io/imap.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2001-2003,2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6
   7 #include "command.h"
   8 #include "input.h"
   9 #include "init.h"
  10 #include "io.h"
  11
  12 static cmdinfo_t imap_cmd;
  13
  14 static int
  15 imap_f(int argc, char **argv)
  16 {
  17         int             count;
  18         int             nent;
  19         int             i;
  20         __u64           last = 0;
  21         xfs_inogrp_t    *t;
  22         xfs_fsop_bulkreq_t bulkreq;
  23
  24         if (argc != 2)
  25                 nent = 1;
  26         else
  27                 nent = atoi(argv[1]);
  28
  29         t = malloc(nent * sizeof(*t));
  30         if (!t)
  31                 return 0;
  32
  33         bulkreq.lastip  = &last;
  34         bulkreq.icount  = nent;
  35         bulkreq.ubuffer = (void *)t;
  36         bulkreq.ocount  = &count;
  37
  38         while (xfsctl(file->name, file->fd, XFS_IOC_FSINUMBERS, &bulkreq) == 0) {
  39                 if (count == 0)
  40                         goto out_free;
  41                 for (i = 0; i < count; i++) {
  42                         printf(_("ino %10llu count %2d mask %016llx\n"),
  43                                 (unsigned long long)t[i].xi_startino,
  44                                 t[i].xi_alloccount,
  45                                 (unsigned long long)t[i].xi_allocmask);
  46                 }
  47         }
  48         perror("xfsctl(XFS_IOC_FSINUMBERS)");
  49         exitcode = 1;
  50 out_free:
  51         free(t);
  52         return 0;
  53 }
  54
  55 void
  56 imap_init(void)
  57 {
  58         imap_cmd.name = "imap";
  59         imap_cmd.cfunc = imap_f;
  60         imap_cmd.argmin = 0;
  61         imap_cmd.argmax = 1;
  62         imap_cmd.args = _("[nentries]");
  63         imap_cmd.flags = CMD_NOMAP_OK | CMD_FLAG_ONESHOT;
  64         imap_cmd.oneline = _("inode map for filesystem of current file");
  65
  66         if (expert)
  67                 add_command(&imap_cmd);
  68 }