Back to index

glibc  2.9
revoke.c
Go to the documentation of this file.
00001 /* Revoke the access of all descriptors currently open on a file.  Hurd version
00002    Copyright (C) 1999 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <unistd.h>
00021 #include <errno.h>
00022 #include <hurd.h>
00023 
00024 int
00025 revoke (file_name)
00026      const char *file_name;
00027 {
00028   error_t err;
00029   file_t file = __file_name_lookup (file_name, 0, 0);
00030 
00031   if (file == MACH_PORT_NULL)
00032     return -1;
00033 
00034   err = __io_revoke (file);
00035   __mach_port_deallocate (__mach_task_self (), file);
00036 
00037   if (err)
00038     return __hurd_fail (err);
00039   return 0;
00040 }