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 1.16 2008/05/08 01:26:01 dillon Exp $
  36  */
  37
  38 #ifndef _SYS_RESOURCEVAR_H_
  39 #define _SYS_RESOURCEVAR_H_
  40
  41 #ifndef _SYS_TYPES_H_
  42 #include <sys/types.h>
  43 #endif
  44 #ifndef _SYS_RESOURCE_H_
  45 #include <sys/resource.h>
  46 #endif
  47 #ifndef _SYS_QUEUE_H_
  48 #include <sys/queue.h>
  49 #endif
  50 #ifndef _SYS_VARSYM_H_
  51 #include <sys/varsym.h>
  52 #endif
  53 #ifndef _SYS_TIME_H_
  54 #include <sys/time.h>
  55 #endif
  56 #ifndef _SYS_SPINLOCK_H_
  57 #include <sys/spinlock.h>
  58 #endif
  59
  60 struct uprof {                  /* profile arguments */
  61         caddr_t pr_base;        /* buffer base */
  62         u_long  pr_size;        /* buffer size */
  63         u_long  pr_off;         /* pc offset */
  64         u_long  pr_scale;       /* pc scaling */
  65         u_long  pr_addr;        /* temp storage for addr until AST */
  66         u_long  pr_ticks;       /* temp storage for ticks until AST */
  67 };
  68
  69 /*
  70  * Kernel shareable process resource limits.  Because this structure
  71  * is moderately large but changes infrequently, it is normally
  72  * shared copy-on-write after forks.
  73  *
  74  * Threaded programs force p_exclusive (set it to 2) to prevent the
  75  * proc->p_limit pointer from changing out from under threaded access.
  76  */
  77 struct plimit {
  78         struct  rlimit pl_rlimit[RLIM_NLIMITS];
  79         int     p_refcnt;               /* number of references */
  80         int     p_exclusive;            /* exclusive to proc due to lwp's */
  81         rlim_t  p_cpulimit;             /* current cpu limit in usec */
  82         struct spinlock p_spin;
  83 };
  84
  85 #define PLIMIT_TESTCPU_OK       0
  86 #define PLIMIT_TESTCPU_XCPU     1
  87 #define PLIMIT_TESTCPU_KILL     2
  88
  89 /*
  90  * Per uid resource consumption
  91  */
  92 struct uidinfo {
  93         LIST_ENTRY(uidinfo) ui_hash;
  94         rlim_t  ui_sbsize;              /* socket buffer space consumed */
  95         long    ui_proccnt;             /* number of processes */
  96         uid_t   ui_uid;                 /* uid */
  97         int     ui_ref;                 /* reference count */
  98         int     ui_posixlocks;          /* number of POSIX locks */
  99         struct varsymset ui_varsymset;  /* variant symlinks */
 100 };
 101
 102 #ifdef _KERNEL
 103
 104 struct proc;
 105 struct lwp;
 106
 107 void    addupc_intr (struct proc *p, u_long pc, u_int ticks);
 108 void    addupc_task (struct proc *p, u_long pc, u_int ticks);
 109 void    calcru (struct lwp *lp, struct timeval *up, struct timeval *sp);
 110 void    calcru_proc (struct proc *p, struct rusage *ru);
 111 int     chgproccnt (struct uidinfo *uip, int diff, int max);
 112 int     chgsbsize (struct uidinfo *uip, u_long *hiwat, u_long to, rlim_t max);
 113 void    ruadd (struct rusage *ru, struct rusage *ru2);
 114 struct uidinfo *uifind (uid_t uid);
 115 void    uihold (struct uidinfo *uip);
 116 void    uidrop (struct uidinfo *uip);
 117 void    uireplace (struct uidinfo **puip, struct uidinfo *nuip);
 118 void    uihashinit (void);
 119
 120 void plimit_init0(struct plimit *);
 121 struct plimit *plimit_fork(struct proc *);
 122 void plimit_lwp_fork(struct proc *);
 123 int plimit_testcpulimit(struct plimit *, u_int64_t);
 124 void plimit_modify(struct proc *, int, struct rlimit *);
 125 void plimit_free(struct proc *);
 126
 127 #endif
 128
 129 #endif  /* !_SYS_RESOURCEVAR_H_ */