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 _check_overlay_feature nfs_export overlay2 $mnt2
108 # Unmount the nested overlay mount and check underlying overlay layers
111 # unmount & check nested overlay
113 _overlay_check_dirs $SCRATCH_MNT $upper2 $work2 \
114 -o "index=on,nfs_export=on,redirect_dir=on"
116 # unmount & check underlying overlay
121 # Check non-stale file handles of lower/upper files and verify
122 # that handle decoded before copy up is encoded to upper after
123 # copy up. Verify reading data from file open by file handle
124 # and verify access_at() with dirfd open by file handle.
126 create_test_files $upperdir
127 create_test_files $lowerdir
129 # Check encode/decode of upper regular file handles
130 test_file_handles $uppertestdir
131 # Check encode/decode of upper dir file handle
132 test_file_handles $uppertestdir -p
133 # Check encode/write/decode/read/write of upper file handles
134 test_file_handles $uppertestdir -wrap
135 # Check encode/decode of lower regular file handles before copy up
136 test_file_handles $lowertestdir
137 # Check encode/decode of lower dir file handles before copy up
138 test_file_handles $lowertestdir -p
139 # Check encode/write/decode/read/write of lower file handles across copy up
140 test_file_handles $lowertestdir -wrap
143 # Check copy up after encode/decode of lower/upper files
144 # (copy up of disconnected dentry to index dir)
146 create_test_files $upperdir
147 create_test_files $lowerdir
149 # Check encode/decode/write/read of upper regular file handles
150 test_file_handles $uppertestdir -a
151 test_file_handles $uppertestdir -r
152 # Check encode/decode/write/read of lower regular file handles
153 test_file_handles $lowertestdir -a
154 test_file_handles $lowertestdir -r
157 # Check non-stale handles to unlinked but open lower/upper files
159 create_test_files $upperdir
160 create_test_files $upperdir.rw
161 create_test_files $lowerdir
162 create_test_files $lowerdir.rw
164 test_file_handles $uppertestdir -dk
165 # Check encode/write/unlink/decode/read of upper regular file handles
166 test_file_handles $uppertestdir.rw -rwdk
167 test_file_handles $lowertestdir -dk
168 # Check encode/write/unlink/decode/read of lower file handles across copy up
169 test_file_handles $lowertestdir.rw -rwdk
172 # Check stale handles of unlinked lower/upper files (nlink = 1,0)
174 create_test_files $upperdir
175 create_test_files $lowerdir
177 # Check decode of upper file handles after unlink/rmdir (nlink == 0)
178 test_file_handles $uppertestdir -dp
179 # Check decode of lower file handles after unlink/rmdir (nlink == 0)
180 test_file_handles $lowertestdir -dp
183 # Check non-stale file handles of linked lower/upper files (nlink = 1,2,1)
185 create_test_files $upperdir
186 create_test_files $lowerdir
188 # Check encode/decode of upper file handles (nlink == 1)
189 test_file_handles $uppertestdir
190 # Check decode/read of upper file handles after link (nlink == 2)
191 test_file_handles $uppertestdir -wlr
192 # Check decode/read of upper file handles after link + unlink (nlink == 1)
193 test_file_handles $uppertestdir -ur
194 # Check encode/decode of lower file handles before copy up (nlink == 1)
195 test_file_handles $lowertestdir
196 # Check decode/read of lower file handles after copy up + link (nlink == 2)
197 test_file_handles $lowertestdir -wlr
198 # Check decode/read of lower file handles after copy up + link + unlink (nlink == 1)
199 test_file_handles $lowertestdir -ur
202 # Check non-stale file handles of linked lower/upper hardlinks (nlink = 2,1)
204 create_test_files $upperdir
205 create_test_files $lowerdir
206 # Create lower/upper hardlinks
207 test_file_handles $lowerdir -l >/dev/null
208 test_file_handles $upperdir -l >/dev/null
210 # Check encode/decode of upper hardlink file handles (nlink == 2)
211 test_file_handles $uppertestdir
212 # Check decode/read of upper hardlink file handles after unlink (nlink == 1)
213 test_file_handles $uppertestdir -wur
214 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
215 test_file_handles $lowertestdir
216 # Check decode/read of lower hardlink file handles after copy up + unlink (nlink == 1)
217 test_file_handles $lowertestdir -wur
220 # Check stale file handles of unlinked lower/upper hardlinks (nlink = 2,0)
222 create_test_files $upperdir
223 create_test_files $lowerdir
224 # Create lower/upper hardlinks
225 test_file_handles $lowerdir -l >/dev/null
226 test_file_handles $upperdir -l >/dev/null
228 # Check encode/decode of upper hardlink file handles (nlink == 2)
229 test_file_handles $uppertestdir
230 # Check decode of upper hardlink file handles after 2*unlink (nlink == 0)
231 test_file_handles $uppertestdir -d
232 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
233 test_file_handles $lowertestdir
234 # Check decode of lower hardlink file handles after copy up + 2*unlink (nlink == 0)
235 test_file_handles $lowertestdir -d
238 # Check non-stale file handles of lower/upper renamed files
240 create_test_files $upperdir
241 create_test_files $lowerdir
243 # Check decode/read of upper file handles after rename in same upper parent
244 test_file_handles $uppertestdir -wmr
245 # Check decode/read of lower file handles after copy up + rename in same merge parent
246 test_file_handles $lowertestdir -wmr
249 # Check non-stale file handles of lower/upper moved files
251 create_test_files $upperdir -w
252 create_test_files $lowerdir -w
253 mkdir -p $lowerdir.lo $lowerdir.up $upperdir.lo $upperdir.up
255 # Check encode/decode/read of lower/upper file handles after move to new upper testdir
256 test_file_handles $uppertestdir -o $tmp.upper_file_handles
257 test_file_handles $lowertestdir -o $tmp.lower_file_handles
258 mv $uppertestdir/* $uppertestdir.up/
259 mv $lowertestdir/* $uppertestdir.lo/
260 # Check open and read from stored file handles
261 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
262 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
263 # Check encode/decode/read of lower/upper file handles after move to new merge testdir
264 test_file_handles $uppertestdir.up -o $tmp.upper_file_handles
265 test_file_handles $uppertestdir.lo -o $tmp.lower_file_handles
266 mv $uppertestdir.up/* $lowertestdir.up/
267 mv $uppertestdir.lo/* $lowertestdir.lo/
268 # Check open and read from stored file handles
269 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
270 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
273 # Check non-stale file handles of lower/upper renamed dirs
275 create_test_files $upperdir -w
276 create_test_files $lowerdir -w
277 create_test_files $upperdir/subdir -w
278 create_test_files $lowerdir/subdir -w
280 # Check encode/decode/read of lower/upper file handles after rename of testdir
281 test_file_handles $uppertestdir -p -o $tmp.upper_file_handles
282 test_file_handles $lowertestdir -p -o $tmp.lower_file_handles
283 # Check encode/decode/read of lower/upper file handles after rename of testdir's parent
284 test_file_handles $uppertestdir/subdir -p -o $tmp.upper_subdir_file_handles
285 test_file_handles $lowertestdir/subdir -p -o $tmp.lower_subdir_file_handles
286 # Rename pure upper dir
287 mv $uppertestdir $uppertestdir.new/
288 # Copy up lower dir, index and rename
289 mv $lowertestdir $lowertestdir.new/
290 # Check open, read and readdir from stored file handles
291 # (testdir argument is the mount point and NOT the dir
292 # we are trying to open by stored file handle)
293 test_file_handles $mnt2 -rp -i $tmp.upper_file_handles
294 test_file_handles $mnt2 -rp -i $tmp.lower_file_handles
295 test_file_handles $mnt2 -rp -i $tmp.upper_subdir_file_handles
296 test_file_handles $mnt2 -rp -i $tmp.lower_subdir_file_handles
297 # Retry decoding lower subdir file handle when indexed testdir is in dcache
298 # (providing renamed testdir argument pins the indexed testdir to dcache)
299 test_file_handles $lowertestdir.new -rp -i $tmp.lower_subdir_file_handles