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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)resourcevar.h 8.4 (Berkeley) 1/9/95 30 * $FreeBSD$ 31 */ 32 33#ifndef _SYS_RESOURCEVAR_H_ 34#define _SYS_RESOURCEVAR_H_ 35 36#include <sys/resource.h> 37#include <sys/queue.h> 38#ifdef _KERNEL 39#include <sys/_lock.h> 40#include <sys/_mutex.h> 41#endif 42 43/* 44 * Kernel per-process accounting / statistics 45 * (not necessarily resident except when running). 46 * 47 * Locking key: 48 * b - created at fork, never changes 49 * c - locked by proc mtx 50 * j - locked by proc slock 51 * k - only accessed by curthread 52 */ 53struct pstats { 54#define pstat_startzero p_cru 55 struct rusage p_cru; /* Stats for reaped children. */ 56 struct itimerval p_timer[3]; /* (j) Virtual-time timers. */ 57#define pstat_endzero pstat_startcopy 58 59#define pstat_startcopy p_prof 60 struct uprof { /* Profile arguments. */ 61 caddr_t pr_base; /* (c + j) Buffer base. */ 62 u_long pr_size; /* (c + j) Buffer size. */ 63 u_long pr_off; /* (c + j) PC offset. */ 64 u_long pr_scale; /* (c + j) PC scaling. */ 65 } p_prof; 66#define pstat_endcopy p_start 67 struct timeval p_start; /* (b) Starting time. */ 68}; 69 70#ifdef _KERNEL 71 72/* 73 * Kernel shareable process resource limits. Because this structure 74 * is moderately large but changes infrequently, it is normally 75 * shared copy-on-write after forks. 76 */ 77struct plimit { 78 struct rlimit pl_rlimit[RLIM_NLIMITS]; 79 int pl_refcnt; /* number of references */ 80}; 81 82struct racct; 83 84/*- 85 * Per uid resource consumption. This structure is used to track 86 * the total resource consumption (process count, socket buffer size, 87 * etc) for the uid and impose limits. 88 * 89 * Locking guide: 90 * (a) Constant from inception 91 * (b) Lockless, updated using atomics 92 * (c) Locked by global uihashtbl_mtx 93 * (d) Locked by the ui_vmsize_mtx 94 */ 95struct uidinfo { 96 LIST_ENTRY(uidinfo) ui_hash; /* (c) hash chain of uidinfos */ 97 struct mtx ui_vmsize_mtx; 98 vm_ooffset_t ui_vmsize; /* (d) swap reservation by uid */ 99 long ui_sbsize; /* (b) socket buffer space consumed */ 100 long ui_proccnt; /* (b) number of processes */ 101 long ui_ptscnt; /* (b) number of pseudo-terminals */ 102 uid_t ui_uid; /* (a) uid */ 103 u_int ui_ref; /* (b) reference count */ 104 struct racct *ui_racct; /* (a) resource accounting */ 105}; 106 107#define UIDINFO_VMSIZE_LOCK(ui) mtx_lock(&((ui)->ui_vmsize_mtx)) 108#define UIDINFO_VMSIZE_UNLOCK(ui) mtx_unlock(&((ui)->ui_vmsize_mtx)) 109 110struct proc; 111struct rusage_ext; 112struct thread; 113 114void addupc_intr(struct thread *td, uintfptr_t pc, u_int ticks); 115void addupc_task(struct thread *td, uintfptr_t pc, u_int ticks); 116void calccru(struct proc *p, struct timeval *up, struct timeval *sp); 117void calcru(struct proc *p, struct timeval *up, struct timeval *sp); 118int chgproccnt(struct uidinfo *uip, int diff, rlim_t maxval); 119int chgsbsize(struct uidinfo *uip, u_int *hiwat, u_int to, 120 rlim_t maxval); 121int chgptscnt(struct uidinfo *uip, int diff, rlim_t maxval); 122int fuswintr(void *base); 123int kern_proc_setrlimit(struct thread *td, struct proc *p, u_int which, 124 struct rlimit *limp); 125struct plimit 126 *lim_alloc(void); 127void lim_copy(struct plimit *dst, struct plimit *src); 128rlim_t lim_cur(struct proc *p, int which); 129void lim_fork(struct proc *p1, struct proc *p2); 130void lim_free(struct plimit *limp); 131struct plimit 132 *lim_hold(struct plimit *limp); 133rlim_t lim_max(struct proc *p, int which); 134void lim_rlimit(struct proc *p, int which, struct rlimit *rlp); 135void ruadd(struct rusage *ru, struct rusage_ext *rux, struct rusage *ru2, 136 struct rusage_ext *rux2); 137void rucollect(struct rusage *ru, struct rusage *ru2); 138void rufetch(struct proc *p, struct rusage *ru); 139void rufetchcalc(struct proc *p, struct rusage *ru, struct timeval *up, 140 struct timeval *sp); 141void rufetchtd(struct thread *td, struct rusage *ru); 142void ruxagg(struct proc *p, struct thread *td); 143int suswintr(void *base, int word); 144struct uidinfo 145 *uifind(uid_t uid); 146void uifree(struct uidinfo *uip); 147void uihashinit(void); 148void uihold(struct uidinfo *uip); 149void ui_racct_foreach(void (*callback)(struct racct *racct, 150 void *arg2, void *arg3), void *arg2, void *arg3); 151 152#endif /* _KERNEL */ 153#endif /* !_SYS_RESOURCEVAR_H_ */ 154