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/* Reentrant versions of file system calls. These implementations
just call the usual system calls. */
#include <reent.h>
#include <unistd.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
#ifdef REENTRANT_SYSCALLS_PROVIDED
int _dummy_link_syscalls = 1;
#else
/* We use the errno variable used by the system dependent layer. */
#undef errno
extern int errno;
/*
FUNCTION
<<_link_r>>---Reentrant version of link
INDEX
_link_r
ANSI_SYNOPSIS
#include <reent.h>
int _link_r(struct _reent *<[ptr]>,
const char *<[old]>, const char *<[new]>);
TRAD_SYNOPSIS
#include <reent.h>
int _link_r(<[ptr]>, <[old]>, <[new]>)
struct _reent *<[ptr]>;
char *<[old]>;
char *<[new]>;
DESCRIPTION
This is a reentrant version of <<link>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_DEFUN (_link_r, (ptr, old, new),
struct _reent *ptr _AND
_CONST char *old _AND
_CONST char *new)
{
int ret;
errno = 0;
if ((ret = _link (old, new)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
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