drivers/scsi/scsi_sysctl.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2003 Christoph Hellwig.
   4  */
   5
   6 #include <linux/errno.h>
   7 #include <linux/init.h>
   8 #include <linux/kernel.h>
   9 #include <linux/sysctl.h>
  10
  11 #include "scsi_logging.h"
  12 #include "scsi_priv.h"
  13
  14
  15 static struct ctl_table scsi_table[] = {
  16         { .procname     = "logging_level",
  17           .data         = &scsi_logging_level,
  18           .maxlen       = sizeof(scsi_logging_level),
  19           .mode         = 0644,
  20           .proc_handler = proc_dointvec },
  21         { }
  22 };
  23
  24 static struct ctl_table scsi_dir_table[] = {
  25         { .procname     = "scsi",
  26           .mode         = 0555,
  27           .child        = scsi_table },
  28         { }
  29 };
  30
  31 static struct ctl_table scsi_root_table[] = {
  32         { .procname     = "dev",
  33           .mode         = 0555,
  34           .child        = scsi_dir_table },
  35         { }
  36 };
  37
  38 static struct ctl_table_header *scsi_table_header;
  39
  40 int __init scsi_init_sysctl(void)
  41 {
  42         scsi_table_header = register_sysctl_table(scsi_root_table);
  43         if (!scsi_table_header)
  44                 return -ENOMEM;
  45         return 0;
  46 }
  47
  48 void scsi_exit_sysctl(void)
  49 {
  50         unregister_sysctl_table(scsi_table_header);
  51 }