#!/bin/sh
# $FreeBSD$

desc="chmod changes permission"

dir=`dirname $0`
. ${dir}/../misc.sh

if supported lchmod; then
	echo "1..77"
else
	echo "1..58"
fi

n0=`namegen`
n1=`namegen`
n2=`namegen`

expect 0 mkdir ${n2} 0755
cdir=`pwd`
cd ${n2}

expect 0 create ${n0} 0644
expect 0644 stat ${n0} mode
expect 0 chmod ${n0} 0111
expect 0111 stat ${n0} mode
expect 0 unlink ${n0}

expect 0 mkdir ${n0} 0755
expect 0755 stat ${n0} mode
expect 0 chmod ${n0} 0753
expect 0753 stat ${n0} mode
expect 0 rmdir ${n0}

expect 0 mkfifo ${n0} 0644
expect 0644 stat ${n0} mode
expect 0 chmod ${n0} 0310
expect 0310 stat ${n0} mode
expect 0 unlink ${n0}

expect 0 create ${n0} 0644
expect 0 symlink ${n0} ${n1}
expect 0644 stat ${n1} mode
expect 0 chmod ${n1} 0321
expect 0321 stat ${n1} mode
expect 0321 lstat ${n0} mode
expect 0 unlink ${n0}
expect 0 unlink ${n1}

if supported lchmod; then
	expect 0 create ${n0} 0644
	expect 0 symlink ${n0} ${n1}
	expect 0644 stat ${n1} mode
	expect 0 lchmod ${n1} 0321
	expect 0321 lstat ${n1} mode
	expect 0 lchmod ${n1} 0531
	expect 0531 lstat ${n1} mode
	expect 0644 stat ${n0} mode
	expect 0644 stat ${n1} mode
	expect 0 unlink ${n0}
	expect 0 unlink ${n1}
fi

# successful chmod(2) updates ctime.
expect 0 create ${n0} 0644
ctime1=`${fstest} stat ${n0} ctime`
sleep 1
expect 0 chmod ${n0} 0111
ctime2=`${fstest} stat ${n0} ctime`
test_check $ctime1 -lt $ctime2
expect 0 unlink ${n0}

expect 0 mkdir ${n0} 0755
ctime1=`${fstest} stat ${n0} ctime`
sleep 1
expect 0 chmod ${n0} 0753
ctime2=`${fstest} stat ${n0} ctime`
test_check $ctime1 -lt $ctime2
expect 0 rmdir ${n0}

expect 0 mkfifo ${n0} 0644
ctime1=`${fstest} stat ${n0} ctime`
sleep 1
expect 0 chmod ${n0} 0310
ctime2=`${fstest} stat ${n0} ctime`
test_check $ctime1 -lt $ctime2
expect 0 unlink ${n0}

if supported lchmod; then
	expect 0 symlink ${n1} ${n0}
	ctime1=`${fstest} lstat ${n0} ctime`
	sleep 1
	expect 0 lchmod ${n0} 0321
	ctime2=`${fstest} lstat ${n0} ctime`
	test_check $ctime1 -lt $ctime2
	expect 0 unlink ${n0}
fi

# unsuccessful chmod(2) does not update ctime.
expect 0 create ${n0} 0644
ctime1=`${fstest} stat ${n0} ctime`
sleep 1
expect EPERM -u 65534 chmod ${n0} 0111
ctime2=`${fstest} stat ${n0} ctime`
test_check $ctime1 -eq $ctime2
expect 0 unlink ${n0}

expect 0 mkdir ${n0} 0755
ctime1=`${fstest} stat ${n0} ctime`
sleep 1
expect EPERM -u 65534 chmod ${n0} 0753
ctime2=`${fstest} stat ${n0} ctime`
test_check $ctime1 -eq $ctime2
expect 0 rmdir ${n0}

expect 0 mkfifo ${n0} 0644
ctime1=`${fstest} stat ${n0} ctime`
sleep 1
expect EPERM -u 65534 chmod ${n0} 0310
ctime2=`${fstest} stat ${n0} ctime`
test_check $ctime1 -eq $ctime2
expect 0 unlink ${n0}

if supported lchmod; then
	expect 0 symlink ${n1} ${n0}
	ctime1=`${fstest} lstat ${n0} ctime`
	sleep 1
	expect EPERM -u 65534 lchmod ${n0} 0321
	ctime2=`${fstest} lstat ${n0} ctime`
	test_check $ctime1 -eq $ctime2
	expect 0 unlink ${n0}
fi

# POSIX: If the calling process does not have appropriate privileges, and if
# the group ID of the file does not match the effective group ID or one of the
# supplementary group IDs and if the file is a regular file, bit S_ISGID
# (set-group-ID on execution) in the file's mode shall be cleared upon
# successful return from chmod().

expect 0 create ${n0} 0755
expect 0 chown ${n0} 65535 65535
expect 0 -u 65535 -g 65535 chmod ${n0} 02755
expect 02755 stat ${n0} mode
expect 0 -u 65535 -g 65535 chmod ${n0} 0755
expect 0755 stat ${n0} mode

# Unfortunately FreeBSD doesn't clear set-gid bit, but returns EPERM instead.
case "${os}" in
FreeBSD)
	expect EPERM -u 65535 -g 65534 chmod ${n0} 02755
	expect 0755 stat ${n0} mode
	;;
*)
	expect 0 -u 65535 -g 65534 chmod ${n0} 02755
	expect 0755 stat ${n0} mode
	;;
esac
expect 0 unlink ${n0}

cd ${cdir}
expect 0 rmdir ${n2}