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Diffstat (limited to 'newlib/libc/stdio64/fopen64.c')
-rw-r--r-- | newlib/libc/stdio64/fopen64.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/newlib/libc/stdio64/fopen64.c b/newlib/libc/stdio64/fopen64.c new file mode 100644 index 000000000..58ea1459c --- /dev/null +++ b/newlib/libc/stdio64/fopen64.c @@ -0,0 +1,131 @@ +#ifdef __LARGE64_FILES + +/* + * 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 "local64.h" +#ifdef __CYGWIN__ +#include <fcntl.h> +#endif + +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 (fp->_data, file, oflags, 0666)) < 0) + { + fp->_flags = 0; /* release */ + return NULL; + } + + 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 (fp, 0, SEEK_END); + +#ifdef __SCLE + if (__stextmode (fp->_file)) + fp->_flags |= __SCLE; +#endif + + fp->_flags |= __SL64; + + 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 */ |