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/fs/ptyfs/ptyfs.h

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    1 /*      $NetBSD: ptyfs.h,v 1.3 2004/12/16 05:30:18 atatat Exp $ */
    2 
    3 /*
    4  * Copyright (c) 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * This code is derived from software contributed to Berkeley by
    8  * Jan-Simon Pendry.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. Neither the name of the University nor the names of its contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  *      @(#)procfs.h    8.9 (Berkeley) 5/14/95
   35  */
   36 
   37 /*
   38  * Copyright (c) 1993 Jan-Simon Pendry
   39  *
   40  * This code is derived from software contributed to Berkeley by
   41  * Jan-Simon Pendry.
   42  *
   43  * Redistribution and use in source and binary forms, with or without
   44  * modification, are permitted provided that the following conditions
   45  * are met:
   46  * 1. Redistributions of source code must retain the above copyright
   47  *    notice, this list of conditions and the following disclaimer.
   48  * 2. Redistributions in binary form must reproduce the above copyright
   49  *    notice, this list of conditions and the following disclaimer in the
   50  *    documentation and/or other materials provided with the distribution.
   51  * 3. All advertising materials mentioning features or use of this software
   52  *    must display the following acknowledgement:
   53  *      This product includes software developed by the University of
   54  *      California, Berkeley and its contributors.
   55  * 4. Neither the name of the University nor the names of its contributors
   56  *    may be used to endorse or promote products derived from this software
   57  *    without specific prior written permission.
   58  *
   59  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   69  * SUCH DAMAGE.
   70  *
   71  *      @(#)procfs.h    8.9 (Berkeley) 5/14/95
   72  */
   73 
   74 #ifdef _KERNEL
   75 /*
   76  * The different types of node in a ptyfs filesystem
   77  */
   78 typedef enum {
   79         PTYFSpts,       /* The slave side of a pty */
   80         PTYFSptc,       /* The controlling side of a pty */
   81         PTYFSroot,      /* the filesystem root */
   82 } ptyfstype;
   83 
   84 /*
   85  * control data for the proc file system.
   86  */
   87 struct ptyfsnode {
   88         LIST_ENTRY(ptyfsnode) ptyfs_hash;       /* hash chain */
   89         struct vnode    *ptyfs_vnode;   /* vnode associated with this ptyfsnode */
   90         ptyfstype       ptyfs_type;     /* type of ptyfs node */
   91         int             ptyfs_pty;      /* the pty index */
   92         u_long          ptyfs_fileno;   /* unique file id */
   93         int             ptyfs_flag;     /* status flag for times */
   94 #define PTYFS_ACCESS    1
   95 #define PTYFS_MODIFY    2
   96 #define PTYFS_CHANGE    4
   97         /* Attribute information */
   98         uid_t           ptyfs_uid;
   99         gid_t           ptyfs_gid;
  100         mode_t          ptyfs_mode;
  101         int             ptyfs_flags;
  102         struct timespec ptyfs_ctime, ptyfs_mtime, ptyfs_atime, ptyfs_birthtime;
  103 };
  104 
  105 struct ptyfsmount {
  106         gid_t pmnt_gid;
  107         mode_t pmnt_mode;
  108 };
  109 
  110 #define VFSTOPTY(mp)    ((struct ptyfsmount *)(mp)->mnt_data)
  111 
  112 #endif /* _KERNEL */
  113 
  114 struct ptyfs_args {
  115         int version;
  116         gid_t gid;
  117         mode_t mode;
  118 };
  119 
  120 #define PTYFS_ARGSVERSION       1
  121 
  122 /*
  123  * Kernel stuff follows
  124  */
  125 #ifdef _KERNEL
  126 
  127 #define UIO_MX 32
  128 
  129 #define PTYFS_FILENO(pty, type) \
  130     ((type == PTYFSroot) ? 2 : \
  131      ((((pty) + 1) * 2 + (((type) == PTYFSpts) ? 1 : 2))))
  132 
  133 #define PTYFS_MAKEDEV(ptyfs) \
  134     pty_makedev((ptyfs)->ptyfs_type == PTYFSpts ? 't' : 'p', (ptyfs)->ptyfs_pty)
  135 
  136 /*
  137  * Convert between ptyfsnode vnode
  138  */
  139 #define VTOPTYFS(vp)    ((struct ptyfsnode *)(vp)->v_data)
  140 #define PTYFSTOV(ptyfs) ((ptyfs)->ptyfs_vnode)
  141 
  142 int ptyfs_freevp(struct vnode *);
  143 int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int,
  144     struct proc *);
  145 void ptyfs_hashinit(void);
  146 void ptyfs_hashreinit(void);
  147 void ptyfs_hashdone(void);
  148 
  149 extern int (**ptyfs_vnodeop_p)(void *);
  150 extern struct vfsops ptyfs_vfsops;
  151 
  152 int     ptyfs_root(struct mount *, struct vnode **);
  153 
  154 #ifdef SYSCTL_SETUP_PROTO
  155 SYSCTL_SETUP_PROTO(sysctl_vfs_ptyfs_setup);
  156 #endif /* SYSCTL_SETUP_PROTO */
  157 #endif /* _KERNEL */

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