1ec125fbbSEdward Tomasz Napierala /*- 2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 38a36da99SPedro F. Giffuni * 4ec125fbbSEdward Tomasz Napierala * Copyright (c) 2010 The FreeBSD Foundation 5ec125fbbSEdward Tomasz Napierala * 6ec125fbbSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 7ec125fbbSEdward Tomasz Napierala * from the FreeBSD Foundation. 8ec125fbbSEdward Tomasz Napierala * 9ec125fbbSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 10ec125fbbSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 11ec125fbbSEdward Tomasz Napierala * are met: 12ec125fbbSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 13ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 14ec125fbbSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 15ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 16ec125fbbSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 17ec125fbbSEdward Tomasz Napierala * 18ec125fbbSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19ec125fbbSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20ec125fbbSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21ec125fbbSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22ec125fbbSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23ec125fbbSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24ec125fbbSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25ec125fbbSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26ec125fbbSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27ec125fbbSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28ec125fbbSEdward Tomasz Napierala * SUCH DAMAGE. 29ec125fbbSEdward Tomasz Napierala * 30ec125fbbSEdward Tomasz Napierala * $FreeBSD$ 31ec125fbbSEdward Tomasz Napierala */ 32ec125fbbSEdward Tomasz Napierala 33ec125fbbSEdward Tomasz Napierala #include <sys/cdefs.h> 34ec125fbbSEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 35ec125fbbSEdward Tomasz Napierala 36ec125fbbSEdward Tomasz Napierala #include <sys/param.h> 37773e541eSWarner Losh #include <sys/devctl.h> 38ec125fbbSEdward Tomasz Napierala #include <sys/malloc.h> 39ec125fbbSEdward Tomasz Napierala #include <sys/queue.h> 40ec125fbbSEdward Tomasz Napierala #include <sys/refcount.h> 41ec125fbbSEdward Tomasz Napierala #include <sys/jail.h> 42ec125fbbSEdward Tomasz Napierala #include <sys/kernel.h> 43ec125fbbSEdward Tomasz Napierala #include <sys/limits.h> 44ec125fbbSEdward Tomasz Napierala #include <sys/loginclass.h> 45ec125fbbSEdward Tomasz Napierala #include <sys/priv.h> 46ec125fbbSEdward Tomasz Napierala #include <sys/proc.h> 47ec125fbbSEdward Tomasz Napierala #include <sys/racct.h> 48ec125fbbSEdward Tomasz Napierala #include <sys/rctl.h> 49ec125fbbSEdward Tomasz Napierala #include <sys/resourcevar.h> 50ec125fbbSEdward Tomasz Napierala #include <sys/sx.h> 51ec125fbbSEdward Tomasz Napierala #include <sys/sysproto.h> 52ec125fbbSEdward Tomasz Napierala #include <sys/systm.h> 53ec125fbbSEdward Tomasz Napierala #include <sys/types.h> 54ec125fbbSEdward Tomasz Napierala #include <sys/eventhandler.h> 55ec125fbbSEdward Tomasz Napierala #include <sys/lock.h> 56ec125fbbSEdward Tomasz Napierala #include <sys/mutex.h> 57ec125fbbSEdward Tomasz Napierala #include <sys/rwlock.h> 58ec125fbbSEdward Tomasz Napierala #include <sys/sbuf.h> 59ec125fbbSEdward Tomasz Napierala #include <sys/taskqueue.h> 60ec125fbbSEdward Tomasz Napierala #include <sys/tree.h> 61ec125fbbSEdward Tomasz Napierala #include <vm/uma.h> 62ec125fbbSEdward Tomasz Napierala 63ec125fbbSEdward Tomasz Napierala #ifdef RCTL 64ec125fbbSEdward Tomasz Napierala #ifndef RACCT 65ec125fbbSEdward Tomasz Napierala #error "The RCTL option requires the RACCT option" 66ec125fbbSEdward Tomasz Napierala #endif 67ec125fbbSEdward Tomasz Napierala 68ec125fbbSEdward Tomasz Napierala FEATURE(rctl, "Resource Limits"); 69ec125fbbSEdward Tomasz Napierala 70ec125fbbSEdward Tomasz Napierala #define HRF_DEFAULT 0 71ec125fbbSEdward Tomasz Napierala #define HRF_DONT_INHERIT 1 72ec125fbbSEdward Tomasz Napierala #define HRF_DONT_ACCUMULATE 2 73ec125fbbSEdward Tomasz Napierala 74ea228b48SEdward Tomasz Napierala #define RCTL_MAX_INBUFSIZE 4 * 1024 75ea228b48SEdward Tomasz Napierala #define RCTL_MAX_OUTBUFSIZE 16 * 1024 * 1024 76ec125fbbSEdward Tomasz Napierala #define RCTL_LOG_BUFSIZE 128 77ec125fbbSEdward Tomasz Napierala 7836af9869SEdward Tomasz Napierala #define RCTL_PCPU_SHIFT (10 * 1000000) 7936af9869SEdward Tomasz Napierala 80ae34b6ffSEdward Tomasz Napierala static unsigned int rctl_maxbufsize = RCTL_MAX_OUTBUFSIZE; 81f70c075eSEdward Tomasz Napierala static int rctl_log_rate_limit = 10; 82f70c075eSEdward Tomasz Napierala static int rctl_devctl_rate_limit = 10; 838bd8c8f1SEdward Tomasz Napierala 848bd8c8f1SEdward Tomasz Napierala /* 858bd8c8f1SEdward Tomasz Napierala * Values below are initialized in rctl_init(). 868bd8c8f1SEdward Tomasz Napierala */ 878bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min = -1; 888bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max = -1; 898bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct = -1; 908bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2 = -1; 918bd8c8f1SEdward Tomasz Napierala 928bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS); 938bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS); 948bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS); 958bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS); 962b4035eeSEdward Tomasz Napierala 97e0d69c5aSPawel Biernacki SYSCTL_NODE(_kern_racct, OID_AUTO, rctl, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 98e0d69c5aSPawel Biernacki "Resource Limits"); 992b4035eeSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, maxbufsize, CTLFLAG_RWTUN, 1002b4035eeSEdward Tomasz Napierala &rctl_maxbufsize, 0, "Maximum output buffer size"); 101f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW, 102f70c075eSEdward Tomasz Napierala &rctl_log_rate_limit, 0, "Maximum number of log messages per second"); 1038bd8c8f1SEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RWTUN, 104f70c075eSEdward Tomasz Napierala &rctl_devctl_rate_limit, 0, "Maximum number of devctl messages per second"); 1058bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_min, 106e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 107e0d69c5aSPawel Biernacki &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, 111e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 112e0d69c5aSPawel Biernacki &rctl_throttle_max_sysctl, "IU", 1138bd8c8f1SEdward Tomasz Napierala "Longest throttling duration, in hz"); 1148bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_max", &rctl_throttle_max); 1158bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct, 116e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 117e0d69c5aSPawel Biernacki &rctl_throttle_pct_sysctl, "IU", 118ae34b6ffSEdward Tomasz Napierala "Throttling penalty for process consumption, in percent"); 1198bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct", &rctl_throttle_pct); 1208bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct2, 121e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 122e0d69c5aSPawel Biernacki &rctl_throttle_pct2_sysctl, "IU", 123ae34b6ffSEdward Tomasz Napierala "Throttling penalty for container consumption, in percent"); 1248bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct2", &rctl_throttle_pct2); 1252b4035eeSEdward Tomasz Napierala 126ec125fbbSEdward Tomasz Napierala /* 127ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 128ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 129ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 130ec125fbbSEdward Tomasz Napierala */ 131ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 132ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 133ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 134ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 135ec125fbbSEdward Tomasz Napierala }; 136ec125fbbSEdward Tomasz Napierala 137ec125fbbSEdward Tomasz Napierala struct dict { 138ec125fbbSEdward Tomasz Napierala const char *d_name; 139ec125fbbSEdward Tomasz Napierala int d_value; 140ec125fbbSEdward Tomasz Napierala }; 141ec125fbbSEdward Tomasz Napierala 142ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 143ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 144ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 145ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 146ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 147ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 148ec125fbbSEdward Tomasz Napierala 149ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 15085a2f1b4SEdward Tomasz Napierala { "cputime", RACCT_CPU }, 15185a2f1b4SEdward Tomasz Napierala { "datasize", RACCT_DATA }, 15285a2f1b4SEdward Tomasz Napierala { "stacksize", RACCT_STACK }, 15385a2f1b4SEdward Tomasz Napierala { "coredumpsize", RACCT_CORE }, 15485a2f1b4SEdward Tomasz Napierala { "memoryuse", RACCT_RSS }, 15585a2f1b4SEdward Tomasz Napierala { "memorylocked", RACCT_MEMLOCK }, 15685a2f1b4SEdward Tomasz Napierala { "maxproc", RACCT_NPROC }, 15785a2f1b4SEdward Tomasz Napierala { "openfiles", RACCT_NOFILE }, 15885a2f1b4SEdward Tomasz Napierala { "vmemoryuse", RACCT_VMEM }, 15985a2f1b4SEdward Tomasz Napierala { "pseudoterminals", RACCT_NPTS }, 16085a2f1b4SEdward Tomasz Napierala { "swapuse", RACCT_SWAP }, 161ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 162ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 163ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 164ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 165ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 166ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 167ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 168ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 169ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 17036af9869SEdward Tomasz Napierala { "pcpu", RACCT_PCTCPU }, 171ae34b6ffSEdward Tomasz Napierala { "readbps", RACCT_READBPS }, 172ae34b6ffSEdward Tomasz Napierala { "writebps", RACCT_WRITEBPS }, 173ae34b6ffSEdward Tomasz Napierala { "readiops", RACCT_READIOPS }, 174ae34b6ffSEdward Tomasz Napierala { "writeiops", RACCT_WRITEIOPS }, 175ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 176ec125fbbSEdward Tomasz Napierala 177ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 178ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 179ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 180ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 181ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 182ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 183ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 184ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 185ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 186ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 187ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 188ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 189ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 190ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 191ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 192ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 193ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 194ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 195ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 196ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 197ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 198ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 199ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 200ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 201ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 202ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 203ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 204ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 205ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 206ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 207ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 208ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 209ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 210ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 211ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 212ae34b6ffSEdward Tomasz Napierala { "throttle", RCTL_ACTION_THROTTLE }, 213ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 214ec125fbbSEdward Tomasz Napierala 215ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 216ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 217ec125fbbSEdward Tomasz Napierala 218ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 219c1a43e73SEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 2204c230cdaSEdward Tomasz Napierala 221ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 222ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 223ec125fbbSEdward Tomasz Napierala 224d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 225ec125fbbSEdward Tomasz Napierala 2268bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS) 2278bd8c8f1SEdward Tomasz Napierala { 228c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_min; 2298bd8c8f1SEdward Tomasz Napierala 2308bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2318bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2328bd8c8f1SEdward Tomasz Napierala return (error); 2338bd8c8f1SEdward Tomasz Napierala if (val < 1 || val > rctl_throttle_max) 2348bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2358bd8c8f1SEdward Tomasz Napierala 236bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2378bd8c8f1SEdward Tomasz Napierala rctl_throttle_min = val; 238bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2398bd8c8f1SEdward Tomasz Napierala 2408bd8c8f1SEdward Tomasz Napierala return (0); 2418bd8c8f1SEdward Tomasz Napierala } 2428bd8c8f1SEdward Tomasz Napierala 2438bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS) 2448bd8c8f1SEdward Tomasz Napierala { 245c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_max; 2468bd8c8f1SEdward Tomasz Napierala 2478bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2488bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2498bd8c8f1SEdward Tomasz Napierala return (error); 2508bd8c8f1SEdward Tomasz Napierala if (val < rctl_throttle_min) 2518bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2528bd8c8f1SEdward Tomasz Napierala 253bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2548bd8c8f1SEdward Tomasz Napierala rctl_throttle_max = val; 255bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2568bd8c8f1SEdward Tomasz Napierala 2578bd8c8f1SEdward Tomasz Napierala return (0); 2588bd8c8f1SEdward Tomasz Napierala } 2598bd8c8f1SEdward Tomasz Napierala 2608bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS) 2618bd8c8f1SEdward Tomasz Napierala { 262c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct; 2638bd8c8f1SEdward Tomasz Napierala 2648bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2658bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2668bd8c8f1SEdward Tomasz Napierala return (error); 2678bd8c8f1SEdward Tomasz Napierala if (val < 0) 2688bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2698bd8c8f1SEdward Tomasz Napierala 270bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2718bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct = val; 272bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2738bd8c8f1SEdward Tomasz Napierala 2748bd8c8f1SEdward Tomasz Napierala return (0); 2758bd8c8f1SEdward Tomasz Napierala } 2768bd8c8f1SEdward Tomasz Napierala 2778bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS) 2788bd8c8f1SEdward Tomasz Napierala { 279c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct2; 2808bd8c8f1SEdward Tomasz Napierala 2818bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2828bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2838bd8c8f1SEdward Tomasz Napierala return (error); 2848bd8c8f1SEdward Tomasz Napierala if (val < 0) 2858bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2868bd8c8f1SEdward Tomasz Napierala 287bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2888bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct2 = val; 289bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2908bd8c8f1SEdward Tomasz Napierala 2918bd8c8f1SEdward Tomasz Napierala return (0); 2928bd8c8f1SEdward Tomasz Napierala } 2938bd8c8f1SEdward Tomasz Napierala 294ec125fbbSEdward Tomasz Napierala static const char * 295ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 296ec125fbbSEdward Tomasz Napierala { 297ec125fbbSEdward Tomasz Napierala int i; 298ec125fbbSEdward Tomasz Napierala 299ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 300ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 301ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 302ec125fbbSEdward Tomasz Napierala } 303ec125fbbSEdward Tomasz Napierala 304ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 305ec125fbbSEdward Tomasz Napierala } 306ec125fbbSEdward Tomasz Napierala 307ec125fbbSEdward Tomasz Napierala static const char * 308ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 309ec125fbbSEdward Tomasz Napierala { 310ec125fbbSEdward Tomasz Napierala int i; 311ec125fbbSEdward Tomasz Napierala 312ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 313ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 314ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 315ec125fbbSEdward Tomasz Napierala } 316ec125fbbSEdward Tomasz Napierala 317ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 318ec125fbbSEdward Tomasz Napierala } 319ec125fbbSEdward Tomasz Napierala 320ec125fbbSEdward Tomasz Napierala const char * 321ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 322ec125fbbSEdward Tomasz Napierala { 323ec125fbbSEdward Tomasz Napierala int i; 324ec125fbbSEdward Tomasz Napierala 325ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 326ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 327ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 328ec125fbbSEdward Tomasz Napierala } 329ec125fbbSEdward Tomasz Napierala 330ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 331ec125fbbSEdward Tomasz Napierala } 332ec125fbbSEdward Tomasz Napierala 333ac3c9819SEdward Tomasz Napierala static struct racct * 334ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 335ac3c9819SEdward Tomasz Napierala { 336ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 337ac3c9819SEdward Tomasz Napierala 338ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 339bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 340ac3c9819SEdward Tomasz Napierala 341ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 342ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 343ac3c9819SEdward Tomasz Napierala return (p->p_racct); 344ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 345ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 346ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 347ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 348ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 349ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 350ac3c9819SEdward Tomasz Napierala default: 351ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 352ac3c9819SEdward Tomasz Napierala } 353ac3c9819SEdward Tomasz Napierala } 354ac3c9819SEdward Tomasz Napierala 355ec125fbbSEdward Tomasz Napierala /* 356ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 357ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 358ec125fbbSEdward Tomasz Napierala */ 359ec125fbbSEdward Tomasz Napierala static int64_t 360ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 361ec125fbbSEdward Tomasz Napierala { 362ac3c9819SEdward Tomasz Napierala const struct racct *racct; 363c1a43e73SEdward Tomasz Napierala int64_t available; 364ec125fbbSEdward Tomasz Napierala 3654b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 366bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 367ec125fbbSEdward Tomasz Napierala 368ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 369ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 370ec125fbbSEdward Tomasz Napierala 371ec125fbbSEdward Tomasz Napierala return (available); 372ec125fbbSEdward Tomasz Napierala } 373ec125fbbSEdward Tomasz Napierala 374ec125fbbSEdward Tomasz Napierala /* 375ae34b6ffSEdward Tomasz Napierala * Called every second for proc, uidinfo, loginclass, and jail containers. 376ae34b6ffSEdward Tomasz Napierala * If the limit isn't exceeded, it decreases the usage amount to zero. 377ae34b6ffSEdward Tomasz Napierala * Otherwise, it decreases it by the value of the limit. This way 378ae34b6ffSEdward Tomasz Napierala * resource consumption exceeding the limit "carries over" to the next 379ae34b6ffSEdward Tomasz Napierala * period. 380ec125fbbSEdward Tomasz Napierala */ 381ae34b6ffSEdward Tomasz Napierala void 382ae34b6ffSEdward Tomasz Napierala rctl_throttle_decay(struct racct *racct, int resource) 383ec125fbbSEdward Tomasz Napierala { 384ae34b6ffSEdward Tomasz Napierala struct rctl_rule *rule; 385ae34b6ffSEdward Tomasz Napierala struct rctl_rule_link *link; 386ae34b6ffSEdward Tomasz Napierala int64_t minavailable; 387ec125fbbSEdward Tomasz Napierala 3884b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 389bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 390ec125fbbSEdward Tomasz Napierala 391ae34b6ffSEdward Tomasz Napierala minavailable = INT64_MAX; 392ec125fbbSEdward Tomasz Napierala 393ae34b6ffSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 394ae34b6ffSEdward Tomasz Napierala rule = link->rrl_rule; 395ae34b6ffSEdward Tomasz Napierala 396ae34b6ffSEdward Tomasz Napierala if (rule->rr_resource != resource) 397ae34b6ffSEdward Tomasz Napierala continue; 398ae34b6ffSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_THROTTLE) 399ae34b6ffSEdward Tomasz Napierala continue; 400ae34b6ffSEdward Tomasz Napierala 401ae34b6ffSEdward Tomasz Napierala if (rule->rr_amount < minavailable) 402ae34b6ffSEdward Tomasz Napierala minavailable = rule->rr_amount; 403ae34b6ffSEdward Tomasz Napierala } 404ae34b6ffSEdward Tomasz Napierala 405ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] < minavailable) { 406ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = 0; 407ae34b6ffSEdward Tomasz Napierala } else { 408ae34b6ffSEdward Tomasz Napierala /* 409ae34b6ffSEdward Tomasz Napierala * Cap utilization counter at ten times the limit. Otherwise, 410ae34b6ffSEdward Tomasz Napierala * if we changed the rule lowering the allowed amount, it could 411ae34b6ffSEdward Tomasz Napierala * take unreasonably long time for the accumulated resource 412ae34b6ffSEdward Tomasz Napierala * usage to drop. 413ae34b6ffSEdward Tomasz Napierala */ 414ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] > minavailable * 10) 415ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = minavailable * 10; 416ae34b6ffSEdward Tomasz Napierala 417ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] -= minavailable; 418ae34b6ffSEdward Tomasz Napierala } 419ec125fbbSEdward Tomasz Napierala } 420ec125fbbSEdward Tomasz Napierala 421ec125fbbSEdward Tomasz Napierala /* 422af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 42336af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 42436af9869SEdward Tomasz Napierala */ 42536af9869SEdward Tomasz Napierala int64_t 42636af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 42736af9869SEdward Tomasz Napierala struct rctl_rule *rule; 42836af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 42936af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 43036af9869SEdward Tomasz Napierala 4314b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 432bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 4334b5c9cf6SEdward Tomasz Napierala 43436af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 43536af9869SEdward Tomasz Napierala limit = 0; 43636af9869SEdward Tomasz Napierala 43736af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 43836af9869SEdward Tomasz Napierala rule = link->rrl_rule; 43936af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 44036af9869SEdward Tomasz Napierala continue; 44136af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 44236af9869SEdward Tomasz Napierala continue; 44336af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 44436af9869SEdward Tomasz Napierala if (available < minavailable) { 44536af9869SEdward Tomasz Napierala minavailable = available; 44636af9869SEdward Tomasz Napierala limit = rule->rr_amount; 44736af9869SEdward Tomasz Napierala } 44836af9869SEdward Tomasz Napierala } 44936af9869SEdward Tomasz Napierala 45036af9869SEdward Tomasz Napierala /* 45136af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 452e3043798SPedro F. Giffuni * %cpu resource. This makes %cpu throttling more aggressive 45336af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 45436af9869SEdward Tomasz Napierala */ 45536af9869SEdward Tomasz Napierala if (limit != 0) { 45636af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 45736af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 45836af9869SEdward Tomasz Napierala else 45936af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 46036af9869SEdward Tomasz Napierala } 46136af9869SEdward Tomasz Napierala 46236af9869SEdward Tomasz Napierala return (minavailable); 46336af9869SEdward Tomasz Napierala } 46436af9869SEdward Tomasz Napierala 465ae34b6ffSEdward Tomasz Napierala static uint64_t 466ae34b6ffSEdward Tomasz Napierala xadd(uint64_t a, uint64_t b) 467ae34b6ffSEdward Tomasz Napierala { 468ae34b6ffSEdward Tomasz Napierala uint64_t c; 469ae34b6ffSEdward Tomasz Napierala 470ae34b6ffSEdward Tomasz Napierala c = a + b; 471ae34b6ffSEdward Tomasz Napierala 472ae34b6ffSEdward Tomasz Napierala /* 473ae34b6ffSEdward Tomasz Napierala * Detect overflow. 474ae34b6ffSEdward Tomasz Napierala */ 475ae34b6ffSEdward Tomasz Napierala if (c < a || c < b) 476ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 477ae34b6ffSEdward Tomasz Napierala 478ae34b6ffSEdward Tomasz Napierala return (c); 479ae34b6ffSEdward Tomasz Napierala } 480ae34b6ffSEdward Tomasz Napierala 481ae34b6ffSEdward Tomasz Napierala static uint64_t 482ae34b6ffSEdward Tomasz Napierala xmul(uint64_t a, uint64_t b) 483ae34b6ffSEdward Tomasz Napierala { 484ae34b6ffSEdward Tomasz Napierala 485f459a818SEdward Tomasz Napierala if (b != 0 && a > UINT64_MAX / b) 486ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 487ae34b6ffSEdward Tomasz Napierala 488f459a818SEdward Tomasz Napierala return (a * b); 489ae34b6ffSEdward Tomasz Napierala } 490ae34b6ffSEdward Tomasz Napierala 49136af9869SEdward Tomasz Napierala /* 492ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 493ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 494ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 495ec125fbbSEdward Tomasz Napierala */ 496ec125fbbSEdward Tomasz Napierala int 497ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 498ec125fbbSEdward Tomasz Napierala { 499f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 500f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 501ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 502ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 503ec125fbbSEdward Tomasz Napierala struct sbuf sb; 504c1a43e73SEdward Tomasz Napierala char *buf; 505ae34b6ffSEdward Tomasz Napierala int64_t available; 506ae34b6ffSEdward Tomasz Napierala uint64_t sleep_ms, sleep_ratio; 507ec125fbbSEdward Tomasz Napierala int should_deny = 0; 508ec125fbbSEdward Tomasz Napierala 5094b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 510bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 511ec125fbbSEdward Tomasz Napierala 512ec125fbbSEdward Tomasz Napierala /* 513ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 514ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 515ec125fbbSEdward Tomasz Napierala */ 516ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 517ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 518ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 519ec125fbbSEdward Tomasz Napierala continue; 520ae34b6ffSEdward Tomasz Napierala 521ae34b6ffSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 522ae34b6ffSEdward Tomasz Napierala if (available >= (int64_t)amount) { 523ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 524ec125fbbSEdward Tomasz Napierala continue; 525ec125fbbSEdward Tomasz Napierala } 526ec125fbbSEdward Tomasz Napierala 527ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 528ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 529ec125fbbSEdward Tomasz Napierala should_deny = 1; 530ec125fbbSEdward Tomasz Napierala continue; 531ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 532ec125fbbSEdward Tomasz Napierala /* 533ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 534ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 535ec125fbbSEdward Tomasz Napierala */ 536ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 537ec125fbbSEdward Tomasz Napierala continue; 538ec125fbbSEdward Tomasz Napierala 53972a401d9SEdward Tomasz Napierala /* 54072a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 54172a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 54272a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 54372a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 54472a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 54572a401d9SEdward Tomasz Napierala */ 54672a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 54772a401d9SEdward Tomasz Napierala continue; 54872a401d9SEdward Tomasz Napierala 549f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 550f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 551ec125fbbSEdward Tomasz Napierala continue; 552ec125fbbSEdward Tomasz Napierala 553ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 554ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 555ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 556ec125fbbSEdward Tomasz Napierala continue; 557ec125fbbSEdward Tomasz Napierala } 558ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 559ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 560ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 561ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 562ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 563ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 564a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 565ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 566ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 567ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 568ec125fbbSEdward Tomasz Napierala continue; 569ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 570ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 571ec125fbbSEdward Tomasz Napierala continue; 572ec125fbbSEdward Tomasz Napierala 57372a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 57472a401d9SEdward Tomasz Napierala continue; 57572a401d9SEdward Tomasz Napierala 576f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 577f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 578f70c075eSEdward Tomasz Napierala continue; 579f70c075eSEdward Tomasz Napierala 580ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 581ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 582ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 583ec125fbbSEdward Tomasz Napierala continue; 584ec125fbbSEdward Tomasz Napierala } 585ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 586ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 587ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 588ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 589ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 590a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 591ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 592887611b1SWarner Losh devctl_notify("RCTL", "rule", "matched", 593887611b1SWarner Losh sbuf_data(&sb)); 594ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 595ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 596ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 597ec125fbbSEdward Tomasz Napierala continue; 598ae34b6ffSEdward Tomasz Napierala case RCTL_ACTION_THROTTLE: 599ae34b6ffSEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 600ae34b6ffSEdward Tomasz Napierala continue; 601ae34b6ffSEdward Tomasz Napierala 602e8a5a1adSJason A. Harmening if (rule->rr_amount == 0) { 603e8a5a1adSJason A. Harmening racct_proc_throttle(p, rctl_throttle_max); 604e8a5a1adSJason A. Harmening continue; 605e8a5a1adSJason A. Harmening } 606e8a5a1adSJason A. Harmening 607ae34b6ffSEdward Tomasz Napierala /* 608ae34b6ffSEdward Tomasz Napierala * Make the process sleep for a fraction of second 609ae34b6ffSEdward Tomasz Napierala * proportional to the ratio of process' resource 610ae34b6ffSEdward Tomasz Napierala * utilization compared to the limit. The point is 611ae34b6ffSEdward Tomasz Napierala * to penalize resource hogs: processes that consume 612ae34b6ffSEdward Tomasz Napierala * more of the available resources sleep for longer. 613ae34b6ffSEdward Tomasz Napierala * 614ae34b6ffSEdward Tomasz Napierala * We're trying to defer division until the very end, 615ae34b6ffSEdward Tomasz Napierala * to minimize the rounding effects. The following 616ae34b6ffSEdward Tomasz Napierala * calculation could have been written in a clearer 617ae34b6ffSEdward Tomasz Napierala * way like this: 618ae34b6ffSEdward Tomasz Napierala * 619ae34b6ffSEdward Tomasz Napierala * sleep_ms = hz * p->p_racct->r_resources[resource] / 620ae34b6ffSEdward Tomasz Napierala * rule->rr_amount; 621ae34b6ffSEdward Tomasz Napierala * sleep_ms *= rctl_throttle_pct / 100; 622ae34b6ffSEdward Tomasz Napierala * if (sleep_ms < rctl_throttle_min) 623ae34b6ffSEdward Tomasz Napierala * sleep_ms = rctl_throttle_min; 624ae34b6ffSEdward Tomasz Napierala * 625ae34b6ffSEdward Tomasz Napierala */ 626ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(hz, p->p_racct->r_resources[resource]); 627ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(sleep_ms, rctl_throttle_pct) / 100; 628ae34b6ffSEdward Tomasz Napierala if (sleep_ms < rctl_throttle_min * rule->rr_amount) 629ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_min * rule->rr_amount; 630ae34b6ffSEdward Tomasz Napierala 631ae34b6ffSEdward Tomasz Napierala /* 632ae34b6ffSEdward Tomasz Napierala * Multiply that by the ratio of the resource 633ae34b6ffSEdward Tomasz Napierala * consumption for the container compared to the limit, 634ae34b6ffSEdward Tomasz Napierala * squared. In other words, a process in a container 635ae34b6ffSEdward Tomasz Napierala * that is two times over the limit will be throttled 636ae34b6ffSEdward Tomasz Napierala * four times as much for hitting the same rule. The 637ae34b6ffSEdward Tomasz Napierala * point is to penalize processes more if the container 638ae34b6ffSEdward Tomasz Napierala * itself (eg certain UID or jail) is above the limit. 639ae34b6ffSEdward Tomasz Napierala */ 640ae34b6ffSEdward Tomasz Napierala if (available < 0) 641ae34b6ffSEdward Tomasz Napierala sleep_ratio = -available / rule->rr_amount; 642ae34b6ffSEdward Tomasz Napierala else 643ae34b6ffSEdward Tomasz Napierala sleep_ratio = 0; 644ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, sleep_ratio); 645ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, rctl_throttle_pct2) / 100; 646ae34b6ffSEdward Tomasz Napierala sleep_ms = xadd(sleep_ms, xmul(sleep_ms, sleep_ratio)); 647ae34b6ffSEdward Tomasz Napierala 648ae34b6ffSEdward Tomasz Napierala /* 649ae34b6ffSEdward Tomasz Napierala * Finally the division. 650ae34b6ffSEdward Tomasz Napierala */ 651ae34b6ffSEdward Tomasz Napierala sleep_ms /= rule->rr_amount; 652ae34b6ffSEdward Tomasz Napierala 653ae34b6ffSEdward Tomasz Napierala if (sleep_ms > rctl_throttle_max) 654ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_max; 655ae34b6ffSEdward Tomasz Napierala #if 0 65674a7305aSEdward Tomasz Napierala printf("%s: pid %d (%s), %jd of %jd, will sleep for %ju ms (ratio %ju, available %jd)\n", 657ae34b6ffSEdward Tomasz Napierala __func__, p->p_pid, p->p_comm, 658ae34b6ffSEdward Tomasz Napierala p->p_racct->r_resources[resource], 65974a7305aSEdward Tomasz Napierala rule->rr_amount, (uintmax_t)sleep_ms, 66074a7305aSEdward Tomasz Napierala (uintmax_t)sleep_ratio, (intmax_t)available); 661ae34b6ffSEdward Tomasz Napierala #endif 662ae34b6ffSEdward Tomasz Napierala 663ae34b6ffSEdward Tomasz Napierala KASSERT(sleep_ms >= rctl_throttle_min, ("%s: %ju < %d\n", 664ae34b6ffSEdward Tomasz Napierala __func__, (uintmax_t)sleep_ms, rctl_throttle_min)); 665ae34b6ffSEdward Tomasz Napierala racct_proc_throttle(p, sleep_ms); 666ae34b6ffSEdward Tomasz Napierala continue; 667ec125fbbSEdward Tomasz Napierala default: 668ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 669ec125fbbSEdward Tomasz Napierala continue; 670ec125fbbSEdward Tomasz Napierala 67172a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 67272a401d9SEdward Tomasz Napierala continue; 67372a401d9SEdward Tomasz Napierala 674ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 675ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 676ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 677ec125fbbSEdward Tomasz Napierala rule->rr_action)); 678ec125fbbSEdward Tomasz Napierala 679ec125fbbSEdward Tomasz Napierala /* 680ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 681ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 682ec125fbbSEdward Tomasz Napierala */ 6838451d0ddSKip Macy kern_psignal(p, rule->rr_action); 684ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 685ec125fbbSEdward Tomasz Napierala continue; 686ec125fbbSEdward Tomasz Napierala } 687ec125fbbSEdward Tomasz Napierala } 688ec125fbbSEdward Tomasz Napierala 689ec125fbbSEdward Tomasz Napierala if (should_deny) { 690ec125fbbSEdward Tomasz Napierala /* 691ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 692ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 693ec125fbbSEdward Tomasz Napierala */ 694ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 695ec125fbbSEdward Tomasz Napierala } 696ec125fbbSEdward Tomasz Napierala 697ec125fbbSEdward Tomasz Napierala return (0); 698ec125fbbSEdward Tomasz Napierala } 699ec125fbbSEdward Tomasz Napierala 700ec125fbbSEdward Tomasz Napierala uint64_t 701ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 702ec125fbbSEdward Tomasz Napierala { 703ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 704ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 705ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 706ec125fbbSEdward Tomasz Napierala 7074b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 708bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 709ec125fbbSEdward Tomasz Napierala 710ec125fbbSEdward Tomasz Napierala /* 711ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 712ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 713ec125fbbSEdward Tomasz Napierala */ 714ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 715ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 716ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 717ec125fbbSEdward Tomasz Napierala continue; 718ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 719ec125fbbSEdward Tomasz Napierala continue; 720ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 721ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 722ec125fbbSEdward Tomasz Napierala } 723ec125fbbSEdward Tomasz Napierala 724ec125fbbSEdward Tomasz Napierala return (amount); 725ec125fbbSEdward Tomasz Napierala } 726ec125fbbSEdward Tomasz Napierala 727ec125fbbSEdward Tomasz Napierala uint64_t 728ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 729ec125fbbSEdward Tomasz Napierala { 730ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 731ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 732ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 733ec125fbbSEdward Tomasz Napierala 734ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 735ec125fbbSEdward Tomasz Napierala 7364b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 737bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 738ec125fbbSEdward Tomasz Napierala 739ec125fbbSEdward Tomasz Napierala /* 740ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 741ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 742ec125fbbSEdward Tomasz Napierala */ 743ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 744ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 745ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 746ec125fbbSEdward Tomasz Napierala continue; 747ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 748ec125fbbSEdward Tomasz Napierala continue; 749ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 750ec125fbbSEdward Tomasz Napierala if (available < minavailable) 751ec125fbbSEdward Tomasz Napierala minavailable = available; 752ec125fbbSEdward Tomasz Napierala } 753ec125fbbSEdward Tomasz Napierala 754ec125fbbSEdward Tomasz Napierala /* 755ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 756ec125fbbSEdward Tomasz Napierala */ 757ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 758ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 759ec125fbbSEdward Tomasz Napierala minavailable += allocated; 760ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 761ec125fbbSEdward Tomasz Napierala minavailable = 0; 762bbe4eb6dSEdward Tomasz Napierala 763ec125fbbSEdward Tomasz Napierala return (minavailable); 764ec125fbbSEdward Tomasz Napierala } 765ec125fbbSEdward Tomasz Napierala 766ec125fbbSEdward Tomasz Napierala static int 767ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 768ec125fbbSEdward Tomasz Napierala { 769ec125fbbSEdward Tomasz Napierala 7704b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7714b5c9cf6SEdward Tomasz Napierala 772ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 773ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 774ec125fbbSEdward Tomasz Napierala return (0); 775ec125fbbSEdward Tomasz Napierala 776ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 777ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 778ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 779ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 780ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 781ec125fbbSEdward Tomasz Napierala return (0); 782ec125fbbSEdward Tomasz Napierala break; 783ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 784ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 785ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 786ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 787ec125fbbSEdward Tomasz Napierala return (0); 788ec125fbbSEdward Tomasz Napierala break; 789ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 790415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 791415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 792415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 793ec125fbbSEdward Tomasz Napierala return (0); 794ec125fbbSEdward Tomasz Napierala break; 795ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 796a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 797a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 798a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 799ec125fbbSEdward Tomasz Napierala return (0); 800ec125fbbSEdward Tomasz Napierala break; 801ec125fbbSEdward Tomasz Napierala default: 802ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 803ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 804ec125fbbSEdward Tomasz Napierala } 805ec125fbbSEdward Tomasz Napierala } 806ec125fbbSEdward Tomasz Napierala 807ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 808ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 809ec125fbbSEdward Tomasz Napierala return (0); 810ec125fbbSEdward Tomasz Napierala } 811ec125fbbSEdward Tomasz Napierala 812ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 813ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 814ec125fbbSEdward Tomasz Napierala return (0); 815ec125fbbSEdward Tomasz Napierala } 816ec125fbbSEdward Tomasz Napierala 817ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 818ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 819ec125fbbSEdward Tomasz Napierala return (0); 820ec125fbbSEdward Tomasz Napierala } 821ec125fbbSEdward Tomasz Napierala 822ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 823ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 824ec125fbbSEdward Tomasz Napierala return (0); 825ec125fbbSEdward Tomasz Napierala } 826ec125fbbSEdward Tomasz Napierala 827ec125fbbSEdward Tomasz Napierala return (1); 828ec125fbbSEdward Tomasz Napierala } 829ec125fbbSEdward Tomasz Napierala 830ec125fbbSEdward Tomasz Napierala static int 831ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 832ec125fbbSEdward Tomasz Napierala { 833ec125fbbSEdward Tomasz Napierala int i; 834ec125fbbSEdward Tomasz Napierala 835ec125fbbSEdward Tomasz Napierala if (value == NULL) 836ec125fbbSEdward Tomasz Napierala return (EINVAL); 837ec125fbbSEdward Tomasz Napierala 838ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 839ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 840ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 841ec125fbbSEdward Tomasz Napierala return (0); 842ec125fbbSEdward Tomasz Napierala } 843ec125fbbSEdward Tomasz Napierala } 844ec125fbbSEdward Tomasz Napierala 845ec125fbbSEdward Tomasz Napierala return (EINVAL); 846ec125fbbSEdward Tomasz Napierala } 847ec125fbbSEdward Tomasz Napierala 848ec125fbbSEdward Tomasz Napierala static int 849ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 850ec125fbbSEdward Tomasz Napierala { 851ec125fbbSEdward Tomasz Napierala char *end; 852ec125fbbSEdward Tomasz Napierala 853ec125fbbSEdward Tomasz Napierala if (str == NULL) 854ec125fbbSEdward Tomasz Napierala return (EINVAL); 855ec125fbbSEdward Tomasz Napierala 856ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 857ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 858ec125fbbSEdward Tomasz Napierala return (EINVAL); 859ec125fbbSEdward Tomasz Napierala 860ec125fbbSEdward Tomasz Napierala return (0); 861ec125fbbSEdward Tomasz Napierala } 862ec125fbbSEdward Tomasz Napierala 863ec125fbbSEdward Tomasz Napierala static int 864ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 865ec125fbbSEdward Tomasz Napierala { 866ec125fbbSEdward Tomasz Napierala char *end; 867ec125fbbSEdward Tomasz Napierala 868ec125fbbSEdward Tomasz Napierala if (str == NULL) 869ec125fbbSEdward Tomasz Napierala return (EINVAL); 870ec125fbbSEdward Tomasz Napierala 871ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 872ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 873ec125fbbSEdward Tomasz Napierala return (EINVAL); 874ec125fbbSEdward Tomasz Napierala 875b450d447SEdward Tomasz Napierala if (*value < 0) 876b450d447SEdward Tomasz Napierala return (ERANGE); 877b450d447SEdward Tomasz Napierala 878ec125fbbSEdward Tomasz Napierala return (0); 879ec125fbbSEdward Tomasz Napierala } 880ec125fbbSEdward Tomasz Napierala 881ec125fbbSEdward Tomasz Napierala /* 882ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 883ec125fbbSEdward Tomasz Napierala */ 884ec125fbbSEdward Tomasz Napierala static void 885ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 886ec125fbbSEdward Tomasz Napierala { 887ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 888ec125fbbSEdward Tomasz Napierala 8894b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 890ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 891ec125fbbSEdward Tomasz Napierala 892ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 893ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 894ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 895ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 896ec125fbbSEdward Tomasz Napierala 897bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 898ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 899bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 900ec125fbbSEdward Tomasz Napierala } 901ec125fbbSEdward Tomasz Napierala 902ec125fbbSEdward Tomasz Napierala static int 903ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 904ec125fbbSEdward Tomasz Napierala { 905ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 906ec125fbbSEdward Tomasz Napierala 9074b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 908ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 909bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 910ec125fbbSEdward Tomasz Napierala 911ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 912ec125fbbSEdward Tomasz Napierala if (link == NULL) 913ec125fbbSEdward Tomasz Napierala return (ENOMEM); 914ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 915ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 916ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 917ec125fbbSEdward Tomasz Napierala 918ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 919bbe4eb6dSEdward Tomasz Napierala 920ec125fbbSEdward Tomasz Napierala return (0); 921ec125fbbSEdward Tomasz Napierala } 922ec125fbbSEdward Tomasz Napierala 923ec125fbbSEdward Tomasz Napierala /* 924ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 925ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 926ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 927ec125fbbSEdward Tomasz Napierala */ 928ec125fbbSEdward Tomasz Napierala static int 929ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 930ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 931ec125fbbSEdward Tomasz Napierala { 932ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 933c1a43e73SEdward Tomasz Napierala int removed = 0; 934ec125fbbSEdward Tomasz Napierala 9354b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 936bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 937ec125fbbSEdward Tomasz Napierala 938ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 939ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 940ec125fbbSEdward Tomasz Napierala continue; 941ec125fbbSEdward Tomasz Napierala 942ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 943ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 944ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 945ec125fbbSEdward Tomasz Napierala removed++; 946ec125fbbSEdward Tomasz Napierala } 947ec125fbbSEdward Tomasz Napierala return (removed); 948ec125fbbSEdward Tomasz Napierala } 949ec125fbbSEdward Tomasz Napierala 950ec125fbbSEdward Tomasz Napierala static void 951ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 952ec125fbbSEdward Tomasz Napierala { 953ec125fbbSEdward Tomasz Napierala 9544b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9554b5c9cf6SEdward Tomasz Napierala 956ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 957ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 958ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 959a7ad07bfSEdward Tomasz Napierala break; 960ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 961a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 962a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 963ec125fbbSEdward Tomasz Napierala break; 964ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 965ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 966ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 967ec125fbbSEdward Tomasz Napierala break; 968ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 969415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 970415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 971ec125fbbSEdward Tomasz Napierala break; 972ec125fbbSEdward Tomasz Napierala default: 973ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 974ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 975ec125fbbSEdward Tomasz Napierala } 976ec125fbbSEdward Tomasz Napierala } 977ec125fbbSEdward Tomasz Napierala 978ec125fbbSEdward Tomasz Napierala static void 979ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 980ec125fbbSEdward Tomasz Napierala { 981ec125fbbSEdward Tomasz Napierala 9824b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9834b5c9cf6SEdward Tomasz Napierala 984ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 985ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 986ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 987a7ad07bfSEdward Tomasz Napierala break; 988ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 989a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 990a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 991ec125fbbSEdward Tomasz Napierala break; 992ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 993ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 994ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 995ec125fbbSEdward Tomasz Napierala break; 996ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 997415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 998415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 999ec125fbbSEdward Tomasz Napierala break; 1000ec125fbbSEdward Tomasz Napierala default: 1001ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 1002ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1003ec125fbbSEdward Tomasz Napierala } 1004ec125fbbSEdward Tomasz Napierala } 1005ec125fbbSEdward Tomasz Napierala 1006ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1007ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 1008ec125fbbSEdward Tomasz Napierala { 1009ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1010ec125fbbSEdward Tomasz Napierala 10114b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10124b5c9cf6SEdward Tomasz Napierala 1013ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 1014ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1015ec125fbbSEdward Tomasz Napierala return (NULL); 1016ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1017ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1018ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1019415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1020a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1021ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1022ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1023ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1024ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1025ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 1026ec125fbbSEdward Tomasz Napierala 1027ec125fbbSEdward Tomasz Napierala return (rule); 1028ec125fbbSEdward Tomasz Napierala } 1029ec125fbbSEdward Tomasz Napierala 1030ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1031ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 1032ec125fbbSEdward Tomasz Napierala { 1033ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 1034ec125fbbSEdward Tomasz Napierala 10354b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10364b5c9cf6SEdward Tomasz Napierala 1037ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 1038ec125fbbSEdward Tomasz Napierala if (copy == NULL) 1039ec125fbbSEdward Tomasz Napierala return (NULL); 1040ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 1041ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 1042ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 1043415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 1044a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 1045ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 1046ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 1047ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 1048ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 1049ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 1050ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 1051ec125fbbSEdward Tomasz Napierala 1052ec125fbbSEdward Tomasz Napierala return (copy); 1053ec125fbbSEdward Tomasz Napierala } 1054ec125fbbSEdward Tomasz Napierala 1055ec125fbbSEdward Tomasz Napierala void 1056ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 1057ec125fbbSEdward Tomasz Napierala { 1058ec125fbbSEdward Tomasz Napierala 10594b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1060ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1061ec125fbbSEdward Tomasz Napierala 1062ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 1063ec125fbbSEdward Tomasz Napierala } 1064ec125fbbSEdward Tomasz Napierala 1065ec125fbbSEdward Tomasz Napierala static void 1066ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 1067ec125fbbSEdward Tomasz Napierala { 1068ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1069ec125fbbSEdward Tomasz Napierala 1070ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 1071ec125fbbSEdward Tomasz Napierala 10724b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1073ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 1074ec125fbbSEdward Tomasz Napierala 1075ec125fbbSEdward Tomasz Napierala /* 1076ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 1077ec125fbbSEdward Tomasz Napierala */ 1078ec125fbbSEdward Tomasz Napierala 1079ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 1080ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 1081ec125fbbSEdward Tomasz Napierala } 1082ec125fbbSEdward Tomasz Napierala 1083ec125fbbSEdward Tomasz Napierala void 1084ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 1085ec125fbbSEdward Tomasz Napierala { 1086ec125fbbSEdward Tomasz Napierala 10874b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1088ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1089ec125fbbSEdward Tomasz Napierala 1090ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 1091ec125fbbSEdward Tomasz Napierala /* 1092ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 1093ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 1094ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 1095ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 1096ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 1097ec125fbbSEdward Tomasz Napierala */ 1098ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 1099ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 1100ec125fbbSEdward Tomasz Napierala } 1101ec125fbbSEdward Tomasz Napierala } 1102ec125fbbSEdward Tomasz Napierala 1103ec125fbbSEdward Tomasz Napierala static int 1104ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 1105ec125fbbSEdward Tomasz Napierala { 1106ec125fbbSEdward Tomasz Napierala 11074b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11084b5c9cf6SEdward Tomasz Napierala 1109ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1110ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1111ec125fbbSEdward Tomasz Napierala return (0); 1112ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1113ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1114ec125fbbSEdward Tomasz Napierala return (0); 1115ec125fbbSEdward Tomasz Napierala break; 1116ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1117ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1118ec125fbbSEdward Tomasz Napierala return (0); 1119ec125fbbSEdward Tomasz Napierala break; 1120ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1121415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1122ec125fbbSEdward Tomasz Napierala return (0); 1123ec125fbbSEdward Tomasz Napierala break; 1124ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1125a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1126ec125fbbSEdward Tomasz Napierala return (0); 1127ec125fbbSEdward Tomasz Napierala break; 1128ec125fbbSEdward Tomasz Napierala default: 1129ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 1130ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1131ec125fbbSEdward Tomasz Napierala } 1132ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 1133ec125fbbSEdward Tomasz Napierala return (0); 1134ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 1135ec125fbbSEdward Tomasz Napierala return (0); 1136ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 1137ec125fbbSEdward Tomasz Napierala return (0); 1138ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 1139ec125fbbSEdward Tomasz Napierala return (0); 1140ec125fbbSEdward Tomasz Napierala 1141ec125fbbSEdward Tomasz Napierala return (1); 1142ec125fbbSEdward Tomasz Napierala } 1143ec125fbbSEdward Tomasz Napierala 1144ec125fbbSEdward Tomasz Napierala static int 1145ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 1146ec125fbbSEdward Tomasz Napierala { 1147c1a43e73SEdward Tomasz Napierala struct rctl_rule *rule; 1148ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 1149ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 1150ec125fbbSEdward Tomasz Napierala id_t id; 1151c1a43e73SEdward Tomasz Napierala int error = 0; 1152ec125fbbSEdward Tomasz Napierala 11534b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11544b5c9cf6SEdward Tomasz Napierala 1155ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 1156ec125fbbSEdward Tomasz Napierala 1157ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 1158ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 1159ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 1160ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 1161ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 1162ec125fbbSEdward Tomasz Napierala perstr = rulestr; 1163ec125fbbSEdward Tomasz Napierala 1164ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 1165ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1166ec125fbbSEdward Tomasz Napierala else { 1167ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 1168ec125fbbSEdward Tomasz Napierala if (error != 0) 1169ec125fbbSEdward Tomasz Napierala goto out; 1170ec125fbbSEdward Tomasz Napierala } 1171ec125fbbSEdward Tomasz Napierala 1172ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 1173ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1174ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1175415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1176a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1177ec125fbbSEdward Tomasz Napierala } else { 1178ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1179ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1180ec125fbbSEdward Tomasz Napierala error = EINVAL; 1181ec125fbbSEdward Tomasz Napierala goto out; 1182ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1183ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1184ec125fbbSEdward Tomasz Napierala if (error != 0) 1185ec125fbbSEdward Tomasz Napierala goto out; 1186ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1187ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 1188ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 1189ec125fbbSEdward Tomasz Napierala error = ESRCH; 1190ec125fbbSEdward Tomasz Napierala goto out; 1191ec125fbbSEdward Tomasz Napierala } 1192ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 1193ec125fbbSEdward Tomasz Napierala break; 1194ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1195ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1196ec125fbbSEdward Tomasz Napierala if (error != 0) 1197ec125fbbSEdward Tomasz Napierala goto out; 1198ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 1199ec125fbbSEdward Tomasz Napierala break; 1200ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1201415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 1202ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 1203415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 1204ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 1205ec125fbbSEdward Tomasz Napierala goto out; 1206ec125fbbSEdward Tomasz Napierala } 1207ec125fbbSEdward Tomasz Napierala break; 1208ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1209a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 1210a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 1211a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 1212a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 1213ec125fbbSEdward Tomasz Napierala goto out; 1214ec125fbbSEdward Tomasz Napierala } 1215ec125fbbSEdward Tomasz Napierala break; 1216ec125fbbSEdward Tomasz Napierala default: 1217ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 1218ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1219ec125fbbSEdward Tomasz Napierala } 1220ec125fbbSEdward Tomasz Napierala } 1221ec125fbbSEdward Tomasz Napierala 1222ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1223ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1224ec125fbbSEdward Tomasz Napierala else { 1225ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1226ec125fbbSEdward Tomasz Napierala resourcenames); 1227ec125fbbSEdward Tomasz Napierala if (error != 0) 1228ec125fbbSEdward Tomasz Napierala goto out; 1229ec125fbbSEdward Tomasz Napierala } 1230ec125fbbSEdward Tomasz Napierala 1231ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1232ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1233ec125fbbSEdward Tomasz Napierala else { 1234ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1235ec125fbbSEdward Tomasz Napierala if (error != 0) 1236ec125fbbSEdward Tomasz Napierala goto out; 1237ec125fbbSEdward Tomasz Napierala } 1238ec125fbbSEdward Tomasz Napierala 1239ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1240ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1241ec125fbbSEdward Tomasz Napierala else { 1242ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1243ec125fbbSEdward Tomasz Napierala if (error != 0) 1244ec125fbbSEdward Tomasz Napierala goto out; 1245b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1246b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1247b450d447SEdward Tomasz Napierala error = ERANGE; 1248b450d447SEdward Tomasz Napierala goto out; 1249b450d447SEdward Tomasz Napierala } 1250cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1251ec125fbbSEdward Tomasz Napierala } 1252b450d447SEdward Tomasz Napierala } 1253ec125fbbSEdward Tomasz Napierala 1254ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1255ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1256ec125fbbSEdward Tomasz Napierala else { 1257ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1258ec125fbbSEdward Tomasz Napierala if (error != 0) 1259ec125fbbSEdward Tomasz Napierala goto out; 1260ec125fbbSEdward Tomasz Napierala } 1261ec125fbbSEdward Tomasz Napierala 1262ec125fbbSEdward Tomasz Napierala out: 1263ec125fbbSEdward Tomasz Napierala if (error == 0) 1264ec125fbbSEdward Tomasz Napierala *rulep = rule; 1265ec125fbbSEdward Tomasz Napierala else 1266ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1267ec125fbbSEdward Tomasz Napierala 1268ec125fbbSEdward Tomasz Napierala return (error); 1269ec125fbbSEdward Tomasz Napierala } 1270ec125fbbSEdward Tomasz Napierala 1271ec125fbbSEdward Tomasz Napierala /* 1272ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1273ec125fbbSEdward Tomasz Napierala */ 1274ec125fbbSEdward Tomasz Napierala int 1275ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1276ec125fbbSEdward Tomasz Napierala { 1277ec125fbbSEdward Tomasz Napierala struct proc *p; 1278ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1279ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1280ec125fbbSEdward Tomasz Napierala struct prison *pr; 1281a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1282ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1283ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1284ec125fbbSEdward Tomasz Napierala int match; 1285ec125fbbSEdward Tomasz Napierala 12864b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1287ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1288ec125fbbSEdward Tomasz Napierala 1289ec125fbbSEdward Tomasz Napierala /* 1290ae34b6ffSEdward Tomasz Napierala * Some rules just don't make sense, like "deny" rule for an undeniable 1291ae34b6ffSEdward Tomasz Napierala * resource. The exception are the RSS and %CPU resources - they are 1292ae34b6ffSEdward Tomasz Napierala * not deniable in the racct sense, but the limit is enforced in 1293ae34b6ffSEdward Tomasz Napierala * a different way. 1294ec125fbbSEdward Tomasz Napierala */ 1295ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1296ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DENIABLE(rule->rr_resource) && 1297ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_RSS && 1298ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_PCTCPU) { 1299ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1300ae34b6ffSEdward Tomasz Napierala } 1301ae34b6ffSEdward Tomasz Napierala 1302ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1303ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DECAYING(rule->rr_resource)) { 1304ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1305ae34b6ffSEdward Tomasz Napierala } 1306ae34b6ffSEdward Tomasz Napierala 1307ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1308ae34b6ffSEdward Tomasz Napierala rule->rr_resource == RACCT_PCTCPU) { 1309ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1310ae34b6ffSEdward Tomasz Napierala } 1311ec125fbbSEdward Tomasz Napierala 1312ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 1313ae34b6ffSEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) { 1314ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1315ae34b6ffSEdward Tomasz Napierala } 1316ec125fbbSEdward Tomasz Napierala 1317ec125fbbSEdward Tomasz Napierala /* 1318ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1319ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1320ec125fbbSEdward Tomasz Napierala */ 1321ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1322ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1323ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1324ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1325ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1326ec125fbbSEdward Tomasz Napierala } else 1327ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1328ec125fbbSEdward Tomasz Napierala 1329ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1330ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1331ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1332ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1333ec125fbbSEdward Tomasz Napierala 1334ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1335ec125fbbSEdward Tomasz Napierala /* 1336ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1337ec125fbbSEdward Tomasz Napierala * to do. 1338ec125fbbSEdward Tomasz Napierala */ 1339ec125fbbSEdward Tomasz Napierala return (0); 1340ec125fbbSEdward Tomasz Napierala 1341ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1342ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1343ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1344ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1345ec125fbbSEdward Tomasz Napierala break; 1346ec125fbbSEdward Tomasz Napierala 1347ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1348415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1349ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1350ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1351ec125fbbSEdward Tomasz Napierala break; 1352ec125fbbSEdward Tomasz Napierala 1353ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1354a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1355a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1356a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1357ec125fbbSEdward Tomasz Napierala break; 1358ec125fbbSEdward Tomasz Napierala 1359ec125fbbSEdward Tomasz Napierala default: 1360ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1361ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1362ec125fbbSEdward Tomasz Napierala } 1363ec125fbbSEdward Tomasz Napierala 1364ec125fbbSEdward Tomasz Napierala /* 1365ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1366ec125fbbSEdward Tomasz Napierala * it applies to. 1367ec125fbbSEdward Tomasz Napierala */ 1368ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1369ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1370ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1371ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1372ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1373ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1374ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1375ec125fbbSEdward Tomasz Napierala break; 1376ec125fbbSEdward Tomasz Napierala continue; 1377ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1378415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1379ec125fbbSEdward Tomasz Napierala break; 1380ec125fbbSEdward Tomasz Napierala continue; 1381ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1382ec125fbbSEdward Tomasz Napierala match = 0; 1383ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1384a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1385ec125fbbSEdward Tomasz Napierala match = 1; 1386ec125fbbSEdward Tomasz Napierala break; 1387ec125fbbSEdward Tomasz Napierala } 1388ec125fbbSEdward Tomasz Napierala } 1389ec125fbbSEdward Tomasz Napierala if (match) 1390ec125fbbSEdward Tomasz Napierala break; 1391ec125fbbSEdward Tomasz Napierala continue; 1392ec125fbbSEdward Tomasz Napierala default: 1393ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1394ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1395ec125fbbSEdward Tomasz Napierala } 1396ec125fbbSEdward Tomasz Napierala 1397ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1398ec125fbbSEdward Tomasz Napierala } 1399ec125fbbSEdward Tomasz Napierala 1400ec125fbbSEdward Tomasz Napierala return (0); 1401ec125fbbSEdward Tomasz Napierala } 1402ec125fbbSEdward Tomasz Napierala 1403ec125fbbSEdward Tomasz Napierala static void 140415db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 140515db3c07SEdward Tomasz Napierala { 140615db3c07SEdward Tomasz Napierala 1407bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 140815db3c07SEdward Tomasz Napierala } 140915db3c07SEdward Tomasz Napierala 141015db3c07SEdward Tomasz Napierala static void 141115db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 141215db3c07SEdward Tomasz Napierala { 141315db3c07SEdward Tomasz Napierala 1414bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 141515db3c07SEdward Tomasz Napierala } 141615db3c07SEdward Tomasz Napierala 141715db3c07SEdward Tomasz Napierala static void 1418ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1419ec125fbbSEdward Tomasz Napierala { 1420ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1421ec125fbbSEdward Tomasz Napierala int found = 0; 1422ec125fbbSEdward Tomasz Napierala 14234b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1424bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 14254b5c9cf6SEdward Tomasz Napierala 1426ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1427ec125fbbSEdward Tomasz Napierala 1428ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1429ec125fbbSEdward Tomasz Napierala } 1430ec125fbbSEdward Tomasz Napierala 1431ec125fbbSEdward Tomasz Napierala /* 1432ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1433ec125fbbSEdward Tomasz Napierala */ 1434ec125fbbSEdward Tomasz Napierala int 1435ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1436ec125fbbSEdward Tomasz Napierala { 1437ec125fbbSEdward Tomasz Napierala struct proc *p; 1438c1a43e73SEdward Tomasz Napierala int found = 0; 1439ec125fbbSEdward Tomasz Napierala 14404b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14414b5c9cf6SEdward Tomasz Napierala 1442ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1443ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1444ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1445bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1446ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1447bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1448ec125fbbSEdward Tomasz Napierala if (found) 1449ec125fbbSEdward Tomasz Napierala return (0); 1450ec125fbbSEdward Tomasz Napierala return (ESRCH); 1451ec125fbbSEdward Tomasz Napierala } 1452ec125fbbSEdward Tomasz Napierala 145315db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, 145415db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 145515db3c07SEdward Tomasz Napierala filter, (void *)&found); 145615db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, 145715db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 145815db3c07SEdward Tomasz Napierala filter, (void *)&found); 145915db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 146015db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 146115db3c07SEdward Tomasz Napierala filter, (void *)&found); 1462ec125fbbSEdward Tomasz Napierala 1463ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1464bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1465ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1466ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1467ec125fbbSEdward Tomasz Napierala } 1468bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1469ec125fbbSEdward Tomasz Napierala 1470ec125fbbSEdward Tomasz Napierala if (found) 1471ec125fbbSEdward Tomasz Napierala return (0); 1472ec125fbbSEdward Tomasz Napierala return (ESRCH); 1473ec125fbbSEdward Tomasz Napierala } 1474ec125fbbSEdward Tomasz Napierala 1475ec125fbbSEdward Tomasz Napierala /* 1476ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1477ec125fbbSEdward Tomasz Napierala */ 1478ec125fbbSEdward Tomasz Napierala static void 1479ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1480ec125fbbSEdward Tomasz Napierala { 1481ec125fbbSEdward Tomasz Napierala int64_t amount; 1482ec125fbbSEdward Tomasz Napierala 14834b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14844b5c9cf6SEdward Tomasz Napierala 1485ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1486ec125fbbSEdward Tomasz Napierala 1487ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1488ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1489ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1490ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1491ec125fbbSEdward Tomasz Napierala else 1492ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1493ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1494ec125fbbSEdward Tomasz Napierala break; 1495ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1496ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1497ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1498ec125fbbSEdward Tomasz Napierala else 1499ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1500ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1501ec125fbbSEdward Tomasz Napierala break; 1502ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1503415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1504ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1505ec125fbbSEdward Tomasz Napierala else 1506ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1507415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1508ec125fbbSEdward Tomasz Napierala break; 1509ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1510a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1511ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1512ec125fbbSEdward Tomasz Napierala else 1513ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1514a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1515ec125fbbSEdward Tomasz Napierala break; 1516ec125fbbSEdward Tomasz Napierala default: 1517ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1518ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1519ec125fbbSEdward Tomasz Napierala } 1520ec125fbbSEdward Tomasz Napierala 1521ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1522ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 152385a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 152485a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1525ec125fbbSEdward Tomasz Napierala 1526ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1527ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1528ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1529ec125fbbSEdward Tomasz Napierala amount); 1530ec125fbbSEdward Tomasz Napierala 1531ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1532ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1533ec125fbbSEdward Tomasz Napierala } 1534ec125fbbSEdward Tomasz Napierala 1535ec125fbbSEdward Tomasz Napierala /* 1536ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1537ec125fbbSEdward Tomasz Napierala */ 1538ec125fbbSEdward Tomasz Napierala static int 1539ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1540ec125fbbSEdward Tomasz Napierala { 1541ec125fbbSEdward Tomasz Napierala char *str; 1542c1a43e73SEdward Tomasz Napierala int error; 1543ec125fbbSEdward Tomasz Napierala 15444b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15454b5c9cf6SEdward Tomasz Napierala 1546ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1547ec125fbbSEdward Tomasz Napierala return (EINVAL); 1548ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1549786813aaSEdward Tomasz Napierala return (E2BIG); 1550ec125fbbSEdward Tomasz Napierala 1551ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1552ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1553ec125fbbSEdward Tomasz Napierala if (error != 0) { 1554ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1555ec125fbbSEdward Tomasz Napierala return (error); 1556ec125fbbSEdward Tomasz Napierala } 1557ec125fbbSEdward Tomasz Napierala 1558ec125fbbSEdward Tomasz Napierala *inputstr = str; 1559ec125fbbSEdward Tomasz Napierala 1560ec125fbbSEdward Tomasz Napierala return (0); 1561ec125fbbSEdward Tomasz Napierala } 1562ec125fbbSEdward Tomasz Napierala 1563ec125fbbSEdward Tomasz Napierala /* 1564ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1565ec125fbbSEdward Tomasz Napierala */ 1566ec125fbbSEdward Tomasz Napierala static int 1567ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1568ec125fbbSEdward Tomasz Napierala { 1569ec125fbbSEdward Tomasz Napierala int error; 1570ec125fbbSEdward Tomasz Napierala 15714b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15724b5c9cf6SEdward Tomasz Napierala 1573ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1574ec125fbbSEdward Tomasz Napierala return (0); 1575ec125fbbSEdward Tomasz Napierala 1576ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1577ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1578ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1579ec125fbbSEdward Tomasz Napierala return (ERANGE); 1580ec125fbbSEdward Tomasz Napierala } 1581ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1582ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1583ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1584ec125fbbSEdward Tomasz Napierala return (error); 1585ec125fbbSEdward Tomasz Napierala } 1586ec125fbbSEdward Tomasz Napierala 1587ec125fbbSEdward Tomasz Napierala static struct sbuf * 1588ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1589ec125fbbSEdward Tomasz Napierala { 1590ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1591c1a43e73SEdward Tomasz Napierala int64_t amount; 1592c1a43e73SEdward Tomasz Napierala int i; 1593ec125fbbSEdward Tomasz Napierala 15944b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15954b5c9cf6SEdward Tomasz Napierala 1596ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1597ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 15984fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1599ec125fbbSEdward Tomasz Napierala continue; 1600bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1601ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 1602bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 160385a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1604cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1605ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1606ec125fbbSEdward Tomasz Napierala } 1607ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1608ec125fbbSEdward Tomasz Napierala return (sb); 1609ec125fbbSEdward Tomasz Napierala } 1610ec125fbbSEdward Tomasz Napierala 1611ec125fbbSEdward Tomasz Napierala int 16128451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1613ec125fbbSEdward Tomasz Napierala { 1614ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1615ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1616ec125fbbSEdward Tomasz Napierala struct proc *p; 1617ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1618ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1619a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1620c1a43e73SEdward Tomasz Napierala char *inputstr; 1621c1a43e73SEdward Tomasz Napierala int error; 1622ec125fbbSEdward Tomasz Napierala 16234b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16244b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16254b5c9cf6SEdward Tomasz Napierala 1626415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1627ec125fbbSEdward Tomasz Napierala if (error != 0) 1628ec125fbbSEdward Tomasz Napierala return (error); 1629ec125fbbSEdward Tomasz Napierala 1630ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1631ec125fbbSEdward Tomasz Napierala if (error != 0) 1632ec125fbbSEdward Tomasz Napierala return (error); 1633ec125fbbSEdward Tomasz Napierala 1634ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1635ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1636ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1637ec125fbbSEdward Tomasz Napierala if (error != 0) { 1638ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1639ec125fbbSEdward Tomasz Napierala return (error); 1640ec125fbbSEdward Tomasz Napierala } 1641ec125fbbSEdward Tomasz Napierala 1642ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1643ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1644ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1645ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1646ec125fbbSEdward Tomasz Napierala error = EINVAL; 1647ec125fbbSEdward Tomasz Napierala goto out; 1648ec125fbbSEdward Tomasz Napierala } 1649ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1650ec125fbbSEdward Tomasz Napierala break; 1651ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1652ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1653ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1654ec125fbbSEdward Tomasz Napierala error = EINVAL; 1655ec125fbbSEdward Tomasz Napierala goto out; 1656ec125fbbSEdward Tomasz Napierala } 1657ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1658ec125fbbSEdward Tomasz Napierala break; 1659ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1660415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1661ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1662ec125fbbSEdward Tomasz Napierala error = EINVAL; 1663ec125fbbSEdward Tomasz Napierala goto out; 1664ec125fbbSEdward Tomasz Napierala } 1665ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1666ec125fbbSEdward Tomasz Napierala break; 1667ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1668a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1669a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1670ec125fbbSEdward Tomasz Napierala error = EINVAL; 1671ec125fbbSEdward Tomasz Napierala goto out; 1672ec125fbbSEdward Tomasz Napierala } 1673a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1674ec125fbbSEdward Tomasz Napierala break; 1675ec125fbbSEdward Tomasz Napierala default: 1676ec125fbbSEdward Tomasz Napierala error = EINVAL; 1677ec125fbbSEdward Tomasz Napierala } 1678ec125fbbSEdward Tomasz Napierala out: 1679ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1680ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1681ec125fbbSEdward Tomasz Napierala if (error != 0) 1682ec125fbbSEdward Tomasz Napierala return (error); 1683ec125fbbSEdward Tomasz Napierala 1684ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1685ec125fbbSEdward Tomasz Napierala 1686ec125fbbSEdward Tomasz Napierala return (error); 1687ec125fbbSEdward Tomasz Napierala } 1688ec125fbbSEdward Tomasz Napierala 1689ec125fbbSEdward Tomasz Napierala static void 1690ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1691ec125fbbSEdward Tomasz Napierala { 1692ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1693ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1694ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1695ec125fbbSEdward Tomasz Napierala 16964b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1697bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 16984b5c9cf6SEdward Tomasz Napierala 1699ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1700ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1701ec125fbbSEdward Tomasz Napierala continue; 1702ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1703ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1704ec125fbbSEdward Tomasz Napierala } 1705ec125fbbSEdward Tomasz Napierala } 1706ec125fbbSEdward Tomasz Napierala 1707ec125fbbSEdward Tomasz Napierala int 17088451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1709ec125fbbSEdward Tomasz Napierala { 1710ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1711ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1712ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1713ec125fbbSEdward Tomasz Napierala struct proc *p; 1714c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1715c1a43e73SEdward Tomasz Napierala size_t bufsize; 1716c1a43e73SEdward Tomasz Napierala int error; 1717ec125fbbSEdward Tomasz Napierala 17184b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17194b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17204b5c9cf6SEdward Tomasz Napierala 1721ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1722ec125fbbSEdward Tomasz Napierala if (error != 0) 1723ec125fbbSEdward Tomasz Napierala return (error); 1724ec125fbbSEdward Tomasz Napierala 1725ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1726ec125fbbSEdward Tomasz Napierala if (error != 0) 1727ec125fbbSEdward Tomasz Napierala return (error); 1728ec125fbbSEdward Tomasz Napierala 1729ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1730ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1731ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1732ec125fbbSEdward Tomasz Napierala if (error != 0) { 1733ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1734ec125fbbSEdward Tomasz Napierala return (error); 1735ec125fbbSEdward Tomasz Napierala } 1736ec125fbbSEdward Tomasz Napierala 17372b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 17382b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 17392b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 17402b4035eeSEdward Tomasz Napierala return (E2BIG); 17412b4035eeSEdward Tomasz Napierala } 17422b4035eeSEdward Tomasz Napierala 1743ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1744ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1745ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1746ec125fbbSEdward Tomasz Napierala 1747ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1748bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1749ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1750ec125fbbSEdward Tomasz Napierala /* 1751ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1752ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1753ec125fbbSEdward Tomasz Napierala */ 1754ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1755ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1756ec125fbbSEdward Tomasz Napierala continue; 1757ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1758ec125fbbSEdward Tomasz Napierala continue; 1759ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1760ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1761ec125fbbSEdward Tomasz Napierala } 1762bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1763ec125fbbSEdward Tomasz Napierala } 1764ec125fbbSEdward Tomasz Napierala 176515db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, 176615db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 176715db3c07SEdward Tomasz Napierala filter, sb); 176815db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, 176915db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 177015db3c07SEdward Tomasz Napierala filter, sb); 177115db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 177215db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 177315db3c07SEdward Tomasz Napierala filter, sb); 1774ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 17752b4035eeSEdward Tomasz Napierala error = ERANGE; 17762b4035eeSEdward Tomasz Napierala goto out; 1777ec125fbbSEdward Tomasz Napierala } 1778ec125fbbSEdward Tomasz Napierala 1779ec125fbbSEdward Tomasz Napierala /* 1780ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1781ec125fbbSEdward Tomasz Napierala */ 1782ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1783ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1784ec125fbbSEdward Tomasz Napierala 1785ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 17862b4035eeSEdward Tomasz Napierala out: 1787ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1788ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1789ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1790ec125fbbSEdward Tomasz Napierala return (error); 1791ec125fbbSEdward Tomasz Napierala } 1792ec125fbbSEdward Tomasz Napierala 1793ec125fbbSEdward Tomasz Napierala int 17948451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1795ec125fbbSEdward Tomasz Napierala { 1796ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1797ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1798ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1799c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1800c1a43e73SEdward Tomasz Napierala size_t bufsize; 1801c1a43e73SEdward Tomasz Napierala int error; 1802ec125fbbSEdward Tomasz Napierala 18034b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18044b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18054b5c9cf6SEdward Tomasz Napierala 1806ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1807ec125fbbSEdward Tomasz Napierala if (error != 0) 1808ec125fbbSEdward Tomasz Napierala return (error); 1809ec125fbbSEdward Tomasz Napierala 1810ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1811ec125fbbSEdward Tomasz Napierala if (error != 0) 1812ec125fbbSEdward Tomasz Napierala return (error); 1813ec125fbbSEdward Tomasz Napierala 1814ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1815ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1816ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1817ec125fbbSEdward Tomasz Napierala if (error != 0) { 1818ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1819ec125fbbSEdward Tomasz Napierala return (error); 1820ec125fbbSEdward Tomasz Napierala } 1821ec125fbbSEdward Tomasz Napierala 1822ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1823ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1824ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1825ec125fbbSEdward Tomasz Napierala return (EINVAL); 1826ec125fbbSEdward Tomasz Napierala } 1827ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1828ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1829ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1830ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1831ec125fbbSEdward Tomasz Napierala } 1832ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1833ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1834ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1835ec125fbbSEdward Tomasz Napierala return (EINVAL); 1836ec125fbbSEdward Tomasz Napierala } 1837ec125fbbSEdward Tomasz Napierala 18382b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 18392b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 18402b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 18412b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 18422b4035eeSEdward Tomasz Napierala return (E2BIG); 18432b4035eeSEdward Tomasz Napierala } 18442b4035eeSEdward Tomasz Napierala 1845ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1846ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1847ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1848ec125fbbSEdward Tomasz Napierala 1849bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1850ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1851ec125fbbSEdward Tomasz Napierala rrl_next) { 1852ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1853ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1854ec125fbbSEdward Tomasz Napierala } 1855bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1856ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 18572b4035eeSEdward Tomasz Napierala error = ERANGE; 1858b483e111SConrad Meyer sbuf_delete(sb); 18592b4035eeSEdward Tomasz Napierala goto out; 1860ec125fbbSEdward Tomasz Napierala } 1861ec125fbbSEdward Tomasz Napierala 1862ec125fbbSEdward Tomasz Napierala /* 1863ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1864ec125fbbSEdward Tomasz Napierala */ 1865ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1866ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1867ec125fbbSEdward Tomasz Napierala 1868ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 18692b4035eeSEdward Tomasz Napierala out: 1870ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1871ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1872ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1873ec125fbbSEdward Tomasz Napierala return (error); 1874ec125fbbSEdward Tomasz Napierala } 1875ec125fbbSEdward Tomasz Napierala 1876ec125fbbSEdward Tomasz Napierala int 18778451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1878ec125fbbSEdward Tomasz Napierala { 1879ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1880ec125fbbSEdward Tomasz Napierala char *inputstr; 1881c1a43e73SEdward Tomasz Napierala int error; 1882ec125fbbSEdward Tomasz Napierala 18834b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18844b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18854b5c9cf6SEdward Tomasz Napierala 1886ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1887ec125fbbSEdward Tomasz Napierala if (error != 0) 1888ec125fbbSEdward Tomasz Napierala return (error); 1889ec125fbbSEdward Tomasz Napierala 1890ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1891ec125fbbSEdward Tomasz Napierala if (error != 0) 1892ec125fbbSEdward Tomasz Napierala return (error); 1893ec125fbbSEdward Tomasz Napierala 1894ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1895ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1896ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1897ec125fbbSEdward Tomasz Napierala if (error != 0) { 1898ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1899ec125fbbSEdward Tomasz Napierala return (error); 1900ec125fbbSEdward Tomasz Napierala } 1901ec125fbbSEdward Tomasz Napierala /* 1902ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1903ec125fbbSEdward Tomasz Napierala */ 1904ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1905ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1906ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1907ec125fbbSEdward Tomasz Napierala 1908ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1909ec125fbbSEdward Tomasz Napierala error = EINVAL; 1910ec125fbbSEdward Tomasz Napierala goto out; 1911ec125fbbSEdward Tomasz Napierala } 1912ec125fbbSEdward Tomasz Napierala 1913ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1914ec125fbbSEdward Tomasz Napierala 1915ec125fbbSEdward Tomasz Napierala out: 1916ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1917ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1918ec125fbbSEdward Tomasz Napierala return (error); 1919ec125fbbSEdward Tomasz Napierala } 1920ec125fbbSEdward Tomasz Napierala 1921ec125fbbSEdward Tomasz Napierala int 19228451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1923ec125fbbSEdward Tomasz Napierala { 1924ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1925ec125fbbSEdward Tomasz Napierala char *inputstr; 1926c1a43e73SEdward Tomasz Napierala int error; 1927ec125fbbSEdward Tomasz Napierala 19284b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19294b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 19304b5c9cf6SEdward Tomasz Napierala 1931ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1932ec125fbbSEdward Tomasz Napierala if (error != 0) 1933ec125fbbSEdward Tomasz Napierala return (error); 1934ec125fbbSEdward Tomasz Napierala 1935ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1936ec125fbbSEdward Tomasz Napierala if (error != 0) 1937ec125fbbSEdward Tomasz Napierala return (error); 1938ec125fbbSEdward Tomasz Napierala 1939ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1940ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1941ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1942ec125fbbSEdward Tomasz Napierala if (error != 0) { 1943ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1944ec125fbbSEdward Tomasz Napierala return (error); 1945ec125fbbSEdward Tomasz Napierala } 1946ec125fbbSEdward Tomasz Napierala 1947ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1948ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1949ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1950ec125fbbSEdward Tomasz Napierala 1951ec125fbbSEdward Tomasz Napierala return (error); 1952ec125fbbSEdward Tomasz Napierala } 1953ec125fbbSEdward Tomasz Napierala 1954ec125fbbSEdward Tomasz Napierala /* 1955ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1956ec125fbbSEdward Tomasz Napierala */ 1957ec125fbbSEdward Tomasz Napierala void 1958ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1959ec125fbbSEdward Tomasz Napierala { 1960c1a43e73SEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1961ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1962ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1963ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1964a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1965c1a43e73SEdward Tomasz Napierala int rulecnt, i; 1966ec125fbbSEdward Tomasz Napierala 1967f87beb93SAndriy Gapon if (!racct_enable) 1968f87beb93SAndriy Gapon return; 1969f87beb93SAndriy Gapon 1970f87beb93SAndriy Gapon PROC_LOCK_ASSERT(p, MA_NOTOWNED); 19714b5c9cf6SEdward Tomasz Napierala 1972ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1973ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1974a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1975ec125fbbSEdward Tomasz Napierala 1976ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1977ec125fbbSEdward Tomasz Napierala 1978ec125fbbSEdward Tomasz Napierala again: 1979ec125fbbSEdward Tomasz Napierala /* 1980ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1981ec125fbbSEdward Tomasz Napierala * credentials. 1982ec125fbbSEdward Tomasz Napierala */ 1983ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1984bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1985ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1986ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1987ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1988ec125fbbSEdward Tomasz Napierala rulecnt++; 1989ec125fbbSEdward Tomasz Napierala } 1990ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1991ec125fbbSEdward Tomasz Napierala rulecnt++; 1992ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1993ec125fbbSEdward Tomasz Napierala rulecnt++; 1994a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1995ec125fbbSEdward Tomasz Napierala rulecnt++; 1996bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1997ec125fbbSEdward Tomasz Napierala 1998ec125fbbSEdward Tomasz Napierala /* 1999ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 2000ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 2001ec125fbbSEdward Tomasz Napierala */ 2002ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 2003ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 2004ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 2005ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 2006ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 2007ec125fbbSEdward Tomasz Napierala } 2008ec125fbbSEdward Tomasz Napierala 2009ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2010ec125fbbSEdward Tomasz Napierala 2011ec125fbbSEdward Tomasz Napierala /* 2012ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 2013ec125fbbSEdward Tomasz Napierala */ 2014bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2015ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 2016ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2017ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2018ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2019ec125fbbSEdward Tomasz Napierala goto goaround; 2020ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2021ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2022ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2023ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2024ec125fbbSEdward Tomasz Napierala rulecnt--; 2025ec125fbbSEdward Tomasz Napierala } 2026ec125fbbSEdward Tomasz Napierala } 2027ec125fbbSEdward Tomasz Napierala 2028ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 2029ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2030ec125fbbSEdward Tomasz Napierala goto goaround; 2031ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2032ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2033ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2034ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2035ec125fbbSEdward Tomasz Napierala rulecnt--; 2036ec125fbbSEdward Tomasz Napierala } 2037ec125fbbSEdward Tomasz Napierala 2038ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 2039ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2040ec125fbbSEdward Tomasz Napierala goto goaround; 2041ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2042ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2043ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2044ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2045ec125fbbSEdward Tomasz Napierala rulecnt--; 2046ec125fbbSEdward Tomasz Napierala } 2047ec125fbbSEdward Tomasz Napierala 2048a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 2049ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2050ec125fbbSEdward Tomasz Napierala goto goaround; 2051ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2052ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2053ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2054ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2055ec125fbbSEdward Tomasz Napierala rulecnt--; 2056ec125fbbSEdward Tomasz Napierala } 2057ec125fbbSEdward Tomasz Napierala 2058ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 2059ec125fbbSEdward Tomasz Napierala /* 2060ec125fbbSEdward Tomasz Napierala * Free the old rule list. 2061ec125fbbSEdward Tomasz Napierala */ 2062ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 2063ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 2064ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2065ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2066ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2067ec125fbbSEdward Tomasz Napierala } 2068ec125fbbSEdward Tomasz Napierala 2069ec125fbbSEdward Tomasz Napierala /* 2070ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 2071ec125fbbSEdward Tomasz Napierala * 2072ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 2073ec125fbbSEdward Tomasz Napierala * of iterating here? 2074ec125fbbSEdward Tomasz Napierala */ 2075ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2076ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2077ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2078ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 2079ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 2080ec125fbbSEdward Tomasz Napierala } 2081ec125fbbSEdward Tomasz Napierala 2082bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2083ec125fbbSEdward Tomasz Napierala 2084ec125fbbSEdward Tomasz Napierala return; 2085ec125fbbSEdward Tomasz Napierala } 2086ec125fbbSEdward Tomasz Napierala 2087ec125fbbSEdward Tomasz Napierala goaround: 2088bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2089ec125fbbSEdward Tomasz Napierala 2090ec125fbbSEdward Tomasz Napierala /* 2091ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 2092ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 2093ec125fbbSEdward Tomasz Napierala */ 2094ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2095ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2096ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2097ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 2098ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 2099ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 2100ec125fbbSEdward Tomasz Napierala } 2101ec125fbbSEdward Tomasz Napierala 2102ec125fbbSEdward Tomasz Napierala goto again; 2103ec125fbbSEdward Tomasz Napierala } 2104ec125fbbSEdward Tomasz Napierala 2105ec125fbbSEdward Tomasz Napierala /* 2106ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 2107ec125fbbSEdward Tomasz Napierala */ 2108ec125fbbSEdward Tomasz Napierala int 2109ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 2110ec125fbbSEdward Tomasz Napierala { 2111ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 2112c1a43e73SEdward Tomasz Napierala struct rctl_rule_link *link; 2113c1a43e73SEdward Tomasz Napierala int error; 2114ec125fbbSEdward Tomasz Napierala 21154b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2116bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21170b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 2118ec125fbbSEdward Tomasz Napierala 2119bbe4eb6dSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 2120ec125fbbSEdward Tomasz Napierala 2121ec125fbbSEdward Tomasz Napierala /* 2122ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 2123ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 2124ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 2125ec125fbbSEdward Tomasz Napierala */ 2126ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 2127ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2128ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2129ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 2130ec125fbbSEdward Tomasz Napierala if (rule == NULL) 2131ec125fbbSEdward Tomasz Napierala goto fail; 2132ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 2133ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 2134ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 2135ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2136ec125fbbSEdward Tomasz Napierala rule); 2137ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 2138ec125fbbSEdward Tomasz Napierala if (error != 0) 2139ec125fbbSEdward Tomasz Napierala goto fail; 2140ec125fbbSEdward Tomasz Napierala } else { 2141ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2142ec125fbbSEdward Tomasz Napierala link->rrl_rule); 2143ec125fbbSEdward Tomasz Napierala if (error != 0) 2144ec125fbbSEdward Tomasz Napierala goto fail; 2145ec125fbbSEdward Tomasz Napierala } 2146ec125fbbSEdward Tomasz Napierala } 2147ec125fbbSEdward Tomasz Napierala 2148ec125fbbSEdward Tomasz Napierala return (0); 2149ec125fbbSEdward Tomasz Napierala 2150ec125fbbSEdward Tomasz Napierala fail: 2151ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 2152ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 2153ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2154ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2155ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2156ec125fbbSEdward Tomasz Napierala } 2157bbe4eb6dSEdward Tomasz Napierala 2158ec125fbbSEdward Tomasz Napierala return (EAGAIN); 2159ec125fbbSEdward Tomasz Napierala } 2160ec125fbbSEdward Tomasz Napierala 2161ec125fbbSEdward Tomasz Napierala /* 2162ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 2163ec125fbbSEdward Tomasz Napierala */ 2164ec125fbbSEdward Tomasz Napierala void 2165ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 2166ec125fbbSEdward Tomasz Napierala { 2167ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 2168ec125fbbSEdward Tomasz Napierala 21694b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2170bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21714b5c9cf6SEdward Tomasz Napierala 2172ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 2173ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 2174ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2175ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2176ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2177ec125fbbSEdward Tomasz Napierala } 2178ec125fbbSEdward Tomasz Napierala } 2179ec125fbbSEdward Tomasz Napierala 2180ec125fbbSEdward Tomasz Napierala static void 2181ec125fbbSEdward Tomasz Napierala rctl_init(void) 2182ec125fbbSEdward Tomasz Napierala { 2183ec125fbbSEdward Tomasz Napierala 21844b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 21854b5c9cf6SEdward Tomasz Napierala return; 21864b5c9cf6SEdward Tomasz Napierala 2187c1a43e73SEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 218823e6fff2SEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 2189ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 2190ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 219123e6fff2SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2192ae34b6ffSEdward Tomasz Napierala 21938bd8c8f1SEdward Tomasz Napierala /* 21948bd8c8f1SEdward Tomasz Napierala * Set default values, making sure not to overwrite the ones 21958bd8c8f1SEdward Tomasz Napierala * fetched from tunables. Most of those could be set at the 21968bd8c8f1SEdward Tomasz Napierala * declaration, except for the rctl_throttle_max - we cannot 21978bd8c8f1SEdward Tomasz Napierala * set it there due to hz not being compile time constant. 21988bd8c8f1SEdward Tomasz Napierala */ 21998bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_min < 1) 2200ae34b6ffSEdward Tomasz Napierala rctl_throttle_min = 1; 22018bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_max < rctl_throttle_min) 2202ae34b6ffSEdward Tomasz Napierala rctl_throttle_max = 2 * hz; 22038bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct < 0) 2204ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct = 100; 22058bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct2 < 0) 2206ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct2 = 100; 2207ec125fbbSEdward Tomasz Napierala } 2208ec125fbbSEdward Tomasz Napierala 2209ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 2210ec125fbbSEdward Tomasz Napierala 2211ec125fbbSEdward Tomasz Napierala int 22128451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 2213ec125fbbSEdward Tomasz Napierala { 2214ec125fbbSEdward Tomasz Napierala 2215ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2216ec125fbbSEdward Tomasz Napierala } 2217ec125fbbSEdward Tomasz Napierala 2218ec125fbbSEdward Tomasz Napierala int 22198451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 2220ec125fbbSEdward Tomasz Napierala { 2221ec125fbbSEdward Tomasz Napierala 2222ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2223ec125fbbSEdward Tomasz Napierala } 2224ec125fbbSEdward Tomasz Napierala 2225ec125fbbSEdward Tomasz Napierala int 22268451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 2227ec125fbbSEdward Tomasz Napierala { 2228ec125fbbSEdward Tomasz Napierala 2229ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2230ec125fbbSEdward Tomasz Napierala } 2231ec125fbbSEdward Tomasz Napierala 2232ec125fbbSEdward Tomasz Napierala int 22338451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 2234ec125fbbSEdward Tomasz Napierala { 2235ec125fbbSEdward Tomasz Napierala 2236ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2237ec125fbbSEdward Tomasz Napierala } 2238ec125fbbSEdward Tomasz Napierala 2239ec125fbbSEdward Tomasz Napierala int 22408451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 2241ec125fbbSEdward Tomasz Napierala { 2242ec125fbbSEdward Tomasz Napierala 2243ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2244ec125fbbSEdward Tomasz Napierala } 2245ec125fbbSEdward Tomasz Napierala 2246ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 2247