1 | /* Copyright (C) 1993-2018 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
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. |
8 | |
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. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. |
17 | |
18 | As a special exception, if you link the code in this file with |
19 | files compiled with a GNU compiler to produce an executable, |
20 | that does not cause the resulting executable to be covered by |
21 | the GNU Lesser General Public License. This exception does not |
22 | however invalidate any other reasons why the executable file |
23 | might be covered by the GNU Lesser General Public License. |
24 | This exception applies to code released by its copyright holders |
25 | in files containing the exception. */ |
26 | |
27 | #include <stdio.h> |
28 | #include "libioP.h" |
29 | |
30 | typedef void *(*_IO_alloc_type) (size_t); |
31 | typedef void (*_IO_free_type) (void*); |
32 | |
33 | struct _IO_str_fields |
34 | { |
35 | /* These members are preserved for ABI compatibility. The glibc |
36 | implementation always calls malloc/free for user buffers if |
37 | _IO_USER_BUF or _IO_FLAGS2_USER_WBUF are not set. */ |
38 | _IO_alloc_type _allocate_buffer_unused; |
39 | _IO_free_type _free_buffer_unused; |
40 | }; |
41 | |
42 | /* This is needed for the Irix6 N32 ABI, which has a 64 bit off_t type, |
43 | but a 32 bit pointer type. In this case, we get 4 bytes of padding |
44 | after the vtable pointer. Putting them in a structure together solves |
45 | this problem. */ |
46 | |
47 | struct _IO_streambuf |
48 | { |
49 | FILE _f; |
50 | const struct _IO_jump_t *vtable; |
51 | }; |
52 | |
53 | typedef struct _IO_strfile_ |
54 | { |
55 | struct _IO_streambuf _sbf; |
56 | struct _IO_str_fields _s; |
57 | } _IO_strfile; |
58 | |
59 | /* frozen: set when the program has requested that the array object not |
60 | be altered, reallocated, or freed. */ |
61 | #define _IO_STR_FROZEN(FP) ((FP)->_f._flags & _IO_USER_BUF) |
62 | |
63 | typedef struct |
64 | { |
65 | _IO_strfile f; |
66 | /* This is used for the characters which do not fit in the buffer |
67 | provided by the user. */ |
68 | char overflow_buf[64]; |
69 | } _IO_strnfile; |
70 | |
71 | extern const struct _IO_jump_t _IO_strn_jumps attribute_hidden; |
72 | |
73 | |
74 | typedef struct |
75 | { |
76 | _IO_strfile f; |
77 | /* This is used for the characters which do not fit in the buffer |
78 | provided by the user. */ |
79 | wchar_t overflow_buf[64]; |
80 | } _IO_wstrnfile; |
81 | |
82 | extern const struct _IO_jump_t _IO_wstrn_jumps attribute_hidden; |
83 | |