prevent.sh

# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2024 Axcient
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# 2. Redistributions in binary form must reproduce the above copyright
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. $(atf_get_srcdir)/ctl.subr

# TODO
# * multiple initiators may block removal

# Not Tested
# * persistent removal (not implemented in CTL)

atf_test_case allow cleanup
allow_head()
{
	atf_set "descr" "SCSI PREVENT ALLOW MEDIUM REMOVAL will prevent a CD from being ejected"
	atf_set "require.user" "root"
	atf_set "require.progs" "sg_prevent sg_start ctladm"
}
allow_body()
{
	# -t 5 for CD/DVD device type
	create_ramdisk -t 5

	atf_check sg_prevent --prevent 1 /dev/$dev

	# Now sg_start --eject should fail
	atf_check -s exit:5 -e match:"Illegal request" sg_start --eject /dev/$dev

	atf_check sg_prevent --allow /dev/$dev

	# Now sg_start --eject should work again
	atf_check -s exit:0 sg_start --eject /dev/$dev
}
allow_cleanup()
{
	cleanup
}

atf_test_case allow_idempotent cleanup
allow_idempotent_head()
{
	atf_set "descr" "SCSI PREVENT ALLOW MEDIUM REMOVAL is idempotent when run from the same initiator"
	atf_set "require.user" "root"
	atf_set "require.progs" "sg_prevent sg_start ctladm"
}
allow_idempotent_body()
{
	# -t 5 for CD/DVD device type
	create_ramdisk -t 5

	atf_check sg_prevent --allow /dev/$dev
	atf_check sg_prevent --allow /dev/$dev
	atf_check sg_prevent --prevent 1 /dev/$dev

	# Even though we ran --allow twice, a single --prevent command should
	# suffice to prevent ejecting.  Multiple ALLOW/PREVENT commands from
	# the same initiator don't have any additional effect.
	atf_check -s exit:5 -e match:"Illegal request" sg_start --eject /dev/$dev
}
allow_idempotent_cleanup()
{
	cleanup
}

atf_test_case nonremovable cleanup
nonremovable_head()
{
	atf_set "descr" "SCSI PREVENT ALLOW MEDIUM REMOVAL may not be used on non-removable media"
	atf_set "require.user" "root"
	atf_set "require.progs" "sg_prevent ctladm"
}
nonremovable_body()
{
	# Create a HDD, not a CD, device
	create_ramdisk -t 0

	atf_check -s exit:9 -e match:"Invalid opcode" sg_prevent /dev/$dev
}
nonremovable_cleanup()
{
	cleanup
}

atf_test_case prevent cleanup
prevent_head()
{
	atf_set "descr" "SCSI PREVENT ALLOW MEDIUM REMOVAL will prevent a CD from being ejected"
	atf_set "require.user" "root"
	atf_set "require.progs" "sg_prevent sg_start ctladm"
}
prevent_body()
{
	# -t 5 for CD/DVD device type
	create_ramdisk -t 5

	atf_check sg_prevent --prevent 1 /dev/$dev

	# Now sg_start --eject should fail
	atf_check -s exit:5 -e match:"Illegal request" sg_start --eject /dev/$dev
}
prevent_cleanup()
{
	cleanup
}

atf_test_case prevent_idempotent cleanup
prevent_idempotent_head()
{
	atf_set "descr" "SCSI PREVENT ALLOW MEDIUM REMOVAL is idempotent when run from the same initiator"
	atf_set "require.user" "root"
	atf_set "require.progs" "sg_prevent sg_start ctladm"
}
prevent_idempotent_body()
{
	# -t 5 for CD/DVD device type
	create_ramdisk -t 5

	atf_check sg_prevent --prevent 1 /dev/$dev
	atf_check sg_prevent --prevent 1 /dev/$dev
	atf_check sg_prevent --allow /dev/$dev

	# Even though we ran prevent idempotent and allow only once, eject
	# should be allowed.  Multiple PREVENT commands from the same initiator
	# don't have any additional effect.
	atf_check sg_start --eject /dev/$dev
}
prevent_idempotent_cleanup()
{
	cleanup
}

atf_init_test_cases()
{
	atf_add_test_case allow
	atf_add_test_case allow_idempotent
	atf_add_test_case nonremovable
	atf_add_test_case prevent
	atf_add_test_case prevent_idempotent
}