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 <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 #ifdef HAVE_ERRNO_H
  16 #include <errno.h>
  17 #endif
  18 #ifdef HAVE_MNTENT_H
  19 #include <mntent.h>
  20 #endif
  21 #include <sys/ioctl.h>
  22 #ifdef HAVE_MALLOC_H
  23 #include <malloc.h>
  24 #endif
  25
  26 #include "et/com_err.h"
  27 #include "e2fsck.h"
  28 #include "../version.h"
  29
  30 extern int isatty(int);
  31
  32 const char * program_name = "iscan";
  33 const char * device_name = NULL;
  34
  35 int yflag = 0;
  36 int nflag = 0;
  37 int preen = 0;
  38 int inode_buffer_blocks = 0;
  39 int invalid_bitmaps = 0;
  40
  41 struct resource_track   global_rtrack;
  42
  43 static void usage(void)
  44 {
  45         fprintf(stderr,
  46                 _("Usage: %s [-F] [-I inode_buffer_blocks] device\n"),
  47                 program_name);
  48         exit(1);
  49 }
  50
  51 static void PRS(int argc, char *argv[])
  52 {
  53         int             flush = 0;
  54         char            c;
  55 #ifdef MTRACE
  56         extern void     *mallwatch;
  57 #endif
  58         errcode_t       retval;
  59
  60         setbuf(stdout, NULL);
  61         setbuf(stderr, NULL);
  62         initialize_ext2_error_table();
  63
  64         if (argc && *argv)
  65                 program_name = *argv;
  66         while ((c = getopt (argc, argv, "FI")) != EOF)
  67                 switch (c) {
  68                 case 'F':
  69                         flush = 1;
  70                         break;
  71                 case 'I':
  72                         inode_buffer_blocks = atoi(optarg);
  73                         break;
  74                 default:
  75                         usage ();
  76                 }
  77         device_name = argv[optind];
  78         if (flush) {
  79                 int     fd = open(device_name, O_RDONLY, 0);
  80
  81                 if (fd < 0) {
  82                         com_err("open", errno,
  83                             _("while opening %s for flushing"), device_name);
  84                         exit(FSCK_ERROR);
  85                 }
  86                 if ((retval = ext2fs_sync_device(fd, 1))) {
  87                         com_err("ext2fs_sync_device", retval,
  88                                 _("while trying to flush %s"), device_name);
  89                         exit(FSCK_ERROR);
  90                 }
  91                 close(fd);
  92         }
  93 }
  94
  95 int main (int argc, char *argv[])
  96 {
  97         errcode_t       retval = 0;
  98         int             exit_value = FSCK_OK;
  99         ext2_filsys     fs;
 100         ext2_ino_t      ino;
 101         __u32   num_inodes = 0;
 102         struct ext2_inode inode;
 103         ext2_inode_scan scan;
 104
 105         init_resource_track(&global_rtrack);
 106
 107         PRS(argc, argv);
 108
 109         retval = ext2fs_open(device_name, 0,
 110                              0, 0, unix_io_manager, &fs);
 111         if (retval) {
 112                 com_err(program_name, retval, _("while trying to open %s"),
 113                         device_name);
 114                 exit(1);
 115         }
 116
 117         ehandler_init(fs->io);
 118
 119         retval = ext2fs_open_inode_scan(fs, inode_buffer_blocks, &scan);
 120         if (retval) {
 121                 com_err(program_name, retval, _("while opening inode scan"));
 122                 exit(1);
 123         }
 124
 125         while (1) {
 126                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
 127                 if (retval) {
 128                         com_err(program_name, retval,
 129                                 _("while getting next inode"));
 130                         exit(1);
 131                 }
 132                 if (ino == 0)
 133                         break;
 134                 num_inodes++;
 135         }
 136
 137         print_resource_track(NULL, &global_rtrack);
 138         printf(_("%u inodes scanned.\n"), num_inodes);
 139
 140         exit(0);
 141 }