1 /* Copyright (C) 1993,1994,1997-1999,2000,2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 As a special exception, if you link the code in this file with
20 files compiled with a GNU compiler to produce an executable,
21 that does not cause the resulting executable to be covered by
22 the GNU Lesser General Public License. This exception does not
23 however invalidate any other reasons why the executable file
24 might be covered by the GNU Lesser General Public License.
25 This exception applies to code released by its copyright holders
26 in files containing the exception. */
35 # include <shlib-compat.h>
40 #define _IO_fcntl __fcntl
42 #define _IO_fcntl fcntl
47 _IO_new_fdopen (fd
, mode
)
55 struct _IO_FILE_plus fp
;
59 struct _IO_wide_data wd
;
66 read_write
= _IO_NO_WRITES
;
69 read_write
= _IO_NO_READS
;
72 posix_mode
= O_APPEND
;
73 read_write
= _IO_NO_READS
|_IO_IS_APPENDING
;
79 if (mode
[0] == '+' || (mode
[0] == 'b' && mode
[1] == '+'))
80 read_write
&= _IO_IS_APPENDING
;
82 fd_flags
= _IO_fcntl (fd
, F_GETFL
);
84 #define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
89 if (((fd_flags
& O_ACCMODE
) == O_RDONLY
&& !(read_write
& _IO_NO_WRITES
))
90 || ((fd_flags
& O_ACCMODE
) == O_WRONLY
&& !(read_write
& _IO_NO_READS
)))
96 /* The May 93 draft of P1003.4/D14.1 (redesignated as 1003.1b)
97 [System Application Program Interface (API) Amendment 1:
98 Realtime Extensions], Rationale B.8.3.3
99 Open a Stream on a File Descriptor says:
101 Although not explicitly required by POSIX.1, a good
102 implementation of append ("a") mode would cause the
103 O_APPEND flag to be set.
105 (Historical implementations [such as Solaris2] do a one-time
108 However, we do not turn O_APPEND off if the mode is "w" (even
109 though that would seem consistent) because that would be more
110 likely to break historical programs.
112 if ((posix_mode
& O_APPEND
) && !(fd_flags
& O_APPEND
))
115 if (_IO_fcntl (fd
, F_SETFL
, fd_flags
| O_APPEND
) == -1)
121 new_f
= (struct locked_FILE
*) malloc (sizeof (struct locked_FILE
));
125 new_f
->fp
.file
._lock
= &new_f
->lock
;
127 _IO_no_init (&new_f
->fp
.file
, 0, 0, &new_f
->wd
, &_IO_wfile_jumps
);
128 _IO_JUMPS (&new_f
->fp
) = &_IO_file_jumps
;
129 _IO_file_init (&new_f
->fp
);
130 #if !_IO_UNIFIED_JUMPTABLES
131 new_f
->fp
.vtable
= NULL
;
133 if (_IO_file_attach ((_IO_FILE
*) &new_f
->fp
, fd
) == NULL
)
135 _IO_un_link (&new_f
->fp
);
139 new_f
->fp
.file
._flags
&= ~_IO_DELETE_DONT_CLOSE
;
141 new_f
->fp
.file
._IO_file_flags
=
142 _IO_mask_flags (&new_f
->fp
.file
, read_write
,
143 _IO_NO_READS
+_IO_NO_WRITES
+_IO_IS_APPENDING
);
145 return __fopen_maybe_mmap (&new_f
->fp
.file
);
148 strong_alias (_IO_new_fdopen
, __new_fdopen
)
149 versioned_symbol (libc
, _IO_new_fdopen
, _IO_fdopen
, GLIBC_2_1
);
150 versioned_symbol (libc
, __new_fdopen
, fdopen
, GLIBC_2_1
);