This is the mail archive of the
cygwin@cygwin.com
mailing list for the Cygwin project.
Re: Problems using mmap
- To: cygwin <cygwin at cygwin dot com>
- Subject: Re: Problems using mmap
- From: Corinna Vinschen <cygwin at cygwin dot com>
- Date: Wed, 23 May 2001 16:32:41 +0200
- References: <3B0BAA95.8A8CC347@gmx.de>
On Wed, May 23, 2001 at 02:18:29PM +0200, Ronald Hecht wrote:
> Hi,
>
> I'm trying to compile the attached file, but getting problems with mmap.
> I've read about problems using mmap. Is there a workaround.
>
> Using mmap.exe I#m getting
>
> mkdep: mmap: No such device or address
Your code is way to big. Shrinking the code to a reasonable size
before sending it would ease reading. It would raise my attendance,
too.
> int fd = open(filename, O_RDONLY);
> struct stat st;
>
> if (fd < 0) {
> perror("mkdep: open");
> return;
> }
> fstat(fd, &st);
> mapsize = st.st_size + 2*sizeof(unsigned long);
> mapsize = (mapsize+pagesizem1) & ~pagesizem1;
> map = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, fd, 0);
When mmapping files, the requested mapsize must not exceed
the file size.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin@cygwin.com
Red Hat, Inc.
--
Want to unsubscribe from this list?
Check out: http://cygwin.com/ml/#unsubscribe-simple