mirror of
https://github.com/ksherlock/mpw.git
synced 2024-06-07 11:29:29 +00:00
150 lines
2.9 KiB
C++
150 lines
2.9 KiB
C++
#include "mpw.h"
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#include "mpw_internal.h"
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#include "mpw_errno.h"
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <cstdio>
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#include <cstring>
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#include <cerrno>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/paths.h>
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#include <cpu/defs.h>
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#include <cpu/fmem.h>
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#include <cpu/cpuModule.h>
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#include <toolbox/toolbox.h>
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#include <toolbox/os.h>
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#include <toolbox/os_internal.h>
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/*
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* access return errors are |= 0x40000000. Not entirely sure why...
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* may return an errno or an oserr, too, apparently.
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*/
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namespace MPW
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{
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uint32_t ftrap_open(uint32_t name, uint32_t parm)
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{
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uint32_t d0;
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int fd;
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std::string sname;
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MPWFile f;
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int nativeFlags;
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std::memset(&f, 0, sizeof(f));
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f.flags = memoryReadWord(parm);
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nativeFlags = 0;
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switch (f.flags & 0x03)
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{
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case 0x01:
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nativeFlags = O_RDONLY;
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break;
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case 0x02:
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nativeFlags = O_WRONLY;
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break;
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case 0x00: // ????
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case 0x03:
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nativeFlags = O_RDWR;
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break;
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}
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if (f.flags & kO_APPEND) nativeFlags |= O_APPEND;
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if (f.flags & kO_CREAT) nativeFlags |= O_CREAT;
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if (f.flags & kO_TRUNC) nativeFlags |= O_TRUNC;
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if (f.flags & kO_EXCL) nativeFlags |= O_EXCL;
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sname = ToolBox::ReadCString(name, true);
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Log(" open(%s, %04x)\n", sname.c_str(), f.flags);
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// TODO -- can you create a resource file like this?
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if (f.flags & kO_RSRC)
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sname.append(_PATH_RSRCFORKSPEC);
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if (f.flags & kO_CREAT)
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fd = ::open(sname.c_str(), nativeFlags, 0666);
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else
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fd = ::open(sname.c_str(), nativeFlags);
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if (fd < 0)
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{
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// return an errno.
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d0 = 0x40000000 | errno_to_errno(errno);
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f.error = -36; // ioErr ... whatever.
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f.cookie = 0;
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}
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else
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{
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d0 = 0;
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f.error = 0;
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f.cookie = fd;
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// adjust the binary flags...
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// most apps are good about this but dumpobj doesn't set O_BINARY (but should)
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// and MPW Assembler sets O_BINARY (but shouldn't)
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if (OS::IsTextFile(sname)) f.flags &= ~kO_BINARY;
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if (OS::IsBinaryFile(sname)) f.flags |= kO_BINARY;
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if (f.flags & kO_RSRC) f.flags |= kO_BINARY;
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auto &e = OS::Internal::FDEntry::allocate(fd);
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e.text = !(f.flags & kO_BINARY);
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e.resource = f.flags & kO_RSRC;
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}
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memoryWriteWord(f.flags, parm + 0);
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memoryWriteWord(f.error, parm + 2);
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memoryWriteLong(f.cookie, parm + 8);
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return d0;
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}
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void ftrap_access(uint16_t trap)
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{
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// open a file, rename a file, or delete a file.
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std::string sname;
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uint32_t d0;
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uint32_t sp = cpuGetAReg(7);
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// hmmm not sure if 3 or 4 parameters.
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uint32_t name = memoryReadLong(sp + 4);
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uint32_t op = memoryReadLong(sp + 8);
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uint32_t parm = memoryReadLong(sp + 12);
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Log("%04x Access(%08x, %04x, %08x)\n", trap, name, op, parm);
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switch (op)
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{
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case kF_OPEN:
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d0 = ftrap_open(name, parm);
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break;
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default:
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d0 = 0x40000000 | kEINVAL;
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fprintf(stderr, "faccess - unsupported op %04x\n", op);
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}
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cpuSetDReg(0, d0);
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}
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} |