sys/sys/resourcevar.h

   1 /*
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)resourcevar.h       8.4 (Berkeley) 1/9/95
  34  * $FreeBSD: src/sys/sys/resourcevar.h,v 1.16.2.1 2000/09/07 19:13:55 truckman Exp $
  35  * $DragonFly: src/sys/sys/resourcevar.h,v 1.11 2005/10/08 12:24:26 corecode Exp $
  36  */
  37
  38 #ifndef _SYS_RESOURCEVAR_H_
  39 #define _SYS_RESOURCEVAR_H_
  40
  41 #include <sys/resource.h>
  42 #include <sys/queue.h>
  43
  44 #ifndef _SYS_VARSYM_H_
  45 #include <sys/varsym.h>
  46 #endif
  47
  48 /*
  49  * Kernel per-process accounting / statistics
  50  * (not necessarily resident except when running).
  51  */
  52 struct pstats {
  53         struct  rusage p_ru;            /* stats for this proc */
  54         struct  rusage p_cru;           /* sum of stats for reaped children */
  55 };
  56
  57 struct uprof {                  /* profile arguments */
  58         caddr_t pr_base;        /* buffer base */
  59         u_long  pr_size;        /* buffer size */
  60         u_long  pr_off;         /* pc offset */
  61         u_long  pr_scale;       /* pc scaling */
  62         u_long  pr_addr;        /* temp storage for addr until AST */
  63         u_long  pr_ticks;       /* temp storage for ticks until AST */
  64 };
  65
  66 /*
  67  * Kernel shareable process resource limits.  Because this structure
  68  * is moderately large but changes infrequently, it is normally
  69  * shared copy-on-write after forks.  If a group of processes
  70  * ("threads") share modifications, the PL_SHAREMOD flag is set,
  71  * and a copy must be made for the child of a new fork that isn't
  72  * sharing modifications to the limits.
  73  */
  74 struct plimit {
  75         struct  rlimit pl_rlimit[RLIM_NLIMITS];
  76 #define PL_SHAREMOD     0x01            /* modifications are shared */
  77         int     p_lflags;
  78         int     p_refcnt;               /* number of references */
  79         rlim_t  p_cpulimit;             /* current cpu limit in usec */
  80 };
  81
  82 /*
  83  * Per uid resource consumption
  84  */
  85 struct uidinfo {
  86         LIST_ENTRY(uidinfo) ui_hash;
  87         rlim_t  ui_sbsize;              /* socket buffer space consumed */
  88         long    ui_proccnt;             /* number of processes */
  89         uid_t   ui_uid;                 /* uid */
  90         int     ui_ref;                 /* reference count */
  91         int     ui_posixlocks;          /* number of POSIX locks */
  92         struct varsymset ui_varsymset;  /* variant symlinks */
  93 };
  94
  95 #ifdef _KERNEL
  96
  97 struct proc;
  98
  99 void    addupc_intr (struct proc *p, u_long pc, u_int ticks);
 100 void    addupc_task (struct proc *p, u_long pc, u_int ticks);
 101 void    calcru (struct proc *p, struct timeval *up, struct timeval *sp,
 102             struct timeval *ip);
 103 int     chgproccnt (struct uidinfo *uip, int diff, int max);
 104 int     chgsbsize (struct uidinfo *uip, u_long *hiwat, u_long to, rlim_t max);
 105 int     fuswintr (void *base);
 106 struct plimit *limcopy (struct plimit *lim);
 107 void    ruadd (struct rusage *ru, struct rusage *ru2);
 108 int     suswintr (void *base, int word);
 109 struct uidinfo *uifind (uid_t uid);
 110 void    uihold (struct uidinfo *uip);
 111 void    uidrop (struct uidinfo *uip);
 112 void    uireplace (struct uidinfo **puip, struct uidinfo *nuip);
 113 void    uihashinit (void);
 114 #endif
 115
 116 #endif  /* !_SYS_RESOURCEVAR_H_ */