Adding upstream version 9.4.upstream/9.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 116 insertions, 0 deletions

diff --git a/tests/cp/sparse-extents-2.sh b/tests/cp/sparse-extents-2.sh
new file mode 100755
index 0000000..575dbbf
--- /dev/null
+++ b/tests/cp/sparse-extents-2.sh
@@ -0,0 +1,116 @@
+#!/bin/sh
+# Test cp --sparse=always through SEEK_DATA copy
+
+# Copyright (C) 2010-2023 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ cp
+require_perl_
+
+# The test was seen to fail on ext3 so exclude that type
+# (or any file system where the type can't be determined)
+touch sparse_chk
+if seek_data_capable_ sparse_chk && ! df -t ext3 . >/dev/null; then
+  : # Current partition has working extents.  Good!
+else
+  skip_ "insufficient SEEK_DATA support"
+
+  # It's not;  we need to create one, hence we need root access.
+  require_root_
+
+  cwd=$PWD
+  cleanup_() { cd /; umount "$cwd/mnt"; }
+
+  skip=0
+  # Create an ext4 loopback file system
+  dd if=/dev/zero of=blob bs=32k count=1000 || skip=1
+  mkdir mnt
+  mkfs -t ext4 -F blob ||
+    skip_ "failed to create ext4 file system"
+  mount -oloop blob mnt   || skip=1
+  cd mnt                  || skip=1
+  echo test > f           || skip=1
+  test -s f               || skip=1
+
+  test $skip = 1 &&
+    skip_ "insufficient mount/ext4 support"
+fi
+
+# =================================================
+# The data below was set up to ensure that the original FIEMAP-copying code
+# was exercised enough to provoke at least two iterations of the do...while loop
+# in which it calls ioctl (fd, FS_IOC_FIEMAP,...
+# This also verifies that non-trivial extents are preserved.
+
+# Extract logical block number and length pairs from filefrag -v output.
+# The initial sed is to remove the "eof" from the normally-empty "flags" field.
+# Similarly, remove flags values like "unknown,delalloc,eof".
+# That is required when that final extent has no number in the "expected" field.
+f()
+{
+  sed 's/ [a-z,][a-z,]*$//' $@ \
+    | $AWK '/^ *[0-9]/ {printf "%d %d ", $2, (NF>=6 ? $6 : (NF<5 ? $NF : $5)) }
+            END {print ""}'
+}
+
+for i in $(seq 1 2 21); do
+  for j in 1 2 31 100; do
+    $PERL -e '$n = '$i' * 1024; *F = *STDOUT;' \
+          -e 'for (1..'$j') { sysseek (*F, $n, 1)' \
+          -e '&& syswrite (*F, chr($_)x$n) or die "$!"}' > j1 || fail=1
+
+    # Note there is an implicit sync performed by cp on Linux kernels
+    # before 2.6.39 to work around bugs in EXT4 and BTRFS.
+    # (this was removed in the release after coreutils-8.32).
+    # Note also the -s parameter to the filefrag commands below
+    # for the same reasons.
+    cp --reflink=never --sparse=always j1 j2 || fail=1
+
+    cmp j1 j2 || fail_ "data loss i=$i j=$j"
+    if ! filefrag -vs j1 | grep -F extent >/dev/null; then
+      test $skip != 1 && warn_ 'skipping part; you lack filefrag'
+      skip=1
+    else
+      # Here is sample filefrag output:
+      #   $ perl -e 'BEGIN{$n=16*1024; *F=*STDOUT}' \
+      #          -e 'for (1..5) { sysseek(*F,$n,1)' \
+      #          -e '&& syswrite *F,"."x$n or die "$!"}' > j
+      #   $ filefrag -v j
+      #   File system type is: ef53
+      #   File size of j is 163840 (40 blocks, blocksize 4096)
+      #    ext logical physical expected length flags
+      #      0       4  6258884               4
+      #      1      12  6258892  6258887      4
+      #      2      20  6258900  6258895      4
+      #      3      28  6258908  6258903      4
+      #      4      36  6258916  6258911      4 eof
+      #   j: 6 extents found
+
+      # exclude the physical block numbers; they always differ
+      filefrag -v j1 > ff1 || framework_failure_
+      filefrag -vs j2 > ff2 || framework_failure_
+      { f ff1; f ff2; } | $PERL $abs_srcdir/tests/filefrag-extent-compare \
+        || {
+             warn_ ignoring filefrag-reported extent map differences
+             # Show the differing extent maps.
+             head -n99 ff1 ff2
+           }
+    fi
+    test $fail = 1 && break 2
+  done
+done
+
+Exit $fail