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/* Reentrant versions of open system call. */
#include <reent.h>
#include <unistd.h>
#include <fcntl.h>
#include <_syslist.h>
#ifdef __LARGE64_FILES
/* Some targets provides their own versions of this functions. Those
targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */
#ifdef _REENT_ONLY
#ifndef REENTRANT_SYSCALLS_PROVIDED
#define REENTRANT_SYSCALLS_PROVIDED
#endif
#endif
#ifndef REENTRANT_SYSCALLS_PROVIDED
/* We use the errno variable used by the system dependent layer. */
#undef errno
extern int errno;
/*
FUNCTION
<<_open64_r>>---Reentrant version of open64
INDEX
_open64_r
ANSI_SYNOPSIS
#include <reent.h>
int _open64_r(struct _reent *<[ptr]>,
const char *<[file]>, int <[flags]>, int <[mode]>);
TRAD_SYNOPSIS
#include <reent.h>
int _open64_r(<[ptr]>, <[file]>, <[flags]>, <[mode]>)
struct _reent *<[ptr]>;
char *<[file]>;
int <[flags]>;
int <[mode]>;
DESCRIPTION
This is a reentrant version of <<open64>>. It
takes a pointer to the global data block, which holds
<<errno>>. This function only exists on systems with
large file support.
*/
int
_open64_r (ptr, file, flags, mode)
struct _reent *ptr;
_CONST char *file;
int flags;
int mode;
{
int ret;
errno = 0;
if ((ret = _open64 (file, flags, mode)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
#endif /* __LARGE64_FILES */
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