revoke.c

Glibc 2.3.2源代码(解压后有100多M)

/* Revoke the access of all descriptors currently open on a file.  AIX version.
   Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C 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 2.1 of the License, or (at your option) any later version.

   The GNU C 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 the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <fcntl.h>
#include <unistd.h>
#include <errno.h>

extern int frevoke (int fdes);

int
revoke (file)
     const char *file;
{
  int fd;
  int res;

  fd = open (file, O_RDONLY);
  if (fd < 0)
    return -1;

  res = frevoke (fd);
  (void) close (fd);

  return res;
}