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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [stdio/] [stdio.c] - Rev 387
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/* * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by the University of California, Berkeley. The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ /* No user fns here. Pesch 15apr92. */ #include <_ansi.h> #include <reent.h> #include <stdio.h> #include <sys/types.h> #include <fcntl.h> #include <sys/unistd.h> #include "local.h" /* * Small standard I/O/seek/close functions. * These maintain the `known seek offset' for seek optimisation. */ _READ_WRITE_RETURN_TYPE _DEFUN(__sread, (ptr, cookie, buf, n), struct _reent *ptr _AND void *cookie _AND char *buf _AND int n) { register FILE *fp = (FILE *) cookie; register int ret; #ifdef __SCLE int oldmode = 0; if (fp->_flags & __SCLE) oldmode = setmode (fp->_file, O_BINARY); #endif ret = _read_r (ptr, fp->_file, buf, n); #ifdef __SCLE if (oldmode) setmode (fp->_file, oldmode); #endif /* If the read succeeded, update the current offset. */ if (ret >= 0) fp->_offset += ret; else fp->_flags &= ~__SOFF; /* paranoia */ return ret; } _READ_WRITE_RETURN_TYPE _DEFUN(__swrite, (ptr, cookie, buf, n), struct _reent *ptr _AND void *cookie _AND char const *buf _AND int n) { register FILE *fp = (FILE *) cookie; int w; #ifdef __SCLE int oldmode=0; #endif if (fp->_flags & __SAPP) _lseek_r (ptr, fp->_file, (_off_t) 0, SEEK_END); fp->_flags &= ~__SOFF; /* in case O_APPEND mode is set */ #ifdef __SCLE if (fp->_flags & __SCLE) oldmode = setmode (fp->_file, O_BINARY); #endif w = _write_r (ptr, fp->_file, buf, n); #ifdef __SCLE if (oldmode) setmode (fp->_file, oldmode); #endif return w; } _fpos_t _DEFUN(__sseek, (ptr, cookie, offset, whence), struct _reent *ptr _AND void *cookie _AND _fpos_t offset _AND int whence) { register FILE *fp = (FILE *) cookie; register _off_t ret; ret = _lseek_r (ptr, fp->_file, (_off_t) offset, whence); if (ret == -1L) fp->_flags &= ~__SOFF; else { fp->_flags |= __SOFF; fp->_offset = ret; } return ret; } int _DEFUN(__sclose, (ptr, cookie), struct _reent *ptr _AND void *cookie) { FILE *fp = (FILE *) cookie; return _close_r (ptr, fp->_file); } #ifdef __SCLE int _DEFUN(__stextmode, (fd), int fd) { #ifdef __CYGWIN__ extern int _cygwin_istext_for_stdio (int); return _cygwin_istext_for_stdio (fd); #else return 0; #endif } #endif
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