On Thu, 20 Feb 2025 at 14:55, Cedric Blancher <cedric.blanc...@gmail.com> wrote:
>
> Good afternoon!
>
> Cygwin 3.6.0-0.378.g78fb13d21f4f.x86_64, Cygwin coreutils package 9.6-1
>
> coreutils mkdir is broken on UNC paths:
>
> mkdir -p -- 
> "//ember.data4.local/afs/disk11/builds/bash/install_root/usr/local/bin"
> mkdir: cannot create directory ‘//ember.data4.local’: Read-only file system
>
> This happens because you cannot do a "cd .." in
> //ember.data4.local/afs, because "afs" is the UNC prefix for that
> filesystem.

Might not be coreutils issue, looks more like a Cygwin issue:
strace shows that Cygwin tries a mkdir("//ember.data4.local"), which
fails, and then a chdir("//ember.data4.local"), which also fails
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  912  621383 [main] mkdir 10898 __set_errno: virtual int
fhandler_base::mkdir(mode_t):1672 setting errno 30
 1108  622491 [main] mkdir 10898 mkdir: -1 =
mkdir(//ember.data4.local, 511), errno 30
  734  623225 [main] mkdir 10898 chdir: dir '//ember.data4.local'
  899  624124 [main] mkdir 10898 normalize_posix_path: src //ember.data4.local
 1241  625365 [main] mkdir 10898 normalize_posix_path:
//ember.data4.local = normalize_posix_path (//ember.data4.local)
  870  626235 [main] mkdir 10898 mount_info::conv_to_win32_path:
conv_to_win32_path (//ember.data4.local)
  809  627044 [main] mkdir 10898 mount_info::conv_to_win32_path:
src_path //ember.data4.local, dst \\ember.data4.local, flags 0x0, rc 0
  723  627767 [main] mkdir 10898 build_fh_pc: fh 0x800009DA0, dev 000000C2
  782  628549 [main] mkdir 10898 __set_errno: int chdir(const
char*):3837 setting errno 2
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Ced
-- 
Cedric Blancher <cedric.blanc...@gmail.com>
[https://plus.google.com/u/0/+CedricBlancher/]
Institute Pasteur

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