58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/* Reentrant versions of fcntl system call. This implementation just
|
|
calls the fcntl system call. */
|
|
|
|
#include <reent.h>
|
|
#include <fcntl.h>
|
|
#include <sys/stat.h>
|
|
#include <_syslist.h>
|
|
|
|
/* Some targets provides their own versions of these 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
|
|
<<_fcntl_r>>---Reentrant version of fcntl
|
|
|
|
INDEX
|
|
_fcntl_r
|
|
|
|
SYNOPSIS
|
|
#include <reent.h>
|
|
int _fcntl_r(struct _reent *<[ptr]>,
|
|
int <[fd]>, int <[cmd]>, <[arg]>);
|
|
|
|
DESCRIPTION
|
|
This is a reentrant version of <<fcntl>>. It
|
|
takes a pointer to the global data block, which holds
|
|
<<errno>>.
|
|
*/
|
|
|
|
int
|
|
_DEFUN (_fcntl_r, (ptr, fd, cmd, arg),
|
|
struct _reent *ptr _AND
|
|
int fd _AND
|
|
int cmd _AND
|
|
int arg)
|
|
{
|
|
int ret;
|
|
|
|
errno = 0;
|
|
if ((ret = _fcntl (fd, cmd, arg)) == -1 && errno != 0)
|
|
ptr->_errno = errno;
|
|
return ret;
|
|
}
|
|
|
|
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
|