The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/devfs_rules.h

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    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_ */

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