zfs/tests/zfs-tests/tests/functional/suid/suid_write_to_suid.ksh

#! /bin/ksh -p
#
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#
# Copyright (c) 2019 by Tomohiro Kusumi. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib

#
# DESCRIPTION:
# Verify write(2) to SUID file by non-owner.
# Also see https://github.com/pjd/pjdfstest/blob/master/tests/chmod/12.t
#
# STRATEGY:
# 1. creat(2) a file with SUID.
# 2. write(2) to the file with uid=65534.
# 3. stat(2) the file and verify .st_mode value.
#

verify_runnable "both"

function cleanup
{
	rm -f $TESTDIR/$TESTFILE0
}

log_onexit cleanup
log_note "Verify write(2) to SUID file by non-owner"

log_must $STF_SUITE/tests/functional/suid/suid_write_to_file "SUID" "PRECRASH"

log_pass "Verify write(2) to SUID file by non-owner passed"