toolchain/gcc/newlib/libc/stdio64/stdio64.c

   1 /* No user fns here.  Pesch 15apr92. */
   2
   3 /*
   4  * Copyright (c) 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms are permitted
   8  * provided that the above copyright notice and this paragraph are
   9  * duplicated in all such forms and that any documentation,
  10  * advertising materials, and other materials related to such
  11  * distribution and use acknowledge that the software was developed
  12  * by the University of California, Berkeley.  The name of the
  13  * University may not be used to endorse or promote products derived
  14  * from this software without specific prior written permission.
  15  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  18  */
  19
  20 #include <stdio.h>
  21 #include <sys/types.h>
  22 #include <fcntl.h>
  23 #include <sys/unistd.h>
  24 #include <errno.h>
  25 #include "local.h"
  26
  27 #ifdef __LARGE64_FILES
  28 _fpos64_t
  29 __sseek64_r (ptr, cookie, offset, whence)
  30      struct _reent *ptr;
  31      _PTR cookie;
  32      _fpos64_t offset;
  33      int whence;
  34 {
  35   register FILE *fp = (FILE *) cookie;
  36   register _off64_t ret;
  37
  38   ret = _lseek64_r (ptr, fp->_file, (_off64_t) offset, whence);
  39   if (ret == (_fpos64_t)-1L)
  40     fp->_flags &= ~__SOFF;
  41   else
  42     {
  43       fp->_flags |= __SOFF;
  44       fp->_offset = ret;
  45     }
  46   return ret;
  47 }
  48
  49 _READ_WRITE_RETURN_TYPE
  50 __swrite64_r (ptr, cookie, buf, n)
  51      struct _reent *ptr;
  52      _PTR cookie;
  53      char _CONST *buf;
  54      int n;
  55 {
  56   register FILE *fp = (FILE *) cookie;
  57   int w;
  58 #ifdef __SCLE
  59   int oldmode=0;
  60 #endif
  61
  62   if (fp->_flags & __SAPP)
  63     (void) _lseek64_r (ptr, fp->_file, (_off64_t)0, SEEK_END);
  64   fp->_flags &= ~__SOFF;        /* in case O_APPEND mode is set */
  65
  66 #ifdef __SCLE
  67   if (fp->_flags & __SCLE)
  68     oldmode = setmode(fp->_file, O_BINARY);
  69 #endif
  70
  71   w = _write_r (ptr, fp->_file, buf, n);
  72
  73 #ifdef __SCLE
  74   if (oldmode)
  75     setmode(fp->_file, oldmode);
  76 #endif
  77
  78   return w;
  79 }
  80
  81 #ifndef _REENT_ONLY
  82 _fpos64_t
  83 __sseek64 (cookie, offset, whence)
  84      _PTR cookie;
  85      _fpos64_t offset;
  86      int whence;
  87 {
  88   return __sseek64_r (_REENT, cookie, offset, whence);
  89 }
  90
  91 _READ_WRITE_RETURN_TYPE
  92 __swrite64 (cookie, buf, n)
  93      _PTR cookie;
  94      char _CONST *buf;
  95      int n;
  96 {
  97   return __swrite64_r (_REENT, cookie, buf, n);
  98 }
  99
 100 #endif /* !_REENT_ONLY */
 101
 102 #endif /* __LARGE64_FILES */
 103