kernel/lib/stdio/close.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5  *  Copyright (C) 2009  Martin 'povik' Poviser (martin.povik@gmail.com)
   6  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   7  *
   8  *  This program is free software: you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation, either version 3 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22
  23 #include <system.h>
  24 #include <file.h>
  25 #include <fd.h>
  26 #include <net/socket.h>
  27 #include <pipe.h>
  28 #include <cache.h>
  29
  30 int close (int fd)
  31 {
  32         fd_t *f = fd_get (fd);
  33
  34         if (!f)
  35                 return 0;
  36
  37         if (f->flags & FD_SOCK) // socket close
  38                 sclose (fd);
  39
  40         if (f->flags & FD_PIPE) // pipe close
  41                 pipe_close (fd);
  42
  43         f->id = 0;
  44         f->flags = 0;
  45         f->e = 0;
  46
  47         if (f->s)
  48                 cache_closebyptr (f->s);
  49
  50         /* delete old file descriptor from fd_list */
  51         f->next->prev = f->prev;
  52         f->prev->next = f->next;
  53
  54         return 1;
  55 }
  56