glibc/sysdeps/standalone/write.c
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

72 lines
2.0 KiB
C

/* Copyright (C) 1994, 1995, 1996, 1997 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 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)