Hi Eric,
On Tue, Oct 15, 2019 at 11:16:40AM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> Test non-root use of the fscrypt filesystem-level encryption keyring and
> v2 encryption policies.
This testcase now fails on latest Linus tree with latest e2fsprogs
on ext4:
FSTYP -- ext4
PLATFORM -- Linux/x86_64 dell-pesc430-01 5.4.0+ #1 SMP Mon Nov 25 16:40:55 EST 2019
MKFS_OPTIONS -- /dev/sda3
MOUNT_OPTIONS -- -o acl,user_xattr -o context=system_u:object_r:nfs_t:s0 /dev/sda3 /mnt/xfstests/mnt2
generic/581 - output mismatch (see /var/lib/xfstests/results//generic/581.out.bad)
--- tests/generic/581.out 2019-11-25 20:30:04.536051638 -0500
+++ /var/lib/xfstests/results//generic/581.out.bad 2019-11-26 01:04:17.318332220 -0500
@@ -33,7 +33,7 @@
Added encryption key
Added encryption key
Added encryption key
-Error adding encryption key: Disk quota exceeded
+Added encryption key
# Adding key as root
...
A rough looking back shows that this probably started since your fscrypt
update for 5.5, added support for IV_INO_LBLK_64 encryption policies.
I guess you are aware of this :-)
Thanks,
Murphy
>
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> ---
> tests/generic/801 | 144 ++++++++++++++++++++++++++++++++++++++++++
> tests/generic/801.out | 62 ++++++++++++++++++
> tests/generic/group | 1 +
> 3 files changed, 207 insertions(+)
> create mode 100755 tests/generic/801
> create mode 100644 tests/generic/801.out
>
> diff --git a/tests/generic/801 b/tests/generic/801
> new file mode 100755
> index 00000000..c759ec94
> --- /dev/null
> +++ b/tests/generic/801
> @@ -0,0 +1,144 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright 2019 Google LLC
> +#
> +# FS QA Test generic/801
> +#
> +# Test non-root use of the fscrypt filesystem-level encryption keyring
> +# and v2 encryption policies.
> +#
> +
> +seq=`basename $0`
> +seqres=$RESULT_DIR/$seq
> +echo "QA output created by $seq"
> +echo
> +
> +here=`pwd`
> +tmp=/tmp/$$
> +status=1 # failure is the default!
> +trap "_cleanup; exit \$status" 0 1 2 3 15
> +orig_maxkeys=
> +
> +_cleanup()
> +{
> + cd /
> + rm -f $tmp.*
> + if [ -n "$orig_maxkeys" ]; then
> + echo "$orig_maxkeys" > /proc/sys/kernel/keys/maxkeys
> + fi
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +. ./common/encrypt
> +
> +# remove previous $seqres.full before test
> +rm -f $seqres.full
> +
> +# real QA test starts here
> +_supported_fs generic
> +_supported_os Linux
> +_require_user
> +_require_scratch_encryption -v 2
> +
> +_scratch_mkfs_encrypted &>> $seqres.full
> +_scratch_mount
> +
> +# Set the fsgqa user's key quota to their current number of keys plus 5.
> +orig_keys=$(_user_do "awk '/^[[:space:]]*$(id -u fsgqa):/{print \$4}' /proc/key-users | cut -d/ -f1")
> +: ${orig_keys:=0}
> +echo "orig_keys=$orig_keys" >> $seqres.full
> +orig_maxkeys=$(</proc/sys/kernel/keys/maxkeys)
> +keys_to_add=5
> +echo $((orig_keys + keys_to_add)) > /proc/sys/kernel/keys/maxkeys
> +
> +dir=$SCRATCH_MNT/dir
> +
> +raw_key=""
> +for i in `seq 64`; do
> + raw_key+="\\x$(printf "%02x" $i)"
> +done
> +keydesc="0000111122223333"
> +keyid="69b2f6edeee720cce0577937eb8a6751"
> +chmod 777 $SCRATCH_MNT
> +
> +_user_do "mkdir $dir"
> +
> +echo "# Setting v1 policy as regular user (should succeed)"
> +_user_do_set_encpolicy $dir $keydesc
> +
> +echo "# Getting v1 policy as regular user (should succeed)"
> +_user_do_get_encpolicy $dir | _filter_scratch
> +
> +echo "# Adding v1 policy key as regular user (should fail with EACCES)"
> +_user_do_add_enckey $SCRATCH_MNT "$raw_key" -d $keydesc
> +
> +rm -rf $dir
> +echo
> +_user_do "mkdir $dir"
> +
> +echo "# Setting v2 policy as regular user without key already added (should fail with ENOKEY)"
> +_user_do_set_encpolicy $dir $keyid |& _filter_scratch
> +
> +echo "# Adding v2 policy key as regular user (should succeed)"
> +_user_do_add_enckey $SCRATCH_MNT "$raw_key"
> +
> +echo "# Setting v2 policy as regular user with key added (should succeed)"
> +_user_do_set_encpolicy $dir $keyid
> +
> +echo "# Getting v2 policy as regular user (should succeed)"
> +_user_do_get_encpolicy $dir | _filter_scratch
> +
> +echo "# Creating encrypted file as regular user (should succeed)"
> +_user_do "echo contents > $dir/file"
> +
> +echo "# Removing v2 policy key as regular user (should succeed)"
> +_user_do_rm_enckey $SCRATCH_MNT $keyid
> +
> +_scratch_cycle_mount # Clear all keys
> +
> +echo
> +echo "# Testing user key quota"
> +for i in `seq $((keys_to_add + 1))`; do
> + rand_raw_key=$(_generate_raw_encryption_key)
> + _user_do_add_enckey $SCRATCH_MNT "$rand_raw_key" \
> + | sed 's/ with identifier .*$//'
> +done
> +
> +rm -rf $dir
> +echo
> +_user_do "mkdir $dir"
> +_scratch_cycle_mount # Clear all keys
> +
> +# Test multiple users adding the same key.
> +echo "# Adding key as root"
> +_add_enckey $SCRATCH_MNT "$raw_key"
> +echo "# Getting key status as regular user"
> +_user_do_enckey_status $SCRATCH_MNT $keyid
> +echo "# Removing key only added by another user (should fail with ENOKEY)"
> +_user_do_rm_enckey $SCRATCH_MNT $keyid
> +echo "# Setting v2 encryption policy with key only added by another user (should fail with ENOKEY)"
> +_user_do_set_encpolicy $dir $keyid |& _filter_scratch
> +echo "# Adding second user of key"
> +_user_do_add_enckey $SCRATCH_MNT "$raw_key"
> +echo "# Getting key status as regular user"
> +_user_do_enckey_status $SCRATCH_MNT $keyid
> +echo "# Setting v2 encryption policy as regular user"
> +_user_do_set_encpolicy $dir $keyid
> +echo "# Removing this user's claim to the key"
> +_user_do_rm_enckey $SCRATCH_MNT $keyid
> +echo "# Getting key status as regular user"
> +_user_do_enckey_status $SCRATCH_MNT $keyid
> +echo "# Adding back second user of key"
> +_user_do_add_enckey $SCRATCH_MNT "$raw_key"
> +echo "# Remove key for \"all users\", as regular user (should fail with EACCES)"
> +_user_do_rm_enckey $SCRATCH_MNT $keyid -a |& _filter_scratch
> +_enckey_status $SCRATCH_MNT $keyid
> +echo "# Remove key for \"all users\", as root"
> +_rm_enckey $SCRATCH_MNT $keyid -a
> +_enckey_status $SCRATCH_MNT $keyid
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/generic/801.out b/tests/generic/801.out
> new file mode 100644
> index 00000000..b5b6cec8
> --- /dev/null
> +++ b/tests/generic/801.out
> @@ -0,0 +1,62 @@
> +QA output created by 801
> +
> +# Setting v1 policy as regular user (should succeed)
> +# Getting v1 policy as regular user (should succeed)
> +Encryption policy for SCRATCH_MNT/dir:
> + Policy version: 0
> + Master key descriptor: 0000111122223333
> + Contents encryption mode: 1 (AES-256-XTS)
> + Filenames encryption mode: 4 (AES-256-CTS)
> + Flags: 0x02
> +# Adding v1 policy key as regular user (should fail with EACCES)
> +Permission denied
> +
> +# Setting v2 policy as regular user without key already added (should fail with ENOKEY)
> +SCRATCH_MNT/dir: failed to set encryption policy: Required key not available
> +# Adding v2 policy key as regular user (should succeed)
> +Added encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
> +# Setting v2 policy as regular user with key added (should succeed)
> +# Getting v2 policy as regular user (should succeed)
> +Encryption policy for SCRATCH_MNT/dir:
> + Policy version: 2
> + Master key identifier: 69b2f6edeee720cce0577937eb8a6751
> + Contents encryption mode: 1 (AES-256-XTS)
> + Filenames encryption mode: 4 (AES-256-CTS)
> + Flags: 0x02
> +# Creating encrypted file as regular user (should succeed)
> +# Removing v2 policy key as regular user (should succeed)
> +Removed encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
> +
> +# Testing user key quota
> +Added encryption key
> +Added encryption key
> +Added encryption key
> +Added encryption key
> +Added encryption key
> +Error adding encryption key: Disk quota exceeded
> +
> +# Adding key as root
> +Added encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
> +# Getting key status as regular user
> +Present (user_count=1)
> +# Removing key only added by another user (should fail with ENOKEY)
> +Error removing encryption key: Required key not available
> +# Setting v2 encryption policy with key only added by another user (should fail with ENOKEY)
> +SCRATCH_MNT/dir: failed to set encryption policy: Required key not available
> +# Adding second user of key
> +Added encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
> +# Getting key status as regular user
> +Present (user_count=2, added_by_self)
> +# Setting v2 encryption policy as regular user
> +# Removing this user's claim to the key
> +Removed user's claim to encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
> +# Getting key status as regular user
> +Present (user_count=1)
> +# Adding back second user of key
> +Added encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
> +# Remove key for "all users", as regular user (should fail with EACCES)
> +Permission denied
> +Present (user_count=2, added_by_self)
> +# Remove key for "all users", as root
> +Removed encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
> +Absent
> diff --git a/tests/generic/group b/tests/generic/group
> index cf2240ec..6d1ecf5a 100644
> --- a/tests/generic/group
> +++ b/tests/generic/group
> @@ -582,3 +582,4 @@
> 577 auto quick verity
> 578 auto quick rw clone
> 800 auto quick encrypt
> +801 auto quick encrypt
> --
> 2.23.0.700.g56cf767bdb-goog
>
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