#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <xfs/xfs.h>

#include <sys/quota.h>
#ifndef PRJQUOTA
#define PRJQUOTA 2
#endif

/*
 * Speculative preallocation trimming.
 */
#define XFS_EOFBLOCKS_VERSION           1
struct xfs_eofblocks {
        __s32           eof_version;
        __u32           eof_flags;
        __u32           eof_q_id;
        __u32           eof_q_type;
        __u32           eof_min_file_size;
        unsigned char   pad[12];
};

/* eof_flags values */
#define XFS_EOF_FLAGS_SYNC              0x01    /* sync/wait mode scan */
#define XFS_EOF_FLAGS_QUOTA             0x02    /* filter by quota id */
#define XFS_EOF_FLAGS_MINFILESIZE       0x04    /* filter by min file size */

#define XFS_IOC_FREE_EOFBLOCKS  _IOR ('X', 58, struct xfs_eofblocks)

int main(int argc, char *argv[])
{
        int ret, fd;
	struct xfs_eofblocks eofb;

        fd = open(argv[1], O_RDONLY);
	if (fd < 0) {
		perror("open");
		return -1;
	}

	memset(&eofb, 0, sizeof(struct xfs_eofblocks));

	eofb.eof_version = XFS_EOFBLOCKS_VERSION;
	eofb.eof_flags |= XFS_EOF_FLAGS_SYNC;
	//eofb.eof_flags |= XFS_EOF_FLAGS_QUOTA;
	//eofb.eof_q_id = 42;
	//eofb.eof_q_type = PRJQUOTA;
	eofb.eof_flags |= XFS_EOF_FLAGS_MINFILESIZE;
	eofb.eof_min_file_size = 1024 * 1024 * 101;
        ret = xfsctl(NULL, fd, XFS_IOC_FREE_EOFBLOCKS, &eofb);
        if (ret < 0) 
		perror("xfsctl");

        if (close(fd) < 0)
		perror("close");

	return 0;
}