aboutsummaryrefslogtreecommitdiff
path: root/include/stdio.h
blob: 23b7fd288cdaba66b1740efa8e03b08cd8469b9d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
#ifndef _STDIO_H
# if !defined _ISOMAC && defined _IO_MTSAFE_IO
#  include <stdio-lock.h>
# endif

/* Workaround PR90731 with GCC 9 when using ldbl redirects in C++.  */
# include <bits/floatn.h>
# if defined __cplusplus && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
#  if __GNUC_PREREQ (9, 0) && !__GNUC_PREREQ (9, 3)
#    pragma GCC system_header
#  endif
# endif

# include <libio/stdio.h>
# ifndef _ISOMAC

#  define _LIBC_STDIO_H 1
#  include <libio/libio.h>

/* Now define the internal interfaces.  */

/*  Some libc_hidden_ldbl_proto's do not map to a unique symbol when
    redirecting ldouble to _Float128 variants.  We can therefore safely
    directly alias them to their internal name.  */
# if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 && IS_IN (libc)
#  define stdio_hidden_ldbl_proto(p, f) \
  extern __typeof (p ## f) p ## f __asm (__ASMNAME ("___ieee128_" #f));
# elif __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
#  define stdio_hidden_ldbl_proto(p,f) __LDBL_REDIR1_DECL (p ## f, p ## f ## ieee128)
# else
#  define stdio_hidden_ldbl_proto(p,f) libc_hidden_proto (p ## f)
# endif

/* Set the error indicator on FP.  */
static inline void
fseterr_unlocked (FILE *fp)
{
  fp->_flags |= _IO_ERR_SEEN;
}

extern int __fcloseall (void) attribute_hidden;
extern int __snprintf (char *__restrict __s, size_t __maxlen,
		       const char *__restrict __format, ...)
     __attribute__ ((__format__ (__printf__, 3, 4)));
stdio_hidden_ldbl_proto (__, snprintf)

extern int __vfscanf (FILE *__restrict __s,
		      const char *__restrict __format,
		      __gnuc_va_list __arg)
     __attribute__ ((__format__ (__scanf__, 2, 0)));
libc_hidden_proto (__vfscanf)
extern int __vscanf (const char *__restrict __format,
		     __gnuc_va_list __arg)
     __attribute__ ((__format__ (__scanf__, 1, 0)));
extern __ssize_t __getline (char **__lineptr, size_t *__n,
                            FILE *__stream) attribute_hidden;
extern int __vsscanf (const char *__restrict __s,
		      const char *__restrict __format,
		      __gnuc_va_list __arg)
     __attribute__ ((__format__ (__scanf__, 2, 0)));

extern int __sprintf_chk (char *, int, size_t, const char *, ...) __THROW;
extern int __snprintf_chk (char *, size_t, int, size_t, const char *, ...)
     __THROW;
extern int __vsprintf_chk (char *, int, size_t, const char *,
			   __gnuc_va_list) __THROW;
extern int __vsnprintf_chk (char *, size_t, int, size_t, const char *,
			    __gnuc_va_list) __THROW;
extern int __printf_chk (int, const char *, ...);
extern int __fprintf_chk (FILE *, int, const char *, ...);
extern int __vprintf_chk (int, const char *, __gnuc_va_list);
extern int __vfprintf_chk (FILE *, int, const char *, __gnuc_va_list);
extern char *__fgets_unlocked_chk (char *buf, size_t size, int n, FILE *fp);
extern char *__fgets_chk (char *buf, size_t size, int n, FILE *fp);
extern int __asprintf_chk (char **, int, const char *, ...) __THROW;
extern int __vasprintf_chk (char **, int, const char *, __gnuc_va_list) __THROW;
extern int __dprintf_chk (int, int, const char *, ...);
extern int __vdprintf_chk (int, int, const char *, __gnuc_va_list);
extern int __obstack_printf_chk (struct obstack *, int, const char *, ...)
     __THROW;
extern int __obstack_vprintf_chk (struct obstack *, int, const char *,
				  __gnuc_va_list) __THROW;

extern int __isoc99_fscanf (FILE *__restrict __stream,
			    const char *__restrict __format, ...) __wur;
extern int __isoc99_scanf (const char *__restrict __format, ...) __wur;
extern int __isoc99_sscanf (const char *__restrict __s,
			    const char *__restrict __format, ...) __THROW;
extern int __isoc99_vfscanf (FILE *__restrict __s,
			     const char *__restrict __format,
			     __gnuc_va_list __arg) __wur;
extern int __isoc99_vscanf (const char *__restrict __format,
			    __gnuc_va_list __arg) __wur;
extern int __isoc99_vsscanf (const char *__restrict __s,
			     const char *__restrict __format,
			     __gnuc_va_list __arg) __THROW;

libc_hidden_proto (__isoc99_sscanf)
libc_hidden_proto (__isoc99_vsscanf)
libc_hidden_proto (__isoc99_vfscanf)

/* Internal uses of sscanf should call the C99-compliant version.
   Unfortunately, symbol redirection is not transitive, so the
   __REDIRECT in the public header does not link up with the above
   libc_hidden_proto.  Bridge the gap with a macro.  */
#  if !__GLIBC_USE (DEPRECATED_SCANF)
#   undef sscanf
#   define sscanf __isoc99_sscanf
#  endif

#  if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1  && IS_IN (libc)
/* These are implemented as redirects to other public API.
   Therefore, the usual redirection fails to avoid PLT.  */
extern __typeof (__isoc99_sscanf) ___ieee128_isoc99_sscanf __THROW;
extern __typeof (__isoc99_vsscanf) ___ieee128_isoc99_vsscanf __THROW;
extern __typeof (__isoc99_vfscanf) ___ieee128_isoc99_vfscanf __THROW;
libc_hidden_proto (___ieee128_isoc99_sscanf)
libc_hidden_proto (___ieee128_isoc99_vsscanf)
libc_hidden_proto (___ieee128_isoc99_vfscanf)
#define __isoc99_sscanf ___ieee128_isoc99_sscanf
#define __isoc99_vsscanf ___ieee128_isoc99_vsscanf
#define __isoc99_vfscanf ___ieee128_isoc99_vfscanf
#  endif

/* Prototypes for compatibility functions.  */
extern FILE *__new_tmpfile (void);
extern FILE *__old_tmpfile (void);

#  define __need_size_t
#  include <stddef.h>

#  include <bits/types/wint_t.h>

/* Generate a unique file name (and possibly open it).  */
extern int __path_search (char *__tmpl, size_t __tmpl_len,
			  const char *__dir, const char *__pfx,
			  int __try_tempdir) attribute_hidden;

extern int __gen_tempname (char *__tmpl, int __suffixlen, int __flags,
			   int __kind) attribute_hidden;
/* The __kind argument to __gen_tempname may be one of: */
#  define __GT_FILE	0	/* create a file */
#  define __GT_DIR	1	/* create a directory */
#  define __GT_NOCREATE	2	/* just find a name not currently in use */

enum __libc_message_action
{
  do_message	= 0,		/* Print message.  */
  do_abort	= 1 << 0,	/* Abort.  */
};

/* Print out MESSAGE (which should end with a newline) on the error output
   and abort.  */
extern void __libc_fatal (const char *__message)
     __attribute__ ((__noreturn__));
extern void __libc_message (enum __libc_message_action action,
			    const char *__fnt, ...) attribute_hidden;
extern void __fortify_fail (const char *msg) __attribute__ ((__noreturn__));
libc_hidden_proto (__fortify_fail)

/* Acquire ownership of STREAM.  */
extern void __flockfile (FILE *__stream) attribute_hidden;

/* Relinquish the ownership granted for STREAM.  */
extern void __funlockfile (FILE *__stream) attribute_hidden;

/* Try to acquire ownership of STREAM but do not block if it is not
   possible.  */
extern int __ftrylockfile (FILE *__stream);

extern int __getc_unlocked (FILE *__fp) attribute_hidden;
extern wint_t __getwc_unlocked (FILE *__fp);

extern int __fxprintf (FILE *__fp, const char *__fmt, ...)
     __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
extern int __fxprintf_nocancel (FILE *__fp, const char *__fmt, ...)
     __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
int __vfxprintf (FILE *__fp, const char *__fmt, __gnuc_va_list,
		 unsigned int)
  attribute_hidden;

extern const char *const _sys_errlist_internal[] attribute_hidden;
extern const char *__get_errlist (int) attribute_hidden;
extern const char *__get_errname (int) attribute_hidden;

libc_hidden_ldbl_proto (__asprintf)

#  if IS_IN (libc)
extern FILE *_IO_new_fopen (const char*, const char*);
#   define fopen(fname, mode) _IO_new_fopen (fname, mode)
extern FILE *_IO_new_fdopen (int, const char*);
#   define fdopen(fd, mode) _IO_new_fdopen (fd, mode)
extern int _IO_new_fclose (FILE*);
#   define fclose(fp) _IO_new_fclose (fp)
extern int _IO_fputs (const char*, FILE*);
libc_hidden_proto (_IO_fputs)
/* The compiler may optimize calls to fprintf into calls to fputs.
   Use libc_hidden_proto to ensure that those calls, not redirected by
   the fputs macro, also do not go through the PLT.  */
libc_hidden_proto (fputs)
#   define fputs(str, fp) _IO_fputs (str, fp)
extern int _IO_new_fsetpos (FILE *, const __fpos_t *);
#   define fsetpos(fp, posp) _IO_new_fsetpos (fp, posp)
extern int _IO_new_fgetpos (FILE *, __fpos_t *);
#   define fgetpos(fp, posp) _IO_new_fgetpos (fp, posp)
#  endif

extern __typeof (dprintf) __dprintf
     __attribute__ ((__format__ (__printf__, 2, 3)));
stdio_hidden_ldbl_proto (__, dprintf)
libc_hidden_ldbl_proto (dprintf)
libc_hidden_ldbl_proto (fprintf)
libc_hidden_ldbl_proto (vfprintf)
libc_hidden_ldbl_proto (sprintf)
libc_hidden_proto (ungetc)
libc_hidden_proto (__getdelim)
libc_hidden_proto (fwrite)
libc_hidden_proto (perror)
libc_hidden_proto (remove)
libc_hidden_proto (rewind)
libc_hidden_proto (fileno)
extern __typeof (fileno) __fileno;
libc_hidden_proto (__fileno)
libc_hidden_proto (fwrite)
libc_hidden_proto (fseek)
extern __typeof (ftello) __ftello;
libc_hidden_proto (__ftello)
extern __typeof (fseeko64) __fseeko64;
libc_hidden_proto (__fseeko64)
extern __typeof (ftello64) __ftello64;
libc_hidden_proto (__ftello64)
libc_hidden_proto (fflush)
libc_hidden_proto (fflush_unlocked)
extern __typeof (fflush_unlocked) __fflush_unlocked;
libc_hidden_proto (__fflush_unlocked)
extern __typeof (fread_unlocked) __fread_unlocked;
libc_hidden_proto (__fread_unlocked)
libc_hidden_proto (fwrite_unlocked)
libc_hidden_proto (fgets_unlocked)
extern __typeof (fgets_unlocked) __fgets_unlocked;
libc_hidden_proto (__fgets_unlocked)
libc_hidden_proto (fputs_unlocked)
extern __typeof (fputs_unlocked) __fputs_unlocked;
libc_hidden_proto (__fputs_unlocked)
libc_hidden_proto (feof_unlocked)
extern __typeof (feof_unlocked) __feof_unlocked attribute_hidden;
libc_hidden_proto (ferror_unlocked)
extern __typeof (ferror_unlocked) __ferror_unlocked attribute_hidden;
libc_hidden_proto (getc_unlocked)
libc_hidden_proto (fputc_unlocked)
libc_hidden_proto (putc_unlocked)
extern __typeof (putc_unlocked) __putc_unlocked attribute_hidden;
libc_hidden_proto (fmemopen)
/* The prototype needs repeating instead of using __typeof to use
   __THROW in C++ tests.  */
extern FILE *__open_memstream (char **, size_t *) __THROW __wur;
libc_hidden_proto (__open_memstream)
libc_hidden_proto (__libc_fatal)
rtld_hidden_proto (__libc_fatal)
libc_hidden_proto (__vsprintf_chk)

extern FILE * __fmemopen (void *buf, size_t len, const char *mode);
libc_hidden_proto (__fmemopen)

extern int __gen_tempfd (int flags);
libc_hidden_proto (__gen_tempfd)

#  ifdef __USE_EXTERN_INLINES
__extern_inline int
__NTH (__feof_unlocked (FILE *__stream))
{
  return __feof_unlocked_body (__stream);
}

__extern_inline int
__NTH (__ferror_unlocked (FILE *__stream))
{
  return __ferror_unlocked_body (__stream);
}

__extern_inline int
__getc_unlocked (FILE *__fp)
{
  return __getc_unlocked_body (__fp);
}

__extern_inline int
__putc_unlocked (int __c, FILE *__stream)
{
  return __putc_unlocked_body (__c, __stream);
}
#  endif

extern __typeof (renameat) __renameat;
libc_hidden_proto (__renameat)
extern __typeof (renameat2) __renameat2;
libc_hidden_proto (__renameat2)

# endif /* not _ISOMAC */
#endif /* stdio.h */