/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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 2014 Garrett D'Amore <garrett@damore.org>
 *
 * Copyright 2008 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_PRIOCNTL_H
#define _SYS_PRIOCNTL_H

#include <sys/types.h>
#include <sys/procset.h>

#ifdef  __cplusplus
extern "C" {
#endif

#define PC_VERSION      1       /* First version of priocntl */

extern long     priocntl(idtype_t, id_t, int, ...);
extern long     priocntlset(procset_t *, int, ...);

/*
 * The following are the possible values of the command
 * argument for the priocntl system call.
 */

#define PC_GETCID       0       /* Get class ID */
#define PC_GETCLINFO    1       /* Get info about a configured class */
#define PC_SETPARMS     2       /* Set scheduling parameters */
#define PC_GETPARMS     3       /* Get scheduling parameters */
#define PC_ADMIN        4       /* Scheduler administration (used by */
                                /* dispadmin(8), not for general use) */
#define PC_GETPRIRANGE  5       /* Get priority range for a class */
                                /* posix.4 scheduling, not for general use */
#define PC_DONICE       6       /* Set or get nice value */
#define PC_SETXPARMS    7       /* Set extended scheduling parameters */
#define PC_GETXPARMS    8       /* Get extended scheduling parameters */
#define PC_SETDFLCL     9       /* Set default class, not for general use */
#define PC_GETDFLCL     10      /* Get default class, not for general use */
#define PC_DOPRIO       11      /* Set or get priority, not for general use */

#define PC_CLNULL       -1

#define PC_CLNMSZ       16
#define PC_CLINFOSZ     (32 / sizeof (int))
#define PC_CLPARMSZ     (32 / sizeof (int))

#define PC_GETNICE      0
#define PC_SETNICE      1

#define PC_GETPRIO      0
#define PC_SETPRIO      1

typedef struct pcinfo {
        id_t    pc_cid;                 /* class id */
        char    pc_clname[PC_CLNMSZ];   /* class name */
        int     pc_clinfo[PC_CLINFOSZ]; /* class information */
} pcinfo_t;

typedef struct pcparms {
        id_t    pc_cid;                     /* process class */
        int     pc_clparms[PC_CLPARMSZ];    /* class specific parameters */
} pcparms_t;

typedef struct pcnice {
        int     pc_val;                 /* nice value */
        int     pc_op;                  /* type of operation, set or get */
} pcnice_t;

typedef struct pcprio {
        int     pc_op;                  /* type of operation, set or get */
        id_t    pc_cid;                 /* class id */
        int     pc_val;                 /* priority value */
} pcprio_t;

/*
 * The following is used by the priocntl(2) varargs interface (command
 * codes: PC_SETXPARMS and PC_GETXPARMS).
 */

#define PC_VAPARMCNT    8       /* maximal number of (key, value) pairs */
#define PC_KY_NULL      0       /* terminates the (key, value) pair chain */
#define PC_KY_CLNAME    1       /* get the class name of a process or LWP. */

typedef struct pc_vaparm {
        int             pc_key;         /* describing key */
        u_longlong_t    pc_parm;        /* associated parameter */
} pc_vaparm_t;

typedef struct pc_vaparms {
        uint_t          pc_vaparmscnt;          /* # of (key, value) pairs */
        pc_vaparm_t     pc_parms[PC_VAPARMCNT]; /* parameter buffer */
} pc_vaparms_t;

#if defined(_SYSCALL32) && \
        _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4

/*
 * These structures are needed by the 64-bit kernel on certain architectures
 * to translate pc_vaparms_t/pc_vaparm_t data structures from 32-bit userland.
 */
#pragma pack(4)

typedef struct {
        int32_t         pc_key;         /* describing key */
        uint64_t        pc_parm;        /* associated parameter */
} pc_vaparm32_t;

#pragma pack()

typedef struct {
        uint32_t        pc_vaparmscnt;          /* # of (key, value) pairs */
        pc_vaparm32_t   pc_parms[PC_VAPARMCNT]; /* parameter buffer */
} pc_vaparms32_t;

#endif  /* _SYSCALL32 && ... */

/*
 * The following is used by libc for posix.4
 * scheduler interfaces and is not for general use.
 */

typedef struct pcpri {
        id_t    pc_cid;                 /* process class */
        pri_t   pc_clpmax;              /* class priority max */
        pri_t   pc_clpmin;              /* class priority min */
} pcpri_t;

/*
 * The following is used by the dispadmin(8) command for
 * scheduler administration and is not for general use.
 */

#ifdef _SYSCALL32
/* Data structure for ILP32 clients */
typedef struct pcadmin32 {
        id32_t          pc_cid;
        caddr32_t       pc_cladmin;
} pcadmin32_t;
#endif  /* _SYSCALL32 */

typedef struct pcadmin {
        id_t    pc_cid;
        caddr_t pc_cladmin;
} pcadmin_t;

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_PRIOCNTL_H */