3 Copyright 1996, 1997, 1998, 1999, 2000 Cygnus Solutions.
5 This file is part of Cygwin.
7 This software is a copyrighted work licensed under the terms of the
8 Cygwin license. Please consult the file "CYGWIN_LICENSE" for
14 #include <sys/ioctl.h>
18 Code is located in fhandler.cc unless another file name is given.
20 fhandler_base normal I/O
23 fhandler_serial Adds vmin and vtime.
24 fhandler_dev_null Not really I/O
25 fhandler_dev_zero Faked
27 fhandler_dev_raw (fhandler_raw.cc)
28 fhandler_dev_floppy (fhandler_floppy.cc)
29 fhandler_dev_tape (fhandler_tape.cc)
32 fhandler_socket (fhandler_socket.cc)
34 fhandler_tty_slave (tty.cc)
35 fhandler_pty_master (tty.cc)
36 fhandler_tty_master (tty.cc)
38 fhandler_console Out with ansi control. (console.cc)
40 fhandler_windows Windows messages I/O (fhandler_windows.cc)
42 fhandler_dev_random /dev/[u]random implementation (fhandler_random.cc)
44 fhandler_dev_mem /dev/mem implementation (fhandler_mem.cc)
46 fhandler_dev_clipboard /dev/clipboard implementation (fhandler_clipboard.cc)
48 fhandler_proc Interesting possibility, not implemented yet
53 FH_RBINARY = 0x00001000, /* binary read mode */
54 FH_WBINARY = 0x00002000, /* binary write mode */
55 FH_CLOEXEC = 0x00004000, /* close-on-exec */
56 FH_RBINSET = 0x00008000, /* binary read mode has been explicitly set */
57 FH_WBINSET = 0x00010000, /* binary write mode has been explicitly set */
58 FH_APPEND = 0x00020000, /* always append */
59 FH_ASYNC = 0x00040000, /* async I/O */
60 FH_HADEOF = 0x00080000, /* EOF seen */
62 FH_SYMLINK = 0x00100000, /* is a symlink */
63 FH_EXECABL = 0x00200000, /* file looked like it would run:
64 * ends in .exe or .bat or begins with #! */
65 FH_W95LSBUG= 0x00400000, /* set when lseek is called as a flag that
66 * _write should check if we've moved beyond
67 * EOF, zero filling if so. */
68 FH_NOFRNAME= 0x00800000, /* Set if shouldn't free unix_path_name_ and
69 windows_path_name_ on destruction. */
70 FH_NOEINTR = 0x01000000, /* Set if I/O should be uninterruptible. */
71 FH_FFIXUP = 0x02000000, /* Set if need to fixup after fork. */
72 FH_LOCAL = 0x04000000, /* File is unix domain socket */
73 FH_FIFO = 0x08000000, /* File is FIFO */
74 FH_HASACLS = 0x40000000, /* True if fs of file has ACLS */
79 FH_CONSOLE = 0x00000001, /* is a console */
80 FH_CONIN = 0x00000002, /* console input */
81 FH_CONOUT = 0x00000003, /* console output */
82 FH_TTYM = 0x00000004, /* is a tty master */
83 FH_TTYS = 0x00000005, /* is a tty slave */
84 FH_PTYM = 0x00000006, /* is a pty master */
85 FH_SERIAL = 0x00000007, /* is a serial port */
86 FH_PIPE = 0x00000008, /* is a pipe */
87 FH_PIPER = 0x00000009, /* read end of a pipe */
88 FH_PIPEW = 0x0000000a, /* write end of a pipe */
89 FH_SOCKET = 0x0000000b, /* is a socket */
90 FH_WINDOWS = 0x0000000c, /* is a window */
92 FH_SLOW = 0x00000010, /* "slow" device if below this */
95 FH_DISK = 0x00000010, /* is a disk */
96 FH_FLOPPY = 0x00000011, /* is a floppy */
97 FH_TAPE = 0x00000012, /* is a tape */
98 FH_NULL = 0x00000013, /* is the null device */
99 FH_ZERO = 0x00000014, /* is the zero device */
100 FH_RANDOM = 0x00000015, /* is a random device */
101 FH_MEM = 0x00000016, /* is a mem device */
102 FH_CLIPBOARD = 0x00000017, /* is a clipbaord device */
104 FH_NDEV = 0x00000018, /* Maximum number of devices */
105 FH_DEVMASK = 0x00000fff, /* devices live here */
109 #define FHDEVN(n) ((n) & FH_DEVMASK)
110 #define FHISSETF(x) __ISSETF (this, x, FH)
111 #define FHSETF(x) __SETF (this, x, FH)
112 #define FHCLEARF(x) __CLEARF (this, x, FH)
113 #define FHCONDSETF(n, x) __CONDSETF(n, this, x, FH)
117 extern const char *windows_device_names[];
118 extern struct __cygwin_perfile *perfile_table;
119 #define __fmode (*(user_data->fmode_ptr))
123 class fhandler_disk_file;
135 unsigned long namehash_; /* hashed filename, used as inode num */
137 /* Full unix path name of this file */
138 /* File open flags from open () and fcntl () calls */
142 char *rabuf; /* used for crlf conversion in text files */
148 char *unix_path_name_;
149 char *win32_path_name_;
152 void set_name (const char * unix_path, const char * win32_path = NULL,
155 virtual fhandler_base& operator =(fhandler_base &x);
156 fhandler_base (DWORD dev, const char *name = 0, int unit = 0);
157 virtual ~fhandler_base ();
159 /* Non-virtual simple accessor functions. */
160 void set_io_handle (HANDLE x) { io_handle = x; }
162 void set_cb (size_t size) { cb = size; }
163 DWORD get_device () { return status & FH_DEVMASK; }
164 virtual int get_unit () { return 0; }
165 virtual BOOL is_slow () { return get_device () < FH_SLOW; }
167 int get_access () { return access_; }
168 void set_access (int x) { access_ = x; }
170 int get_async () { return FHISSETF (ASYNC); }
171 void set_async (int x) { FHCONDSETF (x, ASYNC); }
173 int get_flags () { return openflags_; }
174 void set_flags (int x) { openflags_ = x; }
176 int get_w_binary () { return FHISSETF (WBINARY); }
177 int get_r_binary () { return FHISSETF (RBINARY); }
179 int get_w_binset () { return FHISSETF (WBINSET); }
180 int get_r_binset () { return FHISSETF (RBINSET); }
182 void set_w_binary (int b) { FHCONDSETF (b, WBINARY); FHSETF (WBINSET); }
183 void set_r_binary (int b) { FHCONDSETF (b, RBINARY); FHSETF (RBINSET); }
185 int get_default_fmode (int flags);
187 int get_r_no_interrupt () { return FHISSETF (NOEINTR); }
188 void set_r_no_interrupt (int b) { FHCONDSETF (b, NOEINTR); }
190 int get_close_on_exec () { return FHISSETF (CLOEXEC); }
191 int set_close_on_exec_flag (int b) { return FHCONDSETF (b, CLOEXEC); }
193 void set_check_win95_lseek_bug (int b = 1) { FHCONDSETF (b, W95LSBUG); }
194 int get_check_win95_lseek_bug () { return FHISSETF (W95LSBUG); }
196 int get_need_fork_fixup () { return FHISSETF (FFIXUP); }
197 void set_need_fork_fixup () { FHSETF (FFIXUP); }
199 virtual void set_close_on_exec (int val);
201 virtual void fixup_before_fork_exec (DWORD) {}
202 virtual void fixup_after_fork (HANDLE);
203 virtual void fixup_after_exec (HANDLE) {}
205 int get_symlink_p () { return FHISSETF (SYMLINK); }
206 void set_symlink_p (int val) { FHCONDSETF (val, SYMLINK); }
207 void set_symlink_p () { FHSETF (SYMLINK); }
209 int get_socket_p () { return FHISSETF (LOCAL); }
210 void set_socket_p (int val) { FHCONDSETF (val, LOCAL); }
211 void set_socket_p () { FHSETF (LOCAL); }
213 int get_execable_p () { return FHISSETF (EXECABL); }
214 void set_execable_p (int val) { FHCONDSETF (val, EXECABL); }
215 void set_execable_p () { FHSETF (EXECABL); }
217 int get_append_p () { return FHISSETF (APPEND); }
218 void set_append_p (int val) { FHCONDSETF (val, APPEND); }
219 void set_append_p () { FHSETF (APPEND); }
221 int get_readahead_valid () { return raixget < ralen; }
222 int puts_readahead (const char *s, size_t len = (size_t) -1);
223 int put_readahead (char value);
225 int get_readahead ();
226 int peek_readahead (int queryput = 0);
228 int eat_readahead (int n);
230 void set_readahead_valid (int val, int ch = -1);
232 int get_readahead_into_buffer (char *buf, size_t buflen);
234 int has_acls () { return FHISSETF (HASACLS); }
235 void set_has_acls (int val) { FHCONDSETF (val, HASACLS); }
237 int no_free_names () { return FHISSETF (NOFRNAME); }
238 void set_no_free_names (int val) { FHCONDSETF (val, NOFRNAME); }
239 void set_no_free_names () { FHSETF (NOFRNAME); }
241 const char *get_name () { return unix_path_name_; }
242 const char *get_win32_name () { return win32_path_name_; }
243 unsigned long get_namehash () { return namehash_; }
245 virtual void hclose (HANDLE h) {CloseHandle (h);}
246 virtual void set_inheritance (HANDLE &h, int not_inheriting,
247 const char *name = NULL);
249 /* fixup fd possibly non-inherited handles after fork */
250 void fork_fixup (HANDLE parent, HANDLE &h, const char *name);
252 /* Potentially overridden virtual functions. */
253 virtual int open (const char *, int flags, mode_t mode = 0)
255 return open (flags, mode);
257 virtual int open (int flags, mode_t mode = 0);
258 virtual int close ();
259 virtual int fstat (struct stat *buf) { return stat_dev (get_device (), get_unit (), get_namehash (), buf); }
260 virtual int ioctl (unsigned int cmd, void *);
261 virtual int fcntl (int cmd, void *);
262 virtual char const * ttyname () { return get_name(); }
263 virtual int read (void *ptr, size_t len);
264 virtual int write (const void *ptr, size_t len);
265 virtual off_t lseek (off_t offset, int whence);
266 virtual int lock (int, struct flock *);
267 virtual void dump ();
268 virtual int dup (fhandler_base *child);
270 virtual HANDLE mmap (caddr_t *addr, size_t len, DWORD access,
271 int flags, off_t off);
272 virtual int munmap (HANDLE h, caddr_t addr, size_t len);
273 virtual int msync (HANDLE h, caddr_t addr, size_t len, int flags);
275 void *operator new (size_t, void *p) {return p;}
277 virtual void init (HANDLE, DWORD, mode_t);
279 virtual int tcflush (int);
280 virtual int tcsendbreak (int);
281 virtual int tcdrain ();
282 virtual int tcflow (int);
283 virtual int tcsetattr (int a, const struct termios *t);
284 virtual int tcgetattr (struct termios *t);
285 virtual int tcsetpgrp (const pid_t pid);
286 virtual int tcgetpgrp ();
287 virtual int is_tty () { return 0; }
288 virtual BOOL is_device () { return TRUE; }
289 virtual char *ptsname () { return NULL;}
290 virtual class fhandler_socket *is_socket () { return 0; }
291 virtual class fhandler_console *is_console () { return 0; }
292 virtual int is_windows () {return 0; }
294 virtual int raw_read (void *ptr, size_t ulen);
295 virtual int raw_write (const void *ptr, size_t ulen);
297 /* Virtual accessor functions to hide the fact
298 that some fd's have two handles. */
299 virtual HANDLE get_handle () const { return io_handle; }
300 virtual HANDLE get_io_handle () const { return io_handle; }
301 virtual HANDLE get_output_handle () const { return io_handle; }
302 virtual BOOL hit_eof () {return FALSE;}
303 virtual select_record *select_read (select_record *s);
304 virtual select_record *select_write (select_record *s);
305 virtual select_record *select_except (select_record *s);
306 virtual int ready_for_read (int fd, DWORD howlong, int ignra);
307 virtual const char * get_native_name ()
309 return windows_device_names[FHDEVN (status)];
311 virtual int bg_check (int) {return 1;}
312 void clear_readahead ()
314 raixput = raixget = ralen = rabuflen = 0;
317 void operator delete (void *);
320 class fhandler_socket: public fhandler_base
324 struct _WSAPROTOCOL_INFOA *prot_info_ptr;
327 fhandler_socket (const char *name = 0);
329 int get_socket () const { return (int) get_handle(); }
330 fhandler_socket * is_socket () { return this; }
331 int write (const void *ptr, size_t len);
332 int read (void *ptr, size_t len);
333 int ioctl (unsigned int cmd, void *);
334 int fcntl (int cmd, void *);
335 off_t lseek (off_t, int) { return 0; }
337 void hclose (HANDLE) {close ();}
338 int dup (fhandler_base *child);
340 virtual void fixup_before_fork_exec (DWORD);
341 void fixup_after_fork (HANDLE);
342 void fixup_after_exec (HANDLE parent) { fixup_after_fork (parent); }
344 select_record *select_read (select_record *s);
345 select_record *select_write (select_record *s);
346 select_record *select_except (select_record *s);
347 int ready_for_read (int fd, DWORD howlong, int ignra);
348 int get_addr_family () {return addr_family;}
349 void set_addr_family (int af) {addr_family = af;}
352 class fhandler_pipe: public fhandler_base
355 fhandler_pipe (const char *name = 0, DWORD devtype = FH_PIPE);
356 off_t lseek (off_t offset, int whence);
357 /* This strange test is due to the fact that we can't rely on
358 Windows shells to "do the right thing" with pipes. Apparently
359 the can keep one end of the pipe open when it shouldn't be. */
360 BOOL is_slow () {return os_being_run == winNT;}
361 select_record *select_read (select_record *s);
362 select_record *select_write (select_record *s);
363 select_record *select_except (select_record *s);
364 int ready_for_read (int fd, DWORD howlong, int ignra);
367 class fhandler_dev_raw: public fhandler_base
374 int eom_detected : 1;
375 int eof_detected : 1;
376 int lastblk_to_read : 1;
382 virtual void clear (void);
383 virtual int writebuf (void);
385 /* returns not null, if `win_error' determines an end of media condition */
386 virtual int is_eom(int win_error) = 0;
387 /* returns not null, if `win_error' determines an end of file condition */
388 virtual int is_eof(int win_error) = 0;
390 fhandler_dev_raw (DWORD dev, const char *name, int unit);
393 ~fhandler_dev_raw (void);
395 int open (const char *path, int flags, mode_t mode = 0);
398 int raw_read (void *ptr, size_t ulen);
399 int raw_write (const void *ptr, size_t ulen);
401 int fstat (struct stat *buf);
403 int dup (fhandler_base *child);
405 int ioctl (unsigned int cmd, void *buf);
407 void fixup_after_fork (HANDLE);
408 void fixup_after_exec (HANDLE parent) { fixup_after_fork (parent); }
411 class fhandler_dev_floppy: public fhandler_dev_raw
414 virtual int is_eom (int win_error);
415 virtual int is_eof (int win_error);
418 fhandler_dev_floppy (const char *name, int unit);
420 virtual int open (const char *path, int flags, mode_t mode = 0);
421 virtual int close (void);
423 virtual off_t lseek (off_t offset, int whence);
425 virtual int ioctl (unsigned int cmd, void *buf);
428 class fhandler_dev_tape: public fhandler_dev_raw
434 virtual void clear (void);
436 virtual int is_eom (int win_error);
437 virtual int is_eof (int win_error);
440 fhandler_dev_tape (const char *name, int unit);
442 virtual int open (const char *path, int flags, mode_t mode = 0);
443 virtual int close (void);
445 virtual off_t lseek (off_t offset, int whence);
447 virtual int fstat (struct stat *buf);
449 virtual int dup (fhandler_base *child);
451 virtual int ioctl (unsigned int cmd, void *buf);
454 int tape_write_marks (int marktype, DWORD len);
455 int tape_get_pos (unsigned long *ret);
456 int tape_set_pos (int mode, long count, BOOLEAN sfm_func = FALSE);
457 int tape_erase (int mode);
458 int tape_prepare (int action);
459 BOOLEAN tape_get_feature (DWORD parm);
460 int tape_get_blocksize (long *min, long *def, long *max, long *cur);
461 int tape_set_blocksize (long count);
462 int tape_status (struct mtget *get);
463 int tape_compression (long count);
466 /* Standard disk file */
468 class fhandler_disk_file: public fhandler_base
471 int check_execable_p (const char *path);
474 fhandler_disk_file (const char *name);
476 int open (const char *path, int flags, mode_t mode = 0);
477 int open (path_conv& real_path, int flags, mode_t mode);
479 int lock (int, struct flock *);
480 BOOL is_device () { return FALSE; }
481 int fstat (struct stat *buf);
483 HANDLE mmap (caddr_t *addr, size_t len, DWORD access, int flags, off_t off);
484 int munmap (HANDLE h, caddr_t addr, size_t len);
485 int msync (HANDLE h, caddr_t addr, size_t len, int flags);
488 class fhandler_serial: public fhandler_base
491 unsigned int vmin_; /* from termios */
492 unsigned int vtime_; /* from termios */
496 int overlapped_armed;
497 OVERLAPPED io_status;
500 fhandler_serial (const char *name, DWORD devtype = FH_SERIAL, int unit = 0);
502 int open (const char *path, int flags, mode_t mode);
504 void init (HANDLE h, DWORD a, mode_t flags);
505 void overlapped_setup ();
506 int dup (fhandler_base *child);
507 int raw_read (void *ptr, size_t ulen);
508 int raw_write (const void *ptr, size_t ulen);
509 int tcsendbreak (int);
512 int tcsetattr (int a, const struct termios *t);
513 int tcgetattr (struct termios *t);
514 off_t lseek (off_t, int) { return 0; }
517 int is_tty () { return 1; }
518 void fixup_after_fork (HANDLE parent);
519 void fixup_after_exec (HANDLE);
521 /* We maintain a pgrp so that tcsetpgrp and tcgetpgrp work, but we
522 don't use it for permissions checking. fhandler_tty_slave does
523 permission checking on pgrps. */
524 virtual int tcgetpgrp () { return pgrp_; }
525 virtual int tcsetpgrp (const pid_t pid) { pgrp_ = pid; return 0; }
526 select_record *select_read (select_record *s);
527 select_record *select_write (select_record *s);
528 select_record *select_except (select_record *s);
529 int ready_for_read (int fd, DWORD howlong, int ignra);
532 #define acquire_output_mutex(ms) \
533 __acquire_output_mutex (__PRETTY_FUNCTION__, __LINE__, ms);
535 #define release_output_mutex() \
536 __release_output_mutex (__PRETTY_FUNCTION__, __LINE__);
540 class fhandler_termios: public fhandler_base
543 HANDLE output_handle;
544 virtual void doecho (const void *, DWORD) {};
545 virtual int accept_input () {return 1;};
548 fhandler_termios (DWORD dev, const char *name = 0, int unit = 0) :
549 fhandler_base (dev, name, unit)
553 HANDLE get_output_handle () const { return output_handle; }
554 int line_edit (const char *rptr, int nread, int always_accept = 0);
555 void set_output_handle (HANDLE h) { output_handle = h; }
556 void tcinit (tty_min *this_tc, int force = FALSE);
557 virtual int is_tty () { return 1; }
559 int tcsetpgrp (int pid);
560 void set_ctty (int ttynum, int flags);
561 int bg_check (int sig);
562 virtual DWORD __acquire_output_mutex (const char *fn, int ln, DWORD ms) {return 1;}
563 virtual void __release_output_mutex (const char *fn, int ln) {}
566 /* This is a input and output console handle */
567 class fhandler_console: public fhandler_termios
573 // enum {normal, gotesc, gotsquare, gotarg1, gotcommand} state;
592 void clear_screen (int, int, int, int);
593 void scroll_screen (int, int, int, int, int, int);
594 void cursor_set (BOOL, int, int);
595 void cursor_get (int *, int *);
596 void cursor_rel (int, int);
597 const unsigned char * write_normal (unsigned const char*, unsigned const char *);
598 void char_command (char);
599 int output_tcsetattr (int a, const struct termios *t);
602 int igncr_enabled ();
603 int input_tcsetattr (int a, const struct termios *t);
604 void set_cursor_maybe ();
608 fhandler_console (const char *name);
610 fhandler_console* is_console () { return this; }
612 int open (const char *path, int flags, mode_t mode = 0);
614 int write (const void *ptr, size_t len);
615 void doecho (const void *str, DWORD len) { (void) write (str, len); }
616 int read (void *ptr, size_t len);
620 int tcsetattr (int a, const struct termios *t);
621 int tcgetattr (struct termios *t);
623 /* Special dup as we must dup two handles */
624 int dup (fhandler_base *child);
626 int ioctl (unsigned int cmd, void *);
627 void init (HANDLE, DWORD, mode_t);
629 select_record *select_read (select_record *s);
630 select_record *select_write (select_record *s);
631 select_record *select_except (select_record *s);
632 int ready_for_read (int fd, DWORD howlong, int ignra);
633 void fixup_after_exec (HANDLE);
634 void set_close_on_exec (int val);
635 void fixup_after_fork (HANDLE parent);
636 void set_input_state ();
639 class fhandler_tty_common: public fhandler_termios
642 fhandler_tty_common (DWORD dev, const char *name = 0, int unit = 0) :
643 fhandler_termios (dev, name, unit),
648 HANDLE output_done_event; // Raised by master when tty's output buffer
649 // written. Write status in tty::write_retval.
650 HANDLE ioctl_request_event; // Raised by slave to perform ioctl() request.
651 // Ioctl() request in tty::cmd/arg.
652 HANDLE ioctl_done_event; // Raised by master on ioctl() completion.
653 // Ioctl() status in tty::ioctl_retval.
655 HANDLE inuse; // used to indicate that a tty is in use
658 DWORD __acquire_output_mutex (const char *fn, int ln, DWORD ms);
659 void __release_output_mutex (const char *fn, int ln);
661 int ttynum; // Master tty num.
662 virtual int dup (fhandler_base *child);
664 tty *get_ttyp () { return (tty *)tc; }
665 int get_unit () { return ttynum; }
668 void set_close_on_exec (int val);
669 void fixup_after_fork (HANDLE parent);
670 select_record *select_read (select_record *s);
671 select_record *select_write (select_record *s);
672 select_record *select_except (select_record *s);
673 int ready_for_read (int fd, DWORD howlong, int ignra);
676 class fhandler_tty_slave: public fhandler_tty_common
680 fhandler_tty_slave (const char *name);
681 fhandler_tty_slave (int, const char *name);
683 int open (const char *path, int flags, mode_t mode = 0);
684 int write (const void *ptr, size_t len);
685 int read (void *ptr, size_t len);
686 void init (HANDLE, DWORD, mode_t);
688 int tcsetattr (int a, const struct termios *t);
689 int tcgetattr (struct termios *t);
691 int ioctl (unsigned int cmd, void *);
693 off_t lseek (off_t, int) { return 0; }
696 class fhandler_pty_master: public fhandler_tty_common
698 int pktmode; // non-zero if pty in a packet mode.
700 int need_nl; // Next read should start with \n
703 fhandler_pty_master (const char *name, DWORD devtype = FH_PTYM, int unit = -1);
705 int process_slave_output (char *buf, size_t len, int pktmode_on);
706 void doecho (const void *str, DWORD len);
708 int open (const char *path, int flags, mode_t mode = 0);
709 int write (const void *ptr, size_t len);
710 int read (void *ptr, size_t len);
713 int tcsetattr (int a, const struct termios *t);
714 int tcgetattr (struct termios *t);
716 int ioctl (unsigned int cmd, void *);
718 off_t lseek (off_t, int) { return 0; }
721 void set_close_on_exec (int val);
725 class fhandler_tty_master: public fhandler_pty_master
729 fhandler_tty_master (const char *name, int unit);
730 fhandler_console *console; // device handler to perform real i/o.
731 HANDLE hThread; // process_output thread handle.
735 void fixup_after_fork (HANDLE parent);
736 void fixup_after_exec (HANDLE);
739 class fhandler_dev_null: public fhandler_base
742 fhandler_dev_null (const char *name);
745 select_record *select_read (select_record *s);
746 select_record *select_write (select_record *s);
747 select_record *select_except (select_record *s);
750 class fhandler_dev_zero: public fhandler_base
753 fhandler_dev_zero (const char *name);
754 int open (const char *path, int flags, mode_t mode = 0);
755 int write (const void *ptr, size_t len);
756 int read (void *ptr, size_t len);
757 off_t lseek (off_t offset, int whence);
763 class fhandler_dev_random: public fhandler_base
767 HCRYPTPROV crypt_prov;
770 BOOL crypt_gen_random (void *ptr, size_t len);
771 int pseudo_write (const void *ptr, size_t len);
772 int pseudo_read (void *ptr, size_t len);
775 fhandler_dev_random (const char *name, int unit);
776 int get_unit () { return unit; }
777 int open (const char *path, int flags, mode_t mode = 0);
778 int write (const void *ptr, size_t len);
779 int read (void *ptr, size_t len);
780 off_t lseek (off_t offset, int whence);
782 int dup (fhandler_base *child);
787 class fhandler_dev_mem: public fhandler_base
795 fhandler_dev_mem (const char *name, int unit);
796 ~fhandler_dev_mem (void);
798 int open (const char *path, int flags, mode_t mode = 0);
799 int write (const void *ptr, size_t ulen);
800 int read (void *ptr, size_t ulen);
801 off_t lseek (off_t offset, int whence);
803 int fstat (struct stat *buf);
804 int dup (fhandler_base *child);
806 HANDLE mmap (caddr_t *addr, size_t len, DWORD access, int flags, off_t off);
807 int munmap (HANDLE h, caddr_t addr, size_t len);
808 int msync (HANDLE h, caddr_t addr, size_t len, int flags);
813 class fhandler_dev_clipboard: public fhandler_base
816 fhandler_dev_clipboard (const char *name);
817 int is_windows (void) { return 1; }
818 int open (const char *path, int flags, mode_t mode = 0);
819 int write (const void *ptr, size_t len);
820 int read (void *ptr, size_t len);
821 off_t lseek (off_t offset, int whence);
827 class fhandler_windows: public fhandler_base
830 HWND hWnd_; // the window whose messages are to be retrieved by read() call
831 int method_; // write method (Post or Send)
833 fhandler_windows (const char *name = 0);
834 int is_windows (void) { return 1; }
835 int open (const char *path, int flags, mode_t mode = 0);
836 int write (const void *ptr, size_t len);
837 int read (void *ptr, size_t len);
838 int ioctl (unsigned int cmd, void *);
839 off_t lseek (off_t, int) { return 0; }
840 int close (void) { return 0; }
842 void set_close_on_exec (int val);
843 void fixup_after_fork (HANDLE parent);
844 select_record *select_read (select_record *s);
845 select_record *select_write (select_record *s);
846 select_record *select_except (select_record *s);
847 int ready_for_read (int fd, DWORD howlong, int ignra);
851 /* You can't do this */
854 fhandler_normal normal;
855 fhandler_dev_null dev_null;
860 #define fhandler_union fhandler_console
869 BOOL read_ready, write_ready, except_ready;
870 BOOL read_selected, write_selected, except_selected;
871 int (*startup) (select_record *me, class select_stuff *stuff);
872 int (*poll) (select_record *me, fd_set *readfds, fd_set *writefds,
874 int (*verify) (select_record *me, fd_set *readfds, fd_set *writefds,
876 void (*cleanup) (select_record *me, class select_stuff *stuff);
877 struct select_record *next;
879 select_record (fhandler_base *in_fh = NULL) : fd (0), h (NULL),
880 fh (in_fh), saw_error (0), windows_handle (0),
881 read_ready (0), write_ready (0), except_ready (0),
882 read_selected (0), write_selected (0), except_selected (0),
883 startup (NULL), poll (NULL), verify (NULL), cleanup (NULL),
891 select_stuff (): always_ready (0), windows_used (0), start (0)
893 memset (device_specific, 0, sizeof (device_specific));
895 BOOL always_ready, windows_used;
897 void *device_specific[FH_NDEV];
899 int test_and_set (int i, fd_set *readfds, fd_set *writefds,
901 int poll (fd_set *readfds, fd_set *writefds, fd_set *exceptfds);
902 int wait (fd_set *readfds, fd_set *writefds, fd_set *exceptfds, DWORD ms);
905 int __stdcall set_console_state_for_spawn ();
907 #endif /* _FHANDLER_H_ */