X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=t%2Ftest-meta.sh;h=e3b79e39f2b109f786aa9829f5d09cda463ede4e;hb=442ea207e9f1077da4d2bdbb80f93fab5d75eea9;hp=a087b5393e4700f0a80b0babf93cb1f3a2cdfa24;hpb=70b391fb188b4acf3fa26425aebde2a824553430;p=bup.git

diff --git a/t/test-meta.sh b/t/test-meta.sh
index a087b53..e3b79e3 100755
--- a/t/test-meta.sh
+++ b/t/test-meta.sh
@@ -1,145 +1,780 @@
 #!/usr/bin/env bash
-. wvtest.sh
-set -e -o pipefail
+. wvtest-bup.sh || exit $?
+. t/lib.sh || exit $?
 
-TOP="$(pwd)"
-export BUP_DIR="$TOP/buptest.tmp"
+set -o pipefail
+
+root_status="$(t/root-status)" || exit $?
+
+TOP="$(WVPASS pwd)" || exit $?
+tmpdir="$(WVPASS wvmktempdir)" || exit $?
+export BUP_DIR="$tmpdir/bup"
+
+# Assume that mvmktempdir will always use the same dir.
+timestamp_resolutions="$(t/ns-timestamp-resolutions "$tmpdir/canary")" \
+    || exit $?
+atime_resolution="$(echo $timestamp_resolutions | WVPASS cut -d' ' -f 1)" \
+    || exit $?
+mtime_resolution="$(echo $timestamp_resolutions | WVPASS cut -d' ' -f 2)" \
+    || exit $?
+WVPASS rm "$tmpdir/canary"
 
 bup()
 {
     "$TOP/bup" "$@"
 }
 
-# Very simple metadata tests -- "make install" to a temp directory,
-# then check that bup meta can reproduce the metadata correctly
-# (according to coreutils stat) via create, extract, start-extract,
-# and finish-extract.  The current tests are crude, and this does not
-# test devices, varying users/groups, acls, attrs, etc.
-WVSTART "meta"
+hardlink-sets()
+{
+    "$TOP/t/hardlink-sets" "$@"
+}
 
-genstat()
+id-other-than()
 {
-  (
-    export PATH="${TOP}:${PATH}" # pick up bup
-    # Skip atime (test elsewhere) to avoid the observer effect.
-    find . | sort | xargs bup xstat --exclude-fields ctime,atime
-  )
+    "$TOP/t/id-other-than" "$@"
 }
 
-force-delete()
+# Very simple metadata tests -- create a test tree then check that bup
+# meta can reproduce the metadata correctly (according to bup xstat)
+# via create, extract, start-extract, and finish-extract.  The current
+# tests are crude, and this does not fully test devices, varying
+# users/groups, acls, attrs, etc.
+
+genstat()
 {
-  if test "$(whoami)" != root
-  then
-    rm -rf "$@"
-  else
-    # Go to greater lengths to deal with any test detritus.
-    for f in "$@"
-    do
-      test -e "$@" || continue
-      chattr -fR = "$@" || true
-      setfacl -Rb "$@"
-      rm -r "$@"
-    done
-  fi
+    (
+        export PATH="$TOP:$PATH" # pick up bup
+        # Skip atime (test elsewhere) to avoid the observer effect.
+        WVPASS find . | WVPASS sort \
+            | WVPASS xargs bup xstat \
+            --mtime-resolution "$mtime_resolution"ns \
+            --exclude-fields ctime,atime,size
+    )
 }
 
 test-src-create-extract()
 {
-  # Test bup meta create/extract for ./src -> ./src-restore.
-  # Also writes to ./src-stat and ./src-restore-stat.
-  (
-    (cd src && WVPASS genstat) > src-stat
-    WVPASS bup meta --create --recurse --file src.meta src
-    # Test extract.
-    force-delete src-restore
-    mkdir src-restore
-    cd src-restore
-    WVPASS bup meta --extract --file ../src.meta
-    WVPASS test -d src
-    (cd src && genstat >../../src-restore-stat) || WVFAIL
-    WVPASS diff -u5 ../src-stat ../src-restore-stat
-    # Test start/finish extract.
-    force-delete src
-    WVPASS bup meta --start-extract --file ../src.meta
-    WVPASS test -d src
-    WVPASS bup meta --finish-extract --file ../src.meta
-    (cd src && genstat >../../src-restore-stat) || WVFAIL
-    WVPASS diff -u5 ../src-stat ../src-restore-stat
-  )
+    # Test bup meta create/extract for ./src -> ./src-restore.
+    # Also writes to ./src-stat and ./src-restore-stat.
+    (
+        (WVPASS cd src; WVPASS genstat) > src-stat || exit $?
+        WVPASS bup meta --create --recurse --file src.meta src
+        # Test extract.
+        WVPASS force-delete src-restore
+        WVPASS mkdir src-restore
+        WVPASS cd src-restore
+        WVPASS bup meta --extract --file ../src.meta
+        WVPASS test -d src
+        (WVPASS cd src; WVPASS genstat >../../src-restore-stat) || exit $?
+        WVPASS diff -U5 ../src-stat ../src-restore-stat
+        # Test start/finish extract.
+        WVPASS force-delete src
+        WVPASS bup meta --start-extract --file ../src.meta
+        WVPASS test -d src
+        WVPASS bup meta --finish-extract --file ../src.meta
+        (WVPASS cd src; WVPASS genstat >../../src-restore-stat) || exit $?
+        WVPASS diff -U5 ../src-stat ../src-restore-stat
+    )
 }
 
-if test "$(whoami)" == root
-then
-  umount "${TOP}/bupmeta.tmp/testfs" || true
-fi
+test-src-save-restore()
+{
+    # Test bup save/restore metadata for ./src -> ./src-restore.  Also
+    # writes to BUP_DIR.  Note that for now this just tests the
+    # restore below src/, in order to avoid having to worry about
+    # operations that require root (like chown /home).
+    (
+        WVPASS rm -rf "$BUP_DIR"
+        WVPASS bup init
+        WVPASS bup index src
+        WVPASS bup save -t -n src src
+        # Test extract.
+        WVPASS force-delete src-restore
+        WVPASS mkdir src-restore
+        WVPASS bup restore -C src-restore "/src/latest$(pwd)/"
+        WVPASS test -d src-restore/src
+        WVPASS "$TOP/t/compare-trees" -c src/ src-restore/src/
+        WVPASS rm -rf src.bup
+    )
+}
 
-force-delete "${BUP_DIR}"
-force-delete "${TOP}/bupmeta.tmp"
+setup-test-tree()
+{
+    WVPASS "$TOP/t/sync-tree" "$TOP/t/sampledata/" "$tmpdir/src/"
 
-# Create a test tree.
-(
-  mkdir -p "${TOP}/bupmeta.tmp"
-  make DESTDIR="${TOP}/bupmeta.tmp/src" install
-  mkdir "${TOP}/bupmeta.tmp/src/misc"
-  cp -a cmd/bup-* "${TOP}/bupmeta.tmp/src/misc/"
-) || WVFAIL
+    # Add some hard links for the general tests.
+    (
+        WVPASS cd "$tmpdir"/src
+        WVPASS touch hardlink-target
+        WVPASS ln hardlink-target hardlink-1
+        WVPASS ln hardlink-target hardlink-2
+        WVPASS ln hardlink-target hardlink-3
+    ) || exit $?
+
+    # Add some trivial files for the index, modify, save tests.
+    (
+        WVPASS cd "$tmpdir"/src
+        WVPASS mkdir volatile
+        WVPASS touch volatile/{1,2,3}
+    ) || exit $?
+
+    # Regression test for metadata sort order.  Previously, these two
+    # entries would sort in the wrong order because the metadata
+    # entries were being sorted by mangled name, but the index isn't.
+    WVPASS dd if=/dev/zero of="$tmpdir"/src/foo bs=1k count=33
+    WVPASS touch -t 201111111111 "$tmpdir"/src/foo
+    WVPASS touch -t 201112121111 "$tmpdir"/src/foo-bar
+
+    t/mksock "$tmpdir"/src/test-socket || true
+}
 
 # Use the test tree to check bup meta.
+WVSTART 'meta --create/--extract'
+(
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?
+    export BUP_DIR="$tmpdir/bup"
+    WVPASS setup-test-tree
+    WVPASS cd "$tmpdir"
+    WVPASS test-src-create-extract
+
+    # Test a top-level file (not dir).
+    WVPASS touch src-file
+    WVPASS bup meta -cf src-file.meta src-file
+    WVPASS mkdir dest
+    WVPASS cd dest
+    WVPASS bup meta -xf ../src-file.meta
+    WVPASS rm -r "$tmpdir"
+) || exit $?
+
+# Use the test tree to check bup save/restore metadata.
+WVSTART 'metadata save/restore (general)'
 (
-  cd "${TOP}/bupmeta.tmp"
-  test-src-create-extract
-)
-
-# Root-only tests: ACLs, Linux attr, Linux xattr, etc.
-if test "$(whoami)" == root
-then
-  (
-    cleanup_at_exit()
-    {
-      cd "${TOP}"
-      umount "${TOP}/bupmeta.tmp/testfs" || true
-    }
-
-    trap cleanup_at_exit EXIT
-
-    WVPASS cd "${TOP}/bupmeta.tmp"
-    umount testfs || true
-    dd if=/dev/zero of=test-fs.img bs=1M count=32
-    mke2fs -F -j -m 0 test-fs.img
-    mkdir testfs
-    mount -o loop,acl,user_xattr test-fs.img testfs
-    # Hide, so that tests can't create risks.
-    chown root:root testfs
-    chmod 0700 testfs
-
-    cp -a src testfs/src
-    (cd testfs && test-src-create-extract)
-
-    # Test Linux attr.
-    force-delete testfs/src
-    mkdir testfs/src
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?
+    export BUP_DIR="$tmpdir/bup"
+    WVPASS setup-test-tree
+    WVPASS cd "$tmpdir"
+    WVPASS test-src-save-restore
+
+    # Test a deeper subdir/ to make sure top-level non-dir metadata is
+    # restored correctly.  We need at least one dir and one non-dir at
+    # the "top-level".
+    WVPASS test -d src/var/cmd
+    WVPASS test -f src/var/cmd/save-cmd.py
+    WVPASS rm -rf "$BUP_DIR"
+    WVPASS bup init
+    WVPASS touch -t 201111111111 src-restore # Make sure the top won't match.
+    WVPASS bup index src
+    WVPASS bup save -t -n src src
+    WVPASS force-delete src-restore
+    WVPASS bup restore -C src-restore "/src/latest$(pwd)/src/var/."
+    WVPASS touch -t 201211111111 src-restore # Make sure the top won't match.
+    # Check that the only difference is the top dir.
+    WVFAIL $TOP/t/compare-trees -c src/var/ src-restore/ > tmp-compare-trees
+    WVPASSEQ $(cat tmp-compare-trees | wc -l) 1
+    # The number of rsync status characters varies, so accept any
+    # number of trailing dots.  For example OS X native rsync produces
+    # 9, but Homebrew's produces 12, while on other platforms, 11 is
+    # common.
+    expected_diff_rx='^\.d\.\.t\.\.\.(\.)+ \./$'
+    if ! grep -qE "$expected_diff_rx" tmp-compare-trees; then
+        echo -n 'tmp-compare-trees: ' 1>&2
+        cat tmp-compare-trees 1>&2
+    fi
+    WVPASS grep -qE "$expected_diff_rx" tmp-compare-trees
+    WVPASS rm -r "$tmpdir"
+) || exit $?
+
+# Test that we pull the index (not filesystem) metadata for any
+# unchanged files whenever we're saving other files in a given
+# directory.
+WVSTART 'metadata save/restore (using index metadata)'
+(
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?
+    export BUP_DIR="$tmpdir/bup"
+    WVPASS setup-test-tree
+    WVPASS cd "$tmpdir"
+
+    # ...for now -- might be a problem with hardlink restores that was
+    # causing noise wrt this test.
+    WVPASS rm -rf src/hardlink*
+
+    # Pause here to keep the filesystem changes far enough away from
+    # the first index run that bup won't cap their index timestamps
+    # (see "bup help index" for more information).  Without this
+    # sleep, the compare-trees test below "Bup should *not* pick up
+    # these metadata..." may fail.
+    WVPASS sleep 1
+
+    WVPASS rm -rf "$BUP_DIR"
+    WVPASS bup init
+    WVPASS bup index src
+    WVPASS bup save -t -n src src
+
+    WVPASS force-delete src-restore-1
+    WVPASS mkdir src-restore-1
+    WVPASS bup restore -C src-restore-1 "/src/latest$(pwd)/"
+    WVPASS test -d src-restore-1/src
+    WVPASS "$TOP/t/compare-trees" -c src/ src-restore-1/src/
+
+    WVPASS echo "blarg" > src/volatile/1
+    WVPASS cp -pP src/volatile/1 src-restore-1/src/volatile/
+    WVPASS bup index src
+
+    # Bup should *not* pick up these metadata changes.
+    WVPASS touch src/volatile/2
+
+    WVPASS bup save -t -n src src
+
+    WVPASS force-delete src-restore-2
+    WVPASS mkdir src-restore-2
+    WVPASS bup restore -C src-restore-2 "/src/latest$(pwd)/"
+    WVPASS test -d src-restore-2/src
+    WVPASS "$TOP/t/compare-trees" -c src-restore-1/src/ src-restore-2/src/
+
+    WVPASS rm -r "$tmpdir"
+
+) || exit $?
+
+
+setup-hardlink-test()
+{
+    WVPASS rm -rf "$tmpdir/src" "$BUP_DIR"
+    WVPASS bup init
+    WVPASS mkdir "$tmpdir/src"
+}
+
+hardlink-test-run-restore()
+{
+    WVPASS force-delete src-restore
+    WVPASS mkdir src-restore
+    WVPASS bup restore -C src-restore "/src/latest$(pwd)/"
+    WVPASS test -d src-restore/src
+}
+
+# Test hardlinks more carefully.
+WVSTART 'metadata save/restore (hardlinks)'
+(
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?    
+    export BUP_DIR="$tmpdir/bup"
+
+    WVPASS setup-hardlink-test
+    WVPASS cd "$tmpdir"
+    
+    # Test trivial case - single hardlink.
     (
-      touch testfs/src/foo
-      mkdir testfs/src/bar
-      chattr +acdeijstuADST testfs/src/foo
-      chattr +acdeijstuADST testfs/src/bar
-      (cd testfs && test-src-create-extract)
-    )
+        WVPASS cd src
+        WVPASS touch hardlink-target
+        WVPASS ln hardlink-target hardlink-1
+    ) || exit $?
+    WVPASS bup index src
+    WVPASS bup save -t -n src src
+    WVPASS hardlink-test-run-restore
+    WVPASS "$TOP/t/compare-trees" -c src/ src-restore/src/
 
-    # Test Linux xattr.
-    force-delete testfs/src
-    mkdir testfs/src
+    # Test the case where the hardlink hasn't changed, but the tree
+    # needs to be saved again. i.e. the save-cmd.py "if hashvalid:"
+    # case.
     (
-      touch testfs/src/foo
-      mkdir testfs/src/bar
-      attr -s foo -V bar testfs/src/foo
-      attr -s foo -V bar testfs/src/bar
-      (cd testfs && test-src-create-extract)
-    )
-  )
-fi
+        WVPASS cd src
+        WVPASS echo whatever > something-new
+    ) || exit $?
+    WVPASS bup index src
+    WVPASS bup save -t -n src src
+    WVPASS hardlink-test-run-restore
+    WVPASS "$TOP/t/compare-trees" -c src/ src-restore/src/
+
+    # Test hardlink changes between index runs.
+    #
+    WVPASS setup-hardlink-test
+    WVPASS cd src
+    WVPASS touch hardlink-target-a
+    WVPASS touch hardlink-target-b
+    WVPASS ln hardlink-target-a hardlink-b-1
+    WVPASS ln hardlink-target-a hardlink-a-1
+    WVPASS cd ..
+    WVPASS bup index -vv src
+    WVPASS rm src/hardlink-b-1
+    WVPASS ln src/hardlink-target-b src/hardlink-b-1
+    WVPASS bup index -vv src
+    WVPASS bup save -t -n src src
+    WVPASS hardlink-test-run-restore
+    WVPASS echo ./src/hardlink-a-1 > hardlink-sets.expected
+    WVPASS echo ./src/hardlink-target-a >> hardlink-sets.expected
+    WVPASS echo >> hardlink-sets.expected
+    WVPASS echo ./src/hardlink-b-1 >> hardlink-sets.expected
+    WVPASS echo ./src/hardlink-target-b >> hardlink-sets.expected
+    (WVPASS cd src-restore; WVPASS hardlink-sets .) > hardlink-sets.restored \
+        || exit $?
+    WVPASS diff -u hardlink-sets.expected hardlink-sets.restored
+
+    # Test hardlink changes between index and save -- hardlink set [a
+    # b c d] changes to [a b] [c d].  At least right now bup should
+    # notice and recreate the latter.
+    WVPASS setup-hardlink-test
+    WVPASS cd "$tmpdir"/src
+    WVPASS touch a
+    WVPASS ln a b
+    WVPASS ln a c
+    WVPASS ln a d
+    WVPASS cd ..
+    WVPASS bup index -vv src
+    WVPASS rm src/c src/d
+    WVPASS touch src/c
+    WVPASS ln src/c src/d
+    WVPASS bup save -t -n src src
+    WVPASS hardlink-test-run-restore
+    WVPASS echo ./src/a > hardlink-sets.expected
+    WVPASS echo ./src/b >> hardlink-sets.expected
+    WVPASS echo >> hardlink-sets.expected
+    WVPASS echo ./src/c >> hardlink-sets.expected
+    WVPASS echo ./src/d >> hardlink-sets.expected
+    (WVPASS cd src-restore; WVPASS hardlink-sets .) > hardlink-sets.restored \
+        || exit $?
+    WVPASS diff -u hardlink-sets.expected hardlink-sets.restored
+
+    # Test that we don't link outside restore tree.
+    WVPASS setup-hardlink-test
+    WVPASS cd "$tmpdir"
+    WVPASS mkdir src/a src/b
+    WVPASS touch src/a/1
+    WVPASS ln src/a/1 src/b/1
+    WVPASS bup index -vv src
+    WVPASS bup save -t -n src src
+    WVPASS force-delete src-restore
+    WVPASS mkdir src-restore
+    WVPASS bup restore -C src-restore "/src/latest$(pwd)/src/a/"
+    WVPASS test -e src-restore/1
+    WVPASS echo -n > hardlink-sets.expected
+    (WVPASS cd src-restore; WVPASS hardlink-sets .) > hardlink-sets.restored \
+        || exit $?
+    WVPASS diff -u hardlink-sets.expected hardlink-sets.restored
+
+    # Test that we do link within separate sub-trees.
+    WVPASS setup-hardlink-test
+    WVPASS cd "$tmpdir"
+    WVPASS mkdir src/a src/b
+    WVPASS touch src/a/1
+    WVPASS ln src/a/1 src/b/1
+    WVPASS bup index -vv src/a src/b
+    WVPASS bup save -t -n src src/a src/b
+    WVPASS hardlink-test-run-restore
+    WVPASS echo ./src/a/1 > hardlink-sets.expected
+    WVPASS echo ./src/b/1 >> hardlink-sets.expected
+    (WVPASS cd src-restore; WVPASS hardlink-sets .) > hardlink-sets.restored \
+        || exit $?
+    WVPASS diff -u hardlink-sets.expected hardlink-sets.restored
+
+    WVPASS rm -r "$tmpdir"
+
+) || exit $?
+
+WVSTART 'meta --edit'
+(
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?    
+    WVPASS cd "$tmpdir"
+    WVPASS mkdir src
+
+    WVPASS bup meta -cf src.meta src
 
-force-delete "${BUP_DIR}"
-force-delete "$TOP/bupmeta.tmp"
+    WVPASS bup meta --edit --set-uid 0 src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^uid: 0'
+    WVPASS bup meta --edit --set-uid 1000 src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^uid: 1000'
+
+    WVPASS bup meta --edit --set-gid 0 src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^gid: 0'
+    WVPASS bup meta --edit --set-gid 1000 src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^gid: 1000'
+
+    WVPASS bup meta --edit --set-user foo src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^user: foo'
+    WVPASS bup meta --edit --set-user bar src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^user: bar'
+    WVPASS bup meta --edit --unset-user src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^user:'
+    WVPASS bup meta --edit --set-user bar --unset-user src.meta \
+        | WVPASS bup meta -tvvf - | WVPASS grep -qE '^user:'
+    WVPASS bup meta --edit --unset-user --set-user bar src.meta \
+        | WVPASS bup meta -tvvf - | WVPASS grep -qE '^user: bar'
+
+    WVPASS bup meta --edit --set-group foo src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^group: foo'
+    WVPASS bup meta --edit --set-group bar src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^group: bar'
+    WVPASS bup meta --edit --unset-group src.meta | WVPASS bup meta -tvvf - \
+        | WVPASS grep -qE '^group:'
+    WVPASS bup meta --edit --set-group bar --unset-group src.meta \
+        | WVPASS bup meta -tvvf - | WVPASS grep -qE '^group:'
+    WVPASS bup meta --edit --unset-group --set-group bar src.meta \
+        | WVPASS bup meta -tvvf - | grep -qE '^group: bar'
+
+    WVPASS rm -r "$tmpdir"
+
+) || exit $?
+
+WVSTART 'meta --no-recurse'
+(
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?    
+    WVPASS cd "$tmpdir"
+    WVPASS mkdir src
+    WVPASS mkdir src/foo
+    WVPASS touch src/foo/{1,2,3}
+    WVPASS bup meta -cf src.meta src
+    WVPASSEQ "$(bup meta -tf src.meta | LC_ALL=C sort)" "src/
+src/foo/
+src/foo/1
+src/foo/2
+src/foo/3"
+    WVPASS bup meta --no-recurse -cf src.meta src
+    WVPASSEQ "$(bup meta -tf src.meta | LC_ALL=C sort)" "src/"
+    WVPASS rm -r "$tmpdir"
+) || exit $?
+
+# Test ownership restoration (when not root or fakeroot).
+(
+    if [ "$root_status" != none ]; then
+        exit 0
+    fi
+
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?    
+
+    first_group="$(WVPASS bup-python -c 'import os,grp; \
+      print grp.getgrgid(os.getgroups()[0])[0]')" || exit $?
+    last_group="$(bup-python -c 'import os,grp; \
+      print grp.getgrgid(os.getgroups()[-1])[0]')" || exit $?
+    last_group_erx="$(escape-erx "$last_group")"
+
+    WVSTART 'metadata (restoration of ownership)'
+    WVPASS cd "$tmpdir"
+    WVPASS touch src
+    # Some systems always assign the parent dir group to new paths
+    # (sgid).  Make sure the group is one we're in.
+    WVPASS chgrp -R "$first_group" src
+
+    WVPASS bup meta -cf src.meta src
+
+    WVPASS mkdir dest
+    WVPASS cd dest
+    # Make sure we don't change (or try to change) the user when not root.
+    WVPASS bup meta --edit --set-user root ../src.meta | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qvE '^user: root'
+    WVPASS rm -rf src
+    WVPASS bup meta --edit --unset-user --set-uid 0 ../src.meta \
+        | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qvE '^user: root'
+
+    # Make sure we can restore one of the user's groups.
+    WVPASS rm -rf src
+    WVPASS bup meta --edit --set-group "$last_group" ../src.meta \
+        | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qE "^group: $last_group_erx"
+
+    # Make sure we can restore one of the user's gids.
+    user_gids="$(id -G)" || exit $?
+    last_gid="$(echo ${user_gids/* /})" || exit $?
+    WVPASS rm -rf src
+    WVPASS bup meta --edit --unset-group --set-gid "$last_gid" ../src.meta \
+        | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qE "^gid: $last_gid"
+
+    # Test --numeric-ids (gid).
+    WVPASS rm -rf src
+    current_gidx=$(bup meta -tvvf ../src.meta | grep -e '^gid:') || exit $?
+    WVPASS bup meta --edit --set-group "$last_group" ../src.meta \
+        | WVPASS bup meta -x --numeric-ids
+    new_gidx=$(bup xstat src | grep -e '^gid:') || exit $?
+    WVPASSEQ "$current_gidx" "$new_gidx"
+
+    # Test that restoring an unknown user works.
+    unknown_user=$("$TOP"/t/unknown-owner --user) || exit $?
+    WVPASS rm -rf src
+    current_uidx=$(bup meta -tvvf ../src.meta | grep -e '^uid:') || exit $?
+    WVPASS bup meta --edit --set-user "$unknown_user" ../src.meta \
+        | WVPASS bup meta -x
+    new_uidx=$(bup xstat src | grep -e '^uid:') || exit $?
+    WVPASSEQ "$current_uidx" "$new_uidx"
+
+    # Test that restoring an unknown group works.
+    unknown_group=$("$TOP"/t/unknown-owner --group) || exit $?
+    WVPASS rm -rf src
+    current_gidx=$(bup meta -tvvf ../src.meta | grep -e '^gid:') || exit $?
+    WVPASS bup meta --edit --set-group "$unknown_group" ../src.meta \
+        | WVPASS bup meta -x
+    new_gidx=$(bup xstat src | grep -e '^gid:') || exit $?
+    WVPASSEQ "$current_gidx" "$new_gidx"
+
+    WVPASS rm -r "$tmpdir"
+
+) || exit $?
+
+# Test ownership restoration (when root or fakeroot).
+(
+    if [ "$root_status" = none ]; then
+        exit 0
+    fi
+
+    tmpdir="$(WVPASS wvmktempdir)" || exit $?    
+
+    uid=$(WVPASS id -un) || exit $?
+    gid=$(WVPASS id -gn) || exit $?
+
+    WVSTART 'metadata (restoration of ownership as root)'
+    WVPASS cd "$tmpdir"
+    WVPASS touch src
+    WVPASS chown "$uid:$gid" src # In case the parent dir is sgid, etc.
+    WVPASS bup meta -cf src.meta src
+
+    WVPASS mkdir dest
+    WVPASS chmod 700 dest # so we can't accidentally do something insecure
+    WVPASS cd dest
+
+    other_uinfo="$(id-other-than --user "$uid")" || exit $?
+    other_user="${other_uinfo%%:*}"
+    other_uid="${other_uinfo##*:}"
+
+    other_ginfo="$(id-other-than --group "$gid")" || exit $?
+    other_group="${other_ginfo%%:*}"
+    other_gid="${other_ginfo##*:}"
+
+    # Make sure we can restore a uid (must be in /etc/passwd b/c cygwin).
+    WVPASS bup meta --edit --unset-user --set-uid "$other_uid" ../src.meta \
+        | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qE "^uid: $other_uid"
+
+    # Make sure we can restore a gid (must be in /etc/group b/c cygwin).
+    WVPASS bup meta --edit --unset-group --set-gid "$other_gid" ../src.meta \
+        | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qE "^gid: $other_gid"
+
+    other_uinfo2="$(id-other-than --user "$(id -un)" "$other_user")" || exit $?
+    other_user2="${other_uinfo2%%:*}"
+    other_user2_erx="$(escape-erx "$other_user2")" || exit $?
+    other_uid2="${other_uinfo2##*:}"
+
+    other_ginfo2="$(id-other-than --group "$(id -gn)" "$other_group")" || exit $?
+    other_group2="${other_ginfo2%%:*}"
+    other_group2_erx="$(escape-erx "$other_group2")" || exit $?
+    other_gid2="${other_ginfo2##*:}"
+
+    # Try to restore a user (and see that user trumps uid when uid is not 0).
+    WVPASS bup meta --edit \
+        --set-uid "$other_uid" --set-user "$other_user2" ../src.meta \
+        | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qE "^user: $other_user2_erx"
+
+    # Try to restore a group (and see that group trumps gid when gid is not 0).
+    WVPASS bup meta --edit \
+        --set-gid "$other_gid" --set-group "$other_group2" ../src.meta \
+        | WVPASS bup meta -x
+    WVPASS bup xstat src | WVPASS grep -qE "^group: $other_group2_erx"
+
+    # Test --numeric-ids (uid).  Note the name 'root' is not handled
+    # specially, so we use that here as the test user name.  We assume
+    # that the root user's uid is never 42.
+    WVPASS rm -rf src
+    WVPASS bup meta --edit --set-user root --set-uid "$other_uid" ../src.meta \
+        | WVPASS bup meta -x --numeric-ids
+    new_uidx=$(bup xstat src | grep -e '^uid:') || exit $?
+    WVPASSEQ "$new_uidx" "uid: $other_uid"
+
+    # Test --numeric-ids (gid).  Note the name 'root' is not handled
+    # specially, so we use that here as the test group name.  We
+    # assume that the root group's gid is never 42.
+    WVPASS rm -rf src
+    WVPASS bup meta --edit --set-group root --set-gid "$other_gid" ../src.meta \
+        | WVPASS bup meta -x --numeric-ids
+    new_gidx=$(bup xstat src | grep -e '^gid:') || exit $?
+    WVPASSEQ "$new_gidx" "gid: $other_gid"
+
+    # Test that restoring an unknown user works.
+    unknown_user=$("$TOP"/t/unknown-owner --user) || exit $?
+    WVPASS rm -rf src
+    WVPASS bup meta --edit \
+        --set-uid "$other_uid" --set-user "$unknown_user" ../src.meta \
+        | WVPASS bup meta -x
+    new_uidx=$(bup xstat src | grep -e '^uid:') || exit $?
+    WVPASSEQ "$new_uidx" "uid: $other_uid"
+
+    # Test that restoring an unknown group works.
+    unknown_group=$("$TOP"/t/unknown-owner --group) || exit $?
+    WVPASS rm -rf src
+    WVPASS bup meta --edit \
+        --set-gid "$other_gid" --set-group "$unknown_group" ../src.meta \
+        | WVPASS bup meta -x
+    new_gidx=$(bup xstat src | grep -e '^gid:') || exit $?
+    WVPASSEQ "$new_gidx" "gid: $other_gid"
+
+    if ! [[ $(uname) =~ CYGWIN ]]; then
+        # For now, skip these on Cygwin because it doesn't allow
+        # restoring an unknown uid/gid.
+
+        # Make sure a uid of 0 trumps a non-root user.
+        WVPASS bup meta --edit --set-user "$other_user2" ../src.meta \
+            | WVPASS bup meta -x
+        WVPASS bup xstat src | WVPASS grep -qvE "^user: $other_user2_erx"
+        WVPASS bup xstat src | WVPASS grep -qE "^uid: 0"
+
+        # Make sure a gid of 0 trumps a non-root group.
+        WVPASS bup meta --edit --set-group "$other_group2" ../src.meta \
+            | WVPASS bup meta -x
+        WVPASS bup xstat src | WVPASS grep -qvE "^group: $other_group2_erx"
+        WVPASS bup xstat src | WVPASS grep -qE "^gid: 0"
+    fi
+
+    WVPASS rm -r "$tmpdir"
+
+) || exit $?
+
+
+# Root-only tests that require an FS with all the trimmings: ACLs,
+# Linux attr, Linux xattr, etc.
+if [ "$root_status" = root ]; then
+    (
+        # Some cleanup handled in universal-cleanup() above.
+        # These tests are only likely to work under Linux for now
+        # (patches welcome).
+        [[ $(uname) =~ Linux ]] || exit 0
+
+        if ! modprobe loop; then
+            echo 'Unable to load loopback module; skipping dependent tests.' 1>&2
+            exit 0
+        fi
+
+        testfs="$(WVPASS wvmkmountpt)" || exit $?
+        testfs_limited="$(WVPASS wvmkmountpt)" || exit $?
+        tmpdir="$(WVPASS wvmktempdir)" || exit $?
+        export BUP_DIR="$tmpdir/bup"
+
+        WVSTART 'meta - general (as root)'
+        WVPASS setup-test-tree
+        WVPASS cd "$tmpdir"
+
+        umount "$testfs"
+        WVPASS dd if=/dev/zero of=testfs.img bs=1M count=32
+        # Make sure we have all the options the chattr test needs
+        # (i.e. create a "normal" ext4 filesystem).
+        WVPASS mke2fs -F -m 0 \
+            -I 256 \
+            -O has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize \
+            testfs.img
+        WVPASS mount -o loop,acl,user_xattr testfs.img "$testfs"
+        # Hide, so that tests can't create risks.
+        WVPASS chown root:root "$testfs"
+        WVPASS chmod 0700 "$testfs"
+
+        umount "$testfs_limited"
+        WVPASS dd if=/dev/zero of=testfs-limited.img bs=1M count=32
+        WVPASS mkfs -t vfat testfs-limited.img
+        WVPASS mount -o loop,uid=root,gid=root,umask=0077 \
+            testfs-limited.img "$testfs_limited"
+
+        WVPASS cp -pPR src "$testfs"/src
+        (WVPASS cd "$testfs"; WVPASS test-src-create-extract) || exit $?
+
+        WVSTART 'meta - atime (as root)'
+        WVPASS force-delete "$testfs"/src
+        WVPASS mkdir "$testfs"/src
+        (
+            WVPASS mkdir "$testfs"/src/foo
+            WVPASS touch "$testfs"/src/bar
+            WVPASS bup-python -c "from bup import xstat; \
+                x = xstat.timespec_to_nsecs((42, 0));\
+                xstat.utime('$testfs/src/foo', (x, x));\
+                xstat.utime('$testfs/src/bar', (x, x));"
+            WVPASS cd "$testfs"
+            WVPASS bup meta -v --create --recurse --file src.meta src
+            WVPASS bup meta -tvf src.meta
+            # Test extract.
+            WVPASS force-delete src-restore
+            WVPASS mkdir src-restore
+            WVPASS cd src-restore
+            WVPASS bup meta --extract --file ../src.meta
+            WVPASSEQ "$(bup xstat --include-fields=atime src/foo)" "atime: 42"
+            WVPASSEQ "$(bup xstat --include-fields=atime src/bar)" "atime: 42"
+            # Test start/finish extract.
+            WVPASS force-delete src
+            WVPASS bup meta --start-extract --file ../src.meta
+            WVPASS test -d src
+            WVPASS bup meta --finish-extract --file ../src.meta
+            WVPASSEQ "$(bup xstat --include-fields=atime src/foo)" "atime: 42"
+            WVPASSEQ "$(bup xstat --include-fields=atime src/bar)" "atime: 42"
+        ) || exit $?
+
+        WVSTART 'meta - Linux attr (as root)'
+        WVPASS force-delete "$testfs"/src
+        WVPASS mkdir "$testfs"/src
+        (
+            WVPASS touch "$testfs"/src/foo
+            WVPASS mkdir "$testfs"/src/bar
+            WVPASS chattr +acdeijstuADS "$testfs"/src/foo
+            WVPASS chattr +acdeijstuADST "$testfs"/src/bar
+            (WVPASS cd "$testfs"; WVPASS test-src-create-extract) || exit $?
+            # Test restoration to a limited filesystem (vfat).
+            (
+                WVPASS bup meta --create --recurse --file "$testfs"/src.meta \
+                    "$testfs"/src
+                WVPASS force-delete "$testfs_limited"/src-restore
+                WVPASS mkdir "$testfs_limited"/src-restore
+                WVPASS cd "$testfs_limited"/src-restore
+                WVFAIL bup meta --extract --file "$testfs"/src.meta 2>&1 \
+                    | WVPASS grep -e '^Linux chattr:' \
+                    | WVPASS bup-python -c \
+                    'import sys; exit(not len(sys.stdin.readlines()) == 3)'
+            ) || exit $?
+        ) || exit $?
+
+        WVSTART 'meta - Linux xattr (as root)'
+        WVPASS force-delete "$testfs"/src
+        WVPASS mkdir "$testfs"/src
+        WVPASS touch "$testfs"/src/foo
+        WVPASS mkdir "$testfs"/src/bar
+        WVPASS attr -s foo -V bar "$testfs"/src/foo
+        WVPASS attr -s foo -V bar "$testfs"/src/bar
+        (WVPASS cd "$testfs"; WVPASS test-src-create-extract) || exit $?
+
+        # Test restoration to a limited filesystem (vfat).
+        (
+            WVPASS bup meta --create --recurse --file "$testfs"/src.meta \
+                "$testfs"/src
+            WVPASS force-delete "$testfs_limited"/src-restore
+            WVPASS mkdir "$testfs_limited"/src-restore
+            WVPASS cd "$testfs_limited"/src-restore
+            WVFAIL bup meta --extract --file "$testfs"/src.meta
+            WVFAIL bup meta --extract --file "$testfs"/src.meta 2>&1 \
+                | WVPASS grep -e "^xattr\.set '" \
+                | WVPASS bup-python -c \
+                'import sys; exit(not len(sys.stdin.readlines()) == 2)'
+        ) || exit $?
+
+        WVSTART 'meta - POSIX.1e ACLs (as root)'
+        WVPASS force-delete "$testfs"/src
+        WVPASS mkdir "$testfs"/src
+        WVPASS touch "$testfs"/src/foo
+        WVPASS mkdir "$testfs"/src/bar
+        WVPASS setfacl -m u:root:r "$testfs"/src/foo
+        WVPASS setfacl -m u:root:r "$testfs"/src/bar
+        (WVPASS cd "$testfs"; WVPASS test-src-create-extract) || exit $?
+
+        # Test restoration to a limited filesystem (vfat).
+        (
+            WVPASS bup meta --create --recurse --file "$testfs"/src.meta \
+                "$testfs"/src
+            WVPASS force-delete "$testfs_limited"/src-restore
+            WVPASS mkdir "$testfs_limited"/src-restore
+            WVPASS cd "$testfs_limited"/src-restore
+            WVFAIL bup meta --extract --file "$testfs"/src.meta 2>&1 \
+                | WVPASS grep -e '^POSIX1e ACL applyto:' \
+                | WVPASS bup-python -c \
+                'import sys; exit(not len(sys.stdin.readlines()) == 2)'
+        ) || exit $?
+
+        WVPASS umount "$testfs"
+        WVPASS umount "$testfs_limited"
+        WVPASS rm -r "$testfs" "$testfs_limited"
+
+        WVPASS rm -r "$tmpdir"
+
+    ) || exit $?
+fi
 
-exit 0
+WVPASS rm -r "$tmpdir"