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 $mnt2 2>/dev/null
39 # get standard environment, filters and checks
43 # real QA test starts here
48 _require_scratch_nocheck
49 # _require_exportfs already requires open_by_handle, but let's not count on it
50 _require_test_program "open_by_handle"
51 # We need to require all features together, because nfs_export cannot
52 # be enabled when index is disabled
53 _require_scratch_overlay_features index nfs_export redirect_dir
55 # Lower overlay lower layer is on test fs, upper is on scratch fs
56 lower=$OVL_BASE_TEST_MNT/$OVL_LOWER-$seq
57 upper=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
58 work=$OVL_BASE_SCRATCH_MNT/$OVL_WORK
60 # Lower dir of nested overlay is the scratch overlay mount at SCRATCH_MNT
61 upper2=$OVL_BASE_TEST_DIR/$OVL_UPPER.2
62 work2=$OVL_BASE_TEST_DIR/$OVL_WORK.2
63 mnt2=$OVL_BASE_TEST_DIR/$OVL_MNT.2
65 lowerdir=$lower/lowertestdir
66 upperdir=$upper/uppertestdir
67 lowertestdir=$mnt2/lowertestdir
68 uppertestdir=$mnt2/uppertestdir
71 # Create test dir and empty test files
77 $here/src/open_by_handle -cp $opt $dir $NUMFILES
80 # Test encode/decode file handles on overlay mount
86 echo test_file_handles $dir $* | _filter_test_dir | _filter_ovl_dirs | \
88 $here/src/open_by_handle $* $dir $NUMFILES
91 # Re-create lower/upper/work dirs
94 # Create the underlying overlay dirs
97 # Re-create the nested overlay upper dirs
98 rm -rf $lower $upper2 $work2 $mnt2
99 mkdir $lower $upper2 $work2 $mnt2
102 # Mount a nested overlay with $SCRATCH_MNT as lower layer
105 # Mount the underlying non-samefs overlay
106 _overlay_mount_dirs $lower $upper $work overlay1 $SCRATCH_MNT \
107 -o "index=on,nfs_export=on,redirect_dir=on"
109 # Mount the nested overlay
110 _overlay_mount_dirs $SCRATCH_MNT $upper2 $work2 overlay2 $mnt2 \
111 -o "index=on,nfs_export=on,redirect_dir=on" 2>/dev/null ||
112 _notrun "cannot mount nested overlay with nfs_export=on option"
113 _check_overlay_feature nfs_export overlay2 $mnt2
116 # Unmount the nested overlay mount and check underlying overlay layers
119 # unmount & check nested overlay
121 _overlay_check_dirs $SCRATCH_MNT $upper2 $work2 \
122 -o "index=on,nfs_export=on,redirect_dir=on"
124 # unmount & check underlying overlay
125 $UMOUNT_PROG $SCRATCH_MNT
126 _overlay_check_dirs $lower $upper $work \
127 -o "index=on,nfs_export=on,redirect_dir=on"
130 # Check non-stale file handles of lower/upper files and verify
131 # that handle decoded before copy up is encoded to upper after
132 # copy up. Verify reading data from file open by file handle
133 # and verify access_at() with dirfd open by file handle.
135 create_test_files $upperdir
136 create_test_files $lowerdir
138 # Check encode/decode of upper regular file handles
139 test_file_handles $uppertestdir
140 # Check encode/decode of upper dir file handle
141 test_file_handles $uppertestdir -p
142 # Check encode/write/decode/read/write of upper file handles
143 test_file_handles $uppertestdir -wrap
144 # Check encode/decode of lower regular file handles before copy up
145 test_file_handles $lowertestdir
146 # Check encode/decode of lower dir file handles before copy up
147 test_file_handles $lowertestdir -p
148 # Check encode/write/decode/read/write of lower file handles across copy up
149 test_file_handles $lowertestdir -wrap
152 # Check copy up after encode/decode of lower/upper files
153 # (copy up of disconnected dentry to index dir)
155 create_test_files $upperdir
156 create_test_files $lowerdir
158 # Check encode/decode/write/read of upper regular file handles
159 test_file_handles $uppertestdir -a
160 test_file_handles $uppertestdir -r
161 # Check encode/decode/write/read of lower regular file handles
162 test_file_handles $lowertestdir -a
163 test_file_handles $lowertestdir -r
166 # Check non-stale handles to unlinked but open lower/upper files
168 create_test_files $upperdir
169 create_test_files $upperdir.rw
170 create_test_files $lowerdir
171 create_test_files $lowerdir.rw
173 test_file_handles $uppertestdir -dk
174 # Check encode/write/unlink/decode/read of upper regular file handles
175 test_file_handles $uppertestdir.rw -rwdk
176 test_file_handles $lowertestdir -dk
177 # Check encode/write/unlink/decode/read of lower file handles across copy up
178 test_file_handles $lowertestdir.rw -rwdk
181 # Check stale handles of unlinked lower/upper files (nlink = 1,0)
183 create_test_files $upperdir
184 create_test_files $lowerdir
186 # Check decode of upper file handles after unlink/rmdir (nlink == 0)
187 test_file_handles $uppertestdir -dp
188 # Check decode of lower file handles after unlink/rmdir (nlink == 0)
189 test_file_handles $lowertestdir -dp
192 # Check non-stale file handles of linked lower/upper files (nlink = 1,2,1)
194 create_test_files $upperdir
195 create_test_files $lowerdir
197 # Check encode/decode of upper file handles (nlink == 1)
198 test_file_handles $uppertestdir
199 # Check decode/read of upper file handles after link (nlink == 2)
200 test_file_handles $uppertestdir -wlr
201 # Check decode/read of upper file handles after link + unlink (nlink == 1)
202 test_file_handles $uppertestdir -ur
203 # Check encode/decode of lower file handles before copy up (nlink == 1)
204 test_file_handles $lowertestdir
205 # Check decode/read of lower file handles after copy up + link (nlink == 2)
206 test_file_handles $lowertestdir -wlr
207 # Check decode/read of lower file handles after copy up + link + unlink (nlink == 1)
208 test_file_handles $lowertestdir -ur
211 # Check non-stale file handles of linked lower/upper hardlinks (nlink = 2,1)
213 create_test_files $upperdir
214 create_test_files $lowerdir
215 # Create lower/upper hardlinks
216 test_file_handles $lowerdir -l >/dev/null
217 test_file_handles $upperdir -l >/dev/null
219 # Check encode/decode of upper hardlink file handles (nlink == 2)
220 test_file_handles $uppertestdir
221 # Check decode/read of upper hardlink file handles after unlink (nlink == 1)
222 test_file_handles $uppertestdir -wur
223 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
224 test_file_handles $lowertestdir
225 # Check decode/read of lower hardlink file handles after copy up + unlink (nlink == 1)
226 test_file_handles $lowertestdir -wur
229 # Check stale file handles of unlinked lower/upper hardlinks (nlink = 2,0)
231 create_test_files $upperdir
232 create_test_files $lowerdir
233 # Create lower/upper hardlinks
234 test_file_handles $lowerdir -l >/dev/null
235 test_file_handles $upperdir -l >/dev/null
237 # Check encode/decode of upper hardlink file handles (nlink == 2)
238 test_file_handles $uppertestdir
239 # Check decode of upper hardlink file handles after 2*unlink (nlink == 0)
240 test_file_handles $uppertestdir -d
241 # Check encode/decode of lower hardlink file handles before copy up (nlink == 2)
242 test_file_handles $lowertestdir
243 # Check decode of lower hardlink file handles after copy up + 2*unlink (nlink == 0)
244 test_file_handles $lowertestdir -d
247 # Check non-stale file handles of lower/upper renamed files
249 create_test_files $upperdir
250 create_test_files $lowerdir
252 # Check decode/read of upper file handles after rename in same upper parent
253 test_file_handles $uppertestdir -wmr
254 # Check decode/read of lower file handles after copy up + rename in same merge parent
255 test_file_handles $lowertestdir -wmr
258 # Check non-stale file handles of lower/upper moved files
260 create_test_files $upperdir -w
261 create_test_files $lowerdir -w
262 mkdir -p $lowerdir.lo $lowerdir.up $upperdir.lo $upperdir.up
264 # Check encode/decode/read of lower/upper file handles after move to new upper testdir
265 test_file_handles $uppertestdir -o $tmp.upper_file_handles
266 test_file_handles $lowertestdir -o $tmp.lower_file_handles
267 mv $uppertestdir/* $uppertestdir.up/
268 mv $lowertestdir/* $uppertestdir.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
272 # Check encode/decode/read of lower/upper file handles after move to new merge testdir
273 test_file_handles $uppertestdir.up -o $tmp.upper_file_handles
274 test_file_handles $uppertestdir.lo -o $tmp.lower_file_handles
275 mv $uppertestdir.up/* $lowertestdir.up/
276 mv $uppertestdir.lo/* $lowertestdir.lo/
277 # Check open and read from stored file handles
278 test_file_handles $mnt2 -r -i $tmp.upper_file_handles
279 test_file_handles $mnt2 -r -i $tmp.lower_file_handles
282 # Check non-stale file handles of lower/upper renamed dirs
284 create_test_files $upperdir -w
285 create_test_files $lowerdir -w
286 create_test_files $upperdir/subdir -w
287 create_test_files $lowerdir/subdir -w
289 # Check encode/decode/read of lower/upper file handles after rename of testdir
290 test_file_handles $uppertestdir -p -o $tmp.upper_file_handles
291 test_file_handles $lowertestdir -p -o $tmp.lower_file_handles
292 # Check encode/decode/read of lower/upper file handles after rename of testdir's parent
293 test_file_handles $uppertestdir/subdir -p -o $tmp.upper_subdir_file_handles
294 test_file_handles $lowertestdir/subdir -p -o $tmp.lower_subdir_file_handles
295 # Rename pure upper dir
296 mv $uppertestdir $uppertestdir.new/
297 # Copy up lower dir, index and rename
298 mv $lowertestdir $lowertestdir.new/
299 # Check open, read and readdir from stored file handles
300 # (testdir argument is the mount point and NOT the dir
301 # we are trying to open by stored file handle)
302 test_file_handles $mnt2 -rp -i $tmp.upper_file_handles
303 test_file_handles $mnt2 -rp -i $tmp.lower_file_handles
304 test_file_handles $mnt2 -rp -i $tmp.upper_subdir_file_handles
305 test_file_handles $mnt2 -rp -i $tmp.lower_subdir_file_handles
306 # Retry decoding lower subdir file handle when indexed testdir is in dcache
307 # (providing renamed testdir argument pins the indexed testdir to dcache)
308 test_file_handles $lowertestdir.new -rp -i $tmp.lower_subdir_file_handles