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_ */ 130