e2fsck/iscan.c

   1 /*
   2  * Test to see how quickly we can scan the inode table (not doing
   3  * anything else)
   4  */
   5
   6 #include "config.h"
   7 #include <string.h>
   8 #include <fcntl.h>
   9 #include <ctype.h>
  10 #include <termios.h>
  11 #include <time.h>
  12 #ifdef HAVE_GETOPT_H
  13 #include <getopt.h>
  14 #endif
  15 #include <unistd.h>
  16 #ifdef HAVE_ERRNO_H
  17 #include <errno.h>
  18 #endif
  19 #include <sys/ioctl.h>
  20 #ifdef HAVE_MALLOC_H
  21 #include <malloc.h>
  22 #endif
  23
  24 #include "et/com_err.h"
  25 #include "e2fsck.h"
  26 #include "../version.h"
  27
  28 extern int isatty(int);
  29
  30 const char * program_name = "iscan";
  31 const char * device_name = NULL;
  32
  33 int yflag = 0;
  34 int nflag = 0;
  35 int preen = 0;
  36 int inode_buffer_blocks = 0;
  37 int invalid_bitmaps = 0;
  38
  39 struct resource_track   global_rtrack;
  40
  41 static void usage(void)
  42 {
  43         fprintf(stderr,
  44                 _("Usage: %s [-F] [-I inode_buffer_blocks] device\n"),
  45                 program_name);
  46         exit(1);
  47 }
  48
  49 static void PRS(int argc, char *argv[])
  50 {
  51         int             flush = 0;
  52         int             c;
  53 #ifdef MTRACE
  54         extern void     *mallwatch;
  55 #endif
  56         errcode_t       retval;
  57
  58         setbuf(stdout, NULL);
  59         setbuf(stderr, NULL);
  60         initialize_ext2_error_table();
  61
  62         if (argc && *argv)
  63                 program_name = *argv;
  64         while ((c = getopt (argc, argv, "FI")) != EOF)
  65                 switch (c) {
  66                 case 'F':
  67                         flush = 1;
  68                         break;
  69                 case 'I':
  70                         inode_buffer_blocks = atoi(optarg);
  71                         break;
  72                 default:
  73                         usage ();
  74                 }
  75         device_name = argv[optind];
  76         if (flush) {
  77                 int     fd = open(device_name, O_RDONLY, 0);
  78
  79                 if (fd < 0) {
  80                         com_err("open", errno,
  81                             _("while opening %s for flushing"), device_name);
  82                         exit(FSCK_ERROR);
  83                 }
  84                 if ((retval = ext2fs_sync_device(fd, 1))) {
  85                         com_err("ext2fs_sync_device", retval,
  86                                 _("while trying to flush %s"), device_name);
  87                         exit(FSCK_ERROR);
  88                 }
  89                 close(fd);
  90         }
  91 }
  92
  93 int main (int argc, char *argv[])
  94 {
  95         errcode_t       retval = 0;
  96         int             exit_value = FSCK_OK;
  97         ext2_filsys     fs;
  98         ext2_ino_t      ino;
  99         __u32   num_inodes = 0;
 100         struct ext2_inode inode;
 101         ext2_inode_scan scan;
 102
 103         init_resource_track(&global_rtrack);
 104
 105         PRS(argc, argv);
 106
 107         retval = ext2fs_open(device_name, 0,
 108                              0, 0, unix_io_manager, &fs);
 109         if (retval) {
 110                 com_err(program_name, retval, _("while trying to open '%s'"),
 111                         device_name);
 112                 exit(1);
 113         }
 114
 115         ehandler_init(fs->io);
 116
 117         retval = ext2fs_open_inode_scan(fs, inode_buffer_blocks, &scan);
 118         if (retval) {
 119                 com_err(program_name, retval, _("while opening inode scan"));
 120                 exit(1);
 121         }
 122
 123         while (1) {
 124                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
 125                 if (retval) {
 126                         com_err(program_name, retval,
 127                                 _("while getting next inode"));
 128                         exit(1);
 129                 }
 130                 if (ino == 0)
 131                         break;
 132                 num_inodes++;
 133         }
 134
 135         print_resource_track(NULL, &global_rtrack);
 136         printf(_("%u inodes scanned.\n"), num_inodes);
 137
 138         exit(0);
 139 }