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 $mnt2 2>/dev/null
39 # get standard environment, filters and checks
43 # real QA test starts here
47 # _require_exportfs already requires open_by_handle, but let's not count on it
48 _require_test_program "open_by_handle"
49 # We need to require all features together, because nfs_export cannot
50 # be enabled when index is disabled
51 _require_scratch_overlay_features index nfs_export redirect_dir
53 # Lower dir of nested overlay is the scratch overlay mount at SCRATCH_MNT
54 upper2=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER.2
55 work2=$OVL_BASE_SCRATCH_MNT/$OVL_WORK.2
56 mnt2=$OVL_BASE_SCRATCH_MNT/$OVL_MNT.2
58 lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER/lowertestdir
59 upperdir=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER/uppertestdir
60 lowertestdir=$mnt2/lowertestdir
61 uppertestdir=$mnt2/uppertestdir
64 # Create test dir and empty test files
70 $here/src/open_by_handle -cp $opt $dir $NUMFILES
73 # Test encode/decode file handles on overlay mount
79 echo test_file_handles $dir $* | _filter_scratch | _filter_ovl_dirs | \
81 $here/src/open_by_handle $* $dir $NUMFILES
84 # Re-create lower/upper/work dirs
87 # Create the underlying overlay dirs
90 # Create the nested overlay upper dirs
91 mkdir -p $upper2 $work2 $mnt2
94 # Mount a nested overlay with $SCRATCH_MNT as lower layer
97 # Mount the underlying overlay
98 _scratch_mount -o "index=on,nfs_export=on,redirect_dir=on"
100 # Mount the nested overlay
101 _overlay_mount_dirs $SCRATCH_MNT $upper2 $work2 overlay2 $mnt2 \
102 -o "index=on,nfs_export=on,redirect_dir=on" 2>/dev/null ||
103 _notrun "cannot mount nested overlay with nfs_export=on option"
104 _check_overlay_feature nfs_export overlay2 $mnt2
107 # Unmount the nested overlay mount and check underlying overlay layers
110 # unmount & check nested overlay
112 _overlay_check_dirs $SCRATCH_MNT $upper2 $work2 \
113 -o "index=on,nfs_export=on,redirect_dir=on"
115 # unmount & check underlying overlay
120 # Check non-stale file handles of lower/upper files and verify
121 # that handle decoded before copy up is encoded to upper after
122 # copy up. Verify reading data from file open by file handle
123 # and verify access_at() with dirfd open by file handle.
125 create_test_files $upperdir
126 create_test_files $lowerdir
128 # Check encode/decode of upper regular file handles
129 test_file_handles $uppertestdir
130 # Check encode/decode of upper dir file handle
131 test_file_handles $uppertestdir -p
132 # Check encode/write/decode/read/write of upper file handles
133 test_file_handles $uppertestdir -wrap
134 # Check encode/decode of lower regular file handles before copy up
135 test_file_handles $lowertestdir
136 # Check encode/decode of lower dir file handles before copy up
137 test_file_handles $lowertestdir -p
138 # Check encode/write/decode/read/write of lower file handles across copy up
139 test_file_handles $lowertestdir -wrap
142 # Check copy up after encode/decode of lower/upper files
143 # (copy up of disconnected dentry to index dir)
145 create_test_files $upperdir
146 create_test_files $lowerdir
148 # Check encode/decode/write/read of upper regular file handles
149 test_file_handles $uppertestdir -a
150 test_file_handles $uppertestdir -r
151 # Check encode/decode/write/read of lower regular file handles
152 test_file_handles $lowertestdir -a
153 test_file_handles $lowertestdir -r
156 # Check non-stale handles to unlinked but open lower/upper files
158 create_test_files $upperdir
159 create_test_files $upperdir.rw
160 create_test_files $lowerdir
161 create_test_files $lowerdir.rw
163 test_file_handles $uppertestdir -dk
164 # Check encode/write/unlink/decode/read of upper regular file handles
165 test_file_handles $uppertestdir.rw -rwdk
166 test_file_handles $lowertestdir -dk
167 # Check encode/write/unlink/decode/read of lower file handles across copy up
168 test_file_handles $lowertestdir.rw -rwdk
171 # Check stale handles of unlinked lower/upper files (nlink = 1,0)
173 create_test_files $upperdir
174 create_test_files $lowerdir
176 # Check decode of upper file handles after unlink/rmdir (nlink == 0)
177 test_file_handles $uppertestdir -dp
178 # Check decode of lower file handles after unlink/rmdir (nlink == 0)
179 test_file_handles $lowertestdir -dp
182 # Check non-stale file handles of linked lower/upper files (nlink = 1,2,1)
184 create_test_files $upperdir
185 create_test_files $lowerdir
187 # Check encode/decode of upper file handles (nlink == 1)
188 test_file_handles $uppertestdir
189 # Check decode/read of upper file handles after link (nlink == 2)
190 test_file_handles $uppertestdir -wlr
191 # Check decode/read of upper file handles after link + unlink (nlink == 1)
192 test_file_handles $uppertestdir -ur
193 # Check encode/decode of lower file handles before copy up (nlink == 1)
194 test_file_handles $lowertestdir
195 # Check decode/read of lower file handles after copy up + link (nlink == 2)
196 test_file_handles $lowertestdir -wlr
197 # Check decode/read of lower file handles after copy up + link + unlink (nlink == 1)
198 test_file_handles $lowertestdir -ur
201 # Check non-stale file handles of linked lower/upper hardlinks (nlink = 2,1)
203 create_test_files $upperdir
204 create_test_files $lowerdir
205 # Create lower/upper hardlinks
206 test_file_handles $lowerdir -l >/dev/null
207 test_file_handles $upperdir -l >/dev/null
209 # Check encode/decode of upper hardlink file handles (nlink == 2)
210 test_file_handles $uppertestdir
211 # Check decode/read of upper hardlink file handles after unlink (nlink == 1)
212 test_file_handles $uppertestdir -wur
213 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
214 test_file_handles $lowertestdir
215 # Check decode/read of lower hardlink file handles after copy up + unlink (nlink == 1)
216 test_file_handles $lowertestdir -wur
219 # Check stale file handles of unlinked lower/upper hardlinks (nlink = 2,0)
221 create_test_files $upperdir
222 create_test_files $lowerdir
223 # Create lower/upper hardlinks
224 test_file_handles $lowerdir -l >/dev/null
225 test_file_handles $upperdir -l >/dev/null
227 # Check encode/decode of upper hardlink file handles (nlink == 2)
228 test_file_handles $uppertestdir
229 # Check decode of upper hardlink file handles after 2*unlink (nlink == 0)
230 test_file_handles $uppertestdir -d
231 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
232 test_file_handles $lowertestdir
233 # Check decode of lower hardlink file handles after copy up + 2*unlink (nlink == 0)
234 test_file_handles $lowertestdir -d
237 # Check non-stale file handles of lower/upper renamed files
239 create_test_files $upperdir
240 create_test_files $lowerdir
242 # Check decode/read of upper file handles after rename in same upper parent
243 test_file_handles $uppertestdir -wmr
244 # Check decode/read of lower file handles after copy up + rename in same merge parent
245 test_file_handles $lowertestdir -wmr
248 # Check non-stale file handles of lower/upper moved files
250 create_test_files $upperdir -w
251 create_test_files $lowerdir -w
252 mkdir -p $lowerdir.lo $lowerdir.up $upperdir.lo $upperdir.up
254 # Check encode/decode/read of lower/upper file handles after move to new upper testdir
255 test_file_handles $uppertestdir -o $tmp.upper_file_handles
256 test_file_handles $lowertestdir -o $tmp.lower_file_handles
257 mv $uppertestdir/* $uppertestdir.up/
258 mv $lowertestdir/* $uppertestdir.lo/
259 # Check open and read from stored file handles
260 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
261 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
262 # Check encode/decode/read of lower/upper file handles after move to new merge testdir
263 test_file_handles $uppertestdir.up -o $tmp.upper_file_handles
264 test_file_handles $uppertestdir.lo -o $tmp.lower_file_handles
265 mv $uppertestdir.up/* $lowertestdir.up/
266 mv $uppertestdir.lo/* $lowertestdir.lo/
267 # Check open and read from stored file handles
268 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
269 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
272 # Check non-stale file handles of lower/upper renamed dirs
274 create_test_files $upperdir -w
275 create_test_files $lowerdir -w
276 create_test_files $upperdir/subdir -w
277 create_test_files $lowerdir/subdir -w
279 # Check encode/decode/read of lower/upper file handles after rename of testdir
280 test_file_handles $uppertestdir -p -o $tmp.upper_file_handles
281 test_file_handles $lowertestdir -p -o $tmp.lower_file_handles
282 # Check encode/decode/read of lower/upper file handles after rename of testdir's parent
283 test_file_handles $uppertestdir/subdir -p -o $tmp.upper_subdir_file_handles
284 test_file_handles $lowertestdir/subdir -p -o $tmp.lower_subdir_file_handles
285 # Rename pure upper dir
286 mv $uppertestdir $uppertestdir.new/
287 # Copy up lower dir, index and rename
288 mv $lowertestdir $lowertestdir.new/
289 # Check open, read and readdir from stored file handles
290 # (testdir argument is the mount point and NOT the dir
291 # we are trying to open by stored file handle)
292 test_file_handles $mnt2 -rp -i $tmp.upper_file_handles
293 test_file_handles $mnt2 -rp -i $tmp.lower_file_handles
294 test_file_handles $mnt2 -rp -i $tmp.upper_subdir_file_handles
295 test_file_handles $mnt2 -rp -i $tmp.lower_subdir_file_handles
296 # Retry decoding lower subdir file handle when indexed testdir is in dcache
297 # (providing renamed testdir argument pins the indexed testdir to dcache)
298 test_file_handles $lowertestdir.new -rp -i $tmp.lower_subdir_file_handles