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/* Reentrant version of rename system call. */
#include <reent.h>
#include <stdio.h>
#include <unistd.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
<<_rename_r>>---Reentrant version of rename
INDEX
_rename_r
ANSI_SYNOPSIS
#include <reent.h>
int _rename_r(struct _reent *<[ptr]>,
const char *<[old]>, const char *<[new]>);
TRAD_SYNOPSIS
#include <reent.h>
int _rename_r(<[ptr]>, <[old]>, <[new]>)
struct _reent *<[ptr]>;
char *<[old]>;
char *<[new]>;
DESCRIPTION
This is a reentrant version of <<rename>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_DEFUN (_rename_r, (ptr, old, new),
struct _reent *ptr _AND
_CONST char *old _AND
_CONST char *new)
{
int ret = 0;
#ifdef HAVE_RENAME
errno = 0;
if ((ret = _rename (old, new)) == -1 && errno != 0)
ptr->_errno = errno;
#else
if (_link_r (ptr, old, new) == -1)
return -1;
if (_unlink_r (ptr, old) == -1)
{
/* ??? Should we unlink new? (rhetorical question) */
return -1;
}
#endif
return ret;
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
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