io/resblks.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 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 resblks_cmd;
  13 static int resblks_f(int argc, char **argv);
  14
  15 static int
  16 resblks_f(
  17         int                     argc,
  18         char                    **argv)
  19 {
  20         xfs_fsop_resblks_t      res;
  21         long long               blks;
  22
  23         if (argc == 2) {
  24                 blks = cvtnum(file->geom.blocksize, file->geom.sectsize, argv[1]);
  25                 if (blks < 0) {
  26                         printf(_("non-numeric argument -- %s\n"), argv[1]);
  27                         exitcode = 1;
  28                         return 0;
  29                 }
  30                 res.resblks = blks;
  31                 if (xfsctl(file->name, file->fd, XFS_IOC_SET_RESBLKS, &res) < 0) {
  32                         perror("XFS_IOC_SET_RESBLKS");
  33                         exitcode = 1;
  34                         return 0;
  35                 }
  36         } else if (xfsctl(file->name, file->fd, XFS_IOC_GET_RESBLKS, &res) < 0) {
  37                 perror("XFS_IOC_GET_RESBLKS");
  38                 exitcode = 1;
  39                 return 0;
  40         }
  41         printf(_("reserved blocks = %llu\n"),
  42                         (unsigned long long) res.resblks);
  43         printf(_("available reserved blocks = %llu\n"),
  44                         (unsigned long long) res.resblks_avail);
  45         return 0;
  46 }
  47
  48 void
  49 resblks_init(void)
  50 {
  51         resblks_cmd.name = "resblks";
  52         resblks_cmd.cfunc = resblks_f;
  53         resblks_cmd.argmin = 0;
  54         resblks_cmd.argmax = 1;
  55         resblks_cmd.flags = CMD_NOMAP_OK | CMD_FLAG_ONESHOT;
  56         resblks_cmd.args = _("[blocks]");
  57         resblks_cmd.oneline =
  58                 _("get and/or set count of reserved filesystem blocks");
  59
  60         if (expert)
  61                 add_command(&resblks_cmd);
  62 }