1 /* Copyright (C) 1993, 1995, 1997-2005, 2006, 2007
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Per Bothner <bothner@cygnus.com>.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 As a special exception, if you link the code in this file with
22 files compiled with a GNU compiler to produce an executable,
23 that does not cause the resulting executable to be covered by
24 the GNU Lesser General Public License. This exception does not
25 however invalidate any other reasons why the executable file
26 might be covered by the GNU Lesser General Public License.
27 This exception applies to code released by its copyright holders
28 in files containing the exception. */
32 # define _POSIX_SOURCE
37 #include <sys/param.h>
38 #include <sys/types.h>
47 # include "../wcsmbs/wcsmbsload.h"
48 # include "../iconv/gconv_charset.h"
49 # include "../iconv/gconv_int.h"
50 # include <shlib-compat.h>
51 # include <not-cancel.h>
57 # define __set_errno(Val) errno = (Val)
62 # define open(Name, Flags, Prot) __open (Name, Flags, Prot)
63 # define lseek(FD, Offset, Whence) __lseek (FD, Offset, Whence)
64 # define read(FD, Buf, NBytes) __read (FD, Buf, NBytes)
65 # define write(FD, Buf, NBytes) __write (FD, Buf, NBytes)
66 # define _IO_do_write _IO_new_do_write /* For macro uses. */
67 # define _IO_file_close_it _IO_new_file_close_it
69 # define _IO_new_do_write _IO_do_write
70 # define _IO_new_file_attach _IO_file_attach
71 # define _IO_new_file_close_it _IO_file_close_it
72 # define _IO_new_file_finish _IO_file_finish
73 # define _IO_new_file_fopen _IO_file_fopen
74 # define _IO_new_file_init _IO_file_init
75 # define _IO_new_file_setbuf _IO_file_setbuf
76 # define _IO_new_file_sync _IO_file_sync
77 # define _IO_new_file_overflow _IO_file_overflow
78 # define _IO_new_file_seekoff _IO_file_seekoff
79 # define _IO_new_file_underflow _IO_file_underflow
80 # define _IO_new_file_write _IO_file_write
81 # define _IO_new_file_xsputn _IO_file_xsputn
86 extern struct __gconv_trans_data __libio_translit attribute_hidden
;
90 /* An fstream can be in at most one of put mode, get mode, or putback mode.
91 Putback mode is a variant of get mode.
93 In a filebuf, there is only one current position, instead of two
94 separate get and put pointers. In get mode, the current position
95 is that of gptr(); in put mode that of pptr().
97 The position in the buffer that corresponds to the position
98 in external file system is normally _IO_read_end, except in putback
99 mode, when it is _IO_save_end.
100 If the field _fb._offset is >= 0, it gives the offset in
101 the file as a whole corresponding to eGptr(). (?)
104 If a filebuf is in put mode, then all of _IO_read_ptr, _IO_read_end,
105 and _IO_read_base are equal to each other. These are usually equal
106 to _IO_buf_base, though not necessarily if we have switched from
107 get mode to put mode. (The reason is to maintain the invariant
108 that _IO_read_end corresponds to the external file position.)
109 _IO_write_base is non-NULL and usually equal to _IO_base_base.
110 We also have _IO_write_end == _IO_buf_end, but only in fully buffered mode.
111 The un-flushed character are those between _IO_write_base and _IO_write_ptr.
114 If a filebuf is in get or putback mode, eback() != egptr().
115 In get mode, the unread characters are between gptr() and egptr().
116 The OS file position corresponds to that of egptr().
119 Putback mode is used to remember "excess" characters that have
120 been sputbackc'd in a separate putback buffer.
121 In putback mode, the get buffer points to the special putback buffer.
122 The unread characters are the characters between gptr() and egptr()
123 in the putback buffer, as well as the area between save_gptr()
124 and save_egptr(), which point into the original reserve buffer.
125 (The pointers save_gptr() and save_egptr() are the values
126 of gptr() and egptr() at the time putback mode was entered.)
127 The OS position corresponds to that of save_egptr().
129 LINE BUFFERED OUTPUT:
130 During line buffered output, _IO_write_base==base() && epptr()==base().
131 However, ptr() may be anywhere between base() and ebuf().
132 This forces a call to filebuf::overflow(int C) on every put.
133 If there is more space in the buffer, and C is not a '\n',
134 then C is inserted, and pptr() incremented.
137 If a filebuf is unbuffered(), the _shortbuf[1] is used as the buffer.
140 #define CLOSED_FILEBUF_FLAGS \
141 (_IO_IS_FILEBUF+_IO_NO_READS+_IO_NO_WRITES+_IO_TIED_PUT_GET)
145 _IO_new_file_init (fp
)
146 struct _IO_FILE_plus
*fp
;
148 /* POSIX.1 allows another file handle to be used to change the position
149 of our file descriptor. Hence we actually don't know the actual
150 position before we do the first fseek (and until a following fflush). */
151 fp
->file
._offset
= _IO_pos_BAD
;
152 fp
->file
._IO_file_flags
|= CLOSED_FILEBUF_FLAGS
;
154 INTUSE(_IO_link_in
) (fp
);
155 fp
->file
._fileno
= -1;
157 INTDEF2(_IO_new_file_init
, _IO_file_init
)
160 _IO_new_file_close_it (fp
)
163 int write_status
, close_status
;
164 if (!_IO_file_is_open (fp
))
167 if ((fp
->_flags
& _IO_NO_WRITES
) == 0
168 && (fp
->_flags
& _IO_CURRENTLY_PUTTING
) != 0)
169 write_status
= _IO_do_flush (fp
);
173 INTUSE(_IO_unsave_markers
) (fp
);
175 close_status
= _IO_SYSCLOSE (fp
);
178 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
181 if (_IO_have_wbackup (fp
))
182 INTUSE(_IO_free_wbackup_area
) (fp
);
183 INTUSE(_IO_wsetb
) (fp
, NULL
, NULL
, 0);
184 _IO_wsetg (fp
, NULL
, NULL
, NULL
);
185 _IO_wsetp (fp
, NULL
, NULL
);
188 INTUSE(_IO_setb
) (fp
, NULL
, NULL
, 0);
189 _IO_setg (fp
, NULL
, NULL
, NULL
);
190 _IO_setp (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
)
217 _IO_file_open (fp
, filename
, posix_mode
, prot
, read_write
, is32not64
)
219 const char *filename
;
227 if (__builtin_expect (fp
->_flags2
& _IO_FLAGS2_NOTCANCEL
, 0))
228 fdesc
= open_not_cancel (filename
,
229 posix_mode
| (is32not64
? 0 : O_LARGEFILE
), prot
);
231 fdesc
= open (filename
, posix_mode
| (is32not64
? 0 : O_LARGEFILE
), prot
);
233 fdesc
= open (filename
, posix_mode
, prot
);
238 _IO_mask_flags (fp
, read_write
,_IO_NO_READS
+_IO_NO_WRITES
+_IO_IS_APPENDING
);
239 if ((read_write
& _IO_IS_APPENDING
) && (read_write
& _IO_NO_READS
))
240 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_end
, _IOS_INPUT
|_IOS_OUTPUT
)
241 == _IO_pos_BAD
&& errno
!= ESPIPE
)
243 close_not_cancel (fdesc
);
246 INTUSE(_IO_link_in
) ((struct _IO_FILE_plus
*) fp
);
249 libc_hidden_def (_IO_file_open
)
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
< 6; ++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
;
321 fp
->_flags2
|= _IO_FLAGS2_NOTCANCEL
;
330 result
= _IO_file_open (fp
, filename
, omode
|oflags
, oprot
, read_write
,
337 /* Test whether the mode string specifies the conversion. */
338 cs
= strstr (last_recognized
+ 1, ",ccs=");
341 /* Yep. Load the appropriate conversions and set the orientation
343 struct gconv_fcts fcts
;
344 struct _IO_codecvt
*cc
;
345 char *endp
= __strchrnul (cs
+ 5, ',');
346 char ccs
[endp
- (cs
+ 5) + 3];
348 *((char *) __mempcpy (ccs
, cs
+ 5, endp
- (cs
+ 5))) = '\0';
351 if (__wcsmbs_named_conv (&fcts
, ccs
[2] == '\0'
352 ? upstr (ccs
, cs
+ 5) : ccs
) != 0)
354 /* Something went wrong, we cannot load the conversion modules.
355 This means we cannot proceed since the user explicitly asked
357 (void) INTUSE(_IO_file_close_it
) (fp
);
358 __set_errno (EINVAL
);
362 assert (fcts
.towc_nsteps
== 1);
363 assert (fcts
.tomb_nsteps
== 1);
365 fp
->_wide_data
->_IO_read_ptr
= fp
->_wide_data
->_IO_read_end
;
366 fp
->_wide_data
->_IO_write_ptr
= fp
->_wide_data
->_IO_write_base
;
368 /* Clear the state. We start all over again. */
369 memset (&fp
->_wide_data
->_IO_state
, '\0', sizeof (__mbstate_t
));
370 memset (&fp
->_wide_data
->_IO_last_state
, '\0', sizeof (__mbstate_t
));
372 cc
= fp
->_codecvt
= &fp
->_wide_data
->_codecvt
;
374 /* The functions are always the same. */
375 *cc
= __libio_codecvt
;
377 cc
->__cd_in
.__cd
.__nsteps
= fcts
.towc_nsteps
;
378 cc
->__cd_in
.__cd
.__steps
= fcts
.towc
;
380 cc
->__cd_in
.__cd
.__data
[0].__invocation_counter
= 0;
381 cc
->__cd_in
.__cd
.__data
[0].__internal_use
= 1;
382 cc
->__cd_in
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
383 cc
->__cd_in
.__cd
.__data
[0].__statep
= &result
->_wide_data
->_IO_state
;
385 /* XXX For now no transliteration. */
386 cc
->__cd_in
.__cd
.__data
[0].__trans
= NULL
;
388 cc
->__cd_out
.__cd
.__nsteps
= fcts
.tomb_nsteps
;
389 cc
->__cd_out
.__cd
.__steps
= fcts
.tomb
;
391 cc
->__cd_out
.__cd
.__data
[0].__invocation_counter
= 0;
392 cc
->__cd_out
.__cd
.__data
[0].__internal_use
= 1;
393 cc
->__cd_out
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
394 cc
->__cd_out
.__cd
.__data
[0].__statep
=
395 &result
->_wide_data
->_IO_state
;
397 /* And now the transliteration. */
398 cc
->__cd_out
.__cd
.__data
[0].__trans
= &__libio_translit
;
400 /* From now on use the wide character callback functions. */
401 ((struct _IO_FILE_plus
*) fp
)->vtable
= fp
->_wide_data
->_wide_vtable
;
403 /* Set the mode now. */
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
) = &_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 _IO_size_t
new_do_write (_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_acquire_lock (_IO_stdout
);
572 if ((_IO_stdout
->_flags
& (_IO_LINKED
| _IO_NO_WRITES
| _IO_LINE_BUF
))
573 == (_IO_LINKED
| _IO_LINE_BUF
))
574 _IO_OVERFLOW (_IO_stdout
, EOF
);
576 _IO_release_lock (_IO_stdout
);
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 #ifdef _G_HAVE_MREMAP
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
) = &_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
) = &_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
== NULL
)
832 /* Allocate a buffer if needed. */
833 if (f
->_IO_write_base
== NULL
)
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 (__builtin_expect (_IO_in_backup (f
), 0))
847 size_t nbackup
= f
->_IO_read_end
- f
->_IO_read_ptr
;
848 INTUSE(_IO_free_backup_area
) (f
);
849 f
->_IO_read_base
-= MIN (nbackup
,
850 f
->_IO_read_base
- f
->_IO_buf_base
);
851 f
->_IO_read_ptr
= f
->_IO_read_base
;
854 if (f
->_IO_read_ptr
== f
->_IO_buf_end
)
855 f
->_IO_read_end
= f
->_IO_read_ptr
= f
->_IO_buf_base
;
856 f
->_IO_write_ptr
= f
->_IO_read_ptr
;
857 f
->_IO_write_base
= f
->_IO_write_ptr
;
858 f
->_IO_write_end
= f
->_IO_buf_end
;
859 f
->_IO_read_base
= f
->_IO_read_ptr
= f
->_IO_read_end
;
861 f
->_flags
|= _IO_CURRENTLY_PUTTING
;
862 if (f
->_mode
<= 0 && f
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
863 f
->_IO_write_end
= f
->_IO_write_ptr
;
866 return INTUSE(_IO_do_write
) (f
, f
->_IO_write_base
,
867 f
->_IO_write_ptr
- f
->_IO_write_base
);
868 if (f
->_IO_write_ptr
== f
->_IO_buf_end
) /* Buffer is really full */
869 if (_IO_do_flush (f
) == EOF
)
871 *f
->_IO_write_ptr
++ = ch
;
872 if ((f
->_flags
& _IO_UNBUFFERED
)
873 || ((f
->_flags
& _IO_LINE_BUF
) && ch
== '\n'))
874 if (INTUSE(_IO_do_write
) (f
, f
->_IO_write_base
,
875 f
->_IO_write_ptr
- f
->_IO_write_base
) == EOF
)
877 return (unsigned char) ch
;
879 INTDEF2(_IO_new_file_overflow
, _IO_file_overflow
)
882 _IO_new_file_sync (fp
)
888 /* char* ptr = cur_ptr(); */
889 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
)
890 if (_IO_do_flush(fp
)) return EOF
;
891 delta
= fp
->_IO_read_ptr
- fp
->_IO_read_end
;
895 if (_IO_in_backup (fp
))
896 delta
-= eGptr () - Gbase ();
898 _IO_off64_t new_pos
= _IO_SYSSEEK (fp
, delta
, 1);
899 if (new_pos
!= (_IO_off64_t
) EOF
)
900 fp
->_IO_read_end
= fp
->_IO_read_ptr
;
902 else if (errno
== ESPIPE
)
903 ; /* Ignore error from unseekable devices. */
909 fp
->_offset
= _IO_pos_BAD
;
910 /* FIXME: Cleanup - can this be shared? */
911 /* setg(base(), ptr, ptr); */
914 INTDEF2(_IO_new_file_sync
, _IO_file_sync
)
917 _IO_file_sync_mmap (_IO_FILE
*fp
)
919 if (fp
->_IO_read_ptr
!= fp
->_IO_read_end
)
922 if (_IO_in_backup (fp
))
923 delta
-= eGptr () - Gbase ();
931 (fp
->_fileno
, fp
->_IO_read_ptr
- fp
->_IO_buf_base
, SEEK_SET
)
932 != fp
->_IO_read_ptr
- fp
->_IO_buf_base
)
934 fp
->_flags
|= _IO_ERR_SEEN
;
938 fp
->_offset
= fp
->_IO_read_ptr
- fp
->_IO_buf_base
;
939 fp
->_IO_read_end
= fp
->_IO_read_ptr
= fp
->_IO_read_base
;
945 _IO_new_file_seekoff (fp
, offset
, dir
, mode
)
952 _IO_off64_t delta
, new_offset
;
954 /* POSIX.1 8.2.3.7 says that after a call the fflush() the file
955 offset of the underlying file must be exact. */
956 int must_be_exact
= (fp
->_IO_read_base
== fp
->_IO_read_end
957 && fp
->_IO_write_base
== fp
->_IO_write_ptr
);
960 dir
= _IO_seek_cur
, offset
= 0; /* Don't move any pointers. */
962 /* Flush unwritten characters.
963 (This may do an unneeded write if we seek within the buffer.
964 But to be able to switch to reading, we would need to set
965 egptr to ptr. That can't be done in the current design,
966 which assumes file_ptr() is eGptr. Anyway, since we probably
967 end up flushing when we close(), it doesn't make much difference.)
968 FIXME: simulate mem-papped files. */
970 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
|| _IO_in_put_mode (fp
))
971 if (INTUSE(_IO_switch_to_get_mode
) (fp
))
974 if (fp
->_IO_buf_base
== NULL
)
976 /* It could be that we already have a pushback buffer. */
977 if (fp
->_IO_read_base
!= NULL
)
979 free (fp
->_IO_read_base
);
980 fp
->_flags
&= ~_IO_IN_BACKUP
;
982 INTUSE(_IO_doallocbuf
) (fp
);
983 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
984 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
990 /* Adjust for read-ahead (bytes is buffer). */
991 offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
992 if (fp
->_offset
== _IO_pos_BAD
)
998 result
= _IO_SYSSEEK (fp
, 0, dir
);
1002 fp
->_offset
= result
;
1005 /* Make offset absolute, assuming current pointer is file_ptr(). */
1006 offset
+= fp
->_offset
;
1009 __set_errno (EINVAL
);
1019 struct _G_stat64 st
;
1020 if (_IO_SYSSTAT (fp
, &st
) == 0 && S_ISREG (st
.st_mode
))
1022 offset
+= st
.st_size
;
1029 /* At this point, dir==_IO_seek_set. */
1031 /* If we are only interested in the current position we've found it now. */
1035 /* If destination is within current buffer, optimize: */
1036 if (fp
->_offset
!= _IO_pos_BAD
&& fp
->_IO_read_base
!= NULL
1037 && !_IO_in_backup (fp
))
1039 _IO_off64_t start_offset
= (fp
->_offset
1040 - (fp
->_IO_read_end
- fp
->_IO_buf_base
));
1041 if (offset
>= start_offset
&& offset
< fp
->_offset
)
1043 _IO_setg (fp
, fp
->_IO_buf_base
,
1044 fp
->_IO_buf_base
+ (offset
- start_offset
),
1046 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1048 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1053 if (fp
->_flags
& _IO_NO_READS
)
1056 /* Try to seek to a block boundary, to improve kernel page management. */
1057 new_offset
= offset
& ~(fp
->_IO_buf_end
- fp
->_IO_buf_base
- 1);
1058 delta
= offset
- new_offset
;
1059 if (delta
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1061 new_offset
= offset
;
1064 result
= _IO_SYSSEEK (fp
, new_offset
, 0);
1071 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
1073 ? delta
: fp
->_IO_buf_end
- fp
->_IO_buf_base
));
1076 /* We weren't allowed to read, but try to seek the remainder. */
1077 offset
= count
== EOF
? delta
: delta
-count
;
1082 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ delta
,
1083 fp
->_IO_buf_base
+ count
);
1084 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1085 fp
->_offset
= result
+ count
;
1086 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1090 INTUSE(_IO_unsave_markers
) (fp
);
1091 result
= _IO_SYSSEEK (fp
, offset
, dir
);
1094 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1095 fp
->_offset
= result
;
1096 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1097 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1102 /* We need to do it since it is possible that the file offset in
1103 the kernel may be changed behind our back. It may happen when
1104 we fopen a file and then do a fork. One process may access the
1105 the file and the kernel file offset will be changed. */
1106 if (fp
->_offset
>= 0)
1107 _IO_SYSSEEK (fp
, fp
->_offset
, 0);
1111 INTDEF2(_IO_new_file_seekoff
, _IO_file_seekoff
)
1114 _IO_file_seekoff_mmap (fp
, offset
, dir
, mode
)
1122 /* If we are only interested in the current position, calculate it and
1123 return right now. This calculation does the right thing when we are
1124 using a pushback buffer, but in the usual case has the same value as
1125 (fp->_IO_read_ptr - fp->_IO_buf_base). */
1127 return fp
->_offset
- (fp
->_IO_read_end
- fp
->_IO_read_ptr
);
1132 /* Adjust for read-ahead (bytes is buffer). */
1133 offset
+= fp
->_IO_read_ptr
- fp
->_IO_read_base
;
1138 offset
+= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1141 /* At this point, dir==_IO_seek_set. */
1145 /* No negative offsets are valid. */
1146 __set_errno (EINVAL
);
1150 result
= _IO_SYSSEEK (fp
, offset
, 0);
1154 if (offset
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1155 /* One can fseek arbitrarily past the end of the file
1156 and it is meaningless until one attempts to read.
1157 Leave the buffer pointers in EOF state until underflow. */
1158 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_end
, fp
->_IO_buf_end
);
1160 /* Adjust the read pointers to match the file position,
1161 but so the next read attempt will call underflow. */
1162 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ offset
,
1163 fp
->_IO_buf_base
+ offset
);
1165 fp
->_offset
= result
;
1167 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1173 _IO_file_seekoff_maybe_mmap (_IO_FILE
*fp
, _IO_off64_t offset
, int dir
,
1176 /* We only get here when we haven't tried to read anything yet.
1177 So there is nothing more useful for us to do here than just
1178 the underlying lseek call. */
1180 _IO_off64_t result
= _IO_SYSSEEK (fp
, offset
, dir
);
1184 fp
->_offset
= result
;
1189 _IO_file_read (fp
, buf
, size
)
1194 return (__builtin_expect (fp
->_flags2
& _IO_FLAGS2_NOTCANCEL
, 0)
1195 ? read_not_cancel (fp
->_fileno
, buf
, size
)
1196 : read (fp
->_fileno
, buf
, size
));
1198 INTDEF(_IO_file_read
)
1201 _IO_file_seek (fp
, offset
, dir
)
1207 return _G_LSEEK64 (fp
->_fileno
, offset
, dir
);
1209 return lseek (fp
->_fileno
, offset
, dir
);
1212 INTDEF(_IO_file_seek
)
1215 _IO_file_stat (fp
, st
)
1220 return _G_FSTAT64 (fp
->_fileno
, (struct _G_stat64
*) st
);
1222 return fstat (fp
->_fileno
, (struct stat
*) st
);
1225 INTDEF(_IO_file_stat
)
1228 _IO_file_close_mmap (fp
)
1231 /* In addition to closing the file descriptor we have to unmap the file. */
1232 (void) __munmap (fp
->_IO_buf_base
, fp
->_IO_buf_end
- fp
->_IO_buf_base
);
1233 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
1234 /* Cancelling close should be avoided if possible since it leaves an
1235 unrecoverable state behind. */
1236 return close_not_cancel (fp
->_fileno
);
1243 /* Cancelling close should be avoided if possible since it leaves an
1244 unrecoverable state behind. */
1245 return close_not_cancel (fp
->_fileno
);
1247 INTDEF(_IO_file_close
)
1250 _IO_new_file_write (f
, data
, n
)
1255 _IO_ssize_t to_do
= n
;
1258 _IO_ssize_t count
= (__builtin_expect (f
->_flags2
1259 & _IO_FLAGS2_NOTCANCEL
, 0)
1260 ? write_not_cancel (f
->_fileno
, data
, to_do
)
1261 : write (f
->_fileno
, data
, to_do
));
1264 f
->_flags
|= _IO_ERR_SEEN
;
1268 data
= (void *) ((char *) data
+ count
);
1271 if (f
->_offset
>= 0)
1277 _IO_new_file_xsputn (f
, data
, n
)
1282 register const char *s
= (const char *) data
;
1283 _IO_size_t to_do
= n
;
1285 _IO_size_t count
= 0;
1289 /* This is an optimized implementation.
1290 If the amount to be written straddles a block boundary
1291 (or the filebuf is unbuffered), use sys_write directly. */
1293 /* First figure out how much space is available in the buffer. */
1294 if ((f
->_flags
& _IO_LINE_BUF
) && (f
->_flags
& _IO_CURRENTLY_PUTTING
))
1296 count
= f
->_IO_buf_end
- f
->_IO_write_ptr
;
1299 register const char *p
;
1300 for (p
= s
+ n
; p
> s
; )
1311 else if (f
->_IO_write_end
> f
->_IO_write_ptr
)
1312 count
= f
->_IO_write_end
- f
->_IO_write_ptr
; /* Space available. */
1314 /* Then fill the buffer. */
1322 f
->_IO_write_ptr
= __mempcpy (f
->_IO_write_ptr
, s
, count
);
1324 memcpy (f
->_IO_write_ptr
, s
, count
);
1325 f
->_IO_write_ptr
+= count
;
1331 register char *p
= f
->_IO_write_ptr
;
1332 register int i
= (int) count
;
1335 f
->_IO_write_ptr
= p
;
1339 if (to_do
+ must_flush
> 0)
1341 _IO_size_t block_size
, do_write
;
1342 /* Next flush the (full) buffer. */
1343 if (_IO_OVERFLOW (f
, EOF
) == EOF
)
1344 /* If nothing else has to be written we must not signal the
1345 caller that everything has been written. */
1346 return to_do
== 0 ? EOF
: n
- to_do
;
1348 /* Try to maintain alignment: write a whole number of blocks.
1349 dont_write is what gets left over. */
1350 block_size
= f
->_IO_buf_end
- f
->_IO_buf_base
;
1351 do_write
= to_do
- (block_size
>= 128 ? to_do
% block_size
: 0);
1355 count
= new_do_write (f
, s
, do_write
);
1357 if (count
< do_write
)
1361 /* Now write out the remainder. Normally, this will fit in the
1362 buffer, but it's somewhat messier for line-buffered files,
1363 so we let _IO_default_xsputn handle the general case. */
1365 to_do
-= INTUSE(_IO_default_xsputn
) (f
, s
+do_write
, to_do
);
1369 INTDEF2(_IO_new_file_xsputn
, _IO_file_xsputn
)
1372 _IO_file_xsgetn (fp
, data
, n
)
1377 register _IO_size_t want
, have
;
1378 register _IO_ssize_t count
;
1379 register char *s
= data
;
1383 if (fp
->_IO_buf_base
== NULL
)
1385 /* Maybe we already have a push back pointer. */
1386 if (fp
->_IO_save_base
!= NULL
)
1388 free (fp
->_IO_save_base
);
1389 fp
->_flags
&= ~_IO_IN_BACKUP
;
1391 INTUSE(_IO_doallocbuf
) (fp
);
1396 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1399 memcpy (s
, fp
->_IO_read_ptr
, want
);
1400 fp
->_IO_read_ptr
+= want
;
1408 s
= __mempcpy (s
, fp
->_IO_read_ptr
, have
);
1410 memcpy (s
, fp
->_IO_read_ptr
, have
);
1414 fp
->_IO_read_ptr
+= have
;
1417 /* Check for backup and repeat */
1418 if (_IO_in_backup (fp
))
1420 _IO_switch_to_main_get_area (fp
);
1424 /* If we now want less than a buffer, underflow and repeat
1425 the copy. Otherwise, _IO_SYSREAD directly to
1427 if (fp
->_IO_buf_base
1428 && want
< (size_t) (fp
->_IO_buf_end
- fp
->_IO_buf_base
))
1430 if (__underflow (fp
) == EOF
)
1436 /* These must be set before the sysread as we might longjmp out
1437 waiting for input. */
1438 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1439 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1441 /* Try to maintain alignment: read a whole number of blocks. */
1443 if (fp
->_IO_buf_base
)
1445 _IO_size_t block_size
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1446 if (block_size
>= 128)
1447 count
-= want
% block_size
;
1450 count
= _IO_SYSREAD (fp
, s
, count
);
1454 fp
->_flags
|= _IO_EOF_SEEN
;
1456 fp
->_flags
|= _IO_ERR_SEEN
;
1463 if (fp
->_offset
!= _IO_pos_BAD
)
1464 _IO_pos_adjust (fp
->_offset
, count
);
1470 INTDEF(_IO_file_xsgetn
)
1472 static _IO_size_t
_IO_file_xsgetn_mmap (_IO_FILE
*, void *, _IO_size_t
);
1474 _IO_file_xsgetn_mmap (fp
, data
, n
)
1479 register _IO_size_t have
;
1480 char *read_ptr
= fp
->_IO_read_ptr
;
1481 register char *s
= (char *) data
;
1483 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1487 if (__builtin_expect (_IO_in_backup (fp
), 0))
1490 s
= __mempcpy (s
, read_ptr
, have
);
1492 memcpy (s
, read_ptr
, have
);
1496 _IO_switch_to_main_get_area (fp
);
1497 read_ptr
= fp
->_IO_read_ptr
;
1498 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1503 /* Check that we are mapping all of the file, in case it grew. */
1504 if (__builtin_expect (mmap_remap_check (fp
), 0))
1505 /* We punted mmap, so complete with the vanilla code. */
1506 return s
- (char *) data
+ _IO_XSGETN (fp
, data
, n
);
1508 read_ptr
= fp
->_IO_read_ptr
;
1509 have
= fp
->_IO_read_end
- read_ptr
;
1514 fp
->_flags
|= _IO_EOF_SEEN
;
1518 have
= MIN (have
, n
);
1520 s
= __mempcpy (s
, read_ptr
, have
);
1522 memcpy (s
, read_ptr
, have
);
1525 fp
->_IO_read_ptr
= read_ptr
+ have
;
1528 return s
- (char *) data
;
1531 static _IO_size_t
_IO_file_xsgetn_maybe_mmap (_IO_FILE
*, void *, _IO_size_t
);
1533 _IO_file_xsgetn_maybe_mmap (fp
, data
, n
)
1538 /* We only get here if this is the first attempt to read something.
1539 Decide which operations to use and then punt to the chosen one. */
1541 decide_maybe_mmap (fp
);
1542 return _IO_XSGETN (fp
, data
, n
);
1546 # undef _IO_do_write
1547 # undef _IO_file_close_it
1548 versioned_symbol (libc
, _IO_new_do_write
, _IO_do_write
, GLIBC_2_1
);
1549 versioned_symbol (libc
, _IO_new_file_attach
, _IO_file_attach
, GLIBC_2_1
);
1550 versioned_symbol (libc
, _IO_new_file_close_it
, _IO_file_close_it
, GLIBC_2_1
);
1551 versioned_symbol (libc
, _IO_new_file_finish
, _IO_file_finish
, GLIBC_2_1
);
1552 versioned_symbol (libc
, _IO_new_file_fopen
, _IO_file_fopen
, GLIBC_2_1
);
1553 versioned_symbol (libc
, _IO_new_file_init
, _IO_file_init
, GLIBC_2_1
);
1554 versioned_symbol (libc
, _IO_new_file_setbuf
, _IO_file_setbuf
, GLIBC_2_1
);
1555 versioned_symbol (libc
, _IO_new_file_sync
, _IO_file_sync
, GLIBC_2_1
);
1556 versioned_symbol (libc
, _IO_new_file_overflow
, _IO_file_overflow
, GLIBC_2_1
);
1557 versioned_symbol (libc
, _IO_new_file_seekoff
, _IO_file_seekoff
, GLIBC_2_1
);
1558 versioned_symbol (libc
, _IO_new_file_underflow
, _IO_file_underflow
, GLIBC_2_1
);
1559 versioned_symbol (libc
, _IO_new_file_write
, _IO_file_write
, GLIBC_2_1
);
1560 versioned_symbol (libc
, _IO_new_file_xsputn
, _IO_file_xsputn
, GLIBC_2_1
);
1563 const struct _IO_jump_t _IO_file_jumps
=
1566 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1567 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1568 JUMP_INIT(underflow
, INTUSE(_IO_file_underflow
)),
1569 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1570 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1571 JUMP_INIT(xsputn
, INTUSE(_IO_file_xsputn
)),
1572 JUMP_INIT(xsgetn
, INTUSE(_IO_file_xsgetn
)),
1573 JUMP_INIT(seekoff
, _IO_new_file_seekoff
),
1574 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1575 JUMP_INIT(setbuf
, _IO_new_file_setbuf
),
1576 JUMP_INIT(sync
, _IO_new_file_sync
),
1577 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1578 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1579 JUMP_INIT(write
, _IO_new_file_write
),
1580 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1581 JUMP_INIT(close
, INTUSE(_IO_file_close
)),
1582 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1583 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1584 JUMP_INIT(imbue
, _IO_default_imbue
)
1586 libc_hidden_data_def (_IO_file_jumps
)
1588 const struct _IO_jump_t _IO_file_jumps_mmap
=
1591 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1592 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1593 JUMP_INIT(underflow
, _IO_file_underflow_mmap
),
1594 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1595 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1596 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1597 JUMP_INIT(xsgetn
, _IO_file_xsgetn_mmap
),
1598 JUMP_INIT(seekoff
, _IO_file_seekoff_mmap
),
1599 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1600 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1601 JUMP_INIT(sync
, _IO_file_sync_mmap
),
1602 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1603 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1604 JUMP_INIT(write
, _IO_new_file_write
),
1605 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1606 JUMP_INIT(close
, _IO_file_close_mmap
),
1607 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1608 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1609 JUMP_INIT(imbue
, _IO_default_imbue
)
1612 const struct _IO_jump_t _IO_file_jumps_maybe_mmap
=
1615 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1616 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1617 JUMP_INIT(underflow
, _IO_file_underflow_maybe_mmap
),
1618 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1619 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1620 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1621 JUMP_INIT(xsgetn
, _IO_file_xsgetn_maybe_mmap
),
1622 JUMP_INIT(seekoff
, _IO_file_seekoff_maybe_mmap
),
1623 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1624 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1625 JUMP_INIT(sync
, _IO_new_file_sync
),
1626 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1627 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1628 JUMP_INIT(write
, _IO_new_file_write
),
1629 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1630 JUMP_INIT(close
, _IO_file_close
),
1631 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1632 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1633 JUMP_INIT(imbue
, _IO_default_imbue
)