| #!/bin/sh |
| |
| ################################################################################ |
| ## ## |
| ## Copyright (c) 2015 SUSE ## |
| ## ## |
| ## This program is free software; you can redistribute it and#or modify ## |
| ## it under the terms of the GNU General Public License as published by ## |
| ## the Free Software Foundation; either version 2 of the License, or ## |
| ## (at your option) any later version. ## |
| ## ## |
| ## This program is distributed in the hope that it will be useful, but ## |
| ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## |
| ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ## |
| ## for more details. ## |
| ## ## |
| ## You should have received a copy of the GNU General Public License ## |
| ## along with this program; if not, write to the Free Software ## |
| ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 ## |
| ## USA ## |
| ## ## |
| ## Author: Cedric Hnyda <chnyda@suse.com> ## |
| ## ## |
| ################################################################################ |
| |
| # Usage |
| # ./pids.sh caseno max |
| # |
| TST_CLEANUP=cleanup |
| TST_SETUP=setup |
| TST_TESTFUNC=do_test |
| TST_POS_ARGS=2 |
| TST_USAGE=usage |
| TST_NEEDS_ROOT=1 |
| |
| . tst_test.sh |
| |
| caseno=$1 |
| max=$2 |
| mounted=1 |
| |
| usage() |
| { |
| cat << EOF |
| usage: $0 caseno max_processes |
| |
| caseno - testcase number from interval 1-5 |
| max_processes - maximal number of processes to attach |
| (applicable to testcase 1-4) |
| OPTIONS |
| EOF |
| } |
| |
| cleanup() |
| { |
| killall -9 pids_task2 >/dev/null 2>&1 |
| |
| tst_res TINFO "removing created directories" |
| rmdir $testpath |
| if [ "$mounted" -ne "1" ]; then |
| tst_res TINFO "Umounting pids" |
| umount $mount_point |
| rmdir $mount_point |
| fi |
| } |
| |
| setup() |
| { |
| exist=`grep -w pids /proc/cgroups | cut -f1`; |
| if [ "$exist" = "" ]; then |
| tst_brk TCONF NULL "pids not supported" |
| fi |
| |
| mount_point=`grep -w pids /proc/mounts | cut -f 2 | cut -d " " -f2` |
| |
| if [ "$mount_point" = "" ]; then |
| mounted=0 |
| mount_point=/dev/cgroup |
| fi |
| |
| testpath=$mount_point/ltp_$TCID |
| |
| if [ "$mounted" -eq "0" ]; then |
| ROD mkdir -p $mount_point |
| ROD mount -t cgroup -o pids none $mount_point |
| fi |
| ROD mkdir -p $testpath |
| } |
| |
| start_pids_tasks2() |
| { |
| nb=$1 |
| for i in `seq 1 $nb`; do |
| pids_task2 & |
| echo $! > $testpath/tasks |
| done |
| |
| if [ $(cat "$testpath/tasks" | wc -l) -ne $nb ]; then |
| tst_brk TBROK "failed to attach process" |
| fi |
| } |
| |
| stop_pids_tasks() |
| { |
| for i in `cat $testpath/tasks`; do |
| ROD kill -9 $i |
| wait $i |
| done |
| } |
| |
| case1() |
| { |
| start_pids_tasks2 $max |
| |
| # should return 0 because there is no limit |
| pids_task1 "$testpath/tasks" |
| ret=$? |
| |
| if [ "$ret" -eq "2" ]; then |
| tst_res TFAIL "fork failed unexpectedly" |
| elif [ "$ret" -eq "0" ]; then |
| tst_res TPASS "fork didn't fail" |
| else |
| tst_res TBROK "pids_task1 failed" |
| fi |
| |
| stop_pids_tasks |
| } |
| |
| case2() |
| { |
| tmp=$((max - 1)) |
| tst_res TINFO "limit the number of pid to $max" |
| ROD echo $max \> $testpath/pids.max |
| |
| start_pids_tasks2 $tmp |
| |
| # should return 2 because the limit of pids is reached |
| pids_task1 "$testpath/tasks" |
| ret=$? |
| |
| if [ "$ret" -eq "2" ]; then |
| tst_res TPASS "fork failed as expected" |
| elif [ "$ret" -eq "0" ]; then |
| tst_res TFAIL "fork didn't fail despite the limit" |
| else |
| tst_res TBROK "pids_task1 failed" |
| fi |
| |
| stop_pids_tasks |
| } |
| |
| case3() |
| { |
| lim=$((max + 2)) |
| tst_res TINFO "limit the number of avalaible pid to $lim" |
| ROD echo $lim \> $testpath/pids.max |
| |
| start_pids_tasks2 $max |
| |
| pids_task1 "$testpath/tasks" |
| ret=$? |
| |
| if [ "$ret" -eq "2" ]; then |
| tst_res TFAIL "fork failed unexpectedly" |
| elif [ "$ret" -eq "0" ]; then |
| tst_res TPASS "fork worked as expected" |
| else |
| tst_res TBROK "pids_task1 failed" |
| fi |
| |
| stop_pids_tasks |
| } |
| |
| case4() |
| { |
| tst_res TINFO "limit the number of avalaible pid to 0" |
| ROD echo 0 \> $testpath/pids.max |
| |
| start_pids_tasks2 $max |
| |
| tst_res TPASS "all process were attached" |
| |
| stop_pids_tasks |
| } |
| |
| case5() |
| { |
| tst_res TINFO "try to limit the number of avalaible pid to -1" |
| echo -1 > $testpath/pids.max |
| |
| if [ "$?" -eq "0" ]; then |
| tst_res TFAIL "managed to set the limit to -1" |
| else |
| tst_res TPASS "didn't manage to set the limit to -1" |
| fi |
| } |
| |
| do_test() |
| { |
| tst_res TINFO "Running testcase $caseno with $max processes" |
| case$caseno |
| } |
| |
| tst_run |