sysdeps/stub/sysd-stdio.c

   1 /* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   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
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <stdio.h>
  22
  23
  24 /* Read up to N chars into BUF from COOKIE.
  25    Return how many chars were read, 0 for EOF or -1 for error.  */
  26 int
  27 DEFUN(__stdio_read, (cookie, buf, n),
  28       PTR cookie AND register char *buf AND register size_t n)
  29 {
  30   errno = ENOSYS;
  31   return -1;
  32 }
  33
  34 /* Write up to N chars from BUF to COOKIE.
  35    Return how many chars were written or -1 for error.  */
  36 int
  37 DEFUN(__stdio_write, (cookie, buf, n),
  38       PTR cookie AND register CONST char *buf AND register size_t n)
  39 {
  40   errno = ENOSYS;
  41   return -1;
  42 }
  43
  44 /* Move COOKIE's file position *POS bytes, according to WHENCE.
  45    The new file position is stored in *POS.
  46    Returns zero if successful, nonzero if not.  */
  47 int
  48 DEFUN(__stdio_seek, (cookie, pos, whence),
  49       PTR cookie AND fpos_t *pos AND int whence)
  50 {
  51   errno = ENOSYS;
  52   return -1;
  53 }
  54
  55 /* Close the file associated with COOKIE.
  56    Return 0 for success or -1 for failure.  */
  57 int
  58 DEFUN(__stdio_close, (cookie), PTR cookie)
  59 {
  60   errno = ENOSYS;
  61   return -1;
  62 }
  63
  64 /* Return the POSIX.1 file descriptor associated with COOKIE,
  65    or -1 for errors.  If COOKIE does not relate to any POSIX.1 file
  66    descriptor, this should return -1 with errno set to EOPNOTSUPP.  */
  67 int
  68 DEFUN(__stdio_fileno, (cookie), PTR cookie)
  69 {
  70   errno = ENOSYS;
  71   return -1;
  72 }
  73
  74
  75 /* Open FILENAME with the mode in M.
  76    Store the magic cookie associated with the opened file in *COOKIEPTR.
  77    Return zero on success and nonzero on failure.  */
  78 int
  79 DEFUN(__stdio_open, (filename, m, cookieptr),
  80       CONST char *filename AND __io_mode m AND PTR *cookieptr)
  81 {
  82   errno = ENOSYS;
  83   return -1;
  84 }
  85
  86
  87 /* Open FILENAME with the mode in M.  Use the same magic cookie
  88    already in *COOKIEPTR if possible, closing the old cookie with CLOSEFN.  */
  89 int
  90 DEFUN(__stdio_reopen, (filename, m, cookieptr),
  91       CONST char *filename AND __io_mode m AND
  92       PTR *cookieptr AND __io_close_fn closefn)
  93 {
  94   errno = ENOSYS;
  95   return -1;
  96 }
  97
  98
  99 #ifdef   HAVE_GNU_LD
 100
 101 #include <gnu-stabs.h>
 102
 103 stub_warning(__stdio_read);
 104 stub_warning(__stdio_write);
 105 stub_warning(__stdio_seek);
 106 stub_warning(__stdio_close);
 107 stub_warning(__stdio_fileno);
 108 stub_warning(__stdio_open);
 109 stub_warning(__stdio_reopen);
 110
 111 #endif  /* GNU stabs.  */