mpw/mpw/mpw_close.cpp
2013-05-18 21:44:02 -04:00

103 lines
1.5 KiB
C++

#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);
}
}