io/imap.c

   1 /*
   2  * Copyright (c) 2001-2003,2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18
  19 #include "command.h"
  20 #include "input.h"
  21 #include "init.h"
  22 #include "io.h"
  23
  24 static cmdinfo_t imap_cmd;
  25
  26 int
  27 imap_f(int argc, char **argv)
  28 {
  29         int             count;
  30         int             nent;
  31         int             i;
  32         __u64           last = 0;
  33         xfs_inogrp_t    *t;
  34         xfs_fsop_bulkreq_t bulkreq;
  35
  36         if (argc != 2)
  37                 nent = 1;
  38         else
  39                 nent = atoi(argv[1]);
  40
  41         t = malloc(nent * sizeof(*t));
  42         if (!t)
  43                 return 0;
  44
  45         bulkreq.lastip  = &last;
  46         bulkreq.icount  = nent;
  47         bulkreq.ubuffer = (void *)t;
  48         bulkreq.ocount  = &count;
  49
  50         while (xfsctl(file->name, file->fd, XFS_IOC_FSINUMBERS, &bulkreq) == 0) {
  51                 if (count == 0)
  52                         goto out_free;
  53                 for (i = 0; i < count; i++) {
  54                         printf(_("ino %10llu count %2d mask %016llx\n"),
  55                                 (unsigned long long)t[i].xi_startino,
  56                                 t[i].xi_alloccount,
  57                                 (unsigned long long)t[i].xi_allocmask);
  58                 }
  59         }
  60         perror("xfsctl(XFS_IOC_FSINUMBERS)");
  61         exitcode = 1;
  62 out_free:
  63         free(t);
  64         return 0;
  65 }
  66
  67 void
  68 imap_init(void)
  69 {
  70         imap_cmd.name = "imap";
  71         imap_cmd.cfunc = imap_f;
  72         imap_cmd.argmin = 0;
  73         imap_cmd.argmax = 1;
  74         imap_cmd.args = _("[nentries]");
  75         imap_cmd.flags = CMD_NOMAP_OK;
  76         imap_cmd.oneline = _("inode map for filesystem of current file");
  77
  78         if (expert)
  79                 add_command(&imap_cmd);
  80 }