[LTP] [PATCH v2 7/7] tst_net.sh/tst_rhost_run: Add debugging

[Xiao Yang <yangx.jy@cn.fujitsu.com>]

On 2020/7/11 1:20, Petr Vorel wrote:
> via TST_NET_RHOST_RUN_DEBUG=1 and use it in tst_rhost_run.sh.
Hi Petr,

Acked-by: Xiao Yang <yangx.jy@cn.fujitsu.com>

Thanks,
Xiao Yang

> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
> changes v1->v2:
> * Use TST_NET_RHOST_RUN_DEBUG=1 instead of -d in tst_rhost_run
> This requires to whitelist it in tst_test.sh.
> * use tst_res_ TINFO instead of tst_net_debug
>
>
> Kind regards,
> Petr
>
>  lib/newlib_tests/shell/net/tst_rhost_run.sh |  2 ++
>  testcases/lib/tst_net.sh                    | 23 +++++++++++++++------
>  testcases/lib/tst_test.sh                   |  2 +-
>  testcases/network/README.md                 |  3 +++
>  4 files changed, 23 insertions(+), 7 deletions(-)
>
> diff --git a/lib/newlib_tests/shell/net/tst_rhost_run.sh b/lib/newlib_tests/shell/net/tst_rhost_run.sh
> index 4c034a4ac..9b058a57a 100755
> --- a/lib/newlib_tests/shell/net/tst_rhost_run.sh
> +++ b/lib/newlib_tests/shell/net/tst_rhost_run.sh
> @@ -6,6 +6,8 @@ TST_TESTFUNC=do_test
>  PATH="$(dirname $0)/../../../../testcases/lib/:$PATH"
>  . tst_net.sh
>  
> +export TST_NET_RHOST_RUN_DEBUG=1
> +
>  do_test()
>  {
>  	local file="/etc/fstab"
> diff --git a/testcases/lib/tst_net.sh b/testcases/lib/tst_net.sh
> index f6ac4c087..d939a5780 100644
> --- a/testcases/lib/tst_net.sh
> +++ b/testcases/lib/tst_net.sh
> @@ -138,15 +138,16 @@ init_ltp_netspace()
>  # -s safe option, if something goes wrong, will exit with TBROK
>  # -u USER for ssh (default root)
>  # RETURN: 0 on success, 1 on failure
> +# TST_NET_RHOST_RUN_DEBUG=1 enables debugging
>  tst_rhost_run()
>  {
>  	local post_cmd=' || echo RTERR'
>  	local user="root"
>  	local ret=0
> -	local cmd out output pre_cmd safe
> +	local cmd out output pre_cmd rcmd sh_cmd safe use
>  
>  	local OPTIND
> -	while getopts :bsc:u: opt; do
> +	while getopts :bc:su: opt; do
>  		case "$opt" in
>  		b) [ "${TST_USE_NETNS:-}" ] && pre_cmd= || pre_cmd="nohup"
>  		   post_cmd=" > /dev/null 2>&1 &"
> @@ -166,14 +167,24 @@ tst_rhost_run()
>  		return 1
>  	fi
>  
> +	sh_cmd="$pre_cmd $cmd $post_cmd"
> +
>  	if [ -n "${TST_USE_NETNS:-}" ]; then
> -		output=$($LTP_NETNS sh -c \
> -			"$pre_cmd $cmd $post_cmd" $out 2>&1 || echo 'RTERR')
> +		use="NETNS"
> +		rcmd="$LTP_NETNS sh -c"
>  	else
>  		tst_require_cmds ssh
> -		output=$(ssh -nq $user@$RHOST \
> -			"$pre_cmd $cmd $post_cmd" $out 2>&1 || echo 'RTERR')
> +		use="SSH"
> +		rcmd="ssh -nq $user@$RHOST"
> +	fi
> +
> +	if [ "$TST_NET_RHOST_RUN_DEBUG" = 1 ]; then
> +		tst_res_ TINFO "tst_rhost_run: cmd: $cmd"
> +		tst_res_ TINFO "$use: $rcmd \"$sh_cmd\" $out 2>&1"
>  	fi
> +
> +	output=$($rcmd "$sh_cmd" $out 2>&1 || echo 'RTERR')
> +
>  	echo "$output" | grep -q 'RTERR$' && ret=1
>  	if [ $ret -eq 1 ]; then
>  		output=$(echo "$output" | sed 's/RTERR//')
> diff --git a/testcases/lib/tst_test.sh b/testcases/lib/tst_test.sh
> index 2e637b25b..fa97acbac 100644
> --- a/testcases/lib/tst_test.sh
> +++ b/testcases/lib/tst_test.sh
> @@ -506,7 +506,7 @@ tst_run()
>  			NEEDS_DRIVERS|FS_TYPE|MNTPOINT|MNT_PARAMS);;
>  			IPV6|IPVER|TEST_DATA|TEST_DATA_IFS);;
>  			RETRY_FUNC|RETRY_FN_EXP_BACKOFF|TIMEOUT);;
> -			NET_DATAROOT|NET_MAX_PKT);;
> +			NET_DATAROOT|NET_MAX_PKT|NET_RHOST_RUN_DEBUG);;
>  			*) tst_res TWARN "Reserved variable TST_$_tst_i used!";;
>  			esac
>  		done
> diff --git a/testcases/network/README.md b/testcases/network/README.md
> index 1c19a2c15..081ce834a 100644
> --- a/testcases/network/README.md
> +++ b/testcases/network/README.md
> @@ -1,5 +1,8 @@
>  # LTP Network Tests
>  
> +Both single and two host configurations support debugging via
> +`TST_NET_RHOST_RUN_DEBUG=1` environment variable.
> +
>  ## Single Host Configuration
>  
>  It is the default configuration (if the `RHOST` environment variable is not