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/* Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
Ported to standalone by Joel Sherrill jsherril@redstone-emh2.army.mil,
On-Line Applications Research Corporation.
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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <sysdep.h>
#include <errno.h>
#include <unistd.h>
#include <stddef.h>
#include "filedesc.h"
#include <fcntl.h>
#include <standalone.h>
/* Write NBYTES of BUF to FD. Return the number written, or -1. */
ssize_t
__libc_write (int fd, const void *buf, size_t nbytes)
{
int count;
const char *data = buf;
if (nbytes == 0)
return 0;
if ( !__FD_Is_valid( fd ) || !__FD_Table[ fd ].in_use )
{
__set_errno (EBADF);
return -1;
}
if (buf == NULL)
{
__set_errno (EINVAL);
return -1;
}
if ( !(__FD_Table[ fd ].flags & (O_WRONLY|O_RDWR)) ) /* is it writeable? */
{
__set_errno (EBADF);
return -1;
}
/*
* All open file descriptors are mapped to the console.
*/
for ( count=0 ; count != nbytes ; count++ ) {
if ( _Console_Putc(data[ count ]) == -1 )
return -1;
if ( data[count] == '\n' && _Console_Putc('\r') == -1 )
return -1;
}
return count;
}
weak_alias (__libc_write, __write)
weak_alias (__libc_write, write)
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