/**************************************************************/
/*  tpax: a topological pax implementation                    */
/*  Copyright (C) 2020--2021  SysDeer Technologies, LLC       */
/*  Released under GPLv2 and GPLv3; see COPYING.TPAX.         */
/**************************************************************/

#ifndef TPAX_READLINK_IMPL_H
#define TPAX_READLINK_IMPL_H

#include <unistd.h>
#include <errno.h>

static inline int tpax_readlinkat(
	int		fdat,
	const char *	restrict path,
	char *		restrict buf,
	ssize_t		bufsize)
{
	ssize_t ret;

	if ((ret = readlinkat(fdat,path,buf,bufsize)) <= 0) {
		return -1;
	} else if (ret == bufsize) {
		errno = ENOBUFS;
		return -1;
	} else {
		buf[ret] = 0;
		return 0;
	}
}

#endif