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generic: add OFD lock tests
Test OFD locks. Use fcntl F_OFD_SETLK/F_OFD_GETLK, to verify we are being given correct advices through getlk by kernel. The basic idea is one setlk routine setting locks via fcntl *_SETLK, followed by operations like clone, dup then close fd; another routine getlk getting locks via fcntl *_GETLK. Firstly in setlk routine process P0, place a lock L0 on an opened testfile, then do clone or dup and close relative fd. In getlk process P2, do fcntl *_GETLK with lock L1 after get notified by setlk routine. In the end, getlk routine check the returned struct flock.l_type to see if the lock mechanism works fine. Test combainations of: - shared or exclusive lock - these locks are conflicting or not - one OFD lock and one POSIX lock - that open testfile RDONLY or RDWR - clone with CLONE_FILES or not - dup and close newfd [eguan: made some minor non-functional changes] Signed-off-by: Xiong Zhou <xzhou@redhat.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Xiong Zhou
Eryu Guan
Executable
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#! /bin/bash
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# FS QA Test 478
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#
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# Test OFD lock. fcntl F_OFD_SETLK to set lock, then F_OFD_GETLK
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# to verify we are being given correct advice by kernel.
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#
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# OFD lock combines POSIX lock and BSD flock:
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# + does not share between threads
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# + byte granularity
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# (both tested by LTP/fcntl3{4,6})
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# + only release automatically after all open fd closed
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#
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# This test target the third one and expand a little bit.
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#
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# The basic idea is one setlk routine setting locks via fcntl
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# *_SETLK, followed by operations like clone, dup then close fd;
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# another routine getlk getting locks via fcntl *_GETLK.
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#
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# Firstly in setlk routine process P0, place a lock L0 on an
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# opened testfile, then
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#
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# + clone() a child P1 to close the fd then tell getlk to go,
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# parent P0 wait getlk done then close fd.
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# or
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# + dup() fd to a newfd then close newfd then tell getlk to go,
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# then wait getlk done then close fd.
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#
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# In getlk process P2, do fcntl *_GETLK with lock L1 after get
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# notified by setlk routine.
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#
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# In the end, getlk routine check the returned struct flock.l_type
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# to see if the lock mechanism works fine.
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#
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# When testing with clone,
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# + CLONE_FILES set, close releases all locks;
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# + CLONE_FILES not set, locks remain in P0;
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#
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# If L0 is a POSIX lock,
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# + it is not inherited into P1
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# + it is released after dup & close
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#
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# If L0 is a OFD lock,
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# + it is inherited into P1
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# + it is not released after dup & close
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#
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# setlk routine: * getlk routine:
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# start * start
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# | * |
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# open file * open file
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# | * |
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# init sem * |
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# | * |
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# wait init sem done * wait init sem done
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# | * |
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# setlk L0 * |
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# | * |
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# |---------clone()--------| * |
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# | | * |
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# |(child P1) (parent P0)| * | (P2)
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# | | * |
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# | close fd * |
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# | | * |
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# | set sem0=0 * wait sem0==0
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# | | * |
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# | | * getlk L1
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# | | * |
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# wait sem1==0 | * set sem1=0
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# | | * |
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# exit wait child * |
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# | * check result
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# cleanup * |
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# | * |
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# exit * exit
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#
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# We can test combainations of:
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# + shared or exclusive lock
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# + these locks are conflicting or not
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# + one OFD lock and one POSIX lock
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# + that open testfile RDONLY or RDWR
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# + clone with CLONE_FILES or not
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# + dup and close newfd
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2018 Red Hat Inc. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# Modify as appropriate.
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_supported_fs generic
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_supported_os Linux
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_require_test
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_require_ofd_locks
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# real QA test starts here
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# prepare a 4k testfile in TEST_DIR
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$XFS_IO_PROG -f -c "pwrite -S 0xFF 0 4096" \
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$TEST_DIR/testfile >> $seqres.full 2>&1
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do_test()
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{
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local soptions="$1"
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local goptions="$2"
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# print options and getlk output for debug
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echo $* >> $seqres.full 2>&1
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# -s : do setlk
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$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
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# -g : do getlk
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$here/src/t_ofd_locks $goptions $TEST_DIR/testfile | \
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tee -a $seqres.full
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wait $!
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# add -F to clone with CLONE_FILES
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soptions="$1 -F"
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# with -F, new locks are always file to place
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$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
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$here/src/t_ofd_locks $goptions $TEST_DIR/testfile | \
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tee -a $seqres.full
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wait $!
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# add -d to dup and close
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soptions="$1 -d"
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$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
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$here/src/t_ofd_locks $goptions $TEST_DIR/testfile | \
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tee -a $seqres.full
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wait $!
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}
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# Always setlk at range [0,9], getlk at range [0,9] [5,24] or [20,29].
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# To open file RDONLY or RDWR should not break the locks.
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# POSIX locks should be released after closed fd, so it wont conflict
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# with other locks in tests
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# -P : operate posix lock
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# -w : operate on F_WRLCK
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# -r : operate on F_RDLCK
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# -R : open file RDONLY
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# -W : open file RDWR
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# -o : file offset where the lock starts
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# -l : lock length
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# -F : clone with CLONE_FILES in setlk
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# -d : dup and close in setlk
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# setlk wrlck [0,9], getlk wrlck [0,9], expect
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# + wrlck when CLONE_FILES not set
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# + unlck when CLONE_FILES set
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# + wrlck when dup & close
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do_test "-s -w -o 0 -l 10 -W" "-g -w -o 0 -l 10 -W" "wrlck" "unlck" "wrlck"
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# setlk wrlck [0,9], getlk posix wrlck [5,24]
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do_test "-s -w -o 0 -l 10 -W" "-g -w -o 5 -l 20 -W -P" "wrlck" "unlck" "wrlck"
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# setlk wrlck [0,9], getlk wrlck [20,29]
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do_test "-s -w -o 0 -l 10 -W" "-g -w -o 20 -l 10 -W" "unlck" "unlck" "unlck"
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# setlk posix wrlck [0,9], getlk wrlck [5,24]
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do_test "-s -w -o 0 -l 10 -W -P" "-g -w -o 5 -l 20 -W" "wrlck" "unlck" "unlck"
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# setlk posix wrlck [0,9], getlk wrlck [20,29]
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do_test "-s -w -o 0 -l 10 -W -P" "-g -w -o 20 -l 10 -W" "unlck" "unlck" "unlck"
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# setlk wrlck [0,9], getlk rdlck [0,9]
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do_test "-s -w -o 0 -l 10 -W" "-g -r -o 0 -l 10 -W" "wrlck" "unlck" "wrlck"
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# setlk wrlck [0,9], getlk posix rdlck [5,24]
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do_test "-s -w -o 0 -l 10" "-g -r -o 5 -l 20 -P" "wrlck" "unlck" "wrlck"
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# setlk wrlck [0,9], getlk rdlck [20,29]
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do_test "-s -w -o 0 -l 10" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
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# setlk posix wrlck [0,9], getlk rdlck [5,24]
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do_test "-s -w -o 0 -l 10 -P" "-g -r -o 5 -l 20" "wrlck" "unlck" "unlck"
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# setlk posix wrlck [0,9], getlk rdlck [20,29]
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do_test "-s -w -o 0 -l 10 -P" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk wrlck [0,9], open RDONLY
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do_test "-s -r -o 0 -l 10 -R" "-g -w -o 0 -l 10 -R" "rdlck" "unlck" "rdlck"
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# setlk rdlck [0,9], getlk wrlck [5,24], open RDONLY
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do_test "-s -r -o 0 -l 10 -R" "-g -w -o 5 -l 20 -R -P" "rdlck" "unlck" "rdlck"
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# setlk posix rdlck [0,9], getlk wrlck [5,24], open RDONLY
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do_test "-s -r -o 0 -l 10 -R -P" "-g -w -o 5 -l 20 -R" "rdlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk wrlck [0,9]
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do_test "-s -r -o 0 -l 10" "-g -w -o 0 -l 10" "rdlck" "unlck" "rdlck"
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# setlk rdlck [0,9], getlk posix wrlck [5,24]
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do_test "-s -r -o 0 -l 10" "-g -w -o 5 -l 20 -P" "rdlck" "unlck" "rdlck"
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# setlk posix rdlck [0,9], getlk wrlck [5,24]
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do_test "-s -r -o 0 -l 10 -P" "-g -w -o 5 -l 20" "rdlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk wrlck [20,29], open RDONLY
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do_test "-s -r -o 0 -l 10 -R" "-g -w -o 20 -l 10 -R" "unlck" "unlck" "unlck"
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# setlk posix rdlck [0,9], getlk wrlck [20,29], open RDONLY
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do_test "-s -r -o 0 -l 10 -R -P" "-g -w -o 20 -l 10 -R" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk wrlck [20,29]
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do_test "-s -r -o 0 -l 10" "-g -w -o 20 -l 10" "unlck" "unlck" "unlck"
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# setlk posix rdlck [0,9], getlk wrlck [20,29]
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do_test "-s -r -o 0 -l 10 -P" "-g -w -o 20 -l 10" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk rdlck [0,9], open RDONLY
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do_test "-s -r -o 0 -l 10 -R" "-g -r -o 0 -l 10 -R" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk posix rdlck [0,9], open RDONLY
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do_test "-s -r -o 0 -l 10 -R" "-g -r -o 0 -l 10 -R -P" "unlck" "unlck" "unlck"
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# setlk posix rdlck [0,9], getlk rdlck [0,9], open RDONLY
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do_test "-s -r -o 0 -l 10 -R -P" "-g -r -o 0 -l 10 -R" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk rdlck [0,9]
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do_test "-s -r -o 0 -l 10" "-g -r -o 0 -l 10" "unlck" "unlck" "unlck"
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# setlk posix rdlck [0,9], getlk rdlck [0,9]
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do_test "-s -r -o 0 -l 10 -P" "-g -r -o 0 -l 10" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk rdlck [20,29], open RDONLY
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do_test "-s -r -o 0 -l 10 -R" "-g -r -o 20 -l 10 -R" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk posix rdlck [20,29], open RDONLY
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do_test "-s -r -o 0 -l 10 -R" "-g -r -o 20 -l 10 -R -P" "unlck" "unlck" "unlck"
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# setlk posix rdlck [0,9], getlk rdlck [20,29], open RDONLY
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do_test "-s -r -o 0 -l 10 -R -P" "-g -r -o 20 -l 10 -R" "unlck" "unlck" "unlck"
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# setlk rdlck [0,9], getlk rdlck [20,29]
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do_test "-s -r -o 0 -l 10" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
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# setlk posix rdlck [0,9], getlk rdlck [20,29]
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do_test "-s -r -o 0 -l 10 -P" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
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# success, all done
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status=0
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exit
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