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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ifndef _SYS_SESSION_H
#define _SYS_SESSION_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct sess {
uint_t s_ref; /* reference count */
mode_t s_mode; /* /sess current permissions */
uid_t s_uid; /* /sess current user ID */
gid_t s_gid; /* /sess current group ID */
time_t s_ctime; /* /sess change time */
dev_t s_dev; /* tty's device number */
struct vnode *s_vp; /* tty's vnode */
struct pid *s_sidp; /* session ID info */
struct cred *s_cred; /* allocation credentials */
kmutex_t s_lock; /* sync s_vp use with freectty */
kcondvar_t s_wait_cv; /* Condvar for sleeping */
int s_cnt; /* # of active users of this session */
int s_flag; /* session state flag see below */
} sess_t;
#define SESS_CLOSE 1 /* session about to close */
#define s_sid s_sidp->pid_id
/*
* Enumeration of the types of access that can be requested for a
* controlling terminal under job control.
*/
enum jcaccess {
JCREAD, /* read data on a ctty */
JCWRITE, /* write data to a ctty */
JCSETP, /* set ctty parameters */
JCGETP /* get ctty parameters */
};
#if defined(_KERNEL)
extern sess_t session0;
#define SESS_HOLD(sp) (++(sp)->s_ref)
#define SESS_RELE(sp) sess_rele(sp)
/*
* Used to synchronizing sessions vnode users with freectty
*/
#define TTY_HOLD(sp) { \
mutex_enter(&(sp)->s_lock); \
(++(sp)->s_cnt); \
mutex_exit(&(sp)->s_lock); \
}
#define TTY_RELE(sp) { \
mutex_enter(&(sp)->s_lock); \
if ((--(sp)->s_cnt) == 0) \
cv_signal(&(sp)->s_wait_cv); \
mutex_exit(&(sp)->s_lock); \
}
/* forward referenced structure tags */
struct vnode;
struct cred;
struct proc;
extern void sess_rele(sess_t *);
extern void sess_create(void);
extern void freectty(sess_t *);
extern void alloctty(struct proc *, struct vnode *);
extern dev_t cttydev(struct proc *);
extern int hascttyperm(sess_t *, struct cred *, mode_t);
#endif /* defined(_KERNEL) */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SESSION_H */
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