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 #include <sys/ioccom.h>
  38
  39 #ifndef _SYS_QUEUE_H_
  40 #include <sys/queue.h>
  41 #endif
  42 #ifndef _SYS_TYPES_H_
  43 #include <sys/types.h>
  44 #endif
  45
  46 #define DEVFS_MAX_POLICY_LENGTH 32
  47
  48 struct devfs_rule {
  49         u_long  rule_type;
  50         u_long  rule_cmd;
  51
  52         char    *mntpoint;
  53         u_char  mntpointlen;
  54
  55         char    *name;
  56         u_char  namlen;
  57
  58         char    *linkname;
  59         u_char  linknamlen;
  60
  61
  62         u_long  dev_type;       /* Type of device to which the rule applies */
  63         u_short mode;           /* files access mode and type */
  64         uid_t   uid;            /* owner user id */
  65         gid_t   gid;            /* owner group id */
  66
  67         TAILQ_ENTRY(devfs_rule)         link;
  68 };
  69
  70 struct devfs_rule_ioctl {
  71         u_long  rule_type;
  72         u_long  rule_cmd;
  73
  74         char    mntpoint[PATH_MAX];
  75
  76         char    name[PATH_MAX];
  77
  78         char    linkname[PATH_MAX];
  79
  80         u_long  dev_type;       /* Type of device to which the rule applies */
  81         u_short mode;           /* files access mode and type */
  82         uid_t   uid;            /* owner user id */
  83         gid_t   gid;            /* owner group id */
  84 };
  85
  86 #define DEVFS_RULE_NAME         0x01
  87 #define DEVFS_RULE_TYPE         0x02
  88 #define DEVFS_RULE_JAIL         0x04
  89
  90 #define DEVFS_RULE_LINK         0x01
  91 #define DEVFS_RULE_HIDE         0x02
  92 #define DEVFS_RULE_SHOW         0x04
  93 #define DEVFS_RULE_PERM         0x08
  94
  95 #define DEVFS_RULE_ADD          _IOWR('d', 221, struct devfs_rule_ioctl)
  96 #define DEVFS_RULE_APPLY        _IOWR('d', 222, struct devfs_rule_ioctl)
  97 #define DEVFS_RULE_CLEAR        _IOWR('d', 223, struct devfs_rule_ioctl)
  98 #define DEVFS_RULE_RESET        _IOWR('d', 224, struct devfs_rule_ioctl)
  99
 100 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
 101
 102 #ifndef _SYS_DEVFS_H_
 103 #include <sys/devfs.h>
 104 #endif
 105
 106 TAILQ_HEAD(devfs_rule_head, devfs_rule);
 107
 108
 109 void *devfs_rule_check_apply(struct devfs_node *, void *);
 110 void *devfs_rule_reset_node(struct devfs_node *, void *);
 111 #endif /* _KERNEL */
 112 #endif /* _SYS_DEVFS_RULES_H_ */