I would like to see fchownat, openat, fchmodat
and any *at variants I forgot to appear in future versions
of Guile in some form. I have two proposals, which I will
illustrate with the procedure 'chmod':
* chmod can currently modify permissions of a file.
This OBJECT argument identifying the file can currently
be a filename or a port. Allow a ‘file in a directory’
object as well. This could be created with a procedure
(make-path-at DIRECTORY-PORT FILENAME)
This procedure does not perform any I/O, but rather
constructs what is effectively is a pair (DIRECTORY-PORT
. FILENAME) but with its own type.
* Follow the C API, but with Scheme types.
(chmodat DIRECTORY-PORT FILENAME MODE FLAGS)
where FLAGS can include AT_SYMLINK_NOFOLLOW (from chmod(2)
Linux man page)
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