diff options
author | Dave Brolley <brolley@redhat.com> | 2008-08-13 11:53:36 -0400 |
---|---|---|
committer | Dave Brolley <brolley@redhat.com> | 2008-08-13 11:53:36 -0400 |
commit | 7f7720519a6848403d91cc90269a04bade0dac2e (patch) | |
tree | 1ad37fabf7a43d685f529d238720d79c99a6d47c /stap-client | |
parent | 6503a1cce1cb2a2b88819b414650bd85340a4381 (diff) | |
download | systemtap-steved-7f7720519a6848403d91cc90269a04bade0dac2e.tar.gz systemtap-steved-7f7720519a6848403d91cc90269a04bade0dac2e.tar.xz systemtap-steved-7f7720519a6848403d91cc90269a04bade0dac2e.zip |
Minor bugs in stap-client.
Diffstat (limited to 'stap-client')
-rwxr-xr-x | stap-client | 51 |
1 files changed, 45 insertions, 6 deletions
diff --git a/stap-client b/stap-client index 405692f1..b6664bc3 100755 --- a/stap-client +++ b/stap-client @@ -16,6 +16,10 @@ # request. If a kernel module is generated, this script will load the module # and execute it using 'staprun', if requested. +# Catch ctrl-c and other termination signals +trap 'terminate' SIGTERM +trap 'interrupt' SIGINT + #----------------------------------------------------------------------------- # Helper functions. #----------------------------------------------------------------------------- @@ -472,11 +476,11 @@ function unpack_response { sed -i "s,^Keeping temporary directory.*,Keeping temporary directory \"$local_tmpdir_stap\"," $tmpdir_server/stderr tmpdir_stap=$local_tmpdir_stap else + # Make sure we own the systemtap temp directory if we are root. + test $EUID = 0 && chown $EUID:$EUID $tmpdir_server/$tmpdir_stap + # The temp directory will be moved to here below. tmpdir_stap=`pwd`/$tmpdir_stap fi - - # Make sure we own the systemtap temp directory if we are root. - test $EUID = 0 && chown $EUID:$EUID $tmpdir_stap fi # Move the contents of the server's tmpdir down one level to the @@ -568,7 +572,7 @@ function maybe_call_staprun { # There should be a systemtap temporary directory. if test "X$tmpdir_stap" = "X"; then # OK if no script specified - if test "X$script_file" != "X"; then + if test "X$e_script" != "X" -o "X$script_file" != "X"; then fatal "ERROR: systemtap temporary directory is missing in server response" fi return @@ -582,13 +586,26 @@ function maybe_call_staprun { if test $p_phase = 5; then # We have a module. Try to run it + # If a -c command was specified, pass it along. + if test "X$c_cmd" != "X"; then + staprun_opts="-c '$c_cmd'" + fi + + # The -v level will be one less than what was specified + # for us. for ((--v_level; $v_level > 0; --v_level)) do staprun_opts="$staprun_opts -v" done - PATH=`staprun_PATH` staprun $staprun_opts \ - $tmpdir_stap/`ls $tmpdir_stap | grep '.ko$'` + + # Run it in the background and wait for it. This + # way any signals send to us can be caught. + PATH=`staprun_PATH` eval staprun "$staprun_opts" \ + $tmpdir_stap/`ls $tmpdir_stap | grep '.ko$'` & + wait %?staprun rc=$? + # 127 from wait means that the job was already finished. + test $rc=127 && rc=0 fi fi } @@ -655,6 +672,28 @@ function cleanup { fi } +# function: terminate +# +# Terminate gracefully. +function terminate { + # Clean up + echo "$0: terminated by signal" + cleanup + + # Kill any running staprun job + kill -s SIGTERM %?staprun + + exit 1 +} + +# function: interrupt +# +# Pass an interrupt (ctrl-C) to staprun +function interrupt { + # Pass the signal on to any running staprun job + kill -s SIGINT %?staprun +} + #----------------------------------------------------------------------------- # Beginning of main line execution. #----------------------------------------------------------------------------- |