]> git.ipfire.org Git - thirdparty/glibc.git/blame - include/stdio.h
string: Ensure *_chk routines have their hidden builtin definition available
[thirdparty/glibc.git] / include / stdio.h
CommitLineData
6796bc80 1#ifndef _STDIO_H
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2# if !defined _ISOMAC && defined _IO_MTSAFE_IO
3# include <stdio-lock.h>
4# endif
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5
6/* Workaround PR90731 with GCC 9 when using ldbl redirects in C++. */
7# include <bits/floatn.h>
e2239af3 8# if defined __cplusplus && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
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9# if __GNUC_PREREQ (9, 0) && !__GNUC_PREREQ (9, 3)
10# pragma GCC system_header
11# endif
12# endif
13
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14# include <libio/stdio.h>
15# ifndef _ISOMAC
86005fdb 16
a4fea3f2 17# define _LIBC_STDIO_H 1
6c6c962a 18# include <libio/libio.h>
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19
20/* Now define the internal interfaces. */
b15549e6 21
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22/* Some libc_hidden_ldbl_proto's do not map to a unique symbol when
23 redirecting ldouble to _Float128 variants. We can therefore safely
24 directly alias them to their internal name. */
e2239af3 25# if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 && IS_IN (libc)
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26# define stdio_hidden_ldbl_proto(p, f) \
27 extern __typeof (p ## f) p ## f __asm (__ASMNAME ("___ieee128_" #f));
e2239af3 28# elif __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
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29# define stdio_hidden_ldbl_proto(p,f) __LDBL_REDIR1_DECL (p ## f, p ## f ## ieee128)
30# else
31# define stdio_hidden_ldbl_proto(p,f) libc_hidden_proto (p ## f)
32# endif
33
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34/* Set the error indicator on FP. */
35static inline void
36fseterr_unlocked (FILE *fp)
37{
38 fp->_flags |= _IO_ERR_SEEN;
39}
40
2e0a6909 41extern int __fcloseall (void) attribute_hidden;
aaa8d85c 42extern int __snprintf (char *__restrict __s, size_t __maxlen,
a784e502 43 const char *__restrict __format, ...)
bdbf022d 44 __attribute__ ((__format__ (__printf__, 3, 4)));
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45stdio_hidden_ldbl_proto (__, snprintf)
46
aaa8d85c 47extern int __vfscanf (FILE *__restrict __s,
a784e502 48 const char *__restrict __format,
63fb8f9a 49 __gnuc_va_list __arg)
bdbf022d 50 __attribute__ ((__format__ (__scanf__, 2, 0)));
a20d8dbe 51libc_hidden_proto (__vfscanf)
a784e502 52extern int __vscanf (const char *__restrict __format,
63fb8f9a 53 __gnuc_va_list __arg)
bdbf022d 54 __attribute__ ((__format__ (__scanf__, 1, 0)));
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55extern __ssize_t __getline (char **__lineptr, size_t *__n,
56 FILE *__stream) attribute_hidden;
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57extern int __vsscanf (const char *__restrict __s,
58 const char *__restrict __format,
63fb8f9a 59 __gnuc_va_list __arg)
bfce746a 60 __attribute__ ((__format__ (__scanf__, 2, 0)));
bdbf022d 61
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62extern int __sprintf_chk (char *, int, size_t, const char *, ...) __THROW;
63extern int __snprintf_chk (char *, size_t, int, size_t, const char *, ...)
64 __THROW;
65extern int __vsprintf_chk (char *, int, size_t, const char *,
63fb8f9a 66 __gnuc_va_list) __THROW;
b5cc329c 67extern int __vsnprintf_chk (char *, size_t, int, size_t, const char *,
63fb8f9a 68 __gnuc_va_list) __THROW;
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69extern int __printf_chk (int, const char *, ...);
70extern int __fprintf_chk (FILE *, int, const char *, ...);
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71extern int __vprintf_chk (int, const char *, __gnuc_va_list);
72extern int __vfprintf_chk (FILE *, int, const char *, __gnuc_va_list);
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73extern char *__fgets_unlocked_chk (char *buf, size_t size, int n, FILE *fp);
74extern char *__fgets_chk (char *buf, size_t size, int n, FILE *fp);
dff37515 75extern int __asprintf_chk (char **, int, const char *, ...) __THROW;
63fb8f9a 76extern int __vasprintf_chk (char **, int, const char *, __gnuc_va_list) __THROW;
dff37515 77extern int __dprintf_chk (int, int, const char *, ...);
63fb8f9a 78extern int __vdprintf_chk (int, int, const char *, __gnuc_va_list);
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79extern int __obstack_printf_chk (struct obstack *, int, const char *, ...)
80 __THROW;
81extern int __obstack_vprintf_chk (struct obstack *, int, const char *,
63fb8f9a 82 __gnuc_va_list) __THROW;
b5cc329c 83
874aa523 84extern int __isoc99_fscanf (FILE *__restrict __stream,
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85 const char *__restrict __format, ...) __wur;
86extern int __isoc99_scanf (const char *__restrict __format, ...) __wur;
87extern int __isoc99_sscanf (const char *__restrict __s,
88 const char *__restrict __format, ...) __THROW;
874aa523 89extern int __isoc99_vfscanf (FILE *__restrict __s,
a784e502 90 const char *__restrict __format,
63fb8f9a 91 __gnuc_va_list __arg) __wur;
a784e502 92extern int __isoc99_vscanf (const char *__restrict __format,
63fb8f9a 93 __gnuc_va_list __arg) __wur;
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94extern int __isoc99_vsscanf (const char *__restrict __s,
95 const char *__restrict __format,
63fb8f9a 96 __gnuc_va_list __arg) __THROW;
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97extern int __isoc23_fscanf (FILE *__restrict __stream,
98 const char *__restrict __format, ...) __wur;
99extern int __isoc23_scanf (const char *__restrict __format, ...) __wur;
100extern int __isoc23_sscanf (const char *__restrict __s,
101 const char *__restrict __format, ...) __THROW;
102extern int __isoc23_vfscanf (FILE *__restrict __s,
103 const char *__restrict __format,
104 __gnuc_va_list __arg) __wur;
105extern int __isoc23_vscanf (const char *__restrict __format,
106 __gnuc_va_list __arg) __wur;
107extern int __isoc23_vsscanf (const char *__restrict __s,
108 const char *__restrict __format,
109 __gnuc_va_list __arg) __THROW;
45ae17dd 110
03992356 111libc_hidden_proto (__isoc99_sscanf)
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112libc_hidden_proto (__isoc99_vsscanf)
113libc_hidden_proto (__isoc99_vfscanf)
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114libc_hidden_proto (__isoc23_sscanf)
115libc_hidden_proto (__isoc23_vsscanf)
116libc_hidden_proto (__isoc23_vfscanf)
874aa523 117
dee2bea0 118/* Internal uses of sscanf should call the C2X-compliant version.
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119 Unfortunately, symbol redirection is not transitive, so the
120 __REDIRECT in the public header does not link up with the above
121 libc_hidden_proto. Bridge the gap with a macro. */
45ae17dd 122# if !__GLIBC_USE (DEPRECATED_SCANF)
03992356 123# undef sscanf
dee2bea0 124# define sscanf __isoc23_sscanf
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125# endif
126
e2239af3 127# if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 && IS_IN (libc)
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128/* These are implemented as redirects to other public API.
129 Therefore, the usual redirection fails to avoid PLT. */
130extern __typeof (__isoc99_sscanf) ___ieee128_isoc99_sscanf __THROW;
131extern __typeof (__isoc99_vsscanf) ___ieee128_isoc99_vsscanf __THROW;
132extern __typeof (__isoc99_vfscanf) ___ieee128_isoc99_vfscanf __THROW;
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133extern __typeof (__isoc23_sscanf) ___ieee128_isoc23_sscanf __THROW;
134extern __typeof (__isoc23_vsscanf) ___ieee128_isoc23_vsscanf __THROW;
135extern __typeof (__isoc23_vfscanf) ___ieee128_isoc23_vfscanf __THROW;
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136libc_hidden_proto (___ieee128_isoc99_sscanf)
137libc_hidden_proto (___ieee128_isoc99_vsscanf)
138libc_hidden_proto (___ieee128_isoc99_vfscanf)
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139libc_hidden_proto (___ieee128_isoc23_sscanf)
140libc_hidden_proto (___ieee128_isoc23_vsscanf)
141libc_hidden_proto (___ieee128_isoc23_vfscanf)
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142#define __isoc99_sscanf ___ieee128_isoc99_sscanf
143#define __isoc99_vsscanf ___ieee128_isoc99_vsscanf
144#define __isoc99_vfscanf ___ieee128_isoc99_vfscanf
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145#define __isoc23_sscanf ___ieee128_isoc23_sscanf
146#define __isoc23_vsscanf ___ieee128_isoc23_vsscanf
147#define __isoc23_vfscanf ___ieee128_isoc23_vfscanf
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148# endif
149
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150/* Prototypes for compatibility functions. */
151extern FILE *__new_tmpfile (void);
152extern FILE *__old_tmpfile (void);
153
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154# define __need_size_t
155# include <stddef.h>
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156
157# include <bits/types/wint_t.h>
158
992af677 159/* Generate a unique file name (and possibly open it). */
aaa8d85c 160extern int __path_search (char *__tmpl, size_t __tmpl_len,
a784e502 161 const char *__dir, const char *__pfx,
2e0a6909 162 int __try_tempdir) attribute_hidden;
992af677 163
7f3146e7 164extern int __gen_tempname (char *__tmpl, int __suffixlen, int __flags,
2e0a6909 165 int __kind) attribute_hidden;
2e65ca2b 166/* The __kind argument to __gen_tempname may be one of: */
ab58d620 167# define __GT_FILE 0 /* create a file */
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168# define __GT_DIR 1 /* create a directory */
169# define __GT_NOCREATE 2 /* just find a name not currently in use */
992af677 170
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171/* Print out MESSAGE (which should end with a newline) on the error output
172 and abort. */
a784e502 173extern void __libc_fatal (const char *__message)
992af677 174 __attribute__ ((__noreturn__));
cca9684f 175_Noreturn void __libc_message (const char *__fnt, ...) attribute_hidden;
1b0bfc69 176extern void __fortify_fail (const char *msg) __attribute__ ((__noreturn__));
3a50811c 177libc_hidden_proto (__fortify_fail)
992af677 178
d4b0774f 179/* Acquire ownership of STREAM. */
2e0a6909 180extern void __flockfile (FILE *__stream) attribute_hidden;
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181
182/* Relinquish the ownership granted for STREAM. */
2e0a6909 183extern void __funlockfile (FILE *__stream) attribute_hidden;
d1646309 184
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185/* Try to acquire ownership of STREAM but do not block if it is not
186 possible. */
187extern int __ftrylockfile (FILE *__stream);
188
30ac923d 189extern int __getc_unlocked (FILE *__fp) attribute_hidden;
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190extern wint_t __getwc_unlocked (FILE *__fp);
191
8a259a23 192extern int __fxprintf (FILE *__fp, const char *__fmt, ...)
2e0a6909 193 __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
544ce845 194extern int __fxprintf_nocancel (FILE *__fp, const char *__fmt, ...)
2e0a6909 195 __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
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196int __vfxprintf (FILE *__fp, const char *__fmt, __gnuc_va_list,
197 unsigned int)
fdb16de3 198 attribute_hidden;
03bac9ac 199
a784e502 200extern const char *const _sys_errlist_internal[] attribute_hidden;
900fa257 201extern const size_t _sys_errlist_internal_len attribute_hidden;
f13d2601 202extern const char *__get_errlist (int) attribute_hidden;
325081b9 203extern const char *__get_errname (int) attribute_hidden;
77fe0b9c 204
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205libc_hidden_ldbl_proto (__asprintf)
206
4f41c682 207# if IS_IN (libc)
9964a145 208extern FILE *_IO_new_fopen (const char*, const char*);
3ba06713 209# define fopen(fname, mode) _IO_new_fopen (fname, mode)
9964a145 210extern FILE *_IO_new_fdopen (int, const char*);
3ba06713 211# define fdopen(fd, mode) _IO_new_fdopen (fd, mode)
9964a145 212extern int _IO_new_fclose (FILE*);
3ba06713 213# define fclose(fp) _IO_new_fclose (fp)
9964a145 214extern int _IO_fputs (const char*, FILE*);
3ba06713 215libc_hidden_proto (_IO_fputs)
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216/* The compiler may optimize calls to fprintf into calls to fputs.
217 Use libc_hidden_proto to ensure that those calls, not redirected by
218 the fputs macro, also do not go through the PLT. */
219libc_hidden_proto (fputs)
3ba06713 220# define fputs(str, fp) _IO_fputs (str, fp)
9964a145 221extern int _IO_new_fsetpos (FILE *, const __fpos_t *);
3ba06713 222# define fsetpos(fp, posp) _IO_new_fsetpos (fp, posp)
9964a145 223extern int _IO_new_fgetpos (FILE *, __fpos_t *);
3ba06713 224# define fgetpos(fp, posp) _IO_new_fgetpos (fp, posp)
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225# endif
226
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227extern __typeof (dprintf) __dprintf
228 __attribute__ ((__format__ (__printf__, 2, 3)));
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229stdio_hidden_ldbl_proto (__, dprintf)
230libc_hidden_ldbl_proto (dprintf)
231libc_hidden_ldbl_proto (fprintf)
232libc_hidden_ldbl_proto (vfprintf)
233libc_hidden_ldbl_proto (sprintf)
771473a8 234libc_hidden_proto (ungetc)
7fcdb532 235libc_hidden_proto (__getdelim)
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236libc_hidden_proto (fwrite)
237libc_hidden_proto (perror)
238libc_hidden_proto (remove)
239libc_hidden_proto (rewind)
3ba06713 240libc_hidden_proto (fileno)
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241extern __typeof (fileno) __fileno;
242libc_hidden_proto (__fileno)
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243libc_hidden_proto (fwrite)
244libc_hidden_proto (fseek)
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245extern __typeof (ftello) __ftello;
246libc_hidden_proto (__ftello)
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247extern __typeof (fseeko64) __fseeko64;
248libc_hidden_proto (__fseeko64)
249extern __typeof (ftello64) __ftello64;
250libc_hidden_proto (__ftello64)
5182cbc5 251libc_hidden_proto (fflush)
3ba06713 252libc_hidden_proto (fflush_unlocked)
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253extern __typeof (fflush_unlocked) __fflush_unlocked;
254libc_hidden_proto (__fflush_unlocked)
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255extern __typeof (fread_unlocked) __fread_unlocked;
256libc_hidden_proto (__fread_unlocked)
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257libc_hidden_proto (fwrite_unlocked)
258libc_hidden_proto (fgets_unlocked)
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259extern __typeof (fgets_unlocked) __fgets_unlocked;
260libc_hidden_proto (__fgets_unlocked)
3ba06713 261libc_hidden_proto (fputs_unlocked)
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262extern __typeof (fputs_unlocked) __fputs_unlocked;
263libc_hidden_proto (__fputs_unlocked)
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264libc_hidden_proto (feof_unlocked)
265extern __typeof (feof_unlocked) __feof_unlocked attribute_hidden;
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266libc_hidden_proto (ferror_unlocked)
267extern __typeof (ferror_unlocked) __ferror_unlocked attribute_hidden;
30ac923d 268libc_hidden_proto (getc_unlocked)
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269libc_hidden_proto (fputc_unlocked)
270libc_hidden_proto (putc_unlocked)
271extern __typeof (putc_unlocked) __putc_unlocked attribute_hidden;
a99e59d7 272libc_hidden_proto (fmemopen)
711f67a7 273/* The prototype needs repeating instead of using __typeof to use
3ac3ff32 274 __THROW in C++ tests. */
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275extern FILE *__open_memstream (char **, size_t *) __THROW __wur;
276libc_hidden_proto (__open_memstream)
9d79e037 277libc_hidden_proto (__libc_fatal)
2193ce87 278rtld_hidden_proto (__libc_fatal)
b5cc329c 279libc_hidden_proto (__vsprintf_chk)
b15549e6 280
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281extern FILE * __fmemopen (void *buf, size_t len, const char *mode);
282libc_hidden_proto (__fmemopen)
283
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284extern int __gen_tempfd (int flags);
285libc_hidden_proto (__gen_tempfd)
286
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287# ifdef __USE_EXTERN_INLINES
288__extern_inline int
289__NTH (__feof_unlocked (FILE *__stream))
290{
291 return __feof_unlocked_body (__stream);
292}
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293
294__extern_inline int
295__NTH (__ferror_unlocked (FILE *__stream))
296{
297 return __ferror_unlocked_body (__stream);
298}
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299
300__extern_inline int
301__getc_unlocked (FILE *__fp)
302{
303 return __getc_unlocked_body (__fp);
304}
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305
306__extern_inline int
307__putc_unlocked (int __c, FILE *__stream)
308{
309 return __putc_unlocked_body (__c, __stream);
310}
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311# endif
312
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313extern __typeof (renameat) __renameat;
314libc_hidden_proto (__renameat)
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315extern __typeof (renameat2) __renameat2;
316libc_hidden_proto (__renameat2)
d6da5cb6 317
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318# endif /* not _ISOMAC */
319#endif /* stdio.h */