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Roland McGrath
1995-02-18 01:27:10 +00:00
commit 28f540f45b
2263 changed files with 218361 additions and 0 deletions
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49
hurd/fd-read.c Normal file
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/* Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
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 <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/fd.h>
#include <string.h>
error_t
_hurd_fd_read (struct hurd_fd *fd, void *buf, size_t *nbytes)
{
error_t err;
char *data;
mach_msg_type_number_t nread;
error_t readfd (io_t port)
{
return __io_read (port, &data, &nread, -1, *nbytes);
}
data = buf;
if (err = HURD_FD_PORT_USE (fd, _hurd_ctty_input (port, ctty, readfd)))
return err;
if (data != buf)
{
memcpy (buf, data, nread);
__vm_deallocate (__mach_task_self (), (vm_address_t) data, nread);
}
*nbytes = nread;
return 0;
}