FreeBSD/Linux Kernel Cross Reference
sys/fs/ptyfs/ptyfs.h

     /*      $NetBSD: ptyfs.h,v 1.7 2008/06/28 01:34:05 rumble Exp $ */
     
     /*
      * Copyright (c) 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * This code is derived from software contributed to Berkeley by
      * Jan-Simon Pendry.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)procfs.h    8.9 (Berkeley) 5/14/95
     */
    
    /*
     * Copyright (c) 1993 Jan-Simon Pendry
     *
     * This code is derived from software contributed to Berkeley by
     * Jan-Simon Pendry.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)procfs.h    8.9 (Berkeley) 5/14/95
     */
    
    #ifndef _FS_PTYFS_PTYFS_H_
    #define _FS_PTYFS_PTYFS_H_
    
    #ifdef _KERNEL
    /*
     * The different types of node in a ptyfs filesystem
     */
    typedef enum {
            PTYFSpts,       /* The slave side of a pty */
            PTYFSptc,       /* The controlling side of a pty */
            PTYFSroot,      /* the filesystem root */
    } ptyfstype;
    
    /*
     * control data for the proc file system.
     */
    struct ptyfsnode {
            LIST_ENTRY(ptyfsnode) ptyfs_hash;       /* hash chain */
            struct vnode    *ptyfs_vnode;   /* vnode associated with this ptyfsnode */
            ptyfstype       ptyfs_type;     /* type of ptyfs node */
            int             ptyfs_pty;      /* the pty index */
            u_long          ptyfs_fileno;   /* unique file id */
            int             ptyfs_flag;     /* status flag for times */
    #define PTYFS_ACCESS    1
    #define PTYFS_MODIFY    2
    #define PTYFS_CHANGE    4
           /* Attribute information */
           uid_t           ptyfs_uid;
           gid_t           ptyfs_gid;
           mode_t          ptyfs_mode;
           int             ptyfs_flags;
           struct timespec ptyfs_ctime, ptyfs_mtime, ptyfs_atime, ptyfs_birthtime;
   };
   
   struct ptyfsmount {
           gid_t pmnt_gid;
           mode_t pmnt_mode;
   };
   
   #define VFSTOPTY(mp)    ((struct ptyfsmount *)(mp)->mnt_data)
   
   #endif /* _KERNEL */
   
   struct ptyfs_args {
           int version;
           gid_t gid;
           mode_t mode;
   };
   
   #define PTYFS_ARGSVERSION       1
   
   /*
    * Kernel stuff follows
    */
   #ifdef _KERNEL
   
   #define UIO_MX 32
   
   #define PTYFS_FILENO(pty, type) \
       ((type == PTYFSroot) ? 2 : \
        ((((pty) + 1) * 2 + (((type) == PTYFSpts) ? 1 : 2))))
   
   #define PTYFS_MAKEDEV(ptyfs) \
       pty_makedev((ptyfs)->ptyfs_type == PTYFSpts ? 't' : 'p', (ptyfs)->ptyfs_pty)
   
   #define PTYFS_ITIMES(ptyfs, acc, mod, cre) \
      while ((ptyfs)->ptyfs_flag & (PTYFS_ACCESS|PTYFS_CHANGE|PTYFS_MODIFY)) \
           ptyfs_itimes(ptyfs, acc, mod, cre)
   /*
    * Convert between ptyfsnode vnode
    */
   #define VTOPTYFS(vp)    ((struct ptyfsnode *)(vp)->v_data)
   #define PTYFSTOV(ptyfs) ((ptyfs)->ptyfs_vnode)
   
   int ptyfs_freevp(struct vnode *);
   int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int,
       struct lwp *);
   void ptyfs_hashinit(void);
   void ptyfs_hashreinit(void);
   void ptyfs_hashdone(void);
   void ptyfs_itimes(struct ptyfsnode *, const struct timespec *,
       const struct timespec *, const struct timespec *);
   
   extern int (**ptyfs_vnodeop_p)(void *);
   extern struct vfsops ptyfs_vfsops;
   
   int     ptyfs_root(struct mount *, struct vnode **);
   
   #endif /* _KERNEL */
   #endif /* _FS_PTYFS_PTYFS_H_ */

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