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      1 /*
      2  * scantest.c - test the speed of the inode scan routine
      3  */
      4 
      5 #include "config.h"
      6 #include <string.h>
      7 #include <fcntl.h>
      8 #include <ctype.h>
      9 #include <termios.h>
     10 #include <time.h>
     11 #ifdef HAVE_GETOPT_H
     12 #include <getopt.h>
     13 #endif
     14 #include <unistd.h>
     15 #include <sys/ioctl.h>
     16 #ifdef HAVE_MALLOC_H
     17 #include <malloc.h>
     18 #endif
     19 #include <sys/resource.h>
     20 
     21 #include "et/com_err.h"
     22 #include "../version.h"
     23 
     24 #include <stdio.h>
     25 #include <string.h>
     26 #include <unistd.h>
     27 #include <stdlib.h>
     28 #include <sys/stat.h>
     29 #include <sys/types.h>
     30 #include <sys/time.h>
     31 
     32 #include "ext2fs/ext2_fs.h"
     33 #include "ext2fs/ext2fs.h"
     34 
     35 
     36 extern int isatty(int);
     37 
     38 const char * device_name = NULL;
     39 
     40 /*
     41  * This structure is used for keeping track of how much resources have
     42  * been used for a particular pass of e2fsck.
     43  */
     44 struct resource_track {
     45 	struct timeval time_start;
     46 	struct timeval user_start;
     47 	struct timeval system_start;
     48 	void	*brk_start;
     49 };
     50 
     51 struct resource_track	global_rtrack;
     52 
     53 void init_resource_track(struct resource_track *track)
     54 {
     55 	struct rusage r;
     56 
     57 	track->brk_start = sbrk(0);
     58 	gettimeofday(&track->time_start, 0);
     59 	getrusage(RUSAGE_SELF, &r);
     60 	track->user_start = r.ru_utime;
     61 	track->system_start = r.ru_stime;
     62 }
     63 
     64 static __inline__ float timeval_subtract(struct timeval *tv1,
     65 					 struct timeval *tv2)
     66 {
     67 	return ((tv1->tv_sec - tv2->tv_sec) +
     68 		((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
     69 }
     70 
     71 static void print_resource_track(struct resource_track *track)
     72 {
     73 	struct rusage r;
     74 	struct timeval time_end;
     75 
     76 	gettimeofday(&time_end, 0);
     77 	getrusage(RUSAGE_SELF, &r);
     78 
     79 	printf(_("Memory used: %d, elapsed time: %6.3f/%6.3f/%6.3f\n"),
     80 	       (int) (((char *) sbrk(0)) - ((char *) track->brk_start)),
     81 	       timeval_subtract(&time_end, &track->time_start),
     82 	       timeval_subtract(&r.ru_utime, &track->user_start),
     83 	       timeval_subtract(&r.ru_stime, &track->system_start));
     84 }
     85 
     86 
     87 
     88 int main (int argc, char *argv[])
     89 {
     90 	errcode_t	retval = 0;
     91 	int		exit_value = 0;
     92 	int		i;
     93 	ext2_filsys	fs;
     94 	ext2_inode_scan	scan;
     95 	ext2_ino_t	ino;
     96 	struct ext2_inode inode;
     97 
     98 	printf(_("size of inode=%d\n"), sizeof(inode));
     99 
    100 	device_name = "/dev/hda3";
    101 
    102 	init_resource_track(&global_rtrack);
    103 
    104 	retval = ext2fs_open(device_name, 0,
    105 			     0, 0, unix_io_manager, &fs);
    106 	if (retval) {
    107 		com_err(argv[0], retval, _("while trying to open %s"),
    108 			device_name);
    109 		exit(1);
    110 	}
    111 
    112 	retval = ext2fs_open_inode_scan(fs, 0, &scan);
    113 	if (retval) {
    114 		com_err(argv[0], retval, _("while opening inode scan"));
    115 		exit(1);
    116 	}
    117 	retval = ext2fs_get_next_inode(scan, &ino, &inode);
    118 	if (retval) {
    119 		com_err(argv[0], retval, _("while starting inode scan"));
    120 		exit(1);
    121 	}
    122 	while (ino) {
    123 		if (!inode.i_links_count)
    124 			goto next;
    125 		printf("%lu\n", inode.i_blocks);
    126 	next:
    127 		retval = ext2fs_get_next_inode(scan, &ino, &inode);
    128 		if (retval) {
    129 			com_err(argv[0], retval,
    130 				_("while doing inode scan"));
    131 			exit(1);
    132 		}
    133 	}
    134 
    135 
    136 	ext2fs_close_free(&fs);
    137 
    138 	print_resource_track(&global_rtrack);
    139 
    140 	return exit_value;
    141 }
    142