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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 #ifdef HAVE_MNTENT_H
     15 #include <mntent.h>
     16 #endif
     17 #include <sys/ioctl.h>
     18 #ifdef HAVE_MALLOC_H
     19 #include <malloc.h>
     20 #endif
     21 #include <sys/resource.h>
     22 
     23 #include "et/com_err.h"
     24 #include "../version.h"
     25 
     26 #include <stdio.h>
     27 #include <string.h>
     28 #include <unistd.h>
     29 #include <stdlib.h>
     30 #include <sys/stat.h>
     31 #include <sys/types.h>
     32 #include <sys/time.h>
     33 
     34 #include "ext2fs/ext2_fs.h"
     35 #include "ext2fs/ext2fs.h"
     36 
     37 
     38 extern int isatty(int);
     39 
     40 const char * device_name = NULL;
     41 
     42 /*
     43  * This structure is used for keeping track of how much resources have
     44  * been used for a particular pass of e2fsck.
     45  */
     46 struct resource_track {
     47 	struct timeval time_start;
     48 	struct timeval user_start;
     49 	struct timeval system_start;
     50 	void	*brk_start;
     51 };
     52 
     53 struct resource_track	global_rtrack;
     54 
     55 void init_resource_track(struct resource_track *track)
     56 {
     57 	struct rusage r;
     58 
     59 	track->brk_start = sbrk(0);
     60 	gettimeofday(&track->time_start, 0);
     61 	getrusage(RUSAGE_SELF, &r);
     62 	track->user_start = r.ru_utime;
     63 	track->system_start = r.ru_stime;
     64 }
     65 
     66 static __inline__ float timeval_subtract(struct timeval *tv1,
     67 					 struct timeval *tv2)
     68 {
     69 	return ((tv1->tv_sec - tv2->tv_sec) +
     70 		((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
     71 }
     72 
     73 static void print_resource_track(struct resource_track *track)
     74 {
     75 	struct rusage r;
     76 	struct timeval time_end;
     77 
     78 	gettimeofday(&time_end, 0);
     79 	getrusage(RUSAGE_SELF, &r);
     80 
     81 	printf(_("Memory used: %d, elapsed time: %6.3f/%6.3f/%6.3f\n"),
     82 	       (int) (((char *) sbrk(0)) - ((char *) track->brk_start)),
     83 	       timeval_subtract(&time_end, &track->time_start),
     84 	       timeval_subtract(&r.ru_utime, &track->user_start),
     85 	       timeval_subtract(&r.ru_stime, &track->system_start));
     86 }
     87 
     88 
     89 
     90 int main (int argc, char *argv[])
     91 {
     92 	errcode_t	retval = 0;
     93 	int		exit_value = 0;
     94 	int		i;
     95 	ext2_filsys	fs;
     96 	ext2_inode_scan	scan;
     97 	ext2_ino_t	ino;
     98 	struct ext2_inode inode;
     99 
    100 	printf(_("size of inode=%d\n"), sizeof(inode));
    101 
    102 	device_name = "/dev/hda3";
    103 
    104 	init_resource_track(&global_rtrack);
    105 
    106 	retval = ext2fs_open(device_name, 0,
    107 			     0, 0, unix_io_manager, &fs);
    108 	if (retval) {
    109 		com_err(argv[0], retval, _("while trying to open %s"),
    110 			device_name);
    111 		exit(1);
    112 	}
    113 
    114 	retval = ext2fs_open_inode_scan(fs, 0, &scan);
    115 	if (retval) {
    116 		com_err(argv[0], retval, _("while opening inode scan"));
    117 		exit(1);
    118 	}
    119 	retval = ext2fs_get_next_inode(scan, &ino, &inode);
    120 	if (retval) {
    121 		com_err(argv[0], retval, _("while starting inode scan"));
    122 		exit(1);
    123 	}
    124 	while (ino) {
    125 		if (!inode.i_links_count)
    126 			goto next;
    127 		printf("%lu\n", inode.i_blocks);
    128 	next:
    129 		retval = ext2fs_get_next_inode(scan, &ino, &inode);
    130 		if (retval) {
    131 			com_err(argv[0], retval,
    132 				_("while doing inode scan"));
    133 			exit(1);
    134 		}
    135 	}
    136 
    137 
    138 	ext2fs_close(fs);
    139 
    140 	print_resource_track(&global_rtrack);
    141 
    142 	return exit_value;
    143 }
    144