include/splat-ctl.h

   1 /*****************************************************************************\
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *  For details, see <http://zfsonlinux.org/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23 \*****************************************************************************/
  24
  25 #ifndef _SPLAT_CTL_H
  26 #define _SPLAT_CTL_H
  27
  28 #include <linux/types.h>
  29
  30 /*
  31  * Contains shared definitions for both user space and kernel space.  To
  32  * ensure 32-bit/64-bit interoperability over ioctl()'s only types with
  33  * fixed sizes can be used.
  34  */
  35 #define SPLAT_NAME                      "splatctl"
  36 #define SPLAT_DEV                       "/dev/splatctl"
  37
  38 #define SPLAT_NAME_SIZE                 20
  39 #define SPLAT_DESC_SIZE                 60
  40
  41 typedef struct splat_user {
  42         char name[SPLAT_NAME_SIZE];     /* Short name */
  43         char desc[SPLAT_DESC_SIZE];     /* Short description */
  44         __u32 id;                       /* Unique numeric id */
  45 } splat_user_t;
  46
  47 #define SPLAT_CFG_MAGIC                 0x15263748U
  48 typedef struct splat_cfg {
  49         __u32 cfg_magic;                /* Unique magic */
  50         __u32 cfg_cmd;                  /* Configure command */
  51         __s32 cfg_arg1;                 /* Configure command arg 1 */
  52         __s32 cfg_rc1;                  /* Configure response 1 */
  53         union {
  54                 struct {
  55                         __u32 size;
  56                         splat_user_t descs[0];
  57                 } splat_subsystems;
  58                 struct {
  59                         __u32 size;
  60                         splat_user_t descs[0];
  61                 } splat_tests;
  62         } cfg_data;
  63 } splat_cfg_t;
  64
  65 #define SPLAT_CMD_MAGIC                 0x9daebfc0U
  66 typedef struct splat_cmd {
  67         __u32 cmd_magic;                /* Unique magic */
  68         __u32 cmd_subsystem;            /* Target subsystem */
  69         __u32 cmd_test;                 /* Subsystem test */
  70         __u32 cmd_data_size;            /* Opaque data size */
  71         char cmd_data_str[0];           /* Opaque data region */
  72 } splat_cmd_t;
  73
  74 /* Valid ioctls */
  75 #define SPLAT_CFG                       _IOWR('f', 101, splat_cfg_t)
  76 #define SPLAT_CMD                       _IOWR('f', 102, splat_cmd_t)
  77
  78 /* Valid configuration commands */
  79 #define SPLAT_CFG_BUFFER_CLEAR          0x001   /* Clear text buffer */
  80 #define SPLAT_CFG_BUFFER_SIZE           0x002   /* Resize text buffer */
  81 #define SPLAT_CFG_SUBSYSTEM_COUNT       0x101   /* Number of subsystem */
  82 #define SPLAT_CFG_SUBSYSTEM_LIST        0x102   /* List of N subsystems */
  83 #define SPLAT_CFG_TEST_COUNT            0x201   /* Number of tests */
  84 #define SPLAT_CFG_TEST_LIST             0x202   /* List of N tests */
  85
  86 /*
  87  * Valid subsystem and test commands are defined in each subsystem as
  88  * SPLAT_SUBSYSTEM_*.  We do need to be careful to avoid collisions, the
  89  * currently defined subsystems are as follows:
  90  */
  91 #define SPLAT_SUBSYSTEM_KMEM            0x0100
  92 #define SPLAT_SUBSYSTEM_TASKQ           0x0200
  93 #define SPLAT_SUBSYSTEM_KRNG            0x0300
  94 #define SPLAT_SUBSYSTEM_MUTEX           0x0400
  95 #define SPLAT_SUBSYSTEM_CONDVAR         0x0500
  96 #define SPLAT_SUBSYSTEM_THREAD          0x0600
  97 #define SPLAT_SUBSYSTEM_RWLOCK          0x0700
  98 #define SPLAT_SUBSYSTEM_TIME            0x0800
  99 #define SPLAT_SUBSYSTEM_VNODE           0x0900
 100 #define SPLAT_SUBSYSTEM_KOBJ            0x0a00
 101 #define SPLAT_SUBSYSTEM_ATOMIC          0x0b00
 102 #define SPLAT_SUBSYSTEM_LIST            0x0c00
 103 #define SPLAT_SUBSYSTEM_GENERIC         0x0d00
 104 #define SPLAT_SUBSYSTEM_CRED            0x0e00
 105 #define SPLAT_SUBSYSTEM_ZLIB            0x0f00
 106 #define SPLAT_SUBSYSTEM_LINUX           0x1000
 107 #define SPLAT_SUBSYSTEM_UNKNOWN         0xff00
 108
 109 #endif /* _SPLAT_CTL_H */