io/resblks.c

   1 /*
   2  * Copyright (c) 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 <xfs/libxfs.h>
  20 #include <xfs/command.h>
  21 #include <xfs/input.h>
  22 #include "init.h"
  23 #include "io.h"
  24
  25 static cmdinfo_t resblks_cmd;
  26 static int resblks_f(int argc, char **argv);
  27
  28 static int
  29 resblks_f(
  30         int                     argc,
  31         char                    **argv)
  32 {
  33         xfs_fsop_resblks_t      res;
  34         long long               blks;
  35
  36         if (argc == 2) {
  37                 blks = cvtnum(file->geom.blocksize, file->geom.sectsize, argv[1]);
  38                 if (blks < 0) {
  39                         printf(_("non-numeric argument -- %s\n"), argv[1]);
  40                         return 0;
  41                 }
  42                 res.resblks = blks;
  43                 if (xfsctl(file->name, file->fd, XFS_IOC_SET_RESBLKS, &res) < 0) {
  44                         perror("XFS_IOC_SET_RESBLKS");
  45                         return 0;
  46                 }
  47         } else if (xfsctl(file->name, file->fd, XFS_IOC_GET_RESBLKS, &res) < 0) {
  48                 perror("XFS_IOC_GET_RESBLKS");
  49                 return 0;
  50         }
  51         printf(_("reserved blocks = %llu\n"),
  52                         (unsigned long long) res.resblks);
  53         printf(_("available reserved blocks = %llu\n"),
  54                         (unsigned long long) res.resblks_avail);
  55         return 0;
  56 }
  57
  58 void
  59 resblks_init(void)
  60 {
  61         resblks_cmd.name = _("resblks");
  62         resblks_cmd.cfunc = resblks_f;
  63         resblks_cmd.argmin = 0;
  64         resblks_cmd.argmax = 1;
  65         resblks_cmd.flags = CMD_NOMAP_OK;
  66         resblks_cmd.args = _("[blocks]");
  67         resblks_cmd.oneline =
  68                 _("get and/or set count of reserved filesystem blocks");
  69
  70         if (expert)
  71                 add_command(&resblks_cmd);
  72 }