kern_descrip.c

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/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 All rights reserved.

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 permitted provided that the following conditions are met:

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 conditions, the following disclaimer and the list of authors.  Redistributions in binary
 form must reproduce the above copyright notice, this list of conditions, the following
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 with the distribution. Neither the name of the UbixOS Project nor the names of its
 contributors may be used to endorse or promote products derived from this software
 without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 $Id$

*****************************************************************************************/

#include <sys/kern_descrip.h>
#include <ubixos/types.h>
#include <sys/sysproto.h>
#include <sys/thread.h>
#include <lib/kprintf.h>
#include <ubixos/endtask.h>
#include <lib/kmalloc.h>
#include <assert.h>

int fcntl(struct thread *td, struct fcntl_args *uap) {
  struct file *fp = 0x0;

  if (td->o_files[uap->fd] == 0x0) {
    kprintf("ERROR!!!\n");
    return(-1);
    }

  fp = (struct file *)td->o_files[uap->fd];
  switch (uap->cmd) {
    case 3:
      td->td_retval[0] = fp->f_flag;
      break;
    case 4:
       fp->f_flag &= ~FCNTLFLAGS;
       fp->f_flag |= FFLAGS(uap->arg & ~O_ACCMODE) & FCNTLFLAGS;
       break;
    default:
      kprintf("ERROR DEFAULT");
    }

  return(0x0);
  }

int falloc(struct thread *td,struct file **resultfp, int *resultfd) {
  struct file *fp = 0x0;
  int i = 0;

  fp = (struct file *)kmalloc(sizeof(struct file));
  /* First 5 Descriptors Are Reserved */
  for (i = 5;i<1024;i++) {
    if (td->o_files[i] == 0x0) {
       td->o_files[i] = (uInt32)fp;
       if (resultfd)
         *resultfd = i;
       if (resultfp)
         *resultfp = fp;
      break;
      }
    } 
  return(0x0);
  }

int close(struct thread *td,struct close_args *uap) {
  kfree((void *)td->o_files[uap->fd]);
  td->o_files[uap->fd] = 0x0;
  td->td_retval[0] = 0x0;  
  return(0x0);
  }

  /* HACK */
int getdtablesize(struct thread *td, struct getdtablesize_args *uap) {
  td->td_retval[0] = 20;
  return (0);
  }

/* HACK */
int fstat(struct thread *td,struct fstat_args *uap) {
  struct file *fp = 0x0;

  fp = _current->td.o_files[uap->fd];
  uap->sb->st_mode    = 0x2180;
  uap->sb->st_blksize = 0x1000;
  return(0x0);
  }

int ioctl(struct thread *td, struct ioctl_args *uap) {
  td->td_retval[0] = 0x0;
  return(0x0);
  }



/***
 END
 ***/

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