musl/include/ftw.h

#ifndef _FTW_H
#define	_FTW_H

/* Normally we do not nest header includes. However useless bloat
 * like ftw may be treated as a special case. Otherwise we would
 * have to deal with duplicating all the stat.h mess. */
#include <sys/stat.h>

#define FTW_F   1
#define FTW_D   2
#define FTW_DNR 3
#define FTW_NS  4
#define FTW_SL  5
#define FTW_DP  6
#define FTW_SLN 7

#define FTW_PHYS  1
#define FTW_MOUNT 2
#define FTW_CHDIR 4
#define FTW_DEPTH 8

struct FTW
{
	int base;
	int level;
};

int ftw(const char *, int (*)(const char *, const struct stat *, int), int);
int nftw(const char *, int (*)(const char *, const struct stat *, int, struct FTW *), int, int);

#endif