2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright 2018 Google LLC
5 # FS QA Test generic/572
7 # This is a basic fs-verity test which verifies:
9 # - conditions for enabling verity
10 # - verity files have correct contents and size
11 # - can't change contents of verity files, but can change metadata
12 # - can retrieve a verity file's measurement via FS_IOC_MEASURE_VERITY
15 seqres=$RESULT_DIR/$seq
16 echo "QA output created by $seq"
20 status=1 # failure is the default!
21 trap "_cleanup; exit \$status" 0 1 2 3 15
29 # get standard environment, filters and checks
34 # remove previous $seqres.full before test
37 # real QA test starts here
40 _require_scratch_verity
42 _scratch_mkfs_verity &>> $seqres.full
44 fsv_orig_file=$SCRATCH_MNT/file
45 fsv_file=$SCRATCH_MNT/file.fsv
47 verify_data_readable()
51 md5sum $file > /dev/null
54 verify_data_unreadable()
58 # try both reading just the first data block, and reading until EOF
59 head -c $FSV_BLOCK_SIZE $file 2>&1 >/dev/null | _filter_scratch
60 md5sum $file |& _filter_scratch
63 _fsv_scratch_begin_subtest "Enabling verity on file with verity already enabled fails with EEXIST"
64 _fsv_create_enable_file $fsv_file
66 _fsv_enable $fsv_file |& _filter_scratch
68 _fsv_scratch_begin_subtest "Enabling verity with invalid hash algorithm fails with EINVAL"
69 _fsv_create_enable_file $fsv_file --hash-alg=257 |& _filter_scratch
70 verify_data_readable $fsv_file
72 _fsv_scratch_begin_subtest "Enabling verity with invalid block size fails with EINVAL"
73 _fsv_create_enable_file $fsv_file --block-size=1 |& _filter_scratch
74 verify_data_readable $fsv_file
76 _fsv_scratch_begin_subtest "Enabling verity on directory fails with EISDIR"
77 mkdir $SCRATCH_MNT/dir
78 _fsv_enable $SCRATCH_MNT/dir |& _filter_scratch
80 _fsv_scratch_begin_subtest "Enabling verity with too-long salt fails with EMSGSIZE"
81 _fsv_create_enable_file $fsv_file --salt=$(perl -e 'print "A" x 1000') |& _filter_scratch
82 verify_data_readable $fsv_file
84 _fsv_scratch_begin_subtest "Enabling verity on file on read-only filesystem fails with EROFS"
87 _fsv_enable $fsv_file |& _filter_scratch
90 _fsv_scratch_begin_subtest "Enabling verity on file open for writing fails with ETXTBSY"
93 _fsv_enable $fsv_file |& _filter_scratch
95 verify_data_readable $fsv_file
97 _fsv_scratch_begin_subtest "Enabling verity can be interrupted"
98 dd if=/dev/zero of=$fsv_file bs=1 count=0 seek=$((1 << 34)) status=none
99 start_time=$(date +%s)
100 $FSVERITY_PROG enable $fsv_file &
104 elapsed=$(( $(date +%s) - start_time ))
105 if (( elapsed > 5 )); then
106 echo "Failed to interrupt FS_IOC_ENABLE_VERITY ($elapsed seconds elapsed)"
109 _fsv_scratch_begin_subtest "Enabling verity on file with verity already being enabled fails with EBUSY"
110 dd if=/dev/zero of=$fsv_file bs=1 count=0 seek=$((1 << 34)) status=none
111 start_time=$(date +%s)
112 $FSVERITY_PROG enable $fsv_file &
114 _fsv_enable $fsv_file |& _filter_scratch
118 _fsv_scratch_begin_subtest "verity file can't be opened for writing"
119 _fsv_create_enable_file $fsv_file >> $seqres.full
121 $XFS_IO_PROG -r $fsv_file -c ''
122 echo "* xfs_io writing, should be O_RDWR"
123 $XFS_IO_PROG $fsv_file -c '' |& _filter_scratch
124 echo "* bash >>, should be O_APPEND"
125 bash -c "echo >> $fsv_file" |& _filter_scratch
126 echo "* bash >, should be O_WRONLY|O_CREAT|O_TRUNC"
127 bash -c "echo > $fsv_file" |& _filter_scratch
129 _fsv_scratch_begin_subtest "verity file can be read"
130 _fsv_create_enable_file $fsv_file >> $seqres.full
131 verify_data_readable $fsv_file
133 _fsv_scratch_begin_subtest "verity file can be measured"
134 _fsv_create_enable_file $fsv_file >> $seqres.full
135 _fsv_measure $fsv_file
137 _fsv_scratch_begin_subtest "verity file can be renamed"
138 _fsv_create_enable_file $fsv_file
139 mv $fsv_file $fsv_file.newname
141 _fsv_scratch_begin_subtest "verity file can be unlinked"
142 _fsv_create_enable_file $fsv_file
145 _fsv_scratch_begin_subtest "verity file can be linked to"
146 _fsv_create_enable_file $fsv_file
147 ln $fsv_file $fsv_file.newname
149 _fsv_scratch_begin_subtest "verity file can be chmodded"
150 _fsv_create_enable_file $fsv_file
154 _fsv_scratch_begin_subtest "verity file can be chowned"
155 _fsv_create_enable_file $fsv_file
159 _fsv_scratch_begin_subtest "verity file has correct contents and size"
160 head -c 100000 /dev/urandom > $fsv_orig_file
161 cp $fsv_orig_file $fsv_file
162 _fsv_enable $fsv_file >> $seqres.full
163 cmp $fsv_file $fsv_orig_file
166 cmp $fsv_file $fsv_orig_file
169 _fsv_scratch_begin_subtest "Trying to measure non-verity file fails with ENODATA"
171 _fsv_measure $fsv_file |& _filter_scratch
172 verify_data_readable $fsv_file
174 # Test files <= 1 block in size. These are a bit of a special case since there
175 # are no hash blocks; the root hash is calculated directly over the data block.
176 for size in 1 $((FSV_BLOCK_SIZE - 1)) $FSV_BLOCK_SIZE; do
177 _fsv_scratch_begin_subtest "verity on $size-byte file"
178 head -c $size /dev/urandom > $fsv_orig_file
179 cp $fsv_orig_file $fsv_file
180 _fsv_enable $fsv_file
181 cmp $fsv_orig_file $fsv_file && echo "Files matched"
185 _fsv_scratch_begin_subtest "verity on 100M file (multiple levels in hash tree)"
186 head -c 100000000 /dev/urandom > $fsv_orig_file
187 cp $fsv_orig_file $fsv_file
188 _fsv_enable $fsv_file
189 cmp $fsv_orig_file $fsv_file && echo "Files matched"
191 _fsv_scratch_begin_subtest "verity on sparse file"
192 dd if=/dev/zero of=$fsv_orig_file bs=1 count=1 seek=1000000 status=none
193 cp $fsv_orig_file $fsv_file
194 _fsv_enable $fsv_file
195 cmp $fsv_orig_file $fsv_file && echo "Files matched"