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/* $NetBSD: ptyfs.h,v 1.16 2020/11/27 14:43:57 christos 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 ptyfskey {
ptyfstype ptk_type; /* type of ptyfs node */
int ptk_pty; /* the pty index */
};
struct ptyfsnode {
SLIST_ENTRY(ptyfsnode) ptyfs_hash; /* hash chain */
struct ptyfskey ptyfs_key;
#define ptyfs_type ptyfs_key.ptk_type
#define ptyfs_pty ptyfs_key.ptk_pty
u_long ptyfs_fileno; /* unique file id */
int ptyfs_status; /* 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 {
kmutex_t pmnt_lock;
TAILQ_ENTRY(ptyfsmount) pmnt_le;
struct mount *pmnt_mp;
gid_t pmnt_gid;
mode_t pmnt_mode;
int pmnt_flags;
int pmnt_bitmap_size;
uint8_t *pmnt_bitmap;
};
#define VFSTOPTY(mp) ((struct ptyfsmount *)(mp)->mnt_data)
#endif /* _KERNEL */
struct ptyfs_args {
int version;
gid_t gid;
mode_t mode;
int flags;
};
#define PTYFS_ARGSVERSION 2
/*
* Kernel stuff follows
*/
#ifdef _KERNEL
#define UIO_MX 32
#define PTYFS_FILENO(type, pty) \
((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_status & (PTYFS_ACCESS|PTYFS_CHANGE|PTYFS_MODIFY)) \
ptyfs_itimes(ptyfs, acc, mod, cre)
/*
* Convert between ptyfsnode vnode
*/
#define VTOPTYFS(vp) ((struct ptyfsnode *)(vp)->v_data)
void ptyfs_set_active(struct mount *, int);
void ptyfs_clr_active(struct mount *, int);
int ptyfs_next_active(struct mount *, int);
int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int);
void ptyfs_hashinit(void);
void ptyfs_hashdone(void);
struct ptyfsnode *ptyfs_get_node(ptyfstype, int);
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 *, int, struct vnode **);
#endif /* _KERNEL */
#endif /* _FS_PTYFS_PTYFS_H_ */
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