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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio64/] [fopen64.c] - Rev 307
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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. */ /* FUNCTION <<fopen64>>---open a large file INDEX fopen64 INDEX _fopen64_r ANSI_SYNOPSIS #include <stdio.h> FILE *fopen64(const char *<[file]>, const char *<[mode]>); FILE *_fopen64_r(void *<[reent]>, const char *<[file]>, const char *<[mode]>); TRAD_SYNOPSIS #include <stdio.h> FILE *fopen64(<[file]>, <[mode]>) char *<[file]>; char *<[mode]>; FILE *_fopen64_r(<[reent]>, <[file]>, <[mode]>) char *<[reent]>; char *<[file]>; char *<[mode]>; DESCRIPTION <<fopen64>> is identical to <<fopen>> except it opens a large file that is potentially >2GB in size. See <<fopen>> for further details. RETURNS <<fopen64>> return a file pointer which you can use for other file operations, unless the file you requested could not be opened; in that situation, the result is <<NULL>>. If the reason for failure was an invalid string at <[mode]>, <<errno>> is set to <<EINVAL>>. PORTABILITY <<fopen64>> is a glibc extension. Supporting OS subroutines required: <<close>>, <<fstat64>>, <<isatty>>, <<lseek64>>, <<open64>>, <<read>>, <<sbrk>>, <<write>>. */ /* Copied from fopen.c */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "%W% (Berkeley) %G%"; #endif /* LIBC_SCCS and not lint */ #include <stdio.h> #include <errno.h> #include "local.h" #ifdef __CYGWIN__ #include <fcntl.h> #endif #include <sys/lock.h> #ifdef __LARGE64_FILES FILE * _DEFUN (_fopen64_r, (ptr, file, mode), struct _reent *ptr _AND _CONST char *file _AND _CONST char *mode) { register FILE *fp; register int f; int flags, oflags; if ((flags = __sflags (ptr, mode, &oflags)) == 0) return NULL; if ((fp = __sfp (ptr)) == NULL) return NULL; if ((f = _open64_r (ptr, file, oflags, 0666)) < 0) { __sfp_lock_acquire (); fp->_flags = 0; /* release */ #ifndef __SINGLE_THREAD__ __lock_close_recursive (fp->_lock); #endif __sfp_lock_release (); return NULL; } _flockfile(fp); fp->_file = f; fp->_flags = flags; fp->_cookie = (_PTR) fp; fp->_read = __sread; fp->_write = __swrite64; fp->_seek = __sseek; fp->_seek64 = __sseek64; fp->_close = __sclose; if (fp->_flags & __SAPP) _fseeko64_r (ptr, fp, 0, SEEK_END); #ifdef __SCLE if (__stextmode (fp->_file)) fp->_flags |= __SCLE; #endif fp->_flags |= __SL64; _funlockfile(fp); return fp; } #ifndef _REENT_ONLY FILE * _DEFUN (fopen64, (file, mode), _CONST char *file _AND _CONST char *mode) { return _fopen64_r (_REENT, file, mode); } #endif #endif /* __LARGE64_FILES */
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