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      1 /*	$NetBSD: resourcevar.h,v 1.59 2024/05/12 10:34:56 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1991, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)resourcevar.h	8.4 (Berkeley) 1/9/95
     32  */
     33 
     34 #ifndef	_SYS_RESOURCEVAR_H_
     35 #define	_SYS_RESOURCEVAR_H_
     36 
     37 #if !defined(_KERNEL) && !defined(_KMEMUSER)
     38 #error "not supposed to be exposed to userland"
     39 #endif
     40 
     41 #include <sys/mutex.h>
     42 #include <sys/resource.h>
     43 
     44 struct bintime;
     45 
     46 /*
     47  * Kernel per-process accounting / statistics
     48  */
     49 struct uprof {				/* profile arguments */
     50 	char *	pr_base;		/* buffer base */
     51 	size_t  pr_size;		/* buffer size */
     52 	u_long	pr_off;			/* pc offset */
     53 	u_int   pr_scale;		/* pc scaling */
     54 	u_long	pr_addr;		/* temp storage for addr until AST */
     55 	u_long	pr_ticks;		/* temp storage for ticks until AST */
     56 };
     57 
     58 struct pstats {
     59 #define	pstat_startzero	p_ru
     60 	struct	rusage p_ru;		/* stats for this proc */
     61 	struct	rusage p_cru;		/* sum of stats for reaped children */
     62 #define	pstat_endzero	pstat_startcopy
     63 
     64 #define	pstat_startcopy	p_timer
     65 	struct	itimerspec p_timer[3];	/* virtual-time timers */
     66 	struct	uprof p_prof;			/* profile arguments */
     67 #define	pstat_endcopy	p_start
     68 	struct	timeval p_start;	/* starting time */
     69 };
     70 
     71 #ifdef _KERNEL
     72 
     73 /*
     74  * Process resource limits.  Since this structure is moderately large,
     75  * but changes infrequently, it is shared copy-on-write after forks.
     76  *
     77  * When a separate copy is created, then 'pl_writeable' is set to true,
     78  * and 'pl_sv_limit' is pointed to the old proc_t::p_limit structure.
     79  */
     80 struct plimit {
     81 	struct rlimit	pl_rlimit[RLIM_NLIMITS];
     82 	char *		pl_corename;
     83 	size_t		pl_cnlen;
     84 	u_int		pl_refcnt;
     85 	bool		pl_writeable;
     86 	kmutex_t	pl_lock;
     87 	struct plimit *	pl_sv_limit;
     88 };
     89 
     90 /* add user profiling from AST XXXSMP */
     91 #define	ADDUPROF(l)							\
     92 	do {								\
     93 		struct proc *_p = (l)->l_proc;				\
     94 		addupc_task((l),					\
     95 		    _p->p_stats->p_prof.pr_addr,			\
     96 		    _p->p_stats->p_prof.pr_ticks);			\
     97 		_p->p_stats->p_prof.pr_ticks = 0;			\
     98 	} while (0)
     99 
    100 extern char defcorename[];
    101 
    102 extern int security_setidcore_dump;
    103 extern char security_setidcore_path[];
    104 extern uid_t security_setidcore_owner;
    105 extern gid_t security_setidcore_group;
    106 extern mode_t security_setidcore_mode;
    107 
    108 void	addupc_intr(struct lwp *, u_long);
    109 void	addupc_task(struct lwp *, u_long, u_int);
    110 void	calcru(struct proc *, struct timeval *, struct timeval *,
    111 	    struct timeval *, struct timeval *);
    112 void	addrulwp(struct lwp *, struct bintime *);
    113 
    114 struct plimit *lim_copy(struct plimit *);
    115 void	lim_addref(struct plimit *);
    116 void	lim_privatise(struct proc *);
    117 void	lim_setcorename(struct proc *, char *, size_t);
    118 void	lim_free(struct plimit *);
    119 
    120 void	resource_init(void);
    121 void	ruspace(struct proc *);
    122 void	ruadd(struct rusage *, struct rusage *);
    123 void	rulwps(proc_t *, struct rusage *);
    124 struct	pstats *pstatscopy(struct pstats *);
    125 void	pstatsfree(struct pstats *);
    126 extern rlim_t maxdmap;
    127 extern rlim_t maxsmap;
    128 
    129 int	getrusage1(struct proc *, int, struct rusage *);
    130 
    131 #endif
    132 
    133 #endif	/* !_SYS_RESOURCEVAR_H_ */
    134