4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials are licensed and made available
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync under the terms and conditions of the BSD License that accompanies this
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync http://opensource.org/licenses/bsd-license.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1990, 1993
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * The Regents of the University of California. All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * This code is derived from software contributed to Berkeley by
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Chris Torek.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * are met:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. Neither the name of the University nor the names of its contributors
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * may be used to endorse or promote products derived from this software
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * without specific prior written permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync NetBSD: refill.c,v 1.13 2003/08/07 16:43:30 agc Exp
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync refill.c 8.1 (Berkeley) 6/4/93
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync*/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Uefi.h> // REMOVE, For DEBUG only
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/UefiLib.h> // REMOVE, For DEBUG only
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <LibConfig.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/EfiCdefs.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <assert.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <errno.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <stdio.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <stdlib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include "reentrant.h"
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include "local.h"
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef _REENTRANT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern rwlock_t __sfp_lock;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic int lflush(FILE *);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic int
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsynclflush(FILE *fp)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _DIAGASSERT(fp != NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if(fp == NULL) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync errno = EINVAL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (EOF);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((fp->_flags & (__SLBF|__SWR)) == (__SLBF|__SWR))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (__sflush(fp));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (0);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Refill a stdio buffer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Return EOF on eof or error, 0 otherwise.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncint
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__srefill(FILE *fp)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _DIAGASSERT(fp != NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if(fp == NULL) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync errno = EINVAL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (EOF);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* make sure stdio is set up */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (!__sdidinit)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync __sinit();
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a( %d)\n", __func__, fp->_file);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_r = 0; /* largely a convenience for callers */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* SysV does not make this test; take it out for compatibility */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (fp->_flags & __SEOF) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (EOF);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* if not already reading, have to be reading and writing */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((fp->_flags & __SRD) == 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((fp->_flags & __SRW) == 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync errno = EBADF;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_flags |= __SERR; //<dvm> Allows differentiation between errors and EOF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (EOF);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* switch to reading */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (fp->_flags & __SWR) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (__sflush(fp)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (EOF);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_flags &= ~__SWR;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_w = 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_lbfsize = 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_flags |= __SRD;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } else {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * We were reading. If there is an ungetc buffer,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * we must have been reading from that. Drop it,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * restoring the previous buffer (if any). If there
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * is anything in that buffer, return.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (HASUB(fp)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync FREEUB(fp);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((fp->_r = fp->_ur) != 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_p = fp->_up;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (0);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (fp->_bf._base == NULL)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync __smakebuf(fp);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Before reading from a line buffered or unbuffered file,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * flush all line buffered output files, per the ANSI C
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * standard.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (fp->_flags & (__SLBF|__SNBF)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync rwlock_rdlock(&__sfp_lock);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (void) _fwalk(lflush);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync rwlock_unlock(&__sfp_lock);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_p = fp->_bf._base;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_r = (*fp->_read)(fp->_cookie, (char *)fp->_p, fp->_bf._size);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_flags &= ~__SMOD; /* buffer contents are again pristine */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (fp->_r <= 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (fp->_r == 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_flags |= __SEOF;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync else {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_r = 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync fp->_flags |= __SERR;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (EOF);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//Print(L"%a: %d\n", __func__, __LINE__);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (0);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}