1 /* Copyright (C) 1993, 1995, 1997-2002, 2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Written by Per Bothner <bothner@cygnus.com>.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 As a special exception, if you link the code in this file with
21 files compiled with a GNU compiler to produce an executable,
22 that does not cause the resulting executable to be covered by
23 the GNU Lesser General Public License. This exception does not
24 however invalidate any other reasons why the executable file
25 might be covered by the GNU Lesser General Public License.
26 This exception applies to code released by its copyright holders
27 in files containing the exception. */
31 # define _POSIX_SOURCE
36 #include <sys/param.h>
37 #include <sys/types.h>
46 # include "../wcsmbs/wcsmbsload.h"
47 # include "../iconv/gconv_charset.h"
48 # include "../iconv/gconv_int.h"
49 # include <shlib-compat.h>
55 # define __set_errno(Val) errno = (Val)
60 # define open(Name, Flags, Prot) __open (Name, Flags, Prot)
61 # define close(FD) __close (FD)
62 # define lseek(FD, Offset, Whence) __lseek (FD, Offset, Whence)
63 # define read(FD, Buf, NBytes) __read (FD, Buf, NBytes)
64 # define write(FD, Buf, NBytes) __write (FD, Buf, NBytes)
65 # define _IO_do_write _IO_new_do_write /* For macro uses. */
67 # define _IO_new_do_write _IO_do_write
68 # define _IO_new_file_attach _IO_file_attach
69 # define _IO_new_file_close_it _IO_file_close_it
70 # define _IO_new_file_finish _IO_file_finish
71 # define _IO_new_file_fopen _IO_file_fopen
72 # define _IO_new_file_init _IO_file_init
73 # define _IO_new_file_setbuf _IO_file_setbuf
74 # define _IO_new_file_sync _IO_file_sync
75 # define _IO_new_file_overflow _IO_file_overflow
76 # define _IO_new_file_seekoff _IO_file_seekoff
77 # define _IO_new_file_underflow _IO_file_underflow
78 # define _IO_new_file_write _IO_file_write
79 # define _IO_new_file_xsputn _IO_file_xsputn
84 extern struct __gconv_trans_data __libio_translit attribute_hidden
;
88 /* An fstream can be in at most one of put mode, get mode, or putback mode.
89 Putback mode is a variant of get mode.
91 In a filebuf, there is only one current position, instead of two
92 separate get and put pointers. In get mode, the current position
93 is that of gptr(); in put mode that of pptr().
95 The position in the buffer that corresponds to the position
96 in external file system is normally _IO_read_end, except in putback
97 mode, when it is _IO_save_end.
98 If the field _fb._offset is >= 0, it gives the offset in
99 the file as a whole corresponding to eGptr(). (?)
102 If a filebuf is in put mode, then all of _IO_read_ptr, _IO_read_end,
103 and _IO_read_base are equal to each other. These are usually equal
104 to _IO_buf_base, though not necessarily if we have switched from
105 get mode to put mode. (The reason is to maintain the invariant
106 that _IO_read_end corresponds to the external file position.)
107 _IO_write_base is non-NULL and usually equal to _IO_base_base.
108 We also have _IO_write_end == _IO_buf_end, but only in fully buffered mode.
109 The un-flushed character are those between _IO_write_base and _IO_write_ptr.
112 If a filebuf is in get or putback mode, eback() != egptr().
113 In get mode, the unread characters are between gptr() and egptr().
114 The OS file position corresponds to that of egptr().
117 Putback mode is used to remember "excess" characters that have
118 been sputbackc'd in a separate putback buffer.
119 In putback mode, the get buffer points to the special putback buffer.
120 The unread characters are the characters between gptr() and egptr()
121 in the putback buffer, as well as the area between save_gptr()
122 and save_egptr(), which point into the original reserve buffer.
123 (The pointers save_gptr() and save_egptr() are the values
124 of gptr() and egptr() at the time putback mode was entered.)
125 The OS position corresponds to that of save_egptr().
127 LINE BUFFERED OUTPUT:
128 During line buffered output, _IO_write_base==base() && epptr()==base().
129 However, ptr() may be anywhere between base() and ebuf().
130 This forces a call to filebuf::overflow(int C) on every put.
131 If there is more space in the buffer, and C is not a '\n',
132 then C is inserted, and pptr() incremented.
135 If a filebuf is unbuffered(), the _shortbuf[1] is used as the buffer.
138 #define CLOSED_FILEBUF_FLAGS \
139 (_IO_IS_FILEBUF+_IO_NO_READS+_IO_NO_WRITES+_IO_TIED_PUT_GET)
143 _IO_new_file_init (fp
)
144 struct _IO_FILE_plus
*fp
;
146 /* POSIX.1 allows another file handle to be used to change the position
147 of our file descriptor. Hence we actually don't know the actual
148 position before we do the first fseek (and until a following fflush). */
149 fp
->file
._offset
= _IO_pos_BAD
;
150 fp
->file
._IO_file_flags
|= CLOSED_FILEBUF_FLAGS
;
152 INTUSE(_IO_link_in
) (fp
);
153 fp
->file
._fileno
= -1;
155 INTDEF2(_IO_new_file_init
, _IO_file_init
)
158 _IO_new_file_close_it (fp
)
161 int write_status
, close_status
;
162 if (!_IO_file_is_open (fp
))
165 if ((fp
->_flags
& _IO_NO_WRITES
) == 0
166 && (fp
->_flags
& _IO_CURRENTLY_PUTTING
) != 0)
167 write_status
= _IO_do_flush (fp
);
171 INTUSE(_IO_unsave_markers
) (fp
);
173 close_status
= _IO_SYSCLOSE (fp
);
178 INTUSE(_IO_setb
) (fp
, NULL
, NULL
, 0);
179 _IO_setg (fp
, NULL
, NULL
, NULL
);
180 _IO_setp (fp
, NULL
, NULL
);
182 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
185 if (_IO_have_wbackup (fp
))
186 INTUSE(_IO_free_wbackup_area
) (fp
);
187 INTUSE(_IO_wsetb
) (fp
, NULL
, NULL
, 0);
188 _IO_wsetg (fp
, NULL
, NULL
, NULL
);
189 _IO_wsetp (fp
, NULL
, NULL
);
193 INTUSE(_IO_un_link
) ((struct _IO_FILE_plus
*) fp
);
194 fp
->_flags
= _IO_MAGIC
|CLOSED_FILEBUF_FLAGS
;
196 fp
->_offset
= _IO_pos_BAD
;
198 return close_status
? close_status
: write_status
;
200 INTDEF2(_IO_new_file_close_it
, _IO_file_close_it
)
203 _IO_new_file_finish (fp
, dummy
)
207 if (_IO_file_is_open (fp
))
210 if (!(fp
->_flags
& _IO_DELETE_DONT_CLOSE
))
213 INTUSE(_IO_default_finish
) (fp
, 0);
215 INTDEF2(_IO_new_file_finish
, _IO_file_finish
)
217 #if defined __GNUC__ && __GNUC__ >= 2
221 _IO_file_open (fp
, filename
, posix_mode
, prot
, read_write
, is32not64
)
223 const char *filename
;
232 ? open (filename
, posix_mode
, prot
)
233 : _G_OPEN64 (filename
, posix_mode
, prot
));
235 fdesc
= open (filename
, posix_mode
, prot
);
240 _IO_mask_flags (fp
, read_write
,_IO_NO_READS
+_IO_NO_WRITES
+_IO_IS_APPENDING
);
241 if ((read_write
& _IO_IS_APPENDING
) && (read_write
& _IO_NO_READS
))
242 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_end
, _IOS_INPUT
|_IOS_OUTPUT
)
243 == _IO_pos_BAD
&& errno
!= ESPIPE
)
248 INTUSE(_IO_link_in
) ((struct _IO_FILE_plus
*) fp
);
251 libc_hidden_def (_IO_file_open
)
254 _IO_new_file_fopen (fp
, filename
, mode
, is32not64
)
256 const char *filename
;
260 int oflags
= 0, omode
;
267 const char *last_recognized
;
270 if (_IO_file_is_open (fp
))
276 read_write
= _IO_NO_WRITES
;
280 oflags
= O_CREAT
|O_TRUNC
;
281 read_write
= _IO_NO_READS
;
285 oflags
= O_CREAT
|O_APPEND
;
286 read_write
= _IO_NO_READS
|_IO_IS_APPENDING
;
289 __set_errno (EINVAL
);
293 last_recognized
= mode
;
295 for (i
= 1; i
< 5; ++i
)
303 read_write
&= _IO_IS_APPENDING
;
305 last_recognized
= mode
;
311 last_recognized
= mode
;
316 last_recognized
= mode
;
320 fp
->_flags2
|= _IO_FLAGS2_MMAP
;
329 result
= _IO_file_open (fp
, filename
, omode
|oflags
, oprot
, read_write
,
336 /* Test whether the mode string specifies the conversion. */
337 cs
= strstr (last_recognized
+ 1, ",ccs=");
340 /* Yep. Load the appropriate conversions and set the orientation
342 struct gconv_fcts fcts
;
343 struct _IO_codecvt
*cc
;
344 char *endp
= __strchrnul (cs
+ 5, ',');
345 char ccs
[endp
- (cs
+ 5) + 3];
347 *((char *) __mempcpy (ccs
, cs
+ 5, endp
- (cs
+ 5))) = '\0';
350 if (__wcsmbs_named_conv (&fcts
, ccs
[2] == '\0'
351 ? upstr (ccs
, cs
+ 5) : ccs
) != 0)
353 /* Something went wrong, we cannot load the conversion modules.
354 This means we cannot proceed since the user explicitly asked
356 (void) INTUSE(_IO_file_close_it
) (fp
);
357 __set_errno (EINVAL
);
361 assert (fcts
.towc_nsteps
== 1);
362 assert (fcts
.tomb_nsteps
== 1);
364 fp
->_wide_data
->_IO_read_ptr
= fp
->_wide_data
->_IO_read_end
;
365 fp
->_wide_data
->_IO_write_ptr
= fp
->_wide_data
->_IO_write_base
;
367 /* Clear the state. We start all over again. */
368 memset (&fp
->_wide_data
->_IO_state
, '\0', sizeof (__mbstate_t
));
369 memset (&fp
->_wide_data
->_IO_last_state
, '\0', sizeof (__mbstate_t
));
371 cc
= fp
->_codecvt
= &fp
->_wide_data
->_codecvt
;
373 /* The functions are always the same. */
374 *cc
= __libio_codecvt
;
376 cc
->__cd_in
.__cd
.__nsteps
= fcts
.towc_nsteps
;
377 cc
->__cd_in
.__cd
.__steps
= fcts
.towc
;
379 cc
->__cd_in
.__cd
.__data
[0].__invocation_counter
= 0;
380 cc
->__cd_in
.__cd
.__data
[0].__internal_use
= 1;
381 cc
->__cd_in
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
382 cc
->__cd_in
.__cd
.__data
[0].__statep
= &result
->_wide_data
->_IO_state
;
384 /* XXX For now no transliteration. */
385 cc
->__cd_in
.__cd
.__data
[0].__trans
= NULL
;
387 cc
->__cd_out
.__cd
.__nsteps
= fcts
.tomb_nsteps
;
388 cc
->__cd_out
.__cd
.__steps
= fcts
.tomb
;
390 cc
->__cd_out
.__cd
.__data
[0].__invocation_counter
= 0;
391 cc
->__cd_out
.__cd
.__data
[0].__internal_use
= 1;
392 cc
->__cd_out
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
393 cc
->__cd_out
.__cd
.__data
[0].__statep
=
394 &result
->_wide_data
->_IO_state
;
396 /* And now the transliteration. */
397 cc
->__cd_out
.__cd
.__data
[0].__trans
= &__libio_translit
;
399 /* Set the mode now. */
402 /* We don't need the step data structure anymore. */
403 __gconv_release_cache (fcts
.towc
, fcts
.towc_nsteps
);
404 __gconv_release_cache (fcts
.tomb
, fcts
.tomb_nsteps
);
407 #endif /* GNU libc */
411 INTDEF2(_IO_new_file_fopen
, _IO_file_fopen
)
414 _IO_new_file_attach (fp
, fd
)
418 if (_IO_file_is_open (fp
))
421 fp
->_flags
&= ~(_IO_NO_READS
+_IO_NO_WRITES
);
422 fp
->_flags
|= _IO_DELETE_DONT_CLOSE
;
423 /* Get the current position of the file. */
424 /* We have to do that since that may be junk. */
425 fp
->_offset
= _IO_pos_BAD
;
426 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_cur
, _IOS_INPUT
|_IOS_OUTPUT
)
427 == _IO_pos_BAD
&& errno
!= ESPIPE
)
431 INTDEF2(_IO_new_file_attach
, _IO_file_attach
)
434 _IO_new_file_setbuf (fp
, p
, len
)
439 if (_IO_default_setbuf (fp
, p
, len
) == NULL
)
442 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
444 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
448 INTDEF2(_IO_new_file_setbuf
, _IO_file_setbuf
)
452 _IO_file_setbuf_mmap (fp
, p
, len
)
459 /* Change the function table. */
460 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
461 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
463 /* And perform the normal operation. */
464 result
= _IO_new_file_setbuf (fp
, p
, len
);
466 /* If the call failed, restore to using mmap. */
469 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_file_jumps_mmap
;
470 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
476 static int new_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
478 /* Write TO_DO bytes from DATA to FP.
479 Then mark FP as having empty buffers. */
482 _IO_new_do_write (fp
, data
, to_do
)
488 || (_IO_size_t
) new_do_write (fp
, data
, to_do
) == to_do
) ? 0 : EOF
;
490 INTDEF2(_IO_new_do_write
, _IO_do_write
)
494 new_do_write (fp
, data
, to_do
)
500 if (fp
->_flags
& _IO_IS_APPENDING
)
501 /* On a system without a proper O_APPEND implementation,
502 you would need to sys_seek(0, SEEK_END) here, but is
503 is not needed nor desirable for Unix- or Posix-like systems.
504 Instead, just indicate that offset (before and after) is
506 fp
->_offset
= _IO_pos_BAD
;
507 else if (fp
->_IO_read_end
!= fp
->_IO_write_base
)
510 = _IO_SYSSEEK (fp
, fp
->_IO_write_base
- fp
->_IO_read_end
, 1);
511 if (new_pos
== _IO_pos_BAD
)
513 fp
->_offset
= new_pos
;
515 count
= _IO_SYSWRITE (fp
, data
, to_do
);
516 if (fp
->_cur_column
&& count
)
517 fp
->_cur_column
= INTUSE(_IO_adjust_column
) (fp
->_cur_column
- 1, data
,
519 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
520 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_buf_base
;
521 fp
->_IO_write_end
= (fp
->_mode
<= 0
522 && (fp
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
523 ? fp
->_IO_buf_base
: fp
->_IO_buf_end
);
528 _IO_new_file_underflow (fp
)
533 /* SysV does not make this test; take it out for compatibility */
534 if (fp
->_flags
& _IO_EOF_SEEN
)
538 if (fp
->_flags
& _IO_NO_READS
)
540 fp
->_flags
|= _IO_ERR_SEEN
;
544 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
545 return *(unsigned char *) fp
->_IO_read_ptr
;
547 if (fp
->_IO_buf_base
== NULL
)
549 /* Maybe we already have a push back pointer. */
550 if (fp
->_IO_save_base
!= NULL
)
552 free (fp
->_IO_save_base
);
553 fp
->_flags
&= ~_IO_IN_BACKUP
;
555 INTUSE(_IO_doallocbuf
) (fp
);
558 /* Flush all line buffered files before reading. */
559 /* FIXME This can/should be moved to genops ?? */
560 if (fp
->_flags
& (_IO_LINE_BUF
|_IO_UNBUFFERED
))
563 INTUSE(_IO_flush_all_linebuffered
) ();
565 /* We used to flush all line-buffered stream. This really isn't
566 required by any standard. My recollection is that
567 traditional Unix systems did this for stdout. stderr better
568 not be line buffered. So we do just that here
569 explicitly. --drepper */
570 _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile
,
572 _IO_flockfile (_IO_stdout
);
574 if ((_IO_stdout
->_flags
& (_IO_LINKED
| _IO_NO_WRITES
| _IO_LINE_BUF
))
575 == (_IO_LINKED
| _IO_LINE_BUF
))
576 _IO_OVERFLOW (_IO_stdout
, EOF
);
578 _IO_funlockfile (_IO_stdout
);
579 _IO_cleanup_region_end (0);
583 INTUSE(_IO_switch_to_get_mode
) (fp
);
585 /* This is very tricky. We have to adjust those
586 pointers before we call _IO_SYSREAD () since
587 we may longjump () out while waiting for
588 input. Those pointers may be screwed up. H.J. */
589 fp
->_IO_read_base
= fp
->_IO_read_ptr
= fp
->_IO_buf_base
;
590 fp
->_IO_read_end
= fp
->_IO_buf_base
;
591 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
594 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
595 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
599 fp
->_flags
|= _IO_EOF_SEEN
;
601 fp
->_flags
|= _IO_ERR_SEEN
, count
= 0;
603 fp
->_IO_read_end
+= count
;
606 if (fp
->_offset
!= _IO_pos_BAD
)
607 _IO_pos_adjust (fp
->_offset
, count
);
608 return *(unsigned char *) fp
->_IO_read_ptr
;
610 INTDEF2(_IO_new_file_underflow
, _IO_file_underflow
)
612 /* Guts of underflow callback if we mmap the file. This stats the file and
613 updates the stream state to match. In the normal case we return zero.
614 If the file is no longer eligible for mmap, its jump tables are reset to
615 the vanilla ones and we return nonzero. */
617 mmap_remap_check (_IO_FILE
*fp
)
621 if (_IO_SYSSTAT (fp
, &st
) == 0
622 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
623 /* Limit the file size to 1MB for 32-bit machines. */
624 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024))
626 const size_t pagesize
= __getpagesize ();
627 # define ROUNDED(x) (((x) + pagesize - 1) & ~(pagesize - 1))
628 if (ROUNDED (st
.st_size
) < ROUNDED (fp
->_IO_buf_end
631 /* We can trim off some pages past the end of the file. */
632 (void) __munmap (fp
->_IO_buf_base
+ ROUNDED (st
.st_size
),
633 ROUNDED (fp
->_IO_buf_end
- fp
->_IO_buf_base
)
634 - ROUNDED (st
.st_size
));
635 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
637 else if (ROUNDED (st
.st_size
) > ROUNDED (fp
->_IO_buf_end
640 /* The file added some pages. We need to remap it. */
642 #if defined __linux__ /* XXX */
643 p
= __mremap (fp
->_IO_buf_base
, ROUNDED (fp
->_IO_buf_end
645 ROUNDED (st
.st_size
), MREMAP_MAYMOVE
);
648 (void) __munmap (fp
->_IO_buf_base
,
649 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
653 (void) __munmap (fp
->_IO_buf_base
,
654 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
656 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
659 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
665 fp
->_IO_buf_base
= p
;
666 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
670 /* The number of pages didn't change. */
671 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
675 fp
->_offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
676 _IO_setg (fp
, fp
->_IO_buf_base
,
677 fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
678 ? fp
->_IO_buf_base
+ fp
->_offset
: fp
->_IO_buf_end
,
681 /* If we are already positioned at or past the end of the file, don't
682 change the current offset. If not, seek past what we have mapped,
683 mimicking the position left by a normal underflow reading into its
686 if (fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
)
694 (fp
->_fileno
, fp
->_IO_buf_end
- fp
->_IO_buf_base
, SEEK_SET
)
695 != fp
->_IO_buf_end
- fp
->_IO_buf_base
)
696 fp
->_flags
|= _IO_ERR_SEEN
;
698 fp
->_offset
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
705 /* Life is no longer good for mmap. Punt it. */
706 (void) __munmap (fp
->_IO_buf_base
,
707 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
709 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
710 _IO_setg (fp
, NULL
, NULL
, NULL
);
712 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
714 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
715 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
721 /* Special callback replacing the underflow callbacks if we mmap the file. */
723 _IO_file_underflow_mmap (_IO_FILE
*fp
)
725 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
726 return *(unsigned char *) fp
->_IO_read_ptr
;
728 if (__builtin_expect (mmap_remap_check (fp
), 0))
729 /* We punted to the regular file functions. */
730 return _IO_UNDERFLOW (fp
);
732 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
733 return *(unsigned char *) fp
->_IO_read_ptr
;
735 fp
->_flags
|= _IO_EOF_SEEN
;
740 decide_maybe_mmap (_IO_FILE
*fp
)
742 /* We use the file in read-only mode. This could mean we can
743 mmap the file and use it without any copying. But not all
744 file descriptors are for mmap-able objects and on 32-bit
745 machines we don't want to map files which are too large since
746 this would require too much virtual memory. */
749 if (_IO_SYSSTAT (fp
, &st
) == 0
750 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
751 /* Limit the file size to 1MB for 32-bit machines. */
752 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024)
754 && (fp
->_offset
== _IO_pos_BAD
|| fp
->_offset
<= st
.st_size
))
756 /* Try to map the file. */
760 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
762 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
766 /* OK, we managed to map the file. Set the buffer up and use a
767 special jump table with simplified underflow functions which
768 never tries to read anything from the file. */
776 (fp
->_fileno
, st
.st_size
, SEEK_SET
) != st
.st_size
)
778 (void) __munmap (p
, st
.st_size
);
779 fp
->_offset
= _IO_pos_BAD
;
783 INTUSE(_IO_setb
) (fp
, p
, (char *) p
+ st
.st_size
, 0);
785 if (fp
->_offset
== _IO_pos_BAD
)
788 _IO_setg (fp
, p
, p
+ fp
->_offset
, p
+ st
.st_size
);
789 fp
->_offset
= st
.st_size
;
792 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_file_jumps_mmap
;
794 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_wfile_jumps_mmap
;
795 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
802 /* We couldn't use mmap, so revert to the vanilla file operations. */
805 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
807 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
808 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
812 _IO_file_underflow_maybe_mmap (_IO_FILE
*fp
)
814 /* This is the first read attempt. Choose mmap or vanilla operations
815 and then punt to the chosen underflow routine. */
816 decide_maybe_mmap (fp
);
817 return _IO_UNDERFLOW (fp
);
822 _IO_new_file_overflow (f
, ch
)
826 if (f
->_flags
& _IO_NO_WRITES
) /* SET ERROR */
828 f
->_flags
|= _IO_ERR_SEEN
;
832 /* If currently reading or no buffer allocated. */
833 if ((f
->_flags
& _IO_CURRENTLY_PUTTING
) == 0 || f
->_IO_write_base
== 0)
835 /* Allocate a buffer if needed. */
836 if (f
->_IO_write_base
== 0)
838 INTUSE(_IO_doallocbuf
) (f
);
839 _IO_setg (f
, f
->_IO_buf_base
, f
->_IO_buf_base
, f
->_IO_buf_base
);
841 /* Otherwise must be currently reading.
842 If _IO_read_ptr (and hence also _IO_read_end) is at the buffer end,
843 logically slide the buffer forwards one block (by setting the
844 read pointers to all point at the beginning of the block). This
845 makes room for subsequent output.
846 Otherwise, set the read pointers to _IO_read_end (leaving that
847 alone, so it can continue to correspond to the external position). */
848 if (f
->_IO_read_ptr
== f
->_IO_buf_end
)
849 f
->_IO_read_end
= f
->_IO_read_ptr
= f
->_IO_buf_base
;
850 f
->_IO_write_ptr
= f
->_IO_read_ptr
;
851 f
->_IO_write_base
= f
->_IO_write_ptr
;
852 f
->_IO_write_end
= f
->_IO_buf_end
;
853 f
->_IO_read_base
= f
->_IO_read_ptr
= f
->_IO_read_end
;
855 f
->_flags
|= _IO_CURRENTLY_PUTTING
;
856 if (f
->_mode
<= 0 && f
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
857 f
->_IO_write_end
= f
->_IO_write_ptr
;
860 return INTUSE(_IO_do_write
) (f
, f
->_IO_write_base
,
861 f
->_IO_write_ptr
- f
->_IO_write_base
);
862 if (f
->_IO_write_ptr
== f
->_IO_buf_end
) /* Buffer is really full */
863 if (_IO_do_flush (f
) == EOF
)
865 *f
->_IO_write_ptr
++ = ch
;
866 if ((f
->_flags
& _IO_UNBUFFERED
)
867 || ((f
->_flags
& _IO_LINE_BUF
) && ch
== '\n'))
868 if (INTUSE(_IO_do_write
) (f
, f
->_IO_write_base
,
869 f
->_IO_write_ptr
- f
->_IO_write_base
) == EOF
)
871 return (unsigned char) ch
;
873 INTDEF2(_IO_new_file_overflow
, _IO_file_overflow
)
876 _IO_new_file_sync (fp
)
882 /* char* ptr = cur_ptr(); */
883 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
)
884 if (_IO_do_flush(fp
)) return EOF
;
885 delta
= fp
->_IO_read_ptr
- fp
->_IO_read_end
;
889 if (_IO_in_backup (fp
))
890 delta
-= eGptr () - Gbase ();
892 _IO_off64_t new_pos
= _IO_SYSSEEK (fp
, delta
, 1);
893 if (new_pos
!= (_IO_off64_t
) EOF
)
894 fp
->_IO_read_end
= fp
->_IO_read_ptr
;
896 else if (errno
== ESPIPE
)
897 ; /* Ignore error from unseekable devices. */
903 fp
->_offset
= _IO_pos_BAD
;
904 /* FIXME: Cleanup - can this be shared? */
905 /* setg(base(), ptr, ptr); */
908 INTDEF2(_IO_new_file_sync
, _IO_file_sync
)
911 _IO_file_sync_mmap (_IO_FILE
*fp
)
913 if (fp
->_IO_read_ptr
!= fp
->_IO_read_end
)
916 if (_IO_in_backup (fp
))
917 delta
-= eGptr () - Gbase ();
925 (fp
->_fileno
, fp
->_IO_read_ptr
- fp
->_IO_buf_base
, SEEK_SET
)
926 != fp
->_IO_read_ptr
- fp
->_IO_buf_base
)
928 fp
->_flags
|= _IO_ERR_SEEN
;
932 fp
->_offset
= fp
->_IO_read_ptr
- fp
->_IO_buf_base
;
933 fp
->_IO_read_end
= fp
->_IO_read_ptr
= fp
->_IO_read_base
;
939 _IO_new_file_seekoff (fp
, offset
, dir
, mode
)
946 _IO_off64_t delta
, new_offset
;
948 /* POSIX.1 8.2.3.7 says that after a call the fflush() the file
949 offset of the underlying file must be exact. */
950 int must_be_exact
= (fp
->_IO_read_base
== fp
->_IO_read_end
951 && fp
->_IO_write_base
== fp
->_IO_write_ptr
);
954 dir
= _IO_seek_cur
, offset
= 0; /* Don't move any pointers. */
956 /* Flush unwritten characters.
957 (This may do an unneeded write if we seek within the buffer.
958 But to be able to switch to reading, we would need to set
959 egptr to ptr. That can't be done in the current design,
960 which assumes file_ptr() is eGptr. Anyway, since we probably
961 end up flushing when we close(), it doesn't make much difference.)
962 FIXME: simulate mem-papped files. */
964 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
|| _IO_in_put_mode (fp
))
965 if (INTUSE(_IO_switch_to_get_mode
) (fp
))
968 if (fp
->_IO_buf_base
== NULL
)
970 /* It could be that we already have a pushback buffer. */
971 if (fp
->_IO_read_base
!= NULL
)
973 free (fp
->_IO_read_base
);
974 fp
->_flags
&= ~_IO_IN_BACKUP
;
976 INTUSE(_IO_doallocbuf
) (fp
);
977 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
978 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
984 /* Adjust for read-ahead (bytes is buffer). */
985 offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
986 if (fp
->_offset
== _IO_pos_BAD
)
988 /* Make offset absolute, assuming current pointer is file_ptr(). */
989 offset
+= fp
->_offset
;
992 __set_errno (EINVAL
);
1002 struct _G_stat64 st
;
1003 if (_IO_SYSSTAT (fp
, &st
) == 0 && S_ISREG (st
.st_mode
))
1005 offset
+= st
.st_size
;
1012 /* At this point, dir==_IO_seek_set. */
1014 /* If we are only interested in the current position we've found it now. */
1018 /* If destination is within current buffer, optimize: */
1019 if (fp
->_offset
!= _IO_pos_BAD
&& fp
->_IO_read_base
!= NULL
1020 && !_IO_in_backup (fp
))
1022 /* Offset relative to start of main get area. */
1023 _IO_off64_t rel_offset
= (offset
- fp
->_offset
1024 + (fp
->_IO_read_end
- fp
->_IO_read_base
));
1025 if (rel_offset
>= 0)
1028 if (_IO_in_backup (fp
))
1029 _IO_switch_to_main_get_area (fp
);
1031 if (rel_offset
<= fp
->_IO_read_end
- fp
->_IO_read_base
)
1033 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ rel_offset
,
1035 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1037 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1042 /* If we have streammarkers, seek forward by reading ahead. */
1043 if (_IO_have_markers (fp
))
1045 int to_skip
= rel_offset
1046 - (fp
->_IO_read_ptr
- fp
->_IO_read_base
);
1047 if (ignore (to_skip
) != to_skip
)
1049 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1055 if (rel_offset
< 0 && rel_offset
>= Bbase () - Bptr ())
1057 if (!_IO_in_backup (fp
))
1058 _IO_switch_to_backup_area (fp
);
1059 gbump (fp
->_IO_read_end
+ rel_offset
- fp
->_IO_read_ptr
);
1060 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1067 INTUSE(_IO_unsave_markers
) (fp
);
1070 if (fp
->_flags
& _IO_NO_READS
)
1073 /* Try to seek to a block boundary, to improve kernel page management. */
1074 new_offset
= offset
& ~(fp
->_IO_buf_end
- fp
->_IO_buf_base
- 1);
1075 delta
= offset
- new_offset
;
1076 if (delta
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1078 new_offset
= offset
;
1081 result
= _IO_SYSSEEK (fp
, new_offset
, 0);
1088 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
1090 ? delta
: fp
->_IO_buf_end
- fp
->_IO_buf_base
));
1093 /* We weren't allowed to read, but try to seek the remainder. */
1094 offset
= count
== EOF
? delta
: delta
-count
;
1099 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ delta
,
1100 fp
->_IO_buf_base
+ count
);
1101 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1102 fp
->_offset
= result
+ count
;
1103 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1107 INTUSE(_IO_unsave_markers
) (fp
);
1108 result
= _IO_SYSSEEK (fp
, offset
, dir
);
1111 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1112 fp
->_offset
= result
;
1113 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1114 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1119 /* We need to do it since it is possible that the file offset in
1120 the kernel may be changed behind our back. It may happen when
1121 we fopen a file and then do a fork. One process may access the
1122 the file and the kernel file offset will be changed. */
1123 if (fp
->_offset
>= 0)
1124 _IO_SYSSEEK (fp
, fp
->_offset
, 0);
1128 INTDEF2(_IO_new_file_seekoff
, _IO_file_seekoff
)
1131 _IO_file_seekoff_mmap (fp
, offset
, dir
, mode
)
1139 /* If we are only interested in the current position, calculate it and
1140 return right now. This calculation does the right thing when we are
1141 using a pushback buffer, but in the usual case has the same value as
1142 (fp->_IO_read_ptr - fp->_IO_buf_base). */
1144 return fp
->_offset
- (fp
->_IO_read_end
- fp
->_IO_read_ptr
);
1149 /* Adjust for read-ahead (bytes is buffer). */
1150 offset
+= fp
->_IO_read_ptr
- fp
->_IO_read_base
;
1155 offset
+= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1158 /* At this point, dir==_IO_seek_set. */
1162 /* No negative offsets are valid. */
1163 __set_errno (EINVAL
);
1167 result
= _IO_SYSSEEK (fp
, offset
, 0);
1171 if (offset
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1172 /* One can fseek arbitrarily past the end of the file
1173 and it is meaningless until one attempts to read.
1174 Leave the buffer pointers in EOF state until underflow. */
1175 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_end
, fp
->_IO_buf_end
);
1177 /* Adjust the read pointers to match the file position,
1178 but so the next read attempt will call underflow. */
1179 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ offset
,
1180 fp
->_IO_buf_base
+ offset
);
1182 fp
->_offset
= result
;
1184 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1190 _IO_file_seekoff_maybe_mmap (_IO_FILE
*fp
, _IO_off64_t offset
, int dir
,
1193 /* We only get here when we haven't tried to read anything yet.
1194 So there is nothing more useful for us to do here than just
1195 the underlying lseek call. */
1197 _IO_off64_t result
= _IO_SYSSEEK (fp
, offset
, dir
);
1201 fp
->_offset
= result
;
1206 _IO_file_read (fp
, buf
, size
)
1211 return read (fp
->_fileno
, buf
, size
);
1213 INTDEF(_IO_file_read
)
1216 _IO_file_seek (fp
, offset
, dir
)
1222 return _G_LSEEK64 (fp
->_fileno
, offset
, dir
);
1224 return lseek (fp
->_fileno
, offset
, dir
);
1227 INTDEF(_IO_file_seek
)
1230 _IO_file_stat (fp
, st
)
1235 return _G_FSTAT64 (fp
->_fileno
, (struct _G_stat64
*) st
);
1237 return fstat (fp
->_fileno
, (struct stat
*) st
);
1240 INTDEF(_IO_file_stat
)
1243 _IO_file_close_mmap (fp
)
1246 /* In addition to closing the file descriptor we have to unmap the file. */
1247 (void) __munmap (fp
->_IO_buf_base
, fp
->_IO_buf_end
- fp
->_IO_buf_base
);
1248 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
1249 return close (fp
->_fileno
);
1256 return close (fp
->_fileno
);
1258 INTDEF(_IO_file_close
)
1261 _IO_new_file_write (f
, data
, n
)
1266 _IO_ssize_t to_do
= n
;
1269 _IO_ssize_t count
= write (f
->_fileno
, data
, to_do
);
1272 f
->_flags
|= _IO_ERR_SEEN
;
1276 data
= (void *) ((char *) data
+ count
);
1279 if (f
->_offset
>= 0)
1285 _IO_new_file_xsputn (f
, data
, n
)
1290 register const char *s
= (const char *) data
;
1291 _IO_size_t to_do
= n
;
1297 /* This is an optimized implementation.
1298 If the amount to be written straddles a block boundary
1299 (or the filebuf is unbuffered), use sys_write directly. */
1301 /* First figure out how much space is available in the buffer. */
1302 count
= f
->_IO_write_end
- f
->_IO_write_ptr
; /* Space available. */
1303 if ((f
->_flags
& _IO_LINE_BUF
) && (f
->_flags
& _IO_CURRENTLY_PUTTING
))
1305 count
= f
->_IO_buf_end
- f
->_IO_write_ptr
;
1308 register const char *p
;
1309 for (p
= s
+ n
; p
> s
; )
1320 /* Then fill the buffer. */
1328 f
->_IO_write_ptr
= __mempcpy (f
->_IO_write_ptr
, s
, count
);
1330 memcpy (f
->_IO_write_ptr
, s
, count
);
1331 f
->_IO_write_ptr
+= count
;
1337 register char *p
= f
->_IO_write_ptr
;
1338 register int i
= (int) count
;
1341 f
->_IO_write_ptr
= p
;
1345 if (to_do
+ must_flush
> 0)
1347 _IO_size_t block_size
, do_write
;
1348 /* Next flush the (full) buffer. */
1349 if (_IO_OVERFLOW (f
, EOF
) == EOF
)
1352 /* Try to maintain alignment: write a whole number of blocks.
1353 dont_write is what gets left over. */
1354 block_size
= f
->_IO_buf_end
- f
->_IO_buf_base
;
1355 do_write
= to_do
- (block_size
>= 128 ? to_do
% block_size
: 0);
1359 count
= new_do_write (f
, s
, do_write
);
1361 if (count
< do_write
)
1365 /* Now write out the remainder. Normally, this will fit in the
1366 buffer, but it's somewhat messier for line-buffered files,
1367 so we let _IO_default_xsputn handle the general case. */
1369 to_do
-= INTUSE(_IO_default_xsputn
) (f
, s
+do_write
, to_do
);
1373 INTDEF2(_IO_new_file_xsputn
, _IO_file_xsputn
)
1376 _IO_file_xsgetn (fp
, data
, n
)
1381 register _IO_size_t want
, have
;
1382 register _IO_ssize_t count
;
1383 register char *s
= data
;
1387 if (fp
->_IO_buf_base
== NULL
)
1389 /* Maybe we already have a push back pointer. */
1390 if (fp
->_IO_save_base
!= NULL
)
1392 free (fp
->_IO_save_base
);
1393 fp
->_flags
&= ~_IO_IN_BACKUP
;
1395 INTUSE(_IO_doallocbuf
) (fp
);
1400 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1403 memcpy (s
, fp
->_IO_read_ptr
, want
);
1404 fp
->_IO_read_ptr
+= want
;
1412 s
= __mempcpy (s
, fp
->_IO_read_ptr
, have
);
1414 memcpy (s
, fp
->_IO_read_ptr
, have
);
1418 fp
->_IO_read_ptr
+= have
;
1421 /* Check for backup and repeat */
1422 if (_IO_in_backup (fp
))
1424 _IO_switch_to_main_get_area (fp
);
1428 /* If we now want less than a buffer, underflow and repeat
1429 the copy. Otherwise, _IO_SYSREAD directly to
1431 if (fp
->_IO_buf_base
1432 && want
< (size_t) (fp
->_IO_buf_end
- fp
->_IO_buf_base
))
1434 if (__underflow (fp
) == EOF
)
1440 /* These must be set before the sysread as we might longjmp out
1441 waiting for input. */
1442 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1443 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1445 /* Try to maintain alignment: read a whole number of blocks. */
1447 if (fp
->_IO_buf_base
)
1449 _IO_size_t block_size
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1450 if (block_size
>= 128)
1451 count
-= want
% block_size
;
1454 count
= _IO_SYSREAD (fp
, s
, count
);
1458 fp
->_flags
|= _IO_EOF_SEEN
;
1460 fp
->_flags
|= _IO_ERR_SEEN
;
1467 if (fp
->_offset
!= _IO_pos_BAD
)
1468 _IO_pos_adjust (fp
->_offset
, count
);
1474 INTDEF(_IO_file_xsgetn
)
1476 static _IO_size_t _IO_file_xsgetn_mmap
__P ((_IO_FILE
*, void *, _IO_size_t
));
1478 _IO_file_xsgetn_mmap (fp
, data
, n
)
1483 register _IO_size_t have
;
1484 char *read_ptr
= fp
->_IO_read_ptr
;
1485 register char *s
= (char *) data
;
1487 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1491 if (__builtin_expect (_IO_in_backup (fp
), 0))
1494 s
= __mempcpy (s
, read_ptr
, have
);
1496 memcpy (s
, read_ptr
, have
);
1500 _IO_switch_to_main_get_area (fp
);
1501 read_ptr
= fp
->_IO_read_ptr
;
1502 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1507 /* Check that we are mapping all of the file, in case it grew. */
1508 if (__builtin_expect (mmap_remap_check (fp
), 0))
1509 /* We punted mmap, so complete with the vanilla code. */
1510 return s
- (char *) data
+ _IO_XSGETN (fp
, data
, n
);
1512 read_ptr
= fp
->_IO_read_ptr
;
1513 have
= fp
->_IO_read_end
- read_ptr
;
1518 fp
->_flags
|= _IO_EOF_SEEN
;
1522 have
= MIN (have
, n
);
1524 s
= __mempcpy (s
, read_ptr
, have
);
1526 memcpy (s
, read_ptr
, have
);
1529 fp
->_IO_read_ptr
= read_ptr
+ have
;
1532 return s
- (char *) data
;
1535 static _IO_size_t _IO_file_xsgetn_maybe_mmap
__P ((_IO_FILE
*, void *,
1538 _IO_file_xsgetn_maybe_mmap (fp
, data
, n
)
1543 /* We only get here if this is the first attempt to read something.
1544 Decide which operations to use and then punt to the chosen one. */
1546 decide_maybe_mmap (fp
);
1547 return _IO_XSGETN (fp
, data
, n
);
1551 # undef _IO_do_write
1552 versioned_symbol (libc
, _IO_new_do_write
, _IO_do_write
, GLIBC_2_1
);
1553 versioned_symbol (libc
, _IO_new_file_attach
, _IO_file_attach
, GLIBC_2_1
);
1554 versioned_symbol (libc
, _IO_new_file_close_it
, _IO_file_close_it
, GLIBC_2_1
);
1555 versioned_symbol (libc
, _IO_new_file_finish
, _IO_file_finish
, GLIBC_2_1
);
1556 versioned_symbol (libc
, _IO_new_file_fopen
, _IO_file_fopen
, GLIBC_2_1
);
1557 versioned_symbol (libc
, _IO_new_file_init
, _IO_file_init
, GLIBC_2_1
);
1558 versioned_symbol (libc
, _IO_new_file_setbuf
, _IO_file_setbuf
, GLIBC_2_1
);
1559 versioned_symbol (libc
, _IO_new_file_sync
, _IO_file_sync
, GLIBC_2_1
);
1560 versioned_symbol (libc
, _IO_new_file_overflow
, _IO_file_overflow
, GLIBC_2_1
);
1561 versioned_symbol (libc
, _IO_new_file_seekoff
, _IO_file_seekoff
, GLIBC_2_1
);
1562 versioned_symbol (libc
, _IO_new_file_underflow
, _IO_file_underflow
, GLIBC_2_1
);
1563 versioned_symbol (libc
, _IO_new_file_write
, _IO_file_write
, GLIBC_2_1
);
1564 versioned_symbol (libc
, _IO_new_file_xsputn
, _IO_file_xsputn
, GLIBC_2_1
);
1567 struct _IO_jump_t _IO_file_jumps
=
1570 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1571 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1572 JUMP_INIT(underflow
, INTUSE(_IO_file_underflow
)),
1573 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1574 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1575 JUMP_INIT(xsputn
, INTUSE(_IO_file_xsputn
)),
1576 JUMP_INIT(xsgetn
, INTUSE(_IO_file_xsgetn
)),
1577 JUMP_INIT(seekoff
, _IO_new_file_seekoff
),
1578 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1579 JUMP_INIT(setbuf
, _IO_new_file_setbuf
),
1580 JUMP_INIT(sync
, _IO_new_file_sync
),
1581 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1582 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1583 JUMP_INIT(write
, _IO_new_file_write
),
1584 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1585 JUMP_INIT(close
, INTUSE(_IO_file_close
)),
1586 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1587 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1588 JUMP_INIT(imbue
, _IO_default_imbue
)
1590 INTVARDEF(_IO_file_jumps
)
1592 struct _IO_jump_t _IO_file_jumps_mmap
=
1595 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1596 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1597 JUMP_INIT(underflow
, _IO_file_underflow_mmap
),
1598 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1599 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1600 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1601 JUMP_INIT(xsgetn
, _IO_file_xsgetn_mmap
),
1602 JUMP_INIT(seekoff
, _IO_file_seekoff_mmap
),
1603 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1604 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1605 JUMP_INIT(sync
, _IO_file_sync_mmap
),
1606 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1607 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1608 JUMP_INIT(write
, _IO_new_file_write
),
1609 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1610 JUMP_INIT(close
, _IO_file_close_mmap
),
1611 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1612 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1613 JUMP_INIT(imbue
, _IO_default_imbue
)
1616 struct _IO_jump_t _IO_file_jumps_maybe_mmap
=
1619 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1620 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1621 JUMP_INIT(underflow
, _IO_file_underflow_maybe_mmap
),
1622 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1623 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1624 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1625 JUMP_INIT(xsgetn
, _IO_file_xsgetn_maybe_mmap
),
1626 JUMP_INIT(seekoff
, _IO_file_seekoff_maybe_mmap
),
1627 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1628 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1629 JUMP_INIT(sync
, _IO_new_file_sync
),
1630 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1631 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1632 JUMP_INIT(write
, _IO_new_file_write
),
1633 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1634 JUMP_INIT(close
, _IO_file_close
),
1635 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1636 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1637 JUMP_INIT(imbue
, _IO_default_imbue
)