dracut.sh: Adjust squash and strip order

Previously with squash module, some binaries will be reinstalled, but
stripping happens before that so new installed binaries is not stripped.
So adjust the squash and strip order, ensure new installed binaries are
stripped just the same way with the old binaries.

Also split squash into two stage to make the split easier, move the
squash temp dir into initdir so stripping will cover that too,
and print more usefule message.

Signed-off-by: Kairui Song <kasong@redhat.com>

dracut.sh

@@ -1671,21 +1671,6 @@ for d in $(ldconfig_paths); do
     rmdir -p --ignore-fail-on-non-empty "$initdir/$d" >/dev/null 2>&1
 done
 
-if [[ $do_strip = yes ]] && ! [[ $DRACUT_FIPS_MODE ]]; then
-    dinfo "*** Stripping files ***"
-    find "$initdir" -type f \
-        -executable -not -path '*/lib/modules/*.ko' -print0 \
-        | xargs -r -0 $strip_cmd -g -p 2>/dev/null
-
-    # strip kernel modules, but do not touch signed modules
-    find "$initdir" -type f -path '*/lib/modules/*.ko' -print0 \
-        | while read -r -d $'\0' f || [ -n "$f" ]; do
-        SIG=$(tail -c 28 "$f" | tr -d '\000')
-        [[ $SIG == '~Module signature appended~' ]] || { printf "%s\000" "$f"; }
-    done | xargs -r -0 $strip_cmd -g -p
-
-    dinfo "*** Stripping files done ***"
-fi
 if [[ $early_microcode = yes ]]; then
     dinfo "*** Generating early-microcode cpio image ***"
     ucode_dir=(amd-ucode intel-ucode)
@@ -1757,9 +1742,8 @@ if [[ $hostonly_cmdline == "yes" ]] ; then
     fi
 fi
 
-dinfo "*** Creating image file '$outfile' ***"
-
 if dracut_module_included "squash"; then
+    dinfo "*** Install squash loader ***"
     if ! check_kernel_config CONFIG_SQUASHFS; then
         dfatal "CONFIG_SQUASHFS have to be enabled for dracut squash module to work"
         exit 1
@@ -1773,7 +1757,7 @@ if dracut_module_included "squash"; then
         exit 1
     fi
 
-    readonly squash_dir="${DRACUT_TMPDIR}/squashfs"
+    readonly squash_dir="$initdir/squash/root"
     readonly squash_img=$initdir/squash/root.img
 
     # Currently only move "usr" "etc" to squashdir
@@ -1864,15 +1848,38 @@ if dracut_module_included "squash"; then
             fi
         done
     done
+fi
 
+if [[ $do_strip = yes ]] && ! [[ $DRACUT_FIPS_MODE ]]; then
+    dinfo "*** Stripping files ***"
+    find "$initdir" -type f \
+        -executable -not -path '*/lib/modules/*.ko' -print0 \
+        | xargs -r -0 $strip_cmd -g -p 2>/dev/null
+
+    # strip kernel modules, but do not touch signed modules
+    find "$initdir" -type f -path '*/lib/modules/*.ko' -print0 \
+        | while read -r -d $'\0' f || [ -n "$f" ]; do
+        SIG=$(tail -c 28 "$f" | tr -d '\000')
+        [[ $SIG == '~Module signature appended~' ]] || { printf "%s\000" "$f"; }
+    done | xargs -r -0 $strip_cmd -g -p
+    dinfo "*** Stripping files done ***"
+fi
+
+if dracut_module_included "squash"; then
+    dinfo "*** Squashing the files inside the initramfs ***"
     mksquashfs $squash_dir $squash_img -comp xz -b 64K -Xdict-size 100% &> /dev/null
 
     if [[ $? != 0 ]]; then
         dfatal "dracut: Failed making squash image"
         exit 1
     fi
+
+    rm -rf $squash_dir
+    dinfo "*** Squashing the files inside the initramfs done ***"
 fi
 
+dinfo "*** Creating image file '$outfile' ***"
+
 if [[ $uefi = yes ]]; then
     readonly uefi_outdir="$DRACUT_TMPDIR/uefi"
     mkdir "$uefi_outdir"