bug#27782: patch for mmap and friends

[Matt Wette <matt.wette@gmail.com>]

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On 1/13/23 4:49 PM, Matt Wette wrote:
> Please consider this patch for adding mmap(), munmap() and msync()
>  to libguile/filesys.c.  Included is update for posix.texi and test 
> file mman.test.
> Once included, feature 'mman should be #t.
>
> Matt
Please add the attached file: test-suite/tests/mman.test.

I thought it was included in the patch.  It's the thought that counts, 
right?

Matt



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;;;; mman.test --- Tests for mmap API.    -*- scheme -*-
;;;;
;;;; Copyright 2022 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

(define-module (test-mman)
  #:use-module (test-suite lib)
  #:use-module (test-suite guile-test)
  #:use-module (rnrs bytevectors)
  #:declarative? #f
  )

(define (mmap-test-file)
  (data-file-name "foo.txt"))

(define mmap-test-string "hello, world")

(define (gen-mmap-test-file)
  (with-output-to-file (mmap-test-file)
    (lambda () (display mmap-test-string))))

(when (provided? 'mman)

  (gen-mmap-test-file)

  (with-test-prefix "mman"

    (pass-if "mman 1"
      (let ((bv (mmap 0 #x100)))
        (bytevector-u8-set! bv 0 34)
        (= (bytevector-u8-ref bv 0) 34)))

    ))

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