Date: Sun, 4 May 1997 13:33:24 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: DJ Delorie <dj AT delorie DOT com>
cc: djgpp-workers AT delorie DOT com
Subject: Re: Dynamic pathconf?
In-Reply-To: <199704291235.IAA00413@delorie.com>
Message-ID: <Pine.SUN.3.91.970504133250.9215D-100000@is>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Precedence: bulk


On Tue, 29 Apr 1997, DJ Delorie wrote:

> > If not, then I can post the necessary patches (they are trivial).  Then 
> > we could use `pathconf' as a vehicle to make DJGPP ports of Unix programs 
> > aware of the maximum length of the filename on any given filesystem.  
> 
> Sure, go ahead.

Here they are:

*** src/libc/posix/unistd/pathconf.c~0	Sun Apr  2 00:25:52 1995
--- src/libc/posix/unistd/pathconf.c	Fri May  2 16:04:44 1997
***************
*** 1,6 ****
--- 1,8 ----
+ /* Copyright (C) 1997 DJ Delorie, see COPYING.DJ for details */
  /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
  #include <errno.h>
  #include <unistd.h>
+ #include <fcntl.h>
  #include <limits.h>
  
  long
*************** pathconf(const char *path, int name)
*** 11,18 ****
    case _PC_LINK_MAX:		return LINK_MAX;
    case _PC_MAX_CANON:		return MAX_CANON;
    case _PC_MAX_INPUT:		return MAX_INPUT;
!   case _PC_NAME_MAX:		return NAME_MAX;
!   case _PC_PATH_MAX:		return PATH_MAX;
    case _PC_PIPE_BUF:		return PIPE_BUF;
    case _PC_CHOWN_RESTRICTED:	return _POSIX_CHOWN_RESTRICTED;
    case _PC_NO_TRUNC:		return _POSIX_NO_TRUNC;
--- 13,30 ----
    case _PC_LINK_MAX:		return LINK_MAX;
    case _PC_MAX_CANON:		return MAX_CANON;
    case _PC_MAX_INPUT:		return MAX_INPUT;
!   case _PC_NAME_MAX: case _PC_PATH_MAX:
!     {
!       int name_max, path_max;
!       int e = errno;
! 
!       errno = 0;
!       _get_volume_info (path, &name_max, &path_max, 0);
!       if (errno)
! 	return (name == _PC_NAME_MAX) ? NAME_MAX : PATH_MAX;
!       errno = e;
!       return (name == _PC_NAME_MAX) ? name_max : path_max;
!     }
    case _PC_PIPE_BUF:		return PIPE_BUF;
    case _PC_CHOWN_RESTRICTED:	return _POSIX_CHOWN_RESTRICTED;
    case _PC_NO_TRUNC:		return _POSIX_NO_TRUNC;