The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/resourcevar.h

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    1 /*      $NetBSD: resourcevar.h,v 1.52 2011/05/14 17:57:05 rmind 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 
   43 /*
   44  * Kernel per-process accounting / statistics
   45  */
   46 struct pstats {
   47 #define pstat_startzero p_ru
   48         struct  rusage p_ru;            /* stats for this proc */
   49         struct  rusage p_cru;           /* sum of stats for reaped children */
   50 #define pstat_endzero   pstat_startcopy
   51 
   52 #define pstat_startcopy p_timer
   53         struct  itimerspec p_timer[3];  /* virtual-time timers */
   54 
   55         struct uprof {                  /* profile arguments */
   56                 char *  pr_base;        /* buffer base */
   57                 size_t  pr_size;        /* buffer size */
   58                 u_long  pr_off;         /* pc offset */
   59                 u_int   pr_scale;       /* pc scaling */
   60                 u_long  pr_addr;        /* temp storage for addr until AST */
   61                 u_long  pr_ticks;       /* temp storage for ticks until AST */
   62         } p_prof;
   63 #define pstat_endcopy   p_start
   64         struct  timeval p_start;        /* starting time */
   65 };
   66 
   67 #ifdef _KERNEL
   68 
   69 /*
   70  * Process resource limits.  Since this structure is moderately large,
   71  * but changes infrequently, it is shared copy-on-write after forks.
   72  *
   73  * When a separate copy is created, then 'pl_writeable' is set to true,
   74  * and 'pl_sv_limit' is pointed to the old proc_t::p_limit structure.
   75  */
   76 struct plimit {
   77         struct rlimit   pl_rlimit[RLIM_NLIMITS];
   78         char *          pl_corename;
   79         size_t          pl_cnlen;
   80         u_int           pl_refcnt;
   81         bool            pl_writeable;
   82         kmutex_t        pl_lock;
   83         struct plimit * pl_sv_limit;
   84 };
   85 
   86 /* add user profiling from AST XXXSMP */
   87 #define ADDUPROF(l)                                                     \
   88         do {                                                            \
   89                 struct proc *_p = (l)->l_proc;                          \
   90                 addupc_task((l),                                        \
   91                     _p->p_stats->p_prof.pr_addr,                        \
   92                     _p->p_stats->p_prof.pr_ticks);                      \
   93                 _p->p_stats->p_prof.pr_ticks = 0;                       \
   94         } while (/* CONSTCOND */ 0)
   95 
   96 extern char defcorename[];
   97 
   98 extern int security_setidcore_dump;
   99 extern char security_setidcore_path[];
  100 extern uid_t security_setidcore_owner;
  101 extern gid_t security_setidcore_group;
  102 extern mode_t security_setidcore_mode;
  103 
  104 void    addupc_intr(struct lwp *, u_long);
  105 void    addupc_task(struct lwp *, u_long, u_int);
  106 void    calcru(struct proc *, struct timeval *, struct timeval *,
  107             struct timeval *, struct timeval *);
  108 
  109 struct plimit *lim_copy(struct plimit *);
  110 void    lim_addref(struct plimit *);
  111 void    lim_privatise(struct proc *);
  112 void    lim_setcorename(struct proc *, char *, size_t);
  113 void    lim_free(struct plimit *);
  114 
  115 void    resource_init(void);
  116 void    ruadd(struct rusage *, struct rusage *);
  117 void    rulwps(proc_t *, struct rusage *);
  118 struct  pstats *pstatscopy(struct pstats *);
  119 void    pstatsfree(struct pstats *);
  120 extern const rlim_t maxdmap;
  121 extern const rlim_t maxsmap;
  122 
  123 #endif
  124 
  125 #endif  /* !_SYS_RESOURCEVAR_H_ */

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