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+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022 Meta, Inc. All Rights Reserved.
+#
+# FS QA Test 277
+#
+# Test sendstreams involving fs-verity enabled files.
+#
+. ./common/preamble
+_begin_fstest auto quick verity send
+
+# Override the default cleanup function.
+_cleanup()
+{
+ cd /
+ _restore_fsverity_signatures
+ rm -r -f $tmp.*
+}
+
+# Import common functions.
+. ./common/filter
+. ./common/verity
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs btrfs
+_require_scratch_verity
+_require_fsverity_builtin_signatures
+_require_command "$SETCAP_PROG" setcap
+_require_command "$GETCAP_PROG" getcap
+
+subv=$SCRATCH_MNT/subv
+fsv_file=$subv/file.fsv
+keyfile=$tmp.key.pem
+certfile=$tmp.cert.pem
+certfileder=$tmp.cert.der
+sigfile=$tmp.sig
+stream=$tmp.fsv.ss
+
+_test_send_verity() {
+ local sig=$1
+ local salt=$2
+ local extra_args=""
+
+ _scratch_mkfs >> $seqres.full
+ _scratch_mount
+ echo -e "\nverity send/recv test: sig: $sig salt: $salt"
+ _disable_fsverity_signatures
+
+ echo "create subvolume"
+ $BTRFS_UTIL_PROG subvolume create $subv >> $seqres.full
+ echo "create file"
+ $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 12288" $fsv_file
+ if $salt; then
+ extra_args+=" --salt=deadbeef"
+ fi
+ if $sig; then
+ echo "generate keys and cert"
+ _fsv_generate_cert $keyfile $certfile $certfileder
+ echo "clear keyring"
+ _fsv_clear_keyring
+ echo "load cert into keyring"
+ _fsv_load_cert $certfileder
+ echo "require signatures"
+ _enable_fsverity_signatures
+ echo "sign file digest"
+ _fsv_sign $fsv_file $sigfile --key=$keyfile --cert=$certfile \
+ $extra_args | _filter_scratch >> $seqres.full
+ extra_args+=" --signature=$sigfile"
+ fi
+ echo "enable verity"
+ _fsv_enable $fsv_file $extra_args
+ cat $fsv_file > $tmp.file-before
+ _fsv_measure $fsv_file > $tmp.digest-before
+
+ # ensure send plays nice with other properties that are set when
+ # finishing the file during send, like chmod and capabilities.
+ echo "modify other properties"
+ chmod a+x $fsv_file
+ $SETCAP_PROG "cap_sys_ptrace+ep cap_sys_nice+ep" $fsv_file
+ $GETCAP_PROG $fsv_file > $tmp.cap-before
+
+ echo "set subvolume read only"
+ $BTRFS_UTIL_PROG property set $subv ro true
+ echo "send subvolume"
+ $BTRFS_UTIL_PROG send $subv -f $stream -q >> $seqres.full
+
+ echo "blow away fs"
+ _scratch_unmount
+ _scratch_mkfs >> $seqres.full
+ _scratch_mount
+
+ echo "receive sendstream"
+ $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $stream -q >> $seqres.full
+
+ echo "check received subvolume..."
+ _scratch_cycle_mount
+ _fsv_measure $fsv_file > $tmp.digest-after
+ $GETCAP_PROG $fsv_file > $tmp.cap-after
+ diff $tmp.file-before $fsv_file
+ diff $tmp.digest-before $tmp.digest-after
+ diff $tmp.cap-before $tmp.cap-after
+ _scratch_unmount
+ echo OK
+}
+
+_test_send_verity false false # no sig; no salt
+_test_send_verity false true # no sig; salt
+_test_send_verity true false # sig; no salt
+_test_send_verity true true # sig; salt
+
+# success, all done
+status=0
+exit
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+QA output created by 277
+
+verity send/recv test: sig: false salt: false
+create subvolume
+create file
+enable verity
+modify other properties
+set subvolume read only
+send subvolume
+blow away fs
+receive sendstream
+check received subvolume...
+OK
+
+verity send/recv test: sig: false salt: true
+create subvolume
+create file
+enable verity
+modify other properties
+set subvolume read only
+send subvolume
+blow away fs
+receive sendstream
+check received subvolume...
+OK
+
+verity send/recv test: sig: true salt: false
+create subvolume
+create file
+generate keys and cert
+clear keyring
+load cert into keyring
+require signatures
+sign file digest
+enable verity
+modify other properties
+set subvolume read only
+send subvolume
+blow away fs
+receive sendstream
+check received subvolume...
+OK
+
+verity send/recv test: sig: true salt: true
+create subvolume
+create file
+generate keys and cert
+clear keyring
+load cert into keyring
+require signatures
+sign file digest
+enable verity
+modify other properties
+set subvolume read only
+send subvolume
+blow away fs
+receive sendstream
+check received subvolume...
+OK
Test btrfs send/recv support for fs-verity. Includes tests for signatures, salts, and interaction with chmod/caps. The last of those is to ensure the various features that go in during inode_finalize interact properly. This depends on the kernel patch adding support for send: btrfs: send: add support for fs-verity And the btrfs-progs patch adding support for recv: btrfs-progs: receive: add support for fs-verity Signed-off-by: Boris Burkov <boris@bur.io> --- Changes for v4: - btrfs subv -> btrfs subvolume Changes for v3: - commit a few things from v2 that I left unstaged (277 in output, true/false) Changes for v2: - btrfs/271 -> btrfs/277 - YOUR NAME HERE -> Meta - change 0/1 to false/true - change drop caches to cycle mount - get rid of unneeded _require_test - compare file contents tests/btrfs/277 | 115 ++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/277.out | 59 +++++++++++++++++++++++ 2 files changed, 174 insertions(+) create mode 100755 tests/btrfs/277 create mode 100644 tests/btrfs/277.out