1 /* Copyright (C) 1993, 1995, 1997-2001, 2002 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)
66 # define _IO_new_do_write _IO_do_write
67 # define _IO_new_file_attach _IO_file_attach
68 # define _IO_new_file_close_it _IO_file_close_it
69 # define _IO_new_file_finish _IO_file_finish
70 # define _IO_new_file_fopen _IO_file_fopen
71 # define _IO_new_file_init _IO_file_init
72 # define _IO_new_file_setbuf _IO_file_setbuf
73 # define _IO_new_file_sync _IO_file_sync
74 # define _IO_new_file_overflow _IO_file_overflow
75 # define _IO_new_file_seekoff _IO_file_seekoff
76 # define _IO_new_file_underflow _IO_file_underflow
77 # define _IO_new_file_write _IO_file_write
78 # define _IO_new_file_xsputn _IO_file_xsputn
83 extern struct __gconv_trans_data __libio_translit attribute_hidden
;
87 /* An fstream can be in at most one of put mode, get mode, or putback mode.
88 Putback mode is a variant of get mode.
90 In a filebuf, there is only one current position, instead of two
91 separate get and put pointers. In get mode, the current position
92 is that of gptr(); in put mode that of pptr().
94 The position in the buffer that corresponds to the position
95 in external file system is normally _IO_read_end, except in putback
96 mode, when it is _IO_save_end.
97 If the field _fb._offset is >= 0, it gives the offset in
98 the file as a whole corresponding to eGptr(). (?)
101 If a filebuf is in put mode, then all of _IO_read_ptr, _IO_read_end,
102 and _IO_read_base are equal to each other. These are usually equal
103 to _IO_buf_base, though not necessarily if we have switched from
104 get mode to put mode. (The reason is to maintain the invariant
105 that _IO_read_end corresponds to the external file position.)
106 _IO_write_base is non-NULL and usually equal to _IO_base_base.
107 We also have _IO_write_end == _IO_buf_end, but only in fully buffered mode.
108 The un-flushed character are those between _IO_write_base and _IO_write_ptr.
111 If a filebuf is in get or putback mode, eback() != egptr().
112 In get mode, the unread characters are between gptr() and egptr().
113 The OS file position corresponds to that of egptr().
116 Putback mode is used to remember "excess" characters that have
117 been sputbackc'd in a separate putback buffer.
118 In putback mode, the get buffer points to the special putback buffer.
119 The unread characters are the characters between gptr() and egptr()
120 in the putback buffer, as well as the area between save_gptr()
121 and save_egptr(), which point into the original reserve buffer.
122 (The pointers save_gptr() and save_egptr() are the values
123 of gptr() and egptr() at the time putback mode was entered.)
124 The OS position corresponds to that of save_egptr().
126 LINE BUFFERED OUTPUT:
127 During line buffered output, _IO_write_base==base() && epptr()==base().
128 However, ptr() may be anywhere between base() and ebuf().
129 This forces a call to filebuf::overflow(int C) on every put.
130 If there is more space in the buffer, and C is not a '\n',
131 then C is inserted, and pptr() incremented.
134 If a filebuf is unbuffered(), the _shortbuf[1] is used as the buffer.
137 #define CLOSED_FILEBUF_FLAGS \
138 (_IO_IS_FILEBUF+_IO_NO_READS+_IO_NO_WRITES+_IO_TIED_PUT_GET)
142 _IO_new_file_init (fp
)
143 struct _IO_FILE_plus
*fp
;
145 /* POSIX.1 allows another file handle to be used to change the position
146 of our file descriptor. Hence we actually don't know the actual
147 position before we do the first fseek (and until a following fflush). */
148 fp
->file
._offset
= _IO_pos_BAD
;
149 fp
->file
._IO_file_flags
|= CLOSED_FILEBUF_FLAGS
;
151 INTUSE(_IO_link_in
) (fp
);
152 fp
->file
._fileno
= -1;
154 INTDEF2(_IO_new_file_init
, _IO_file_init
)
157 _IO_new_file_close_it (fp
)
160 int write_status
, close_status
;
161 if (!_IO_file_is_open (fp
))
164 if ((fp
->_flags
& _IO_NO_WRITES
) == 0
165 && (fp
->_flags
& _IO_CURRENTLY_PUTTING
) != 0)
166 write_status
= _IO_do_flush (fp
);
170 INTUSE(_IO_unsave_markers
) (fp
);
172 close_status
= _IO_SYSCLOSE (fp
);
177 INTUSE(_IO_setb
) (fp
, NULL
, NULL
, 0);
178 _IO_setg (fp
, NULL
, NULL
, NULL
);
179 _IO_setp (fp
, NULL
, NULL
);
181 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
184 if (_IO_have_wbackup (fp
))
185 INTUSE(_IO_free_wbackup_area
) (fp
);
186 INTUSE(_IO_wsetb
) (fp
, NULL
, NULL
, 0);
187 _IO_wsetg (fp
, NULL
, NULL
, NULL
);
188 _IO_wsetp (fp
, NULL
, NULL
);
192 INTUSE(_IO_un_link
) ((struct _IO_FILE_plus
*) fp
);
193 fp
->_flags
= _IO_MAGIC
|CLOSED_FILEBUF_FLAGS
;
195 fp
->_offset
= _IO_pos_BAD
;
197 return close_status
? close_status
: write_status
;
199 INTDEF2(_IO_new_file_close_it
, _IO_file_close_it
)
202 _IO_new_file_finish (fp
, dummy
)
206 if (_IO_file_is_open (fp
))
209 if (!(fp
->_flags
& _IO_DELETE_DONT_CLOSE
))
212 INTUSE(_IO_default_finish
) (fp
, 0);
214 INTDEF2(_IO_new_file_finish
, _IO_file_finish
)
216 #if defined __GNUC__ && __GNUC__ >= 2
220 _IO_file_open (fp
, filename
, posix_mode
, prot
, read_write
, is32not64
)
222 const char *filename
;
231 ? open (filename
, posix_mode
, prot
)
232 : _G_OPEN64 (filename
, posix_mode
, prot
));
234 fdesc
= open (filename
, posix_mode
, prot
);
239 _IO_mask_flags (fp
, read_write
,_IO_NO_READS
+_IO_NO_WRITES
+_IO_IS_APPENDING
);
240 if ((read_write
& _IO_IS_APPENDING
) && (read_write
& _IO_NO_READS
))
241 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_end
, _IOS_INPUT
|_IOS_OUTPUT
)
242 == _IO_pos_BAD
&& errno
!= ESPIPE
)
247 INTUSE(_IO_link_in
) ((struct _IO_FILE_plus
*) fp
);
252 _IO_new_file_fopen (fp
, filename
, mode
, is32not64
)
254 const char *filename
;
258 int oflags
= 0, omode
;
265 const char *last_recognized
;
268 if (_IO_file_is_open (fp
))
274 read_write
= _IO_NO_WRITES
;
278 oflags
= O_CREAT
|O_TRUNC
;
279 read_write
= _IO_NO_READS
;
283 oflags
= O_CREAT
|O_APPEND
;
284 read_write
= _IO_NO_READS
|_IO_IS_APPENDING
;
287 __set_errno (EINVAL
);
291 last_recognized
= mode
;
293 for (i
= 1; i
< 5; ++i
)
301 read_write
&= _IO_IS_APPENDING
;
303 last_recognized
= mode
;
309 last_recognized
= mode
;
314 last_recognized
= mode
;
318 fp
->_flags2
|= _IO_FLAGS2_MMAP
;
327 result
= _IO_file_open (fp
, filename
, omode
|oflags
, oprot
, read_write
,
334 /* Test whether the mode string specifies the conversion. */
335 cs
= strstr (last_recognized
+ 1, ",ccs=");
338 /* Yep. Load the appropriate conversions and set the orientation
340 struct gconv_fcts fcts
;
341 struct _IO_codecvt
*cc
;
342 char *endp
= __strchrnul (cs
+ 5, ',');
343 char ccs
[endp
- (cs
+ 5) + 3];
345 *((char *) __mempcpy (ccs
, cs
+ 5, endp
- (cs
+ 5))) = '\0';
348 if (__wcsmbs_named_conv (&fcts
, ccs
[2] == '\0'
349 ? upstr (ccs
, cs
+ 5) : ccs
) != 0)
351 /* Something went wrong, we cannot load the conversion modules.
352 This means we cannot proceed since the user explicitly asked
354 __set_errno (EINVAL
);
358 assert (fcts
.towc_nsteps
== 1);
359 assert (fcts
.tomb_nsteps
== 1);
361 fp
->_wide_data
->_IO_read_ptr
= fp
->_wide_data
->_IO_read_end
;
362 fp
->_wide_data
->_IO_write_ptr
= fp
->_wide_data
->_IO_write_base
;
364 /* Clear the state. We start all over again. */
365 memset (&fp
->_wide_data
->_IO_state
, '\0', sizeof (__mbstate_t
));
366 memset (&fp
->_wide_data
->_IO_last_state
, '\0', sizeof (__mbstate_t
));
368 cc
= fp
->_codecvt
= &fp
->_wide_data
->_codecvt
;
370 /* The functions are always the same. */
371 *cc
= __libio_codecvt
;
373 cc
->__cd_in
.__cd
.__nsteps
= fcts
.towc_nsteps
;
374 cc
->__cd_in
.__cd
.__steps
= fcts
.towc
;
376 cc
->__cd_in
.__cd
.__data
[0].__invocation_counter
= 0;
377 cc
->__cd_in
.__cd
.__data
[0].__internal_use
= 1;
378 cc
->__cd_in
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
379 cc
->__cd_in
.__cd
.__data
[0].__statep
= &result
->_wide_data
->_IO_state
;
381 /* XXX For now no transliteration. */
382 cc
->__cd_in
.__cd
.__data
[0].__trans
= NULL
;
384 cc
->__cd_out
.__cd
.__nsteps
= fcts
.tomb_nsteps
;
385 cc
->__cd_out
.__cd
.__steps
= fcts
.tomb
;
387 cc
->__cd_out
.__cd
.__data
[0].__invocation_counter
= 0;
388 cc
->__cd_out
.__cd
.__data
[0].__internal_use
= 1;
389 cc
->__cd_out
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
390 cc
->__cd_out
.__cd
.__data
[0].__statep
=
391 &result
->_wide_data
->_IO_state
;
393 /* And now the transliteration. */
394 cc
->__cd_out
.__cd
.__data
[0].__trans
= &__libio_translit
;
396 /* Set the mode now. */
399 /* We don't need the step data structure anymore. */
400 __gconv_release_cache (fcts
.towc
, fcts
.towc_nsteps
);
401 __gconv_release_cache (fcts
.tomb
, fcts
.tomb_nsteps
);
404 #endif /* GNU libc */
408 INTDEF2(_IO_new_file_fopen
, _IO_file_fopen
)
411 _IO_new_file_attach (fp
, fd
)
415 if (_IO_file_is_open (fp
))
418 fp
->_flags
&= ~(_IO_NO_READS
+_IO_NO_WRITES
);
419 fp
->_flags
|= _IO_DELETE_DONT_CLOSE
;
420 /* Get the current position of the file. */
421 /* We have to do that since that may be junk. */
422 fp
->_offset
= _IO_pos_BAD
;
423 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_cur
, _IOS_INPUT
|_IOS_OUTPUT
)
424 == _IO_pos_BAD
&& errno
!= ESPIPE
)
428 INTDEF2(_IO_new_file_attach
, _IO_file_attach
)
431 _IO_new_file_setbuf (fp
, p
, len
)
436 if (_IO_default_setbuf (fp
, p
, len
) == NULL
)
439 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
441 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
445 INTDEF2(_IO_new_file_setbuf
, _IO_file_setbuf
)
449 _IO_file_setbuf_mmap (fp
, p
, len
)
456 /* Change the function table. */
457 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
458 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
460 /* And perform the normal operation. */
461 result
= _IO_new_file_setbuf (fp
, p
, len
);
463 /* If the call failed, restore to using mmap. */
466 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_file_jumps_mmap
;
467 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
473 static int new_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
475 /* Write TO_DO bytes from DATA to FP.
476 Then mark FP as having empty buffers. */
479 _IO_new_do_write (fp
, data
, to_do
)
485 || (_IO_size_t
) new_do_write (fp
, data
, to_do
) == to_do
) ? 0 : EOF
;
487 INTDEF2(_IO_new_do_write
, _IO_do_write
)
491 new_do_write (fp
, data
, to_do
)
497 if (fp
->_flags
& _IO_IS_APPENDING
)
498 /* On a system without a proper O_APPEND implementation,
499 you would need to sys_seek(0, SEEK_END) here, but is
500 is not needed nor desirable for Unix- or Posix-like systems.
501 Instead, just indicate that offset (before and after) is
503 fp
->_offset
= _IO_pos_BAD
;
504 else if (fp
->_IO_read_end
!= fp
->_IO_write_base
)
507 = _IO_SYSSEEK (fp
, fp
->_IO_write_base
- fp
->_IO_read_end
, 1);
508 if (new_pos
== _IO_pos_BAD
)
510 fp
->_offset
= new_pos
;
512 count
= _IO_SYSWRITE (fp
, data
, to_do
);
513 if (fp
->_cur_column
&& count
)
514 fp
->_cur_column
= INTUSE(_IO_adjust_column
) (fp
->_cur_column
- 1, data
,
516 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
517 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_buf_base
;
518 fp
->_IO_write_end
= (fp
->_mode
<= 0
519 && (fp
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
520 ? fp
->_IO_buf_base
: fp
->_IO_buf_end
);
525 _IO_new_file_underflow (fp
)
530 /* SysV does not make this test; take it out for compatibility */
531 if (fp
->_flags
& _IO_EOF_SEEN
)
535 if (fp
->_flags
& _IO_NO_READS
)
537 fp
->_flags
|= _IO_ERR_SEEN
;
541 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
542 return *(unsigned char *) fp
->_IO_read_ptr
;
544 if (fp
->_IO_buf_base
== NULL
)
546 /* Maybe we already have a push back pointer. */
547 if (fp
->_IO_save_base
!= NULL
)
549 free (fp
->_IO_save_base
);
550 fp
->_flags
&= ~_IO_IN_BACKUP
;
552 INTUSE(_IO_doallocbuf
) (fp
);
555 /* Flush all line buffered files before reading. */
556 /* FIXME This can/should be moved to genops ?? */
557 if (fp
->_flags
& (_IO_LINE_BUF
|_IO_UNBUFFERED
))
560 INTUSE(_IO_flush_all_linebuffered
) ();
562 /* We used to flush all line-buffered stream. This really isn't
563 required by any standard. My recollection is that
564 traditional Unix systems did this for stdout. stderr better
565 not be line buffered. So we do just that here
566 explicitly. --drepper */
567 _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile
,
569 _IO_flockfile (_IO_stdout
);
571 if ((_IO_stdout
->_flags
& (_IO_LINKED
| _IO_NO_WRITES
| _IO_LINE_BUF
))
572 == (_IO_LINKED
| _IO_LINE_BUF
))
573 _IO_OVERFLOW (_IO_stdout
, EOF
);
575 _IO_funlockfile (_IO_stdout
);
576 _IO_cleanup_region_end (0);
580 INTUSE(_IO_switch_to_get_mode
) (fp
);
582 /* This is very tricky. We have to adjust those
583 pointers before we call _IO_SYSREAD () since
584 we may longjump () out while waiting for
585 input. Those pointers may be screwed up. H.J. */
586 fp
->_IO_read_base
= fp
->_IO_read_ptr
= fp
->_IO_buf_base
;
587 fp
->_IO_read_end
= fp
->_IO_buf_base
;
588 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
591 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
592 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
596 fp
->_flags
|= _IO_EOF_SEEN
;
598 fp
->_flags
|= _IO_ERR_SEEN
, count
= 0;
600 fp
->_IO_read_end
+= count
;
603 if (fp
->_offset
!= _IO_pos_BAD
)
604 _IO_pos_adjust (fp
->_offset
, count
);
605 return *(unsigned char *) fp
->_IO_read_ptr
;
607 INTDEF2(_IO_new_file_underflow
, _IO_file_underflow
)
609 /* Guts of underflow callback if we mmap the file. This stats the file and
610 updates the stream state to match. In the normal case we return zero.
611 If the file is no longer eligible for mmap, its jump tables are reset to
612 the vanilla ones and we return nonzero. */
614 mmap_remap_check (_IO_FILE
*fp
)
618 if (_IO_SYSSTAT (fp
, &st
) == 0
619 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
620 /* Limit the file size to 1MB for 32-bit machines. */
621 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024))
623 const size_t pagesize
= __getpagesize ();
624 # define ROUNDED(x) (((x) + pagesize - 1) & ~(pagesize - 1))
625 if (ROUNDED (st
.st_size
) < ROUNDED (fp
->_IO_buf_end
628 /* We can trim off some pages past the end of the file. */
629 (void) __munmap (fp
->_IO_buf_base
+ ROUNDED (st
.st_size
),
630 ROUNDED (fp
->_IO_buf_end
- fp
->_IO_buf_base
)
631 - ROUNDED (st
.st_size
));
632 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
634 else if (ROUNDED (st
.st_size
) > ROUNDED (fp
->_IO_buf_end
637 /* The file added some pages. We need to remap it. */
639 #if defined __linux__ /* XXX */
640 p
= __mremap (fp
->_IO_buf_base
, ROUNDED (fp
->_IO_buf_end
642 ROUNDED (st
.st_size
), MREMAP_MAYMOVE
);
645 (void) __munmap (fp
->_IO_buf_base
,
646 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
650 (void) __munmap (fp
->_IO_buf_base
,
651 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
653 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
656 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
662 fp
->_IO_buf_base
= p
;
663 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
667 /* The number of pages didn't change. */
668 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
672 fp
->_offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
673 _IO_setg (fp
, fp
->_IO_buf_base
,
674 fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
675 ? fp
->_IO_buf_base
+ fp
->_offset
: fp
->_IO_buf_end
,
678 /* If we are already positioned at or past the end of the file, don't
679 change the current offset. If not, seek past what we have mapped,
680 mimicking the position left by a normal underflow reading into its
683 if (fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
)
691 (fp
->_fileno
, fp
->_IO_buf_end
- fp
->_IO_buf_base
, SEEK_SET
)
692 != fp
->_IO_buf_end
- fp
->_IO_buf_base
)
693 fp
->_flags
|= _IO_ERR_SEEN
;
695 fp
->_offset
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
702 /* Life is no longer good for mmap. Punt it. */
703 (void) __munmap (fp
->_IO_buf_base
,
704 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
706 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
707 _IO_setg (fp
, NULL
, NULL
, NULL
);
709 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
711 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
712 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
718 /* Special callback replacing the underflow callbacks if we mmap the file. */
720 _IO_file_underflow_mmap (_IO_FILE
*fp
)
722 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
723 return *(unsigned char *) fp
->_IO_read_ptr
;
725 if (__builtin_expect (mmap_remap_check (fp
), 0))
726 /* We punted to the regular file functions. */
727 return _IO_UNDERFLOW (fp
);
729 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
730 return *(unsigned char *) fp
->_IO_read_ptr
;
732 fp
->_flags
|= _IO_EOF_SEEN
;
737 decide_maybe_mmap (_IO_FILE
*fp
)
739 /* We use the file in read-only mode. This could mean we can
740 mmap the file and use it without any copying. But not all
741 file descriptors are for mmap-able objects and on 32-bit
742 machines we don't want to map files which are too large since
743 this would require too much virtual memory. */
746 if (_IO_SYSSTAT (fp
, &st
) == 0
747 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
748 /* Limit the file size to 1MB for 32-bit machines. */
749 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024)
751 && (fp
->_offset
== _IO_pos_BAD
|| fp
->_offset
<= st
.st_size
))
753 /* Try to map the file. */
757 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
759 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
763 /* OK, we managed to map the file. Set the buffer up and use a
764 special jump table with simplified underflow functions which
765 never tries to read anything from the file. */
773 (fp
->_fileno
, st
.st_size
, SEEK_SET
) != st
.st_size
)
775 (void) __munmap (p
, st
.st_size
);
776 fp
->_offset
= _IO_pos_BAD
;
780 INTUSE(_IO_setb
) (fp
, p
, (char *) p
+ st
.st_size
, 0);
782 if (fp
->_offset
== _IO_pos_BAD
)
785 _IO_setg (fp
, p
, p
+ fp
->_offset
, p
+ st
.st_size
);
786 fp
->_offset
= st
.st_size
;
789 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_file_jumps_mmap
;
791 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_wfile_jumps_mmap
;
792 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
799 /* We couldn't use mmap, so revert to the vanilla file operations. */
802 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
804 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
805 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
809 _IO_file_underflow_maybe_mmap (_IO_FILE
*fp
)
811 /* This is the first read attempt. Choose mmap or vanilla operations
812 and then punt to the chosen underflow routine. */
813 decide_maybe_mmap (fp
);
814 return _IO_UNDERFLOW (fp
);
819 _IO_new_file_overflow (f
, ch
)
823 if (f
->_flags
& _IO_NO_WRITES
) /* SET ERROR */
825 f
->_flags
|= _IO_ERR_SEEN
;
829 /* If currently reading or no buffer allocated. */
830 if ((f
->_flags
& _IO_CURRENTLY_PUTTING
) == 0 || f
->_IO_write_base
== 0)
832 /* Allocate a buffer if needed. */
833 if (f
->_IO_write_base
== 0)
835 INTUSE(_IO_doallocbuf
) (f
);
836 _IO_setg (f
, f
->_IO_buf_base
, f
->_IO_buf_base
, f
->_IO_buf_base
);
838 /* Otherwise must be currently reading.
839 If _IO_read_ptr (and hence also _IO_read_end) is at the buffer end,
840 logically slide the buffer forwards one block (by setting the
841 read pointers to all point at the beginning of the block). This
842 makes room for subsequent output.
843 Otherwise, set the read pointers to _IO_read_end (leaving that
844 alone, so it can continue to correspond to the external position). */
845 if (f
->_IO_read_ptr
== f
->_IO_buf_end
)
846 f
->_IO_read_end
= f
->_IO_read_ptr
= f
->_IO_buf_base
;
847 f
->_IO_write_ptr
= f
->_IO_read_ptr
;
848 f
->_IO_write_base
= f
->_IO_write_ptr
;
849 f
->_IO_write_end
= f
->_IO_buf_end
;
850 f
->_IO_read_base
= f
->_IO_read_ptr
= f
->_IO_read_end
;
852 f
->_flags
|= _IO_CURRENTLY_PUTTING
;
853 if (f
->_mode
<= 0 && f
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
854 f
->_IO_write_end
= f
->_IO_write_ptr
;
857 return _IO_new_do_write(f
, f
->_IO_write_base
,
858 f
->_IO_write_ptr
- f
->_IO_write_base
);
859 if (f
->_IO_write_ptr
== f
->_IO_buf_end
) /* Buffer is really full */
860 if (_IO_do_flush (f
) == EOF
)
862 *f
->_IO_write_ptr
++ = ch
;
863 if ((f
->_flags
& _IO_UNBUFFERED
)
864 || ((f
->_flags
& _IO_LINE_BUF
) && ch
== '\n'))
865 if (_IO_new_do_write(f
, f
->_IO_write_base
,
866 f
->_IO_write_ptr
- f
->_IO_write_base
) == EOF
)
868 return (unsigned char) ch
;
870 INTDEF2(_IO_new_file_overflow
, _IO_file_overflow
)
873 _IO_new_file_sync (fp
)
879 /* char* ptr = cur_ptr(); */
880 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
)
881 if (_IO_do_flush(fp
)) return EOF
;
882 delta
= fp
->_IO_read_ptr
- fp
->_IO_read_end
;
886 if (_IO_in_backup (fp
))
887 delta
-= eGptr () - Gbase ();
889 _IO_off64_t new_pos
= _IO_SYSSEEK (fp
, delta
, 1);
890 if (new_pos
!= (_IO_off64_t
) EOF
)
891 fp
->_IO_read_end
= fp
->_IO_read_ptr
;
893 else if (errno
== ESPIPE
)
894 ; /* Ignore error from unseekable devices. */
900 fp
->_offset
= _IO_pos_BAD
;
901 /* FIXME: Cleanup - can this be shared? */
902 /* setg(base(), ptr, ptr); */
905 INTDEF2(_IO_new_file_sync
, _IO_file_sync
)
908 _IO_file_sync_mmap (_IO_FILE
*fp
)
910 if (fp
->_IO_read_ptr
!= fp
->_IO_read_end
)
913 if (_IO_in_backup (fp
))
914 delta
-= eGptr () - Gbase ();
922 (fp
->_fileno
, fp
->_IO_read_ptr
- fp
->_IO_buf_base
, SEEK_SET
)
923 != fp
->_IO_read_ptr
- fp
->_IO_buf_base
)
925 fp
->_flags
|= _IO_ERR_SEEN
;
929 fp
->_offset
= fp
->_IO_read_ptr
- fp
->_IO_buf_base
;
930 fp
->_IO_read_end
= fp
->_IO_read_ptr
= fp
->_IO_read_base
;
936 _IO_new_file_seekoff (fp
, offset
, dir
, mode
)
943 _IO_off64_t delta
, new_offset
;
945 /* POSIX.1 8.2.3.7 says that after a call the fflush() the file
946 offset of the underlying file must be exact. */
947 int must_be_exact
= (fp
->_IO_read_base
== fp
->_IO_read_end
948 && fp
->_IO_write_base
== fp
->_IO_write_ptr
);
951 dir
= _IO_seek_cur
, offset
= 0; /* Don't move any pointers. */
953 /* Flush unwritten characters.
954 (This may do an unneeded write if we seek within the buffer.
955 But to be able to switch to reading, we would need to set
956 egptr to ptr. That can't be done in the current design,
957 which assumes file_ptr() is eGptr. Anyway, since we probably
958 end up flushing when we close(), it doesn't make much difference.)
959 FIXME: simulate mem-papped files. */
961 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
|| _IO_in_put_mode (fp
))
962 if (INTUSE(_IO_switch_to_get_mode
) (fp
))
965 if (fp
->_IO_buf_base
== NULL
)
967 /* It could be that we already have a pushback buffer. */
968 if (fp
->_IO_read_base
!= NULL
)
970 free (fp
->_IO_read_base
);
971 fp
->_flags
&= ~_IO_IN_BACKUP
;
973 INTUSE(_IO_doallocbuf
) (fp
);
974 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
975 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
981 /* Adjust for read-ahead (bytes is buffer). */
982 offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
983 if (fp
->_offset
== _IO_pos_BAD
)
985 /* Make offset absolute, assuming current pointer is file_ptr(). */
986 offset
+= fp
->_offset
;
989 __set_errno (EINVAL
);
1000 if (_IO_SYSSTAT (fp
, &st
) == 0 && S_ISREG (st
.st_mode
))
1002 offset
+= st
.st_size
;
1009 /* At this point, dir==_IO_seek_set. */
1011 /* If we are only interested in the current position we've found it now. */
1015 /* If destination is within current buffer, optimize: */
1016 if (fp
->_offset
!= _IO_pos_BAD
&& fp
->_IO_read_base
!= NULL
1017 && !_IO_in_backup (fp
))
1019 /* Offset relative to start of main get area. */
1020 _IO_off64_t rel_offset
= (offset
- fp
->_offset
1021 + (fp
->_IO_read_end
- fp
->_IO_read_base
));
1022 if (rel_offset
>= 0)
1025 if (_IO_in_backup (fp
))
1026 _IO_switch_to_main_get_area (fp
);
1028 if (rel_offset
<= fp
->_IO_read_end
- fp
->_IO_read_base
)
1030 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ rel_offset
,
1032 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1034 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1039 /* If we have streammarkers, seek forward by reading ahead. */
1040 if (_IO_have_markers (fp
))
1042 int to_skip
= rel_offset
1043 - (fp
->_IO_read_ptr
- fp
->_IO_read_base
);
1044 if (ignore (to_skip
) != to_skip
)
1046 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1052 if (rel_offset
< 0 && rel_offset
>= Bbase () - Bptr ())
1054 if (!_IO_in_backup (fp
))
1055 _IO_switch_to_backup_area (fp
);
1056 gbump (fp
->_IO_read_end
+ rel_offset
- fp
->_IO_read_ptr
);
1057 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1064 INTUSE(_IO_unsave_markers
) (fp
);
1067 if (fp
->_flags
& _IO_NO_READS
)
1070 /* Try to seek to a block boundary, to improve kernel page management. */
1071 new_offset
= offset
& ~(fp
->_IO_buf_end
- fp
->_IO_buf_base
- 1);
1072 delta
= offset
- new_offset
;
1073 if (delta
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1075 new_offset
= offset
;
1078 result
= _IO_SYSSEEK (fp
, new_offset
, 0);
1085 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
1087 ? delta
: fp
->_IO_buf_end
- fp
->_IO_buf_base
));
1090 /* We weren't allowed to read, but try to seek the remainder. */
1091 offset
= count
== EOF
? delta
: delta
-count
;
1096 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ delta
,
1097 fp
->_IO_buf_base
+ count
);
1098 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1099 fp
->_offset
= result
+ count
;
1100 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1104 INTUSE(_IO_unsave_markers
) (fp
);
1105 result
= _IO_SYSSEEK (fp
, offset
, dir
);
1108 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1109 fp
->_offset
= result
;
1110 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1111 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1116 /* We need to do it since it is possible that the file offset in
1117 the kernel may be changed behind our back. It may happen when
1118 we fopen a file and then do a fork. One process may access the
1119 the file and the kernel file offset will be changed. */
1120 if (fp
->_offset
>= 0)
1121 _IO_SYSSEEK (fp
, fp
->_offset
, 0);
1125 INTDEF2(_IO_new_file_seekoff
, _IO_file_seekoff
)
1128 _IO_file_seekoff_mmap (fp
, offset
, dir
, mode
)
1136 /* If we are only interested in the current position, calculate it and
1137 return right now. This calculation does the right thing when we are
1138 using a pushback buffer, but in the usual case has the same value as
1139 (fp->_IO_read_ptr - fp->_IO_buf_base). */
1141 return fp
->_offset
- (fp
->_IO_read_end
- fp
->_IO_read_ptr
);
1146 /* Adjust for read-ahead (bytes is buffer). */
1147 offset
+= fp
->_IO_read_ptr
- fp
->_IO_read_base
;
1152 offset
+= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1155 /* At this point, dir==_IO_seek_set. */
1159 /* No negative offsets are valid. */
1160 __set_errno (EINVAL
);
1164 result
= _IO_SYSSEEK (fp
, offset
, 0);
1168 if (offset
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1169 /* One can fseek arbitrarily past the end of the file
1170 and it is meaningless until one attempts to read.
1171 Leave the buffer pointers in EOF state until underflow. */
1172 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_end
, fp
->_IO_buf_end
);
1174 /* Adjust the read pointers to match the file position,
1175 but so the next read attempt will call underflow. */
1176 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ offset
,
1177 fp
->_IO_buf_base
+ offset
);
1179 fp
->_offset
= result
;
1181 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1187 _IO_file_seekoff_maybe_mmap (fp
, offset
, dir
, mode
)
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 versioned_symbol (libc
, _IO_new_do_write
, _IO_do_write
, GLIBC_2_1
);
1552 versioned_symbol (libc
, _IO_new_file_attach
, _IO_file_attach
, GLIBC_2_1
);
1553 versioned_symbol (libc
, _IO_new_file_close_it
, _IO_file_close_it
, GLIBC_2_1
);
1554 versioned_symbol (libc
, _IO_new_file_finish
, _IO_file_finish
, GLIBC_2_1
);
1555 versioned_symbol (libc
, _IO_new_file_fopen
, _IO_file_fopen
, GLIBC_2_1
);
1556 versioned_symbol (libc
, _IO_new_file_init
, _IO_file_init
, GLIBC_2_1
);
1557 versioned_symbol (libc
, _IO_new_file_setbuf
, _IO_file_setbuf
, GLIBC_2_1
);
1558 versioned_symbol (libc
, _IO_new_file_sync
, _IO_file_sync
, GLIBC_2_1
);
1559 versioned_symbol (libc
, _IO_new_file_overflow
, _IO_file_overflow
, GLIBC_2_1
);
1560 versioned_symbol (libc
, _IO_new_file_seekoff
, _IO_file_seekoff
, GLIBC_2_1
);
1561 versioned_symbol (libc
, _IO_new_file_underflow
, _IO_file_underflow
, GLIBC_2_1
);
1562 versioned_symbol (libc
, _IO_new_file_write
, _IO_file_write
, GLIBC_2_1
);
1563 versioned_symbol (libc
, _IO_new_file_xsputn
, _IO_file_xsputn
, GLIBC_2_1
);
1566 struct _IO_jump_t _IO_file_jumps
=
1569 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1570 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1571 JUMP_INIT(underflow
, INTUSE(_IO_file_underflow
)),
1572 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1573 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1574 JUMP_INIT(xsputn
, INTUSE(_IO_file_xsputn
)),
1575 JUMP_INIT(xsgetn
, INTUSE(_IO_file_xsgetn
)),
1576 JUMP_INIT(seekoff
, _IO_new_file_seekoff
),
1577 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1578 JUMP_INIT(setbuf
, _IO_new_file_setbuf
),
1579 JUMP_INIT(sync
, _IO_new_file_sync
),
1580 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1581 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1582 JUMP_INIT(write
, _IO_new_file_write
),
1583 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1584 JUMP_INIT(close
, INTUSE(_IO_file_close
)),
1585 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1586 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1587 JUMP_INIT(imbue
, _IO_default_imbue
)
1589 INTVARDEF(_IO_file_jumps
)
1591 struct _IO_jump_t _IO_file_jumps_mmap
=
1594 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1595 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1596 JUMP_INIT(underflow
, _IO_file_underflow_mmap
),
1597 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1598 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1599 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1600 JUMP_INIT(xsgetn
, _IO_file_xsgetn_mmap
),
1601 JUMP_INIT(seekoff
, _IO_file_seekoff_mmap
),
1602 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1603 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1604 JUMP_INIT(sync
, _IO_file_sync_mmap
),
1605 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1606 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1607 JUMP_INIT(write
, _IO_new_file_write
),
1608 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1609 JUMP_INIT(close
, _IO_file_close_mmap
),
1610 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1611 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1612 JUMP_INIT(imbue
, _IO_default_imbue
)
1615 struct _IO_jump_t _IO_file_jumps_maybe_mmap
=
1618 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1619 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1620 JUMP_INIT(underflow
, _IO_file_underflow_maybe_mmap
),
1621 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1622 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1623 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1624 JUMP_INIT(xsgetn
, _IO_file_xsgetn_maybe_mmap
),
1625 JUMP_INIT(seekoff
, _IO_file_seekoff_maybe_mmap
),
1626 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1627 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1628 JUMP_INIT(sync
, _IO_new_file_sync
),
1629 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1630 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1631 JUMP_INIT(write
, _IO_new_file_write
),
1632 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1633 JUMP_INIT(close
, _IO_file_close
),
1634 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1635 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1636 JUMP_INIT(imbue
, _IO_default_imbue
)