kernel/lib/stdio/close.c

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