[ruby-core:102708] [Ruby master Bug#16979] FileUtils#cp_r with preserve, lchmod fails with ENOTSUPP
From:
usa@...
Date:
2021-03-02 11:23:47 UTC
List:
ruby-core #102708
Issue #16979 has been updated by usa (Usaku NAKAMURA).
Backport changed from 2.5: UNKNOWN, 2.6: REQUIRED, 2.7: DONE to 2.5: UNKNOWN, 2.6: DONE, 2.7: DONE
ruby_2_6 r67907 merged revision(s) a19228f8.
----------------------------------------
Bug #16979: FileUtils#cp_r with preserve, lchmod fails with ENOTSUPP
https://bugs.ruby-lang.org/issues/16979#change-90702
* Author: vihai (Daniele Orlandi)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [armv7-linux-musleabihf]
* Backport: 2.5: UNKNOWN, 2.6: DONE, 2.7: DONE
----------------------------------------
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
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