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Matt Thomas wrote:

> +       case F_MAXFD:
> +               return (fdp->fd_lastfile);

This is erroneous as it puts the value in errno.
should be

	case F_MAXFD:
		*retval = fdp->fd_lastfile;
		return 0;

instead.

Also, attached are implementations of closefrom and fdwalk, similar to 
solaris versions.

cheers,
mouss

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/*  $Id$    */

/*
 * Written by mouss <usebsd@free.fr>
 * Public domain.
 */

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$Id$");
#endif /* LIBC_SCCS and not lint */

#include <fcntl.h>
#include <stdlib.h>

void
closefrom(int fdlow)
{

	(void) fcntl(fdlow, F_CLOSEM, 0);
	return;
}


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/*  $Id$    */

/*
 * Written by mouss <usebsd@free.fr>
 * Public domain.
 */

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$Id$");
#endif /* LIBC_SCCS and not lint */

#include <fcntl.h>
#include <assert.h>
#include <stdlib.h>


int
fdwalk(int (*func)(void *, int), void *arg)
{
	int fd;
	int maxfd;
	int error;

	_DIAGASSERT(func != NULL);
	
	maxfd = fcntl(0, F_MAXFD, 0);
	if (maxfd < 0) {  /* should never happen */
		return -1;
	}

	for (fd=0; fd <= maxfd; fd++) {
		error = func(arg, fd);
		if (error != 0) {
			return error;
		}
	}
	
	return 0;
}

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*** stdlib.h.orig	Wed Jan  7 09:51:56 2004
--- stdlib.h	Wed Jan  7 09:53:59 2004
***************
*** 289,294 ****
--- 289,299 ----
  #endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
  
  #if defined(_NETBSD_SOURCE)
+ int fdwalk(int (*func)(void *, int), void *arg);
+ void closefrom(int fdlow);
+ #endif /* _NETBSD_SOURCE */
+ 
+ #if defined(_NETBSD_SOURCE)
  qdiv_t	 qdiv __P((quad_t, quad_t));
  #endif
  __END_DECLS

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