sysdeps/stub/sysd-stdio.c

   1 /* Copyright (C) 1991, 92, 93, 94, 95, 96 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 <errno.h>
  20 #include <stdio.h>
  21
  22
  23 /* Read up to N chars into BUF from COOKIE.
  24    Return how many chars were read, 0 for EOF or -1 for error.  */
  25 int
  26 __stdio_read (cookie, buf, n)
  27      void *cookie;
  28      register char *buf;
  29      register size_t n;
  30 {
  31   __set_errno (ENOSYS);
  32   return -1;
  33 }
  34
  35 /* Write up to N chars from BUF to COOKIE.
  36    Return how many chars were written or -1 for error.  */
  37 int
  38 __stdio_write (cookie, buf, n)
  39      void *cookie;
  40      register const char *buf;
  41      register size_t n;
  42 {
  43   __set_errno (ENOSYS);
  44   return -1;
  45 }
  46
  47 /* Move COOKIE's file position *POS bytes, according to WHENCE.
  48    The new file position is stored in *POS.
  49    Returns zero if successful, nonzero if not.  */
  50 int
  51 __stdio_seek (cookie, pos, whence)
  52      void *cookie;
  53      fpos_t *pos;
  54      int whence;
  55 {
  56   __set_errno (ENOSYS);
  57   return -1;
  58 }
  59
  60 /* Close the file associated with COOKIE.
  61    Return 0 for success or -1 for failure.  */
  62 int
  63 __stdio_close (cookie)
  64       void *cookie;
  65 {
  66   __set_errno (ENOSYS);
  67   return -1;
  68 }
  69
  70 /* Return the POSIX.1 file descriptor associated with COOKIE,
  71    or -1 for errors.  If COOKIE does not relate to any POSIX.1 file
  72    descriptor, this should return -1 with errno set to EOPNOTSUPP.  */
  73 int
  74 __stdio_fileno (cookie)
  75      void *cookie;
  76 {
  77   __set_errno (ENOSYS);
  78   return -1;
  79 }
  80
  81
  82 /* Open FILENAME with the mode in M.
  83    Store the magic cookie associated with the opened file in *COOKIEPTR.
  84    Return zero on success and nonzero on failure.  */
  85 int
  86 __stdio_open (filename, m, cookieptr)
  87      const char *filename;
  88      __io_mode m;
  89      void **cookieptr;
  90 {
  91   __set_errno (ENOSYS);
  92   return -1;
  93 }
  94
  95
  96 /* Open FILENAME with the mode in M.  Use the same magic cookie
  97    already in *COOKIEPTR if possible, closing the old cookie with CLOSEFN.  */
  98 int
  99 __stdio_reopen (filename, m, cookieptr)
 100      const char *filename;
 101      __io_mode m;
 102      void **cookieptr;
 103      __io_close_fn closefn;
 104 {
 105   __set_errno (ENOSYS);
 106   return -1;
 107 }
 108
 109
 110 stub_warning (__stdio_read)
 111 stub_warning (__stdio_write)
 112 stub_warning (__stdio_seek)
 113 stub_warning (__stdio_close)
 114 stub_warning (__stdio_fileno)
 115 stub_warning (__stdio_open)
 116 stub_warning (__stdio_reopen)