Bug #16979
Updated by vihai (Daniele Orlandi) almost 4 years ago
Hello, I encountered an issue copying a directory tree with symlinks with FileUtils#cp_r with preserve flag. Apparently FileUtils considers the possibility that lchmod raises NotImplementedError, however it apparently does not but still fails with ENOTSUPP. Note that I am using musl libc (it is an Alpine 3.12 distribution) thus it may be related to how libc exposes unsupported lchmod. I was unable to reproduce it with a minimal tree, thus here is the output with the actual tree (it is a bundled application): ``` cp -rp /root/kamaji/assets /root/kamaji/bin /root/kamaji/config /root/kamaji/lib /root/kamaji/vendor /root/kamaji/apk/build/data Traceback (most recent call last): 42: from apk/build.rb:28:in `<main>' 41: from /usr/lib/ruby/2.7.0/fileutils.rb:467:in `cp_r' 40: from /usr/lib/ruby/2.7.0/fileutils.rb:1586:in `fu_each_src_dest' 39: from /usr/lib/ruby/2.7.0/fileutils.rb:1595:in `fu_each_src_dest0' 38: from /usr/lib/ruby/2.7.0/fileutils.rb:1595:in `each' 37: from /usr/lib/ruby/2.7.0/fileutils.rb:1597:in `block in fu_each_src_dest0' 36: from /usr/lib/ruby/2.7.0/fileutils.rb:1588:in `block in fu_each_src_dest' 35: from /usr/lib/ruby/2.7.0/fileutils.rb:468:in `block in cp_r' 34: from /usr/lib/ruby/2.7.0/fileutils.rb:494:in `copy_entry' 33: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 32: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 31: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 30: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 29: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 28: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 27: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 26: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 25: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 24: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 23: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 22: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 21: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 20: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 19: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 18: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 17: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 16: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 15: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 14: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 13: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 12: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 11: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 10: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 9: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 8: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 7: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 6: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `wrap_traverse' 5: from /usr/lib/ruby/2.7.0/fileutils.rb:1514:in `each' 4: from /usr/lib/ruby/2.7.0/fileutils.rb:1515:in `block in wrap_traverse' 3: from /usr/lib/ruby/2.7.0/fileutils.rb:1518:in `wrap_traverse' 2: from /usr/lib/ruby/2.7.0/fileutils.rb:500:in `block in copy_entry' 1: from /usr/lib/ruby/2.7.0/fileutils.rb:1441:in `copy_metadata' /usr/lib/ruby/2.7.0/fileutils.rb:1441:in `lchmod': Not supported @ apply2files - /root/kamaji/apk/build/data/vendor/bundle/ruby/2.7.0/gems/ffi-1.13.1/ext/ffi_c/libffi-armv7-linux-musleabihf/.libs/libffi.la (Errno::ENOTSUP) ``` ``` # ll /root/kamaji/apk/build/data/vendor/bundle/ruby/2.7.0/gems/ffi-1.13.1/ext/ffi_c/libffi-armv7-linux-musleabihf/.libs/ total 8 drwxr-xr-x 2 root root 4096 Jun 23 15:28 . drwxr-xr-x 8 root root 4096 Jun 23 15:28 .. lrwxrwxrwx 1 root root 12 Jun 23 15:28 libffi.la -> ../libffi.la # ll /root/kamaji/apk/build/data/vendor/bundle/ruby/2.7.0/gems/ffi-1.13.1/ext/ffi_c/libffi-armv7-linux-musleabihf/ total 612 [...] -rw-r--r-- 1 root root 915 Jun 23 13:48 libffi.la [...] # ruby -v ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [armv7-linux-musleabihf] # uname -a Linux arm-builder 4.19.118-v7l+ #1311 SMP Mon Apr 27 14:26:42 BST 2020 armv7l GNU/Linux ``` LIBC is musl-1.1.24-r9