tests/generic/478 - pub/scm/fs/xfs/xfstests-dev - Git at Google

 #! /bin/bash
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (c) 2018 Red Hat Inc.  All Rights Reserved.
 #
 # FS QA Test 478
 #
 # Test OFD lock. fcntl F_OFD_SETLK to set lock, then F_OFD_GETLK
 # to verify we are being given correct advice by kernel.
 #
 # OFD lock combines POSIX lock and BSD flock:
 #   + does not share between threads
 #   + byte granularity
 #            (both tested by LTP/fcntl3{4,6})
 #   + only release automatically after all open fd closed
 #
 # This test target the third one and expand a little bit.
 #
 # 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
 #
 #   + clone() a child P1 to close the fd then tell getlk to go,
 #     parent P0 wait getlk done then close fd.
 # or
 #   + dup() fd to a newfd then close newfd then tell getlk to go,
 #     then wait getlk done then close 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.
 #
 # When testing with clone,
 #    + CLONE_FILES set, close releases all locks;
 #    + CLONE_FILES not set, locks remain in P0;
 #
 # If L0 is a POSIX lock,
 #   + it is not inherited into P1
 #   + it is released after dup & close
 #
 # If L0 is a OFD lock,
 #   + it is inherited into P1
 #   + it is not released after dup & close
 #
 #  setlk routine:			 * getlk routine:
 #    start				 *   start
 #      |				 *     |
 #   open file				 *  open file
 #      |				 *     |
 #   init sem				 *     |
 #      |				 *     |
 #  wait init sem done			 * wait init sem done
 #      |				 *     |
 #    setlk L0                            *     |
 #      |				 *     |
 #      |---------clone()--------|	 *     |
 #      |                        |	 *     |
 #      |(child P1)   (parent P0)|	 *     | (P2)
 #      |                        |	 *     |
 #      |                   close fd	 *     |
 #      |                        |	 *     |
 #      |                 set sem0=0	 *  wait sem0==0
 #      |                        |	 *     |
 #      |                        |	 *   getlk L1
 #      |                        |	 *     |
 #   wait sem1==0                |    	 *  set sem1=0
 #      |                        |	 *     |
 #     exit                wait child 	 *     |
 #                               |	 *  check result
 #                           cleanup  	 *     |
 #                               |	 *     |
 #                             exit	 *    exit
 #
 # We can 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
 #
 . ./common/preamble
 _begin_fstest auto quick

 # Import common functions.
 . ./common/filter

 # Modify as appropriate.
 _require_test
 _require_ofd_locks

 # prepare a 4k testfile in TEST_DIR
 $XFS_IO_PROG -f -c "pwrite -S 0xFF 0 4096" \
 	$TEST_DIR/testfile >> $seqres.full 2>&1

 mk_sem()
 {
 	SEMID=$(ipcmk -S 2 | cut -d ":" -f 2 | tr -d '[:space:]')
 	if [ -z "$SEMID" ]; then
 		echo "ipcmk failed"
 		exit 1
 	fi
 	SEMKEY=$(ipcs -s | grep $SEMID | cut -d " " -f 1)
 	if [ -z "$SEMKEY" ]; then
 		echo "ipcs failed"
 		exit 1
 	fi
 }

 rm_sem()
 {
 	ipcrm -s $SEMID 2>/dev/null
 }

 do_test()
 {
 	local soptions
 	local goptions
 	# print options and getlk output for debug
 	echo $* >> $seqres.full 2>&1
 	mk_sem
 	soptions="$1 -K $SEMKEY"
 	goptions="$2 -K $SEMKEY"
 	# -s : do setlk
 	$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
 	# -g : do getlk
 	$here/src/t_ofd_locks $goptions $TEST_DIR/testfile | \
 		tee -a $seqres.full
 	wait $!
 	rm_sem

 	mk_sem
 	# add -F to clone with CLONE_FILES
 	soptions="$1 -F -K $SEMKEY"
 	goptions="$2 -K $SEMKEY"
 	# with -F, new locks are always file to place
 	$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
 	$here/src/t_ofd_locks $goptions $TEST_DIR/testfile | \
 		tee -a $seqres.full
 	wait $!
 	rm_sem

 	mk_sem
 	# add -d to dup and close
 	soptions="$1 -d -K $SEMKEY"
 	goptions="$2 -K $SEMKEY"
 	$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
 	$here/src/t_ofd_locks $goptions $TEST_DIR/testfile | \
 		tee -a $seqres.full
 	wait $!
 	rm_sem
 }

 # Always setlk at range [0,9], getlk at range [0,9] [5,24] or [20,29].
 # To open file RDONLY or RDWR should not break the locks.
 # POSIX locks should be released after closed fd, so it wont conflict
 # with other locks in tests

 # -P : operate posix lock
 # -w : operate on F_WRLCK
 # -r : operate on F_RDLCK
 # -R : open file RDONLY
 # -W : open file RDWR
 # -o : file offset where the lock starts
 # -l : lock length
 # -F : clone with CLONE_FILES in setlk
 # -d : dup and close in setlk

 # setlk wrlck [0,9], getlk wrlck [0,9], expect
 #    + wrlck when CLONE_FILES not set
 #    + unlck when CLONE_FILES set
 #    + wrlck when dup & close
 do_test "-s -w -o 0 -l 10 -W" "-g -w -o 0 -l 10 -W" "wrlck" "unlck" "wrlck"
 # setlk wrlck [0,9], getlk posix wrlck [5,24]
 do_test "-s -w -o 0 -l 10 -W" "-g -w -o 5 -l 20 -W -P" "wrlck" "unlck" "wrlck"
 # setlk wrlck [0,9], getlk wrlck [20,29]
 do_test "-s -w -o 0 -l 10 -W" "-g -w -o 20 -l 10 -W" "unlck" "unlck" "unlck"
 # setlk posix wrlck [0,9], getlk wrlck [5,24]
 do_test "-s -w -o 0 -l 10 -W -P" "-g -w -o 5 -l 20 -W" "wrlck" "unlck" "unlck"
 # setlk posix wrlck [0,9], getlk wrlck [20,29]
 do_test "-s -w -o 0 -l 10 -W -P" "-g -w -o 20 -l 10 -W" "unlck" "unlck" "unlck"

 # setlk wrlck [0,9], getlk rdlck [0,9]
 do_test "-s -w -o 0 -l 10 -W" "-g -r -o 0 -l 10 -W" "wrlck" "unlck" "wrlck"
 # setlk wrlck [0,9], getlk posix rdlck [5,24]
 do_test "-s -w -o 0 -l 10" "-g -r -o 5 -l 20 -P" "wrlck" "unlck" "wrlck"
 # setlk wrlck [0,9], getlk rdlck [20,29]
 do_test "-s -w -o 0 -l 10" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
 # setlk posix wrlck [0,9], getlk rdlck [5,24]
 do_test "-s -w -o 0 -l 10 -P" "-g -r -o 5 -l 20" "wrlck" "unlck" "unlck"
 # setlk posix wrlck [0,9], getlk rdlck [20,29]
 do_test "-s -w -o 0 -l 10 -P" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"

 # setlk rdlck [0,9], getlk wrlck [0,9], open RDONLY
 do_test "-s -r -o 0 -l 10 -R" "-g -w -o 0 -l 10 -R" "rdlck" "unlck" "rdlck"
 # setlk rdlck [0,9], getlk wrlck [5,24], open RDONLY
 do_test "-s -r -o 0 -l 10 -R" "-g -w -o 5 -l 20 -R -P" "rdlck" "unlck" "rdlck"
 # setlk posix rdlck [0,9], getlk wrlck [5,24], open RDONLY
 do_test "-s -r -o 0 -l 10 -R -P" "-g -w -o 5 -l 20 -R" "rdlck" "unlck" "unlck"

 # setlk rdlck [0,9], getlk wrlck [0,9]
 do_test "-s -r -o 0 -l 10" "-g -w -o 0 -l 10" "rdlck" "unlck" "rdlck"
 # setlk rdlck [0,9], getlk posix wrlck [5,24]
 do_test "-s -r -o 0 -l 10" "-g -w -o 5 -l 20 -P" "rdlck" "unlck" "rdlck"
 # setlk posix rdlck [0,9], getlk wrlck [5,24]
 do_test "-s -r -o 0 -l 10 -P" "-g -w -o 5 -l 20" "rdlck" "unlck" "unlck"

 # setlk rdlck [0,9], getlk wrlck [20,29], open RDONLY
 do_test "-s -r -o 0 -l 10 -R" "-g -w -o 20 -l 10 -R" "unlck" "unlck" "unlck"
 # setlk posix rdlck [0,9], getlk wrlck [20,29], open RDONLY
 do_test "-s -r -o 0 -l 10 -R -P" "-g -w -o 20 -l 10 -R" "unlck" "unlck" "unlck"
 # setlk rdlck [0,9], getlk wrlck [20,29]
 do_test "-s -r -o 0 -l 10" "-g -w -o 20 -l 10" "unlck" "unlck" "unlck"
 # setlk posix rdlck [0,9], getlk wrlck [20,29]
 do_test "-s -r -o 0 -l 10 -P" "-g -w -o 20 -l 10" "unlck" "unlck" "unlck"

 # setlk rdlck [0,9], getlk rdlck [0,9], open RDONLY
 do_test "-s -r -o 0 -l 10 -R" "-g -r -o 0 -l 10 -R" "unlck" "unlck" "unlck"
 # setlk rdlck [0,9], getlk posix rdlck [0,9], open RDONLY
 do_test "-s -r -o 0 -l 10 -R" "-g -r -o 0 -l 10 -R -P" "unlck" "unlck" "unlck"
 # setlk posix rdlck [0,9], getlk rdlck [0,9], open RDONLY
 do_test "-s -r -o 0 -l 10 -R -P" "-g -r -o 0 -l 10 -R" "unlck" "unlck" "unlck"
 # setlk rdlck [0,9], getlk rdlck [0,9]
 do_test "-s -r -o 0 -l 10" "-g -r -o 0 -l 10" "unlck" "unlck" "unlck"
 # setlk posix rdlck [0,9], getlk rdlck [0,9]
 do_test "-s -r -o 0 -l 10 -P" "-g -r -o 0 -l 10" "unlck" "unlck" "unlck"

 # setlk rdlck [0,9], getlk rdlck [20,29], open RDONLY
 do_test "-s -r -o 0 -l 10 -R" "-g -r -o 20 -l 10 -R" "unlck" "unlck" "unlck"
 # setlk rdlck [0,9], getlk posix rdlck [20,29], open RDONLY
 do_test "-s -r -o 0 -l 10 -R" "-g -r -o 20 -l 10 -R -P" "unlck" "unlck" "unlck"
 # setlk posix rdlck [0,9], getlk rdlck [20,29], open RDONLY
 do_test "-s -r -o 0 -l 10 -R -P" "-g -r -o 20 -l 10 -R" "unlck" "unlck" "unlck"
 # setlk rdlck [0,9], getlk rdlck [20,29]
 do_test "-s -r -o 0 -l 10" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
 # setlk posix rdlck [0,9], getlk rdlck [20,29]
 do_test "-s -r -o 0 -l 10 -P" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"

 # success, all done
 status=0
 exit
	#! /bin/bash
	# SPDX-License-Identifier: GPL-2.0
	# Copyright (c) 2018 Red Hat Inc. All Rights Reserved.
	#
	# FS QA Test 478
	#
	# Test OFD lock. fcntl F_OFD_SETLK to set lock, then F_OFD_GETLK
	# to verify we are being given correct advice by kernel.
	#
	# OFD lock combines POSIX lock and BSD flock:
	# + does not share between threads
	# + byte granularity
	# (both tested by LTP/fcntl3{4,6})
	# + only release automatically after all open fd closed
	#
	# This test target the third one and expand a little bit.
	#
	# 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
	#
	# + clone() a child P1 to close the fd then tell getlk to go,
	# parent P0 wait getlk done then close fd.
	# or
	# + dup() fd to a newfd then close newfd then tell getlk to go,
	# then wait getlk done then close 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.
	#
	# When testing with clone,
	# + CLONE_FILES set, close releases all locks;
	# + CLONE_FILES not set, locks remain in P0;
	#
	# If L0 is a POSIX lock,
	# + it is not inherited into P1
	# + it is released after dup & close
	#
	# If L0 is a OFD lock,
	# + it is inherited into P1
	# + it is not released after dup & close
	#
	# setlk routine: * getlk routine:
	# start * start
	# \| * \|
	# open file * open file
	# \| * \|
	# init sem * \|
	# \| * \|
	# wait init sem done * wait init sem done
	# \| * \|
	# setlk L0 * \|
	# \| * \|
	# \|---------clone()--------\| * \|
	# \| \| * \|
	# \|(child P1) (parent P0)\| * \| (P2)
	# \| \| * \|
	# \| close fd * \|
	# \| \| * \|
	# \| set sem0=0 * wait sem0==0
	# \| \| * \|
	# \| \| * getlk L1
	# \| \| * \|
	# wait sem1==0 \| * set sem1=0
	# \| \| * \|
	# exit wait child * \|
	# \| * check result
	# cleanup * \|
	# \| * \|
	# exit * exit
	#
	# We can 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
	#
	. ./common/preamble
	_begin_fstest auto quick

	# Import common functions.
	. ./common/filter

	# Modify as appropriate.
	_require_test
	_require_ofd_locks

	# prepare a 4k testfile in TEST_DIR
	$XFS_IO_PROG -f -c "pwrite -S 0xFF 0 4096" \
	$TEST_DIR/testfile >> $seqres.full 2>&1

	mk_sem()
	{
	SEMID=$(ipcmk -S 2 \| cut -d ":" -f 2 \| tr -d '[:space:]')
	if [ -z "$SEMID" ]; then
	echo "ipcmk failed"
	exit 1
	fi
	SEMKEY=$(ipcs -s \| grep $SEMID \| cut -d " " -f 1)
	if [ -z "$SEMKEY" ]; then
	echo "ipcs failed"
	exit 1
	fi
	}

	rm_sem()
	{
	ipcrm -s $SEMID 2>/dev/null
	}

	do_test()
	{
	local soptions
	local goptions
	# print options and getlk output for debug
	echo $* >> $seqres.full 2>&1
	mk_sem
	soptions="$1 -K $SEMKEY"
	goptions="$2 -K $SEMKEY"
	# -s : do setlk
	$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
	# -g : do getlk
	$here/src/t_ofd_locks $goptions $TEST_DIR/testfile \| \
	tee -a $seqres.full
	wait $!
	rm_sem

	mk_sem
	# add -F to clone with CLONE_FILES
	soptions="$1 -F -K $SEMKEY"
	goptions="$2 -K $SEMKEY"
	# with -F, new locks are always file to place
	$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
	$here/src/t_ofd_locks $goptions $TEST_DIR/testfile \| \
	tee -a $seqres.full
	wait $!
	rm_sem

	mk_sem
	# add -d to dup and close
	soptions="$1 -d -K $SEMKEY"
	goptions="$2 -K $SEMKEY"
	$here/src/t_ofd_locks $soptions $TEST_DIR/testfile &
	$here/src/t_ofd_locks $goptions $TEST_DIR/testfile \| \
	tee -a $seqres.full
	wait $!
	rm_sem
	}

	# Always setlk at range [0,9], getlk at range [0,9] [5,24] or [20,29].
	# To open file RDONLY or RDWR should not break the locks.
	# POSIX locks should be released after closed fd, so it wont conflict
	# with other locks in tests

	# -P : operate posix lock
	# -w : operate on F_WRLCK
	# -r : operate on F_RDLCK
	# -R : open file RDONLY
	# -W : open file RDWR
	# -o : file offset where the lock starts
	# -l : lock length
	# -F : clone with CLONE_FILES in setlk
	# -d : dup and close in setlk

	# setlk wrlck [0,9], getlk wrlck [0,9], expect
	# + wrlck when CLONE_FILES not set
	# + unlck when CLONE_FILES set
	# + wrlck when dup & close
	do_test "-s -w -o 0 -l 10 -W" "-g -w -o 0 -l 10 -W" "wrlck" "unlck" "wrlck"
	# setlk wrlck [0,9], getlk posix wrlck [5,24]
	do_test "-s -w -o 0 -l 10 -W" "-g -w -o 5 -l 20 -W -P" "wrlck" "unlck" "wrlck"
	# setlk wrlck [0,9], getlk wrlck [20,29]
	do_test "-s -w -o 0 -l 10 -W" "-g -w -o 20 -l 10 -W" "unlck" "unlck" "unlck"
	# setlk posix wrlck [0,9], getlk wrlck [5,24]
	do_test "-s -w -o 0 -l 10 -W -P" "-g -w -o 5 -l 20 -W" "wrlck" "unlck" "unlck"
	# setlk posix wrlck [0,9], getlk wrlck [20,29]
	do_test "-s -w -o 0 -l 10 -W -P" "-g -w -o 20 -l 10 -W" "unlck" "unlck" "unlck"

	# setlk wrlck [0,9], getlk rdlck [0,9]
	do_test "-s -w -o 0 -l 10 -W" "-g -r -o 0 -l 10 -W" "wrlck" "unlck" "wrlck"
	# setlk wrlck [0,9], getlk posix rdlck [5,24]
	do_test "-s -w -o 0 -l 10" "-g -r -o 5 -l 20 -P" "wrlck" "unlck" "wrlck"
	# setlk wrlck [0,9], getlk rdlck [20,29]
	do_test "-s -w -o 0 -l 10" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
	# setlk posix wrlck [0,9], getlk rdlck [5,24]
	do_test "-s -w -o 0 -l 10 -P" "-g -r -o 5 -l 20" "wrlck" "unlck" "unlck"
	# setlk posix wrlck [0,9], getlk rdlck [20,29]
	do_test "-s -w -o 0 -l 10 -P" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"

	# setlk rdlck [0,9], getlk wrlck [0,9], open RDONLY
	do_test "-s -r -o 0 -l 10 -R" "-g -w -o 0 -l 10 -R" "rdlck" "unlck" "rdlck"
	# setlk rdlck [0,9], getlk wrlck [5,24], open RDONLY
	do_test "-s -r -o 0 -l 10 -R" "-g -w -o 5 -l 20 -R -P" "rdlck" "unlck" "rdlck"
	# setlk posix rdlck [0,9], getlk wrlck [5,24], open RDONLY
	do_test "-s -r -o 0 -l 10 -R -P" "-g -w -o 5 -l 20 -R" "rdlck" "unlck" "unlck"

	# setlk rdlck [0,9], getlk wrlck [0,9]
	do_test "-s -r -o 0 -l 10" "-g -w -o 0 -l 10" "rdlck" "unlck" "rdlck"
	# setlk rdlck [0,9], getlk posix wrlck [5,24]
	do_test "-s -r -o 0 -l 10" "-g -w -o 5 -l 20 -P" "rdlck" "unlck" "rdlck"
	# setlk posix rdlck [0,9], getlk wrlck [5,24]
	do_test "-s -r -o 0 -l 10 -P" "-g -w -o 5 -l 20" "rdlck" "unlck" "unlck"

	# setlk rdlck [0,9], getlk wrlck [20,29], open RDONLY
	do_test "-s -r -o 0 -l 10 -R" "-g -w -o 20 -l 10 -R" "unlck" "unlck" "unlck"
	# setlk posix rdlck [0,9], getlk wrlck [20,29], open RDONLY
	do_test "-s -r -o 0 -l 10 -R -P" "-g -w -o 20 -l 10 -R" "unlck" "unlck" "unlck"
	# setlk rdlck [0,9], getlk wrlck [20,29]
	do_test "-s -r -o 0 -l 10" "-g -w -o 20 -l 10" "unlck" "unlck" "unlck"
	# setlk posix rdlck [0,9], getlk wrlck [20,29]
	do_test "-s -r -o 0 -l 10 -P" "-g -w -o 20 -l 10" "unlck" "unlck" "unlck"

	# setlk rdlck [0,9], getlk rdlck [0,9], open RDONLY
	do_test "-s -r -o 0 -l 10 -R" "-g -r -o 0 -l 10 -R" "unlck" "unlck" "unlck"
	# setlk rdlck [0,9], getlk posix rdlck [0,9], open RDONLY
	do_test "-s -r -o 0 -l 10 -R" "-g -r -o 0 -l 10 -R -P" "unlck" "unlck" "unlck"
	# setlk posix rdlck [0,9], getlk rdlck [0,9], open RDONLY
	do_test "-s -r -o 0 -l 10 -R -P" "-g -r -o 0 -l 10 -R" "unlck" "unlck" "unlck"
	# setlk rdlck [0,9], getlk rdlck [0,9]
	do_test "-s -r -o 0 -l 10" "-g -r -o 0 -l 10" "unlck" "unlck" "unlck"
	# setlk posix rdlck [0,9], getlk rdlck [0,9]
	do_test "-s -r -o 0 -l 10 -P" "-g -r -o 0 -l 10" "unlck" "unlck" "unlck"

	# setlk rdlck [0,9], getlk rdlck [20,29], open RDONLY
	do_test "-s -r -o 0 -l 10 -R" "-g -r -o 20 -l 10 -R" "unlck" "unlck" "unlck"
	# setlk rdlck [0,9], getlk posix rdlck [20,29], open RDONLY
	do_test "-s -r -o 0 -l 10 -R" "-g -r -o 20 -l 10 -R -P" "unlck" "unlck" "unlck"
	# setlk posix rdlck [0,9], getlk rdlck [20,29], open RDONLY
	do_test "-s -r -o 0 -l 10 -R -P" "-g -r -o 20 -l 10 -R" "unlck" "unlck" "unlck"
	# setlk rdlck [0,9], getlk rdlck [20,29]
	do_test "-s -r -o 0 -l 10" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"
	# setlk posix rdlck [0,9], getlk rdlck [20,29]
	do_test "-s -r -o 0 -l 10 -P" "-g -r -o 20 -l 10" "unlck" "unlck" "unlck"

	# success, all done
	status=0
	exit