net/9p/sysctl.c

   1 /*
   2  *  net/9p/sysctl.c
   3  *
   4  *  9P sysctl interface
   5  *
   6  *  Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2
  10  *  as published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to:
  19  *  Free Software Foundation
  20  *  51 Franklin Street, Fifth Floor
  21  *  Boston, MA  02111-1301  USA
  22  *
  23  */
  24
  25 #include <linux/kernel.h>
  26 #include <linux/mm.h>
  27 #include <linux/sysctl.h>
  28 #include <linux/init.h>
  29 #include <net/9p/9p.h>
  30
  31 enum {
  32         P9_SYSCTL_NET = 487,
  33         P9_SYSCTL_DEBUG = 1,
  34 };
  35
  36 static ctl_table p9_table[] = {
  37 #ifdef CONFIG_NET_9P_DEBUG
  38         {
  39                 .ctl_name       = P9_SYSCTL_DEBUG,
  40                 .procname       = "debug",
  41                 .data           = &p9_debug_level,
  42                 .maxlen         = sizeof(int),
  43                 .mode           = 0644,
  44                 .proc_handler   = &proc_dointvec
  45         },
  46 #endif
  47         {       .ctl_name       = 0 },
  48 };
  49
  50 static ctl_table p9_net_table[] = {
  51         {
  52                 .ctl_name       = P9_SYSCTL_NET,
  53                 .procname       = "9p",
  54                 .maxlen         = 0,
  55                 .mode           = 0555,
  56                 .child          = p9_table,
  57         },
  58         {       .ctl_name       = 0 },
  59 };
  60
  61 static ctl_table p9_ctl_table[] = {
  62         {
  63                 .ctl_name       = CTL_NET,
  64                 .procname       = "net",
  65                 .maxlen         = 0,
  66                 .mode           = 0555,
  67                 .child          = p9_net_table,
  68         },
  69         {       .ctl_name       = 0 },
  70 };
  71
  72 static struct ctl_table_header *p9_table_header;
  73
  74 int __init p9_sysctl_register(void)
  75 {
  76         p9_table_header = register_sysctl_table(p9_ctl_table);
  77         if (!p9_table_header)
  78                 return -ENOMEM;
  79
  80         return 0;
  81 }
  82
  83 void __exit p9_sysctl_unregister(void)
  84 {
  85          unregister_sysctl_table(p9_table_header);
  86 }