Add rpmtests wrapper for container use

This script replaces the role of mktree.rootfs in the podman image where
it serves as a wrapper for the bundled rpmtests that makes it store its
working files in the current directory (bind mounted from host) by using
an ugly symlink hack.  The built in -C option can't be used here because
it looks for atlocal in the destination directory where it obviously
isn't, hence the hack.

However, calling "mktree check" in the container is pretty confusing so
move the hack out into a separate rpmtests wrapper so that we can just
call "rpmtests" as one would expect.  This also makes the hack more
explicit and obvious.

For consistency, use the same wrapper when running from the build dir
(mktree.fedora) as well.  Still prefer the locally built test scripts,
though, and don't print the test log if not asked.

tests/mktree.common

@@ -3,6 +3,7 @@ make_install()
 {
     export DESTDIR=$1
     local ld_conf_dir=$DESTDIR/@CMAKE_INSTALL_SYSCONFDIR@/ld.so.conf.d
+    local script_dir=/usr/share/mktree
 
     @CMAKE_MAKE_PROGRAM@ -C @CMAKE_BINARY_DIR@ install
     mkdir -p $ld_conf_dir
@@ -13,6 +14,11 @@ make_install()
 
     mkdir -p $DESTDIR/usr/bin
     cp @TESTPROG_NAMES@ $DESTDIR/usr/bin/
+    ln -s $script_dir/rpmtests.sh $DESTDIR/usr/bin/rpmtests
+
+    mkdir -p $DESTDIR/$script_dir
+    cp rpmtests atlocal mktree.common $DESTDIR/$script_dir/
+    cp @CMAKE_CURRENT_SOURCE_DIR@/rpmtests.sh $DESTDIR/$script_dir/
 
     mkdir -p $DESTDIR/build
     ln -sf ../data/SOURCES $DESTDIR/build/

tests/mktree.fedora

@@ -190,7 +190,7 @@ case $CMD in
     check)
         mount_tree --read-only
         snapshot exec --tmpfs /tmp --bind $PWD $PWD --setenv RPMTREE $RPMTREE \
-                      sh -c 'cd '$PWD' && exec ./rpmtests "$@"' rpmtests "$@"
+                      rpmtests -C $PWD "$@"
     ;;
     reset)
         rm -rf "$SANDBOX_DIR"

tests/mktree.podman

@@ -42,7 +42,7 @@ case $CMD in
         esac
         $PODMAN run --privileged -it --rm --read-only --tmpfs /tmp \
                     -v /srv --workdir /srv -e ROOTLESS=$ROOTLESS \
-                    --env RPMTREE=/ $OPTS $IMAGE mktree check "$@"
+                    --env RPMTREE=/ $OPTS $IMAGE rpmtests --log "$@"
     ;;
     reset)
         $PODMAN stop $NAME >/dev/null &&

tests/mktree.rootfs

@@ -7,24 +7,14 @@
 # The / filesystem should be read-only to prevent parallel tests from altering
 # it (online changes to an underlying filesystem are disallowed in OverlayFS).
 
-DATA_DIR=/usr/share/mktree
-
 CMD=$1; shift
 case $CMD in
     build)
         source ./mktree.common
         make_install /
-
-        mkdir -p $DATA_DIR
-        cp $0 /usr/bin/
-        cp rpmtests atlocal mktree.common $DATA_DIR/
     ;;
     check)
-        ln -s $DATA_DIR/* .
         ./rpmtests "$@"
-        RC=$?
-        cat rpmtests.log
-        exit $RC
     ;;
     *)
         echo "Unsupported command." >&2

tests/rpmtests.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+# Wrapper for rpmtests that looks for atlocal in the script's directory instead
+# of $PWD or the one specified with -C.  In addition, implements the -L | --log
+# option to print the test log when done.
+
+SCRIPT_DIR=$(dirname $(readlink -f $0))
+SCRIPT_FILES="rpmtests atlocal mktree.common"
+
+TARGET_DIR=$PWD
+PRINT_LOG=0
+
+cd "$SCRIPT_DIR"
+
+while [ $# != 0 ]; do
+    case $1 in
+        -C | --directory )
+            TARGET_DIR="$2"
+            shift
+        ;;
+        -L | --log )
+            PRINT_LOG=1
+        ;;
+        *)
+            break
+        ;;
+    esac
+    shift
+done
+
+# Symlink script files into $TARGET_DIR, prefer local versions though
+for file in $SCRIPT_FILES; do
+    [ -f "$TARGET_DIR/$file" ] || ln -s $PWD/$file $TARGET_DIR/
+done
+
+cd "$TARGET_DIR"
+
+# Run the test suite
+./rpmtests "$@"; RC=$?
+[ $PRINT_LOG == 1 ] && cat rpmtests.log
+
+# Clean up the symlinks
+for file in $SCRIPT_FILES; do
+    [ -L "$file" ] && rm "$file"
+done
+
+exit $RC