2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright 2019 Google LLC
5 # FS QA Test No. generic/581
7 # Test non-root use of the fscrypt filesystem-level encryption keyring
8 # and v2 encryption policies.
12 seqres=$RESULT_DIR/$seq
13 echo "QA output created by $seq"
18 status=1 # failure is the default!
19 trap "_cleanup; exit \$status" 0 1 2 3 15
26 if [ -n "$orig_maxkeys" ]; then
27 echo "$orig_maxkeys" > /proc/sys/kernel/keys/maxkeys
31 # get standard environment, filters and checks
36 # remove previous $seqres.full before test
39 # real QA test starts here
42 _require_scratch_encryption -v 2
44 _scratch_mkfs_encrypted &>> $seqres.full
51 raw_key+="\\x$(printf "%02x" $i)"
53 keydesc="0000111122223333"
54 keyid="69b2f6edeee720cce0577937eb8a6751"
55 chmod 777 $SCRATCH_MNT
59 echo "# Setting v1 policy as regular user (should succeed)"
60 _user_do_set_encpolicy $dir $keydesc
62 echo "# Getting v1 policy as regular user (should succeed)"
63 _user_do_get_encpolicy $dir | _filter_scratch
65 echo "# Adding v1 policy key as regular user (should fail with EACCES)"
66 _user_do_add_enckey $SCRATCH_MNT "$raw_key" -d $keydesc
72 echo "# Setting v2 policy as regular user without key already added (should fail with ENOKEY)"
73 _user_do_set_encpolicy $dir $keyid |& _filter_scratch
75 echo "# Adding v2 policy key as regular user (should succeed)"
76 _user_do_add_enckey $SCRATCH_MNT "$raw_key"
78 echo "# Setting v2 policy as regular user with key added (should succeed)"
79 _user_do_set_encpolicy $dir $keyid
81 echo "# Getting v2 policy as regular user (should succeed)"
82 _user_do_get_encpolicy $dir | _filter_scratch
84 echo "# Creating encrypted file as regular user (should succeed)"
85 _user_do "echo contents > $dir/file"
87 echo "# Removing v2 policy key as regular user (should succeed)"
88 _user_do_rm_enckey $SCRATCH_MNT $keyid
90 _scratch_cycle_mount # Clear all keys
92 # Wait for any invalidated keys to be garbage-collected.
94 while grep -E -q '^[0-9a-f]+ [^ ]*i[^ ]*' /proc/keys; do
95 if ((++i >= 20)); then
96 echo "Timed out waiting for invalidated keys to be GC'ed" >> $seqres.full
102 # Set the user key quota to the fsgqa user's current number of keys plus 5.
103 orig_keys=$(_user_do "awk '/^[[:space:]]*$(id -u fsgqa):/{print \$4}' /proc/key-users | cut -d/ -f1")
105 echo "orig_keys=$orig_keys" >> $seqres.full
106 orig_maxkeys=$(</proc/sys/kernel/keys/maxkeys)
108 echo $((orig_keys + keys_to_add)) > /proc/sys/kernel/keys/maxkeys
111 echo "# Testing user key quota"
112 for i in `seq $((keys_to_add + 1))`; do
113 rand_raw_key=$(_generate_raw_encryption_key)
114 _user_do_add_enckey $SCRATCH_MNT "$rand_raw_key" \
115 | sed 's/ with identifier .*$//'
118 # Restore the original key quota.
119 echo "$orig_maxkeys" > /proc/sys/kernel/keys/maxkeys
123 _user_do "mkdir $dir"
124 _scratch_cycle_mount # Clear all keys
126 # Test multiple users adding the same key.
127 echo "# Adding key as root"
128 _add_enckey $SCRATCH_MNT "$raw_key"
129 echo "# Getting key status as regular user"
130 _user_do_enckey_status $SCRATCH_MNT $keyid
131 echo "# Removing key only added by another user (should fail with ENOKEY)"
132 _user_do_rm_enckey $SCRATCH_MNT $keyid
133 echo "# Setting v2 encryption policy with key only added by another user (should fail with ENOKEY)"
134 _user_do_set_encpolicy $dir $keyid |& _filter_scratch
135 echo "# Adding second user of key"
136 _user_do_add_enckey $SCRATCH_MNT "$raw_key"
137 echo "# Getting key status as regular user"
138 _user_do_enckey_status $SCRATCH_MNT $keyid
139 echo "# Setting v2 encryption policy as regular user"
140 _user_do_set_encpolicy $dir $keyid
141 echo "# Removing this user's claim to the key"
142 _user_do_rm_enckey $SCRATCH_MNT $keyid
143 echo "# Getting key status as regular user"
144 _user_do_enckey_status $SCRATCH_MNT $keyid
145 echo "# Adding back second user of key"
146 _user_do_add_enckey $SCRATCH_MNT "$raw_key"
147 echo "# Remove key for \"all users\", as regular user (should fail with EACCES)"
148 _user_do_rm_enckey $SCRATCH_MNT $keyid -a |& _filter_scratch
149 _enckey_status $SCRATCH_MNT $keyid
150 echo "# Remove key for \"all users\", as root"
151 _rm_enckey $SCRATCH_MNT $keyid -a
152 _enckey_status $SCRATCH_MNT $keyid