mpw/mpw/mpw_close.cpp
Kelvin Sherlock fc04a2b2cb add license
2013-07-30 01:06:19 -04:00

129 lines
2.9 KiB
C++

/*
* Copyright (c) 2013, Kelvin W Sherlock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "mpw.h"
#include "mpw_internal.h"
#include "mpw_errno.h"
#include <cstdio>
#include <algorithm>
#include <memory>
#include <unistd.h>
#include <cpu/defs.h>
#include <cpu/fmem.h>
#include <cpu/cpuModule.h>
#include <macos/errors.h>
#include <toolbox/os.h>
#include <toolbox/os_internal.h>
namespace MPW
{
void ftrap_close(uint16_t trap)
{
// returns an mpw_errno
// close actually checks the error in the File Entry and converts that to unix.
// (sigh)
uint32_t d0 = 0;
uint32_t sp = cpuGetAReg(7);
uint32_t parm = memoryReadLong(sp + 4);
MPWFile f;
f.flags = memoryReadWord(parm);
f.error = memoryReadWord(parm + 2);
f.device = memoryReadLong(parm + 4);
f.cookie = memoryReadLong(parm + 8);
f.count = memoryReadLong(parm + 12);
f.buffer = memoryReadLong(parm + 16);
Log("%04x Close(%08x)\n", trap, parm);
if (!parm)
{
cpuSetDReg(0, kEINVAL);
return;
}
int fd = f.cookie;
int rv = OS::Internal::FDEntry::close(fd);
if (rv < 0)
{
f.error = MacOS::notOpenErr;
d0 = kEINVAL;
}
else
{
f.error = 0;
d0 = 0;
}
#if 0
if (fd < 0 || fd >= OS::Internal::FDTable.size())
{
f.error = OS::notOpenErr;
d0 = kEINVAL;
}
else
{
auto &e = OS::Internal::FDTable[fd];
if (e.refcount == 0)
{
f.error = OS::notOpenErr;
d0 = kEINVAL;
}
else
{
if (--e.refcount == 0)
{
Log(" close(%02x)\n", fd);
::close(fd);
}
f.error = 0;
d0 = 0;
}
}
#endif
memoryWriteWord(f.error, parm + 2);
cpuSetDReg(0, 0);
}
}