1 #define PERL_NO_GET_CONTEXT
2 #define WIN32_LEAN_AND_MEAN
3 #define WIN32IO_IS_STDIO
22 /* Bottom-most level for Win32 case */
26 struct _PerlIO base; /* The generic part */
27 HANDLE h; /* OS level handle */
28 IV refcnt; /* REFCNT for the "fd" this represents */
29 int fd; /* UNIX like file descriptor - index into fdtable */
32 PerlIOWin32 *fdtable[256];
36 PerlIOWin32_popped(pTHX_ PerlIO *f)
38 PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
41 *f = PerlIOBase(f)->next;
44 fdtable[s->fd] = NULL;
49 PerlIOWin32_fileno(pTHX_ PerlIO *f)
51 return PerlIOSelf(f,PerlIOWin32)->fd;
55 PerlIOWin32_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
57 IV code = PerlIOBase_pushed(aTHX_ f,mode,arg,tab);
60 PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
61 s->fd = PerlIO_fileno(PerlIONext(f));
63 PerlIOBase(f)->flags |= PERLIO_F_OPEN;
65 Perl_ck_warner_d(aTHX_
66 packWARN(WARN_EXPERIMENTAL__WIN32_PERLIO),
67 "PerlIO layer ':win32' is experimental");
73 PerlIOWin32_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args)
75 const char *tmode = mode;
76 HANDLE h = INVALID_HANDLE_VALUE;
79 /* Close if already open */
80 if (PerlIOBase(f)->flags & PERLIO_F_OPEN)
81 (*PerlIOBase(f)->tab->Close)(aTHX_ f);
85 char *path = SvPV_nolen(*args);
89 DWORD attr = FILE_ATTRIBUTE_NORMAL;
92 /* sysopen - imode is UNIX-like O_RDONLY etc.
93 - do_open has converted that back to string form in mode as well
94 - perm is UNIX like permissions
100 /* Normal open - decode mode string */
105 access = GENERIC_READ;
106 create = OPEN_EXISTING;
109 access |= GENERIC_WRITE;
110 create = OPEN_ALWAYS;
116 access = GENERIC_WRITE;
117 create = TRUNCATE_EXISTING;
120 access |= GENERIC_READ;
126 access = GENERIC_WRITE;
127 create = OPEN_ALWAYS;
130 access |= GENERIC_READ;
139 else if (*mode == 't')
143 if (*mode || create == -1)
145 SETERRNO(EINVAL,LIB$_INVARG);
148 if (!(access & GENERIC_WRITE))
149 share = FILE_SHARE_READ;
150 h = CreateFile(path,access,share,NULL,create,attr,NULL);
151 if (h == INVALID_HANDLE_VALUE)
153 if (create == TRUNCATE_EXISTING)
154 h = CreateFile(path,access,share,NULL,(create = OPEN_ALWAYS),attr,NULL);
160 h = INVALID_HANDLE_VALUE;
161 if (fd >= 0 && fd <= max_open_fd)
163 PerlIOWin32 *s = fdtable[fd];
168 f = PerlIO_allocate(aTHX);
179 h = GetStdHandle(STD_INPUT_HANDLE);
182 h = GetStdHandle(STD_OUTPUT_HANDLE);
185 h = GetStdHandle(STD_ERROR_HANDLE);
190 if (h != INVALID_HANDLE_VALUE)
191 fd = win32_open_osfhandle((intptr_t) h, PerlIOUnix_oflags(tmode));
196 f = PerlIO_allocate(aTHX);
197 s = PerlIOSelf(PerlIO_push(aTHX_ f,self,tmode,PerlIOArg),PerlIOWin32);
204 if (fd > max_open_fd)
211 /* FIXME: pop layers ??? */
217 PerlIOWin32_read(pTHX_ PerlIO *f, void *vbuf, Size_t count)
219 PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
221 if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
223 if (ReadFile(s->h,vbuf,count,&len,NULL))
229 if (GetLastError() != NO_ERROR)
231 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
237 PerlIOBase(f)->flags |= PERLIO_F_EOF;
244 PerlIOWin32_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count)
246 PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
248 if (WriteFile(s->h,vbuf,count,&len,NULL))
254 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
260 PerlIOWin32_seek(pTHX_ PerlIO *f, Off_t offset, int whence)
262 static const DWORD where[3] = { FILE_BEGIN, FILE_CURRENT, FILE_END };
263 PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
265 DWORD high = (DWORD)(offset >> 32);
269 DWORD low = (DWORD) offset;
270 DWORD res = SetFilePointer(s->h,(LONG)low,(LONG *)&high,where[whence]);
271 if (res != 0xFFFFFFFF || GetLastError() != NO_ERROR)
282 PerlIOWin32_tell(pTHX_ PerlIO *f)
284 PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
286 DWORD res = SetFilePointer(s->h,0,(LONG *)&high,FILE_CURRENT);
287 if (res != 0xFFFFFFFF || GetLastError() != NO_ERROR)
290 return ((Off_t) high << 32) | res;
299 PerlIOWin32_close(pTHX_ PerlIO *f)
301 PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
306 /* This does not do pipes etc. correctly */
307 if (!CloseHandle(s->h))
309 s->h = INVALID_HANDLE_VALUE;
313 PerlIOBase(f)->flags &= ~PERLIO_F_OPEN;
314 return win32_close(s->fd);
321 PerlIOWin32_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *params, int flags)
323 PerlIOWin32 *os = PerlIOSelf(f,PerlIOWin32);
324 HANDLE proc = GetCurrentProcess();
326 if (DuplicateHandle(proc, os->h, proc, &new_h, 0, FALSE, DUPLICATE_SAME_ACCESS))
329 int fd = win32_open_osfhandle((intptr_t) new_h, PerlIOUnix_oflags(PerlIO_modestr(o,mode)));
332 f = PerlIOBase_dup(aTHX_ f, o, params, flags);
335 PerlIOWin32 *fs = PerlIOSelf(f,PerlIOWin32);
340 if (fd > max_open_fd)
356 PERLIO_FUNCS_DECL(PerlIO_win32) = {
357 sizeof(PerlIO_funcs),
374 PerlIOBase_noop_ok, /* flush */
375 PerlIOBase_noop_fail, /* fill */
379 PerlIOBase_setlinebuf,
381 NULL, /* get_bufsiz */
384 NULL, /* set_ptrcnt */