| Message ID | 6e3759825cd0134186b0d6eb8825a4ba3ed62b70.1617908086.git.boris@bur.io (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | tests for btrfs fsverity | expand |
On Thu, Apr 08, 2021 at 11:57:49AM -0700, Boris Burkov wrote: > +get_ino() { > + file=$1 > + ls -i $file | awk '{print $1}' > +} Please use 'local' when declaring variables in shell functions. > +# corrupt the data portion of an inline extent > +corrupt_inline() { > + f=$SCRATCH_MNT/inl > + head -c 42 /dev/zero | tr '\0' X > $f > + ino=$(get_ino $f) > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount Isn't the sync unnecessary because the filesystem is unmounted anyway? Likewise for all the other corrupt_* functions. Otherwise, at a high level this test looks good -- thanks for writing it! - Eric
On Thu, Apr 08, 2021 at 11:57:49AM -0700, Boris Burkov wrote: > There are some btrfs specific fsverity scenarios that don't map > neatly onto the tests in generic/574 like holes, inline extents, > and preallocated extents. Cover those in a btrfs specific test. > > This test relies on the btrfs implementation of fsverity in: > <kernel patches> > and it relies on btrfs-corrupt-block for corruption, with the patches: > <corrupt block patches> I assume you'll fill in the patch lists when they're merged. > > Signed-off-by: Boris Burkov <boris@bur.io> > --- > common/config | 1 + > common/verity | 7 ++ > tests/btrfs/290 | 190 ++++++++++++++++++++++++++++++++++++++++++++ > tests/btrfs/290.out | 17 ++++ > tests/btrfs/group | 1 + > 5 files changed, 216 insertions(+) > create mode 100755 tests/btrfs/290 > create mode 100644 tests/btrfs/290.out > > diff --git a/common/config b/common/config > index a47e462c..003b2a88 100644 > --- a/common/config > +++ b/common/config > @@ -256,6 +256,7 @@ export BTRFS_UTIL_PROG=$(type -P btrfs) > export BTRFS_SHOW_SUPER_PROG=$(type -P btrfs-show-super) > export BTRFS_CONVERT_PROG=$(type -P btrfs-convert) > export BTRFS_TUNE_PROG=$(type -P btrfstune) > +export BTRFS_CORRUPT_BLOCK_PROG=$(type -P btrfs-corrupt-block) > export XFS_FSR_PROG=$(type -P xfs_fsr) > export MKFS_NFS_PROG="false" > export MKFS_CIFS_PROG="false" > diff --git a/common/verity b/common/verity > index 38eea157..d2c1ea24 100644 > --- a/common/verity > +++ b/common/verity > @@ -8,6 +8,10 @@ _require_scratch_verity() > _require_scratch > _require_command "$FSVERITY_PROG" fsverity > > + if [ $FSTYP == "btrfs" ]; then > + _require_command "$BTRFS_CORRUPT_BLOCK_PROG" btrfs_corrupt_block > + fi Does the fsverity function depend on btrfs-corrupt-block command? I think btrfs-corrupt-block is only needed in this specific test, other btrfs fsverity tests may not depend on it. So add this require rule in the test if that's the case. > + > if ! _scratch_mkfs_verity &>>$seqres.full; then > # ext4: need e2fsprogs v1.44.5 or later (but actually v1.45.2+ > # is needed for some tests to pass, due to an e2fsck bug) > @@ -147,6 +151,9 @@ _scratch_mkfs_verity() > ext4|f2fs) > _scratch_mkfs -O verity > ;; > + btrfs) > + _scratch_mkfs > + ;; > *) > _notrun "No verity support for $FSTYP" > ;; > diff --git a/tests/btrfs/290 b/tests/btrfs/290 > new file mode 100755 > index 00000000..5aff7648 > --- /dev/null > +++ b/tests/btrfs/290 > @@ -0,0 +1,190 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# Copyright (C) 2021 Facebook, Inc. All Rights Reserved. > +# > +# FS QA Test 290 > +# > +# Test btrfs support for fsverity. > +# This test extends the generic fsverity testing by corrupting inline extents, > +# preallocated extents, holes, and the Merkle descriptor in a btrfs-aware way. > +# > +seq=`basename $0` > +seqres=$RESULT_DIR/$seq > +echo "QA output created by $seq" > + > +here=`pwd` > +tmp=/tmp/$$ > +status=1 # failure is the default! > +trap "cleanup; exit \$status" 0 1 2 3 15 > + > +# get standard environment, filters and checks > +. ./common/rc > +. ./common/filter > +. ./common/verity > + > +# remove previous $seqres.full before test > +rm -f $seqres.full > + > +_supported_fs btrfs > +_require_scratch > +_require_scratch_verity > + > +cleanup() Better to name it as _cleanup(), though usually we name local functions without the leading underscore, but _cleanup function is a bit special, almost all tests name it with "_" and it's in template in 'check' script. And it's easier to do a global s/_cleanup/cleanup/ if it's consistent with other tests. > +{ > + cd / > + rm -f $tmp.* > +} > + > +get_ino() { > + file=$1 Declare local variables with local keyword. > + ls -i $file | awk '{print $1}' stat -c "%i" > +} > + > +validate() { > + f=$1 > + sz=$2 sz is not used, but xfs_io below would use $sz > + # buffered io > + cat $f > /dev/null > + # direct io > + dd if=$f iflag=direct of=/dev/null status=none $XFS_IO_PROG -dc "pread -q 0 $sz" $f Direct I/O is used, then we need _require_odirect > +} > + > +# corrupt the data portion of an inline extent > +corrupt_inline() { > + f=$SCRATCH_MNT/inl > + head -c 42 /dev/zero | tr '\0' X > $f $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 42" $f And all usages in other functions. > + ino=$(get_ino $f) > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount > + # inline data starts at disk_bytenr > + # overwrite the first u64 with random bogus junk > + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f disk_bytenr $SCRATCH_DEV > /dev/null > + _scratch_mount > + validate $f Then all validte calls should pass file size as second param. > +} > + > +# preallocate a file, then corrupt it by changing it to a regular file > +corrupt_prealloc_to_reg() { > + f=$SCRATCH_MNT/prealloc > + fallocate -l 4k $f $XFS_IO_PROG -fc "falloc 0 4k" $f > + ino=$(get_ino $f) > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT Not sure why sync is needed in all the tests, we do umount in every test which syncs filesystem as well. > + _scratch_unmount > + # set extent type from prealloc (2) to reg (1) > + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f type -v 1 $SCRATCH_DEV 2>/dev/null >/dev/null Usually do ">/dev/null 2>&1" to discard stdout & stderr > + _scratch_mount > + validate $f > +} > + > +# corrupt a regular file by changing the type to preallocated > +corrupt_reg_to_prealloc() { > + f=$SCRATCH_MNT/reg > + head -c 12k /dev/zero | tr '\0' X > $f > + ino=$(get_ino $f) > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount > + # set type from reg (1) to prealloc (2) > + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f type -v 2 $SCRATCH_DEV 2>/dev/null >/dev/null > + _scratch_mount > + validate $f > +} > + > +# corrupt a file by punching a hole > +corrupt_punch_hole() { > + f=$SCRATCH_MNT/punch > + head -c 12k /dev/zero | tr '\0' X > $f > + ino=$(get_ino $f) > + # make a new extent in the middle > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + head -c 4k /dev/zero | tr '\0' Y | dd of=$f bs=4k count=1 seek=1 conv=notrunc 2>/dev/null $XFS_IO_PROG -c "pwrite -q -S 0x59 4k 4k" $f > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount > + # change disk_bytenr to 0, representing a hole > + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 4096 -f disk_bytenr -v 0 $SCRATCH_DEV > /dev/null > + _scratch_mount > + validate $f > +} > + > +# plug hole > +corrupt_plug_hole() { > + f=$SCRATCH_MNT/plug > + head -c 12k /dev/zero | tr '\0' X > $f > + ino=$(get_ino $f) > + fallocate -p -o 4k -l 4k $f > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount > + # change disk_bytenr to some value, plugging the hole > + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 4096 -f disk_bytenr -v 13639680 $SCRATCH_DEV > /dev/null > + _scratch_mount > + validate $f > +} > + > +# corrupt the fsverity descriptor item indiscriminately (causes EINVAL) > +corrupt_verity_descriptor() { > + f=$SCRATCH_MNT/desc > + head -c 12k /dev/zero | tr '\0' X > $f > + ino=$(get_ino $f) > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount > + # key for the descriptor item is <inode, BTRFS_VERITY_DESC_ITEM_KEY, 1>, > + # 88 is X. So we write 5 Xs to the start of the descriptor > + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,1 -v 88 -o 0 -b 5 $SCRATCH_DEV > /dev/null > + _scratch_mount > + validate $f > +} > + > +# specifically target the root hash in the descriptor (causes EIO) > +corrupt_root_hash() { > + f=$SCRATCH_MNT/roothash > + head -c 12k /dev/zero | tr '\0' X > $f > + ino=$(get_ino $f) > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount > + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,1 -v 88 -o 16 -b 1 $SCRATCH_DEV >> $seqres.full > + #$BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,0 -v 88 -o 120 -b 5 $SCRATCH_DEV > /dev/null > + _scratch_mount > + validate $f > +} > + > +# corrupt the Merkle tree data itself > +corrupt_merkle_tree() { > + f=$SCRATCH_MNT/merkle > + head -c 12k /dev/zero | tr '\0' X > $f > + ino=$(get_ino $f) > + _fsv_enable $f > + $XFS_IO_PROG -c sync $SCRATCH_MNT > + _scratch_unmount > + # key for the descriptor item is <inode, BTRFS_VERITY_MERKLE_ITEM_KEY, 0>, > + # 88 is X. So we write 5 Xs to somewhere in the middle of the first > + # merkle item > + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,37,0 -v 88 -o 100 -b 5 $SCRATCH_DEV > /dev/null > + _scratch_mount > + validate $f > +} > + > +# real QA test starts here > +_scratch_mkfs >/dev/null > +_scratch_mount > + > +corrupt_inline > +corrupt_prealloc_to_reg > +corrupt_reg_to_prealloc > +corrupt_punch_hole > +corrupt_plug_hole > +corrupt_verity_descriptor > +corrupt_root_hash > +corrupt_merkle_tree > + > +# we intentionally corrupted, re-mkfs to avoid tripping the corrupted fs error > +_scratch_unmount > +_scratch_mkfs >/dev/null Use _require_scratch_nocheck, then there's no post-test fsck. > + > +status=0 > +exit > diff --git a/tests/btrfs/290.out b/tests/btrfs/290.out > new file mode 100644 > index 00000000..4da61246 > --- /dev/null > +++ b/tests/btrfs/290.out > @@ -0,0 +1,17 @@ > +QA output created by 290 > +cat: /mnt/scratch/inl: Input/output error > +dd: error reading '/mnt/scratch/inl': Input/output error The $SCRATCH_MNT path in error message should be filtered, as people may hanve different SCRATCH_MNT defined. Use _filter_scratch, i.e. cat $f 2>&1 >/dev/null | _filter_sratch Thanks, Eryu > +cat: /mnt/scratch/prealloc: Input/output error > +dd: error reading '/mnt/scratch/prealloc': Input/output error > +cat: /mnt/scratch/reg: Input/output error > +dd: error reading '/mnt/scratch/reg': Input/output error > +cat: /mnt/scratch/punch: Input/output error > +dd: error reading '/mnt/scratch/punch': Input/output error > +cat: /mnt/scratch/plug: Input/output error > +dd: error reading '/mnt/scratch/plug': Input/output error > +cat: /mnt/scratch/desc: Invalid argument > +dd: failed to open '/mnt/scratch/desc': Invalid argument > +cat: /mnt/scratch/roothash: Input/output error > +dd: error reading '/mnt/scratch/roothash': Input/output error > +cat: /mnt/scratch/merkle: Input/output error > +dd: error reading '/mnt/scratch/merkle': Input/output error > diff --git a/tests/btrfs/group b/tests/btrfs/group > index 331dd432..13051562 100644 > --- a/tests/btrfs/group > +++ b/tests/btrfs/group > @@ -238,3 +238,4 @@ > 233 auto quick subvolume > 234 auto quick compress rw > 235 auto quick send > +290 auto quick verity > -- > 2.30.2
diff --git a/common/config b/common/config index a47e462c..003b2a88 100644 --- a/common/config +++ b/common/config @@ -256,6 +256,7 @@ export BTRFS_UTIL_PROG=$(type -P btrfs) export BTRFS_SHOW_SUPER_PROG=$(type -P btrfs-show-super) export BTRFS_CONVERT_PROG=$(type -P btrfs-convert) export BTRFS_TUNE_PROG=$(type -P btrfstune) +export BTRFS_CORRUPT_BLOCK_PROG=$(type -P btrfs-corrupt-block) export XFS_FSR_PROG=$(type -P xfs_fsr) export MKFS_NFS_PROG="false" export MKFS_CIFS_PROG="false" diff --git a/common/verity b/common/verity index 38eea157..d2c1ea24 100644 --- a/common/verity +++ b/common/verity @@ -8,6 +8,10 @@ _require_scratch_verity() _require_scratch _require_command "$FSVERITY_PROG" fsverity + if [ $FSTYP == "btrfs" ]; then + _require_command "$BTRFS_CORRUPT_BLOCK_PROG" btrfs_corrupt_block + fi + if ! _scratch_mkfs_verity &>>$seqres.full; then # ext4: need e2fsprogs v1.44.5 or later (but actually v1.45.2+ # is needed for some tests to pass, due to an e2fsck bug) @@ -147,6 +151,9 @@ _scratch_mkfs_verity() ext4|f2fs) _scratch_mkfs -O verity ;; + btrfs) + _scratch_mkfs + ;; *) _notrun "No verity support for $FSTYP" ;; diff --git a/tests/btrfs/290 b/tests/btrfs/290 new file mode 100755 index 00000000..5aff7648 --- /dev/null +++ b/tests/btrfs/290 @@ -0,0 +1,190 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2021 Facebook, Inc. All Rights Reserved. +# +# FS QA Test 290 +# +# Test btrfs support for fsverity. +# This test extends the generic fsverity testing by corrupting inline extents, +# preallocated extents, holes, and the Merkle descriptor in a btrfs-aware way. +# +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/verity + +# remove previous $seqres.full before test +rm -f $seqres.full + +_supported_fs btrfs +_require_scratch +_require_scratch_verity + +cleanup() +{ + cd / + rm -f $tmp.* +} + +get_ino() { + file=$1 + ls -i $file | awk '{print $1}' +} + +validate() { + f=$1 + sz=$2 + # buffered io + cat $f > /dev/null + # direct io + dd if=$f iflag=direct of=/dev/null status=none +} + +# corrupt the data portion of an inline extent +corrupt_inline() { + f=$SCRATCH_MNT/inl + head -c 42 /dev/zero | tr '\0' X > $f + ino=$(get_ino $f) + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + # inline data starts at disk_bytenr + # overwrite the first u64 with random bogus junk + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f disk_bytenr $SCRATCH_DEV > /dev/null + _scratch_mount + validate $f +} + +# preallocate a file, then corrupt it by changing it to a regular file +corrupt_prealloc_to_reg() { + f=$SCRATCH_MNT/prealloc + fallocate -l 4k $f + ino=$(get_ino $f) + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + # set extent type from prealloc (2) to reg (1) + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f type -v 1 $SCRATCH_DEV 2>/dev/null >/dev/null + _scratch_mount + validate $f +} + +# corrupt a regular file by changing the type to preallocated +corrupt_reg_to_prealloc() { + f=$SCRATCH_MNT/reg + head -c 12k /dev/zero | tr '\0' X > $f + ino=$(get_ino $f) + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + # set type from reg (1) to prealloc (2) + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f type -v 2 $SCRATCH_DEV 2>/dev/null >/dev/null + _scratch_mount + validate $f +} + +# corrupt a file by punching a hole +corrupt_punch_hole() { + f=$SCRATCH_MNT/punch + head -c 12k /dev/zero | tr '\0' X > $f + ino=$(get_ino $f) + # make a new extent in the middle + $XFS_IO_PROG -c sync $SCRATCH_MNT + head -c 4k /dev/zero | tr '\0' Y | dd of=$f bs=4k count=1 seek=1 conv=notrunc 2>/dev/null + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + # change disk_bytenr to 0, representing a hole + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 4096 -f disk_bytenr -v 0 $SCRATCH_DEV > /dev/null + _scratch_mount + validate $f +} + +# plug hole +corrupt_plug_hole() { + f=$SCRATCH_MNT/plug + head -c 12k /dev/zero | tr '\0' X > $f + ino=$(get_ino $f) + fallocate -p -o 4k -l 4k $f + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + # change disk_bytenr to some value, plugging the hole + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 4096 -f disk_bytenr -v 13639680 $SCRATCH_DEV > /dev/null + _scratch_mount + validate $f +} + +# corrupt the fsverity descriptor item indiscriminately (causes EINVAL) +corrupt_verity_descriptor() { + f=$SCRATCH_MNT/desc + head -c 12k /dev/zero | tr '\0' X > $f + ino=$(get_ino $f) + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + # key for the descriptor item is <inode, BTRFS_VERITY_DESC_ITEM_KEY, 1>, + # 88 is X. So we write 5 Xs to the start of the descriptor + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,1 -v 88 -o 0 -b 5 $SCRATCH_DEV > /dev/null + _scratch_mount + validate $f +} + +# specifically target the root hash in the descriptor (causes EIO) +corrupt_root_hash() { + f=$SCRATCH_MNT/roothash + head -c 12k /dev/zero | tr '\0' X > $f + ino=$(get_ino $f) + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,1 -v 88 -o 16 -b 1 $SCRATCH_DEV >> $seqres.full + #$BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,0 -v 88 -o 120 -b 5 $SCRATCH_DEV > /dev/null + _scratch_mount + validate $f +} + +# corrupt the Merkle tree data itself +corrupt_merkle_tree() { + f=$SCRATCH_MNT/merkle + head -c 12k /dev/zero | tr '\0' X > $f + ino=$(get_ino $f) + _fsv_enable $f + $XFS_IO_PROG -c sync $SCRATCH_MNT + _scratch_unmount + # key for the descriptor item is <inode, BTRFS_VERITY_MERKLE_ITEM_KEY, 0>, + # 88 is X. So we write 5 Xs to somewhere in the middle of the first + # merkle item + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,37,0 -v 88 -o 100 -b 5 $SCRATCH_DEV > /dev/null + _scratch_mount + validate $f +} + +# real QA test starts here +_scratch_mkfs >/dev/null +_scratch_mount + +corrupt_inline +corrupt_prealloc_to_reg +corrupt_reg_to_prealloc +corrupt_punch_hole +corrupt_plug_hole +corrupt_verity_descriptor +corrupt_root_hash +corrupt_merkle_tree + +# we intentionally corrupted, re-mkfs to avoid tripping the corrupted fs error +_scratch_unmount +_scratch_mkfs >/dev/null + +status=0 +exit diff --git a/tests/btrfs/290.out b/tests/btrfs/290.out new file mode 100644 index 00000000..4da61246 --- /dev/null +++ b/tests/btrfs/290.out @@ -0,0 +1,17 @@ +QA output created by 290 +cat: /mnt/scratch/inl: Input/output error +dd: error reading '/mnt/scratch/inl': Input/output error +cat: /mnt/scratch/prealloc: Input/output error +dd: error reading '/mnt/scratch/prealloc': Input/output error +cat: /mnt/scratch/reg: Input/output error +dd: error reading '/mnt/scratch/reg': Input/output error +cat: /mnt/scratch/punch: Input/output error +dd: error reading '/mnt/scratch/punch': Input/output error +cat: /mnt/scratch/plug: Input/output error +dd: error reading '/mnt/scratch/plug': Input/output error +cat: /mnt/scratch/desc: Invalid argument +dd: failed to open '/mnt/scratch/desc': Invalid argument +cat: /mnt/scratch/roothash: Input/output error +dd: error reading '/mnt/scratch/roothash': Input/output error +cat: /mnt/scratch/merkle: Input/output error +dd: error reading '/mnt/scratch/merkle': Input/output error diff --git a/tests/btrfs/group b/tests/btrfs/group index 331dd432..13051562 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -238,3 +238,4 @@ 233 auto quick subvolume 234 auto quick compress rw 235 auto quick send +290 auto quick verity
There are some btrfs specific fsverity scenarios that don't map neatly onto the tests in generic/574 like holes, inline extents, and preallocated extents. Cover those in a btrfs specific test. This test relies on the btrfs implementation of fsverity in: <kernel patches> and it relies on btrfs-corrupt-block for corruption, with the patches: <corrupt block patches> Signed-off-by: Boris Burkov <boris@bur.io> --- common/config | 1 + common/verity | 7 ++ tests/btrfs/290 | 190 ++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/290.out | 17 ++++ tests/btrfs/group | 1 + 5 files changed, 216 insertions(+) create mode 100755 tests/btrfs/290 create mode 100644 tests/btrfs/290.out