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#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#

#
# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

#
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib

# a function that takes a file, then creates and verifies
# an xattr on that file. The xattr_contents is the file
# that should appear in the xattr namespace.
function create_xattr { # filename xattr_name xattr_contents
	typeset FILE=$1
	typeset XATTR_NAME=$2
	typeset XATTR_CONTENTS=$3

	# read any empty xattr on that file
	log_must runat $FILE ls
	# create the xattr
	log_must runat $FILE cp $XATTR_CONTENTS $XATTR_NAME

	verify_xattr $FILE $XATTR_NAME $XATTR_CONTENTS
}

# a function that compares the a single xattr between two files
# and checks to see if their contents are identical
function compare_xattrs { # filename1 filename2 xattr_name
	typeset FILE1=$1
	typeset FILE2=$2
	typeset XATTR_NAME=$3

	runat $FILE1 cat $XATTR_NAME > /tmp/file1.$$
	runat $FILE2 cat $XATTR_NAME > /tmp/file2.$$

	log_must diff /tmp/file1.$$ /tmp/file2.$$
	log_must rm /tmp/file1.$$ /tmp/file2.$$
}

function verify_xattr { # filename xattr_name xattr_contents
	typeset FILE=$1
	typeset XATTR_NAME=$2
	typeset XATTR_CONTENTS=$3

	# read the xattr, writing it to a temp file
	log_must eval "runat $FILE cat $XATTR_NAME > /tmp/$XATTR_NAME.$$ 2>&1"
	log_must diff $XATTR_CONTENTS /tmp/$XATTR_NAME.$$
	rm /tmp/$XATTR_NAME.$$
}

function delete_xattr { # filename xattr_name
        typeset FILE=$1
        typeset XATTR_NAME=$2

        # delete the xattr
        log_must runat $FILE rm $XATTR_NAME
        log_mustnot eval "runat $FILE ls $XATTR_NAME > /dev/null 2>&1"
}

# not sure about this : really this should be testing write/append
function verify_write_xattr { # filename xattr_name
        typeset FILE=$1
        typeset XATTR_NAME=$2

        log_must eval "runat $FILE dd if=/etc/passwd of=$XATTR_NAME"
        log_must eval "runat $FILE cat $XATTR_NAME > /tmp/$XATTR_NAME.$$ 2>&1"
        log_must dd if=/etc/passwd of=/tmp/passwd_dd.$$
        log_must diff /tmp/passwd_dd.$$ /tmp/$XATTR_NAME.$$
        log_must rm /tmp/passwd_dd.$$ /tmp/$XATTR_NAME.$$
}

# this function is to create the expected output
function create_expected_output  { # expected_output_file  contents_of_the_output
   typeset FILE=$1
   shift
   if [[ -f $FILE ]]; then
      log_must rm $FILE
   fi

   for line in $@
   do
      log_must eval "echo $line >> $FILE"
   done
 }