include/stdio.h

   1 #ifndef _STDIO_H
   2 # if !defined _ISOMAC && defined _IO_MTSAFE_IO
   3 #  include <stdio-lock.h>
   4 # endif
   5
   6 /* Workaround PR90731 with GCC 9 when using ldbl redirects in C++.  */
   7 # include <bits/floatn.h>
   8 # if defined __cplusplus && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
   9 #  if __GNUC_PREREQ (9, 0) && !__GNUC_PREREQ (9, 3)
  10 #    pragma GCC system_header
  11 #  endif
  12 # endif
  13
  14 # include <libio/stdio.h>
  15 # ifndef _ISOMAC
  16
  17 #  define _LIBC_STDIO_H 1
  18 #  include <libio/libio.h>
  19
  20 /* Now define the internal interfaces.  */
  21
  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.  */
  25 # if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 && IS_IN (libc)
  26 #  define stdio_hidden_ldbl_proto(p, f) \
  27   extern __typeof (p ## f) p ## f __asm (__ASMNAME ("___ieee128_" #f));
  28 # elif __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
  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
  34 /* Set the error indicator on FP.  */
  35 static inline void
  36 fseterr_unlocked (FILE *fp)
  37 {
  38   fp->_flags |= _IO_ERR_SEEN;
  39 }
  40
  41 extern int __fcloseall (void) attribute_hidden;
  42 extern int __snprintf (char *__restrict __s, size_t __maxlen,
  43                        const char *__restrict __format, ...)
  44      __attribute__ ((__format__ (__printf__, 3, 4)));
  45 stdio_hidden_ldbl_proto (__, snprintf)
  46
  47 extern int __vfscanf (FILE *__restrict __s,
  48                       const char *__restrict __format,
  49                       __gnuc_va_list __arg)
  50      __attribute__ ((__format__ (__scanf__, 2, 0)));
  51 libc_hidden_proto (__vfscanf)
  52 extern int __vscanf (const char *__restrict __format,
  53                      __gnuc_va_list __arg)
  54      __attribute__ ((__format__ (__scanf__, 1, 0)));
  55 extern __ssize_t __getline (char **__lineptr, size_t *__n,
  56                             FILE *__stream) attribute_hidden;
  57 extern int __vsscanf (const char *__restrict __s,
  58                       const char *__restrict __format,
  59                       __gnuc_va_list __arg)
  60      __attribute__ ((__format__ (__scanf__, 2, 0)));
  61
  62 extern int __sprintf_chk (char *, int, size_t, const char *, ...) __THROW;
  63 extern int __snprintf_chk (char *, size_t, int, size_t, const char *, ...)
  64      __THROW;
  65 extern int __vsprintf_chk (char *, int, size_t, const char *,
  66                            __gnuc_va_list) __THROW;
  67 extern int __vsnprintf_chk (char *, size_t, int, size_t, const char *,
  68                             __gnuc_va_list) __THROW;
  69 extern int __printf_chk (int, const char *, ...);
  70 extern int __fprintf_chk (FILE *, int, const char *, ...);
  71 extern int __vprintf_chk (int, const char *, __gnuc_va_list);
  72 extern int __vfprintf_chk (FILE *, int, const char *, __gnuc_va_list);
  73 extern char *__fgets_unlocked_chk (char *buf, size_t size, int n, FILE *fp);
  74 extern char *__fgets_chk (char *buf, size_t size, int n, FILE *fp);
  75 extern int __asprintf_chk (char **, int, const char *, ...) __THROW;
  76 extern int __vasprintf_chk (char **, int, const char *, __gnuc_va_list) __THROW;
  77 extern int __dprintf_chk (int, int, const char *, ...);
  78 extern int __vdprintf_chk (int, int, const char *, __gnuc_va_list);
  79 extern int __obstack_printf_chk (struct obstack *, int, const char *, ...)
  80      __THROW;
  81 extern int __obstack_vprintf_chk (struct obstack *, int, const char *,
  82                                   __gnuc_va_list) __THROW;
  83
  84 extern int __isoc99_fscanf (FILE *__restrict __stream,
  85                             const char *__restrict __format, ...) __wur;
  86 extern int __isoc99_scanf (const char *__restrict __format, ...) __wur;
  87 extern int __isoc99_sscanf (const char *__restrict __s,
  88                             const char *__restrict __format, ...) __THROW;
  89 extern int __isoc99_vfscanf (FILE *__restrict __s,
  90                              const char *__restrict __format,
  91                              __gnuc_va_list __arg) __wur;
  92 extern int __isoc99_vscanf (const char *__restrict __format,
  93                             __gnuc_va_list __arg) __wur;
  94 extern int __isoc99_vsscanf (const char *__restrict __s,
  95                              const char *__restrict __format,
  96                              __gnuc_va_list __arg) __THROW;
  97 extern int __isoc23_fscanf (FILE *__restrict __stream,
  98                             const char *__restrict __format, ...) __wur;
  99 extern int __isoc23_scanf (const char *__restrict __format, ...) __wur;
 100 extern int __isoc23_sscanf (const char *__restrict __s,
 101                             const char *__restrict __format, ...) __THROW;
 102 extern int __isoc23_vfscanf (FILE *__restrict __s,
 103                              const char *__restrict __format,
 104                              __gnuc_va_list __arg) __wur;
 105 extern int __isoc23_vscanf (const char *__restrict __format,
 106                             __gnuc_va_list __arg) __wur;
 107 extern int __isoc23_vsscanf (const char *__restrict __s,
 108                              const char *__restrict __format,
 109                              __gnuc_va_list __arg) __THROW;
 110
 111 libc_hidden_proto (__isoc99_sscanf)
 112 libc_hidden_proto (__isoc99_vsscanf)
 113 libc_hidden_proto (__isoc99_vfscanf)
 114 libc_hidden_proto (__isoc23_sscanf)
 115 libc_hidden_proto (__isoc23_vsscanf)
 116 libc_hidden_proto (__isoc23_vfscanf)
 117
 118 /* Internal uses of sscanf should call the C23-compliant version.
 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.  */
 122 #  if !__GLIBC_USE (DEPRECATED_SCANF)
 123 #   undef sscanf
 124 #   define sscanf __isoc23_sscanf
 125 #  endif
 126
 127 #  if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1  && IS_IN (libc)
 128 /* These are implemented as redirects to other public API.
 129    Therefore, the usual redirection fails to avoid PLT.  */
 130 extern __typeof (__isoc99_sscanf) ___ieee128_isoc99_sscanf __THROW;
 131 extern __typeof (__isoc99_vsscanf) ___ieee128_isoc99_vsscanf __THROW;
 132 extern __typeof (__isoc99_vfscanf) ___ieee128_isoc99_vfscanf __THROW;
 133 extern __typeof (__isoc23_sscanf) ___ieee128_isoc23_sscanf __THROW;
 134 extern __typeof (__isoc23_vsscanf) ___ieee128_isoc23_vsscanf __THROW;
 135 extern __typeof (__isoc23_vfscanf) ___ieee128_isoc23_vfscanf __THROW;
 136 libc_hidden_proto (___ieee128_isoc99_sscanf)
 137 libc_hidden_proto (___ieee128_isoc99_vsscanf)
 138 libc_hidden_proto (___ieee128_isoc99_vfscanf)
 139 libc_hidden_proto (___ieee128_isoc23_sscanf)
 140 libc_hidden_proto (___ieee128_isoc23_vsscanf)
 141 libc_hidden_proto (___ieee128_isoc23_vfscanf)
 142 #define __isoc99_sscanf ___ieee128_isoc99_sscanf
 143 #define __isoc99_vsscanf ___ieee128_isoc99_vsscanf
 144 #define __isoc99_vfscanf ___ieee128_isoc99_vfscanf
 145 #define __isoc23_sscanf ___ieee128_isoc23_sscanf
 146 #define __isoc23_vsscanf ___ieee128_isoc23_vsscanf
 147 #define __isoc23_vfscanf ___ieee128_isoc23_vfscanf
 148 #  endif
 149
 150 /* Prototypes for compatibility functions.  */
 151 extern FILE *__new_tmpfile (void);
 152 extern FILE *__old_tmpfile (void);
 153
 154 #  define __need_size_t
 155 #  include <stddef.h>
 156
 157 #  include <bits/types/wint_t.h>
 158
 159 /* Generate a unique file name (and possibly open it).  */
 160 extern int __path_search (char *__tmpl, size_t __tmpl_len,
 161                           const char *__dir, const char *__pfx,
 162                           int __try_tempdir) attribute_hidden;
 163
 164 extern int __gen_tempname (char *__tmpl, int __suffixlen, int __flags,
 165                            int __kind) attribute_hidden;
 166 /* The __kind argument to __gen_tempname may be one of: */
 167 #  define __GT_FILE     0       /* create a file */
 168 #  define __GT_DIR      1       /* create a directory */
 169 #  define __GT_NOCREATE 2       /* just find a name not currently in use */
 170
 171 /* Print out MESSAGE (which should end with a newline) on the error output
 172    and abort.  */
 173 extern void __libc_fatal (const char *__message)
 174      __attribute__ ((__noreturn__));
 175 extern void __fortify_fail (const char *msg) __attribute__ ((__noreturn__));
 176 libc_hidden_proto (__fortify_fail)
 177
 178 /* The maximum number of varargs allowed in a __libc_message format string */
 179 #define LIBC_MESSAGE_MAX_ARGS 4
 180
 181 _Noreturn void __libc_message_impl (const char *__fnt, ...) attribute_hidden
 182      __attribute__ ((__format__ (__printf__, 1, 2)));
 183
 184 #define __libc_message0(fmt) \
 185    __libc_message_impl (fmt)
 186 #define __libc_message1(fmt, a1) \
 187    __libc_message_impl (fmt, a1)
 188 #define __libc_message2(fmt, a1, a2) \
 189    __libc_message_impl (fmt, a1, a2)
 190 #define __libc_message3(fmt, a1, a2, a3) \
 191    __libc_message_impl (fmt, a1, a2, a3)
 192 #define __libc_message4(fmt, a1, a2, a3, a4) \
 193    __libc_message_impl (fmt, a1, a2, a3, a4)
 194
 195 #define __libc_message_concat_x(a,b)  a##b
 196 #define __libc_message_concat(a,b)    __libc_message_concat_x (a, b)
 197
 198 #define __libc_message_nargs_x(a0,a1,a2,a3,a4,a5,a6,...) a6
 199 #define __libc_message_nargs(b, ...) \
 200    __libc_message_nargs_x (__VA_ARGS__,6,5,4,3,2,1,0,)
 201 #define __libc_message_disp(b, ...) \
 202    __libc_message_concat (b, __libc_message_nargs (__VA_ARGS__))(__VA_ARGS__)
 203 #define __libc_message(...) \
 204    __libc_message_disp (__libc_message, __VA_ARGS__)
 205
 206 /* Acquire ownership of STREAM.  */
 207 extern void __flockfile (FILE *__stream) attribute_hidden;
 208
 209 /* Relinquish the ownership granted for STREAM.  */
 210 extern void __funlockfile (FILE *__stream) attribute_hidden;
 211
 212 /* Try to acquire ownership of STREAM but do not block if it is not
 213    possible.  */
 214 extern int __ftrylockfile (FILE *__stream);
 215
 216 extern int __getc_unlocked (FILE *__fp) attribute_hidden;
 217 extern wint_t __getwc_unlocked (FILE *__fp);
 218
 219 extern int __fxprintf (FILE *__fp, const char *__fmt, ...)
 220      __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
 221 extern int __fxprintf_nocancel (FILE *__fp, const char *__fmt, ...)
 222      __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
 223 int __vfxprintf (FILE *__fp, const char *__fmt, __gnuc_va_list,
 224                  unsigned int)
 225   attribute_hidden;
 226
 227 extern const char *const _sys_errlist_internal[] attribute_hidden;
 228 extern const size_t _sys_errlist_internal_len attribute_hidden;
 229 extern const char *__get_errlist (int) attribute_hidden;
 230 extern const char *__get_errname (int) attribute_hidden;
 231
 232 libc_hidden_ldbl_proto (__asprintf)
 233
 234 #  if IS_IN (libc)
 235 extern FILE *_IO_new_fopen (const char*, const char*);
 236 #   define fopen(fname, mode) _IO_new_fopen (fname, mode)
 237 extern FILE *_IO_new_fdopen (int, const char*);
 238 #   define fdopen(fd, mode) _IO_new_fdopen (fd, mode)
 239 extern int _IO_new_fclose (FILE*);
 240 #   define fclose(fp) _IO_new_fclose (fp)
 241 extern int _IO_fputs (const char*, FILE*);
 242 libc_hidden_proto (_IO_fputs)
 243 /* The compiler may optimize calls to fprintf into calls to fputs.
 244    Use libc_hidden_proto to ensure that those calls, not redirected by
 245    the fputs macro, also do not go through the PLT.  */
 246 libc_hidden_proto (fputs)
 247 #   define fputs(str, fp) _IO_fputs (str, fp)
 248 extern int _IO_new_fsetpos (FILE *, const __fpos_t *);
 249 #   define fsetpos(fp, posp) _IO_new_fsetpos (fp, posp)
 250 extern int _IO_new_fgetpos (FILE *, __fpos_t *);
 251 #   define fgetpos(fp, posp) _IO_new_fgetpos (fp, posp)
 252 #  endif
 253
 254 extern __typeof (dprintf) __dprintf
 255      __attribute__ ((__format__ (__printf__, 2, 3)));
 256 stdio_hidden_ldbl_proto (__, dprintf)
 257 libc_hidden_ldbl_proto (dprintf)
 258 libc_hidden_ldbl_proto (fprintf)
 259 libc_hidden_ldbl_proto (vfprintf)
 260 libc_hidden_ldbl_proto (sprintf)
 261 libc_hidden_proto (ungetc)
 262 libc_hidden_proto (__getdelim)
 263 libc_hidden_proto (fwrite)
 264 libc_hidden_proto (perror)
 265 libc_hidden_proto (remove)
 266 libc_hidden_proto (rewind)
 267 libc_hidden_proto (fileno)
 268 extern __typeof (fileno) __fileno;
 269 libc_hidden_proto (__fileno)
 270 libc_hidden_proto (fwrite)
 271 libc_hidden_proto (fseek)
 272 extern __typeof (ftello) __ftello;
 273 libc_hidden_proto (__ftello)
 274 extern __typeof (fseeko64) __fseeko64;
 275 libc_hidden_proto (__fseeko64)
 276 extern __typeof (ftello64) __ftello64;
 277 libc_hidden_proto (__ftello64)
 278 libc_hidden_proto (fflush)
 279 libc_hidden_proto (fflush_unlocked)
 280 extern __typeof (fflush_unlocked) __fflush_unlocked;
 281 libc_hidden_proto (__fflush_unlocked)
 282 extern __typeof (fread_unlocked) __fread_unlocked;
 283 libc_hidden_proto (__fread_unlocked)
 284 libc_hidden_proto (fwrite_unlocked)
 285 libc_hidden_proto (fgets_unlocked)
 286 extern __typeof (fgets_unlocked) __fgets_unlocked;
 287 libc_hidden_proto (__fgets_unlocked)
 288 libc_hidden_proto (fputs_unlocked)
 289 extern __typeof (fputs_unlocked) __fputs_unlocked;
 290 libc_hidden_proto (__fputs_unlocked)
 291 libc_hidden_proto (feof_unlocked)
 292 extern __typeof (feof_unlocked) __feof_unlocked attribute_hidden;
 293 libc_hidden_proto (ferror_unlocked)
 294 extern __typeof (ferror_unlocked) __ferror_unlocked attribute_hidden;
 295 libc_hidden_proto (getc_unlocked)
 296 libc_hidden_proto (fputc_unlocked)
 297 libc_hidden_proto (putc_unlocked)
 298 extern __typeof (putc_unlocked) __putc_unlocked attribute_hidden;
 299 libc_hidden_proto (fmemopen)
 300 /* The prototype needs repeating instead of using __typeof to use
 301    __THROW in C++ tests.  */
 302 extern FILE *__open_memstream (char **, size_t *) __THROW __wur;
 303 libc_hidden_proto (__open_memstream)
 304 libc_hidden_proto (__libc_fatal)
 305 rtld_hidden_proto (__libc_fatal)
 306
 307 libc_hidden_proto (__fgets_unlocked_chk)
 308
 309 #if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
 310 libc_hidden_ldbl_proto (__asprintf_chk)
 311 #else
 312 libc_hidden_proto (__asprintf_chk)
 313 #endif
 314
 315 libc_hidden_ldbl_proto (__fprintf_chk)
 316 libc_hidden_ldbl_proto (__sprintf_chk)
 317 libc_hidden_ldbl_proto (__vsprintf_chk)
 318
 319 extern FILE * __fmemopen (void *buf, size_t len, const char *mode);
 320 libc_hidden_proto (__fmemopen)
 321
 322 extern int __gen_tempfd (int flags);
 323 libc_hidden_proto (__gen_tempfd)
 324
 325 #  ifdef __USE_EXTERN_INLINES
 326 __extern_inline int
 327 __NTH (__feof_unlocked (FILE *__stream))
 328 {
 329   return __feof_unlocked_body (__stream);
 330 }
 331
 332 __extern_inline int
 333 __NTH (__ferror_unlocked (FILE *__stream))
 334 {
 335   return __ferror_unlocked_body (__stream);
 336 }
 337
 338 __extern_inline int
 339 __getc_unlocked (FILE *__fp)
 340 {
 341   return __getc_unlocked_body (__fp);
 342 }
 343
 344 __extern_inline int
 345 __putc_unlocked (int __c, FILE *__stream)
 346 {
 347   return __putc_unlocked_body (__c, __stream);
 348 }
 349 #  endif
 350
 351 extern __typeof (renameat) __renameat;
 352 libc_hidden_proto (__renameat)
 353 extern __typeof (renameat2) __renameat2;
 354 libc_hidden_proto (__renameat2)
 355
 356 # endif /* not _ISOMAC */
 357 #endif /* stdio.h */