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 1.6 2005/12/11 12:24:29 christos 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 #ifndef _FS_PTYFS_PTYFS_H_
   75 #define _FS_PTYFS_PTYFS_H_
   76 
   77 #ifdef _KERNEL
   78 /*
   79  * The different types of node in a ptyfs filesystem
   80  */
   81 typedef enum {
   82         PTYFSpts,       /* The slave side of a pty */
   83         PTYFSptc,       /* The controlling side of a pty */
   84         PTYFSroot,      /* the filesystem root */
   85 } ptyfstype;
   86 
   87 /*
   88  * control data for the proc file system.
   89  */
   90 struct ptyfsnode {
   91         LIST_ENTRY(ptyfsnode) ptyfs_hash;       /* hash chain */
   92         struct vnode    *ptyfs_vnode;   /* vnode associated with this ptyfsnode */
   93         ptyfstype       ptyfs_type;     /* type of ptyfs node */
   94         int             ptyfs_pty;      /* the pty index */
   95         u_long          ptyfs_fileno;   /* unique file id */
   96         int             ptyfs_flag;     /* status flag for times */
   97 #define PTYFS_ACCESS    1
   98 #define PTYFS_MODIFY    2
   99 #define PTYFS_CHANGE    4
  100         /* Attribute information */
  101         uid_t           ptyfs_uid;
  102         gid_t           ptyfs_gid;
  103         mode_t          ptyfs_mode;
  104         int             ptyfs_flags;
  105         struct timespec ptyfs_ctime, ptyfs_mtime, ptyfs_atime, ptyfs_birthtime;
  106 };
  107 
  108 struct ptyfsmount {
  109         gid_t pmnt_gid;
  110         mode_t pmnt_mode;
  111 };
  112 
  113 #define VFSTOPTY(mp)    ((struct ptyfsmount *)(mp)->mnt_data)
  114 
  115 #endif /* _KERNEL */
  116 
  117 struct ptyfs_args {
  118         int version;
  119         gid_t gid;
  120         mode_t mode;
  121 };
  122 
  123 #define PTYFS_ARGSVERSION       1
  124 
  125 /*
  126  * Kernel stuff follows
  127  */
  128 #ifdef _KERNEL
  129 
  130 #define UIO_MX 32
  131 
  132 #define PTYFS_FILENO(pty, type) \
  133     ((type == PTYFSroot) ? 2 : \
  134      ((((pty) + 1) * 2 + (((type) == PTYFSpts) ? 1 : 2))))
  135 
  136 #define PTYFS_MAKEDEV(ptyfs) \
  137     pty_makedev((ptyfs)->ptyfs_type == PTYFSpts ? 't' : 'p', (ptyfs)->ptyfs_pty)
  138 
  139 #define PTYFS_ITIMES(ptyfs, acc, mod, cre) \
  140    while ((ptyfs)->ptyfs_flag & (PTYFS_ACCESS|PTYFS_CHANGE|PTYFS_MODIFY)) \
  141         ptyfs_itimes(ptyfs, acc, mod, cre)
  142 /*
  143  * Convert between ptyfsnode vnode
  144  */
  145 #define VTOPTYFS(vp)    ((struct ptyfsnode *)(vp)->v_data)
  146 #define PTYFSTOV(ptyfs) ((ptyfs)->ptyfs_vnode)
  147 
  148 int ptyfs_freevp(struct vnode *);
  149 int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int,
  150     struct lwp *);
  151 void ptyfs_hashinit(void);
  152 void ptyfs_hashreinit(void);
  153 void ptyfs_hashdone(void);
  154 void ptyfs_itimes(struct ptyfsnode *, const struct timespec *,
  155     const struct timespec *, const struct timespec *);
  156 
  157 extern int (**ptyfs_vnodeop_p)(void *);
  158 extern struct vfsops ptyfs_vfsops;
  159 
  160 int     ptyfs_root(struct mount *, struct vnode **);
  161 
  162 #ifdef SYSCTL_SETUP_PROTO
  163 SYSCTL_SETUP_PROTO(sysctl_vfs_ptyfs_setup);
  164 #endif /* SYSCTL_SETUP_PROTO */
  165 #endif /* _KERNEL */
  166 #endif /* _FS_PTYFS_PTYFS_H_ */

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