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
)
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
< 4; ++i
)
301 read_write
&= _IO_IS_APPENDING
;
303 last_recognized
= mode
;
309 last_recognized
= mode
;
314 last_recognized
= mode
;
323 result
= _IO_file_open (fp
, filename
, omode
|oflags
, oprot
, read_write
,
330 /* Test whether the mode string specifies the conversion. */
331 cs
= strstr (last_recognized
+ 1, ",ccs=");
334 /* Yep. Load the appropriate conversions and set the orientation
336 struct gconv_fcts fcts
;
337 struct _IO_codecvt
*cc
;
338 char *endp
= __strchrnul (cs
+ 5, ',');
339 char ccs
[endp
- (cs
+ 5) + 3];
341 *((char *) __mempcpy (ccs
, cs
+ 5, endp
- (cs
+ 5))) = '\0';
344 if (__wcsmbs_named_conv (&fcts
, ccs
[2] == '\0'
345 ? upstr (ccs
, cs
+ 5) : ccs
) != 0)
347 /* Something went wrong, we cannot load the conversion modules.
348 This means we cannot proceed since the user explicitly asked
350 __set_errno (EINVAL
);
354 assert (fcts
.towc_nsteps
== 1);
355 assert (fcts
.tomb_nsteps
== 1);
357 fp
->_wide_data
->_IO_read_ptr
= fp
->_wide_data
->_IO_read_end
;
358 fp
->_wide_data
->_IO_write_ptr
= fp
->_wide_data
->_IO_write_base
;
360 /* Clear the state. We start all over again. */
361 memset (&fp
->_wide_data
->_IO_state
, '\0', sizeof (__mbstate_t
));
362 memset (&fp
->_wide_data
->_IO_last_state
, '\0', sizeof (__mbstate_t
));
364 cc
= fp
->_codecvt
= &fp
->_wide_data
->_codecvt
;
366 /* The functions are always the same. */
367 *cc
= __libio_codecvt
;
369 cc
->__cd_in
.__cd
.__nsteps
= fcts
.towc_nsteps
;
370 cc
->__cd_in
.__cd
.__steps
= fcts
.towc
;
372 cc
->__cd_in
.__cd
.__data
[0].__invocation_counter
= 0;
373 cc
->__cd_in
.__cd
.__data
[0].__internal_use
= 1;
374 cc
->__cd_in
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
375 cc
->__cd_in
.__cd
.__data
[0].__statep
= &result
->_wide_data
->_IO_state
;
377 /* XXX For now no transliteration. */
378 cc
->__cd_in
.__cd
.__data
[0].__trans
= NULL
;
380 cc
->__cd_out
.__cd
.__nsteps
= fcts
.tomb_nsteps
;
381 cc
->__cd_out
.__cd
.__steps
= fcts
.tomb
;
383 cc
->__cd_out
.__cd
.__data
[0].__invocation_counter
= 0;
384 cc
->__cd_out
.__cd
.__data
[0].__internal_use
= 1;
385 cc
->__cd_out
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
386 cc
->__cd_out
.__cd
.__data
[0].__statep
=
387 &result
->_wide_data
->_IO_state
;
389 /* And now the transliteration. */
390 cc
->__cd_out
.__cd
.__data
[0].__trans
= &__libio_translit
;
392 /* Set the mode now. */
395 /* We don't need the step data structure anymore. */
396 __gconv_release_cache (fcts
.towc
, fcts
.towc_nsteps
);
397 __gconv_release_cache (fcts
.tomb
, fcts
.tomb_nsteps
);
400 #endif /* GNU libc */
404 INTDEF2(_IO_new_file_fopen
, _IO_file_fopen
)
407 _IO_new_file_attach (fp
, fd
)
411 if (_IO_file_is_open (fp
))
414 fp
->_flags
&= ~(_IO_NO_READS
+_IO_NO_WRITES
);
415 fp
->_flags
|= _IO_DELETE_DONT_CLOSE
;
416 /* Get the current position of the file. */
417 /* We have to do that since that may be junk. */
418 fp
->_offset
= _IO_pos_BAD
;
419 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_cur
, _IOS_INPUT
|_IOS_OUTPUT
)
420 == _IO_pos_BAD
&& errno
!= ESPIPE
)
424 INTDEF2(_IO_new_file_attach
, _IO_file_attach
)
427 _IO_new_file_setbuf (fp
, p
, len
)
432 if (_IO_default_setbuf (fp
, p
, len
) == NULL
)
435 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
437 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
441 INTDEF2(_IO_new_file_setbuf
, _IO_file_setbuf
)
445 _IO_file_setbuf_mmap (fp
, p
, len
)
452 /* Change the function table. */
453 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
454 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
456 /* And perform the normal operation. */
457 result
= _IO_new_file_setbuf (fp
, p
, len
);
459 /* If the call failed, restore to using mmap. */
462 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_file_jumps_mmap
;
463 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
469 static int new_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
471 /* Write TO_DO bytes from DATA to FP.
472 Then mark FP as having empty buffers. */
475 _IO_new_do_write (fp
, data
, to_do
)
480 return (to_do
== 0 || new_do_write (fp
, data
, to_do
) == to_do
) ? 0 : EOF
;
482 INTDEF2(_IO_new_do_write
, _IO_do_write
)
486 new_do_write (fp
, data
, to_do
)
492 if (fp
->_flags
& _IO_IS_APPENDING
)
493 /* On a system without a proper O_APPEND implementation,
494 you would need to sys_seek(0, SEEK_END) here, but is
495 is not needed nor desirable for Unix- or Posix-like systems.
496 Instead, just indicate that offset (before and after) is
498 fp
->_offset
= _IO_pos_BAD
;
499 else if (fp
->_IO_read_end
!= fp
->_IO_write_base
)
502 = _IO_SYSSEEK (fp
, fp
->_IO_write_base
- fp
->_IO_read_end
, 1);
503 if (new_pos
== _IO_pos_BAD
)
505 fp
->_offset
= new_pos
;
507 count
= _IO_SYSWRITE (fp
, data
, to_do
);
508 if (fp
->_cur_column
&& count
)
509 fp
->_cur_column
= INTUSE(_IO_adjust_column
) (fp
->_cur_column
- 1, data
,
511 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
512 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_buf_base
;
513 fp
->_IO_write_end
= (fp
->_mode
<= 0
514 && (fp
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
515 ? fp
->_IO_buf_base
: fp
->_IO_buf_end
);
520 _IO_new_file_underflow (fp
)
525 /* SysV does not make this test; take it out for compatibility */
526 if (fp
->_flags
& _IO_EOF_SEEN
)
530 if (fp
->_flags
& _IO_NO_READS
)
532 fp
->_flags
|= _IO_ERR_SEEN
;
536 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
537 return *(unsigned char *) fp
->_IO_read_ptr
;
539 if (fp
->_IO_buf_base
== NULL
)
541 /* Maybe we already have a push back pointer. */
542 if (fp
->_IO_save_base
!= NULL
)
544 free (fp
->_IO_save_base
);
545 fp
->_flags
&= ~_IO_IN_BACKUP
;
547 INTUSE(_IO_doallocbuf
) (fp
);
550 /* Flush all line buffered files before reading. */
551 /* FIXME This can/should be moved to genops ?? */
552 if (fp
->_flags
& (_IO_LINE_BUF
|_IO_UNBUFFERED
))
555 INTUSE(_IO_flush_all_linebuffered
) ();
557 /* We used to flush all line-buffered stream. This really isn't
558 required by any standard. My recollection is that
559 traditional Unix systems did this for stdout. stderr better
560 not be line buffered. So we do just that here
561 explicitly. --drepper */
562 _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile
,
564 _IO_flockfile (_IO_stdout
);
566 if ((_IO_stdout
->_flags
& (_IO_LINKED
| _IO_NO_WRITES
| _IO_LINE_BUF
))
567 == (_IO_LINKED
| _IO_LINE_BUF
))
568 _IO_OVERFLOW (_IO_stdout
, EOF
);
570 _IO_funlockfile (_IO_stdout
);
571 _IO_cleanup_region_end (0);
575 INTUSE(_IO_switch_to_get_mode
) (fp
);
577 /* This is very tricky. We have to adjust those
578 pointers before we call _IO_SYSREAD () since
579 we may longjump () out while waiting for
580 input. Those pointers may be screwed up. H.J. */
581 fp
->_IO_read_base
= fp
->_IO_read_ptr
= fp
->_IO_buf_base
;
582 fp
->_IO_read_end
= fp
->_IO_buf_base
;
583 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
586 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
587 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
591 fp
->_flags
|= _IO_EOF_SEEN
;
593 fp
->_flags
|= _IO_ERR_SEEN
, count
= 0;
595 fp
->_IO_read_end
+= count
;
598 if (fp
->_offset
!= _IO_pos_BAD
)
599 _IO_pos_adjust (fp
->_offset
, count
);
600 return *(unsigned char *) fp
->_IO_read_ptr
;
602 INTDEF2(_IO_new_file_underflow
, _IO_file_underflow
)
604 /* Guts of underflow callback if we mmap the file. This stats the file and
605 updates the stream state to match. In the normal case we return zero.
606 If the file is no longer eligible for mmap, its jump tables are reset to
607 the vanilla ones and we return nonzero. */
609 mmap_remap_check (_IO_FILE
*fp
)
613 if (_IO_SYSSTAT (fp
, &st
) == 0
614 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
615 /* Limit the file size to 1MB for 32-bit machines. */
616 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024))
618 const size_t pagesize
= __getpagesize ();
619 # define ROUNDED(x) (((x) + pagesize - 1) & ~(pagesize - 1))
620 if (ROUNDED (st
.st_size
) < ROUNDED (fp
->_IO_buf_end
623 /* We can trim off some pages past the end of the file. */
624 (void) __munmap (fp
->_IO_buf_base
+ ROUNDED (st
.st_size
),
625 ROUNDED (fp
->_IO_buf_end
- fp
->_IO_buf_base
)
626 - ROUNDED (st
.st_size
));
627 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
629 else if (ROUNDED (st
.st_size
) > ROUNDED (fp
->_IO_buf_end
632 /* The file added some pages. We need to remap it. */
634 #if defined __linux__ /* XXX */
635 p
= __mremap (fp
->_IO_buf_base
, ROUNDED (fp
->_IO_buf_end
637 ROUNDED (st
.st_size
), MREMAP_MAYMOVE
);
640 (void) __munmap (fp
->_IO_buf_base
,
641 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
645 (void) __munmap (fp
->_IO_buf_base
,
646 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
648 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
651 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
657 fp
->_IO_buf_base
= p
;
658 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
662 /* The number of pages didn't change. */
663 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
667 fp
->_offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
668 _IO_setg (fp
, fp
->_IO_buf_base
,
669 fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
670 ? fp
->_IO_buf_base
+ fp
->_offset
: fp
->_IO_buf_end
,
673 /* If we are already positioned at or past the end of the file, don't
674 change the current offset. If not, seek past what we have mapped,
675 mimicking the position left by a normal underflow reading into its
678 if (fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
)
686 (fp
->_fileno
, fp
->_IO_buf_end
- fp
->_IO_buf_base
, SEEK_SET
)
687 != fp
->_IO_buf_end
- fp
->_IO_buf_base
)
688 fp
->_flags
|= _IO_ERR_SEEN
;
690 fp
->_offset
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
697 /* Life is no longer good for mmap. Punt it. */
698 (void) __munmap (fp
->_IO_buf_base
,
699 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
701 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
702 _IO_setg (fp
, NULL
, NULL
, NULL
);
704 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
706 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
707 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
713 /* Special callback replacing the underflow callbacks if we mmap the file. */
715 _IO_file_underflow_mmap (_IO_FILE
*fp
)
717 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
718 return *(unsigned char *) fp
->_IO_read_ptr
;
720 if (__builtin_expect (mmap_remap_check (fp
), 0))
721 /* We punted to the regular file functions. */
722 return _IO_UNDERFLOW (fp
);
724 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
725 return *(unsigned char *) fp
->_IO_read_ptr
;
727 fp
->_flags
|= _IO_EOF_SEEN
;
732 decide_maybe_mmap (_IO_FILE
*fp
)
734 /* We use the file in read-only mode. This could mean we can
735 mmap the file and use it without any copying. But not all
736 file descriptors are for mmap-able objects and on 32-bit
737 machines we don't want to map files which are too large since
738 this would require too much virtual memory. */
741 if (_IO_SYSSTAT (fp
, &st
) == 0
742 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
743 /* Limit the file size to 1MB for 32-bit machines. */
744 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024)
746 && (fp
->_offset
== _IO_pos_BAD
|| fp
->_offset
<= st
.st_size
))
748 /* Try to map the file. */
752 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
754 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
758 /* OK, we managed to map the file. Set the buffer up and use a
759 special jump table with simplified underflow functions which
760 never tries to read anything from the file. */
768 (fp
->_fileno
, st
.st_size
, SEEK_SET
) != st
.st_size
)
770 (void) __munmap (p
, st
.st_size
);
771 fp
->_offset
= _IO_pos_BAD
;
775 INTUSE(_IO_setb
) (fp
, p
, (char *) p
+ st
.st_size
, 0);
777 if (fp
->_offset
== _IO_pos_BAD
)
780 _IO_setg (fp
, p
, p
+ fp
->_offset
, p
+ st
.st_size
);
781 fp
->_offset
= st
.st_size
;
784 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_file_jumps_mmap
;
786 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_wfile_jumps_mmap
;
787 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
794 /* We couldn't use mmap, so revert to the vanilla file operations. */
797 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
799 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
800 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
804 _IO_file_underflow_maybe_mmap (_IO_FILE
*fp
)
806 /* This is the first read attempt. Choose mmap or vanilla operations
807 and then punt to the chosen underflow routine. */
808 decide_maybe_mmap (fp
);
809 return _IO_UNDERFLOW (fp
);
814 _IO_new_file_overflow (f
, ch
)
818 if (f
->_flags
& _IO_NO_WRITES
) /* SET ERROR */
820 f
->_flags
|= _IO_ERR_SEEN
;
824 /* If currently reading or no buffer allocated. */
825 if ((f
->_flags
& _IO_CURRENTLY_PUTTING
) == 0 || f
->_IO_write_base
== 0)
827 /* Allocate a buffer if needed. */
828 if (f
->_IO_write_base
== 0)
830 INTUSE(_IO_doallocbuf
) (f
);
831 _IO_setg (f
, f
->_IO_buf_base
, f
->_IO_buf_base
, f
->_IO_buf_base
);
833 /* Otherwise must be currently reading.
834 If _IO_read_ptr (and hence also _IO_read_end) is at the buffer end,
835 logically slide the buffer forwards one block (by setting the
836 read pointers to all point at the beginning of the block). This
837 makes room for subsequent output.
838 Otherwise, set the read pointers to _IO_read_end (leaving that
839 alone, so it can continue to correspond to the external position). */
840 if (f
->_IO_read_ptr
== f
->_IO_buf_end
)
841 f
->_IO_read_end
= f
->_IO_read_ptr
= f
->_IO_buf_base
;
842 f
->_IO_write_ptr
= f
->_IO_read_ptr
;
843 f
->_IO_write_base
= f
->_IO_write_ptr
;
844 f
->_IO_write_end
= f
->_IO_buf_end
;
845 f
->_IO_read_base
= f
->_IO_read_ptr
= f
->_IO_read_end
;
847 f
->_flags
|= _IO_CURRENTLY_PUTTING
;
848 if (f
->_mode
<= 0 && f
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
849 f
->_IO_write_end
= f
->_IO_write_ptr
;
852 return _IO_new_do_write(f
, f
->_IO_write_base
,
853 f
->_IO_write_ptr
- f
->_IO_write_base
);
854 if (f
->_IO_write_ptr
== f
->_IO_buf_end
) /* Buffer is really full */
855 if (_IO_do_flush (f
) == EOF
)
857 *f
->_IO_write_ptr
++ = ch
;
858 if ((f
->_flags
& _IO_UNBUFFERED
)
859 || ((f
->_flags
& _IO_LINE_BUF
) && ch
== '\n'))
860 if (_IO_new_do_write(f
, f
->_IO_write_base
,
861 f
->_IO_write_ptr
- f
->_IO_write_base
) == EOF
)
863 return (unsigned char) ch
;
865 INTDEF2(_IO_new_file_overflow
, _IO_file_overflow
)
868 _IO_new_file_sync (fp
)
874 /* char* ptr = cur_ptr(); */
875 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
)
876 if (_IO_do_flush(fp
)) return EOF
;
877 delta
= fp
->_IO_read_ptr
- fp
->_IO_read_end
;
881 if (_IO_in_backup (fp
))
882 delta
-= eGptr () - Gbase ();
884 _IO_off64_t new_pos
= _IO_SYSSEEK (fp
, delta
, 1);
885 if (new_pos
!= (_IO_off64_t
) EOF
)
886 fp
->_IO_read_end
= fp
->_IO_read_ptr
;
888 else if (errno
== ESPIPE
)
889 ; /* Ignore error from unseekable devices. */
895 fp
->_offset
= _IO_pos_BAD
;
896 /* FIXME: Cleanup - can this be shared? */
897 /* setg(base(), ptr, ptr); */
900 INTDEF2(_IO_new_file_sync
, _IO_file_sync
)
903 _IO_file_sync_mmap (_IO_FILE
*fp
)
905 if (fp
->_IO_read_ptr
!= fp
->_IO_read_end
)
908 if (_IO_in_backup (fp
))
909 delta
-= eGptr () - Gbase ();
917 (fp
->_fileno
, fp
->_IO_read_ptr
- fp
->_IO_buf_base
, SEEK_SET
)
918 != fp
->_IO_read_ptr
- fp
->_IO_buf_base
)
920 fp
->_flags
|= _IO_ERR_SEEN
;
924 fp
->_offset
= fp
->_IO_read_ptr
- fp
->_IO_buf_base
;
925 fp
->_IO_read_end
= fp
->_IO_read_ptr
= fp
->_IO_read_base
;
931 _IO_new_file_seekoff (fp
, offset
, dir
, mode
)
938 _IO_off64_t delta
, new_offset
;
940 /* POSIX.1 8.2.3.7 says that after a call the fflush() the file
941 offset of the underlying file must be exact. */
942 int must_be_exact
= (fp
->_IO_read_base
== fp
->_IO_read_end
943 && fp
->_IO_write_base
== fp
->_IO_write_ptr
);
946 dir
= _IO_seek_cur
, offset
= 0; /* Don't move any pointers. */
948 /* Flush unwritten characters.
949 (This may do an unneeded write if we seek within the buffer.
950 But to be able to switch to reading, we would need to set
951 egptr to ptr. That can't be done in the current design,
952 which assumes file_ptr() is eGptr. Anyway, since we probably
953 end up flushing when we close(), it doesn't make much difference.)
954 FIXME: simulate mem-papped files. */
956 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
|| _IO_in_put_mode (fp
))
957 if (INTUSE(_IO_switch_to_get_mode
) (fp
))
960 if (fp
->_IO_buf_base
== NULL
)
962 /* It could be that we already have a pushback buffer. */
963 if (fp
->_IO_read_base
!= NULL
)
965 free (fp
->_IO_read_base
);
966 fp
->_flags
&= ~_IO_IN_BACKUP
;
968 INTUSE(_IO_doallocbuf
) (fp
);
969 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
970 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
976 /* Adjust for read-ahead (bytes is buffer). */
977 offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
978 if (fp
->_offset
== _IO_pos_BAD
)
980 /* Make offset absolute, assuming current pointer is file_ptr(). */
981 offset
+= fp
->_offset
;
984 __set_errno (EINVAL
);
995 if (_IO_SYSSTAT (fp
, &st
) == 0 && S_ISREG (st
.st_mode
))
997 offset
+= st
.st_size
;
1004 /* At this point, dir==_IO_seek_set. */
1006 /* If we are only interested in the current position we've found it now. */
1010 /* If destination is within current buffer, optimize: */
1011 if (fp
->_offset
!= _IO_pos_BAD
&& fp
->_IO_read_base
!= NULL
1012 && !_IO_in_backup (fp
))
1014 /* Offset relative to start of main get area. */
1015 _IO_off64_t rel_offset
= (offset
- fp
->_offset
1016 + (fp
->_IO_read_end
- fp
->_IO_read_base
));
1017 if (rel_offset
>= 0)
1020 if (_IO_in_backup (fp
))
1021 _IO_switch_to_main_get_area (fp
);
1023 if (rel_offset
<= fp
->_IO_read_end
- fp
->_IO_read_base
)
1025 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ rel_offset
,
1027 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1029 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1034 /* If we have streammarkers, seek forward by reading ahead. */
1035 if (_IO_have_markers (fp
))
1037 int to_skip
= rel_offset
1038 - (fp
->_IO_read_ptr
- fp
->_IO_read_base
);
1039 if (ignore (to_skip
) != to_skip
)
1041 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1047 if (rel_offset
< 0 && rel_offset
>= Bbase () - Bptr ())
1049 if (!_IO_in_backup (fp
))
1050 _IO_switch_to_backup_area (fp
);
1051 gbump (fp
->_IO_read_end
+ rel_offset
- fp
->_IO_read_ptr
);
1052 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1059 INTUSE(_IO_unsave_markers
) (fp
);
1062 if (fp
->_flags
& _IO_NO_READS
)
1065 /* Try to seek to a block boundary, to improve kernel page management. */
1066 new_offset
= offset
& ~(fp
->_IO_buf_end
- fp
->_IO_buf_base
- 1);
1067 delta
= offset
- new_offset
;
1068 if (delta
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1070 new_offset
= offset
;
1073 result
= _IO_SYSSEEK (fp
, new_offset
, 0);
1080 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
1082 ? delta
: fp
->_IO_buf_end
- fp
->_IO_buf_base
));
1085 /* We weren't allowed to read, but try to seek the remainder. */
1086 offset
= count
== EOF
? delta
: delta
-count
;
1091 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ delta
,
1092 fp
->_IO_buf_base
+ count
);
1093 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1094 fp
->_offset
= result
+ count
;
1095 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1099 INTUSE(_IO_unsave_markers
) (fp
);
1100 result
= _IO_SYSSEEK (fp
, offset
, dir
);
1103 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1104 fp
->_offset
= result
;
1105 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1106 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1111 /* We need to do it since it is possible that the file offset in
1112 the kernel may be changed behind our back. It may happen when
1113 we fopen a file and then do a fork. One process may access the
1114 the file and the kernel file offset will be changed. */
1115 if (fp
->_offset
>= 0)
1116 _IO_SYSSEEK (fp
, fp
->_offset
, 0);
1120 INTDEF2(_IO_new_file_seekoff
, _IO_file_seekoff
)
1123 _IO_file_seekoff_mmap (fp
, offset
, dir
, mode
)
1131 /* If we are only interested in the current position, calculate it and
1132 return right now. This calculation does the right thing when we are
1133 using a pushback buffer, but in the usual case has the same value as
1134 (fp->_IO_read_ptr - fp->_IO_buf_base). */
1136 return fp
->_offset
- (fp
->_IO_read_end
- fp
->_IO_read_ptr
);
1141 /* Adjust for read-ahead (bytes is buffer). */
1142 offset
+= fp
->_IO_read_ptr
- fp
->_IO_read_base
;
1147 offset
+= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1150 /* At this point, dir==_IO_seek_set. */
1154 /* No negative offsets are valid. */
1155 __set_errno (EINVAL
);
1159 result
= _IO_SYSSEEK (fp
, offset
, 0);
1163 if (offset
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1164 /* One can fseek arbitrarily past the end of the file
1165 and it is meaningless until one attempts to read.
1166 Leave the buffer pointers in EOF state until underflow. */
1167 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_end
, fp
->_IO_buf_end
);
1169 /* Adjust the read pointers to match the file position,
1170 but so the next read attempt will call underflow. */
1171 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ offset
,
1172 fp
->_IO_buf_base
+ offset
);
1174 fp
->_offset
= result
;
1176 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1182 _IO_file_seekoff_maybe_mmap (fp
, offset
, dir
, mode
)
1188 /* We only get here when we haven't tried to read anything yet.
1189 So there is nothing more useful for us to do here than just
1190 the underlying lseek call. */
1192 _IO_off64_t result
= _IO_SYSSEEK (fp
, offset
, dir
);
1196 fp
->_offset
= result
;
1201 _IO_file_read (fp
, buf
, size
)
1206 return read (fp
->_fileno
, buf
, size
);
1208 INTDEF(_IO_file_read
)
1211 _IO_file_seek (fp
, offset
, dir
)
1217 return _G_LSEEK64 (fp
->_fileno
, offset
, dir
);
1219 return lseek (fp
->_fileno
, offset
, dir
);
1222 INTDEF(_IO_file_seek
)
1225 _IO_file_stat (fp
, st
)
1230 return _G_FSTAT64 (fp
->_fileno
, (struct _G_stat64
*) st
);
1232 return fstat (fp
->_fileno
, (struct stat
*) st
);
1235 INTDEF(_IO_file_stat
)
1238 _IO_file_close_mmap (fp
)
1241 /* In addition to closing the file descriptor we have to unmap the file. */
1242 (void) __munmap (fp
->_IO_buf_base
, fp
->_IO_buf_end
- fp
->_IO_buf_base
);
1243 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
1244 return close (fp
->_fileno
);
1251 return close (fp
->_fileno
);
1253 INTDEF(_IO_file_close
)
1256 _IO_new_file_write (f
, data
, n
)
1261 _IO_ssize_t to_do
= n
;
1264 _IO_ssize_t count
= write (f
->_fileno
, data
, to_do
);
1267 f
->_flags
|= _IO_ERR_SEEN
;
1271 data
= (void *) ((char *) data
+ count
);
1274 if (f
->_offset
>= 0)
1280 _IO_new_file_xsputn (f
, data
, n
)
1285 register const char *s
= (const char *) data
;
1286 _IO_size_t to_do
= n
;
1292 /* This is an optimized implementation.
1293 If the amount to be written straddles a block boundary
1294 (or the filebuf is unbuffered), use sys_write directly. */
1296 /* First figure out how much space is available in the buffer. */
1297 count
= f
->_IO_write_end
- f
->_IO_write_ptr
; /* Space available. */
1298 if ((f
->_flags
& _IO_LINE_BUF
) && (f
->_flags
& _IO_CURRENTLY_PUTTING
))
1300 count
= f
->_IO_buf_end
- f
->_IO_write_ptr
;
1303 register const char *p
;
1304 for (p
= s
+ n
; p
> s
; )
1315 /* Then fill the buffer. */
1323 f
->_IO_write_ptr
= __mempcpy (f
->_IO_write_ptr
, s
, count
);
1325 memcpy (f
->_IO_write_ptr
, s
, count
);
1326 f
->_IO_write_ptr
+= count
;
1332 register char *p
= f
->_IO_write_ptr
;
1333 register int i
= (int) count
;
1336 f
->_IO_write_ptr
= p
;
1340 if (to_do
+ must_flush
> 0)
1342 _IO_size_t block_size
, do_write
;
1343 /* Next flush the (full) buffer. */
1344 if (_IO_OVERFLOW (f
, EOF
) == EOF
)
1347 /* Try to maintain alignment: write a whole number of blocks.
1348 dont_write is what gets left over. */
1349 block_size
= f
->_IO_buf_end
- f
->_IO_buf_base
;
1350 do_write
= to_do
- (block_size
>= 128 ? to_do
% block_size
: 0);
1354 count
= new_do_write (f
, s
, do_write
);
1356 if (count
< do_write
)
1360 /* Now write out the remainder. Normally, this will fit in the
1361 buffer, but it's somewhat messier for line-buffered files,
1362 so we let _IO_default_xsputn handle the general case. */
1364 to_do
-= INTUSE(_IO_default_xsputn
) (f
, s
+do_write
, to_do
);
1368 INTDEF2(_IO_new_file_xsputn
, _IO_file_xsputn
)
1371 _IO_file_xsgetn (fp
, data
, n
)
1376 register _IO_size_t want
, have
;
1377 register _IO_ssize_t count
;
1378 register char *s
= data
;
1382 if (fp
->_IO_buf_base
== NULL
)
1384 /* Maybe we already have a push back pointer. */
1385 if (fp
->_IO_save_base
!= NULL
)
1387 free (fp
->_IO_save_base
);
1388 fp
->_flags
&= ~_IO_IN_BACKUP
;
1390 INTUSE(_IO_doallocbuf
) (fp
);
1395 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1398 memcpy (s
, fp
->_IO_read_ptr
, want
);
1399 fp
->_IO_read_ptr
+= want
;
1407 s
= __mempcpy (s
, fp
->_IO_read_ptr
, have
);
1409 memcpy (s
, fp
->_IO_read_ptr
, have
);
1413 fp
->_IO_read_ptr
+= have
;
1416 /* Check for backup and repeat */
1417 if (_IO_in_backup (fp
))
1419 _IO_switch_to_main_get_area (fp
);
1423 /* If we now want less than a buffer, underflow and repeat
1424 the copy. Otherwise, _IO_SYSREAD directly to
1426 if (fp
->_IO_buf_base
&& want
< fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1428 if (__underflow (fp
) == EOF
)
1434 /* These must be set before the sysread as we might longjmp out
1435 waiting for input. */
1436 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1437 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1439 /* Try to maintain alignment: read a whole number of blocks. */
1441 if (fp
->_IO_buf_base
)
1443 _IO_size_t block_size
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1444 if (block_size
>= 128)
1445 count
-= want
% block_size
;
1448 count
= _IO_SYSREAD (fp
, s
, count
);
1452 fp
->_flags
|= _IO_EOF_SEEN
;
1454 fp
->_flags
|= _IO_ERR_SEEN
;
1461 if (fp
->_offset
!= _IO_pos_BAD
)
1462 _IO_pos_adjust (fp
->_offset
, count
);
1468 INTDEF(_IO_file_xsgetn
)
1470 static _IO_size_t _IO_file_xsgetn_mmap
__P ((_IO_FILE
*, void *, _IO_size_t
));
1472 _IO_file_xsgetn_mmap (fp
, data
, n
)
1477 register _IO_size_t have
;
1478 char *read_ptr
= fp
->_IO_read_ptr
;
1479 register char *s
= (char *) data
;
1481 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1485 if (__builtin_expect (_IO_in_backup (fp
), 0))
1488 s
= __mempcpy (s
, read_ptr
, have
);
1490 memcpy (s
, read_ptr
, have
);
1494 _IO_switch_to_main_get_area (fp
);
1495 read_ptr
= fp
->_IO_read_ptr
;
1496 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1501 /* Check that we are mapping all of the file, in case it grew. */
1502 if (__builtin_expect (mmap_remap_check (fp
), 0))
1503 /* We punted mmap, so complete with the vanilla code. */
1504 return s
- (char *) data
+ _IO_XSGETN (fp
, data
, n
);
1506 read_ptr
= fp
->_IO_read_ptr
;
1507 have
= fp
->_IO_read_end
- read_ptr
;
1512 fp
->_flags
|= _IO_EOF_SEEN
;
1516 have
= MIN (have
, n
);
1518 s
= __mempcpy (s
, read_ptr
, have
);
1520 memcpy (s
, read_ptr
, have
);
1523 fp
->_IO_read_ptr
= read_ptr
+ have
;
1526 return s
- (char *) data
;
1529 static _IO_size_t _IO_file_xsgetn_maybe_mmap
__P ((_IO_FILE
*, void *,
1532 _IO_file_xsgetn_maybe_mmap (fp
, data
, n
)
1537 /* We only get here if this is the first attempt to read something.
1538 Decide which operations to use and then punt to the chosen one. */
1540 decide_maybe_mmap (fp
);
1541 return _IO_XSGETN (fp
, data
, n
);
1544 struct _IO_jump_t _IO_file_jumps
=
1547 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1548 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1549 JUMP_INIT(underflow
, INTUSE(_IO_file_underflow
)),
1550 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1551 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1552 JUMP_INIT(xsputn
, INTUSE(_IO_file_xsputn
)),
1553 JUMP_INIT(xsgetn
, INTUSE(_IO_file_xsgetn
)),
1554 JUMP_INIT(seekoff
, _IO_new_file_seekoff
),
1555 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1556 JUMP_INIT(setbuf
, _IO_new_file_setbuf
),
1557 JUMP_INIT(sync
, _IO_new_file_sync
),
1558 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1559 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1560 JUMP_INIT(write
, _IO_new_file_write
),
1561 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1562 JUMP_INIT(close
, INTUSE(_IO_file_close
)),
1563 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1564 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1565 JUMP_INIT(imbue
, _IO_default_imbue
)
1567 INTVARDEF(_IO_file_jumps
)
1569 struct _IO_jump_t _IO_file_jumps_mmap
=
1572 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1573 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1574 JUMP_INIT(underflow
, _IO_file_underflow_mmap
),
1575 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1576 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1577 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1578 JUMP_INIT(xsgetn
, _IO_file_xsgetn_mmap
),
1579 JUMP_INIT(seekoff
, _IO_file_seekoff_mmap
),
1580 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1581 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1582 JUMP_INIT(sync
, _IO_file_sync_mmap
),
1583 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1584 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1585 JUMP_INIT(write
, _IO_new_file_write
),
1586 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1587 JUMP_INIT(close
, _IO_file_close_mmap
),
1588 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1589 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1590 JUMP_INIT(imbue
, _IO_default_imbue
)
1593 struct _IO_jump_t _IO_file_jumps_maybe_mmap
=
1596 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1597 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1598 JUMP_INIT(underflow
, _IO_file_underflow_maybe_mmap
),
1599 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1600 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1601 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1602 JUMP_INIT(xsgetn
, _IO_file_xsgetn_maybe_mmap
),
1603 JUMP_INIT(seekoff
, _IO_file_seekoff_maybe_mmap
),
1604 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1605 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1606 JUMP_INIT(sync
, _IO_new_file_sync
),
1607 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1608 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1609 JUMP_INIT(write
, _IO_new_file_write
),
1610 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1611 JUMP_INIT(close
, _IO_file_close
),
1612 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1613 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1614 JUMP_INIT(imbue
, _IO_default_imbue
)
1618 versioned_symbol (libc
, _IO_new_do_write
, _IO_do_write
, GLIBC_2_1
);
1619 versioned_symbol (libc
, _IO_new_file_attach
, _IO_file_attach
, GLIBC_2_1
);
1620 versioned_symbol (libc
, _IO_new_file_close_it
, _IO_file_close_it
, GLIBC_2_1
);
1621 versioned_symbol (libc
, _IO_new_file_finish
, _IO_file_finish
, GLIBC_2_1
);
1622 versioned_symbol (libc
, _IO_new_file_fopen
, _IO_file_fopen
, GLIBC_2_1
);
1623 versioned_symbol (libc
, _IO_new_file_init
, _IO_file_init
, GLIBC_2_1
);
1624 versioned_symbol (libc
, _IO_new_file_setbuf
, _IO_file_setbuf
, GLIBC_2_1
);
1625 versioned_symbol (libc
, _IO_new_file_sync
, _IO_file_sync
, GLIBC_2_1
);
1626 versioned_symbol (libc
, _IO_new_file_overflow
, _IO_file_overflow
, GLIBC_2_1
);
1627 versioned_symbol (libc
, _IO_new_file_seekoff
, _IO_file_seekoff
, GLIBC_2_1
);
1628 versioned_symbol (libc
, _IO_new_file_underflow
, _IO_file_underflow
, GLIBC_2_1
);
1629 versioned_symbol (libc
, _IO_new_file_write
, _IO_file_write
, GLIBC_2_1
);
1630 versioned_symbol (libc
, _IO_new_file_xsputn
, _IO_file_xsputn
, GLIBC_2_1
);