1 /* Copyright (C) 1993,94,97,99,2000,2002,2003,2004,2012
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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, see
17 <http://www.gnu.org/licenses/>.
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. */
28 #include <shlib-compat.h>
29 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
31 #define _IO_USE_OLD_IO_FILE
37 # define _IO_fcntl __fcntl
41 attribute_compat_text_section
42 _IO_old_fdopen (fd, mode)
50 struct _IO_FILE_complete_plus fp;
60 read_write = _IO_NO_WRITES;
63 read_write = _IO_NO_READS;
66 posix_mode = O_APPEND;
67 read_write = _IO_NO_READS|_IO_IS_APPENDING;
73 if (mode[0] == '+' || (mode[0] == 'b' && mode[1] == '+'))
74 read_write &= _IO_IS_APPENDING;
76 fd_flags = _IO_fcntl (fd, F_GETFL);
78 #define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
81 || ((fd_flags & O_ACCMODE) == O_RDONLY && !(read_write & _IO_NO_WRITES))
82 || ((fd_flags & O_ACCMODE) == O_WRONLY && !(read_write & _IO_NO_READS)))
85 /* The May 93 draft of P1003.4/D14.1 (redesignated as 1003.1b)
86 [System Application Program Interface (API) Amendment 1:
87 Realtime Extensions], Rationale B.8.3.3
88 Open a Stream on a File Descriptor says:
90 Although not explicitly required by POSIX.1, a good
91 implementation of append ("a") mode would cause the
92 O_APPEND flag to be set.
94 (Historical implementations [such as Solaris2] do a one-time
97 However, we do not turn O_APPEND off if the mode is "w" (even
98 though that would seem consistent) because that would be more
99 likely to break historical programs.
101 if ((posix_mode & O_APPEND) && !(fd_flags & O_APPEND))
104 if (_IO_fcntl (fd, F_SETFL, fd_flags | O_APPEND) == -1)
110 new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE));
114 new_f->fp.file._file._lock = &new_f->lock;
116 _IO_old_init (&new_f->fp.file._file, 0);
117 _IO_JUMPS ((struct _IO_FILE_plus *) &new_f->fp) = &_IO_old_file_jumps;
118 _IO_old_file_init ((struct _IO_FILE_plus *) &new_f->fp);
119 #if !_IO_UNIFIED_JUMPTABLES
120 new_f->fp.vtable = NULL;
122 if (_IO_old_file_attach (&new_f->fp.file._file, fd) == NULL)
124 INTUSE(_IO_un_link) ((struct _IO_FILE_plus *) &new_f->fp);
128 new_f->fp.file._file._flags &= ~_IO_DELETE_DONT_CLOSE;
130 _IO_mask_flags (&new_f->fp.file._file, read_write,
131 _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING);
133 return (_IO_FILE *) &new_f->fp;
136 strong_alias (_IO_old_fdopen, __old_fdopen)
137 compat_symbol (libc, _IO_old_fdopen, _IO_fdopen, GLIBC_2_0);
138 compat_symbol (libc, __old_fdopen, fdopen, GLIBC_2_0);