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 non-samefs.
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 $mnt2 2>/dev/null
39 # get standard environment, filters and checks
43 # real QA test starts here
47 _require_scratch_nocheck
48 # _require_exportfs already requires open_by_handle, but let's not count on it
49 _require_test_program "open_by_handle"
50 # We need to require all features together, because nfs_export cannot
51 # be enabled when index is disabled
52 _require_scratch_overlay_features index nfs_export redirect_dir
54 # Lower overlay lower layer is on test fs, upper is on scratch fs
55 lower=$OVL_BASE_TEST_DIR/$OVL_LOWER-$seq
56 upper=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
57 work=$OVL_BASE_SCRATCH_MNT/$OVL_WORK
59 # Lower dir of nested overlay is the scratch overlay mount at SCRATCH_MNT
60 upper2=$OVL_BASE_TEST_DIR/$OVL_UPPER.2
61 work2=$OVL_BASE_TEST_DIR/$OVL_WORK.2
62 mnt2=$OVL_BASE_TEST_DIR/$OVL_MNT.2
64 lowerdir=$lower/lowertestdir
65 upperdir=$upper/uppertestdir
66 lowertestdir=$mnt2/lowertestdir
67 uppertestdir=$mnt2/uppertestdir
70 # Create test dir and empty test files
76 $here/src/open_by_handle -cp $opt $dir $NUMFILES
79 # Test encode/decode file handles on overlay mount
85 echo test_file_handles $dir $* | _filter_test_dir | _filter_ovl_dirs | \
87 $here/src/open_by_handle $* $dir $NUMFILES
90 # Re-create lower/upper/work dirs
93 # Create the underlying overlay dirs
96 # Re-create the nested overlay upper dirs
97 rm -rf $lower $upper2 $work2 $mnt2
98 mkdir $lower $upper2 $work2 $mnt2
101 # Mount a nested overlay with $SCRATCH_MNT as lower layer
104 # Mount the underlying non-samefs overlay
105 _overlay_mount_dirs $lower $upper $work overlay1 $SCRATCH_MNT \
106 -o "index=on,nfs_export=on,redirect_dir=on"
108 # Mount the nested overlay
109 _overlay_mount_dirs $SCRATCH_MNT $upper2 $work2 overlay2 $mnt2 \
110 -o "index=on,nfs_export=on,redirect_dir=on" 2>/dev/null ||
111 _notrun "cannot mount nested overlay with nfs_export=on option"
112 _check_overlay_feature nfs_export overlay2 $mnt2
115 # Unmount the nested overlay mount and check underlying overlay layers
118 # unmount & check nested overlay
120 _overlay_check_dirs $SCRATCH_MNT $upper2 $work2 \
121 -o "index=on,nfs_export=on,redirect_dir=on"
123 # unmount & check underlying overlay
124 $UMOUNT_PROG $SCRATCH_MNT
125 _overlay_check_dirs $lower $upper $work \
126 -o "index=on,nfs_export=on,redirect_dir=on"
129 # Check non-stale file handles of lower/upper files and verify
130 # that handle decoded before copy up is encoded to upper after
131 # copy up. Verify reading data from file open by file handle
132 # and verify access_at() with dirfd open by file handle.
134 create_test_files $upperdir
135 create_test_files $lowerdir
137 # Check encode/decode of upper regular file handles
138 test_file_handles $uppertestdir
139 # Check encode/decode of upper dir file handle
140 test_file_handles $uppertestdir -p
141 # Check encode/write/decode/read/write of upper file handles
142 test_file_handles $uppertestdir -wrap
143 # Check encode/decode of lower regular file handles before copy up
144 test_file_handles $lowertestdir
145 # Check encode/decode of lower dir file handles before copy up
146 test_file_handles $lowertestdir -p
147 # Check encode/write/decode/read/write of lower file handles across copy up
148 test_file_handles $lowertestdir -wrap
151 # Check copy up after encode/decode of lower/upper files
152 # (copy up of disconnected dentry to index dir)
154 create_test_files $upperdir
155 create_test_files $lowerdir
157 # Check encode/decode/write/read of upper regular file handles
158 test_file_handles $uppertestdir -a
159 test_file_handles $uppertestdir -r
160 # Check encode/decode/write/read of lower regular file handles
161 test_file_handles $lowertestdir -a
162 test_file_handles $lowertestdir -r
165 # Check non-stale handles to unlinked but open lower/upper files
167 create_test_files $upperdir
168 create_test_files $upperdir.rw
169 create_test_files $lowerdir
170 create_test_files $lowerdir.rw
172 test_file_handles $uppertestdir -dk
173 # Check encode/write/unlink/decode/read of upper regular file handles
174 test_file_handles $uppertestdir.rw -rwdk
175 test_file_handles $lowertestdir -dk
176 # Check encode/write/unlink/decode/read of lower file handles across copy up
177 test_file_handles $lowertestdir.rw -rwdk
180 # Check stale handles of unlinked lower/upper files (nlink = 1,0)
182 create_test_files $upperdir
183 create_test_files $lowerdir
185 # Check decode of upper file handles after unlink/rmdir (nlink == 0)
186 test_file_handles $uppertestdir -dp
187 # Check decode of lower file handles after unlink/rmdir (nlink == 0)
188 test_file_handles $lowertestdir -dp
191 # Check non-stale file handles of linked lower/upper files (nlink = 1,2,1)
193 create_test_files $upperdir
194 create_test_files $lowerdir
196 # Check encode/decode of upper file handles (nlink == 1)
197 test_file_handles $uppertestdir
198 # Check decode/read of upper file handles after link (nlink == 2)
199 test_file_handles $uppertestdir -wlr
200 # Check decode/read of upper file handles after link + unlink (nlink == 1)
201 test_file_handles $uppertestdir -ur
202 # Check encode/decode of lower file handles before copy up (nlink == 1)
203 test_file_handles $lowertestdir
204 # Check decode/read of lower file handles after copy up + link (nlink == 2)
205 test_file_handles $lowertestdir -wlr
206 # Check decode/read of lower file handles after copy up + link + unlink (nlink == 1)
207 test_file_handles $lowertestdir -ur
210 # Check non-stale file handles of linked lower/upper hardlinks (nlink = 2,1)
212 create_test_files $upperdir
213 create_test_files $lowerdir
214 # Create lower/upper hardlinks
215 test_file_handles $lowerdir -l >/dev/null
216 test_file_handles $upperdir -l >/dev/null
218 # Check encode/decode of upper hardlink file handles (nlink == 2)
219 test_file_handles $uppertestdir
220 # Check decode/read of upper hardlink file handles after unlink (nlink == 1)
221 test_file_handles $uppertestdir -wur
222 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
223 test_file_handles $lowertestdir
224 # Check decode/read of lower hardlink file handles after copy up + unlink (nlink == 1)
225 test_file_handles $lowertestdir -wur
228 # Check stale file handles of unlinked lower/upper hardlinks (nlink = 2,0)
230 create_test_files $upperdir
231 create_test_files $lowerdir
232 # Create lower/upper hardlinks
233 test_file_handles $lowerdir -l >/dev/null
234 test_file_handles $upperdir -l >/dev/null
236 # Check encode/decode of upper hardlink file handles (nlink == 2)
237 test_file_handles $uppertestdir
238 # Check decode of upper hardlink file handles after 2*unlink (nlink == 0)
239 test_file_handles $uppertestdir -d
240 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
241 test_file_handles $lowertestdir
242 # Check decode of lower hardlink file handles after copy up + 2*unlink (nlink == 0)
243 test_file_handles $lowertestdir -d
246 # Check non-stale file handles of lower/upper renamed files
248 create_test_files $upperdir
249 create_test_files $lowerdir
251 # Check decode/read of upper file handles after rename in same upper parent
252 test_file_handles $uppertestdir -wmr
253 # Check decode/read of lower file handles after copy up + rename in same merge parent
254 test_file_handles $lowertestdir -wmr
257 # Check non-stale file handles of lower/upper moved files
259 create_test_files $upperdir -w
260 create_test_files $lowerdir -w
261 mkdir -p $lowerdir.lo $lowerdir.up $upperdir.lo $upperdir.up
263 # Check encode/decode/read of lower/upper file handles after move to new upper testdir
264 test_file_handles $uppertestdir -o $tmp.upper_file_handles
265 test_file_handles $lowertestdir -o $tmp.lower_file_handles
266 mv $uppertestdir/* $uppertestdir.up/
267 mv $lowertestdir/* $uppertestdir.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
271 # Check encode/decode/read of lower/upper file handles after move to new merge testdir
272 test_file_handles $uppertestdir.up -o $tmp.upper_file_handles
273 test_file_handles $uppertestdir.lo -o $tmp.lower_file_handles
274 mv $uppertestdir.up/* $lowertestdir.up/
275 mv $uppertestdir.lo/* $lowertestdir.lo/
276 # Check open and read from stored file handles
277 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
278 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
281 # Check non-stale file handles of lower/upper renamed dirs
283 create_test_files $upperdir -w
284 create_test_files $lowerdir -w
285 create_test_files $upperdir/subdir -w
286 create_test_files $lowerdir/subdir -w
288 # Check encode/decode/read of lower/upper file handles after rename of testdir
289 test_file_handles $uppertestdir -p -o $tmp.upper_file_handles
290 test_file_handles $lowertestdir -p -o $tmp.lower_file_handles
291 # Check encode/decode/read of lower/upper file handles after rename of testdir's parent
292 test_file_handles $uppertestdir/subdir -p -o $tmp.upper_subdir_file_handles
293 test_file_handles $lowertestdir/subdir -p -o $tmp.lower_subdir_file_handles
294 # Rename pure upper dir
295 mv $uppertestdir $uppertestdir.new/
296 # Copy up lower dir, index and rename
297 mv $lowertestdir $lowertestdir.new/
298 # Check open, read and readdir from stored file handles
299 # (testdir argument is the mount point and NOT the dir
300 # we are trying to open by stored file handle)
301 test_file_handles $mnt2 -rp -i $tmp.upper_file_handles
302 test_file_handles $mnt2 -rp -i $tmp.lower_file_handles
303 test_file_handles $mnt2 -rp -i $tmp.upper_subdir_file_handles
304 test_file_handles $mnt2 -rp -i $tmp.lower_subdir_file_handles
305 # Retry decoding lower subdir file handle when indexed testdir is in dcache
306 # (providing renamed testdir argument pins the indexed testdir to dcache)
307 test_file_handles $lowertestdir.new -rp -i $tmp.lower_subdir_file_handles