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      1 /*
      2  * scantest.c - test the speed of the inode scan routine
      3  */
      4 
      5 #include <string.h>
      6 #include <fcntl.h>
      7 #include <ctype.h>
      8 #include <termios.h>
      9 #include <time.h>
     10 #ifdef HAVE_GETOPT_H
     11 #include <getopt.h>
     12 #endif
     13 #include <unistd.h>
     14 #include <sys/ioctl.h>
     15 #ifdef HAVE_MALLOC_H
     16 #include <malloc.h>
     17 #endif
     18 #include <sys/resource.h>
     19 
     20 #include "et/com_err.h"
     21 #include "../version.h"
     22 
     23 #include <stdio.h>
     24 #include <string.h>
     25 #include <unistd.h>
     26 #include <stdlib.h>
     27 #include <sys/stat.h>
     28 #include <sys/types.h>
     29 #include <sys/time.h>
     30 
     31 #include "ext2fs/ext2_fs.h"
     32 #include "ext2fs/ext2fs.h"
     33 
     34 
     35 extern int isatty(int);
     36 
     37 const char * device_name = NULL;
     38 
     39 /*
     40  * This structure is used for keeping track of how much resources have
     41  * been used for a particular pass of e2fsck.
     42  */
     43 struct resource_track {
     44 	struct timeval time_start;
     45 	struct timeval user_start;
     46 	struct timeval system_start;
     47 	void	*brk_start;
     48 };
     49 
     50 struct resource_track	global_rtrack;
     51 
     52 void init_resource_track(struct resource_track *track)
     53 {
     54 	struct rusage r;
     55 
     56 	track->brk_start = sbrk(0);
     57 	gettimeofday(&track->time_start, 0);
     58 	getrusage(RUSAGE_SELF, &r);
     59 	track->user_start = r.ru_utime;
     60 	track->system_start = r.ru_stime;
     61 }
     62 
     63 static __inline__ float timeval_subtract(struct timeval *tv1,
     64 					 struct timeval *tv2)
     65 {
     66 	return ((tv1->tv_sec - tv2->tv_sec) +
     67 		((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
     68 }
     69 
     70 static void print_resource_track(struct resource_track *track)
     71 {
     72 	struct rusage r;
     73 	struct timeval time_end;
     74 
     75 	gettimeofday(&time_end, 0);
     76 	getrusage(RUSAGE_SELF, &r);
     77 
     78 	printf(_("Memory used: %d, elapsed time: %6.3f/%6.3f/%6.3f\n"),
     79 	       (int) (((char *) sbrk(0)) - ((char *) track->brk_start)),
     80 	       timeval_subtract(&time_end, &track->time_start),
     81 	       timeval_subtract(&r.ru_utime, &track->user_start),
     82 	       timeval_subtract(&r.ru_stime, &track->system_start));
     83 }
     84 
     85 
     86 
     87 int main (int argc, char *argv[])
     88 {
     89 	errcode_t	retval = 0;
     90 	int		exit_value = 0;
     91 	int		i;
     92 	ext2_filsys	fs;
     93 	ext2_inode_scan	scan;
     94 	ext2_ino_t	ino;
     95 	struct ext2_inode inode;
     96 
     97 	printf(_("size of inode=%d\n"), sizeof(inode));
     98 
     99 	device_name = "/dev/hda3";
    100 
    101 	init_resource_track(&global_rtrack);
    102 
    103 	retval = ext2fs_open(device_name, 0,
    104 			     0, 0, unix_io_manager, &fs);
    105 	if (retval) {
    106 		com_err(argv[0], retval, _("while trying to open %s"),
    107 			device_name);
    108 		exit(1);
    109 	}
    110 
    111 	retval = ext2fs_open_inode_scan(fs, 0, &scan);
    112 	if (retval) {
    113 		com_err(argv[0], retval, _("while opening inode scan"));
    114 		exit(1);
    115 	}
    116 	retval = ext2fs_get_next_inode(scan, &ino, &inode);
    117 	if (retval) {
    118 		com_err(argv[0], retval, _("while starting inode scan"));
    119 		exit(1);
    120 	}
    121 	while (ino) {
    122 		if (!inode.i_links_count)
    123 			goto next;
    124 		printf("%lu\n", inode.i_blocks);
    125 	next:
    126 		retval = ext2fs_get_next_inode(scan, &ino, &inode);
    127 		if (retval) {
    128 			com_err(argv[0], retval,
    129 				_("while doing inode scan"));
    130 			exit(1);
    131 		}
    132 	}
    133 
    134 
    135 	ext2fs_close(fs);
    136 
    137 	print_resource_track(&global_rtrack);
    138 
    139 	return exit_value;
    140 }
    141