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b168057a | 1 | /* Copyright (C) 1993-2015 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
40a55d20 | 3 | |
41bdb6e2 AJ |
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. | |
40a55d20 | 8 | |
41bdb6e2 AJ |
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 | |
40a55d20 | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 AJ |
12 | Lesser General Public License for more details. |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. | |
41bdb6e2 AJ |
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. */ | |
96aa2d94 | 26 | |
b1848fde SP |
27 | /* NOTE: libio is now exclusively used only by glibc since libstdc++ has its |
28 | own implementation. As a result, functions that were implemented for C++ | |
29 | (like *sputn) may no longer have C++ semantics. This is of course only | |
30 | relevant for internal callers of these functions since these functions are | |
31 | not intended for external use otherwise. | |
32 | ||
33 | FIXME: All of the C++ cruft eventually needs to go away. */ | |
34 | ||
e69dcccb FW |
35 | #include <stddef.h> |
36 | ||
96aa2d94 | 37 | #include <errno.h> |
a2b08ee5 UD |
38 | #ifndef __set_errno |
39 | # define __set_errno(Val) errno = (Val) | |
40 | #endif | |
41 | #if defined __GLIBC__ && __GLIBC__ >= 2 | |
ec999b8e | 42 | # include <libc-lock.h> |
a2b08ee5 UD |
43 | #else |
44 | /*# include <comthread.h>*/ | |
45 | #endif | |
96aa2d94 | 46 | |
c6251f03 RM |
47 | #include <math_ldbl_opt.h> |
48 | ||
96aa2d94 RM |
49 | #include "iolibio.h" |
50 | ||
77fe0b9c UD |
51 | /* Control of exported symbols. Used in glibc. By default we don't |
52 | do anything. */ | |
37ba7d66 UD |
53 | #ifndef libc_hidden_proto |
54 | # define libc_hidden_proto(name) | |
55 | #endif | |
56 | #ifndef libc_hidden_def | |
57 | # define libc_hidden_def(name) | |
58 | #endif | |
59 | #ifndef libc_hidden_weak | |
60 | # define libc_hidden_weak(name) | |
61 | #endif | |
62 | ||
4547c1a4 UD |
63 | #ifdef __cplusplus |
64 | extern "C" { | |
65 | #endif | |
96aa2d94 RM |
66 | |
67 | #define _IO_seek_set 0 | |
68 | #define _IO_seek_cur 1 | |
69 | #define _IO_seek_end 2 | |
70 | ||
f65fd747 UD |
71 | /* THE JUMPTABLE FUNCTIONS. |
72 | ||
73 | * The _IO_FILE type is used to implement the FILE type in GNU libc, | |
74 | * as well as the streambuf class in GNU iostreams for C++. | |
75 | * These are all the same, just used differently. | |
76 | * An _IO_FILE (or FILE) object is allows followed by a pointer to | |
77 | * a jump table (of pointers to functions). The pointer is accessed | |
c0c3f78a | 78 | * with the _IO_JUMPS macro. The jump table has an eccentric format, |
f65fd747 | 79 | * so as to be compatible with the layout of a C++ virtual function table. |
6d52618b | 80 | * (as implemented by g++). When a pointer to a streambuf object is |
f65fd747 UD |
81 | * coerced to an (_IO_FILE*), then _IO_JUMPS on the result just |
82 | * happens to point to the virtual function table of the streambuf. | |
83 | * Thus the _IO_JUMPS function table used for C stdio/libio does | |
6d52618b | 84 | * double duty as the virtual function table for C++ streambuf. |
f65fd747 UD |
85 | * |
86 | * The entries in the _IO_JUMPS function table (and hence also the | |
87 | * virtual functions of a streambuf) are described below. | |
88 | * The first parameter of each function entry is the _IO_FILE/streambuf | |
89 | * object being acted on (i.e. the 'this' parameter). | |
90 | */ | |
96aa2d94 | 91 | |
00404a96 RM |
92 | #ifdef _LIBC |
93 | # include <shlib-compat.h> | |
94 | # if !SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) | |
95 | /* Setting this macro disables the use of the _vtable_offset | |
96 | bias in _IO_JUMPS_FUNCS, below. That is only needed if we | |
97 | want to support old binaries (see oldfileops.c). */ | |
98 | # define _G_IO_NO_BACKWARD_COMPAT 1 | |
99 | # endif | |
100 | #endif | |
101 | ||
bd355af0 UD |
102 | #if (!defined _IO_USE_OLD_IO_FILE \ |
103 | && (!defined _G_IO_NO_BACKWARD_COMPAT || _G_IO_NO_BACKWARD_COMPAT == 0)) | |
104 | # define _IO_JUMPS_OFFSET 1 | |
8f2f08d0 RM |
105 | #else |
106 | # define _IO_JUMPS_OFFSET 0 | |
bd355af0 UD |
107 | #endif |
108 | ||
e69dcccb FW |
109 | /* Type of MEMBER in struct type TYPE. */ |
110 | #define _IO_MEMBER_TYPE(TYPE, MEMBER) __typeof__ (((TYPE){}).MEMBER) | |
111 | ||
112 | /* Essentially ((TYPE *) THIS)->MEMBER, but avoiding the aliasing | |
113 | violation in case THIS has a different pointer type. */ | |
114 | #define _IO_CAST_FIELD_ACCESS(THIS, TYPE, MEMBER) \ | |
115 | (*(_IO_MEMBER_TYPE (TYPE, MEMBER) *)(((char *) (THIS)) \ | |
7348824c | 116 | + offsetof(TYPE, MEMBER))) |
e69dcccb | 117 | |
2ca8b1ee | 118 | #define _IO_JUMPS(THIS) (THIS)->vtable |
e69dcccb FW |
119 | #define _IO_JUMPS_FILE_plus(THIS) \ |
120 | _IO_CAST_FIELD_ACCESS ((THIS), struct _IO_FILE_plus, vtable) | |
121 | #define _IO_WIDE_JUMPS(THIS) \ | |
122 | _IO_CAST_FIELD_ACCESS ((THIS), struct _IO_FILE, _wide_data)->_wide_vtable | |
123 | #define _IO_CHECK_WIDE(THIS) \ | |
124 | (_IO_CAST_FIELD_ACCESS ((THIS), struct _IO_FILE, _wide_data) != NULL) | |
7163e69e | 125 | |
c15cf13a | 126 | #if _IO_JUMPS_OFFSET |
bd355af0 | 127 | # define _IO_JUMPS_FUNC(THIS) \ |
e69dcccb | 128 | (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS_FILE_plus (THIS) \ |
bd355af0 | 129 | + (THIS)->_vtable_offset)) |
bbdef797 | 130 | # define _IO_vtable_offset(THIS) (THIS)->_vtable_offset |
bd355af0 | 131 | #else |
e69dcccb | 132 | # define _IO_JUMPS_FUNC(THIS) _IO_JUMPS_FILE_plus (THIS) |
bbdef797 | 133 | # define _IO_vtable_offset(THIS) 0 |
bd355af0 | 134 | #endif |
6e06ae59 | 135 | #define _IO_WIDE_JUMPS_FUNC(THIS) _IO_WIDE_JUMPS(THIS) |
28361c5e JM |
136 | #define JUMP_FIELD(TYPE, NAME) TYPE NAME |
137 | #define JUMP0(FUNC, THIS) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS) | |
138 | #define JUMP1(FUNC, THIS, X1) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1) | |
139 | #define JUMP2(FUNC, THIS, X1, X2) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2) | |
140 | #define JUMP3(FUNC, THIS, X1,X2,X3) (_IO_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3) | |
141 | #define JUMP_INIT(NAME, VALUE) VALUE | |
142 | #define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT (dummy2, 0) | |
143 | ||
144 | #define WJUMP0(FUNC, THIS) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS) | |
145 | #define WJUMP1(FUNC, THIS, X1) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1) | |
146 | #define WJUMP2(FUNC, THIS, X1, X2) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1, X2) | |
147 | #define WJUMP3(FUNC, THIS, X1,X2,X3) (_IO_WIDE_JUMPS_FUNC(THIS)->FUNC) (THIS, X1,X2, X3) | |
96aa2d94 | 148 | |
f65fd747 | 149 | /* The 'finish' function does any final cleaning up of an _IO_FILE object. |
110215a9 | 150 | It does not delete (free) it, but does everything else to finalize it. |
f65fd747 | 151 | It matches the streambuf::~streambuf virtual destructor. */ |
79937577 | 152 | typedef void (*_IO_finish_t) (_IO_FILE *, int); /* finalize */ |
40a55d20 | 153 | #define _IO_FINISH(FP) JUMP1 (__finish, FP, 0) |
6e06ae59 | 154 | #define _IO_WFINISH(FP) WJUMP1 (__finish, FP, 0) |
f65fd747 UD |
155 | |
156 | /* The 'overflow' hook flushes the buffer. | |
157 | The second argument is a character, or EOF. | |
158 | It matches the streambuf::overflow virtual function. */ | |
79937577 | 159 | typedef int (*_IO_overflow_t) (_IO_FILE *, int); |
40a55d20 | 160 | #define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH) |
6e06ae59 | 161 | #define _IO_WOVERFLOW(FP, CH) WJUMP1 (__overflow, FP, CH) |
f65fd747 UD |
162 | |
163 | /* The 'underflow' hook tries to fills the get buffer. | |
164 | It returns the next character (as an unsigned char) or EOF. The next | |
6d52618b | 165 | character remains in the get buffer, and the get position is not changed. |
f65fd747 | 166 | It matches the streambuf::underflow virtual function. */ |
79937577 | 167 | typedef int (*_IO_underflow_t) (_IO_FILE *); |
40a55d20 | 168 | #define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP) |
6e06ae59 | 169 | #define _IO_WUNDERFLOW(FP) WJUMP0 (__underflow, FP) |
f65fd747 UD |
170 | |
171 | /* The 'uflow' hook returns the next character in the input stream | |
172 | (cast to unsigned char), and increments the read position; | |
173 | EOF is returned on failure. | |
174 | It matches the streambuf::uflow virtual function, which is not in the | |
175 | cfront implementation, but was added to C++ by the ANSI/ISO committee. */ | |
40a55d20 | 176 | #define _IO_UFLOW(FP) JUMP0 (__uflow, FP) |
6e06ae59 | 177 | #define _IO_WUFLOW(FP) WJUMP0 (__uflow, FP) |
f65fd747 UD |
178 | |
179 | /* The 'pbackfail' hook handles backing up. | |
180 | It matches the streambuf::pbackfail virtual function. */ | |
79937577 | 181 | typedef int (*_IO_pbackfail_t) (_IO_FILE *, int); |
40a55d20 | 182 | #define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH) |
6e06ae59 | 183 | #define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH) |
f65fd747 UD |
184 | |
185 | /* The 'xsputn' hook writes upto N characters from buffer DATA. | |
2b766585 | 186 | Returns EOF or the number of character actually written. |
f65fd747 | 187 | It matches the streambuf::xsputn virtual function. */ |
79937577 UD |
188 | typedef _IO_size_t (*_IO_xsputn_t) (_IO_FILE *FP, const void *DATA, |
189 | _IO_size_t N); | |
40a55d20 | 190 | #define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N) |
6e06ae59 | 191 | #define _IO_WXSPUTN(FP, DATA, N) WJUMP2 (__xsputn, FP, DATA, N) |
f65fd747 UD |
192 | |
193 | /* The 'xsgetn' hook reads upto N characters into buffer DATA. | |
194 | Returns the number of character actually read. | |
195 | It matches the streambuf::xsgetn virtual function. */ | |
79937577 | 196 | typedef _IO_size_t (*_IO_xsgetn_t) (_IO_FILE *FP, void *DATA, _IO_size_t N); |
40a55d20 | 197 | #define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N) |
6e06ae59 | 198 | #define _IO_WXSGETN(FP, DATA, N) WJUMP2 (__xsgetn, FP, DATA, N) |
f65fd747 UD |
199 | |
200 | /* The 'seekoff' hook moves the stream position to a new position | |
201 | relative to the start of the file (if DIR==0), the current position | |
202 | (MODE==1), or the end of the file (MODE==2). | |
203 | It matches the streambuf::seekoff virtual function. | |
204 | It is also used for the ANSI fseek function. */ | |
79937577 UD |
205 | typedef _IO_off64_t (*_IO_seekoff_t) (_IO_FILE *FP, _IO_off64_t OFF, int DIR, |
206 | int MODE); | |
40a55d20 | 207 | #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE) |
6e06ae59 | 208 | #define _IO_WSEEKOFF(FP, OFF, DIR, MODE) WJUMP3 (__seekoff, FP, OFF, DIR, MODE) |
f65fd747 UD |
209 | |
210 | /* The 'seekpos' hook also moves the stream position, | |
dfd2257a | 211 | but to an absolute position given by a fpos64_t (seekpos). |
f65fd747 UD |
212 | It matches the streambuf::seekpos virtual function. |
213 | It is also used for the ANSI fgetpos and fsetpos functions. */ | |
214 | /* The _IO_seek_cur and _IO_seek_end options are not allowed. */ | |
79937577 | 215 | typedef _IO_off64_t (*_IO_seekpos_t) (_IO_FILE *, _IO_off64_t, int); |
40a55d20 | 216 | #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS) |
6e06ae59 | 217 | #define _IO_WSEEKPOS(FP, POS, FLAGS) WJUMP2 (__seekpos, FP, POS, FLAGS) |
f65fd747 UD |
218 | |
219 | /* The 'setbuf' hook gives a buffer to the file. | |
220 | It matches the streambuf::setbuf virtual function. */ | |
79937577 | 221 | typedef _IO_FILE* (*_IO_setbuf_t) (_IO_FILE *, char *, _IO_ssize_t); |
40a55d20 | 222 | #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH) |
6e06ae59 | 223 | #define _IO_WSETBUF(FP, BUFFER, LENGTH) WJUMP2 (__setbuf, FP, BUFFER, LENGTH) |
f65fd747 UD |
224 | |
225 | /* The 'sync' hook attempts to synchronize the internal data structures | |
226 | of the file with the external state. | |
227 | It matches the streambuf::sync virtual function. */ | |
79937577 | 228 | typedef int (*_IO_sync_t) (_IO_FILE *); |
40a55d20 | 229 | #define _IO_SYNC(FP) JUMP0 (__sync, FP) |
6e06ae59 | 230 | #define _IO_WSYNC(FP) WJUMP0 (__sync, FP) |
f65fd747 UD |
231 | |
232 | /* The 'doallocate' hook is used to tell the file to allocate a buffer. | |
233 | It matches the streambuf::doallocate virtual function, which is not | |
234 | in the ANSI/ISO C++ standard, but is part traditional implementations. */ | |
79937577 | 235 | typedef int (*_IO_doallocate_t) (_IO_FILE *); |
40a55d20 | 236 | #define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP) |
6e06ae59 | 237 | #define _IO_WDOALLOCATE(FP) WJUMP0 (__doallocate, FP) |
f65fd747 UD |
238 | |
239 | /* The following four hooks (sysread, syswrite, sysclose, sysseek, and | |
240 | sysstat) are low-level hooks specific to this implementation. | |
6d52618b | 241 | There is no correspondence in the ANSI/ISO C++ standard library. |
f65fd747 UD |
242 | The hooks basically correspond to the Unix system functions |
243 | (read, write, close, lseek, and stat) except that a _IO_FILE* | |
c0c3f78a | 244 | parameter is used instead of an integer file descriptor; the default |
f65fd747 UD |
245 | implementation used for normal files just calls those functions. |
246 | The advantage of overriding these functions instead of the higher-level | |
247 | ones (underflow, overflow etc) is that you can leave all the buffering | |
248 | higher-level functions. */ | |
249 | ||
250 | /* The 'sysread' hook is used to read data from the external file into | |
251 | an existing buffer. It generalizes the Unix read(2) function. | |
252 | It matches the streambuf::sys_read virtual function, which is | |
6d52618b | 253 | specific to this implementation. */ |
79937577 | 254 | typedef _IO_ssize_t (*_IO_read_t) (_IO_FILE *, void *, _IO_ssize_t); |
40a55d20 | 255 | #define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN) |
6e06ae59 | 256 | #define _IO_WSYSREAD(FP, DATA, LEN) WJUMP2 (__read, FP, DATA, LEN) |
f65fd747 UD |
257 | |
258 | /* The 'syswrite' hook is used to write data from an existing buffer | |
259 | to an external file. It generalizes the Unix write(2) function. | |
260 | It matches the streambuf::sys_write virtual function, which is | |
6d52618b | 261 | specific to this implementation. */ |
79937577 | 262 | typedef _IO_ssize_t (*_IO_write_t) (_IO_FILE *, const void *, _IO_ssize_t); |
40a55d20 | 263 | #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN) |
6e06ae59 | 264 | #define _IO_WSYSWRITE(FP, DATA, LEN) WJUMP2 (__write, FP, DATA, LEN) |
f65fd747 UD |
265 | |
266 | /* The 'sysseek' hook is used to re-position an external file. | |
267 | It generalizes the Unix lseek(2) function. | |
268 | It matches the streambuf::sys_seek virtual function, which is | |
6d52618b | 269 | specific to this implementation. */ |
79937577 | 270 | typedef _IO_off64_t (*_IO_seek_t) (_IO_FILE *, _IO_off64_t, int); |
40a55d20 | 271 | #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE) |
6e06ae59 | 272 | #define _IO_WSYSSEEK(FP, OFFSET, MODE) WJUMP2 (__seek, FP, OFFSET, MODE) |
f65fd747 UD |
273 | |
274 | /* The 'sysclose' hook is used to finalize (close, finish up) an | |
275 | external file. It generalizes the Unix close(2) function. | |
276 | It matches the streambuf::sys_close virtual function, which is | |
277 | specific to this implementation. */ | |
79937577 | 278 | typedef int (*_IO_close_t) (_IO_FILE *); /* finalize */ |
40a55d20 | 279 | #define _IO_SYSCLOSE(FP) JUMP0 (__close, FP) |
6e06ae59 | 280 | #define _IO_WSYSCLOSE(FP) WJUMP0 (__close, FP) |
f65fd747 UD |
281 | |
282 | /* The 'sysstat' hook is used to get information about an external file | |
283 | into a struct stat buffer. It generalizes the Unix fstat(2) call. | |
284 | It matches the streambuf::sys_stat virtual function, which is | |
6d52618b | 285 | specific to this implementation. */ |
79937577 | 286 | typedef int (*_IO_stat_t) (_IO_FILE *, void *); |
40a55d20 | 287 | #define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF) |
6e06ae59 | 288 | #define _IO_WSYSSTAT(FP, BUF) WJUMP1 (__stat, FP, BUF) |
96aa2d94 | 289 | |
dfd2257a UD |
290 | /* The 'showmany' hook can be used to get an image how much input is |
291 | available. In many cases the answer will be 0 which means unknown | |
292 | but some cases one can provide real information. */ | |
79937577 | 293 | typedef int (*_IO_showmanyc_t) (_IO_FILE *); |
dfd2257a | 294 | #define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP) |
6e06ae59 | 295 | #define _IO_WSHOWMANYC(FP) WJUMP0 (__showmanyc, FP) |
dfd2257a UD |
296 | |
297 | /* The 'imbue' hook is used to get information about the currently | |
298 | installed locales. */ | |
79937577 | 299 | typedef void (*_IO_imbue_t) (_IO_FILE *, void *); |
dfd2257a | 300 | #define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE) |
6e06ae59 | 301 | #define _IO_WIMBUE(FP, LOCALE) WJUMP1 (__imbue, FP, LOCALE) |
dfd2257a | 302 | |
f65fd747 | 303 | |
96aa2d94 RM |
304 | #define _IO_CHAR_TYPE char /* unsigned char ? */ |
305 | #define _IO_INT_TYPE int | |
306 | ||
40a55d20 UD |
307 | struct _IO_jump_t |
308 | { | |
203e5603 JM |
309 | JUMP_FIELD(size_t, __dummy); |
310 | JUMP_FIELD(size_t, __dummy2); | |
96aa2d94 RM |
311 | JUMP_FIELD(_IO_finish_t, __finish); |
312 | JUMP_FIELD(_IO_overflow_t, __overflow); | |
313 | JUMP_FIELD(_IO_underflow_t, __underflow); | |
314 | JUMP_FIELD(_IO_underflow_t, __uflow); | |
315 | JUMP_FIELD(_IO_pbackfail_t, __pbackfail); | |
316 | /* showmany */ | |
317 | JUMP_FIELD(_IO_xsputn_t, __xsputn); | |
318 | JUMP_FIELD(_IO_xsgetn_t, __xsgetn); | |
319 | JUMP_FIELD(_IO_seekoff_t, __seekoff); | |
320 | JUMP_FIELD(_IO_seekpos_t, __seekpos); | |
321 | JUMP_FIELD(_IO_setbuf_t, __setbuf); | |
322 | JUMP_FIELD(_IO_sync_t, __sync); | |
323 | JUMP_FIELD(_IO_doallocate_t, __doallocate); | |
324 | JUMP_FIELD(_IO_read_t, __read); | |
325 | JUMP_FIELD(_IO_write_t, __write); | |
326 | JUMP_FIELD(_IO_seek_t, __seek); | |
327 | JUMP_FIELD(_IO_close_t, __close); | |
328 | JUMP_FIELD(_IO_stat_t, __stat); | |
dfd2257a UD |
329 | JUMP_FIELD(_IO_showmanyc_t, __showmanyc); |
330 | JUMP_FIELD(_IO_imbue_t, __imbue); | |
96aa2d94 RM |
331 | #if 0 |
332 | get_column; | |
333 | set_column; | |
334 | #endif | |
335 | }; | |
336 | ||
337 | /* We always allocate an extra word following an _IO_FILE. | |
f65fd747 | 338 | This contains a pointer to the function jump table used. |
96aa2d94 RM |
339 | This is for compatibility with C++ streambuf; the word can |
340 | be used to smash to a pointer to a virtual function table. */ | |
341 | ||
40a55d20 UD |
342 | struct _IO_FILE_plus |
343 | { | |
96aa2d94 | 344 | _IO_FILE file; |
96aa2d94 | 345 | const struct _IO_jump_t *vtable; |
96aa2d94 RM |
346 | }; |
347 | ||
7ea11363 UD |
348 | #ifdef _IO_USE_OLD_IO_FILE |
349 | /* This structure is used by the compatibility code as if it were an | |
350 | _IO_FILE_plus, but has enough space to initialize the _mode argument | |
351 | of an _IO_FILE_complete. */ | |
352 | struct _IO_FILE_complete_plus | |
353 | { | |
354 | struct _IO_FILE_complete file; | |
355 | const struct _IO_jump_t *vtable; | |
356 | }; | |
357 | #endif | |
358 | ||
2ca8b1ee GM |
359 | /* Special file type for fopencookie function. */ |
360 | struct _IO_cookie_file | |
361 | { | |
362 | struct _IO_FILE_plus __fp; | |
363 | void *__cookie; | |
364 | _IO_cookie_io_functions_t __io_functions; | |
365 | }; | |
366 | ||
c9fc9559 RM |
367 | _IO_FILE *_IO_fopencookie (void *cookie, const char *mode, |
368 | _IO_cookie_io_functions_t io_functions); | |
369 | ||
370 | ||
3fc9ca4e UD |
371 | /* Iterator type for walking global linked list of _IO_FILE objects. */ |
372 | ||
73c115ed | 373 | typedef struct _IO_FILE *_IO_ITER; |
3fc9ca4e | 374 | |
96aa2d94 RM |
375 | /* Generic functions */ |
376 | ||
79937577 UD |
377 | extern void _IO_switch_to_main_get_area (_IO_FILE *) __THROW; |
378 | extern void _IO_switch_to_backup_area (_IO_FILE *) __THROW; | |
0fca3153 | 379 | extern int _IO_switch_to_get_mode (_IO_FILE *); |
d18ea0c5 | 380 | libc_hidden_proto (_IO_switch_to_get_mode) |
79937577 | 381 | extern void _IO_init (_IO_FILE *, int) __THROW; |
d18ea0c5 | 382 | libc_hidden_proto (_IO_init) |
79937577 | 383 | extern int _IO_sputbackc (_IO_FILE *, int) __THROW; |
d18ea0c5 | 384 | libc_hidden_proto (_IO_sputbackc) |
79937577 UD |
385 | extern int _IO_sungetc (_IO_FILE *) __THROW; |
386 | extern void _IO_un_link (struct _IO_FILE_plus *) __THROW; | |
d18ea0c5 | 387 | libc_hidden_proto (_IO_un_link) |
79937577 | 388 | extern void _IO_link_in (struct _IO_FILE_plus *) __THROW; |
d18ea0c5 | 389 | libc_hidden_proto (_IO_link_in) |
79937577 | 390 | extern void _IO_doallocbuf (_IO_FILE *) __THROW; |
d18ea0c5 | 391 | libc_hidden_proto (_IO_doallocbuf) |
79937577 | 392 | extern void _IO_unsave_markers (_IO_FILE *) __THROW; |
d18ea0c5 | 393 | libc_hidden_proto (_IO_unsave_markers) |
79937577 | 394 | extern void _IO_setb (_IO_FILE *, char *, char *, int) __THROW; |
d18ea0c5 | 395 | libc_hidden_proto (_IO_setb) |
79937577 | 396 | extern unsigned _IO_adjust_column (unsigned, const char *, int) __THROW; |
d18ea0c5 | 397 | libc_hidden_proto (_IO_adjust_column) |
40a55d20 | 398 | #define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n) |
96aa2d94 | 399 | |
d18ea0c5 AS |
400 | _IO_ssize_t _IO_least_wmarker (_IO_FILE *, wchar_t *) __THROW; |
401 | libc_hidden_proto (_IO_least_wmarker) | |
79937577 | 402 | extern void _IO_switch_to_main_wget_area (_IO_FILE *) __THROW; |
d18ea0c5 | 403 | libc_hidden_proto (_IO_switch_to_main_wget_area) |
79937577 | 404 | extern void _IO_switch_to_wbackup_area (_IO_FILE *) __THROW; |
d18ea0c5 | 405 | libc_hidden_proto (_IO_switch_to_wbackup_area) |
0fca3153 | 406 | extern int _IO_switch_to_wget_mode (_IO_FILE *); |
d18ea0c5 | 407 | libc_hidden_proto (_IO_switch_to_wget_mode) |
79937577 | 408 | extern void _IO_wsetb (_IO_FILE *, wchar_t *, wchar_t *, int) __THROW; |
d18ea0c5 | 409 | libc_hidden_proto (_IO_wsetb) |
79937577 | 410 | extern wint_t _IO_sputbackwc (_IO_FILE *, wint_t) __THROW; |
d18ea0c5 | 411 | libc_hidden_proto (_IO_sputbackwc) |
79937577 UD |
412 | extern wint_t _IO_sungetwc (_IO_FILE *) __THROW; |
413 | extern void _IO_wdoallocbuf (_IO_FILE *) __THROW; | |
d18ea0c5 | 414 | libc_hidden_proto (_IO_wdoallocbuf) |
79937577 UD |
415 | extern void _IO_unsave_wmarkers (_IO_FILE *) __THROW; |
416 | extern unsigned _IO_adjust_wcolumn (unsigned, const wchar_t *, int) __THROW; | |
000232b9 | 417 | extern _IO_off64_t get_file_offset (_IO_FILE *fp); |
d64b6ad0 | 418 | |
96aa2d94 RM |
419 | /* Marker-related function. */ |
420 | ||
0fca3153 UD |
421 | extern void _IO_init_marker (struct _IO_marker *, _IO_FILE *); |
422 | extern void _IO_init_wmarker (struct _IO_marker *, _IO_FILE *); | |
79937577 UD |
423 | extern void _IO_remove_marker (struct _IO_marker *) __THROW; |
424 | extern int _IO_marker_difference (struct _IO_marker *, struct _IO_marker *) | |
425 | __THROW; | |
426 | extern int _IO_marker_delta (struct _IO_marker *) __THROW; | |
427 | extern int _IO_wmarker_delta (struct _IO_marker *) __THROW; | |
428 | extern int _IO_seekmark (_IO_FILE *, struct _IO_marker *, int) __THROW; | |
429 | extern int _IO_seekwmark (_IO_FILE *, struct _IO_marker *, int) __THROW; | |
96aa2d94 | 430 | |
79937577 | 431 | /* Functions for iterating global list and dealing with its lock */ |
3fc9ca4e | 432 | |
79937577 | 433 | extern _IO_ITER _IO_iter_begin (void) __THROW; |
1d2b6e0c | 434 | libc_hidden_proto (_IO_iter_begin) |
79937577 | 435 | extern _IO_ITER _IO_iter_end (void) __THROW; |
1d2b6e0c | 436 | libc_hidden_proto (_IO_iter_end) |
79937577 | 437 | extern _IO_ITER _IO_iter_next (_IO_ITER) __THROW; |
1d2b6e0c | 438 | libc_hidden_proto (_IO_iter_next) |
79937577 | 439 | extern _IO_FILE *_IO_iter_file (_IO_ITER) __THROW; |
1d2b6e0c | 440 | libc_hidden_proto (_IO_iter_file) |
79937577 | 441 | extern void _IO_list_lock (void) __THROW; |
245eab02 | 442 | libc_hidden_proto (_IO_list_lock) |
79937577 | 443 | extern void _IO_list_unlock (void) __THROW; |
245eab02 | 444 | libc_hidden_proto (_IO_list_unlock) |
79937577 | 445 | extern void _IO_list_resetlock (void) __THROW; |
245eab02 | 446 | libc_hidden_proto (_IO_list_resetlock) |
3fc9ca4e | 447 | |
96aa2d94 RM |
448 | /* Default jumptable functions. */ |
449 | ||
79937577 | 450 | extern int _IO_default_underflow (_IO_FILE *) __THROW; |
0fca3153 | 451 | extern int _IO_default_uflow (_IO_FILE *); |
d18ea0c5 | 452 | libc_hidden_proto (_IO_default_uflow) |
0fca3153 | 453 | extern wint_t _IO_wdefault_uflow (_IO_FILE *); |
d18ea0c5 | 454 | libc_hidden_proto (_IO_wdefault_uflow) |
79937577 | 455 | extern int _IO_default_doallocate (_IO_FILE *) __THROW; |
d18ea0c5 | 456 | libc_hidden_proto (_IO_default_doallocate) |
79937577 | 457 | extern int _IO_wdefault_doallocate (_IO_FILE *) __THROW; |
d18ea0c5 | 458 | libc_hidden_proto (_IO_wdefault_doallocate) |
79937577 | 459 | extern void _IO_default_finish (_IO_FILE *, int) __THROW; |
d18ea0c5 | 460 | libc_hidden_proto (_IO_default_finish) |
79937577 | 461 | extern void _IO_wdefault_finish (_IO_FILE *, int) __THROW; |
d18ea0c5 | 462 | libc_hidden_proto (_IO_wdefault_finish) |
79937577 | 463 | extern int _IO_default_pbackfail (_IO_FILE *, int) __THROW; |
d18ea0c5 | 464 | libc_hidden_proto (_IO_default_pbackfail) |
79937577 | 465 | extern wint_t _IO_wdefault_pbackfail (_IO_FILE *, wint_t) __THROW; |
d18ea0c5 | 466 | libc_hidden_proto (_IO_wdefault_pbackfail) |
0fca3153 | 467 | extern _IO_FILE* _IO_default_setbuf (_IO_FILE *, char *, _IO_ssize_t); |
102070bc | 468 | extern _IO_size_t _IO_default_xsputn (_IO_FILE *, const void *, _IO_size_t); |
d18ea0c5 | 469 | libc_hidden_proto (_IO_default_xsputn) |
102070bc | 470 | extern _IO_size_t _IO_wdefault_xsputn (_IO_FILE *, const void *, _IO_size_t); |
d18ea0c5 | 471 | libc_hidden_proto (_IO_wdefault_xsputn) |
102070bc | 472 | extern _IO_size_t _IO_default_xsgetn (_IO_FILE *, void *, _IO_size_t); |
d18ea0c5 | 473 | libc_hidden_proto (_IO_default_xsgetn) |
102070bc | 474 | extern _IO_size_t _IO_wdefault_xsgetn (_IO_FILE *, void *, _IO_size_t); |
d18ea0c5 | 475 | libc_hidden_proto (_IO_wdefault_xsgetn) |
79937577 UD |
476 | extern _IO_off64_t _IO_default_seekoff (_IO_FILE *, _IO_off64_t, int, int) |
477 | __THROW; | |
0fca3153 | 478 | extern _IO_off64_t _IO_default_seekpos (_IO_FILE *, _IO_off64_t, int); |
102070bc UD |
479 | extern _IO_ssize_t _IO_default_write (_IO_FILE *, const void *, _IO_ssize_t); |
480 | extern _IO_ssize_t _IO_default_read (_IO_FILE *, void *, _IO_ssize_t); | |
79937577 UD |
481 | extern int _IO_default_stat (_IO_FILE *, void *) __THROW; |
482 | extern _IO_off64_t _IO_default_seek (_IO_FILE *, _IO_off64_t, int) __THROW; | |
483 | extern int _IO_default_sync (_IO_FILE *) __THROW; | |
40a55d20 | 484 | #define _IO_default_close ((_IO_close_t) _IO_default_sync) |
79937577 UD |
485 | extern int _IO_default_showmanyc (_IO_FILE *) __THROW; |
486 | extern void _IO_default_imbue (_IO_FILE *, void *) __THROW; | |
96aa2d94 | 487 | |
b2637a22 | 488 | extern const struct _IO_jump_t _IO_file_jumps; |
15a686af | 489 | libc_hidden_proto (_IO_file_jumps) |
b2637a22 UD |
490 | extern const struct _IO_jump_t _IO_file_jumps_mmap attribute_hidden; |
491 | extern const struct _IO_jump_t _IO_file_jumps_maybe_mmap attribute_hidden; | |
492 | extern const struct _IO_jump_t _IO_wfile_jumps; | |
15a686af | 493 | libc_hidden_proto (_IO_wfile_jumps) |
b2637a22 UD |
494 | extern const struct _IO_jump_t _IO_wfile_jumps_mmap attribute_hidden; |
495 | extern const struct _IO_jump_t _IO_wfile_jumps_maybe_mmap attribute_hidden; | |
496 | extern const struct _IO_jump_t _IO_old_file_jumps attribute_hidden; | |
497 | extern const struct _IO_jump_t _IO_streambuf_jumps; | |
498 | extern const struct _IO_jump_t _IO_old_proc_jumps attribute_hidden; | |
499 | extern const struct _IO_jump_t _IO_str_jumps attribute_hidden; | |
500 | extern const struct _IO_jump_t _IO_wstr_jumps attribute_hidden; | |
97d261ad | 501 | extern const struct _IO_codecvt __libio_codecvt attribute_hidden; |
0fca3153 | 502 | extern int _IO_do_write (_IO_FILE *, const char *, _IO_size_t); |
d18ea0c5 | 503 | libc_hidden_proto (_IO_do_write) |
0fca3153 UD |
504 | extern int _IO_new_do_write (_IO_FILE *, const char *, _IO_size_t); |
505 | extern int _IO_old_do_write (_IO_FILE *, const char *, _IO_size_t); | |
506 | extern int _IO_wdo_write (_IO_FILE *, const wchar_t *, _IO_size_t); | |
d18ea0c5 | 507 | libc_hidden_proto (_IO_wdo_write) |
0fca3153 UD |
508 | extern int _IO_flush_all_lockp (int); |
509 | extern int _IO_flush_all (void); | |
d18ea0c5 | 510 | libc_hidden_proto (_IO_flush_all) |
0fca3153 UD |
511 | extern int _IO_cleanup (void); |
512 | extern void _IO_flush_all_linebuffered (void); | |
d18ea0c5 | 513 | libc_hidden_proto (_IO_flush_all_linebuffered) |
0fca3153 UD |
514 | extern int _IO_new_fgetpos (_IO_FILE *, _IO_fpos_t *); |
515 | extern int _IO_old_fgetpos (_IO_FILE *, _IO_fpos_t *); | |
516 | extern int _IO_new_fsetpos (_IO_FILE *, const _IO_fpos_t *); | |
517 | extern int _IO_old_fsetpos (_IO_FILE *, const _IO_fpos_t *); | |
518 | extern int _IO_new_fgetpos64 (_IO_FILE *, _IO_fpos64_t *); | |
519 | extern int _IO_old_fgetpos64 (_IO_FILE *, _IO_fpos64_t *); | |
520 | extern int _IO_new_fsetpos64 (_IO_FILE *, const _IO_fpos64_t *); | |
521 | extern int _IO_old_fsetpos64 (_IO_FILE *, const _IO_fpos64_t *); | |
79937577 | 522 | extern void _IO_old_init (_IO_FILE *fp, int flags) __THROW; |
d64b6ad0 | 523 | |
96aa2d94 | 524 | |
319d719d UD |
525 | #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T |
526 | # define _IO_do_flush(_f) \ | |
d64b6ad0 | 527 | ((_f)->_mode <= 0 \ |
d18ea0c5 AS |
528 | ? _IO_do_write(_f, (_f)->_IO_write_base, \ |
529 | (_f)->_IO_write_ptr-(_f)->_IO_write_base) \ | |
530 | : _IO_wdo_write(_f, (_f)->_wide_data->_IO_write_base, \ | |
531 | ((_f)->_wide_data->_IO_write_ptr \ | |
532 | - (_f)->_wide_data->_IO_write_base))) | |
319d719d UD |
533 | #else |
534 | # define _IO_do_flush(_f) \ | |
d18ea0c5 AS |
535 | _IO_do_write(_f, (_f)->_IO_write_base, \ |
536 | (_f)->_IO_write_ptr-(_f)->_IO_write_base) | |
319d719d | 537 | #endif |
6973fc01 UD |
538 | #define _IO_old_do_flush(_f) \ |
539 | _IO_old_do_write(_f, (_f)->_IO_write_base, \ | |
540 | (_f)->_IO_write_ptr-(_f)->_IO_write_base) | |
96aa2d94 RM |
541 | #define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING) |
542 | #define _IO_mask_flags(fp, f, mask) \ | |
543 | ((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask))) | |
544 | #define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\ | |
545 | (fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg)) | |
d64b6ad0 UD |
546 | #define _IO_wsetg(fp, eb, g, eg) ((fp)->_wide_data->_IO_read_base = (eb),\ |
547 | (fp)->_wide_data->_IO_read_ptr = (g), \ | |
548 | (fp)->_wide_data->_IO_read_end = (eg)) | |
96aa2d94 | 549 | #define _IO_setp(__fp, __p, __ep) \ |
d64b6ad0 UD |
550 | ((__fp)->_IO_write_base = (__fp)->_IO_write_ptr \ |
551 | = __p, (__fp)->_IO_write_end = (__ep)) | |
552 | #define _IO_wsetp(__fp, __p, __ep) \ | |
553 | ((__fp)->_wide_data->_IO_write_base \ | |
554 | = (__fp)->_wide_data->_IO_write_ptr = __p, \ | |
555 | (__fp)->_wide_data->_IO_write_end = (__ep)) | |
96aa2d94 | 556 | #define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL) |
d64b6ad0 | 557 | #define _IO_have_wbackup(fp) ((fp)->_wide_data->_IO_save_base != NULL) |
96aa2d94 RM |
558 | #define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP) |
559 | #define _IO_have_markers(fp) ((fp)->_markers != NULL) | |
f65fd747 | 560 | #define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base) |
d64b6ad0 UD |
561 | #define _IO_wblen(fp) ((fp)->_wide_data->_IO_buf_end \ |
562 | - (fp)->_wide_data->_IO_buf_base) | |
96aa2d94 RM |
563 | |
564 | /* Jumptable functions for files. */ | |
565 | ||
79937577 | 566 | extern int _IO_file_doallocate (_IO_FILE *) __THROW; |
d18ea0c5 | 567 | libc_hidden_proto (_IO_file_doallocate) |
0fca3153 | 568 | extern _IO_FILE* _IO_file_setbuf (_IO_FILE *, char *, _IO_ssize_t); |
d18ea0c5 | 569 | libc_hidden_proto (_IO_file_setbuf) |
0fca3153 | 570 | extern _IO_off64_t _IO_file_seekoff (_IO_FILE *, _IO_off64_t, int, int); |
d18ea0c5 | 571 | libc_hidden_proto (_IO_file_seekoff) |
79937577 UD |
572 | extern _IO_off64_t _IO_file_seekoff_mmap (_IO_FILE *, _IO_off64_t, int, int) |
573 | __THROW; | |
0fca3153 | 574 | extern _IO_size_t _IO_file_xsputn (_IO_FILE *, const void *, _IO_size_t); |
d18ea0c5 | 575 | libc_hidden_proto (_IO_file_xsputn) |
0fca3153 | 576 | extern _IO_size_t _IO_file_xsgetn (_IO_FILE *, void *, _IO_size_t); |
d18ea0c5 | 577 | libc_hidden_proto (_IO_file_xsgetn) |
79937577 | 578 | extern int _IO_file_stat (_IO_FILE *, void *) __THROW; |
d18ea0c5 | 579 | libc_hidden_proto (_IO_file_stat) |
79937577 | 580 | extern int _IO_file_close (_IO_FILE *) __THROW; |
d18ea0c5 | 581 | libc_hidden_proto (_IO_file_close) |
79937577 | 582 | extern int _IO_file_close_mmap (_IO_FILE *) __THROW; |
0fca3153 | 583 | extern int _IO_file_underflow (_IO_FILE *); |
d18ea0c5 | 584 | libc_hidden_proto (_IO_file_underflow) |
0fca3153 UD |
585 | extern int _IO_file_underflow_mmap (_IO_FILE *); |
586 | extern int _IO_file_underflow_maybe_mmap (_IO_FILE *); | |
587 | extern int _IO_file_overflow (_IO_FILE *, int); | |
d18ea0c5 | 588 | libc_hidden_proto (_IO_file_overflow) |
110215a9 | 589 | #define _IO_file_is_open(__fp) ((__fp)->_fileno != -1) |
79937577 | 590 | extern void _IO_file_init (struct _IO_FILE_plus *) __THROW; |
d18ea0c5 | 591 | libc_hidden_proto (_IO_file_init) |
0fca3153 | 592 | extern _IO_FILE* _IO_file_attach (_IO_FILE *, int); |
d18ea0c5 | 593 | libc_hidden_proto (_IO_file_attach) |
0fca3153 | 594 | extern _IO_FILE* _IO_file_open (_IO_FILE *, const char *, int, int, int, int); |
ee2a5ae8 | 595 | libc_hidden_proto (_IO_file_open) |
0fca3153 | 596 | extern _IO_FILE* _IO_file_fopen (_IO_FILE *, const char *, const char *, int); |
d18ea0c5 | 597 | libc_hidden_proto (_IO_file_fopen) |
0fca3153 UD |
598 | extern _IO_ssize_t _IO_file_write (_IO_FILE *, const void *, _IO_ssize_t); |
599 | extern _IO_ssize_t _IO_file_read (_IO_FILE *, void *, _IO_ssize_t); | |
d18ea0c5 | 600 | libc_hidden_proto (_IO_file_read) |
0fca3153 | 601 | extern int _IO_file_sync (_IO_FILE *); |
d18ea0c5 | 602 | libc_hidden_proto (_IO_file_sync) |
0fca3153 | 603 | extern int _IO_file_close_it (_IO_FILE *); |
d18ea0c5 | 604 | libc_hidden_proto (_IO_file_close_it) |
79937577 | 605 | extern _IO_off64_t _IO_file_seek (_IO_FILE *, _IO_off64_t, int) __THROW; |
d18ea0c5 | 606 | libc_hidden_proto (_IO_file_seek) |
0fca3153 | 607 | extern void _IO_file_finish (_IO_FILE *, int); |
d18ea0c5 | 608 | libc_hidden_proto (_IO_file_finish) |
79937577 | 609 | |
0fca3153 UD |
610 | extern _IO_FILE* _IO_new_file_attach (_IO_FILE *, int); |
611 | extern int _IO_new_file_close_it (_IO_FILE *); | |
612 | extern void _IO_new_file_finish (_IO_FILE *, int); | |
79937577 | 613 | extern _IO_FILE* _IO_new_file_fopen (_IO_FILE *, const char *, const char *, |
0fca3153 | 614 | int); |
79937577 UD |
615 | extern void _IO_no_init (_IO_FILE *, int, int, struct _IO_wide_data *, |
616 | const struct _IO_jump_t *) __THROW; | |
617 | extern void _IO_new_file_init (struct _IO_FILE_plus *) __THROW; | |
0fca3153 UD |
618 | extern _IO_FILE* _IO_new_file_setbuf (_IO_FILE *, char *, _IO_ssize_t); |
619 | extern _IO_FILE* _IO_file_setbuf_mmap (_IO_FILE *, char *, _IO_ssize_t); | |
620 | extern int _IO_new_file_sync (_IO_FILE *); | |
621 | extern int _IO_new_file_underflow (_IO_FILE *); | |
622 | extern int _IO_new_file_overflow (_IO_FILE *, int); | |
623 | extern _IO_off64_t _IO_new_file_seekoff (_IO_FILE *, _IO_off64_t, int, int); | |
624 | extern _IO_ssize_t _IO_new_file_write (_IO_FILE *, const void *, _IO_ssize_t); | |
625 | extern _IO_size_t _IO_new_file_xsputn (_IO_FILE *, const void *, _IO_size_t); | |
626 | ||
627 | extern _IO_FILE* _IO_old_file_setbuf (_IO_FILE *, char *, _IO_ssize_t); | |
628 | extern _IO_off64_t _IO_old_file_seekoff (_IO_FILE *, _IO_off64_t, int, int); | |
629 | extern _IO_size_t _IO_old_file_xsputn (_IO_FILE *, const void *, _IO_size_t); | |
630 | extern int _IO_old_file_underflow (_IO_FILE *); | |
631 | extern int _IO_old_file_overflow (_IO_FILE *, int); | |
79937577 | 632 | extern void _IO_old_file_init (struct _IO_FILE_plus *) __THROW; |
0fca3153 UD |
633 | extern _IO_FILE* _IO_old_file_attach (_IO_FILE *, int); |
634 | extern _IO_FILE* _IO_old_file_fopen (_IO_FILE *, const char *, const char *); | |
635 | extern _IO_ssize_t _IO_old_file_write (_IO_FILE *, const void *, _IO_ssize_t); | |
636 | extern int _IO_old_file_sync (_IO_FILE *); | |
637 | extern int _IO_old_file_close_it (_IO_FILE *); | |
638 | extern void _IO_old_file_finish (_IO_FILE *, int); | |
79937577 UD |
639 | |
640 | extern int _IO_wfile_doallocate (_IO_FILE *) __THROW; | |
0fca3153 | 641 | extern _IO_size_t _IO_wfile_xsputn (_IO_FILE *, const void *, _IO_size_t); |
d18ea0c5 | 642 | libc_hidden_proto (_IO_wfile_xsputn) |
0fca3153 UD |
643 | extern _IO_FILE* _IO_wfile_setbuf (_IO_FILE *, wchar_t *, _IO_ssize_t); |
644 | extern wint_t _IO_wfile_sync (_IO_FILE *); | |
d18ea0c5 | 645 | libc_hidden_proto (_IO_wfile_sync) |
0fca3153 | 646 | extern wint_t _IO_wfile_underflow (_IO_FILE *); |
d18ea0c5 | 647 | libc_hidden_proto (_IO_wfile_underflow) |
0fca3153 | 648 | extern wint_t _IO_wfile_overflow (_IO_FILE *, wint_t); |
d18ea0c5 | 649 | libc_hidden_proto (_IO_wfile_overflow) |
0fca3153 | 650 | extern _IO_off64_t _IO_wfile_seekoff (_IO_FILE *, _IO_off64_t, int, int); |
d18ea0c5 | 651 | libc_hidden_proto (_IO_wfile_seekoff) |
d64b6ad0 | 652 | |
96aa2d94 | 653 | /* Jumptable functions for proc_files. */ |
79937577 UD |
654 | extern _IO_FILE* _IO_proc_open (_IO_FILE *, const char *, const char *) |
655 | __THROW; | |
656 | extern _IO_FILE* _IO_new_proc_open (_IO_FILE *, const char *, const char *) | |
657 | __THROW; | |
0fca3153 | 658 | extern _IO_FILE* _IO_old_proc_open (_IO_FILE *, const char *, const char *); |
79937577 UD |
659 | extern int _IO_proc_close (_IO_FILE *) __THROW; |
660 | extern int _IO_new_proc_close (_IO_FILE *) __THROW; | |
0fca3153 | 661 | extern int _IO_old_proc_close (_IO_FILE *); |
96aa2d94 RM |
662 | |
663 | /* Jumptable functions for strfiles. */ | |
79937577 | 664 | extern int _IO_str_underflow (_IO_FILE *) __THROW; |
d18ea0c5 | 665 | libc_hidden_proto (_IO_str_underflow) |
79937577 | 666 | extern int _IO_str_overflow (_IO_FILE *, int) __THROW; |
d18ea0c5 | 667 | libc_hidden_proto (_IO_str_overflow) |
79937577 | 668 | extern int _IO_str_pbackfail (_IO_FILE *, int) __THROW; |
d18ea0c5 | 669 | libc_hidden_proto (_IO_str_pbackfail) |
79937577 | 670 | extern _IO_off64_t _IO_str_seekoff (_IO_FILE *, _IO_off64_t, int, int) __THROW; |
d18ea0c5 | 671 | libc_hidden_proto (_IO_str_seekoff) |
79937577 | 672 | extern void _IO_str_finish (_IO_FILE *, int) __THROW; |
96aa2d94 RM |
673 | |
674 | /* Other strfile functions */ | |
2ca8b1ee | 675 | struct _IO_strfile_; |
79937577 UD |
676 | extern void _IO_str_init_static (struct _IO_strfile_ *, char *, int, char *) |
677 | __THROW; | |
678 | extern void _IO_str_init_readonly (struct _IO_strfile_ *, const char *, int) | |
679 | __THROW; | |
680 | extern _IO_ssize_t _IO_str_count (_IO_FILE *) __THROW; | |
96aa2d94 | 681 | |
d64b6ad0 | 682 | /* And the wide character versions. */ |
79937577 UD |
683 | extern void _IO_wstr_init_static (_IO_FILE *, wchar_t *, _IO_size_t, wchar_t *) |
684 | __THROW; | |
685 | extern _IO_ssize_t _IO_wstr_count (_IO_FILE *) __THROW; | |
686 | extern _IO_wint_t _IO_wstr_overflow (_IO_FILE *, _IO_wint_t) __THROW; | |
687 | extern _IO_wint_t _IO_wstr_underflow (_IO_FILE *) __THROW; | |
688 | extern _IO_off64_t _IO_wstr_seekoff (_IO_FILE *, _IO_off64_t, int, int) | |
689 | __THROW; | |
690 | extern _IO_wint_t _IO_wstr_pbackfail (_IO_FILE *, _IO_wint_t) __THROW; | |
691 | extern void _IO_wstr_finish (_IO_FILE *, int) __THROW; | |
692 | ||
a784e502 | 693 | extern int _IO_vasprintf (char **result_ptr, const char *format, |
79937577 | 694 | _IO_va_list args) __THROW; |
a784e502 | 695 | extern int _IO_vdprintf (int d, const char *format, _IO_va_list arg); |
79937577 | 696 | extern int _IO_vsnprintf (char *string, _IO_size_t maxlen, |
a784e502 | 697 | const char *format, _IO_va_list args) __THROW; |
79937577 UD |
698 | |
699 | ||
102070bc | 700 | extern _IO_size_t _IO_getline (_IO_FILE *,char *, _IO_size_t, int, int); |
d18ea0c5 | 701 | libc_hidden_proto (_IO_getline) |
79937577 | 702 | extern _IO_size_t _IO_getline_info (_IO_FILE *,char *, _IO_size_t, |
102070bc | 703 | int, int, int *); |
d18ea0c5 | 704 | libc_hidden_proto (_IO_getline_info) |
0fca3153 | 705 | extern _IO_ssize_t _IO_getdelim (char **, _IO_size_t *, int, _IO_FILE *); |
102070bc | 706 | extern _IO_size_t _IO_getwline (_IO_FILE *,wchar_t *, _IO_size_t, wint_t, int); |
79937577 | 707 | extern _IO_size_t _IO_getwline_info (_IO_FILE *,wchar_t *, _IO_size_t, |
102070bc | 708 | wint_t, int, wint_t *); |
96aa2d94 | 709 | |
2ca8b1ee | 710 | extern struct _IO_FILE_plus *_IO_list_all; |
d18ea0c5 | 711 | libc_hidden_proto (_IO_list_all) |
79937577 | 712 | extern void (*_IO_cleanup_registration_needed) (void); |
96aa2d94 | 713 | |
79937577 UD |
714 | extern void _IO_str_init_static_internal (struct _IO_strfile_ *, char *, |
715 | _IO_size_t, char *) __THROW; | |
52a16e58 | 716 | extern _IO_off64_t _IO_seekoff_unlocked (_IO_FILE *, _IO_off64_t, int, int) |
0fca3153 | 717 | attribute_hidden; |
52a16e58 | 718 | extern _IO_off64_t _IO_seekpos_unlocked (_IO_FILE *, _IO_off64_t, int) |
0fca3153 | 719 | attribute_hidden; |
77fe0b9c | 720 | |
96aa2d94 | 721 | #ifndef EOF |
40a55d20 | 722 | # define EOF (-1) |
96aa2d94 RM |
723 | #endif |
724 | #ifndef NULL | |
40a55d20 | 725 | # if defined __GNUG__ && \ |
f8b87ef0 | 726 | (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) |
40a55d20 UD |
727 | # define NULL (__null) |
728 | # else | |
729 | # if !defined(__cplusplus) | |
730 | # define NULL ((void*)0) | |
731 | # else | |
732 | # define NULL (0) | |
733 | # endif | |
734 | # endif | |
f65fd747 | 735 | #endif |
96aa2d94 | 736 | |
f8b87ef0 UD |
737 | #if _G_HAVE_MMAP |
738 | ||
40a55d20 UD |
739 | # include <unistd.h> |
740 | # include <fcntl.h> | |
741 | # include <sys/mman.h> | |
742 | # include <sys/param.h> | |
f8b87ef0 | 743 | |
40a55d20 UD |
744 | # if !defined(MAP_ANONYMOUS) && defined(MAP_ANON) |
745 | # define MAP_ANONYMOUS MAP_ANON | |
746 | # endif | |
f8b87ef0 | 747 | |
40a55d20 UD |
748 | # if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE) |
749 | # undef _G_HAVE_MMAP | |
750 | # define _G_HAVE_MMAP 0 | |
751 | # endif | |
f8b87ef0 UD |
752 | |
753 | #endif /* _G_HAVE_MMAP */ | |
754 | ||
755 | #if _G_HAVE_MMAP | |
756 | ||
40a55d20 | 757 | # ifdef _LIBC |
10dc2a90 | 758 | /* When using this code in the GNU libc we must not pollute the name space. */ |
40a55d20 UD |
759 | # define mmap __mmap |
760 | # define munmap __munmap | |
dfd2257a | 761 | # define ftruncate __ftruncate |
40a55d20 | 762 | # endif |
f8b87ef0 | 763 | #endif /* _G_HAVE_MMAP */ |
96aa2d94 RM |
764 | |
765 | #ifndef OS_FSTAT | |
40a55d20 | 766 | # define OS_FSTAT fstat |
96aa2d94 | 767 | #endif |
79937577 | 768 | extern int _IO_vscanf (const char *, _IO_va_list) __THROW; |
96aa2d94 | 769 | |
d64b6ad0 | 770 | /* _IO_pos_BAD is an _IO_off64_t value indicating error, unknown, or EOF. */ |
96aa2d94 | 771 | #ifndef _IO_pos_BAD |
d64b6ad0 | 772 | # define _IO_pos_BAD ((_IO_off64_t) -1) |
96aa2d94 | 773 | #endif |
d64b6ad0 | 774 | /* _IO_pos_adjust adjust an _IO_off64_t by some number of bytes. */ |
96aa2d94 | 775 | #ifndef _IO_pos_adjust |
d64b6ad0 | 776 | # define _IO_pos_adjust(pos, delta) ((pos) += (delta)) |
96aa2d94 | 777 | #endif |
d64b6ad0 | 778 | /* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */ |
96aa2d94 | 779 | #ifndef _IO_pos_0 |
d64b6ad0 | 780 | # define _IO_pos_0 ((_IO_off64_t) 0) |
96aa2d94 RM |
781 | #endif |
782 | ||
4547c1a4 UD |
783 | #ifdef __cplusplus |
784 | } | |
785 | #endif | |
96aa2d94 | 786 | |
499e7464 | 787 | #ifdef _IO_MTSAFE_IO |
96aa2d94 | 788 | /* check following! */ |
1ddf537f | 789 | # ifdef _IO_USE_OLD_IO_FILE |
d64b6ad0 | 790 | # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \ |
96aa2d94 | 791 | { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \ |
319d719d | 792 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \ |
73c115ed | 793 | 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock } |
1ddf537f | 794 | # else |
319d719d UD |
795 | # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T |
796 | # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \ | |
1ddf537f | 797 | { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \ |
319d719d | 798 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \ |
d64b6ad0 UD |
799 | 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\ |
800 | NULL, WDP, 0 } | |
319d719d UD |
801 | # else |
802 | # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \ | |
803 | { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \ | |
804 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \ | |
805 | 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\ | |
806 | 0 } | |
807 | # endif | |
1ddf537f | 808 | # endif |
499e7464 | 809 | #else |
1ddf537f | 810 | # ifdef _IO_USE_OLD_IO_FILE |
b4e3df5d | 811 | # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \ |
499e7464 | 812 | { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \ |
73c115ed GM |
813 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \ |
814 | 0, _IO_pos_BAD } | |
1ddf537f | 815 | # else |
319d719d UD |
816 | # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T |
817 | # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \ | |
1ddf537f | 818 | { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \ |
319d719d | 819 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \ |
d64b6ad0 UD |
820 | 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \ |
821 | NULL, WDP, 0 } | |
319d719d UD |
822 | # else |
823 | # define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \ | |
824 | { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \ | |
825 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \ | |
826 | 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \ | |
827 | 0 } | |
828 | # endif | |
1ddf537f | 829 | # endif |
499e7464 | 830 | #endif |
96aa2d94 | 831 | |
965a54a4 | 832 | #define _IO_va_start(args, last) va_start(args, last) |
96aa2d94 RM |
833 | |
834 | extern struct _IO_fake_stdiobuf _IO_stdin_buf, _IO_stdout_buf, _IO_stderr_buf; | |
835 | ||
836 | #if 1 | |
40a55d20 | 837 | # define COERCE_FILE(FILE) /* Nothing */ |
96aa2d94 RM |
838 | #else |
839 | /* This is part of the kludge for binary compatibility with old stdio. */ | |
40a55d20 | 840 | # define COERCE_FILE(FILE) \ |
96aa2d94 RM |
841 | (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) == _OLD_MAGIC_MASK \ |
842 | && (FILE) = *(FILE**)&((int*)fp)[1]) | |
843 | #endif | |
844 | ||
845 | #ifdef EINVAL | |
40a55d20 | 846 | # define MAYBE_SET_EINVAL __set_errno (EINVAL) |
96aa2d94 | 847 | #else |
40a55d20 | 848 | # define MAYBE_SET_EINVAL /* nothing */ |
96aa2d94 RM |
849 | #endif |
850 | ||
f65fd747 | 851 | #ifdef IO_DEBUG |
40a55d20 | 852 | # define CHECK_FILE(FILE, RET) \ |
96aa2d94 RM |
853 | if ((FILE) == NULL) { MAYBE_SET_EINVAL; return RET; } \ |
854 | else { COERCE_FILE(FILE); \ | |
855 | if (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \ | |
68dbb3a6 | 856 | { MAYBE_SET_EINVAL; return RET; }} |
96aa2d94 | 857 | #else |
40a55d20 | 858 | # define CHECK_FILE(FILE, RET) COERCE_FILE (FILE) |
96aa2d94 | 859 | #endif |
eef80cf8 UD |
860 | |
861 | static inline void | |
862 | __attribute__ ((__always_inline__)) | |
863 | _IO_acquire_lock_fct (_IO_FILE **p) | |
864 | { | |
865 | _IO_FILE *fp = *p; | |
866 | if ((fp->_flags & _IO_USER_LOCK) == 0) | |
867 | _IO_funlockfile (fp); | |
868 | } | |
b257c726 UD |
869 | |
870 | static inline void | |
871 | __attribute__ ((__always_inline__)) | |
872 | _IO_acquire_lock_clear_flags2_fct (_IO_FILE **p) | |
873 | { | |
874 | _IO_FILE *fp = *p; | |
874aa523 | 875 | fp->_flags2 &= ~(_IO_FLAGS2_FORTIFY | _IO_FLAGS2_SCANF_STD); |
b257c726 UD |
876 | if ((fp->_flags & _IO_USER_LOCK) == 0) |
877 | _IO_funlockfile (fp); | |
878 | } | |
b2e1c562 | 879 | |
4f41c682 | 880 | #if !defined _IO_MTSAFE_IO && IS_IN (libc) |
b2e1c562 RM |
881 | # define _IO_acquire_lock(_fp) \ |
882 | do { \ | |
883 | _IO_FILE *_IO_acquire_lock_file = NULL | |
884 | # define _IO_acquire_lock_clear_flags2(_fp) \ | |
885 | do { \ | |
886 | _IO_FILE *_IO_acquire_lock_file = (_fp) | |
887 | # define _IO_release_lock(_fp) \ | |
888 | if (_IO_acquire_lock_file != NULL) \ | |
889 | _IO_acquire_lock_file->_flags2 &= ~(_IO_FLAGS2_FORTIFY \ | |
890 | | _IO_FLAGS2_SCANF_STD); \ | |
891 | } while (0) | |
892 | #endif |