On Fri, Aug 18, 2023 at 10:34 AM Corinna Vinschen <corinna-cyg...@cygwin.com> wrote: > > On Aug 18 06:02, Martin Wege via Cygwin wrote: > > On Mon, Aug 7, 2023 at 4:42 PM Martin Wege <martin.l.w...@gmail.com> wrote: > > > > > > Hello, > > > > > > We get a weird mkfifo failure in Cygwin on NTFS: > > > > > > /usr/bin/mkfifo -m 600 x.fifo > > > mkfifo: cannot set permissions of 'x.fifo': Not a directory > > > > > > Is there a known workaround? So far named fifos cannot be created somehow. > > > > This is fixed for NTFS, but still broken for Windows builtin NFS v3 client: > > It was actually never supposed to work on NFS. Cygwin FIFOs are > created as symlinks of the type Windows shortcut with the R/O attribute > set. Those are only generated on NTFS and FAT filesystems. NFS symlinks > are generated using special magic. NFS doesn't support DOS attributes.
NFS supports symlinks! Easy solution would be to say that symlinks on NFS pointing to :\0:c4:$inodenum are pipes on the local Cygwin machine. /usr/bin/mkfifo on Cygwin creates a symlink :\0:c4:$inodenum. Cygwin stat() functions turn symlinks with a value of :\0:c4:... to pipes. Everyone is happy! It does not have to be portable across different platforms. Just portable enough that mkfifo in with bash scripts works on NFS. Thanks, Martin > > Corinna -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
