On Tue, Apr 15, 2014 at 12:15:33PM +0100, Sami Kerola wrote: > +ts_check_test_command "$TS_CMD_KILL" > +ts_check_test_command "$TS_CMD_SU" ts_check_test_command "TS_HELPER_SIGRECEIVE" > +if ! getent passwd nobody >/dev/null; then > + ts_skip "no nobody user" > +fi > + > +TEST_PID='' > +TS_CWD="${0%/*}" Please, use $TS_OUTDIR. The tests should not write to another places. The output/ is the directory that clean up our build system. > +HELPER_SYMLINK="$TS_CWD/$(mktemp -u XXXXXXXXXXXXXXX)" > +ln -s "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK" > +trap "rm -f $HELPER_SYMLINK" 0 > + > +su nobody -s /bin/sh -c "$HELPER_SYMLINK $TS_CWD/nobody" >> "$TS_OUTPUT" 2>&1 & I don't understand this idea, on my system Mr.Nobody can not write to my directories. It would be also better to add --setgit and --setuid to the helper to avoid extra su(1) process, then you can use TEST_PID=$! > +# test_sigreceive needs time to start up > +for i in 0.01 0.1 1 1 1 1; do > + test -f "$TS_CWD/nobody" && { up=1; break; } > + sleep $i > +done The question is if we really need to use the PID files. Would be possible to use test_sigreceive that does not write anything? You can for example to use awk '/SigCgt/ { print $2}' /proc/<pid>/status to check if the signal handlers are already initialized (the final mask is 800000027ffbfeff on my system). Karel -- Karel Zak <kzak@xxxxxxxxxx> http://karelzak.blogspot.com -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html