sys/sys/devfs_rules.h

   1 /*
   2  * Copyright (c) 2009 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Alex Hornung <ahornung@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34 #ifndef _SYS_DEVFS_RULES_H_
  35 #define _SYS_DEVFS_RULES_H_
  36
  37 #ifndef _SYS_QUEUE_H_
  38 #include <sys/queue.h>
  39 #endif
  40 #ifndef _SYS_TYPES_H_
  41 #include <sys/types.h>
  42 #endif
  43
  44 #define DEVFS_MAX_POLICY_LENGTH 32
  45
  46 struct devfs_rule {
  47         u_long  rule_type;
  48         u_long  rule_cmd;
  49
  50         char    *mntpoint;
  51         u_char  mntpointlen;
  52
  53         char    *name;
  54         u_char  namlen;
  55
  56         char    *linkname;
  57         u_char  linknamlen;
  58
  59
  60         u_long  dev_type;       /* Type of device to which the rule applies */
  61         u_short mode;           /* files access mode and type */
  62         uid_t   uid;            /* owner user id */
  63         gid_t   gid;            /* owner group id */
  64
  65         TAILQ_ENTRY(devfs_rule)         link;
  66 };
  67
  68 struct devfs_rule_ioctl {
  69         u_long  rule_type;
  70         u_long  rule_cmd;
  71
  72         char    mntpoint[PATH_MAX];
  73
  74         char    name[PATH_MAX];
  75
  76         char    linkname[PATH_MAX];
  77
  78         u_long  dev_type;       /* Type of device to which the rule applies */
  79         u_short mode;           /* files access mode and type */
  80         uid_t   uid;            /* owner user id */
  81         gid_t   gid;            /* owner group id */
  82 };
  83
  84 #define DEVFS_RULE_NAME         0x01
  85 #define DEVFS_RULE_TYPE         0x02
  86 #define DEVFS_RULE_JAIL         0x04
  87
  88 #define DEVFS_RULE_LINK         0x01
  89 #define DEVFS_RULE_HIDE         0x02
  90 #define DEVFS_RULE_SHOW         0x04
  91 #define DEVFS_RULE_PERM         0x08
  92
  93 #define DEVFS_RULE_ADD          _IOWR('d', 221, struct devfs_rule_ioctl)
  94 #define DEVFS_RULE_APPLY        _IOWR('d', 222, struct devfs_rule_ioctl)
  95 #define DEVFS_RULE_CLEAR        _IOWR('d', 223, struct devfs_rule_ioctl)
  96 #define DEVFS_RULE_RESET        _IOWR('d', 224, struct devfs_rule_ioctl)
  97
  98 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
  99
 100 #ifndef _SYS_DEVFS_H_
 101 #include <sys/devfs.h>
 102 #endif
 103
 104 TAILQ_HEAD(devfs_rule_head, devfs_rule);
 105
 106
 107 void *devfs_rule_check_apply(struct devfs_node *, void *);
 108 void *devfs_rule_reset_node(struct devfs_node *, void *);
 109 #endif /* _KERNEL */
 110 #endif /* _SYS_DEVFS_RULES_H_ */