1ec125fbbSEdward Tomasz Napierala /*- 28a36da99SPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 38a36da99SPedro F. Giffuni * 4ec125fbbSEdward Tomasz Napierala * Copyright (c) 2010 The FreeBSD Foundation 5ec125fbbSEdward Tomasz Napierala * All rights reserved. 6ec125fbbSEdward Tomasz Napierala * 7ec125fbbSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 8ec125fbbSEdward Tomasz Napierala * from the FreeBSD Foundation. 9ec125fbbSEdward Tomasz Napierala * 10ec125fbbSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 11ec125fbbSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 12ec125fbbSEdward Tomasz Napierala * are met: 13ec125fbbSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 14ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 15ec125fbbSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 16ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 17ec125fbbSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 18ec125fbbSEdward Tomasz Napierala * 19ec125fbbSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20ec125fbbSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21ec125fbbSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22ec125fbbSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23ec125fbbSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24ec125fbbSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25ec125fbbSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26ec125fbbSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27ec125fbbSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28ec125fbbSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29ec125fbbSEdward Tomasz Napierala * SUCH DAMAGE. 30ec125fbbSEdward Tomasz Napierala * 31ec125fbbSEdward Tomasz Napierala * $FreeBSD$ 32ec125fbbSEdward Tomasz Napierala */ 33ec125fbbSEdward Tomasz Napierala 34ec125fbbSEdward Tomasz Napierala #include <sys/cdefs.h> 35ec125fbbSEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 36ec125fbbSEdward Tomasz Napierala 37ec125fbbSEdward Tomasz Napierala #include <sys/param.h> 38ec125fbbSEdward Tomasz Napierala #include <sys/bus.h> 39ec125fbbSEdward Tomasz Napierala #include <sys/malloc.h> 40ec125fbbSEdward Tomasz Napierala #include <sys/queue.h> 41ec125fbbSEdward Tomasz Napierala #include <sys/refcount.h> 42ec125fbbSEdward Tomasz Napierala #include <sys/jail.h> 43ec125fbbSEdward Tomasz Napierala #include <sys/kernel.h> 44ec125fbbSEdward Tomasz Napierala #include <sys/limits.h> 45ec125fbbSEdward Tomasz Napierala #include <sys/loginclass.h> 46ec125fbbSEdward Tomasz Napierala #include <sys/priv.h> 47ec125fbbSEdward Tomasz Napierala #include <sys/proc.h> 48ec125fbbSEdward Tomasz Napierala #include <sys/racct.h> 49ec125fbbSEdward Tomasz Napierala #include <sys/rctl.h> 50ec125fbbSEdward Tomasz Napierala #include <sys/resourcevar.h> 51ec125fbbSEdward Tomasz Napierala #include <sys/sx.h> 52ec125fbbSEdward Tomasz Napierala #include <sys/sysent.h> 53ec125fbbSEdward Tomasz Napierala #include <sys/sysproto.h> 54ec125fbbSEdward Tomasz Napierala #include <sys/systm.h> 55ec125fbbSEdward Tomasz Napierala #include <sys/types.h> 56ec125fbbSEdward Tomasz Napierala #include <sys/eventhandler.h> 57ec125fbbSEdward Tomasz Napierala #include <sys/lock.h> 58ec125fbbSEdward Tomasz Napierala #include <sys/mutex.h> 59ec125fbbSEdward Tomasz Napierala #include <sys/rwlock.h> 60ec125fbbSEdward Tomasz Napierala #include <sys/sbuf.h> 61ec125fbbSEdward Tomasz Napierala #include <sys/taskqueue.h> 62ec125fbbSEdward Tomasz Napierala #include <sys/tree.h> 63ec125fbbSEdward Tomasz Napierala #include <vm/uma.h> 64ec125fbbSEdward Tomasz Napierala 65ec125fbbSEdward Tomasz Napierala #ifdef RCTL 66ec125fbbSEdward Tomasz Napierala #ifndef RACCT 67ec125fbbSEdward Tomasz Napierala #error "The RCTL option requires the RACCT option" 68ec125fbbSEdward Tomasz Napierala #endif 69ec125fbbSEdward Tomasz Napierala 70ec125fbbSEdward Tomasz Napierala FEATURE(rctl, "Resource Limits"); 71ec125fbbSEdward Tomasz Napierala 72ec125fbbSEdward Tomasz Napierala #define HRF_DEFAULT 0 73ec125fbbSEdward Tomasz Napierala #define HRF_DONT_INHERIT 1 74ec125fbbSEdward Tomasz Napierala #define HRF_DONT_ACCUMULATE 2 75ec125fbbSEdward Tomasz Napierala 76ea228b48SEdward Tomasz Napierala #define RCTL_MAX_INBUFSIZE 4 * 1024 77ea228b48SEdward Tomasz Napierala #define RCTL_MAX_OUTBUFSIZE 16 * 1024 * 1024 78ec125fbbSEdward Tomasz Napierala #define RCTL_LOG_BUFSIZE 128 79ec125fbbSEdward Tomasz Napierala 8036af9869SEdward Tomasz Napierala #define RCTL_PCPU_SHIFT (10 * 1000000) 8136af9869SEdward Tomasz Napierala 82ae34b6ffSEdward Tomasz Napierala static unsigned int rctl_maxbufsize = RCTL_MAX_OUTBUFSIZE; 83f70c075eSEdward Tomasz Napierala static int rctl_log_rate_limit = 10; 84f70c075eSEdward Tomasz Napierala static int rctl_devctl_rate_limit = 10; 858bd8c8f1SEdward Tomasz Napierala 868bd8c8f1SEdward Tomasz Napierala /* 878bd8c8f1SEdward Tomasz Napierala * Values below are initialized in rctl_init(). 888bd8c8f1SEdward Tomasz Napierala */ 898bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min = -1; 908bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max = -1; 918bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct = -1; 928bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2 = -1; 938bd8c8f1SEdward Tomasz Napierala 948bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS); 958bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS); 968bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS); 978bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS); 982b4035eeSEdward Tomasz Napierala 992b4035eeSEdward Tomasz Napierala SYSCTL_NODE(_kern_racct, OID_AUTO, rctl, CTLFLAG_RW, 0, "Resource Limits"); 1002b4035eeSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, maxbufsize, CTLFLAG_RWTUN, 1012b4035eeSEdward Tomasz Napierala &rctl_maxbufsize, 0, "Maximum output buffer size"); 102f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW, 103f70c075eSEdward Tomasz Napierala &rctl_log_rate_limit, 0, "Maximum number of log messages per second"); 1048bd8c8f1SEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RWTUN, 105f70c075eSEdward Tomasz Napierala &rctl_devctl_rate_limit, 0, "Maximum number of devctl messages per second"); 1068bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_min, 1078bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_min_sysctl, "IU", 1088bd8c8f1SEdward Tomasz Napierala "Shortest throttling duration, in hz"); 1098bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_min", &rctl_throttle_min); 1108bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_max, 1118bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_max_sysctl, "IU", 1128bd8c8f1SEdward Tomasz Napierala "Longest throttling duration, in hz"); 1138bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_max", &rctl_throttle_max); 1148bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct, 1158bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_pct_sysctl, "IU", 116ae34b6ffSEdward Tomasz Napierala "Throttling penalty for process consumption, in percent"); 1178bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct", &rctl_throttle_pct); 1188bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct2, 1198bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_pct2_sysctl, "IU", 120ae34b6ffSEdward Tomasz Napierala "Throttling penalty for container consumption, in percent"); 1218bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct2", &rctl_throttle_pct2); 1222b4035eeSEdward Tomasz Napierala 123ec125fbbSEdward Tomasz Napierala /* 124ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 125ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 126ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 127ec125fbbSEdward Tomasz Napierala */ 128ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 129ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 130ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 131ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 132ec125fbbSEdward Tomasz Napierala }; 133ec125fbbSEdward Tomasz Napierala 134ec125fbbSEdward Tomasz Napierala struct dict { 135ec125fbbSEdward Tomasz Napierala const char *d_name; 136ec125fbbSEdward Tomasz Napierala int d_value; 137ec125fbbSEdward Tomasz Napierala }; 138ec125fbbSEdward Tomasz Napierala 139ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 140ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 141ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 142ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 143ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 144ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 145ec125fbbSEdward Tomasz Napierala 146ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 14785a2f1b4SEdward Tomasz Napierala { "cputime", RACCT_CPU }, 14885a2f1b4SEdward Tomasz Napierala { "datasize", RACCT_DATA }, 14985a2f1b4SEdward Tomasz Napierala { "stacksize", RACCT_STACK }, 15085a2f1b4SEdward Tomasz Napierala { "coredumpsize", RACCT_CORE }, 15185a2f1b4SEdward Tomasz Napierala { "memoryuse", RACCT_RSS }, 15285a2f1b4SEdward Tomasz Napierala { "memorylocked", RACCT_MEMLOCK }, 15385a2f1b4SEdward Tomasz Napierala { "maxproc", RACCT_NPROC }, 15485a2f1b4SEdward Tomasz Napierala { "openfiles", RACCT_NOFILE }, 15585a2f1b4SEdward Tomasz Napierala { "vmemoryuse", RACCT_VMEM }, 15685a2f1b4SEdward Tomasz Napierala { "pseudoterminals", RACCT_NPTS }, 15785a2f1b4SEdward Tomasz Napierala { "swapuse", RACCT_SWAP }, 158ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 159ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 160ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 161ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 162ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 163ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 164ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 165ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 166ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 16736af9869SEdward Tomasz Napierala { "pcpu", RACCT_PCTCPU }, 168ae34b6ffSEdward Tomasz Napierala { "readbps", RACCT_READBPS }, 169ae34b6ffSEdward Tomasz Napierala { "writebps", RACCT_WRITEBPS }, 170ae34b6ffSEdward Tomasz Napierala { "readiops", RACCT_READIOPS }, 171ae34b6ffSEdward Tomasz Napierala { "writeiops", RACCT_WRITEIOPS }, 172ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 173ec125fbbSEdward Tomasz Napierala 174ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 175ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 176ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 177ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 178ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 179ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 180ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 181ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 182ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 183ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 184ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 185ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 186ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 187ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 188ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 189ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 190ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 191ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 192ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 193ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 194ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 195ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 196ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 197ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 198ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 199ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 200ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 201ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 202ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 203ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 204ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 205ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 206ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 207ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 208ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 209ae34b6ffSEdward Tomasz Napierala { "throttle", RCTL_ACTION_THROTTLE }, 210ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 211ec125fbbSEdward Tomasz Napierala 212ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 213ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 214ec125fbbSEdward Tomasz Napierala 215ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 216c1a43e73SEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 2174c230cdaSEdward Tomasz Napierala 218ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 219ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 220ec125fbbSEdward Tomasz Napierala 221d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 222ec125fbbSEdward Tomasz Napierala 2238bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS) 2248bd8c8f1SEdward Tomasz Napierala { 225c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_min; 2268bd8c8f1SEdward Tomasz Napierala 2278bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2288bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2298bd8c8f1SEdward Tomasz Napierala return (error); 2308bd8c8f1SEdward Tomasz Napierala if (val < 1 || val > rctl_throttle_max) 2318bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2328bd8c8f1SEdward Tomasz Napierala 233bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2348bd8c8f1SEdward Tomasz Napierala rctl_throttle_min = val; 235bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2368bd8c8f1SEdward Tomasz Napierala 2378bd8c8f1SEdward Tomasz Napierala return (0); 2388bd8c8f1SEdward Tomasz Napierala } 2398bd8c8f1SEdward Tomasz Napierala 2408bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS) 2418bd8c8f1SEdward Tomasz Napierala { 242c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_max; 2438bd8c8f1SEdward Tomasz Napierala 2448bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2458bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2468bd8c8f1SEdward Tomasz Napierala return (error); 2478bd8c8f1SEdward Tomasz Napierala if (val < rctl_throttle_min) 2488bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2498bd8c8f1SEdward Tomasz Napierala 250bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2518bd8c8f1SEdward Tomasz Napierala rctl_throttle_max = val; 252bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2538bd8c8f1SEdward Tomasz Napierala 2548bd8c8f1SEdward Tomasz Napierala return (0); 2558bd8c8f1SEdward Tomasz Napierala } 2568bd8c8f1SEdward Tomasz Napierala 2578bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS) 2588bd8c8f1SEdward Tomasz Napierala { 259c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct; 2608bd8c8f1SEdward Tomasz Napierala 2618bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2628bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2638bd8c8f1SEdward Tomasz Napierala return (error); 2648bd8c8f1SEdward Tomasz Napierala if (val < 0) 2658bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2668bd8c8f1SEdward Tomasz Napierala 267bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2688bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct = val; 269bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2708bd8c8f1SEdward Tomasz Napierala 2718bd8c8f1SEdward Tomasz Napierala return (0); 2728bd8c8f1SEdward Tomasz Napierala } 2738bd8c8f1SEdward Tomasz Napierala 2748bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS) 2758bd8c8f1SEdward Tomasz Napierala { 276c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct2; 2778bd8c8f1SEdward Tomasz Napierala 2788bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2798bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2808bd8c8f1SEdward Tomasz Napierala return (error); 2818bd8c8f1SEdward Tomasz Napierala if (val < 0) 2828bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2838bd8c8f1SEdward Tomasz Napierala 284bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2858bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct2 = val; 286bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2878bd8c8f1SEdward Tomasz Napierala 2888bd8c8f1SEdward Tomasz Napierala return (0); 2898bd8c8f1SEdward Tomasz Napierala } 2908bd8c8f1SEdward Tomasz Napierala 291ec125fbbSEdward Tomasz Napierala static const char * 292ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 293ec125fbbSEdward Tomasz Napierala { 294ec125fbbSEdward Tomasz Napierala int i; 295ec125fbbSEdward Tomasz Napierala 296ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 297ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 298ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 299ec125fbbSEdward Tomasz Napierala } 300ec125fbbSEdward Tomasz Napierala 301ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 302ec125fbbSEdward Tomasz Napierala } 303ec125fbbSEdward Tomasz Napierala 304ec125fbbSEdward Tomasz Napierala static const char * 305ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 306ec125fbbSEdward Tomasz Napierala { 307ec125fbbSEdward Tomasz Napierala int i; 308ec125fbbSEdward Tomasz Napierala 309ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 310ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 311ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 312ec125fbbSEdward Tomasz Napierala } 313ec125fbbSEdward Tomasz Napierala 314ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 315ec125fbbSEdward Tomasz Napierala } 316ec125fbbSEdward Tomasz Napierala 317ec125fbbSEdward Tomasz Napierala const char * 318ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 319ec125fbbSEdward Tomasz Napierala { 320ec125fbbSEdward Tomasz Napierala int i; 321ec125fbbSEdward Tomasz Napierala 322ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 323ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 324ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 325ec125fbbSEdward Tomasz Napierala } 326ec125fbbSEdward Tomasz Napierala 327ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 328ec125fbbSEdward Tomasz Napierala } 329ec125fbbSEdward Tomasz Napierala 330ac3c9819SEdward Tomasz Napierala static struct racct * 331ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 332ac3c9819SEdward Tomasz Napierala { 333ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 334ac3c9819SEdward Tomasz Napierala 335ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 336bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 337ac3c9819SEdward Tomasz Napierala 338ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 339ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 340ac3c9819SEdward Tomasz Napierala return (p->p_racct); 341ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 342ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 343ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 344ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 345ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 346ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 347ac3c9819SEdward Tomasz Napierala default: 348ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 349ac3c9819SEdward Tomasz Napierala } 350ac3c9819SEdward Tomasz Napierala } 351ac3c9819SEdward Tomasz Napierala 352ec125fbbSEdward Tomasz Napierala /* 353ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 354ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 355ec125fbbSEdward Tomasz Napierala */ 356ec125fbbSEdward Tomasz Napierala static int64_t 357ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 358ec125fbbSEdward Tomasz Napierala { 359ac3c9819SEdward Tomasz Napierala const struct racct *racct; 360c1a43e73SEdward Tomasz Napierala int64_t available; 361ec125fbbSEdward Tomasz Napierala 3624b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 363bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 364ec125fbbSEdward Tomasz Napierala 365ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 366ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 367ec125fbbSEdward Tomasz Napierala 368ec125fbbSEdward Tomasz Napierala return (available); 369ec125fbbSEdward Tomasz Napierala } 370ec125fbbSEdward Tomasz Napierala 371ec125fbbSEdward Tomasz Napierala /* 372ae34b6ffSEdward Tomasz Napierala * Called every second for proc, uidinfo, loginclass, and jail containers. 373ae34b6ffSEdward Tomasz Napierala * If the limit isn't exceeded, it decreases the usage amount to zero. 374ae34b6ffSEdward Tomasz Napierala * Otherwise, it decreases it by the value of the limit. This way 375ae34b6ffSEdward Tomasz Napierala * resource consumption exceeding the limit "carries over" to the next 376ae34b6ffSEdward Tomasz Napierala * period. 377ec125fbbSEdward Tomasz Napierala */ 378ae34b6ffSEdward Tomasz Napierala void 379ae34b6ffSEdward Tomasz Napierala rctl_throttle_decay(struct racct *racct, int resource) 380ec125fbbSEdward Tomasz Napierala { 381ae34b6ffSEdward Tomasz Napierala struct rctl_rule *rule; 382ae34b6ffSEdward Tomasz Napierala struct rctl_rule_link *link; 383ae34b6ffSEdward Tomasz Napierala int64_t minavailable; 384ec125fbbSEdward Tomasz Napierala 3854b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 386bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 387ec125fbbSEdward Tomasz Napierala 388ae34b6ffSEdward Tomasz Napierala minavailable = INT64_MAX; 389ec125fbbSEdward Tomasz Napierala 390ae34b6ffSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 391ae34b6ffSEdward Tomasz Napierala rule = link->rrl_rule; 392ae34b6ffSEdward Tomasz Napierala 393ae34b6ffSEdward Tomasz Napierala if (rule->rr_resource != resource) 394ae34b6ffSEdward Tomasz Napierala continue; 395ae34b6ffSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_THROTTLE) 396ae34b6ffSEdward Tomasz Napierala continue; 397ae34b6ffSEdward Tomasz Napierala 398ae34b6ffSEdward Tomasz Napierala if (rule->rr_amount < minavailable) 399ae34b6ffSEdward Tomasz Napierala minavailable = rule->rr_amount; 400ae34b6ffSEdward Tomasz Napierala } 401ae34b6ffSEdward Tomasz Napierala 402ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] < minavailable) { 403ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = 0; 404ae34b6ffSEdward Tomasz Napierala } else { 405ae34b6ffSEdward Tomasz Napierala /* 406ae34b6ffSEdward Tomasz Napierala * Cap utilization counter at ten times the limit. Otherwise, 407ae34b6ffSEdward Tomasz Napierala * if we changed the rule lowering the allowed amount, it could 408ae34b6ffSEdward Tomasz Napierala * take unreasonably long time for the accumulated resource 409ae34b6ffSEdward Tomasz Napierala * usage to drop. 410ae34b6ffSEdward Tomasz Napierala */ 411ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] > minavailable * 10) 412ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = minavailable * 10; 413ae34b6ffSEdward Tomasz Napierala 414ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] -= minavailable; 415ae34b6ffSEdward Tomasz Napierala } 416ec125fbbSEdward Tomasz Napierala } 417ec125fbbSEdward Tomasz Napierala 418ec125fbbSEdward Tomasz Napierala /* 419af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 42036af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 42136af9869SEdward Tomasz Napierala */ 42236af9869SEdward Tomasz Napierala int64_t 42336af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 42436af9869SEdward Tomasz Napierala struct rctl_rule *rule; 42536af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 42636af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 42736af9869SEdward Tomasz Napierala 4284b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 429bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 4304b5c9cf6SEdward Tomasz Napierala 43136af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 43236af9869SEdward Tomasz Napierala limit = 0; 43336af9869SEdward Tomasz Napierala 43436af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 43536af9869SEdward Tomasz Napierala rule = link->rrl_rule; 43636af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 43736af9869SEdward Tomasz Napierala continue; 43836af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 43936af9869SEdward Tomasz Napierala continue; 44036af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 44136af9869SEdward Tomasz Napierala if (available < minavailable) { 44236af9869SEdward Tomasz Napierala minavailable = available; 44336af9869SEdward Tomasz Napierala limit = rule->rr_amount; 44436af9869SEdward Tomasz Napierala } 44536af9869SEdward Tomasz Napierala } 44636af9869SEdward Tomasz Napierala 44736af9869SEdward Tomasz Napierala /* 44836af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 449e3043798SPedro F. Giffuni * %cpu resource. This makes %cpu throttling more aggressive 45036af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 45136af9869SEdward Tomasz Napierala */ 45236af9869SEdward Tomasz Napierala if (limit != 0) { 45336af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 45436af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 45536af9869SEdward Tomasz Napierala else 45636af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 45736af9869SEdward Tomasz Napierala } 45836af9869SEdward Tomasz Napierala 45936af9869SEdward Tomasz Napierala return (minavailable); 46036af9869SEdward Tomasz Napierala } 46136af9869SEdward Tomasz Napierala 462ae34b6ffSEdward Tomasz Napierala static uint64_t 463ae34b6ffSEdward Tomasz Napierala xadd(uint64_t a, uint64_t b) 464ae34b6ffSEdward Tomasz Napierala { 465ae34b6ffSEdward Tomasz Napierala uint64_t c; 466ae34b6ffSEdward Tomasz Napierala 467ae34b6ffSEdward Tomasz Napierala c = a + b; 468ae34b6ffSEdward Tomasz Napierala 469ae34b6ffSEdward Tomasz Napierala /* 470ae34b6ffSEdward Tomasz Napierala * Detect overflow. 471ae34b6ffSEdward Tomasz Napierala */ 472ae34b6ffSEdward Tomasz Napierala if (c < a || c < b) 473ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 474ae34b6ffSEdward Tomasz Napierala 475ae34b6ffSEdward Tomasz Napierala return (c); 476ae34b6ffSEdward Tomasz Napierala } 477ae34b6ffSEdward Tomasz Napierala 478ae34b6ffSEdward Tomasz Napierala static uint64_t 479ae34b6ffSEdward Tomasz Napierala xmul(uint64_t a, uint64_t b) 480ae34b6ffSEdward Tomasz Napierala { 481ae34b6ffSEdward Tomasz Napierala 482f459a818SEdward Tomasz Napierala if (b != 0 && a > UINT64_MAX / b) 483ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 484ae34b6ffSEdward Tomasz Napierala 485f459a818SEdward Tomasz Napierala return (a * b); 486ae34b6ffSEdward Tomasz Napierala } 487ae34b6ffSEdward Tomasz Napierala 48836af9869SEdward Tomasz Napierala /* 489ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 490ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 491ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 492ec125fbbSEdward Tomasz Napierala */ 493ec125fbbSEdward Tomasz Napierala int 494ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 495ec125fbbSEdward Tomasz Napierala { 496f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 497f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 498ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 499ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 500ec125fbbSEdward Tomasz Napierala struct sbuf sb; 501c1a43e73SEdward Tomasz Napierala char *buf; 502ae34b6ffSEdward Tomasz Napierala int64_t available; 503ae34b6ffSEdward Tomasz Napierala uint64_t sleep_ms, sleep_ratio; 504ec125fbbSEdward Tomasz Napierala int should_deny = 0; 505ec125fbbSEdward Tomasz Napierala 5064b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 507bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 508ec125fbbSEdward Tomasz Napierala 509ec125fbbSEdward Tomasz Napierala /* 510ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 511ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 512ec125fbbSEdward Tomasz Napierala */ 513ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 514ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 515ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 516ec125fbbSEdward Tomasz Napierala continue; 517ae34b6ffSEdward Tomasz Napierala 518ae34b6ffSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 519ae34b6ffSEdward Tomasz Napierala if (available >= (int64_t)amount) { 520ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 521ec125fbbSEdward Tomasz Napierala continue; 522ec125fbbSEdward Tomasz Napierala } 523ec125fbbSEdward Tomasz Napierala 524ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 525ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 526ec125fbbSEdward Tomasz Napierala should_deny = 1; 527ec125fbbSEdward Tomasz Napierala continue; 528ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 529ec125fbbSEdward Tomasz Napierala /* 530ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 531ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 532ec125fbbSEdward Tomasz Napierala */ 533ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 534ec125fbbSEdward Tomasz Napierala continue; 535ec125fbbSEdward Tomasz Napierala 53672a401d9SEdward Tomasz Napierala /* 53772a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 53872a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 53972a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 54072a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 54172a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 54272a401d9SEdward Tomasz Napierala */ 54372a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 54472a401d9SEdward Tomasz Napierala continue; 54572a401d9SEdward Tomasz Napierala 546f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 547f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 548ec125fbbSEdward Tomasz Napierala continue; 549ec125fbbSEdward Tomasz Napierala 550ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 551ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 552ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 553ec125fbbSEdward Tomasz Napierala continue; 554ec125fbbSEdward Tomasz Napierala } 555ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 556ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 557ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 558ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 559ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 560ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 561a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 562ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 563ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 564ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 565ec125fbbSEdward Tomasz Napierala continue; 566ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 567ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 568ec125fbbSEdward Tomasz Napierala continue; 569ec125fbbSEdward Tomasz Napierala 57072a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 57172a401d9SEdward Tomasz Napierala continue; 57272a401d9SEdward Tomasz Napierala 573f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 574f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 575f70c075eSEdward Tomasz Napierala continue; 576f70c075eSEdward Tomasz Napierala 577ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 578ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 579ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 580ec125fbbSEdward Tomasz Napierala continue; 581ec125fbbSEdward Tomasz Napierala } 582ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 583ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 584ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 585ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 586ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 587a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 588ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 589ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 590ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 591ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 592ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 593ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 594ec125fbbSEdward Tomasz Napierala continue; 595ae34b6ffSEdward Tomasz Napierala case RCTL_ACTION_THROTTLE: 596ae34b6ffSEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 597ae34b6ffSEdward Tomasz Napierala continue; 598ae34b6ffSEdward Tomasz Napierala 599ae34b6ffSEdward Tomasz Napierala /* 600ae34b6ffSEdward Tomasz Napierala * Make the process sleep for a fraction of second 601ae34b6ffSEdward Tomasz Napierala * proportional to the ratio of process' resource 602ae34b6ffSEdward Tomasz Napierala * utilization compared to the limit. The point is 603ae34b6ffSEdward Tomasz Napierala * to penalize resource hogs: processes that consume 604ae34b6ffSEdward Tomasz Napierala * more of the available resources sleep for longer. 605ae34b6ffSEdward Tomasz Napierala * 606ae34b6ffSEdward Tomasz Napierala * We're trying to defer division until the very end, 607ae34b6ffSEdward Tomasz Napierala * to minimize the rounding effects. The following 608ae34b6ffSEdward Tomasz Napierala * calculation could have been written in a clearer 609ae34b6ffSEdward Tomasz Napierala * way like this: 610ae34b6ffSEdward Tomasz Napierala * 611ae34b6ffSEdward Tomasz Napierala * sleep_ms = hz * p->p_racct->r_resources[resource] / 612ae34b6ffSEdward Tomasz Napierala * rule->rr_amount; 613ae34b6ffSEdward Tomasz Napierala * sleep_ms *= rctl_throttle_pct / 100; 614ae34b6ffSEdward Tomasz Napierala * if (sleep_ms < rctl_throttle_min) 615ae34b6ffSEdward Tomasz Napierala * sleep_ms = rctl_throttle_min; 616ae34b6ffSEdward Tomasz Napierala * 617ae34b6ffSEdward Tomasz Napierala */ 618ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(hz, p->p_racct->r_resources[resource]); 619ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(sleep_ms, rctl_throttle_pct) / 100; 620ae34b6ffSEdward Tomasz Napierala if (sleep_ms < rctl_throttle_min * rule->rr_amount) 621ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_min * rule->rr_amount; 622ae34b6ffSEdward Tomasz Napierala 623ae34b6ffSEdward Tomasz Napierala /* 624ae34b6ffSEdward Tomasz Napierala * Multiply that by the ratio of the resource 625ae34b6ffSEdward Tomasz Napierala * consumption for the container compared to the limit, 626ae34b6ffSEdward Tomasz Napierala * squared. In other words, a process in a container 627ae34b6ffSEdward Tomasz Napierala * that is two times over the limit will be throttled 628ae34b6ffSEdward Tomasz Napierala * four times as much for hitting the same rule. The 629ae34b6ffSEdward Tomasz Napierala * point is to penalize processes more if the container 630ae34b6ffSEdward Tomasz Napierala * itself (eg certain UID or jail) is above the limit. 631ae34b6ffSEdward Tomasz Napierala */ 632ae34b6ffSEdward Tomasz Napierala if (available < 0) 633ae34b6ffSEdward Tomasz Napierala sleep_ratio = -available / rule->rr_amount; 634ae34b6ffSEdward Tomasz Napierala else 635ae34b6ffSEdward Tomasz Napierala sleep_ratio = 0; 636ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, sleep_ratio); 637ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, rctl_throttle_pct2) / 100; 638ae34b6ffSEdward Tomasz Napierala sleep_ms = xadd(sleep_ms, xmul(sleep_ms, sleep_ratio)); 639ae34b6ffSEdward Tomasz Napierala 640ae34b6ffSEdward Tomasz Napierala /* 641ae34b6ffSEdward Tomasz Napierala * Finally the division. 642ae34b6ffSEdward Tomasz Napierala */ 643ae34b6ffSEdward Tomasz Napierala sleep_ms /= rule->rr_amount; 644ae34b6ffSEdward Tomasz Napierala 645ae34b6ffSEdward Tomasz Napierala if (sleep_ms > rctl_throttle_max) 646ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_max; 647ae34b6ffSEdward Tomasz Napierala #if 0 64874a7305aSEdward Tomasz Napierala printf("%s: pid %d (%s), %jd of %jd, will sleep for %ju ms (ratio %ju, available %jd)\n", 649ae34b6ffSEdward Tomasz Napierala __func__, p->p_pid, p->p_comm, 650ae34b6ffSEdward Tomasz Napierala p->p_racct->r_resources[resource], 65174a7305aSEdward Tomasz Napierala rule->rr_amount, (uintmax_t)sleep_ms, 65274a7305aSEdward Tomasz Napierala (uintmax_t)sleep_ratio, (intmax_t)available); 653ae34b6ffSEdward Tomasz Napierala #endif 654ae34b6ffSEdward Tomasz Napierala 655ae34b6ffSEdward Tomasz Napierala KASSERT(sleep_ms >= rctl_throttle_min, ("%s: %ju < %d\n", 656ae34b6ffSEdward Tomasz Napierala __func__, (uintmax_t)sleep_ms, rctl_throttle_min)); 657ae34b6ffSEdward Tomasz Napierala racct_proc_throttle(p, sleep_ms); 658ae34b6ffSEdward Tomasz Napierala continue; 659ec125fbbSEdward Tomasz Napierala default: 660ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 661ec125fbbSEdward Tomasz Napierala continue; 662ec125fbbSEdward Tomasz Napierala 66372a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 66472a401d9SEdward Tomasz Napierala continue; 66572a401d9SEdward Tomasz Napierala 666ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 667ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 668ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 669ec125fbbSEdward Tomasz Napierala rule->rr_action)); 670ec125fbbSEdward Tomasz Napierala 671ec125fbbSEdward Tomasz Napierala /* 672ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 673ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 674ec125fbbSEdward Tomasz Napierala */ 6758451d0ddSKip Macy kern_psignal(p, rule->rr_action); 676ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 677ec125fbbSEdward Tomasz Napierala continue; 678ec125fbbSEdward Tomasz Napierala } 679ec125fbbSEdward Tomasz Napierala } 680ec125fbbSEdward Tomasz Napierala 681ec125fbbSEdward Tomasz Napierala if (should_deny) { 682ec125fbbSEdward Tomasz Napierala /* 683ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 684ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 685ec125fbbSEdward Tomasz Napierala */ 686ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 687ec125fbbSEdward Tomasz Napierala } 688ec125fbbSEdward Tomasz Napierala 689ec125fbbSEdward Tomasz Napierala return (0); 690ec125fbbSEdward Tomasz Napierala } 691ec125fbbSEdward Tomasz Napierala 692ec125fbbSEdward Tomasz Napierala uint64_t 693ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 694ec125fbbSEdward Tomasz Napierala { 695ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 696ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 697ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 698ec125fbbSEdward Tomasz Napierala 6994b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 700bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 701ec125fbbSEdward Tomasz Napierala 702ec125fbbSEdward Tomasz Napierala /* 703ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 704ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 705ec125fbbSEdward Tomasz Napierala */ 706ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 707ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 708ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 709ec125fbbSEdward Tomasz Napierala continue; 710ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 711ec125fbbSEdward Tomasz Napierala continue; 712ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 713ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 714ec125fbbSEdward Tomasz Napierala } 715ec125fbbSEdward Tomasz Napierala 716ec125fbbSEdward Tomasz Napierala return (amount); 717ec125fbbSEdward Tomasz Napierala } 718ec125fbbSEdward Tomasz Napierala 719ec125fbbSEdward Tomasz Napierala uint64_t 720ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 721ec125fbbSEdward Tomasz Napierala { 722ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 723ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 724ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 725ec125fbbSEdward Tomasz Napierala 726ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 727ec125fbbSEdward Tomasz Napierala 7284b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 729bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 730ec125fbbSEdward Tomasz Napierala 731ec125fbbSEdward Tomasz Napierala /* 732ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 733ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 734ec125fbbSEdward Tomasz Napierala */ 735ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 736ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 737ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 738ec125fbbSEdward Tomasz Napierala continue; 739ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 740ec125fbbSEdward Tomasz Napierala continue; 741ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 742ec125fbbSEdward Tomasz Napierala if (available < minavailable) 743ec125fbbSEdward Tomasz Napierala minavailable = available; 744ec125fbbSEdward Tomasz Napierala } 745ec125fbbSEdward Tomasz Napierala 746ec125fbbSEdward Tomasz Napierala /* 747ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 748ec125fbbSEdward Tomasz Napierala */ 749ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 750ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 751ec125fbbSEdward Tomasz Napierala minavailable += allocated; 752ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 753ec125fbbSEdward Tomasz Napierala minavailable = 0; 754bbe4eb6dSEdward Tomasz Napierala 755ec125fbbSEdward Tomasz Napierala return (minavailable); 756ec125fbbSEdward Tomasz Napierala } 757ec125fbbSEdward Tomasz Napierala 758ec125fbbSEdward Tomasz Napierala static int 759ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 760ec125fbbSEdward Tomasz Napierala { 761ec125fbbSEdward Tomasz Napierala 7624b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7634b5c9cf6SEdward Tomasz Napierala 764ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 765ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 766ec125fbbSEdward Tomasz Napierala return (0); 767ec125fbbSEdward Tomasz Napierala 768ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 769ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 770ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 771ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 772ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 773ec125fbbSEdward Tomasz Napierala return (0); 774ec125fbbSEdward Tomasz Napierala break; 775ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 776ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 777ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 778ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 779ec125fbbSEdward Tomasz Napierala return (0); 780ec125fbbSEdward Tomasz Napierala break; 781ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 782415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 783415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 784415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 785ec125fbbSEdward Tomasz Napierala return (0); 786ec125fbbSEdward Tomasz Napierala break; 787ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 788a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 789a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 790a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 791ec125fbbSEdward Tomasz Napierala return (0); 792ec125fbbSEdward Tomasz Napierala break; 793ec125fbbSEdward Tomasz Napierala default: 794ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 795ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 796ec125fbbSEdward Tomasz Napierala } 797ec125fbbSEdward Tomasz Napierala } 798ec125fbbSEdward Tomasz Napierala 799ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 800ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 801ec125fbbSEdward Tomasz Napierala return (0); 802ec125fbbSEdward Tomasz Napierala } 803ec125fbbSEdward Tomasz Napierala 804ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 805ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 806ec125fbbSEdward Tomasz Napierala return (0); 807ec125fbbSEdward Tomasz Napierala } 808ec125fbbSEdward Tomasz Napierala 809ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 810ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 811ec125fbbSEdward Tomasz Napierala return (0); 812ec125fbbSEdward Tomasz Napierala } 813ec125fbbSEdward Tomasz Napierala 814ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 815ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 816ec125fbbSEdward Tomasz Napierala return (0); 817ec125fbbSEdward Tomasz Napierala } 818ec125fbbSEdward Tomasz Napierala 819ec125fbbSEdward Tomasz Napierala return (1); 820ec125fbbSEdward Tomasz Napierala } 821ec125fbbSEdward Tomasz Napierala 822ec125fbbSEdward Tomasz Napierala static int 823ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 824ec125fbbSEdward Tomasz Napierala { 825ec125fbbSEdward Tomasz Napierala int i; 826ec125fbbSEdward Tomasz Napierala 827ec125fbbSEdward Tomasz Napierala if (value == NULL) 828ec125fbbSEdward Tomasz Napierala return (EINVAL); 829ec125fbbSEdward Tomasz Napierala 830ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 831ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 832ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 833ec125fbbSEdward Tomasz Napierala return (0); 834ec125fbbSEdward Tomasz Napierala } 835ec125fbbSEdward Tomasz Napierala } 836ec125fbbSEdward Tomasz Napierala 837ec125fbbSEdward Tomasz Napierala return (EINVAL); 838ec125fbbSEdward Tomasz Napierala } 839ec125fbbSEdward Tomasz Napierala 840ec125fbbSEdward Tomasz Napierala static int 841ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 842ec125fbbSEdward Tomasz Napierala { 843ec125fbbSEdward Tomasz Napierala char *end; 844ec125fbbSEdward Tomasz Napierala 845ec125fbbSEdward Tomasz Napierala if (str == NULL) 846ec125fbbSEdward Tomasz Napierala return (EINVAL); 847ec125fbbSEdward Tomasz Napierala 848ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 849ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 850ec125fbbSEdward Tomasz Napierala return (EINVAL); 851ec125fbbSEdward Tomasz Napierala 852ec125fbbSEdward Tomasz Napierala return (0); 853ec125fbbSEdward Tomasz Napierala } 854ec125fbbSEdward Tomasz Napierala 855ec125fbbSEdward Tomasz Napierala static int 856ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 857ec125fbbSEdward Tomasz Napierala { 858ec125fbbSEdward Tomasz Napierala char *end; 859ec125fbbSEdward Tomasz Napierala 860ec125fbbSEdward Tomasz Napierala if (str == NULL) 861ec125fbbSEdward Tomasz Napierala return (EINVAL); 862ec125fbbSEdward Tomasz Napierala 863ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 864ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 865ec125fbbSEdward Tomasz Napierala return (EINVAL); 866ec125fbbSEdward Tomasz Napierala 867b450d447SEdward Tomasz Napierala if (*value < 0) 868b450d447SEdward Tomasz Napierala return (ERANGE); 869b450d447SEdward Tomasz Napierala 870ec125fbbSEdward Tomasz Napierala return (0); 871ec125fbbSEdward Tomasz Napierala } 872ec125fbbSEdward Tomasz Napierala 873ec125fbbSEdward Tomasz Napierala /* 874ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 875ec125fbbSEdward Tomasz Napierala */ 876ec125fbbSEdward Tomasz Napierala static void 877ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 878ec125fbbSEdward Tomasz Napierala { 879ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 880ec125fbbSEdward Tomasz Napierala 8814b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 882ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 883ec125fbbSEdward Tomasz Napierala 884ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 885ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 886ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 887ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 888ec125fbbSEdward Tomasz Napierala 889bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 890ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 891bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 892ec125fbbSEdward Tomasz Napierala } 893ec125fbbSEdward Tomasz Napierala 894ec125fbbSEdward Tomasz Napierala static int 895ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 896ec125fbbSEdward Tomasz Napierala { 897ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 898ec125fbbSEdward Tomasz Napierala 8994b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 900ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 901bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 902ec125fbbSEdward Tomasz Napierala 903ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 904ec125fbbSEdward Tomasz Napierala if (link == NULL) 905ec125fbbSEdward Tomasz Napierala return (ENOMEM); 906ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 907ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 908ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 909ec125fbbSEdward Tomasz Napierala 910ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 911bbe4eb6dSEdward Tomasz Napierala 912ec125fbbSEdward Tomasz Napierala return (0); 913ec125fbbSEdward Tomasz Napierala } 914ec125fbbSEdward Tomasz Napierala 915ec125fbbSEdward Tomasz Napierala /* 916ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 917ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 918ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 919ec125fbbSEdward Tomasz Napierala */ 920ec125fbbSEdward Tomasz Napierala static int 921ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 922ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 923ec125fbbSEdward Tomasz Napierala { 924ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 925c1a43e73SEdward Tomasz Napierala int removed = 0; 926ec125fbbSEdward Tomasz Napierala 9274b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 928bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 929ec125fbbSEdward Tomasz Napierala 930ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 931ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 932ec125fbbSEdward Tomasz Napierala continue; 933ec125fbbSEdward Tomasz Napierala 934ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 935ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 936ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 937ec125fbbSEdward Tomasz Napierala removed++; 938ec125fbbSEdward Tomasz Napierala } 939ec125fbbSEdward Tomasz Napierala return (removed); 940ec125fbbSEdward Tomasz Napierala } 941ec125fbbSEdward Tomasz Napierala 942ec125fbbSEdward Tomasz Napierala static void 943ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 944ec125fbbSEdward Tomasz Napierala { 945ec125fbbSEdward Tomasz Napierala 9464b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9474b5c9cf6SEdward Tomasz Napierala 948ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 949ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 950ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 951a7ad07bfSEdward Tomasz Napierala break; 952ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 953a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 954a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 955ec125fbbSEdward Tomasz Napierala break; 956ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 957ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 958ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 959ec125fbbSEdward Tomasz Napierala break; 960ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 961415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 962415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 963ec125fbbSEdward Tomasz Napierala break; 964ec125fbbSEdward Tomasz Napierala default: 965ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 966ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 967ec125fbbSEdward Tomasz Napierala } 968ec125fbbSEdward Tomasz Napierala } 969ec125fbbSEdward Tomasz Napierala 970ec125fbbSEdward Tomasz Napierala static void 971ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 972ec125fbbSEdward Tomasz Napierala { 973ec125fbbSEdward Tomasz Napierala 9744b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9754b5c9cf6SEdward Tomasz Napierala 976ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 977ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 978ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 979a7ad07bfSEdward Tomasz Napierala break; 980ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 981a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 982a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 983ec125fbbSEdward Tomasz Napierala break; 984ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 985ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 986ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 987ec125fbbSEdward Tomasz Napierala break; 988ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 989415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 990415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 991ec125fbbSEdward Tomasz Napierala break; 992ec125fbbSEdward Tomasz Napierala default: 993ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 994ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 995ec125fbbSEdward Tomasz Napierala } 996ec125fbbSEdward Tomasz Napierala } 997ec125fbbSEdward Tomasz Napierala 998ec125fbbSEdward Tomasz Napierala struct rctl_rule * 999ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 1000ec125fbbSEdward Tomasz Napierala { 1001ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1002ec125fbbSEdward Tomasz Napierala 10034b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10044b5c9cf6SEdward Tomasz Napierala 1005ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 1006ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1007ec125fbbSEdward Tomasz Napierala return (NULL); 1008ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1009ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1010ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1011415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1012a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1013ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1014ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1015ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1016ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1017ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 1018ec125fbbSEdward Tomasz Napierala 1019ec125fbbSEdward Tomasz Napierala return (rule); 1020ec125fbbSEdward Tomasz Napierala } 1021ec125fbbSEdward Tomasz Napierala 1022ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1023ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 1024ec125fbbSEdward Tomasz Napierala { 1025ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 1026ec125fbbSEdward Tomasz Napierala 10274b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10284b5c9cf6SEdward Tomasz Napierala 1029ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 1030ec125fbbSEdward Tomasz Napierala if (copy == NULL) 1031ec125fbbSEdward Tomasz Napierala return (NULL); 1032ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 1033ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 1034ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 1035415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 1036a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 1037ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 1038ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 1039ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 1040ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 1041ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 1042ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 1043ec125fbbSEdward Tomasz Napierala 1044ec125fbbSEdward Tomasz Napierala return (copy); 1045ec125fbbSEdward Tomasz Napierala } 1046ec125fbbSEdward Tomasz Napierala 1047ec125fbbSEdward Tomasz Napierala void 1048ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 1049ec125fbbSEdward Tomasz Napierala { 1050ec125fbbSEdward Tomasz Napierala 10514b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1052ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1053ec125fbbSEdward Tomasz Napierala 1054ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 1055ec125fbbSEdward Tomasz Napierala } 1056ec125fbbSEdward Tomasz Napierala 1057ec125fbbSEdward Tomasz Napierala static void 1058ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 1059ec125fbbSEdward Tomasz Napierala { 1060ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1061ec125fbbSEdward Tomasz Napierala 1062ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 1063ec125fbbSEdward Tomasz Napierala 10644b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1065ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 1066ec125fbbSEdward Tomasz Napierala 1067ec125fbbSEdward Tomasz Napierala /* 1068ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 1069ec125fbbSEdward Tomasz Napierala */ 1070ec125fbbSEdward Tomasz Napierala 1071ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 1072ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 1073ec125fbbSEdward Tomasz Napierala } 1074ec125fbbSEdward Tomasz Napierala 1075ec125fbbSEdward Tomasz Napierala void 1076ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 1077ec125fbbSEdward Tomasz Napierala { 1078ec125fbbSEdward Tomasz Napierala 10794b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1080ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1081ec125fbbSEdward Tomasz Napierala 1082ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 1083ec125fbbSEdward Tomasz Napierala /* 1084ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 1085ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 1086ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 1087ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 1088ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 1089ec125fbbSEdward Tomasz Napierala */ 1090ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 1091ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 1092ec125fbbSEdward Tomasz Napierala } 1093ec125fbbSEdward Tomasz Napierala } 1094ec125fbbSEdward Tomasz Napierala 1095ec125fbbSEdward Tomasz Napierala static int 1096ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 1097ec125fbbSEdward Tomasz Napierala { 1098ec125fbbSEdward Tomasz Napierala 10994b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11004b5c9cf6SEdward Tomasz Napierala 1101ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1102ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1103ec125fbbSEdward Tomasz Napierala return (0); 1104ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1105ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1106ec125fbbSEdward Tomasz Napierala return (0); 1107ec125fbbSEdward Tomasz Napierala break; 1108ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1109ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1110ec125fbbSEdward Tomasz Napierala return (0); 1111ec125fbbSEdward Tomasz Napierala break; 1112ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1113415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1114ec125fbbSEdward Tomasz Napierala return (0); 1115ec125fbbSEdward Tomasz Napierala break; 1116ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1117a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1118ec125fbbSEdward Tomasz Napierala return (0); 1119ec125fbbSEdward Tomasz Napierala break; 1120ec125fbbSEdward Tomasz Napierala default: 1121ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 1122ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1123ec125fbbSEdward Tomasz Napierala } 1124ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 1125ec125fbbSEdward Tomasz Napierala return (0); 1126ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 1127ec125fbbSEdward Tomasz Napierala return (0); 1128ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 1129ec125fbbSEdward Tomasz Napierala return (0); 1130ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 1131ec125fbbSEdward Tomasz Napierala return (0); 1132ec125fbbSEdward Tomasz Napierala 1133ec125fbbSEdward Tomasz Napierala return (1); 1134ec125fbbSEdward Tomasz Napierala } 1135ec125fbbSEdward Tomasz Napierala 1136ec125fbbSEdward Tomasz Napierala static int 1137ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 1138ec125fbbSEdward Tomasz Napierala { 1139c1a43e73SEdward Tomasz Napierala struct rctl_rule *rule; 1140ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 1141ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 1142ec125fbbSEdward Tomasz Napierala id_t id; 1143c1a43e73SEdward Tomasz Napierala int error = 0; 1144ec125fbbSEdward Tomasz Napierala 11454b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11464b5c9cf6SEdward Tomasz Napierala 1147ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 1148ec125fbbSEdward Tomasz Napierala 1149ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 1150ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 1151ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 1152ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 1153ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 1154ec125fbbSEdward Tomasz Napierala perstr = rulestr; 1155ec125fbbSEdward Tomasz Napierala 1156ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 1157ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1158ec125fbbSEdward Tomasz Napierala else { 1159ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 1160ec125fbbSEdward Tomasz Napierala if (error != 0) 1161ec125fbbSEdward Tomasz Napierala goto out; 1162ec125fbbSEdward Tomasz Napierala } 1163ec125fbbSEdward Tomasz Napierala 1164ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 1165ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1166ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1167415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1168a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1169ec125fbbSEdward Tomasz Napierala } else { 1170ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1171ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1172ec125fbbSEdward Tomasz Napierala error = EINVAL; 1173ec125fbbSEdward Tomasz Napierala goto out; 1174ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1175ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1176ec125fbbSEdward Tomasz Napierala if (error != 0) 1177ec125fbbSEdward Tomasz Napierala goto out; 1178ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1179ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 1180ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 1181ec125fbbSEdward Tomasz Napierala error = ESRCH; 1182ec125fbbSEdward Tomasz Napierala goto out; 1183ec125fbbSEdward Tomasz Napierala } 1184ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 1185ec125fbbSEdward Tomasz Napierala break; 1186ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1187ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1188ec125fbbSEdward Tomasz Napierala if (error != 0) 1189ec125fbbSEdward Tomasz Napierala goto out; 1190ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 1191ec125fbbSEdward Tomasz Napierala break; 1192ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1193415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 1194ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 1195415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 1196ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 1197ec125fbbSEdward Tomasz Napierala goto out; 1198ec125fbbSEdward Tomasz Napierala } 1199ec125fbbSEdward Tomasz Napierala break; 1200ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1201a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 1202a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 1203a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 1204a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 1205ec125fbbSEdward Tomasz Napierala goto out; 1206ec125fbbSEdward Tomasz Napierala } 1207ec125fbbSEdward Tomasz Napierala break; 1208ec125fbbSEdward Tomasz Napierala default: 1209ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 1210ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1211ec125fbbSEdward Tomasz Napierala } 1212ec125fbbSEdward Tomasz Napierala } 1213ec125fbbSEdward Tomasz Napierala 1214ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1215ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1216ec125fbbSEdward Tomasz Napierala else { 1217ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1218ec125fbbSEdward Tomasz Napierala resourcenames); 1219ec125fbbSEdward Tomasz Napierala if (error != 0) 1220ec125fbbSEdward Tomasz Napierala goto out; 1221ec125fbbSEdward Tomasz Napierala } 1222ec125fbbSEdward Tomasz Napierala 1223ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1224ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1225ec125fbbSEdward Tomasz Napierala else { 1226ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1227ec125fbbSEdward Tomasz Napierala if (error != 0) 1228ec125fbbSEdward Tomasz Napierala goto out; 1229ec125fbbSEdward Tomasz Napierala } 1230ec125fbbSEdward Tomasz Napierala 1231ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1232ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1233ec125fbbSEdward Tomasz Napierala else { 1234ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1235ec125fbbSEdward Tomasz Napierala if (error != 0) 1236ec125fbbSEdward Tomasz Napierala goto out; 1237b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1238b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1239b450d447SEdward Tomasz Napierala error = ERANGE; 1240b450d447SEdward Tomasz Napierala goto out; 1241b450d447SEdward Tomasz Napierala } 1242cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1243ec125fbbSEdward Tomasz Napierala } 1244b450d447SEdward Tomasz Napierala } 1245ec125fbbSEdward Tomasz Napierala 1246ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1247ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1248ec125fbbSEdward Tomasz Napierala else { 1249ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1250ec125fbbSEdward Tomasz Napierala if (error != 0) 1251ec125fbbSEdward Tomasz Napierala goto out; 1252ec125fbbSEdward Tomasz Napierala } 1253ec125fbbSEdward Tomasz Napierala 1254ec125fbbSEdward Tomasz Napierala out: 1255ec125fbbSEdward Tomasz Napierala if (error == 0) 1256ec125fbbSEdward Tomasz Napierala *rulep = rule; 1257ec125fbbSEdward Tomasz Napierala else 1258ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1259ec125fbbSEdward Tomasz Napierala 1260ec125fbbSEdward Tomasz Napierala return (error); 1261ec125fbbSEdward Tomasz Napierala } 1262ec125fbbSEdward Tomasz Napierala 1263ec125fbbSEdward Tomasz Napierala /* 1264ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1265ec125fbbSEdward Tomasz Napierala */ 1266ec125fbbSEdward Tomasz Napierala int 1267ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1268ec125fbbSEdward Tomasz Napierala { 1269ec125fbbSEdward Tomasz Napierala struct proc *p; 1270ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1271ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1272ec125fbbSEdward Tomasz Napierala struct prison *pr; 1273a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1274ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1275ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1276ec125fbbSEdward Tomasz Napierala int match; 1277ec125fbbSEdward Tomasz Napierala 12784b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1279ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1280ec125fbbSEdward Tomasz Napierala 1281ec125fbbSEdward Tomasz Napierala /* 1282ae34b6ffSEdward Tomasz Napierala * Some rules just don't make sense, like "deny" rule for an undeniable 1283ae34b6ffSEdward Tomasz Napierala * resource. The exception are the RSS and %CPU resources - they are 1284ae34b6ffSEdward Tomasz Napierala * not deniable in the racct sense, but the limit is enforced in 1285ae34b6ffSEdward Tomasz Napierala * a different way. 1286ec125fbbSEdward Tomasz Napierala */ 1287ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1288ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DENIABLE(rule->rr_resource) && 1289ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_RSS && 1290ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_PCTCPU) { 1291ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1292ae34b6ffSEdward Tomasz Napierala } 1293ae34b6ffSEdward Tomasz Napierala 1294ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1295ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DECAYING(rule->rr_resource)) { 1296ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1297ae34b6ffSEdward Tomasz Napierala } 1298ae34b6ffSEdward Tomasz Napierala 1299ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1300ae34b6ffSEdward Tomasz Napierala rule->rr_resource == RACCT_PCTCPU) { 1301ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1302ae34b6ffSEdward Tomasz Napierala } 1303ec125fbbSEdward Tomasz Napierala 1304ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 1305ae34b6ffSEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) { 1306ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1307ae34b6ffSEdward Tomasz Napierala } 1308ec125fbbSEdward Tomasz Napierala 1309ec125fbbSEdward Tomasz Napierala /* 1310ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1311ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1312ec125fbbSEdward Tomasz Napierala */ 1313ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1314ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1315ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1316ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1317ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1318ec125fbbSEdward Tomasz Napierala } else 1319ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1320ec125fbbSEdward Tomasz Napierala 1321ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1322ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1323ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1324ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1325ec125fbbSEdward Tomasz Napierala 1326ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1327ec125fbbSEdward Tomasz Napierala /* 1328ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1329ec125fbbSEdward Tomasz Napierala * to do. 1330ec125fbbSEdward Tomasz Napierala */ 1331ec125fbbSEdward Tomasz Napierala return (0); 1332ec125fbbSEdward Tomasz Napierala 1333ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1334ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1335ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1336ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1337ec125fbbSEdward Tomasz Napierala break; 1338ec125fbbSEdward Tomasz Napierala 1339ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1340415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1341ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1342ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1343ec125fbbSEdward Tomasz Napierala break; 1344ec125fbbSEdward Tomasz Napierala 1345ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1346a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1347a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1348a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1349ec125fbbSEdward Tomasz Napierala break; 1350ec125fbbSEdward Tomasz Napierala 1351ec125fbbSEdward Tomasz Napierala default: 1352ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1353ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1354ec125fbbSEdward Tomasz Napierala } 1355ec125fbbSEdward Tomasz Napierala 1356ec125fbbSEdward Tomasz Napierala /* 1357ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1358ec125fbbSEdward Tomasz Napierala * it applies to. 1359ec125fbbSEdward Tomasz Napierala */ 1360ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1361ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1362ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1363ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1364ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1365ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1366ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1367ec125fbbSEdward Tomasz Napierala break; 1368ec125fbbSEdward Tomasz Napierala continue; 1369ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1370415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1371ec125fbbSEdward Tomasz Napierala break; 1372ec125fbbSEdward Tomasz Napierala continue; 1373ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1374ec125fbbSEdward Tomasz Napierala match = 0; 1375ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1376a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1377ec125fbbSEdward Tomasz Napierala match = 1; 1378ec125fbbSEdward Tomasz Napierala break; 1379ec125fbbSEdward Tomasz Napierala } 1380ec125fbbSEdward Tomasz Napierala } 1381ec125fbbSEdward Tomasz Napierala if (match) 1382ec125fbbSEdward Tomasz Napierala break; 1383ec125fbbSEdward Tomasz Napierala continue; 1384ec125fbbSEdward Tomasz Napierala default: 1385ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1386ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1387ec125fbbSEdward Tomasz Napierala } 1388ec125fbbSEdward Tomasz Napierala 1389ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1390ec125fbbSEdward Tomasz Napierala } 1391ec125fbbSEdward Tomasz Napierala 1392ec125fbbSEdward Tomasz Napierala return (0); 1393ec125fbbSEdward Tomasz Napierala } 1394ec125fbbSEdward Tomasz Napierala 1395ec125fbbSEdward Tomasz Napierala static void 139615db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 139715db3c07SEdward Tomasz Napierala { 139815db3c07SEdward Tomasz Napierala 1399bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 140015db3c07SEdward Tomasz Napierala } 140115db3c07SEdward Tomasz Napierala 140215db3c07SEdward Tomasz Napierala static void 140315db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 140415db3c07SEdward Tomasz Napierala { 140515db3c07SEdward Tomasz Napierala 1406bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 140715db3c07SEdward Tomasz Napierala } 140815db3c07SEdward Tomasz Napierala 140915db3c07SEdward Tomasz Napierala static void 1410ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1411ec125fbbSEdward Tomasz Napierala { 1412ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1413ec125fbbSEdward Tomasz Napierala int found = 0; 1414ec125fbbSEdward Tomasz Napierala 14154b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1416bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 14174b5c9cf6SEdward Tomasz Napierala 1418ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1419ec125fbbSEdward Tomasz Napierala 1420ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1421ec125fbbSEdward Tomasz Napierala } 1422ec125fbbSEdward Tomasz Napierala 1423ec125fbbSEdward Tomasz Napierala /* 1424ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1425ec125fbbSEdward Tomasz Napierala */ 1426ec125fbbSEdward Tomasz Napierala int 1427ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1428ec125fbbSEdward Tomasz Napierala { 1429ec125fbbSEdward Tomasz Napierala struct proc *p; 1430c1a43e73SEdward Tomasz Napierala int found = 0; 1431ec125fbbSEdward Tomasz Napierala 14324b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14334b5c9cf6SEdward Tomasz Napierala 1434ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1435ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1436ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1437bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1438ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1439bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1440ec125fbbSEdward Tomasz Napierala if (found) 1441ec125fbbSEdward Tomasz Napierala return (0); 1442ec125fbbSEdward Tomasz Napierala return (ESRCH); 1443ec125fbbSEdward Tomasz Napierala } 1444ec125fbbSEdward Tomasz Napierala 144515db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, 144615db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 144715db3c07SEdward Tomasz Napierala filter, (void *)&found); 144815db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, 144915db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 145015db3c07SEdward Tomasz Napierala filter, (void *)&found); 145115db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 145215db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 145315db3c07SEdward Tomasz Napierala filter, (void *)&found); 1454ec125fbbSEdward Tomasz Napierala 1455ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1456bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1457ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1458ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1459ec125fbbSEdward Tomasz Napierala } 1460bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1461ec125fbbSEdward Tomasz Napierala 1462ec125fbbSEdward Tomasz Napierala if (found) 1463ec125fbbSEdward Tomasz Napierala return (0); 1464ec125fbbSEdward Tomasz Napierala return (ESRCH); 1465ec125fbbSEdward Tomasz Napierala } 1466ec125fbbSEdward Tomasz Napierala 1467ec125fbbSEdward Tomasz Napierala /* 1468ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1469ec125fbbSEdward Tomasz Napierala */ 1470ec125fbbSEdward Tomasz Napierala static void 1471ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1472ec125fbbSEdward Tomasz Napierala { 1473ec125fbbSEdward Tomasz Napierala int64_t amount; 1474ec125fbbSEdward Tomasz Napierala 14754b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14764b5c9cf6SEdward Tomasz Napierala 1477ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1478ec125fbbSEdward Tomasz Napierala 1479ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1480ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1481ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1482ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1483ec125fbbSEdward Tomasz Napierala else 1484ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1485ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1486ec125fbbSEdward Tomasz Napierala break; 1487ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1488ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1489ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1490ec125fbbSEdward Tomasz Napierala else 1491ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1492ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1493ec125fbbSEdward Tomasz Napierala break; 1494ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1495415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1496ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1497ec125fbbSEdward Tomasz Napierala else 1498ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1499415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1500ec125fbbSEdward Tomasz Napierala break; 1501ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1502a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1503ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1504ec125fbbSEdward Tomasz Napierala else 1505ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1506a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1507ec125fbbSEdward Tomasz Napierala break; 1508ec125fbbSEdward Tomasz Napierala default: 1509ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1510ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1511ec125fbbSEdward Tomasz Napierala } 1512ec125fbbSEdward Tomasz Napierala 1513ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1514ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 151585a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 151685a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1517ec125fbbSEdward Tomasz Napierala 1518ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1519ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1520ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1521ec125fbbSEdward Tomasz Napierala amount); 1522ec125fbbSEdward Tomasz Napierala 1523ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1524ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1525ec125fbbSEdward Tomasz Napierala } 1526ec125fbbSEdward Tomasz Napierala 1527ec125fbbSEdward Tomasz Napierala /* 1528ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1529ec125fbbSEdward Tomasz Napierala */ 1530ec125fbbSEdward Tomasz Napierala static int 1531ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1532ec125fbbSEdward Tomasz Napierala { 1533ec125fbbSEdward Tomasz Napierala char *str; 1534c1a43e73SEdward Tomasz Napierala int error; 1535ec125fbbSEdward Tomasz Napierala 15364b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15374b5c9cf6SEdward Tomasz Napierala 1538ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1539ec125fbbSEdward Tomasz Napierala return (EINVAL); 1540ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1541786813aaSEdward Tomasz Napierala return (E2BIG); 1542ec125fbbSEdward Tomasz Napierala 1543ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1544ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1545ec125fbbSEdward Tomasz Napierala if (error != 0) { 1546ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1547ec125fbbSEdward Tomasz Napierala return (error); 1548ec125fbbSEdward Tomasz Napierala } 1549ec125fbbSEdward Tomasz Napierala 1550ec125fbbSEdward Tomasz Napierala *inputstr = str; 1551ec125fbbSEdward Tomasz Napierala 1552ec125fbbSEdward Tomasz Napierala return (0); 1553ec125fbbSEdward Tomasz Napierala } 1554ec125fbbSEdward Tomasz Napierala 1555ec125fbbSEdward Tomasz Napierala /* 1556ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1557ec125fbbSEdward Tomasz Napierala */ 1558ec125fbbSEdward Tomasz Napierala static int 1559ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1560ec125fbbSEdward Tomasz Napierala { 1561ec125fbbSEdward Tomasz Napierala int error; 1562ec125fbbSEdward Tomasz Napierala 15634b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15644b5c9cf6SEdward Tomasz Napierala 1565ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1566ec125fbbSEdward Tomasz Napierala return (0); 1567ec125fbbSEdward Tomasz Napierala 1568ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1569ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1570ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1571ec125fbbSEdward Tomasz Napierala return (ERANGE); 1572ec125fbbSEdward Tomasz Napierala } 1573ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1574ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1575ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1576ec125fbbSEdward Tomasz Napierala return (error); 1577ec125fbbSEdward Tomasz Napierala } 1578ec125fbbSEdward Tomasz Napierala 1579ec125fbbSEdward Tomasz Napierala static struct sbuf * 1580ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1581ec125fbbSEdward Tomasz Napierala { 1582ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1583c1a43e73SEdward Tomasz Napierala int64_t amount; 1584c1a43e73SEdward Tomasz Napierala int i; 1585ec125fbbSEdward Tomasz Napierala 15864b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15874b5c9cf6SEdward Tomasz Napierala 1588ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1589ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 15904fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1591ec125fbbSEdward Tomasz Napierala continue; 1592bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1593ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 1594bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 159585a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1596cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1597ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1598ec125fbbSEdward Tomasz Napierala } 1599ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1600ec125fbbSEdward Tomasz Napierala return (sb); 1601ec125fbbSEdward Tomasz Napierala } 1602ec125fbbSEdward Tomasz Napierala 1603ec125fbbSEdward Tomasz Napierala int 16048451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1605ec125fbbSEdward Tomasz Napierala { 1606ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1607ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1608ec125fbbSEdward Tomasz Napierala struct proc *p; 1609ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1610ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1611a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1612c1a43e73SEdward Tomasz Napierala char *inputstr; 1613c1a43e73SEdward Tomasz Napierala int error; 1614ec125fbbSEdward Tomasz Napierala 16154b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16164b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16174b5c9cf6SEdward Tomasz Napierala 1618415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1619ec125fbbSEdward Tomasz Napierala if (error != 0) 1620ec125fbbSEdward Tomasz Napierala return (error); 1621ec125fbbSEdward Tomasz Napierala 1622ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1623ec125fbbSEdward Tomasz Napierala if (error != 0) 1624ec125fbbSEdward Tomasz Napierala return (error); 1625ec125fbbSEdward Tomasz Napierala 1626ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1627ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1628ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1629ec125fbbSEdward Tomasz Napierala if (error != 0) { 1630ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1631ec125fbbSEdward Tomasz Napierala return (error); 1632ec125fbbSEdward Tomasz Napierala } 1633ec125fbbSEdward Tomasz Napierala 1634ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1635ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1636ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1637ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1638ec125fbbSEdward Tomasz Napierala error = EINVAL; 1639ec125fbbSEdward Tomasz Napierala goto out; 1640ec125fbbSEdward Tomasz Napierala } 1641ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1642ec125fbbSEdward Tomasz Napierala break; 1643ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1644ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1645ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1646ec125fbbSEdward Tomasz Napierala error = EINVAL; 1647ec125fbbSEdward Tomasz Napierala goto out; 1648ec125fbbSEdward Tomasz Napierala } 1649ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1650ec125fbbSEdward Tomasz Napierala break; 1651ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1652415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1653ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1654ec125fbbSEdward Tomasz Napierala error = EINVAL; 1655ec125fbbSEdward Tomasz Napierala goto out; 1656ec125fbbSEdward Tomasz Napierala } 1657ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1658ec125fbbSEdward Tomasz Napierala break; 1659ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1660a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1661a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1662ec125fbbSEdward Tomasz Napierala error = EINVAL; 1663ec125fbbSEdward Tomasz Napierala goto out; 1664ec125fbbSEdward Tomasz Napierala } 1665a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1666ec125fbbSEdward Tomasz Napierala break; 1667ec125fbbSEdward Tomasz Napierala default: 1668ec125fbbSEdward Tomasz Napierala error = EINVAL; 1669ec125fbbSEdward Tomasz Napierala } 1670ec125fbbSEdward Tomasz Napierala out: 1671ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1672ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1673ec125fbbSEdward Tomasz Napierala if (error != 0) 1674ec125fbbSEdward Tomasz Napierala return (error); 1675ec125fbbSEdward Tomasz Napierala 1676ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1677ec125fbbSEdward Tomasz Napierala 1678ec125fbbSEdward Tomasz Napierala return (error); 1679ec125fbbSEdward Tomasz Napierala } 1680ec125fbbSEdward Tomasz Napierala 1681ec125fbbSEdward Tomasz Napierala static void 1682ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1683ec125fbbSEdward Tomasz Napierala { 1684ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1685ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1686ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1687ec125fbbSEdward Tomasz Napierala 16884b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1689bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 16904b5c9cf6SEdward Tomasz Napierala 1691ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1692ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1693ec125fbbSEdward Tomasz Napierala continue; 1694ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1695ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1696ec125fbbSEdward Tomasz Napierala } 1697ec125fbbSEdward Tomasz Napierala } 1698ec125fbbSEdward Tomasz Napierala 1699ec125fbbSEdward Tomasz Napierala int 17008451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1701ec125fbbSEdward Tomasz Napierala { 1702ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1703ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1704ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1705ec125fbbSEdward Tomasz Napierala struct proc *p; 1706c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1707c1a43e73SEdward Tomasz Napierala size_t bufsize; 1708c1a43e73SEdward Tomasz Napierala int error; 1709ec125fbbSEdward Tomasz Napierala 17104b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17114b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17124b5c9cf6SEdward Tomasz Napierala 1713ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1714ec125fbbSEdward Tomasz Napierala if (error != 0) 1715ec125fbbSEdward Tomasz Napierala return (error); 1716ec125fbbSEdward Tomasz Napierala 1717ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1718ec125fbbSEdward Tomasz Napierala if (error != 0) 1719ec125fbbSEdward Tomasz Napierala return (error); 1720ec125fbbSEdward Tomasz Napierala 1721ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1722ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1723ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1724ec125fbbSEdward Tomasz Napierala if (error != 0) { 1725ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1726ec125fbbSEdward Tomasz Napierala return (error); 1727ec125fbbSEdward Tomasz Napierala } 1728ec125fbbSEdward Tomasz Napierala 17292b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 17302b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 17312b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 17322b4035eeSEdward Tomasz Napierala return (E2BIG); 17332b4035eeSEdward Tomasz Napierala } 17342b4035eeSEdward Tomasz Napierala 1735ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1736ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1737ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1738ec125fbbSEdward Tomasz Napierala 1739ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1740bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1741ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1742ec125fbbSEdward Tomasz Napierala /* 1743ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1744ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1745ec125fbbSEdward Tomasz Napierala */ 1746ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1747ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1748ec125fbbSEdward Tomasz Napierala continue; 1749ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1750ec125fbbSEdward Tomasz Napierala continue; 1751ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1752ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1753ec125fbbSEdward Tomasz Napierala } 1754bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1755ec125fbbSEdward Tomasz Napierala } 1756ec125fbbSEdward Tomasz Napierala 175715db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, 175815db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 175915db3c07SEdward Tomasz Napierala filter, sb); 176015db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, 176115db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 176215db3c07SEdward Tomasz Napierala filter, sb); 176315db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 176415db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 176515db3c07SEdward Tomasz Napierala filter, sb); 1766ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 17672b4035eeSEdward Tomasz Napierala error = ERANGE; 17682b4035eeSEdward Tomasz Napierala goto out; 1769ec125fbbSEdward Tomasz Napierala } 1770ec125fbbSEdward Tomasz Napierala 1771ec125fbbSEdward Tomasz Napierala /* 1772ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1773ec125fbbSEdward Tomasz Napierala */ 1774ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1775ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1776ec125fbbSEdward Tomasz Napierala 1777ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 17782b4035eeSEdward Tomasz Napierala out: 1779ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1780ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1781ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1782ec125fbbSEdward Tomasz Napierala return (error); 1783ec125fbbSEdward Tomasz Napierala } 1784ec125fbbSEdward Tomasz Napierala 1785ec125fbbSEdward Tomasz Napierala int 17868451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1787ec125fbbSEdward Tomasz Napierala { 1788ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1789ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1790ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1791c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1792c1a43e73SEdward Tomasz Napierala size_t bufsize; 1793c1a43e73SEdward Tomasz Napierala int error; 1794ec125fbbSEdward Tomasz Napierala 17954b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17964b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17974b5c9cf6SEdward Tomasz Napierala 1798ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1799ec125fbbSEdward Tomasz Napierala if (error != 0) 1800ec125fbbSEdward Tomasz Napierala return (error); 1801ec125fbbSEdward Tomasz Napierala 1802ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1803ec125fbbSEdward Tomasz Napierala if (error != 0) 1804ec125fbbSEdward Tomasz Napierala return (error); 1805ec125fbbSEdward Tomasz Napierala 1806ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1807ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1808ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1809ec125fbbSEdward Tomasz Napierala if (error != 0) { 1810ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1811ec125fbbSEdward Tomasz Napierala return (error); 1812ec125fbbSEdward Tomasz Napierala } 1813ec125fbbSEdward Tomasz Napierala 1814ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1815ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1816ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1817ec125fbbSEdward Tomasz Napierala return (EINVAL); 1818ec125fbbSEdward Tomasz Napierala } 1819ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1820ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1821ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1822ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1823ec125fbbSEdward Tomasz Napierala } 1824ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1825ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1826ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1827ec125fbbSEdward Tomasz Napierala return (EINVAL); 1828ec125fbbSEdward Tomasz Napierala } 1829ec125fbbSEdward Tomasz Napierala 18302b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 18312b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 18322b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 18332b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 18342b4035eeSEdward Tomasz Napierala return (E2BIG); 18352b4035eeSEdward Tomasz Napierala } 18362b4035eeSEdward Tomasz Napierala 1837ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1838ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1839ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1840ec125fbbSEdward Tomasz Napierala 1841bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1842ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1843ec125fbbSEdward Tomasz Napierala rrl_next) { 1844ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1845ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1846ec125fbbSEdward Tomasz Napierala } 1847bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1848ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 18492b4035eeSEdward Tomasz Napierala error = ERANGE; 1850b483e111SConrad Meyer sbuf_delete(sb); 18512b4035eeSEdward Tomasz Napierala goto out; 1852ec125fbbSEdward Tomasz Napierala } 1853ec125fbbSEdward Tomasz Napierala 1854ec125fbbSEdward Tomasz Napierala /* 1855ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1856ec125fbbSEdward Tomasz Napierala */ 1857ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1858ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1859ec125fbbSEdward Tomasz Napierala 1860ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 18612b4035eeSEdward Tomasz Napierala out: 1862ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1863ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1864ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1865ec125fbbSEdward Tomasz Napierala return (error); 1866ec125fbbSEdward Tomasz Napierala } 1867ec125fbbSEdward Tomasz Napierala 1868ec125fbbSEdward Tomasz Napierala int 18698451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1870ec125fbbSEdward Tomasz Napierala { 1871ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1872ec125fbbSEdward Tomasz Napierala char *inputstr; 1873c1a43e73SEdward Tomasz Napierala int error; 1874ec125fbbSEdward Tomasz Napierala 18754b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18764b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18774b5c9cf6SEdward Tomasz Napierala 1878ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1879ec125fbbSEdward Tomasz Napierala if (error != 0) 1880ec125fbbSEdward Tomasz Napierala return (error); 1881ec125fbbSEdward Tomasz Napierala 1882ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1883ec125fbbSEdward Tomasz Napierala if (error != 0) 1884ec125fbbSEdward Tomasz Napierala return (error); 1885ec125fbbSEdward Tomasz Napierala 1886ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1887ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1888ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1889ec125fbbSEdward Tomasz Napierala if (error != 0) { 1890ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1891ec125fbbSEdward Tomasz Napierala return (error); 1892ec125fbbSEdward Tomasz Napierala } 1893ec125fbbSEdward Tomasz Napierala /* 1894ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1895ec125fbbSEdward Tomasz Napierala */ 1896ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1897ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1898ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1899ec125fbbSEdward Tomasz Napierala 1900ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1901ec125fbbSEdward Tomasz Napierala error = EINVAL; 1902ec125fbbSEdward Tomasz Napierala goto out; 1903ec125fbbSEdward Tomasz Napierala } 1904ec125fbbSEdward Tomasz Napierala 1905ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1906ec125fbbSEdward Tomasz Napierala 1907ec125fbbSEdward Tomasz Napierala out: 1908ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1909ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1910ec125fbbSEdward Tomasz Napierala return (error); 1911ec125fbbSEdward Tomasz Napierala } 1912ec125fbbSEdward Tomasz Napierala 1913ec125fbbSEdward Tomasz Napierala int 19148451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1915ec125fbbSEdward Tomasz Napierala { 1916ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1917ec125fbbSEdward Tomasz Napierala char *inputstr; 1918c1a43e73SEdward Tomasz Napierala int error; 1919ec125fbbSEdward Tomasz Napierala 19204b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19214b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 19224b5c9cf6SEdward Tomasz Napierala 1923ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1924ec125fbbSEdward Tomasz Napierala if (error != 0) 1925ec125fbbSEdward Tomasz Napierala return (error); 1926ec125fbbSEdward Tomasz Napierala 1927ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1928ec125fbbSEdward Tomasz Napierala if (error != 0) 1929ec125fbbSEdward Tomasz Napierala return (error); 1930ec125fbbSEdward Tomasz Napierala 1931ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1932ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1933ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1934ec125fbbSEdward Tomasz Napierala if (error != 0) { 1935ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1936ec125fbbSEdward Tomasz Napierala return (error); 1937ec125fbbSEdward Tomasz Napierala } 1938ec125fbbSEdward Tomasz Napierala 1939ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1940ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1941ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1942ec125fbbSEdward Tomasz Napierala 1943ec125fbbSEdward Tomasz Napierala return (error); 1944ec125fbbSEdward Tomasz Napierala } 1945ec125fbbSEdward Tomasz Napierala 1946ec125fbbSEdward Tomasz Napierala /* 1947ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1948ec125fbbSEdward Tomasz Napierala */ 1949ec125fbbSEdward Tomasz Napierala void 1950ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1951ec125fbbSEdward Tomasz Napierala { 1952c1a43e73SEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1953ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1954ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1955ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1956a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1957c1a43e73SEdward Tomasz Napierala int rulecnt, i; 1958ec125fbbSEdward Tomasz Napierala 1959*f87beb93SAndriy Gapon if (!racct_enable) 1960*f87beb93SAndriy Gapon return; 1961*f87beb93SAndriy Gapon 1962*f87beb93SAndriy Gapon PROC_LOCK_ASSERT(p, MA_NOTOWNED); 19634b5c9cf6SEdward Tomasz Napierala 1964ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1965ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1966a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1967ec125fbbSEdward Tomasz Napierala 1968ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1969ec125fbbSEdward Tomasz Napierala 1970ec125fbbSEdward Tomasz Napierala again: 1971ec125fbbSEdward Tomasz Napierala /* 1972ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1973ec125fbbSEdward Tomasz Napierala * credentials. 1974ec125fbbSEdward Tomasz Napierala */ 1975ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1976bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1977ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1978ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1979ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1980ec125fbbSEdward Tomasz Napierala rulecnt++; 1981ec125fbbSEdward Tomasz Napierala } 1982ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1983ec125fbbSEdward Tomasz Napierala rulecnt++; 1984ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1985ec125fbbSEdward Tomasz Napierala rulecnt++; 1986a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1987ec125fbbSEdward Tomasz Napierala rulecnt++; 1988bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1989ec125fbbSEdward Tomasz Napierala 1990ec125fbbSEdward Tomasz Napierala /* 1991ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 1992ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 1993ec125fbbSEdward Tomasz Napierala */ 1994ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 1995ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 1996ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 1997ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 1998ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 1999ec125fbbSEdward Tomasz Napierala } 2000ec125fbbSEdward Tomasz Napierala 2001ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2002ec125fbbSEdward Tomasz Napierala 2003ec125fbbSEdward Tomasz Napierala /* 2004ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 2005ec125fbbSEdward Tomasz Napierala */ 2006bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2007ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 2008ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2009ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2010ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2011ec125fbbSEdward Tomasz Napierala goto goaround; 2012ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2013ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2014ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2015ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2016ec125fbbSEdward Tomasz Napierala rulecnt--; 2017ec125fbbSEdward Tomasz Napierala } 2018ec125fbbSEdward Tomasz Napierala } 2019ec125fbbSEdward Tomasz Napierala 2020ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 2021ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2022ec125fbbSEdward Tomasz Napierala goto goaround; 2023ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2024ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2025ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2026ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2027ec125fbbSEdward Tomasz Napierala rulecnt--; 2028ec125fbbSEdward Tomasz Napierala } 2029ec125fbbSEdward Tomasz Napierala 2030ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 2031ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2032ec125fbbSEdward Tomasz Napierala goto goaround; 2033ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2034ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2035ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2036ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2037ec125fbbSEdward Tomasz Napierala rulecnt--; 2038ec125fbbSEdward Tomasz Napierala } 2039ec125fbbSEdward Tomasz Napierala 2040a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 2041ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2042ec125fbbSEdward Tomasz Napierala goto goaround; 2043ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2044ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2045ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2046ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2047ec125fbbSEdward Tomasz Napierala rulecnt--; 2048ec125fbbSEdward Tomasz Napierala } 2049ec125fbbSEdward Tomasz Napierala 2050ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 2051ec125fbbSEdward Tomasz Napierala /* 2052ec125fbbSEdward Tomasz Napierala * Free the old rule list. 2053ec125fbbSEdward Tomasz Napierala */ 2054ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 2055ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 2056ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2057ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2058ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2059ec125fbbSEdward Tomasz Napierala } 2060ec125fbbSEdward Tomasz Napierala 2061ec125fbbSEdward Tomasz Napierala /* 2062ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 2063ec125fbbSEdward Tomasz Napierala * 2064ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 2065ec125fbbSEdward Tomasz Napierala * of iterating here? 2066ec125fbbSEdward Tomasz Napierala */ 2067ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2068ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2069ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2070ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 2071ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 2072ec125fbbSEdward Tomasz Napierala } 2073ec125fbbSEdward Tomasz Napierala 2074bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2075ec125fbbSEdward Tomasz Napierala 2076ec125fbbSEdward Tomasz Napierala return; 2077ec125fbbSEdward Tomasz Napierala } 2078ec125fbbSEdward Tomasz Napierala 2079ec125fbbSEdward Tomasz Napierala goaround: 2080bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2081ec125fbbSEdward Tomasz Napierala 2082ec125fbbSEdward Tomasz Napierala /* 2083ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 2084ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 2085ec125fbbSEdward Tomasz Napierala */ 2086ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2087ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2088ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2089ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 2090ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 2091ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 2092ec125fbbSEdward Tomasz Napierala } 2093ec125fbbSEdward Tomasz Napierala 2094ec125fbbSEdward Tomasz Napierala goto again; 2095ec125fbbSEdward Tomasz Napierala } 2096ec125fbbSEdward Tomasz Napierala 2097ec125fbbSEdward Tomasz Napierala /* 2098ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 2099ec125fbbSEdward Tomasz Napierala */ 2100ec125fbbSEdward Tomasz Napierala int 2101ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 2102ec125fbbSEdward Tomasz Napierala { 2103ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 2104c1a43e73SEdward Tomasz Napierala struct rctl_rule_link *link; 2105c1a43e73SEdward Tomasz Napierala int error; 2106ec125fbbSEdward Tomasz Napierala 21074b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2108bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21090b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 2110ec125fbbSEdward Tomasz Napierala 2111bbe4eb6dSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 2112ec125fbbSEdward Tomasz Napierala 2113ec125fbbSEdward Tomasz Napierala /* 2114ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 2115ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 2116ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 2117ec125fbbSEdward Tomasz Napierala */ 2118ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 2119ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2120ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2121ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 2122ec125fbbSEdward Tomasz Napierala if (rule == NULL) 2123ec125fbbSEdward Tomasz Napierala goto fail; 2124ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 2125ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 2126ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 2127ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2128ec125fbbSEdward Tomasz Napierala rule); 2129ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 2130ec125fbbSEdward Tomasz Napierala if (error != 0) 2131ec125fbbSEdward Tomasz Napierala goto fail; 2132ec125fbbSEdward Tomasz Napierala } else { 2133ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2134ec125fbbSEdward Tomasz Napierala link->rrl_rule); 2135ec125fbbSEdward Tomasz Napierala if (error != 0) 2136ec125fbbSEdward Tomasz Napierala goto fail; 2137ec125fbbSEdward Tomasz Napierala } 2138ec125fbbSEdward Tomasz Napierala } 2139ec125fbbSEdward Tomasz Napierala 2140ec125fbbSEdward Tomasz Napierala return (0); 2141ec125fbbSEdward Tomasz Napierala 2142ec125fbbSEdward Tomasz Napierala fail: 2143ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 2144ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 2145ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2146ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2147ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2148ec125fbbSEdward Tomasz Napierala } 2149bbe4eb6dSEdward Tomasz Napierala 2150ec125fbbSEdward Tomasz Napierala return (EAGAIN); 2151ec125fbbSEdward Tomasz Napierala } 2152ec125fbbSEdward Tomasz Napierala 2153ec125fbbSEdward Tomasz Napierala /* 2154ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 2155ec125fbbSEdward Tomasz Napierala */ 2156ec125fbbSEdward Tomasz Napierala void 2157ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 2158ec125fbbSEdward Tomasz Napierala { 2159ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 2160ec125fbbSEdward Tomasz Napierala 21614b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2162bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21634b5c9cf6SEdward Tomasz Napierala 2164ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 2165ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 2166ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2167ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2168ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2169ec125fbbSEdward Tomasz Napierala } 2170ec125fbbSEdward Tomasz Napierala } 2171ec125fbbSEdward Tomasz Napierala 2172ec125fbbSEdward Tomasz Napierala static void 2173ec125fbbSEdward Tomasz Napierala rctl_init(void) 2174ec125fbbSEdward Tomasz Napierala { 2175ec125fbbSEdward Tomasz Napierala 21764b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 21774b5c9cf6SEdward Tomasz Napierala return; 21784b5c9cf6SEdward Tomasz Napierala 2179c1a43e73SEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 218023e6fff2SEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 2181ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 2182ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 218323e6fff2SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2184ae34b6ffSEdward Tomasz Napierala 21858bd8c8f1SEdward Tomasz Napierala /* 21868bd8c8f1SEdward Tomasz Napierala * Set default values, making sure not to overwrite the ones 21878bd8c8f1SEdward Tomasz Napierala * fetched from tunables. Most of those could be set at the 21888bd8c8f1SEdward Tomasz Napierala * declaration, except for the rctl_throttle_max - we cannot 21898bd8c8f1SEdward Tomasz Napierala * set it there due to hz not being compile time constant. 21908bd8c8f1SEdward Tomasz Napierala */ 21918bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_min < 1) 2192ae34b6ffSEdward Tomasz Napierala rctl_throttle_min = 1; 21938bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_max < rctl_throttle_min) 2194ae34b6ffSEdward Tomasz Napierala rctl_throttle_max = 2 * hz; 21958bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct < 0) 2196ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct = 100; 21978bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct2 < 0) 2198ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct2 = 100; 2199ec125fbbSEdward Tomasz Napierala } 2200ec125fbbSEdward Tomasz Napierala 2201ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 2202ec125fbbSEdward Tomasz Napierala 2203ec125fbbSEdward Tomasz Napierala int 22048451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 2205ec125fbbSEdward Tomasz Napierala { 2206ec125fbbSEdward Tomasz Napierala 2207ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2208ec125fbbSEdward Tomasz Napierala } 2209ec125fbbSEdward Tomasz Napierala 2210ec125fbbSEdward Tomasz Napierala int 22118451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 2212ec125fbbSEdward Tomasz Napierala { 2213ec125fbbSEdward Tomasz Napierala 2214ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2215ec125fbbSEdward Tomasz Napierala } 2216ec125fbbSEdward Tomasz Napierala 2217ec125fbbSEdward Tomasz Napierala int 22188451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 2219ec125fbbSEdward Tomasz Napierala { 2220ec125fbbSEdward Tomasz Napierala 2221ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2222ec125fbbSEdward Tomasz Napierala } 2223ec125fbbSEdward Tomasz Napierala 2224ec125fbbSEdward Tomasz Napierala int 22258451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 2226ec125fbbSEdward Tomasz Napierala { 2227ec125fbbSEdward Tomasz Napierala 2228ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2229ec125fbbSEdward Tomasz Napierala } 2230ec125fbbSEdward Tomasz Napierala 2231ec125fbbSEdward Tomasz Napierala int 22328451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 2233ec125fbbSEdward Tomasz Napierala { 2234ec125fbbSEdward Tomasz Napierala 2235ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2236ec125fbbSEdward Tomasz Napierala } 2237ec125fbbSEdward Tomasz Napierala 2238ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 2239