mkosi.build: add code to determine the right nobody user/group name

diff --git a/mkosi.build b/mkosi.build
index c2693dedcfa182c5b957425882e3cbfaa4f2a25d..0781f0d9c4cc79c795f9e4857912ef45ca8b9951 100755 (executable)
--- a/mkosi.build
+++ b/mkosi.build
@@ -28,7 +28,41 @@ export LC_CTYPE=en_US.UTF-8
 
 sysvinit_path=`realpath /etc/init.d`
 
-[ -f "$BUILDDIR"/build.ninja ] || meson "$BUILDDIR" -D "sysvinit-path=$sysvinit_path" -D default-hierarchy=unified -D man=false
+nobody_user=`id -u -n 65534 2> /dev/null`
+if [ "$nobody_user" != "" ] ; then
+        # Validate that we can translate forth and back
+        if [ "`id -u $nobody_user`" != 65534 ] ; then
+                nobody_user=""
+        fi
+fi
+if [ "$nobody_user" = "" ] ; then
+        if id -u nobody 2> /dev/null ; then
+                # The "nobody" user is defined already for something else, pick the Fedora name
+                nobody_user=nfsnobody
+        else
+                # The "nobody" user name is free, use it
+                nobody_user=nobody
+        fi
+fi
+
+nobody_group=`id -g -n 65534 2> /dev/null`
+if [ "$nobody_group" != "" ] ; then
+        # Validate that we can translate forth and back
+        if [ "`id -g $nobody_group`" != 65534 ] ; then
+                nobody_group=""
+        fi
+fi
+if [ "$nobody_group" = "" ] ; then
+        if id -u nobody 2> /dev/null ; then
+                # The "nobody" group is defined already for something else, pick the Fedora name
+                nobody_group=nfsnobody
+        else
+                # The "nobody" group name is free, use it
+                nobody_group=nobody
+        fi
+fi
+
+[ -f "$BUILDDIR"/build.ninja ] || meson "$BUILDDIR" -D "sysvinit-path=$sysvinit_path" -D default-hierarchy=unified -D man=false -D "nobody-user=$nobody_user" -D "nobody-group=$nobody_group"
 ninja -C "$BUILDDIR" all
 [ "$WITH_TESTS" = 0 ] || ninja -C "$BUILDDIR" test || ( RET="$?" ; cat "$BUILDDIR"/meson-logs/testlog.txt ; exit "$RET" )
 ninja -C "$BUILDDIR" install