From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- hurd/fd-read.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 hurd/fd-read.c (limited to 'hurd/fd-read.c') diff --git a/hurd/fd-read.c b/hurd/fd-read.c new file mode 100644 index 0000000..842066c --- /dev/null +++ b/hurd/fd-read.c @@ -0,0 +1,49 @@ +/* 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 +#include +#include +#include +#include + +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; +} -- cgit v1.1