-console.sock")
+            self._remove_files.append(self._console_address)
             chardev = ('socket,id=console,path=%s,server,nowait' %
                        self._console_address)
             args.extend(['-chardev', chardev])
@@ -253,8 +258,9 @@ class QEMUMachine(object):
         if self._monitor_address is not None:
             self._vm_monitor = self._monitor_address
         else:
-            self._vm_monitor = os.path.join(self._temp_dir,
+            self._vm_monitor = os.path.join(self._sock_dir,
                                             self._name + "-monitor.sock")
+            self._remove_files.append(self._vm_monitor)
         self._qemu_log_path = os.path.join(self._temp_dir, self._name + ".log")
         self._qemu_log_file = open(self._qemu_log_path, 'wb')
 
@@ -279,6 +285,9 @@ class QEMUMachine(object):
             shutil.rmtree(self._temp_dir)
             self._temp_dir = None
 
+        while len(self._remove_files) > 0:
+            self._remove_if_exists(self._remove_files.pop())
+
     def launch(self):
         """
         Launch the VM and make sure we cleanup and expose the
diff --git a/python/qemu/qtest.py b/python/qemu/qtest.py
index 3f1d2cb325..d24ad04256 100644
--- a/python/qemu/qtest.py
+++ b/python/qemu/qtest.py
@@ -84,14 +84,17 @@ class QEMUQtestMachine(QEMUMachine):
     '''A QEMU VM'''
 
     def __init__(self, binary, args=None, name=None, test_dir="/var/tmp",
-                 socket_scm_helper=None):
+                 socket_scm_helper=None, sock_dir=None):
         if name is None:
             name = "qemu-%d" % os.getpid()
+        if sock_dir is None:
+            sock_dir = test_dir
         super(QEMUQtestMachine,
               self).__init__(binary, args, name=name, test_dir=test_dir,
-                             socket_scm_helper=socket_scm_helper)
+                             socket_scm_helper=socket_scm_helper,
+                             sock_dir=sock_dir)
         self._qtest = None
-        self._qtest_path = os.path.join(test_dir, name + "-qtest.sock")
+        self._qtest_path = os.path.join(sock_dir, name + "-qtest.sock")
 
     def _base_args(self):
         args = super(QEMUQtestMachine, self)._base_args()
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 43759e4e27..0616129342 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -57,6 +57,7 @@ qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ')
 imgfmt = os.environ.get('IMGFMT', 'raw')
 imgproto = os.environ.get('IMGPROTO', 'file')
 test_dir = os.environ.get('TEST_DIR')
+sock_dir = os.environ.get('SOCK_DIR')
 output_dir = os.environ.get('OUTPUT_DIR', '.')
 cachemode = os.environ.get('CACHEMODE')
 qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE')
@@ -445,7 +446,8 @@ class VM(qtest.QEMUQtestMachine):
         name = "qemu%s-%d" % (path_suffix, os.getpid())
         super(VM, self).__init__(qemu_prog, qemu_opts, name=name,
                                  test_dir=test_dir,
-                                 socket_scm_helper=socket_scm_helper)
+                                 socket_scm_helper=socket_scm_helper,
+                                 sock_dir=sock_dir)
         self._num_drives = 0
 
     def add_object(self, opts):
-- 
2.21.0

[PATCH v2 03/23] iotests.py: Add @base_dir to FilePaths etc.

[Max Reitz]

Specifying this optional parameter allows creating temporary files in
other directories than the test_dir; for example in sock_dir.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/iotests.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 0616129342..b61ff30961 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -375,10 +375,10 @@ class FilePaths(object):
             qemu_img('create', img_path, '1G')
         # migration_sock_path is automatically deleted
     """
-    def __init__(self, names):
+    def __init__(self, names, base_dir=test_dir):
         self.paths = []
         for name in names:
-            self.paths.append(os.path.join(test_dir, file_pattern(name)))
+            self.paths.append(os.path.join(base_dir, file_pattern(name)))
 
     def __enter__(self):
         return self.paths
@@ -395,8 +395,8 @@ class FilePath(FilePaths):
     """
     FilePath is a specialization of FilePaths that takes a single filename.
     """
-    def __init__(self, name):
-        super(FilePath, self).__init__([name])
+    def __init__(self, name, base_dir=test_dir):
+        super(FilePath, self).__init__([name], base_dir)
 
     def __enter__(self):
         return self.paths[0]
@@ -409,7 +409,7 @@ def file_path_remover():
             pass
 
 
-def file_path(*names):
+def file_path(*names, base_dir=test_dir):
     ''' Another way to get auto-generated filename that cleans itself up.
 
     Use is as simple as:
@@ -425,7 +425,7 @@ def file_path(*names):
     paths = []
     for name in names:
         filename = file_pattern(name)
-        path = os.path.join(test_dir, filename)
+        path = os.path.join(base_dir, filename)
         file_path_remover.paths.append(path)
         paths.append(path)
 
-- 
2.21.0

[PATCH v2 04/23] iotests: Filter $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/common.filter | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index 9f418b4881..0ee6042524 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -43,7 +43,8 @@ _filter_qom_path()
 # replace occurrences of the actual TEST_DIR value with TEST_DIR
 _filter_testdir()
 {
-    $SED -e "s#$TEST_DIR/#TEST_DIR/#g"
+    $SED -e "s#$TEST_DIR/#TEST_DIR/#g" \
+         -e "s#$SOCK_DIR/#SOCK_DIR/#g"
 }
 
 # replace occurrences of the actual IMGFMT value with IMGFMT
@@ -124,6 +125,7 @@ _filter_img_create()
     $SED -e "s#$REMOTE_TEST_DIR#TEST_DIR#g" \
         -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \
         -e "s#$TEST_DIR#TEST_DIR#g" \
+        -e "s#$SOCK_DIR#SOCK_DIR#g" \
         -e "s#$IMGFMT#IMGFMT#g" \
         -e 's#nbd:127.0.0.1:10810#TEST_DIR/t.IMGFMT#g' \
         -e "s# encryption=off##g" \
@@ -160,6 +162,7 @@ _filter_img_info()
     $SED -e "s#$REMOTE_TEST_DIR#TEST_DIR#g" \
         -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \
         -e "s#$TEST_DIR#TEST_DIR#g" \
+        -e "s#$SOCK_DIR#SOCK_DIR#g" \
         -e "s#$IMGFMT#IMGFMT#g" \
         -e 's#nbd://127.0.0.1:10810$#TEST_DIR/t.IMGFMT#g' \
         -e 's#json.*vdisk-id.*vxhs"}}#TEST_DIR/t.IMGFMT#' \
@@ -219,6 +222,7 @@ _filter_nbd()
     $SED -e '/nbd\/.*\.c:/d' \
         -e 's#127\.0\.0\.1:[0-9]*#127.0.0.1:PORT#g' \
         -e "s#?socket=$TEST_DIR#?socket=TEST_DIR#g" \
+        -e "s#?socket=$SOCK_DIR#?socket=SOCK_DIR#g" \
         -e 's#\(foo\|PORT/\?\|.sock\): Failed to .*$#\1#'
 }
 
-- 
2.21.0

[PATCH v2 05/23] iotests: Let common.nbd create socket in $SOCK_DIR

[Max Reitz]

In addition, drop the nbd_unix_socket assignment in 241 because it does
not really do anything.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/241        | 2 --
 tests/qemu-iotests/common.nbd | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/tests/qemu-iotests/241 b/tests/qemu-iotests/241
index 58b64ebf41..8dae8d39e4 100755
--- a/tests/qemu-iotests/241
+++ b/tests/qemu-iotests/241
@@ -23,8 +23,6 @@ echo "QA output created by $seq"
 
 status=1 # failure is the default!
 
-nbd_unix_socket=$TEST_DIR/test_qemu_nbd_socket
-
 _cleanup()
 {
     _cleanup_test_img
diff --git a/tests/qemu-iotests/common.nbd b/tests/qemu-iotests/common.nbd
index 24b01b60aa..a8cae8fe2c 100644
--- a/tests/qemu-iotests/common.nbd
+++ b/tests/qemu-iotests/common.nbd
@@ -19,7 +19,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-nbd_unix_socket="${TEST_DIR}/qemu-nbd.sock"
+nbd_unix_socket="${SOCK_DIR}/qemu-nbd.sock"
 nbd_tcp_addr="127.0.0.1"
 nbd_pid_file="${TEST_DIR}/qemu-nbd.pid"
 nbd_stderr_fifo="${TEST_DIR}/qemu-nbd.fifo"
-- 
2.21.0

[PATCH v2 06/23] iotests/083: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/083     |  6 +++---
 tests/qemu-iotests/083.out | 34 +++++++++++++++++-----------------
 2 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/tests/qemu-iotests/083 b/tests/qemu-iotests/083
index b270550d3e..10fdfc8ebb 100755
--- a/tests/qemu-iotests/083
+++ b/tests/qemu-iotests/083
@@ -28,7 +28,7 @@ status=1	# failure is the default!
 
 _cleanup()
 {
-	rm -f nbd.sock
+	rm -f "$SOCK_DIR/nbd.sock"
 	rm -f nbd-fault-injector.out
 	rm -f nbd-fault-injector.conf
 }
@@ -80,10 +80,10 @@ EOF
 	if [ "$proto" = "tcp" ]; then
 		nbd_addr="127.0.0.1:0"
 	else
-		nbd_addr="$TEST_DIR/nbd.sock"
+		nbd_addr="$SOCK_DIR/nbd.sock"
 	fi
 
-	rm -f "$TEST_DIR/nbd.sock"
+	rm -f "$SOCK_DIR/nbd.sock"
 
         echo > "$TEST_DIR/nbd-fault-injector.out"
 	$PYTHON nbd-fault-injector.py $extra_args "$nbd_addr" "$TEST_DIR/nbd-fault-injector.conf" >"$TEST_DIR/nbd-fault-injector.out" 2>&1 &
diff --git a/tests/qemu-iotests/083.out b/tests/qemu-iotests/083.out
index eee6dd1379..2090ee693c 100644
--- a/tests/qemu-iotests/083.out
+++ b/tests/qemu-iotests/083.out
@@ -110,43 +110,43 @@ read failed: Input/output error
 
 === Check disconnect before neg1 ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect after neg1 ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 8 neg1 ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 16 neg1 ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect before export ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect after export ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 4 export ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 12 export ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 16 export ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect before neg2 ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect after neg2 ===
 
@@ -154,11 +154,11 @@ read failed: Input/output error
 
 === Check disconnect 8 neg2 ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 10 neg2 ===
 
-qemu-io: can't open device nbd+unix:///foo?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect before request ===
 
@@ -195,23 +195,23 @@ read 512/512 bytes at offset 0
 
 === Check disconnect before neg-classic ===
 
-qemu-io: can't open device nbd+unix:///?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 8 neg-classic ===
 
-qemu-io: can't open device nbd+unix:///?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 16 neg-classic ===
 
-qemu-io: can't open device nbd+unix:///?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 24 neg-classic ===
 
-qemu-io: can't open device nbd+unix:///?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect 28 neg-classic ===
 
-qemu-io: can't open device nbd+unix:///?socket=TEST_DIR/nbd.sock
+qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
 
 === Check disconnect after neg-classic ===
 
-- 
2.21.0

[PATCH v2 07/23] iotests/140: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/140     | 8 ++++----
 tests/qemu-iotests/140.out | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/tests/qemu-iotests/140 b/tests/qemu-iotests/140
index b965b1dd5d..8d2ce5d9e3 100755
--- a/tests/qemu-iotests/140
+++ b/tests/qemu-iotests/140
@@ -34,7 +34,7 @@ _cleanup()
 {
     _cleanup_qemu
     _cleanup_test_img
-    rm -f "$TEST_DIR/nbd"
+    rm -f "$SOCK_DIR/nbd"
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
@@ -69,7 +69,7 @@ _send_qemu_cmd $QEMU_HANDLE \
 _send_qemu_cmd $QEMU_HANDLE \
     "{ 'execute': 'nbd-server-start',
        'arguments': { 'addr': { 'type': 'unix',
-                                'data': { 'path': '$TEST_DIR/nbd' }}}}" \
+                                'data': { 'path': '$SOCK_DIR/nbd' }}}}" \
     'return'
 
 _send_qemu_cmd $QEMU_HANDLE \
@@ -78,7 +78,7 @@ _send_qemu_cmd $QEMU_HANDLE \
     'return'
 
 $QEMU_IO_PROG -f raw -r -c 'read -P 42 0 64k' \
-    "nbd+unix:///drv?socket=$TEST_DIR/nbd" 2>&1 \
+    "nbd+unix:///drv?socket=$SOCK_DIR/nbd" 2>&1 \
     | _filter_qemu_io | _filter_nbd
 
 _send_qemu_cmd $QEMU_HANDLE \
@@ -87,7 +87,7 @@ _send_qemu_cmd $QEMU_HANDLE \
     'return'
 
 $QEMU_IO_PROG -f raw -r -c close \
-    "nbd+unix:///drv?socket=$TEST_DIR/nbd" 2>&1 \
+    "nbd+unix:///drv?socket=$SOCK_DIR/nbd" 2>&1 \
     | _filter_qemu_io | _filter_nbd
 
 _send_qemu_cmd $QEMU_HANDLE \
diff --git a/tests/qemu-iotests/140.out b/tests/qemu-iotests/140.out
index 67fe44a3e3..2511eb7369 100644
--- a/tests/qemu-iotests/140.out
+++ b/tests/qemu-iotests/140.out
@@ -8,7 +8,7 @@ wrote 65536/65536 bytes at offset 0
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 {"return": {}}
-qemu-io: can't open device nbd+unix:///drv?socket=TEST_DIR/nbd: Requested export not available
+qemu-io: can't open device nbd+unix:///drv?socket=SOCK_DIR/nbd: Requested export not available
 server reported: export 'drv' not present
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
-- 
2.21.0

[PATCH v2 08/23] iotests/143: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/143     | 6 +++---
 tests/qemu-iotests/143.out | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/143 b/tests/qemu-iotests/143
index 92249ac8da..f649b36195 100755
--- a/tests/qemu-iotests/143
+++ b/tests/qemu-iotests/143
@@ -29,7 +29,7 @@ status=1	# failure is the default!
 _cleanup()
 {
     _cleanup_qemu
-    rm -f "$TEST_DIR/nbd"
+    rm -f "$SOCK_DIR/nbd"
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
@@ -51,12 +51,12 @@ _send_qemu_cmd $QEMU_HANDLE \
 _send_qemu_cmd $QEMU_HANDLE \
     "{ 'execute': 'nbd-server-start',
        'arguments': { 'addr': { 'type': 'unix',
-                                'data': { 'path': '$TEST_DIR/nbd' }}}}" \
+                                'data': { 'path': '$SOCK_DIR/nbd' }}}}" \
     'return'
 
 # This should just result in a client error, not in the server crashing
 $QEMU_IO_PROG -f raw -c quit \
-    "nbd+unix:///no_such_export?socket=$TEST_DIR/nbd" 2>&1 \
+    "nbd+unix:///no_such_export?socket=$SOCK_DIR/nbd" 2>&1 \
     | _filter_qemu_io | _filter_nbd
 
 _send_qemu_cmd $QEMU_HANDLE \
diff --git a/tests/qemu-iotests/143.out b/tests/qemu-iotests/143.out
index ee71b5aa42..037d34a409 100644
--- a/tests/qemu-iotests/143.out
+++ b/tests/qemu-iotests/143.out
@@ -1,7 +1,7 @@
 QA output created by 143
 {"return": {}}
 {"return": {}}
-qemu-io: can't open device nbd+unix:///no_such_export?socket=TEST_DIR/nbd: Requested export not available
+qemu-io: can't open device nbd+unix:///no_such_export?socket=SOCK_DIR/nbd: Requested export not available
 server reported: export 'no_such_export' not present
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
-- 
2.21.0

[PATCH v2 09/23] iotests/147: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/147 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/147 b/tests/qemu-iotests/147
index ab8480b9a4..03fc2fabcf 100755
--- a/tests/qemu-iotests/147
+++ b/tests/qemu-iotests/147
@@ -32,7 +32,7 @@ NBD_IPV6_PORT_START = NBD_PORT_END
 NBD_IPV6_PORT_END   = NBD_IPV6_PORT_START + 1024
 
 test_img = os.path.join(iotests.test_dir, 'test.img')
-unix_socket = os.path.join(iotests.test_dir, 'nbd.socket')
+unix_socket = os.path.join(iotests.sock_dir, 'nbd.socket')
 
 
 def flatten_sock_addr(crumpled_address):
-- 
2.21.0

[PATCH v2 10/23] iotests/181: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/181 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/181 b/tests/qemu-iotests/181
index e317e63422..378c2899d1 100755
--- a/tests/qemu-iotests/181
+++ b/tests/qemu-iotests/181
@@ -26,7 +26,7 @@ echo "QA output created by $seq"
 
 status=1	# failure is the default!
 
-MIG_SOCKET="${TEST_DIR}/migrate"
+MIG_SOCKET="${SOCK_DIR}/migrate"
 
 _cleanup()
 {
-- 
2.21.0

[PATCH v2 11/23] iotests/182: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/182 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/182 b/tests/qemu-iotests/182
index 7f494eb9bb..1ccb850055 100755
--- a/tests/qemu-iotests/182
+++ b/tests/qemu-iotests/182
@@ -31,7 +31,7 @@ _cleanup()
 {
     _cleanup_test_img
     rm -f "$TEST_IMG.overlay"
-    rm -f "$TEST_DIR/nbd.socket"
+    rm -f "$SOCK_DIR/nbd.socket"
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
@@ -133,7 +133,7 @@ success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \
           'addr': {
               'type': 'unix',
               'data': {
-                  'path': '$TEST_DIR/nbd.socket'
+                  'path': '$SOCK_DIR/nbd.socket'
               } } } }" \
     'return' \
     'error'
-- 
2.21.0

[PATCH v2 12/23] iotests/183: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/183 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/183 b/tests/qemu-iotests/183
index 04fb344d08..bced83fae0 100755
--- a/tests/qemu-iotests/183
+++ b/tests/qemu-iotests/183
@@ -26,7 +26,7 @@ echo "QA output created by $seq"
 
 status=1 # failure is the default!
 
-MIG_SOCKET="${TEST_DIR}/migrate"
+MIG_SOCKET="${SOCK_DIR}/migrate"
 
 _cleanup()
 {
-- 
2.21.0

[PATCH v2 13/23] iotests/192: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/192     | 4 ++--
 tests/qemu-iotests/192.out | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/qemu-iotests/192 b/tests/qemu-iotests/192
index 034432272f..d2ba55dd90 100755
--- a/tests/qemu-iotests/192
+++ b/tests/qemu-iotests/192
@@ -31,7 +31,7 @@ _cleanup()
 {
     _cleanup_qemu
     _cleanup_test_img
-    rm -f "$TEST_DIR/nbd"
+    rm -f "$SOCK_DIR/nbd"
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
@@ -66,7 +66,7 @@ else
     QEMU_COMM_TIMEOUT=1
 fi
 
-_send_qemu_cmd $h "nbd_server_start unix:$TEST_DIR/nbd" "(qemu)"
+_send_qemu_cmd $h "nbd_server_start unix:$SOCK_DIR/nbd" "(qemu)"
 _send_qemu_cmd $h "nbd_server_add -w drive0" "(qemu)"
 _send_qemu_cmd $h "q" "(qemu)"
 
diff --git a/tests/qemu-iotests/192.out b/tests/qemu-iotests/192.out
index 1e0be4c4d7..b9429dbe36 100644
--- a/tests/qemu-iotests/192.out
+++ b/tests/qemu-iotests/192.out
@@ -1,7 +1,7 @@
 QA output created by 192
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) nbd_server_start unix:TEST_DIR/nbd
+(qemu) nbd_server_start unix:SOCK_DIR/nbd
 (qemu) nbd_server_add -w drive0
 (qemu) q
 *** done
-- 
2.21.0

[PATCH v2 14/23] iotests/194: Create sockets in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/194 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/194 b/tests/qemu-iotests/194
index d746ab1e21..72e47e8833 100755
--- a/tests/qemu-iotests/194
+++ b/tests/qemu-iotests/194
@@ -26,8 +26,8 @@ iotests.verify_platform(['linux'])
 
 with iotests.FilePath('source.img') as source_img_path, \
      iotests.FilePath('dest.img') as dest_img_path, \
-     iotests.FilePath('migration.sock') as migration_sock_path, \
-     iotests.FilePath('nbd.sock') as nbd_sock_path, \
+     iotests.FilePaths(['migration.sock', 'nbd.sock'], iotests.sock_dir) as \
+         [migration_sock_path, nbd_sock_path], \
      iotests.VM('source') as source_vm, \
      iotests.VM('dest') as dest_vm:
 
-- 
2.21.0

[PATCH v2 15/23] iotests/201: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/201 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/201 b/tests/qemu-iotests/201
index 7abf740fe4..86fa37e714 100755
--- a/tests/qemu-iotests/201
+++ b/tests/qemu-iotests/201
@@ -24,7 +24,7 @@ echo "QA output created by $seq"
 
 status=1	# failure is the default!
 
-MIG_SOCKET="${TEST_DIR}/migrate"
+MIG_SOCKET="${SOCK_DIR}/migrate"
 
 # get standard environment, filters and checks
 . ./common.rc
-- 
2.21.0

[PATCH v2 16/23] iotests/205: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/205 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/205 b/tests/qemu-iotests/205
index 76f6c5fa2b..4bb2c21e8b 100755
--- a/tests/qemu-iotests/205
+++ b/tests/qemu-iotests/205
@@ -24,7 +24,7 @@ import iotests
 import time
 from iotests import qemu_img_create, qemu_io, filter_qemu_io, QemuIoInteractive
 
-nbd_sock = os.path.join(iotests.test_dir, 'nbd_sock')
+nbd_sock = os.path.join(iotests.sock_dir, 'nbd_sock')
 nbd_uri = 'nbd+unix:///exp?socket=' + nbd_sock
 disk = os.path.join(iotests.test_dir, 'disk')
 
-- 
2.21.0

[PATCH v2 17/23] iotests/208: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/208 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/208 b/tests/qemu-iotests/208
index 1e202388dc..546eb1de3e 100755
--- a/tests/qemu-iotests/208
+++ b/tests/qemu-iotests/208
@@ -26,7 +26,7 @@ iotests.verify_image_format(supported_fmts=['generic'])
 
 with iotests.FilePath('disk.img') as disk_img_path, \
      iotests.FilePath('disk-snapshot.img') as disk_snapshot_img_path, \
-     iotests.FilePath('nbd.sock') as nbd_sock_path, \
+     iotests.FilePath('nbd.sock', iotests.sock_dir) as nbd_sock_path, \
      iotests.VM() as vm:
 
     img_size = '10M'
-- 
2.21.0

[PATCH v2 18/23] iotests/209: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/209 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/209 b/tests/qemu-iotests/209
index 259e991ec6..e0f464bcbe 100755
--- a/tests/qemu-iotests/209
+++ b/tests/qemu-iotests/209
@@ -24,7 +24,8 @@ from iotests import qemu_img_create, qemu_io, qemu_img_verbose, qemu_nbd, \
 
 iotests.verify_image_format(supported_fmts=['qcow2'])
 
-disk, nbd_sock = file_path('disk', 'nbd-sock')
+disk = file_path('disk')
+nbd_sock = file_path('nbd-sock', base_dir=iotests.sock_dir)
 nbd_uri = 'nbd+unix:///exp?socket=' + nbd_sock
 
 qemu_img_create('-f', iotests.imgfmt, disk, '1M')
-- 
2.21.0

[PATCH v2 19/23] iotests/222: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/222 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222
index 0ead56d574..3f9f934ad8 100644
--- a/tests/qemu-iotests/222
+++ b/tests/qemu-iotests/222
@@ -48,7 +48,7 @@ remainder = [("0xd5", "0x108000",  "32k"), # Right-end of partial-left [1]
 
 with iotests.FilePath('base.img') as base_img_path, \
      iotests.FilePath('fleece.img') as fleece_img_path, \
-     iotests.FilePath('nbd.sock') as nbd_sock_path, \
+     iotests.FilePath('nbd.sock', iotests.sock_dir) as nbd_sock_path, \
      iotests.VM() as vm:
 
     log('--- Setting up images ---')
-- 
2.21.0

[PATCH v2 20/23] iotests/223: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/223 | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/tests/qemu-iotests/223 b/tests/qemu-iotests/223
index 2ba3d8124b..b5a80e50bb 100755
--- a/tests/qemu-iotests/223
+++ b/tests/qemu-iotests/223
@@ -28,7 +28,7 @@ _cleanup()
     nbd_server_stop
     _cleanup_test_img
     _cleanup_qemu
-    rm -f "$TEST_DIR/nbd"
+    rm -f "$SOCK_DIR/nbd"
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
@@ -125,11 +125,11 @@ _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
   "arguments":{"device":"n"}}' "error" # Attempt add without server
 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
   "arguments":{"addr":{"type":"unix",
-    "data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return"
+    "data":{"path":"'"$SOCK_DIR/nbd"'"}}}}' "return"
 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
   "arguments":{"addr":{"type":"unix",
-    "data":{"path":"'"$TEST_DIR/nbd"1'"}}}}' "error" # Attempt second server
-$QEMU_NBD_PROG -L -k "$TEST_DIR/nbd"
+    "data":{"path":"'"$SOCK_DIR/nbd"1'"}}}}' "error" # Attempt second server
+$QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
   "arguments":{"device":"n", "bitmap":"b"}}' "return"
 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
@@ -145,14 +145,14 @@ _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
   "arguments":{"device":"n", "name":"n2", "writable":true,
   "bitmap":"b2"}}' "return"
-$QEMU_NBD_PROG -L -k "$TEST_DIR/nbd"
+$QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
 
 echo
 echo "=== Contrast normal status to large granularity dirty-bitmap ==="
 echo
 
 QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
-IMG="driver=nbd,export=n,server.type=unix,server.path=$TEST_DIR/nbd"
+IMG="driver=nbd,export=n,server.type=unix,server.path=$SOCK_DIR/nbd"
 $QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \
   -c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io
 $QEMU_IMG map --output=json --image-opts \
@@ -164,7 +164,7 @@ echo
 echo "=== Contrast to small granularity dirty-bitmap ==="
 echo
 
-IMG="driver=nbd,export=n2,server.type=unix,server.path=$TEST_DIR/nbd"
+IMG="driver=nbd,export=n2,server.type=unix,server.path=$SOCK_DIR/nbd"
 $QEMU_IMG map --output=json --image-opts \
   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
 
-- 
2.21.0

[PATCH v2 21/23] iotests/240: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/240 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/240 b/tests/qemu-iotests/240
index f73bc07d80..8b4337b58d 100755
--- a/tests/qemu-iotests/240
+++ b/tests/qemu-iotests/240
@@ -29,7 +29,7 @@ status=1	# failure is the default!
 
 _cleanup()
 {
-    rm -f "$TEST_DIR/nbd"
+    rm -f "$SOCK_DIR/nbd"
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
@@ -135,7 +135,7 @@ echo
 run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add", "arguments": {"driver": "null-co", "read-zeroes": true, "node-name": "hd0", "read-only": true}}
-{ "execute": "nbd-server-start", "arguments": {"addr":{"type":"unix","data":{"path":"$TEST_DIR/nbd"}}}}
+{ "execute": "nbd-server-start", "arguments": {"addr":{"type":"unix","data":{"path":"$SOCK_DIR/nbd"}}}}
 { "execute": "nbd-server-add", "arguments": {"device":"hd0"}}
 { "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread0"}}
 { "execute": "device_add", "arguments": {"id": "scsi0", "driver": "${virtio_scsi}", "iothread": "iothread0"}}
-- 
2.21.0

[PATCH v2 22/23] iotests/267: Create socket in $SOCK_DIR

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/267     | 4 ++--
 tests/qemu-iotests/267.out | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/qemu-iotests/267 b/tests/qemu-iotests/267
index d37a67c012..170e173c0a 100755
--- a/tests/qemu-iotests/267
+++ b/tests/qemu-iotests/267
@@ -29,7 +29,7 @@ status=1	# failure is the default!
 _cleanup()
 {
     _cleanup_test_img
-    rm -f "$TEST_DIR/nbd"
+    rm -f "$SOCK_DIR/nbd"
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
@@ -143,7 +143,7 @@ echo
 
 IMGOPTS="backing_file=$TEST_IMG.base" _make_test_img $size
 cat <<EOF |
-nbd_server_start unix:$TEST_DIR/nbd
+nbd_server_start unix:$SOCK_DIR/nbd
 nbd_server_add -w backing-fmt
 savevm snap0
 info snapshots
diff --git a/tests/qemu-iotests/267.out b/tests/qemu-iotests/267.out
index 9d812e3c72..8dddb4baa4 100644
--- a/tests/qemu-iotests/267.out
+++ b/tests/qemu-iotests/267.out
@@ -161,7 +161,7 @@ Internal snapshots on backing file:
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base
 Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT.base,node-name=backing-file -blockdev driver=IMGFMT,file=backing-file,node-name=backing-fmt -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file -blockdev driver=IMGFMT,file=file,backing=backing-fmt,node-name=fmt
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) nbd_server_start unix:TEST_DIR/nbd
+(qemu) nbd_server_start unix:SOCK_DIR/nbd
 (qemu) nbd_server_add -w backing-fmt
 (qemu) savevm snap0
 (qemu) info snapshots
-- 
2.21.0

[PATCH v2 23/23] iotests: Drop TEST_DIR filter from _filter_nbd

[Max Reitz]

Sockets should be placed into $SOCK_DIR instead of $TEST_DIR, so remove
the $TEST_DIR filter from _filter_nbd.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/common.filter | 1 -
 1 file changed, 1 deletion(-)

diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index 0ee6042524..f870e00e44 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -221,7 +221,6 @@ _filter_nbd()
     # Filter out the TCP port number since this changes between runs.
     $SED -e '/nbd\/.*\.c:/d' \
         -e 's#127\.0\.0\.1:[0-9]*#127.0.0.1:PORT#g' \
-        -e "s#?socket=$TEST_DIR#?socket=TEST_DIR#g" \
         -e "s#?socket=$SOCK_DIR#?socket=SOCK_DIR#g" \
         -e 's#\(foo\|PORT/\?\|.sock\): Failed to .*$#\1#'
 }
-- 
2.21.0

Re: [PATCH v2 01/23] iotests: Introduce $SOCK_DIR

[Eric Blake]

On 10/17/19 8:31 AM, Max Reitz wrote:
> Unix sockets generally have a maximum path length.  Depending on your
> $TEST_DIR, it may be exceeded and then all tests that create and use
> Unix sockets there may fail.
> 
> Circumvent this by adding a new scratch directory specifically for
> Unix socket files.  It defaults to a temporary directory (mktemp -d)
> that is completely removed after the iotests are done.
> 
> (By default, mktemp -d creates a /tmp/tmp.XXXXXXXXXX directory, which
> should be short enough for our use cases.)
> 
> Use mkdir -p to create the directory (because it seems right), and do
> the same for $TEST_DIR (because there is no reason for that to be
> created in any different way).
> 
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
>   tests/qemu-iotests/check | 15 +++++++++++++--
>   1 file changed, 13 insertions(+), 2 deletions(-)

> @@ -116,10 +117,14 @@ set_prog_path()
>   if [ -z "$TEST_DIR" ]; then
>           TEST_DIR=$PWD/scratch
>   fi
> +mkdir -p "$TEST_DIR" || _init_error 'Failed to create TEST_DIR'

This one seems fine. We are either using the user's name (and if it is 
pre-existing, not fail) or using a well-known name (if someone else 
slams in files into that directory in parallel with our test run, oh 
well).  But at least the well-known name is a directory that is probably 
already accessible only to the current user, not world-writable.

>   
> -if [ ! -e "$TEST_DIR" ]; then
> -        mkdir "$TEST_DIR"
> +tmp_sock_dir=false
> +if [ -z "$SOCK_DIR" ]; then
> +    SOCK_DIR=$(mktemp -d)
> +    tmp_sock_dir=true
>   fi
> +mkdir -p "$SOCK_DIR" || _init_error 'Failed to create SOCK_DIR'

Thinking about this again: if the user passed in a name, we probably 
want to use it no matter whether the directory already exists (mkdir -p 
makes sense: either the directory did not exist, or the user is in 
charge of passing us a directory that they already secured).  But if we 
generate our own name in a world-writable location in /tmp, using mkdir 
-p means someone else can race us to the creation of the directory, and 
potentially populate it in a way to cause us a security hole while we 
execute our tests.

I would be a bit more comfortable with:

tmp_sock_dir=false
tmp_sock_opt=-p
if [ -z "$SOCK_DIR" ]; then
     SOCK_DIR=$(mktemp -d)
     tmp_sock_dir=true
     tmp_sock_opt=      # disable -p for our generated name
fi
mkdir $tmp_sock_opt "$SOCK_DIR" || _init_error 'Failed to create SOCK_DIR'

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

Re: [PATCH v2 00/23] iotests: Add and use $SOCK_DIR

[Eric Blake]

On 10/17/19 8:31 AM, Max Reitz wrote:
> Hi,
> 
> Perhaps the main reason we cannot run important tests such as 041 in CI
> is that when they care Unix sockets in $TEST_DIR, the path may become
> too long to connect to them.
> 
> To get by this problem, this series lets the check script create a new
> temporary directory (mktemp -d) and then makes the iotests use it for
> all Unix sockets.
> 
> 
> v2:
> - Patch 1: Use mkdir -p

I just thought of another potential concern there - what do you think of 
my response there?  Depending on how that thread goes, it may work to 
just amend the commit or take it as-is without having to go to a full v3 
posting...

> - Patches 4/23: Only add the $SOCK_DIR replacement line in patch 4 and
>                  only drop the $TEST_DIR line in patch 23
>    (Took Eric’s R-b on both because that’s how I interpreted his
>    comments)

Yes, looks like you handled that well.  My R-b is okay there.


-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

Re: [PATCH v2 04/23] iotests: Filter $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/common.filter | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 05/23] iotests: Let common.nbd create socket in $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> In addition, drop the nbd_unix_socket assignment in 241 because it does
> not really do anything.

Right, common.nbd is included afterwards, so it gets overwritten.

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 13/23] iotests/192: Create socket in $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/192     | 4 ++--
>  tests/qemu-iotests/192.out | 2 +-
>  2 files changed, 3 insertions(+), 3 deletions(-)

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 15/23] iotests/201: Create socket in $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/201 | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/qemu-iotests/201 b/tests/qemu-iotests/201
> index 7abf740fe4..86fa37e714 100755
> --- a/tests/qemu-iotests/201
> +++ b/tests/qemu-iotests/201
> @@ -24,7 +24,7 @@ echo "QA output created by $seq"
>  
>  status=1	# failure is the default!
>  
> -MIG_SOCKET="${TEST_DIR}/migrate"
> +MIG_SOCKET="${SOCK_DIR}/migrate"
>  
>  # get standard environment, filters and checks
>  . ./common.rc
> 

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 16/23] iotests/205: Create socket in $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/205 | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/qemu-iotests/205 b/tests/qemu-iotests/205
> index 76f6c5fa2b..4bb2c21e8b 100755
> --- a/tests/qemu-iotests/205
> +++ b/tests/qemu-iotests/205
> @@ -24,7 +24,7 @@ import iotests
>  import time
>  from iotests import qemu_img_create, qemu_io, filter_qemu_io, QemuIoInteractive
>  
> -nbd_sock = os.path.join(iotests.test_dir, 'nbd_sock')
> +nbd_sock = os.path.join(iotests.sock_dir, 'nbd_sock')
>  nbd_uri = 'nbd+unix:///exp?socket=' + nbd_sock
>  disk = os.path.join(iotests.test_dir, 'disk')

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 20/23] iotests/223: Create socket in $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/223 | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 21/23] iotests/240: Create socket in $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/240 | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 22/23] iotests/267: Create socket in $SOCK_DIR

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/267     | 4 ++--
>  tests/qemu-iotests/267.out | 2 +-
>  2 files changed, 3 insertions(+), 3 deletions(-)

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 23/23] iotests: Drop TEST_DIR filter from _filter_nbd

[Thomas Huth]

On 17/10/2019 15.31, Max Reitz wrote:
> Sockets should be placed into $SOCK_DIR instead of $TEST_DIR, so remove
> the $TEST_DIR filter from _filter_nbd.
> 
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/common.filter | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
> index 0ee6042524..f870e00e44 100644
> --- a/tests/qemu-iotests/common.filter
> +++ b/tests/qemu-iotests/common.filter
> @@ -221,7 +221,6 @@ _filter_nbd()
>      # Filter out the TCP port number since this changes between runs.
>      $SED -e '/nbd\/.*\.c:/d' \
>          -e 's#127\.0\.0\.1:[0-9]*#127.0.0.1:PORT#g' \
> -        -e "s#?socket=$TEST_DIR#?socket=TEST_DIR#g" \
>          -e "s#?socket=$SOCK_DIR#?socket=SOCK_DIR#g" \
>          -e 's#\(foo\|PORT/\?\|.sock\): Failed to .*$#\1#'
>  }
> 

Reviewed-by: Thomas Huth <thuth@redhat.com>

Re: [PATCH v2 01/23] iotests: Introduce $SOCK_DIR

[Max Reitz]

[-- Attachment #1.1: Type: text/plain, Size: 2798 bytes --]

On 17.10.19 16:52, Eric Blake wrote:
> On 10/17/19 8:31 AM, Max Reitz wrote:
>> Unix sockets generally have a maximum path length.  Depending on your
>> $TEST_DIR, it may be exceeded and then all tests that create and use
>> Unix sockets there may fail.
>>
>> Circumvent this by adding a new scratch directory specifically for
>> Unix socket files.  It defaults to a temporary directory (mktemp -d)
>> that is completely removed after the iotests are done.
>>
>> (By default, mktemp -d creates a /tmp/tmp.XXXXXXXXXX directory, which
>> should be short enough for our use cases.)
>>
>> Use mkdir -p to create the directory (because it seems right), and do
>> the same for $TEST_DIR (because there is no reason for that to be
>> created in any different way).
>>
>> Signed-off-by: Max Reitz <mreitz@redhat.com>
>> ---
>>   tests/qemu-iotests/check | 15 +++++++++++++--
>>   1 file changed, 13 insertions(+), 2 deletions(-)
> 
>> @@ -116,10 +117,14 @@ set_prog_path()
>>   if [ -z "$TEST_DIR" ]; then
>>           TEST_DIR=$PWD/scratch
>>   fi
>> +mkdir -p "$TEST_DIR" || _init_error 'Failed to create TEST_DIR'
> 
> This one seems fine. We are either using the user's name (and if it is
> pre-existing, not fail) or using a well-known name (if someone else
> slams in files into that directory in parallel with our test run, oh
> well).  But at least the well-known name is a directory that is probably
> already accessible only to the current user, not world-writable.
> 
>>   -if [ ! -e "$TEST_DIR" ]; then
>> -        mkdir "$TEST_DIR"
>> +tmp_sock_dir=false
>> +if [ -z "$SOCK_DIR" ]; then
>> +    SOCK_DIR=$(mktemp -d)
>> +    tmp_sock_dir=true
>>   fi
>> +mkdir -p "$SOCK_DIR" || _init_error 'Failed to create SOCK_DIR'
> 
> Thinking about this again: if the user passed in a name, we probably
> want to use it no matter whether the directory already exists (mkdir -p
> makes sense: either the directory did not exist, or the user is in
> charge of passing us a directory that they already secured).  But if we
> generate our own name in a world-writable location in /tmp, using mkdir
> -p means someone else can race us to the creation of the directory, and
> potentially populate it in a way to cause us a security hole while we
> execute our tests.

I don’t quite see how this is a security hole.  mktemp -d creates the
directory, so noone can race us.

Max

> I would be a bit more comfortable with:
> 
> tmp_sock_dir=false
> tmp_sock_opt=-p
> if [ -z "$SOCK_DIR" ]; then
>     SOCK_DIR=$(mktemp -d)
>     tmp_sock_dir=true
>     tmp_sock_opt=      # disable -p for our generated name
> fi
> mkdir $tmp_sock_opt "$SOCK_DIR" || _init_error 'Failed to create SOCK_DIR'
> 



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Re: [PATCH v2 01/23] iotests: Introduce $SOCK_DIR

[Eric Blake]

On 10/18/19 4:03 AM, Max Reitz wrote:

>>>    -if [ ! -e "$TEST_DIR" ]; then
>>> -        mkdir "$TEST_DIR"
>>> +tmp_sock_dir=false
>>> +if [ -z "$SOCK_DIR" ]; then
>>> +    SOCK_DIR=$(mktemp -d)
>>> +    tmp_sock_dir=true
>>>    fi
>>> +mkdir -p "$SOCK_DIR" || _init_error 'Failed to create SOCK_DIR'
>>
>> Thinking about this again: if the user passed in a name, we probably
>> want to use it no matter whether the directory already exists (mkdir -p
>> makes sense: either the directory did not exist, or the user is in
>> charge of passing us a directory that they already secured).  But if we
>> generate our own name in a world-writable location in /tmp, using mkdir
>> -p means someone else can race us to the creation of the directory, and
>> potentially populate it in a way to cause us a security hole while we
>> execute our tests.
> 
> I don’t quite see how this is a security hole.  mktemp -d creates the
> directory, so noone can race us.

Aha - I confused 'mktemp -u' (necessary for creating a socket name) and 
'mktemp -d' (for directories).  With that confusion cleared up, yes, the 
directory is safely created (or else the burden is on the caller), so:

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

Re: [PATCH v2 00/23] iotests: Add and use $SOCK_DIR

[Max Reitz]

[-- Attachment #1.1: Type: text/plain, Size: 786 bytes --]

On 17.10.19 15:31, Max Reitz wrote:
> Hi,
> 
> Perhaps the main reason we cannot run important tests such as 041 in CI
> is that when they care Unix sockets in $TEST_DIR, the path may become
> too long to connect to them.
> 
> To get by this problem, this series lets the check script create a new
> temporary directory (mktemp -d) and then makes the iotests use it for
> all Unix sockets.
> 
> 
> v2:
> - Patch 1: Use mkdir -p
> - Patches 4/23: Only add the $SOCK_DIR replacement line in patch 4 and
>                 only drop the $TEST_DIR line in patch 23
>   (Took Eric’s R-b on both because that’s how I interpreted his
>   comments)

Thanks for the rewies, applied to my block branch:

https://git.xanclic.moe/XanClic/qemu/commits/branch/block

Max


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