On 31.10.2016 16:38, Fam Zheng wrote:
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  tests/Makefile.include  |   2 +
>  tests/test-image-lock.c | 179 ++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 181 insertions(+)
>  create mode 100644 tests/test-image-lock.c
> 
> diff --git a/tests/Makefile.include b/tests/Makefile.include
> index cd058ef..65f8500 100644
> --- a/tests/Makefile.include
> +++ b/tests/Makefile.include
> @@ -56,6 +56,7 @@ check-unit-y += tests/test-hbitmap$(EXESUF)
>  gcov-files-test-hbitmap-y = blockjob.c
>  check-unit-y += tests/test-blockjob$(EXESUF)
>  check-unit-y += tests/test-blockjob-txn$(EXESUF)
> +check-unit-y += tests/test-image-lock$(EXESUF)
>  check-unit-y += tests/test-x86-cpuid$(EXESUF)
>  # all code tested by test-x86-cpuid is inside topology.h
>  gcov-files-test-x86-cpuid-y =
> @@ -493,6 +494,7 @@ tests/test-rfifolock$(EXESUF): tests/test-rfifolock.o $(test-util-obj-y)
>  tests/test-throttle$(EXESUF): tests/test-throttle.o $(test-block-obj-y)
>  tests/test-blockjob$(EXESUF): tests/test-blockjob.o $(test-block-obj-y) $(test-util-obj-y)
>  tests/test-blockjob-txn$(EXESUF): tests/test-blockjob-txn.o $(test-block-obj-y) $(test-util-obj-y)
> +tests/test-image-lock$(EXESUF): tests/test-image-lock.o $(test-block-obj-y) $(libqos-obj-y)
>  tests/test-thread-pool$(EXESUF): tests/test-thread-pool.o $(test-block-obj-y)
>  tests/test-iov$(EXESUF): tests/test-iov.o $(test-util-obj-y)
>  tests/test-hbitmap$(EXESUF): tests/test-hbitmap.o $(test-util-obj-y)
> diff --git a/tests/test-image-lock.c b/tests/test-image-lock.c
> new file mode 100644
> index 0000000..db5a723
> --- /dev/null
> +++ b/tests/test-image-lock.c
> @@ -0,0 +1,179 @@
> +/*
> + * Image lock tests
> + *
> + * Copyright 2016 Red Hat, Inc.
> + *
> + * Authors:
> + *  Fam Zheng <famz@redhat.com>
> + *
> + * This work is licensed under the terms of the GNU LGPL, version 2 or later.
> + * See the COPYING.LIB file in the top-level directory.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qapi/error.h"
> +#include "qemu/error-report.h"
> +#include "qapi/qmp/qbool.h"
> +#include "sysemu/block-backend.h"
> +
> +#define TEST_IMAGE_SIZE 4096
> +static char test_image[] = "/tmp/qtest.XXXXXX";
> +static int test_image_fd;
> +
> +static BlockBackend *open_test_image(int flags, bool disable_lock)
> +{
> +    QDict *opts = qdict_new();
> +
> +    qdict_set_default_str(opts, "filename", test_image);
> +    qdict_set_default_str(opts, "driver", "file");
> +    if (disable_lock) {
> +        qdict_put(opts, "disable-lock", qbool_from_bool(true));
> +    }
> +
> +    return blk_new_open(NULL, NULL, opts, flags | BDRV_O_ALLOW_RDWR, NULL);
> +}
> +
> +#define RW true
> +#define RO false
> +#define SHARE true
> +#define EXCLU false
> +
> +static struct CompatData {
> +    bool write_1;
> +    bool share_1;
> +    bool write_2;
> +    bool share_2;
> +    bool compatible;
> +} compat_data[] = {
> +    /* Write 1, Share 1, Write 2, Share 2, Compatible. */
> +    { RO,       SHARE,   RO,      SHARE,   true,  },
> +    { RO,       SHARE,   RO,      EXCLU,   true,  },
> +    { RO,       SHARE,   RW,      SHARE,   true,  },
> +    { RO,       SHARE,   RW,      EXCLU,   true,  },
> +    { RO,       EXCLU,   RO,      SHARE,   true,  },
> +    { RO,       EXCLU,   RO,      EXCLU,   true,  },
> +    { RO,       EXCLU,   RW,      SHARE,   false, },
> +    { RO,       EXCLU,   RW,      EXCLU,   false, },
> +};

Without having looked closer at the test, what about RW/RW compatibility?

Max