LDC: Tweak ownership & permissions of Azure CI tarballs

Author: kinke

.azure-pipelines/posix.yml

@@ -56,14 +56,21 @@ steps:
     artifactName=llvm-$ARTIFACT_ID-$CI_OS-x86_64$ASSERTS_SUFFIX
     mv install $artifactName
     mkdir artifacts
-    XZ_OPT=-9 tar -cJf artifacts/$artifactName.tar.xz $artifactName
+    chmod -R go=rX $artifactName
+    if [ "$CI_OS" = "linux" ]; then
+      XZ_OPT=-9 tar -cJf artifacts/$artifactName.tar.xz --owner=0 --group=0 $artifactName
+    else
+      sudo chown -R root:wheel $artifactName
+      tar -cJf artifacts/$artifactName.tar.xz --options='compression-level=9' $artifactName
+    fi
   displayName: Pack installation dir
 - script: |
     set -e
     cd ..
     if [[ "$CI_OS" = "linux" && "$LLVM_ENABLE_ASSERTIONS" = "OFF" ]]; then
       artifactName=llvm-$ARTIFACT_ID.src
-      XZ_OPT=-9 tar -cJf artifacts/$artifactName.tar.xz --exclude-vcs --transform=s,${BUILD_SOURCESDIRECTORY:1},$artifactName, $BUILD_SOURCESDIRECTORY
+      chmod -R go=rX $BUILD_SOURCESDIRECTORY
+      XZ_OPT=-9 tar -cJf artifacts/$artifactName.tar.xz --exclude-vcs --owner=0 --group=0 --transform=s,${BUILD_SOURCESDIRECTORY:1},$artifactName, $BUILD_SOURCESDIRECTORY
     else
       echo 'Skipping'
     fi