[DTrace-devel] [PATCH v2] test: Add test for option "linkmode"

[Kris Van Hees]

On Sat, Mar 11, 2023 at 12:30:22PM -0500, eugene.loh--- via DTrace-devel wrote:
> From: Eugene Loh <eugene.loh at oracle.com>
> 
> Signed-off-by: Eugene Loh <eugene.loh at oracle.com>

Reviewed-by: Kris Van Hees <kris.van.hees at oracle.com>

> ---
>  test/unittest/options/tst.linkmode.r  | 17 ++++++++++++
>  test/unittest/options/tst.linkmode.sh | 39 +++++++++++++++++++++++++++
>  2 files changed, 56 insertions(+)
>  create mode 100644 test/unittest/options/tst.linkmode.r
>  create mode 100755 test/unittest/options/tst.linkmode.sh
> 
> diff --git a/test/unittest/options/tst.linkmode.r b/test/unittest/options/tst.linkmode.r
> new file mode 100644
> index 00000000..4b453f56
> --- /dev/null
> +++ b/test/unittest/options/tst.linkmode.r
> @@ -0,0 +1,17 @@
> +try
> +Linux version 
> +
> +try -xlinkmode=static
> +Linux version 
> +
> +try -xlinkmode=kernel
> +Linux version 
> +
> +try -xlinkmode=foo
> +try -xlinkmode=dynamic
> +try -xlinkmode=dynamic -xknodefs
> +Linux version 
> +
> +-- @@stderr --
> +dtrace: failed to set -x linkmode: Invalid value for specified option
> +dtrace: invalid probe specifier BEGIN { trace((string)`linux_banner); exit(0); }: relocation remains against kernel symbol vmlinux`linux_banner (offset {ptr})
> diff --git a/test/unittest/options/tst.linkmode.sh b/test/unittest/options/tst.linkmode.sh
> new file mode 100755
> index 00000000..4e28f8bd
> --- /dev/null
> +++ b/test/unittest/options/tst.linkmode.sh
> @@ -0,0 +1,39 @@
> +#!/bin/bash
> +#
> +# Oracle Linux DTrace.
> +# Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
> +# Licensed under the Universal Permissive License v 1.0 as shown at
> +# http://oss.oracle.com/licenses/upl.
> +#
> +
> +# @@nosort
> +
> +dtrace=$1
> +
> +function mytest() {
> +	echo try $1
> +	$dtrace $1 -qn 'BEGIN { trace((string)`linux_banner); exit(0); }' | cut -c-14
> +}
> +
> +# Test different link modes.
> +# - (default) should be the same as "kernel"
> +# - "static" means that all symbols are static
> +# - "dynamic" means that all symbols are dynamic
> +# - "kernel" means that kernel symbols are static while user symbols are dynamic
> +# - "foo" would be unrecognized
> +
> +# But no DTrace (even Solaris) supported userspace symbol resolving.
> +# So (default), "static", and "kernel" should all be the same.
> +# They should all work.
> +mytest " "
> +mytest "-xlinkmode=static"
> +mytest "-xlinkmode=kernel"
> +
> +# These should not work.
> +mytest "-xlinkmode=foo"
> +mytest "-xlinkmode=dynamic"
> +
> +# This should work.
> +mytest "-xlinkmode=dynamic -xknodefs"
> +
> +exit 0
> -- 
> 2.18.4
> 
> 
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