functional/xattr/xattr_007_neg.ksh

#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
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# You may not use this file except in compliance with the License.
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# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
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#
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/xattr/xattr_common.kshlib

#
# DESCRIPTION:
# Creating and writing xattrs on files in snapshot directories fails. Also,
# we shouldn't be able to list the xattrs of files in snapshots who didn't have
# xattrs when the snapshot was created (the xattr namespace wouldn't have been
# created yet, and snapshots are read-only) See fsattr(5) for more details.
#
# STRATEGY:
#   1. Create a file and add an xattr to it.
#   2. Create another file, but don't add an xattr to it.
#       3. Snapshot the filesystem
#   4. Verify we're unable to alter the xattr on the first file
#   5. Verify we're unable to list the xattrs on the second file
#

function cleanup {
    log_must zfs destroy $TESTPOOL/$TESTFS@snap
    log_must rm $TESTDIR/myfile2.$$
    log_must rm $TESTDIR/myfile.$$
    log_must rm /tmp/output.$$
    [[ -e /tmp/expected_output.$$ ]]  && log_must rm  \
    /tmp/expected_output.$$

}

log_assert "create/write xattr on a snapshot fails"
log_onexit cleanup

# create a file, and an xattr on it
log_must touch $TESTDIR/myfile.$$
create_xattr $TESTDIR/myfile.$$ passwd /etc/passwd

# create another file that doesn't have an xattr
log_must touch $TESTDIR/myfile2.$$

# snapshot the filesystem
log_must zfs snapshot $TESTPOOL/$TESTFS@snap

# we shouldn't be able to alter the first file's xattr
log_mustnot eval " runat $TESTDIR/.zfs/snapshot/snap/myfile.$$ \
    cp /etc/passwd .  >/tmp/output.$$  2>&1"
log_must grep  -i  Read-only  /tmp/output.$$

log_must eval "runat $TESTDIR/.zfs/snapshot/snap/myfile2.$$  \
    ls >/tmp/output.$$  2>&1"
create_expected_output  /tmp/expected_output.$$ SUNWattr_ro SUNWattr_rw
log_must diff /tmp/output.$$ /tmp/expected_output.$$

log_pass "create/write xattr on a snapshot fails"