kc3-lang/gnulib/lib/dup-safer.c

• Show log

  Commit

• Hash : dd66a62c
  Author :
  Date : 2009-09-01T09:18:16
  

  fchdir: use more consistent macro convention
  
  * lib/fcntl.in.h (_gl_register_fd): Move declaration to unistd.
  * lib/sys_stat.in.h (rpl_fstat): Declare via make-time
  REPLACE_FCHDIR, rather than relying on config.h macros.
  * lib/unistd.in.h (fchdir): Move all fchdir internal declarations
  inside a single make-time REPLACE_FCHDIR block, rather than using
  the config.h FCHDIR_REPLACEMENT.
  * m4/fchdir.m4 (gl_FUNC_FCHDIR): REPLACE_FCHDIR was already
  AC_SUBST'd, also AC_DEFINE it.  Don't define FCHDIR_REPLACEMENT.
  Manage fstat replacement.
  * m4/sys_stat_h.m4 (gl_SYS_STAT_H_DEFAULTS): Pick up
  REPLACE_FCHDIR.
  * modules/sys_stat (Files): Add m4/unistd_h.m4.
  (Makefile.am): Substitute REPLACE_FCHDIR.
  * lib/close.c (rpl_close): Use REPLACE_FCHDIR, not
  FCHDIR_REPLACEMENT.
  * lib/dup-safer.c (dup_safer): Likewise.
  * lib/dup2.c (rpl_dup2): Likewise.
  * lib/dup3.c (rpl_dup3): Likewise.
  * lib/open.c (rpl_open): Likewise.
  
  Signed-off-by: Eric Blake <ebb9@byu.net>
  

Download

• lib/dup-safer.c

• /* Invoke dup, but avoid some glitches.
  
     Copyright (C) 2001, 2004, 2005, 2006, 2009 Free Software
     Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program 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 General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  /* Written by Paul Eggert.  */
  
  #include <config.h>
  
  #include "unistd-safer.h"
  
  #include <fcntl.h>
  
  #include <unistd.h>
  
  /* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
     STDERR_FILENO.  */
  
  int
  dup_safer (int fd)
  {
  #if defined F_DUPFD && !REPLACE_FCHDIR
    return fcntl (fd, F_DUPFD, STDERR_FILENO + 1);
  #else
    /* fd_safer calls us back, but eventually the recursion unwinds and
       does the right thing.  */
    return fd_safer (dup (fd));
  #endif
  }
  

Download