/*
 * linda-test.c
 *
 * quick hack mangled from other code to make sure this works all
 * happy for linda
 *
 * use this code as you will, no warranty, etc. --- if it breaks, you
 * get to keep all the peices
 *
 * cw@xxxxxxxx
 *
 */

#define _GNU_SOURCE

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <time.h>
#include <string.h>

#include <xfs/platform_defs.h>
#include <xfs/xfs_fs.h>

#include <stdio.h>

#define NINODE (256)


int main()
{
    struct timeval before, after;
    xfs_fsop_bulkreq_t brq;
    xfs_bstat_t buf[NINODE];
    xfs_ino_t lastino = 0;
    size_t ocount, total = 0;
    int fd;
    int i;
    int ndir = 0, nfdir = 0;
    int nfile = 0, nffile = 0;

    if ((fd = open("/", O_RDONLY)) == -1) {
	perror("open");
	exit(1);
    }

    printf("stating (please wait)....\n");
    gettimeofday(&before, NULL);

    do {
	brq.lastip = &lastino;
	brq.icount = NINODE;
	brq.ubuffer = buf;
	brq.ocount = &ocount;
	if (-1 == ioctl(fd, XFS_IOC_FSBULKSTAT, &brq)) {
	    perror("ioctl");
	    exit(1);
	}
	total += ocount;

	/* copy useful inodes out, we only care about fragemented
	   files and directories. later, we can prune and directories
	   that have no fragmented files and nlink==2 (ie. no sub
	   directories) */

	for (i=0; i<ocount; ++i) {

	    if (S_ISDIR(buf[i].bs_mode)) {
		ndir++;

		if (buf[i].bs_extents > 1)
		    nfdir++;
	    }

	    if (S_ISREG(buf[i].bs_mode)) {
		nfile++;

		if (buf[i].bs_extents > 1)
		    nffile++;
	    }
	}


    } while(ocount);
    gettimeofday(&after, NULL);


    printf("\nbulkstat of %d total inodes took %0.3f seconds\n\n",
	   total,
	   ((double)(after.tv_sec - before.tv_sec) + (double)(after.tv_usec - before.tv_usec) / 1000000.0));

    printf("Total files:                  %8d\n", nfile);
    printf("Total fragmented files:       %8d\n", nffile);
    printf("Total directories:            %8d\n", ndir);
    printf("Total fragmented directories: %8d\n", nfdir);
    close(fd);

    return 0;
}