2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (C) 2019 CTERA Networks. All Rights Reserved.
7 # Test encode/decode of nested overlay file handles
9 # This is a variant of overlay file handles test for an overlayfs that is
10 # nested over another lower overlayfs on the same fs.
12 # - Check encode/write/decode/read content of lower/upper file handles
13 # - Check encode/decode/write/read content of lower/upper file handles
14 # - Check decode/read of unlinked lower/upper files and directories
15 # - Check decode/read of lower file handles after copy up, link and unlink
16 # - Check decode/read of lower file handles after rename of parent and self
18 # This test does not cover connectable file handles of non-directories,
19 # because name_to_handle_at() syscall does not support requesting connectable
23 seqres=$RESULT_DIR/$seq
24 echo "QA output created by $seq"
28 status=1 # failure is the default!
29 trap "_cleanup; exit \$status" 0 1 2 3 15
35 # Unmount the nested overlay mount
36 $UMOUNT_PROG $mnt2 2>/dev/null
39 # get standard environment, filters and checks
43 # real QA test starts here
48 # _require_exportfs already requires open_by_handle, but let's not count on it
49 _require_test_program "open_by_handle"
50 # We need to require all features together, because nfs_export cannot
51 # be enabled when index is disabled
52 _require_scratch_overlay_features index nfs_export redirect_dir
54 # Lower dir of nested overlay is the scratch overlay mount at SCRATCH_MNT
55 upper2=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER.2
56 work2=$OVL_BASE_SCRATCH_MNT/$OVL_WORK.2
57 mnt2=$OVL_BASE_SCRATCH_MNT/$OVL_MNT.2
59 lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER/lowertestdir
60 upperdir=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER/uppertestdir
61 lowertestdir=$mnt2/lowertestdir
62 uppertestdir=$mnt2/uppertestdir
65 # Create test dir and empty test files
71 $here/src/open_by_handle -cp $opt $dir $NUMFILES
74 # Test encode/decode file handles on overlay mount
80 echo test_file_handles $dir $* | _filter_scratch | _filter_ovl_dirs | \
82 $here/src/open_by_handle $* $dir $NUMFILES
85 # Re-create lower/upper/work dirs
88 # Create the underlying overlay dirs
91 # Create the nested overlay upper dirs
92 mkdir -p $upper2 $work2 $mnt2
95 # Mount a nested overlay with $SCRATCH_MNT as lower layer
98 # Mount the underlying overlay
99 _scratch_mount -o "index=on,nfs_export=on,redirect_dir=on"
101 # Mount the nested overlay
102 _overlay_mount_dirs $SCRATCH_MNT $upper2 $work2 overlay2 $mnt2 \
103 -o "index=on,nfs_export=on,redirect_dir=on" 2>/dev/null ||
104 _notrun "cannot mount nested overlay with nfs_export=on option"
105 _fs_options overlay2 | grep -q "nfs_export=on" || \
106 _notrun "cannot enable nfs_export feature on nested overlay"
109 # Unmount the nested overlay mount and check underlying overlay layers
112 # unmount & check nested overlay
114 _overlay_check_dirs $SCRATCH_MNT $upper2 $work2 \
115 -o "index=on,nfs_export=on,redirect_dir=on"
117 # unmount & check underlying overlay
122 # Check non-stale file handles of lower/upper files and verify
123 # that handle decoded before copy up is encoded to upper after
124 # copy up. Verify reading data from file open by file handle
125 # and verify access_at() with dirfd open by file handle.
127 create_test_files $upperdir
128 create_test_files $lowerdir
130 # Check encode/decode of upper regular file handles
131 test_file_handles $uppertestdir
132 # Check encode/decode of upper dir file handle
133 test_file_handles $uppertestdir -p
134 # Check encode/write/decode/read/write of upper file handles
135 test_file_handles $uppertestdir -wrap
136 # Check encode/decode of lower regular file handles before copy up
137 test_file_handles $lowertestdir
138 # Check encode/decode of lower dir file handles before copy up
139 test_file_handles $lowertestdir -p
140 # Check encode/write/decode/read/write of lower file handles across copy up
141 test_file_handles $lowertestdir -wrap
144 # Check copy up after encode/decode of lower/upper files
145 # (copy up of disconnected dentry to index dir)
147 create_test_files $upperdir
148 create_test_files $lowerdir
150 # Check encode/decode/write/read of upper regular file handles
151 test_file_handles $uppertestdir -a
152 test_file_handles $uppertestdir -r
153 # Check encode/decode/write/read of lower regular file handles
154 test_file_handles $lowertestdir -a
155 test_file_handles $lowertestdir -r
158 # Check non-stale handles to unlinked but open lower/upper files
160 create_test_files $upperdir
161 create_test_files $upperdir.rw
162 create_test_files $lowerdir
163 create_test_files $lowerdir.rw
165 test_file_handles $uppertestdir -dk
166 # Check encode/write/unlink/decode/read of upper regular file handles
167 test_file_handles $uppertestdir.rw -rwdk
168 test_file_handles $lowertestdir -dk
169 # Check encode/write/unlink/decode/read of lower file handles across copy up
170 test_file_handles $lowertestdir.rw -rwdk
173 # Check stale handles of unlinked lower/upper files (nlink = 1,0)
175 create_test_files $upperdir
176 create_test_files $lowerdir
178 # Check decode of upper file handles after unlink/rmdir (nlink == 0)
179 test_file_handles $uppertestdir -dp
180 # Check decode of lower file handles after unlink/rmdir (nlink == 0)
181 test_file_handles $lowertestdir -dp
184 # Check non-stale file handles of linked lower/upper files (nlink = 1,2,1)
186 create_test_files $upperdir
187 create_test_files $lowerdir
189 # Check encode/decode of upper file handles (nlink == 1)
190 test_file_handles $uppertestdir
191 # Check decode/read of upper file handles after link (nlink == 2)
192 test_file_handles $uppertestdir -wlr
193 # Check decode/read of upper file handles after link + unlink (nlink == 1)
194 test_file_handles $uppertestdir -ur
195 # Check encode/decode of lower file handles before copy up (nlink == 1)
196 test_file_handles $lowertestdir
197 # Check decode/read of lower file handles after copy up + link (nlink == 2)
198 test_file_handles $lowertestdir -wlr
199 # Check decode/read of lower file handles after copy up + link + unlink (nlink == 1)
200 test_file_handles $lowertestdir -ur
203 # Check non-stale file handles of linked lower/upper hardlinks (nlink = 2,1)
205 create_test_files $upperdir
206 create_test_files $lowerdir
207 # Create lower/upper hardlinks
208 test_file_handles $lowerdir -l >/dev/null
209 test_file_handles $upperdir -l >/dev/null
211 # Check encode/decode of upper hardlink file handles (nlink == 2)
212 test_file_handles $uppertestdir
213 # Check decode/read of upper hardlink file handles after unlink (nlink == 1)
214 test_file_handles $uppertestdir -wur
215 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
216 test_file_handles $lowertestdir
217 # Check decode/read of lower hardlink file handles after copy up + unlink (nlink == 1)
218 test_file_handles $lowertestdir -wur
221 # Check stale file handles of unlinked lower/upper hardlinks (nlink = 2,0)
223 create_test_files $upperdir
224 create_test_files $lowerdir
225 # Create lower/upper hardlinks
226 test_file_handles $lowerdir -l >/dev/null
227 test_file_handles $upperdir -l >/dev/null
229 # Check encode/decode of upper hardlink file handles (nlink == 2)
230 test_file_handles $uppertestdir
231 # Check decode of upper hardlink file handles after 2*unlink (nlink == 0)
232 test_file_handles $uppertestdir -d
233 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
234 test_file_handles $lowertestdir
235 # Check decode of lower hardlink file handles after copy up + 2*unlink (nlink == 0)
236 test_file_handles $lowertestdir -d
239 # Check non-stale file handles of lower/upper renamed files
241 create_test_files $upperdir
242 create_test_files $lowerdir
244 # Check decode/read of upper file handles after rename in same upper parent
245 test_file_handles $uppertestdir -wmr
246 # Check decode/read of lower file handles after copy up + rename in same merge parent
247 test_file_handles $lowertestdir -wmr
250 # Check non-stale file handles of lower/upper moved files
252 create_test_files $upperdir -w
253 create_test_files $lowerdir -w
254 mkdir -p $lowerdir.lo $lowerdir.up $upperdir.lo $upperdir.up
256 # Check encode/decode/read of lower/upper file handles after move to new upper testdir
257 test_file_handles $uppertestdir -o $tmp.upper_file_handles
258 test_file_handles $lowertestdir -o $tmp.lower_file_handles
259 mv $uppertestdir/* $uppertestdir.up/
260 mv $lowertestdir/* $uppertestdir.lo/
261 # Check open and read from stored file handles
262 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
263 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
264 # Check encode/decode/read of lower/upper file handles after move to new merge testdir
265 test_file_handles $uppertestdir.up -o $tmp.upper_file_handles
266 test_file_handles $uppertestdir.lo -o $tmp.lower_file_handles
267 mv $uppertestdir.up/* $lowertestdir.up/
268 mv $uppertestdir.lo/* $lowertestdir.lo/
269 # Check open and read from stored file handles
270 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
271 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
274 # Check non-stale file handles of lower/upper renamed dirs
276 create_test_files $upperdir -w
277 create_test_files $lowerdir -w
278 create_test_files $upperdir/subdir -w
279 create_test_files $lowerdir/subdir -w
281 # Check encode/decode/read of lower/upper file handles after rename of testdir
282 test_file_handles $uppertestdir -p -o $tmp.upper_file_handles
283 test_file_handles $lowertestdir -p -o $tmp.lower_file_handles
284 # Check encode/decode/read of lower/upper file handles after rename of testdir's parent
285 test_file_handles $uppertestdir/subdir -p -o $tmp.upper_subdir_file_handles
286 test_file_handles $lowertestdir/subdir -p -o $tmp.lower_subdir_file_handles
287 # Rename pure upper dir
288 mv $uppertestdir $uppertestdir.new/
289 # Copy up lower dir, index and rename
290 mv $lowertestdir $lowertestdir.new/
291 # Check open, read and readdir from stored file handles
292 # (testdir argument is the mount point and NOT the dir
293 # we are trying to open by stored file handle)
294 test_file_handles $mnt2 -rp -i $tmp.upper_file_handles
295 test_file_handles $mnt2 -rp -i $tmp.lower_file_handles
296 test_file_handles $mnt2 -rp -i $tmp.upper_subdir_file_handles
297 test_file_handles $mnt2 -rp -i $tmp.lower_subdir_file_handles
298 # Retry decoding lower subdir file handle when indexed testdir is in dcache
299 # (providing renamed testdir argument pins the indexed testdir to dcache)
300 test_file_handles $lowertestdir.new -rp -i $tmp.lower_subdir_file_handles