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
  98 libc_hidden_proto (__isoc99_sscanf)
  99 libc_hidden_proto (__isoc99_vsscanf)
 100 libc_hidden_proto (__isoc99_vfscanf)
 101
 102 /* Internal uses of sscanf should call the C99-compliant version.
 103    Unfortunately, symbol redirection is not transitive, so the
 104    __REDIRECT in the public header does not link up with the above
 105    libc_hidden_proto.  Bridge the gap with a macro.  */
 106 #  if !__GLIBC_USE (DEPRECATED_SCANF)
 107 #   undef sscanf
 108 #   define sscanf __isoc99_sscanf
 109 #  endif
 110
 111 #  if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1  && IS_IN (libc)
 112 /* These are implemented as redirects to other public API.
 113    Therefore, the usual redirection fails to avoid PLT.  */
 114 extern __typeof (__isoc99_sscanf) ___ieee128_isoc99_sscanf __THROW;
 115 extern __typeof (__isoc99_vsscanf) ___ieee128_isoc99_vsscanf __THROW;
 116 extern __typeof (__isoc99_vfscanf) ___ieee128_isoc99_vfscanf __THROW;
 117 libc_hidden_proto (___ieee128_isoc99_sscanf)
 118 libc_hidden_proto (___ieee128_isoc99_vsscanf)
 119 libc_hidden_proto (___ieee128_isoc99_vfscanf)
 120 #define __isoc99_sscanf ___ieee128_isoc99_sscanf
 121 #define __isoc99_vsscanf ___ieee128_isoc99_vsscanf
 122 #define __isoc99_vfscanf ___ieee128_isoc99_vfscanf
 123 #  endif
 124
 125 /* Prototypes for compatibility functions.  */
 126 extern FILE *__new_tmpfile (void);
 127 extern FILE *__old_tmpfile (void);
 128
 129 #  define __need_size_t
 130 #  include <stddef.h>
 131
 132 #  include <bits/types/wint_t.h>
 133
 134 /* Generate a unique file name (and possibly open it).  */
 135 extern int __path_search (char *__tmpl, size_t __tmpl_len,
 136                           const char *__dir, const char *__pfx,
 137                           int __try_tempdir) attribute_hidden;
 138
 139 extern int __gen_tempname (char *__tmpl, int __suffixlen, int __flags,
 140                            int __kind) attribute_hidden;
 141 /* The __kind argument to __gen_tempname may be one of: */
 142 #  define __GT_FILE     0       /* create a file */
 143 #  define __GT_DIR      1       /* create a directory */
 144 #  define __GT_NOCREATE 2       /* just find a name not currently in use */
 145
 146 enum __libc_message_action
 147 {
 148   do_message    = 0,            /* Print message.  */
 149   do_abort      = 1 << 0,       /* Abort.  */
 150 };
 151
 152 /* Print out MESSAGE (which should end with a newline) on the error output
 153    and abort.  */
 154 extern void __libc_fatal (const char *__message)
 155      __attribute__ ((__noreturn__));
 156 extern void __libc_message (enum __libc_message_action action,
 157                             const char *__fnt, ...) attribute_hidden;
 158 extern void __fortify_fail (const char *msg) __attribute__ ((__noreturn__));
 159 libc_hidden_proto (__fortify_fail)
 160
 161 /* Acquire ownership of STREAM.  */
 162 extern void __flockfile (FILE *__stream) attribute_hidden;
 163
 164 /* Relinquish the ownership granted for STREAM.  */
 165 extern void __funlockfile (FILE *__stream) attribute_hidden;
 166
 167 /* Try to acquire ownership of STREAM but do not block if it is not
 168    possible.  */
 169 extern int __ftrylockfile (FILE *__stream);
 170
 171 extern int __getc_unlocked (FILE *__fp) attribute_hidden;
 172 extern wint_t __getwc_unlocked (FILE *__fp);
 173
 174 extern int __fxprintf (FILE *__fp, const char *__fmt, ...)
 175      __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
 176 extern int __fxprintf_nocancel (FILE *__fp, const char *__fmt, ...)
 177      __attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
 178 int __vfxprintf (FILE *__fp, const char *__fmt, __gnuc_va_list,
 179                  unsigned int)
 180   attribute_hidden;
 181
 182 extern const char *const _sys_errlist_internal[] attribute_hidden;
 183 extern const char *__get_errlist (int) attribute_hidden;
 184 extern const char *__get_errname (int) attribute_hidden;
 185
 186 libc_hidden_ldbl_proto (__asprintf)
 187
 188 #  if IS_IN (libc)
 189 extern FILE *_IO_new_fopen (const char*, const char*);
 190 #   define fopen(fname, mode) _IO_new_fopen (fname, mode)
 191 extern FILE *_IO_new_fdopen (int, const char*);
 192 #   define fdopen(fd, mode) _IO_new_fdopen (fd, mode)
 193 extern int _IO_new_fclose (FILE*);
 194 #   define fclose(fp) _IO_new_fclose (fp)
 195 extern int _IO_fputs (const char*, FILE*);
 196 libc_hidden_proto (_IO_fputs)
 197 /* The compiler may optimize calls to fprintf into calls to fputs.
 198    Use libc_hidden_proto to ensure that those calls, not redirected by
 199    the fputs macro, also do not go through the PLT.  */
 200 libc_hidden_proto (fputs)
 201 #   define fputs(str, fp) _IO_fputs (str, fp)
 202 extern int _IO_new_fsetpos (FILE *, const __fpos_t *);
 203 #   define fsetpos(fp, posp) _IO_new_fsetpos (fp, posp)
 204 extern int _IO_new_fgetpos (FILE *, __fpos_t *);
 205 #   define fgetpos(fp, posp) _IO_new_fgetpos (fp, posp)
 206 #  endif
 207
 208 extern __typeof (dprintf) __dprintf
 209      __attribute__ ((__format__ (__printf__, 2, 3)));
 210 stdio_hidden_ldbl_proto (__, dprintf)
 211 libc_hidden_ldbl_proto (dprintf)
 212 libc_hidden_ldbl_proto (fprintf)
 213 libc_hidden_ldbl_proto (vfprintf)
 214 libc_hidden_ldbl_proto (sprintf)
 215 libc_hidden_proto (ungetc)
 216 libc_hidden_proto (__getdelim)
 217 libc_hidden_proto (fwrite)
 218 libc_hidden_proto (perror)
 219 libc_hidden_proto (remove)
 220 libc_hidden_proto (rewind)
 221 libc_hidden_proto (fileno)
 222 extern __typeof (fileno) __fileno;
 223 libc_hidden_proto (__fileno)
 224 libc_hidden_proto (fwrite)
 225 libc_hidden_proto (fseek)
 226 extern __typeof (ftello) __ftello;
 227 libc_hidden_proto (__ftello)
 228 extern __typeof (fseeko64) __fseeko64;
 229 libc_hidden_proto (__fseeko64)
 230 extern __typeof (ftello64) __ftello64;
 231 libc_hidden_proto (__ftello64)
 232 libc_hidden_proto (fflush)
 233 libc_hidden_proto (fflush_unlocked)
 234 extern __typeof (fflush_unlocked) __fflush_unlocked;
 235 libc_hidden_proto (__fflush_unlocked)
 236 extern __typeof (fread_unlocked) __fread_unlocked;
 237 libc_hidden_proto (__fread_unlocked)
 238 libc_hidden_proto (fwrite_unlocked)
 239 libc_hidden_proto (fgets_unlocked)
 240 extern __typeof (fgets_unlocked) __fgets_unlocked;
 241 libc_hidden_proto (__fgets_unlocked)
 242 libc_hidden_proto (fputs_unlocked)
 243 extern __typeof (fputs_unlocked) __fputs_unlocked;
 244 libc_hidden_proto (__fputs_unlocked)
 245 libc_hidden_proto (feof_unlocked)
 246 extern __typeof (feof_unlocked) __feof_unlocked attribute_hidden;
 247 libc_hidden_proto (ferror_unlocked)
 248 extern __typeof (ferror_unlocked) __ferror_unlocked attribute_hidden;
 249 libc_hidden_proto (getc_unlocked)
 250 libc_hidden_proto (fputc_unlocked)
 251 libc_hidden_proto (putc_unlocked)
 252 extern __typeof (putc_unlocked) __putc_unlocked attribute_hidden;
 253 libc_hidden_proto (fmemopen)
 254 /* The prototype needs repeating instead of using __typeof to use
 255    __THROW in C++ tests.  */
 256 extern FILE *__open_memstream (char **, size_t *) __THROW __wur;
 257 libc_hidden_proto (__open_memstream)
 258 libc_hidden_proto (__libc_fatal)
 259 rtld_hidden_proto (__libc_fatal)
 260 libc_hidden_proto (__vsprintf_chk)
 261
 262 extern FILE * __fmemopen (void *buf, size_t len, const char *mode);
 263 libc_hidden_proto (__fmemopen)
 264
 265 extern int __gen_tempfd (int flags);
 266 libc_hidden_proto (__gen_tempfd)
 267
 268 #  ifdef __USE_EXTERN_INLINES
 269 __extern_inline int
 270 __NTH (__feof_unlocked (FILE *__stream))
 271 {
 272   return __feof_unlocked_body (__stream);
 273 }
 274
 275 __extern_inline int
 276 __NTH (__ferror_unlocked (FILE *__stream))
 277 {
 278   return __ferror_unlocked_body (__stream);
 279 }
 280
 281 __extern_inline int
 282 __getc_unlocked (FILE *__fp)
 283 {
 284   return __getc_unlocked_body (__fp);
 285 }
 286
 287 __extern_inline int
 288 __putc_unlocked (int __c, FILE *__stream)
 289 {
 290   return __putc_unlocked_body (__c, __stream);
 291 }
 292 #  endif
 293
 294 extern __typeof (renameat) __renameat;
 295 libc_hidden_proto (__renameat)
 296 extern __typeof (renameat2) __renameat2;
 297 libc_hidden_proto (__renameat2)
 298
 299 # endif /* not _ISOMAC */
 300 #endif /* stdio.h */