1ec125fbbSEdward Tomasz Napierala /*- 2ec125fbbSEdward Tomasz Napierala * Copyright (c) 2010 The FreeBSD Foundation 3ec125fbbSEdward Tomasz Napierala * All rights reserved. 4ec125fbbSEdward Tomasz Napierala * 5ec125fbbSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 6ec125fbbSEdward Tomasz Napierala * from the FreeBSD Foundation. 7ec125fbbSEdward Tomasz Napierala * 8ec125fbbSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 9ec125fbbSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 10ec125fbbSEdward Tomasz Napierala * are met: 11ec125fbbSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 12ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 13ec125fbbSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 14ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 15ec125fbbSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 16ec125fbbSEdward Tomasz Napierala * 17ec125fbbSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18ec125fbbSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19ec125fbbSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20ec125fbbSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21ec125fbbSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22ec125fbbSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23ec125fbbSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24ec125fbbSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25ec125fbbSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26ec125fbbSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27ec125fbbSEdward Tomasz Napierala * SUCH DAMAGE. 28ec125fbbSEdward Tomasz Napierala * 29ec125fbbSEdward Tomasz Napierala * $FreeBSD$ 30ec125fbbSEdward Tomasz Napierala */ 31ec125fbbSEdward Tomasz Napierala 32ec125fbbSEdward Tomasz Napierala #include <sys/cdefs.h> 33ec125fbbSEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 34ec125fbbSEdward Tomasz Napierala 35ec125fbbSEdward Tomasz Napierala #include <sys/param.h> 36ec125fbbSEdward Tomasz Napierala #include <sys/bus.h> 37ec125fbbSEdward Tomasz Napierala #include <sys/malloc.h> 38ec125fbbSEdward Tomasz Napierala #include <sys/queue.h> 39ec125fbbSEdward Tomasz Napierala #include <sys/refcount.h> 40ec125fbbSEdward Tomasz Napierala #include <sys/jail.h> 41ec125fbbSEdward Tomasz Napierala #include <sys/kernel.h> 42ec125fbbSEdward Tomasz Napierala #include <sys/limits.h> 43ec125fbbSEdward Tomasz Napierala #include <sys/loginclass.h> 44ec125fbbSEdward Tomasz Napierala #include <sys/priv.h> 45ec125fbbSEdward Tomasz Napierala #include <sys/proc.h> 46ec125fbbSEdward Tomasz Napierala #include <sys/racct.h> 47ec125fbbSEdward Tomasz Napierala #include <sys/rctl.h> 48ec125fbbSEdward Tomasz Napierala #include <sys/resourcevar.h> 49ec125fbbSEdward Tomasz Napierala #include <sys/sx.h> 50ec125fbbSEdward Tomasz Napierala #include <sys/sysent.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 972b4035eeSEdward Tomasz Napierala SYSCTL_NODE(_kern_racct, OID_AUTO, rctl, CTLFLAG_RW, 0, "Resource Limits"); 982b4035eeSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, maxbufsize, CTLFLAG_RWTUN, 992b4035eeSEdward Tomasz Napierala &rctl_maxbufsize, 0, "Maximum output buffer size"); 100f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW, 101f70c075eSEdward Tomasz Napierala &rctl_log_rate_limit, 0, "Maximum number of log messages per second"); 1028bd8c8f1SEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RWTUN, 103f70c075eSEdward Tomasz Napierala &rctl_devctl_rate_limit, 0, "Maximum number of devctl messages per second"); 1048bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_min, 1058bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_min_sysctl, "IU", 1068bd8c8f1SEdward Tomasz Napierala "Shortest throttling duration, in hz"); 1078bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_min", &rctl_throttle_min); 1088bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_max, 1098bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_max_sysctl, "IU", 1108bd8c8f1SEdward Tomasz Napierala "Longest throttling duration, in hz"); 1118bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_max", &rctl_throttle_max); 1128bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct, 1138bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_pct_sysctl, "IU", 114ae34b6ffSEdward Tomasz Napierala "Throttling penalty for process consumption, in percent"); 1158bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct", &rctl_throttle_pct); 1168bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct2, 1178bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_pct2_sysctl, "IU", 118ae34b6ffSEdward Tomasz Napierala "Throttling penalty for container consumption, in percent"); 1198bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct2", &rctl_throttle_pct2); 1202b4035eeSEdward Tomasz Napierala 121ec125fbbSEdward Tomasz Napierala /* 122ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 123ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 124ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 125ec125fbbSEdward Tomasz Napierala */ 126ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 127ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 128ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 129ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 130ec125fbbSEdward Tomasz Napierala }; 131ec125fbbSEdward Tomasz Napierala 132ec125fbbSEdward Tomasz Napierala struct dict { 133ec125fbbSEdward Tomasz Napierala const char *d_name; 134ec125fbbSEdward Tomasz Napierala int d_value; 135ec125fbbSEdward Tomasz Napierala }; 136ec125fbbSEdward Tomasz Napierala 137ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 138ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 139ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 140ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 141ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 142ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 143ec125fbbSEdward Tomasz Napierala 144ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 14585a2f1b4SEdward Tomasz Napierala { "cputime", RACCT_CPU }, 14685a2f1b4SEdward Tomasz Napierala { "datasize", RACCT_DATA }, 14785a2f1b4SEdward Tomasz Napierala { "stacksize", RACCT_STACK }, 14885a2f1b4SEdward Tomasz Napierala { "coredumpsize", RACCT_CORE }, 14985a2f1b4SEdward Tomasz Napierala { "memoryuse", RACCT_RSS }, 15085a2f1b4SEdward Tomasz Napierala { "memorylocked", RACCT_MEMLOCK }, 15185a2f1b4SEdward Tomasz Napierala { "maxproc", RACCT_NPROC }, 15285a2f1b4SEdward Tomasz Napierala { "openfiles", RACCT_NOFILE }, 15385a2f1b4SEdward Tomasz Napierala { "vmemoryuse", RACCT_VMEM }, 15485a2f1b4SEdward Tomasz Napierala { "pseudoterminals", RACCT_NPTS }, 15585a2f1b4SEdward Tomasz Napierala { "swapuse", RACCT_SWAP }, 156ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 157ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 158ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 159ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 160ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 161ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 162ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 163ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 164ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 16536af9869SEdward Tomasz Napierala { "pcpu", RACCT_PCTCPU }, 166ae34b6ffSEdward Tomasz Napierala { "readbps", RACCT_READBPS }, 167ae34b6ffSEdward Tomasz Napierala { "writebps", RACCT_WRITEBPS }, 168ae34b6ffSEdward Tomasz Napierala { "readiops", RACCT_READIOPS }, 169ae34b6ffSEdward Tomasz Napierala { "writeiops", RACCT_WRITEIOPS }, 170ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 171ec125fbbSEdward Tomasz Napierala 172ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 173ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 174ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 175ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 176ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 177ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 178ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 179ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 180ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 181ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 182ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 183ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 184ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 185ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 186ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 187ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 188ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 189ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 190ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 191ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 192ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 193ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 194ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 195ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 196ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 197ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 198ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 199ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 200ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 201ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 202ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 203ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 204ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 205ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 206ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 207ae34b6ffSEdward Tomasz Napierala { "throttle", RCTL_ACTION_THROTTLE }, 208ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 209ec125fbbSEdward Tomasz Napierala 210ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 211ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 212ec125fbbSEdward Tomasz Napierala 213ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 214c1a43e73SEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 215ec125fbbSEdward Tomasz Napierala static struct rwlock rctl_lock; 216ec125fbbSEdward Tomasz Napierala RW_SYSINIT(rctl_lock, &rctl_lock, "RCTL lock"); 217ec125fbbSEdward Tomasz Napierala 2184c230cdaSEdward Tomasz Napierala #define RCTL_RLOCK() rw_rlock(&rctl_lock) 2194c230cdaSEdward Tomasz Napierala #define RCTL_RUNLOCK() rw_runlock(&rctl_lock) 2204c230cdaSEdward Tomasz Napierala #define RCTL_WLOCK() rw_wlock(&rctl_lock) 2214c230cdaSEdward Tomasz Napierala #define RCTL_WUNLOCK() rw_wunlock(&rctl_lock) 2224c230cdaSEdward Tomasz Napierala #define RCTL_LOCK_ASSERT() rw_assert(&rctl_lock, RA_LOCKED) 2234c230cdaSEdward Tomasz Napierala #define RCTL_WLOCK_ASSERT() rw_assert(&rctl_lock, RA_WLOCKED) 2244c230cdaSEdward Tomasz Napierala 225ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 226ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 227ec125fbbSEdward Tomasz Napierala 228d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 229ec125fbbSEdward Tomasz Napierala 2308bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS) 2318bd8c8f1SEdward Tomasz Napierala { 232c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_min; 2338bd8c8f1SEdward Tomasz Napierala 2348bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2358bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2368bd8c8f1SEdward Tomasz Napierala return (error); 2378bd8c8f1SEdward Tomasz Napierala if (val < 1 || val > rctl_throttle_max) 2388bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2398bd8c8f1SEdward Tomasz Napierala 2408bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2418bd8c8f1SEdward Tomasz Napierala rctl_throttle_min = val; 2428bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2438bd8c8f1SEdward Tomasz Napierala 2448bd8c8f1SEdward Tomasz Napierala return (0); 2458bd8c8f1SEdward Tomasz Napierala } 2468bd8c8f1SEdward Tomasz Napierala 2478bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS) 2488bd8c8f1SEdward Tomasz Napierala { 249c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_max; 2508bd8c8f1SEdward Tomasz Napierala 2518bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2528bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2538bd8c8f1SEdward Tomasz Napierala return (error); 2548bd8c8f1SEdward Tomasz Napierala if (val < rctl_throttle_min) 2558bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2568bd8c8f1SEdward Tomasz Napierala 2578bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2588bd8c8f1SEdward Tomasz Napierala rctl_throttle_max = val; 2598bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2608bd8c8f1SEdward Tomasz Napierala 2618bd8c8f1SEdward Tomasz Napierala return (0); 2628bd8c8f1SEdward Tomasz Napierala } 2638bd8c8f1SEdward Tomasz Napierala 2648bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS) 2658bd8c8f1SEdward Tomasz Napierala { 266c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct; 2678bd8c8f1SEdward Tomasz Napierala 2688bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2698bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2708bd8c8f1SEdward Tomasz Napierala return (error); 2718bd8c8f1SEdward Tomasz Napierala if (val < 0) 2728bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2738bd8c8f1SEdward Tomasz Napierala 2748bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2758bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct = val; 2768bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2778bd8c8f1SEdward Tomasz Napierala 2788bd8c8f1SEdward Tomasz Napierala return (0); 2798bd8c8f1SEdward Tomasz Napierala } 2808bd8c8f1SEdward Tomasz Napierala 2818bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS) 2828bd8c8f1SEdward Tomasz Napierala { 283c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct2; 2848bd8c8f1SEdward Tomasz Napierala 2858bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2868bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2878bd8c8f1SEdward Tomasz Napierala return (error); 2888bd8c8f1SEdward Tomasz Napierala if (val < 0) 2898bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2908bd8c8f1SEdward Tomasz Napierala 2918bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2928bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct2 = val; 2938bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2948bd8c8f1SEdward Tomasz Napierala 2958bd8c8f1SEdward Tomasz Napierala return (0); 2968bd8c8f1SEdward Tomasz Napierala } 2978bd8c8f1SEdward Tomasz Napierala 298ec125fbbSEdward Tomasz Napierala static const char * 299ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 300ec125fbbSEdward Tomasz Napierala { 301ec125fbbSEdward Tomasz Napierala int i; 302ec125fbbSEdward Tomasz Napierala 303ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 304ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 305ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 306ec125fbbSEdward Tomasz Napierala } 307ec125fbbSEdward Tomasz Napierala 308ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 309ec125fbbSEdward Tomasz Napierala } 310ec125fbbSEdward Tomasz Napierala 311ec125fbbSEdward Tomasz Napierala static const char * 312ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 313ec125fbbSEdward Tomasz Napierala { 314ec125fbbSEdward Tomasz Napierala int i; 315ec125fbbSEdward Tomasz Napierala 316ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 317ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 318ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 319ec125fbbSEdward Tomasz Napierala } 320ec125fbbSEdward Tomasz Napierala 321ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 322ec125fbbSEdward Tomasz Napierala } 323ec125fbbSEdward Tomasz Napierala 324ec125fbbSEdward Tomasz Napierala const char * 325ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 326ec125fbbSEdward Tomasz Napierala { 327ec125fbbSEdward Tomasz Napierala int i; 328ec125fbbSEdward Tomasz Napierala 329ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 330ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 331ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 332ec125fbbSEdward Tomasz Napierala } 333ec125fbbSEdward Tomasz Napierala 334ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 335ec125fbbSEdward Tomasz Napierala } 336ec125fbbSEdward Tomasz Napierala 337ac3c9819SEdward Tomasz Napierala static struct racct * 338ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 339ac3c9819SEdward Tomasz Napierala { 340ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 341ac3c9819SEdward Tomasz Napierala 342ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3434c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 344ac3c9819SEdward Tomasz Napierala 345ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 346ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 347ac3c9819SEdward Tomasz Napierala return (p->p_racct); 348ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 349ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 350ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 351ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 352ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 353ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 354ac3c9819SEdward Tomasz Napierala default: 355ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 356ac3c9819SEdward Tomasz Napierala } 357ac3c9819SEdward Tomasz Napierala } 358ac3c9819SEdward Tomasz Napierala 359ec125fbbSEdward Tomasz Napierala /* 360ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 361ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 362ec125fbbSEdward Tomasz Napierala */ 363ec125fbbSEdward Tomasz Napierala static int64_t 364ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 365ec125fbbSEdward Tomasz Napierala { 366ac3c9819SEdward Tomasz Napierala const struct racct *racct; 367c1a43e73SEdward Tomasz Napierala int64_t available; 368ec125fbbSEdward Tomasz Napierala 3694b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3704c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 371ec125fbbSEdward Tomasz Napierala 372ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 373ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 374ec125fbbSEdward Tomasz Napierala 375ec125fbbSEdward Tomasz Napierala return (available); 376ec125fbbSEdward Tomasz Napierala } 377ec125fbbSEdward Tomasz Napierala 378ec125fbbSEdward Tomasz Napierala /* 379ae34b6ffSEdward Tomasz Napierala * Called every second for proc, uidinfo, loginclass, and jail containers. 380ae34b6ffSEdward Tomasz Napierala * If the limit isn't exceeded, it decreases the usage amount to zero. 381ae34b6ffSEdward Tomasz Napierala * Otherwise, it decreases it by the value of the limit. This way 382ae34b6ffSEdward Tomasz Napierala * resource consumption exceeding the limit "carries over" to the next 383ae34b6ffSEdward Tomasz Napierala * period. 384ec125fbbSEdward Tomasz Napierala */ 385ae34b6ffSEdward Tomasz Napierala void 386ae34b6ffSEdward Tomasz Napierala rctl_throttle_decay(struct racct *racct, int resource) 387ec125fbbSEdward Tomasz Napierala { 388ae34b6ffSEdward Tomasz Napierala struct rctl_rule *rule; 389ae34b6ffSEdward Tomasz Napierala struct rctl_rule_link *link; 390ae34b6ffSEdward Tomasz Napierala int64_t minavailable; 391ec125fbbSEdward Tomasz Napierala 3924b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 393ec125fbbSEdward Tomasz Napierala 394ae34b6ffSEdward Tomasz Napierala minavailable = INT64_MAX; 395ec125fbbSEdward Tomasz Napierala 396ae34b6ffSEdward Tomasz Napierala RCTL_RLOCK(); 397ae34b6ffSEdward Tomasz Napierala 398ae34b6ffSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 399ae34b6ffSEdward Tomasz Napierala rule = link->rrl_rule; 400ae34b6ffSEdward Tomasz Napierala 401ae34b6ffSEdward Tomasz Napierala if (rule->rr_resource != resource) 402ae34b6ffSEdward Tomasz Napierala continue; 403ae34b6ffSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_THROTTLE) 404ae34b6ffSEdward Tomasz Napierala continue; 405ae34b6ffSEdward Tomasz Napierala 406ae34b6ffSEdward Tomasz Napierala if (rule->rr_amount < minavailable) 407ae34b6ffSEdward Tomasz Napierala minavailable = rule->rr_amount; 408ae34b6ffSEdward Tomasz Napierala } 409ae34b6ffSEdward Tomasz Napierala 410ae34b6ffSEdward Tomasz Napierala RCTL_RUNLOCK(); 411ae34b6ffSEdward Tomasz Napierala 412ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] < minavailable) { 413ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = 0; 414ae34b6ffSEdward Tomasz Napierala } else { 415ae34b6ffSEdward Tomasz Napierala /* 416ae34b6ffSEdward Tomasz Napierala * Cap utilization counter at ten times the limit. Otherwise, 417ae34b6ffSEdward Tomasz Napierala * if we changed the rule lowering the allowed amount, it could 418ae34b6ffSEdward Tomasz Napierala * take unreasonably long time for the accumulated resource 419ae34b6ffSEdward Tomasz Napierala * usage to drop. 420ae34b6ffSEdward Tomasz Napierala */ 421ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] > minavailable * 10) 422ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = minavailable * 10; 423ae34b6ffSEdward Tomasz Napierala 424ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] -= minavailable; 425ae34b6ffSEdward Tomasz Napierala } 426ec125fbbSEdward Tomasz Napierala } 427ec125fbbSEdward Tomasz Napierala 428ec125fbbSEdward Tomasz Napierala /* 429af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 43036af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 43136af9869SEdward Tomasz Napierala */ 43236af9869SEdward Tomasz Napierala int64_t 43336af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 43436af9869SEdward Tomasz Napierala struct rctl_rule *rule; 43536af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 43636af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 43736af9869SEdward Tomasz Napierala 4384b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 4394b5c9cf6SEdward Tomasz Napierala 44036af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 44136af9869SEdward Tomasz Napierala limit = 0; 44236af9869SEdward Tomasz Napierala 4434c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 44436af9869SEdward Tomasz Napierala 44536af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 44636af9869SEdward Tomasz Napierala rule = link->rrl_rule; 44736af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 44836af9869SEdward Tomasz Napierala continue; 44936af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 45036af9869SEdward Tomasz Napierala continue; 45136af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 45236af9869SEdward Tomasz Napierala if (available < minavailable) { 45336af9869SEdward Tomasz Napierala minavailable = available; 45436af9869SEdward Tomasz Napierala limit = rule->rr_amount; 45536af9869SEdward Tomasz Napierala } 45636af9869SEdward Tomasz Napierala } 45736af9869SEdward Tomasz Napierala 4584c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 45936af9869SEdward Tomasz Napierala 46036af9869SEdward Tomasz Napierala /* 46136af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 46236af9869SEdward Tomasz Napierala * %cpu resource. This makes %cpu throttling more agressive 46336af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 46436af9869SEdward Tomasz Napierala */ 46536af9869SEdward Tomasz Napierala if (limit != 0) { 46636af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 46736af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 46836af9869SEdward Tomasz Napierala else 46936af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 47036af9869SEdward Tomasz Napierala } 47136af9869SEdward Tomasz Napierala 47236af9869SEdward Tomasz Napierala return (minavailable); 47336af9869SEdward Tomasz Napierala } 47436af9869SEdward Tomasz Napierala 475ae34b6ffSEdward Tomasz Napierala static uint64_t 476ae34b6ffSEdward Tomasz Napierala xadd(uint64_t a, uint64_t b) 477ae34b6ffSEdward Tomasz Napierala { 478ae34b6ffSEdward Tomasz Napierala uint64_t c; 479ae34b6ffSEdward Tomasz Napierala 480ae34b6ffSEdward Tomasz Napierala c = a + b; 481ae34b6ffSEdward Tomasz Napierala 482ae34b6ffSEdward Tomasz Napierala /* 483ae34b6ffSEdward Tomasz Napierala * Detect overflow. 484ae34b6ffSEdward Tomasz Napierala */ 485ae34b6ffSEdward Tomasz Napierala if (c < a || c < b) 486ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 487ae34b6ffSEdward Tomasz Napierala 488ae34b6ffSEdward Tomasz Napierala return (c); 489ae34b6ffSEdward Tomasz Napierala } 490ae34b6ffSEdward Tomasz Napierala 491ae34b6ffSEdward Tomasz Napierala static uint64_t 492ae34b6ffSEdward Tomasz Napierala xmul(uint64_t a, uint64_t b) 493ae34b6ffSEdward Tomasz Napierala { 494ae34b6ffSEdward Tomasz Napierala 495f459a818SEdward Tomasz Napierala if (b != 0 && a > UINT64_MAX / b) 496ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 497ae34b6ffSEdward Tomasz Napierala 498f459a818SEdward Tomasz Napierala return (a * b); 499ae34b6ffSEdward Tomasz Napierala } 500ae34b6ffSEdward Tomasz Napierala 50136af9869SEdward Tomasz Napierala /* 502ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 503ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 504ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 505ec125fbbSEdward Tomasz Napierala */ 506ec125fbbSEdward Tomasz Napierala int 507ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 508ec125fbbSEdward Tomasz Napierala { 509f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 510f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 511ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 512ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 513ec125fbbSEdward Tomasz Napierala struct sbuf sb; 514c1a43e73SEdward Tomasz Napierala char *buf; 515ae34b6ffSEdward Tomasz Napierala int64_t available; 516ae34b6ffSEdward Tomasz Napierala uint64_t sleep_ms, sleep_ratio; 517ec125fbbSEdward Tomasz Napierala int should_deny = 0; 518ec125fbbSEdward Tomasz Napierala 519ae34b6ffSEdward Tomasz Napierala 5204b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 5214b5c9cf6SEdward Tomasz Napierala 5224c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 523ec125fbbSEdward Tomasz Napierala 524ec125fbbSEdward Tomasz Napierala /* 525ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 526ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 527ec125fbbSEdward Tomasz Napierala */ 528ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 529ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 530ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 531ec125fbbSEdward Tomasz Napierala continue; 532ae34b6ffSEdward Tomasz Napierala 533ae34b6ffSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 534ae34b6ffSEdward Tomasz Napierala if (available >= (int64_t)amount) { 535ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 536ec125fbbSEdward Tomasz Napierala continue; 537ec125fbbSEdward Tomasz Napierala } 538ec125fbbSEdward Tomasz Napierala 539ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 540ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 541ec125fbbSEdward Tomasz Napierala should_deny = 1; 542ec125fbbSEdward Tomasz Napierala continue; 543ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 544ec125fbbSEdward Tomasz Napierala /* 545ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 546ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 547ec125fbbSEdward Tomasz Napierala */ 548ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 549ec125fbbSEdward Tomasz Napierala continue; 550ec125fbbSEdward Tomasz Napierala 55172a401d9SEdward Tomasz Napierala /* 55272a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 55372a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 55472a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 55572a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 55672a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 55772a401d9SEdward Tomasz Napierala */ 55872a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 55972a401d9SEdward Tomasz Napierala continue; 56072a401d9SEdward Tomasz Napierala 561f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 562f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 563ec125fbbSEdward Tomasz Napierala continue; 564ec125fbbSEdward Tomasz Napierala 565ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 566ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 567ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 568ec125fbbSEdward Tomasz Napierala continue; 569ec125fbbSEdward Tomasz Napierala } 570ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 571ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 572ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 573ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 574ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 575ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 576a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 577ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 578ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 579ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 580ec125fbbSEdward Tomasz Napierala continue; 581ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 582ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 583ec125fbbSEdward Tomasz Napierala continue; 584ec125fbbSEdward Tomasz Napierala 58572a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 58672a401d9SEdward Tomasz Napierala continue; 58772a401d9SEdward Tomasz Napierala 588f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 589f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 590f70c075eSEdward Tomasz Napierala continue; 591f70c075eSEdward Tomasz Napierala 592ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 593ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 594ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 595ec125fbbSEdward Tomasz Napierala continue; 596ec125fbbSEdward Tomasz Napierala } 597ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 598ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 599ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 600ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 601ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 602a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 603ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 604ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 605ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 606ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 607ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 608ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 609ec125fbbSEdward Tomasz Napierala continue; 610ae34b6ffSEdward Tomasz Napierala case RCTL_ACTION_THROTTLE: 611ae34b6ffSEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 612ae34b6ffSEdward Tomasz Napierala continue; 613ae34b6ffSEdward Tomasz Napierala 614ae34b6ffSEdward Tomasz Napierala /* 615ae34b6ffSEdward Tomasz Napierala * Make the process sleep for a fraction of second 616ae34b6ffSEdward Tomasz Napierala * proportional to the ratio of process' resource 617ae34b6ffSEdward Tomasz Napierala * utilization compared to the limit. The point is 618ae34b6ffSEdward Tomasz Napierala * to penalize resource hogs: processes that consume 619ae34b6ffSEdward Tomasz Napierala * more of the available resources sleep for longer. 620ae34b6ffSEdward Tomasz Napierala * 621ae34b6ffSEdward Tomasz Napierala * We're trying to defer division until the very end, 622ae34b6ffSEdward Tomasz Napierala * to minimize the rounding effects. The following 623ae34b6ffSEdward Tomasz Napierala * calculation could have been written in a clearer 624ae34b6ffSEdward Tomasz Napierala * way like this: 625ae34b6ffSEdward Tomasz Napierala * 626ae34b6ffSEdward Tomasz Napierala * sleep_ms = hz * p->p_racct->r_resources[resource] / 627ae34b6ffSEdward Tomasz Napierala * rule->rr_amount; 628ae34b6ffSEdward Tomasz Napierala * sleep_ms *= rctl_throttle_pct / 100; 629ae34b6ffSEdward Tomasz Napierala * if (sleep_ms < rctl_throttle_min) 630ae34b6ffSEdward Tomasz Napierala * sleep_ms = rctl_throttle_min; 631ae34b6ffSEdward Tomasz Napierala * 632ae34b6ffSEdward Tomasz Napierala */ 633ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(hz, p->p_racct->r_resources[resource]); 634ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(sleep_ms, rctl_throttle_pct) / 100; 635ae34b6ffSEdward Tomasz Napierala if (sleep_ms < rctl_throttle_min * rule->rr_amount) 636ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_min * rule->rr_amount; 637ae34b6ffSEdward Tomasz Napierala 638ae34b6ffSEdward Tomasz Napierala /* 639ae34b6ffSEdward Tomasz Napierala * Multiply that by the ratio of the resource 640ae34b6ffSEdward Tomasz Napierala * consumption for the container compared to the limit, 641ae34b6ffSEdward Tomasz Napierala * squared. In other words, a process in a container 642ae34b6ffSEdward Tomasz Napierala * that is two times over the limit will be throttled 643ae34b6ffSEdward Tomasz Napierala * four times as much for hitting the same rule. The 644ae34b6ffSEdward Tomasz Napierala * point is to penalize processes more if the container 645ae34b6ffSEdward Tomasz Napierala * itself (eg certain UID or jail) is above the limit. 646ae34b6ffSEdward Tomasz Napierala */ 647ae34b6ffSEdward Tomasz Napierala if (available < 0) 648ae34b6ffSEdward Tomasz Napierala sleep_ratio = -available / rule->rr_amount; 649ae34b6ffSEdward Tomasz Napierala else 650ae34b6ffSEdward Tomasz Napierala sleep_ratio = 0; 651ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, sleep_ratio); 652ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, rctl_throttle_pct2) / 100; 653ae34b6ffSEdward Tomasz Napierala sleep_ms = xadd(sleep_ms, xmul(sleep_ms, sleep_ratio)); 654ae34b6ffSEdward Tomasz Napierala 655ae34b6ffSEdward Tomasz Napierala /* 656ae34b6ffSEdward Tomasz Napierala * Finally the division. 657ae34b6ffSEdward Tomasz Napierala */ 658ae34b6ffSEdward Tomasz Napierala sleep_ms /= rule->rr_amount; 659ae34b6ffSEdward Tomasz Napierala 660ae34b6ffSEdward Tomasz Napierala if (sleep_ms > rctl_throttle_max) 661ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_max; 662ae34b6ffSEdward Tomasz Napierala #if 0 663*74a7305aSEdward Tomasz Napierala printf("%s: pid %d (%s), %jd of %jd, will sleep for %ju ms (ratio %ju, available %jd)\n", 664ae34b6ffSEdward Tomasz Napierala __func__, p->p_pid, p->p_comm, 665ae34b6ffSEdward Tomasz Napierala p->p_racct->r_resources[resource], 666*74a7305aSEdward Tomasz Napierala rule->rr_amount, (uintmax_t)sleep_ms, 667*74a7305aSEdward Tomasz Napierala (uintmax_t)sleep_ratio, (intmax_t)available); 668ae34b6ffSEdward Tomasz Napierala #endif 669ae34b6ffSEdward Tomasz Napierala 670ae34b6ffSEdward Tomasz Napierala KASSERT(sleep_ms >= rctl_throttle_min, ("%s: %ju < %d\n", 671ae34b6ffSEdward Tomasz Napierala __func__, (uintmax_t)sleep_ms, rctl_throttle_min)); 672ae34b6ffSEdward Tomasz Napierala racct_proc_throttle(p, sleep_ms); 673ae34b6ffSEdward Tomasz Napierala continue; 674ec125fbbSEdward Tomasz Napierala default: 675ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 676ec125fbbSEdward Tomasz Napierala continue; 677ec125fbbSEdward Tomasz Napierala 67872a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 67972a401d9SEdward Tomasz Napierala continue; 68072a401d9SEdward Tomasz Napierala 681ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 682ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 683ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 684ec125fbbSEdward Tomasz Napierala rule->rr_action)); 685ec125fbbSEdward Tomasz Napierala 686ec125fbbSEdward Tomasz Napierala /* 687ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 688ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 689ec125fbbSEdward Tomasz Napierala */ 6908451d0ddSKip Macy kern_psignal(p, rule->rr_action); 691ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 692ec125fbbSEdward Tomasz Napierala continue; 693ec125fbbSEdward Tomasz Napierala } 694ec125fbbSEdward Tomasz Napierala } 695ec125fbbSEdward Tomasz Napierala 6964c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 697ec125fbbSEdward Tomasz Napierala 698ec125fbbSEdward Tomasz Napierala if (should_deny) { 699ec125fbbSEdward Tomasz Napierala /* 700ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 701ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 702ec125fbbSEdward Tomasz Napierala */ 703ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 704ec125fbbSEdward Tomasz Napierala } 705ec125fbbSEdward Tomasz Napierala 706ec125fbbSEdward Tomasz Napierala return (0); 707ec125fbbSEdward Tomasz Napierala } 708ec125fbbSEdward Tomasz Napierala 709ec125fbbSEdward Tomasz Napierala uint64_t 710ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 711ec125fbbSEdward Tomasz Napierala { 712ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 713ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 714ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 715ec125fbbSEdward Tomasz Napierala 7164b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7174b5c9cf6SEdward Tomasz Napierala 7184c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 719ec125fbbSEdward Tomasz Napierala 720ec125fbbSEdward Tomasz Napierala /* 721ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 722ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 723ec125fbbSEdward Tomasz Napierala */ 724ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 725ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 726ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 727ec125fbbSEdward Tomasz Napierala continue; 728ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 729ec125fbbSEdward Tomasz Napierala continue; 730ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 731ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 732ec125fbbSEdward Tomasz Napierala } 733ec125fbbSEdward Tomasz Napierala 7344c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 735ec125fbbSEdward Tomasz Napierala 736ec125fbbSEdward Tomasz Napierala return (amount); 737ec125fbbSEdward Tomasz Napierala } 738ec125fbbSEdward Tomasz Napierala 739ec125fbbSEdward Tomasz Napierala uint64_t 740ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 741ec125fbbSEdward Tomasz Napierala { 742ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 743ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 744ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 745ec125fbbSEdward Tomasz Napierala 746ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 747ec125fbbSEdward Tomasz Napierala 7484b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7494b5c9cf6SEdward Tomasz Napierala 7504c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 751ec125fbbSEdward Tomasz Napierala 752ec125fbbSEdward Tomasz Napierala /* 753ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 754ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 755ec125fbbSEdward Tomasz Napierala */ 756ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 757ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 758ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 759ec125fbbSEdward Tomasz Napierala continue; 760ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 761ec125fbbSEdward Tomasz Napierala continue; 762ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 763ec125fbbSEdward Tomasz Napierala if (available < minavailable) 764ec125fbbSEdward Tomasz Napierala minavailable = available; 765ec125fbbSEdward Tomasz Napierala } 766ec125fbbSEdward Tomasz Napierala 7674c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 768ec125fbbSEdward Tomasz Napierala 769ec125fbbSEdward Tomasz Napierala /* 770ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 771ec125fbbSEdward Tomasz Napierala */ 772ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 773ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 774ec125fbbSEdward Tomasz Napierala minavailable += allocated; 775ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 776ec125fbbSEdward Tomasz Napierala minavailable = 0; 777ec125fbbSEdward Tomasz Napierala return (minavailable); 778ec125fbbSEdward Tomasz Napierala } 779ec125fbbSEdward Tomasz Napierala 780ec125fbbSEdward Tomasz Napierala static int 781ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 782ec125fbbSEdward Tomasz Napierala { 783ec125fbbSEdward Tomasz Napierala 7844b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7854b5c9cf6SEdward Tomasz Napierala 786ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 787ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 788ec125fbbSEdward Tomasz Napierala return (0); 789ec125fbbSEdward Tomasz Napierala 790ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 791ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 792ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 793ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 794ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 795ec125fbbSEdward Tomasz Napierala return (0); 796ec125fbbSEdward Tomasz Napierala break; 797ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 798ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 799ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 800ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 801ec125fbbSEdward Tomasz Napierala return (0); 802ec125fbbSEdward Tomasz Napierala break; 803ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 804415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 805415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 806415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 807ec125fbbSEdward Tomasz Napierala return (0); 808ec125fbbSEdward Tomasz Napierala break; 809ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 810a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 811a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 812a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 813ec125fbbSEdward Tomasz Napierala return (0); 814ec125fbbSEdward Tomasz Napierala break; 815ec125fbbSEdward Tomasz Napierala default: 816ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 817ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 818ec125fbbSEdward Tomasz Napierala } 819ec125fbbSEdward Tomasz Napierala } 820ec125fbbSEdward Tomasz Napierala 821ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 822ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 823ec125fbbSEdward Tomasz Napierala return (0); 824ec125fbbSEdward Tomasz Napierala } 825ec125fbbSEdward Tomasz Napierala 826ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 827ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 828ec125fbbSEdward Tomasz Napierala return (0); 829ec125fbbSEdward Tomasz Napierala } 830ec125fbbSEdward Tomasz Napierala 831ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 832ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 833ec125fbbSEdward Tomasz Napierala return (0); 834ec125fbbSEdward Tomasz Napierala } 835ec125fbbSEdward Tomasz Napierala 836ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 837ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 838ec125fbbSEdward Tomasz Napierala return (0); 839ec125fbbSEdward Tomasz Napierala } 840ec125fbbSEdward Tomasz Napierala 841ec125fbbSEdward Tomasz Napierala return (1); 842ec125fbbSEdward Tomasz Napierala } 843ec125fbbSEdward Tomasz Napierala 844ec125fbbSEdward Tomasz Napierala static int 845ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 846ec125fbbSEdward Tomasz Napierala { 847ec125fbbSEdward Tomasz Napierala int i; 848ec125fbbSEdward Tomasz Napierala 849ec125fbbSEdward Tomasz Napierala if (value == NULL) 850ec125fbbSEdward Tomasz Napierala return (EINVAL); 851ec125fbbSEdward Tomasz Napierala 852ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 853ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 854ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 855ec125fbbSEdward Tomasz Napierala return (0); 856ec125fbbSEdward Tomasz Napierala } 857ec125fbbSEdward Tomasz Napierala } 858ec125fbbSEdward Tomasz Napierala 859ec125fbbSEdward Tomasz Napierala return (EINVAL); 860ec125fbbSEdward Tomasz Napierala } 861ec125fbbSEdward Tomasz Napierala 862ec125fbbSEdward Tomasz Napierala static int 863ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 864ec125fbbSEdward Tomasz Napierala { 865ec125fbbSEdward Tomasz Napierala char *end; 866ec125fbbSEdward Tomasz Napierala 867ec125fbbSEdward Tomasz Napierala if (str == NULL) 868ec125fbbSEdward Tomasz Napierala return (EINVAL); 869ec125fbbSEdward Tomasz Napierala 870ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 871ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 872ec125fbbSEdward Tomasz Napierala return (EINVAL); 873ec125fbbSEdward Tomasz Napierala 874ec125fbbSEdward Tomasz Napierala return (0); 875ec125fbbSEdward Tomasz Napierala } 876ec125fbbSEdward Tomasz Napierala 877ec125fbbSEdward Tomasz Napierala static int 878ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 879ec125fbbSEdward Tomasz Napierala { 880ec125fbbSEdward Tomasz Napierala char *end; 881ec125fbbSEdward Tomasz Napierala 882ec125fbbSEdward Tomasz Napierala if (str == NULL) 883ec125fbbSEdward Tomasz Napierala return (EINVAL); 884ec125fbbSEdward Tomasz Napierala 885ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 886ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 887ec125fbbSEdward Tomasz Napierala return (EINVAL); 888ec125fbbSEdward Tomasz Napierala 889b450d447SEdward Tomasz Napierala if (*value < 0) 890b450d447SEdward Tomasz Napierala return (ERANGE); 891b450d447SEdward Tomasz Napierala 892ec125fbbSEdward Tomasz Napierala return (0); 893ec125fbbSEdward Tomasz Napierala } 894ec125fbbSEdward Tomasz Napierala 895ec125fbbSEdward Tomasz Napierala /* 896ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 897ec125fbbSEdward Tomasz Napierala */ 898ec125fbbSEdward Tomasz Napierala static void 899ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 900ec125fbbSEdward Tomasz Napierala { 901ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 902ec125fbbSEdward Tomasz Napierala 9034b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 904ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 905ec125fbbSEdward Tomasz Napierala 906ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 907ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 908ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 909ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 910ec125fbbSEdward Tomasz Napierala 9114c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 912ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 9134c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 914ec125fbbSEdward Tomasz Napierala } 915ec125fbbSEdward Tomasz Napierala 916ec125fbbSEdward Tomasz Napierala static int 917ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 918ec125fbbSEdward Tomasz Napierala { 919ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 920ec125fbbSEdward Tomasz Napierala 9214b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 922ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 9234c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 924ec125fbbSEdward Tomasz Napierala 925ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 926ec125fbbSEdward Tomasz Napierala if (link == NULL) 927ec125fbbSEdward Tomasz Napierala return (ENOMEM); 928ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 929ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 930ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 931ec125fbbSEdward Tomasz Napierala 932ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 933ec125fbbSEdward Tomasz Napierala return (0); 934ec125fbbSEdward Tomasz Napierala } 935ec125fbbSEdward Tomasz Napierala 936ec125fbbSEdward Tomasz Napierala /* 937ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 938ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 939ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 940ec125fbbSEdward Tomasz Napierala */ 941ec125fbbSEdward Tomasz Napierala static int 942ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 943ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 944ec125fbbSEdward Tomasz Napierala { 945ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 946c1a43e73SEdward Tomasz Napierala int removed = 0; 947ec125fbbSEdward Tomasz Napierala 9484b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9494c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 950ec125fbbSEdward Tomasz Napierala 951ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 952ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 953ec125fbbSEdward Tomasz Napierala continue; 954ec125fbbSEdward Tomasz Napierala 955ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 956ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 957ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 958ec125fbbSEdward Tomasz Napierala removed++; 959ec125fbbSEdward Tomasz Napierala } 960ec125fbbSEdward Tomasz Napierala return (removed); 961ec125fbbSEdward Tomasz Napierala } 962ec125fbbSEdward Tomasz Napierala 963ec125fbbSEdward Tomasz Napierala static void 964ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 965ec125fbbSEdward Tomasz Napierala { 966ec125fbbSEdward Tomasz Napierala 9674b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9684b5c9cf6SEdward Tomasz Napierala 969ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 970ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 971ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 972a7ad07bfSEdward Tomasz Napierala break; 973ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 974a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 975a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 976ec125fbbSEdward Tomasz Napierala break; 977ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 978ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 979ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 980ec125fbbSEdward Tomasz Napierala break; 981ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 982415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 983415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 984ec125fbbSEdward Tomasz Napierala break; 985ec125fbbSEdward Tomasz Napierala default: 986ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 987ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 988ec125fbbSEdward Tomasz Napierala } 989ec125fbbSEdward Tomasz Napierala } 990ec125fbbSEdward Tomasz Napierala 991ec125fbbSEdward Tomasz Napierala static void 992ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 993ec125fbbSEdward Tomasz Napierala { 994ec125fbbSEdward Tomasz Napierala 9954b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9964b5c9cf6SEdward Tomasz Napierala 997ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 998ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 999ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1000a7ad07bfSEdward Tomasz Napierala break; 1001ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1002a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 1003a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 1004ec125fbbSEdward Tomasz Napierala break; 1005ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1006ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 1007ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 1008ec125fbbSEdward Tomasz Napierala break; 1009ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1010415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 1011415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 1012ec125fbbSEdward Tomasz Napierala break; 1013ec125fbbSEdward Tomasz Napierala default: 1014ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 1015ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1016ec125fbbSEdward Tomasz Napierala } 1017ec125fbbSEdward Tomasz Napierala } 1018ec125fbbSEdward Tomasz Napierala 1019ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1020ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 1021ec125fbbSEdward Tomasz Napierala { 1022ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1023ec125fbbSEdward Tomasz Napierala 10244b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10254b5c9cf6SEdward Tomasz Napierala 1026ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 1027ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1028ec125fbbSEdward Tomasz Napierala return (NULL); 1029ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1030ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1031ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1032415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1033a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1034ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1035ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1036ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1037ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1038ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 1039ec125fbbSEdward Tomasz Napierala 1040ec125fbbSEdward Tomasz Napierala return (rule); 1041ec125fbbSEdward Tomasz Napierala } 1042ec125fbbSEdward Tomasz Napierala 1043ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1044ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 1045ec125fbbSEdward Tomasz Napierala { 1046ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 1047ec125fbbSEdward Tomasz Napierala 10484b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10494b5c9cf6SEdward Tomasz Napierala 1050ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 1051ec125fbbSEdward Tomasz Napierala if (copy == NULL) 1052ec125fbbSEdward Tomasz Napierala return (NULL); 1053ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 1054ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 1055ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 1056415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 1057a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 1058ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 1059ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 1060ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 1061ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 1062ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 1063ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 1064ec125fbbSEdward Tomasz Napierala 1065ec125fbbSEdward Tomasz Napierala return (copy); 1066ec125fbbSEdward Tomasz Napierala } 1067ec125fbbSEdward Tomasz Napierala 1068ec125fbbSEdward Tomasz Napierala void 1069ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 1070ec125fbbSEdward Tomasz Napierala { 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 refcount_acquire(&rule->rr_refcount); 1076ec125fbbSEdward Tomasz Napierala } 1077ec125fbbSEdward Tomasz Napierala 1078ec125fbbSEdward Tomasz Napierala static void 1079ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 1080ec125fbbSEdward Tomasz Napierala { 1081ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1082ec125fbbSEdward Tomasz Napierala 1083ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 1084ec125fbbSEdward Tomasz Napierala 10854b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1086ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 1087ec125fbbSEdward Tomasz Napierala 1088ec125fbbSEdward Tomasz Napierala /* 1089ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 1090ec125fbbSEdward Tomasz Napierala */ 1091ec125fbbSEdward Tomasz Napierala 1092ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 1093ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 1094ec125fbbSEdward Tomasz Napierala } 1095ec125fbbSEdward Tomasz Napierala 1096ec125fbbSEdward Tomasz Napierala void 1097ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 1098ec125fbbSEdward Tomasz Napierala { 1099ec125fbbSEdward Tomasz Napierala 11004b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1101ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1102ec125fbbSEdward Tomasz Napierala 1103ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 1104ec125fbbSEdward Tomasz Napierala /* 1105ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 1106ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 1107ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 1108ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 1109ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 1110ec125fbbSEdward Tomasz Napierala */ 1111ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 1112ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 1113ec125fbbSEdward Tomasz Napierala } 1114ec125fbbSEdward Tomasz Napierala } 1115ec125fbbSEdward Tomasz Napierala 1116ec125fbbSEdward Tomasz Napierala static int 1117ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 1118ec125fbbSEdward Tomasz Napierala { 1119ec125fbbSEdward Tomasz Napierala 11204b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11214b5c9cf6SEdward Tomasz Napierala 1122ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1123ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1124ec125fbbSEdward Tomasz Napierala return (0); 1125ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1126ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1127ec125fbbSEdward Tomasz Napierala return (0); 1128ec125fbbSEdward Tomasz Napierala break; 1129ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1130ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1131ec125fbbSEdward Tomasz Napierala return (0); 1132ec125fbbSEdward Tomasz Napierala break; 1133ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1134415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1135ec125fbbSEdward Tomasz Napierala return (0); 1136ec125fbbSEdward Tomasz Napierala break; 1137ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1138a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1139ec125fbbSEdward Tomasz Napierala return (0); 1140ec125fbbSEdward Tomasz Napierala break; 1141ec125fbbSEdward Tomasz Napierala default: 1142ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 1143ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1144ec125fbbSEdward Tomasz Napierala } 1145ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 1146ec125fbbSEdward Tomasz Napierala return (0); 1147ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 1148ec125fbbSEdward Tomasz Napierala return (0); 1149ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 1150ec125fbbSEdward Tomasz Napierala return (0); 1151ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 1152ec125fbbSEdward Tomasz Napierala return (0); 1153ec125fbbSEdward Tomasz Napierala 1154ec125fbbSEdward Tomasz Napierala return (1); 1155ec125fbbSEdward Tomasz Napierala } 1156ec125fbbSEdward Tomasz Napierala 1157ec125fbbSEdward Tomasz Napierala static int 1158ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 1159ec125fbbSEdward Tomasz Napierala { 1160c1a43e73SEdward Tomasz Napierala struct rctl_rule *rule; 1161ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 1162ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 1163ec125fbbSEdward Tomasz Napierala id_t id; 1164c1a43e73SEdward Tomasz Napierala int error = 0; 1165ec125fbbSEdward Tomasz Napierala 11664b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11674b5c9cf6SEdward Tomasz Napierala 1168ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 1169ec125fbbSEdward Tomasz Napierala 1170ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 1171ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 1172ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 1173ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 1174ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 1175ec125fbbSEdward Tomasz Napierala perstr = rulestr; 1176ec125fbbSEdward Tomasz Napierala 1177ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 1178ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1179ec125fbbSEdward Tomasz Napierala else { 1180ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 1181ec125fbbSEdward Tomasz Napierala if (error != 0) 1182ec125fbbSEdward Tomasz Napierala goto out; 1183ec125fbbSEdward Tomasz Napierala } 1184ec125fbbSEdward Tomasz Napierala 1185ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 1186ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1187ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1188415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1189a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1190ec125fbbSEdward Tomasz Napierala } else { 1191ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1192ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1193ec125fbbSEdward Tomasz Napierala error = EINVAL; 1194ec125fbbSEdward Tomasz Napierala goto out; 1195ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1196ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1197ec125fbbSEdward Tomasz Napierala if (error != 0) 1198ec125fbbSEdward Tomasz Napierala goto out; 1199ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1200ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 1201ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 1202ec125fbbSEdward Tomasz Napierala error = ESRCH; 1203ec125fbbSEdward Tomasz Napierala goto out; 1204ec125fbbSEdward Tomasz Napierala } 1205ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 1206ec125fbbSEdward Tomasz Napierala break; 1207ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1208ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1209ec125fbbSEdward Tomasz Napierala if (error != 0) 1210ec125fbbSEdward Tomasz Napierala goto out; 1211ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 1212ec125fbbSEdward Tomasz Napierala break; 1213ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1214415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 1215ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 1216415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 1217ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 1218ec125fbbSEdward Tomasz Napierala goto out; 1219ec125fbbSEdward Tomasz Napierala } 1220ec125fbbSEdward Tomasz Napierala break; 1221ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1222a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 1223a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 1224a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 1225a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 1226ec125fbbSEdward Tomasz Napierala goto out; 1227ec125fbbSEdward Tomasz Napierala } 1228ec125fbbSEdward Tomasz Napierala break; 1229ec125fbbSEdward Tomasz Napierala default: 1230ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 1231ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1232ec125fbbSEdward Tomasz Napierala } 1233ec125fbbSEdward Tomasz Napierala } 1234ec125fbbSEdward Tomasz Napierala 1235ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1236ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1237ec125fbbSEdward Tomasz Napierala else { 1238ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1239ec125fbbSEdward Tomasz Napierala resourcenames); 1240ec125fbbSEdward Tomasz Napierala if (error != 0) 1241ec125fbbSEdward Tomasz Napierala goto out; 1242ec125fbbSEdward Tomasz Napierala } 1243ec125fbbSEdward Tomasz Napierala 1244ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1245ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1246ec125fbbSEdward Tomasz Napierala else { 1247ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1248ec125fbbSEdward Tomasz Napierala if (error != 0) 1249ec125fbbSEdward Tomasz Napierala goto out; 1250ec125fbbSEdward Tomasz Napierala } 1251ec125fbbSEdward Tomasz Napierala 1252ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1253ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1254ec125fbbSEdward Tomasz Napierala else { 1255ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1256ec125fbbSEdward Tomasz Napierala if (error != 0) 1257ec125fbbSEdward Tomasz Napierala goto out; 1258b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1259b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1260b450d447SEdward Tomasz Napierala error = ERANGE; 1261b450d447SEdward Tomasz Napierala goto out; 1262b450d447SEdward Tomasz Napierala } 1263cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1264ec125fbbSEdward Tomasz Napierala } 1265b450d447SEdward Tomasz Napierala } 1266ec125fbbSEdward Tomasz Napierala 1267ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1268ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1269ec125fbbSEdward Tomasz Napierala else { 1270ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1271ec125fbbSEdward Tomasz Napierala if (error != 0) 1272ec125fbbSEdward Tomasz Napierala goto out; 1273ec125fbbSEdward Tomasz Napierala } 1274ec125fbbSEdward Tomasz Napierala 1275ec125fbbSEdward Tomasz Napierala out: 1276ec125fbbSEdward Tomasz Napierala if (error == 0) 1277ec125fbbSEdward Tomasz Napierala *rulep = rule; 1278ec125fbbSEdward Tomasz Napierala else 1279ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1280ec125fbbSEdward Tomasz Napierala 1281ec125fbbSEdward Tomasz Napierala return (error); 1282ec125fbbSEdward Tomasz Napierala } 1283ec125fbbSEdward Tomasz Napierala 1284ec125fbbSEdward Tomasz Napierala /* 1285ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1286ec125fbbSEdward Tomasz Napierala */ 1287ec125fbbSEdward Tomasz Napierala int 1288ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1289ec125fbbSEdward Tomasz Napierala { 1290ec125fbbSEdward Tomasz Napierala struct proc *p; 1291ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1292ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1293ec125fbbSEdward Tomasz Napierala struct prison *pr; 1294a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1295ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1296ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1297ec125fbbSEdward Tomasz Napierala int match; 1298ec125fbbSEdward Tomasz Napierala 12994b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1300ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1301ec125fbbSEdward Tomasz Napierala 1302ec125fbbSEdward Tomasz Napierala /* 1303ae34b6ffSEdward Tomasz Napierala * Some rules just don't make sense, like "deny" rule for an undeniable 1304ae34b6ffSEdward Tomasz Napierala * resource. The exception are the RSS and %CPU resources - they are 1305ae34b6ffSEdward Tomasz Napierala * not deniable in the racct sense, but the limit is enforced in 1306ae34b6ffSEdward Tomasz Napierala * a different way. 1307ec125fbbSEdward Tomasz Napierala */ 1308ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1309ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DENIABLE(rule->rr_resource) && 1310ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_RSS && 1311ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_PCTCPU) { 1312ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1313ae34b6ffSEdward Tomasz Napierala } 1314ae34b6ffSEdward Tomasz Napierala 1315ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1316ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DECAYING(rule->rr_resource)) { 1317ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1318ae34b6ffSEdward Tomasz Napierala } 1319ae34b6ffSEdward Tomasz Napierala 1320ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1321ae34b6ffSEdward Tomasz Napierala rule->rr_resource == RACCT_PCTCPU) { 1322ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1323ae34b6ffSEdward Tomasz Napierala } 1324ec125fbbSEdward Tomasz Napierala 1325ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 1326ae34b6ffSEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) { 1327ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1328ae34b6ffSEdward Tomasz Napierala } 1329ec125fbbSEdward Tomasz Napierala 1330ec125fbbSEdward Tomasz Napierala /* 1331ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1332ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1333ec125fbbSEdward Tomasz Napierala */ 1334ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1335ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1336ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1337ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1338ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1339ec125fbbSEdward Tomasz Napierala } else 1340ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1341ec125fbbSEdward Tomasz Napierala 1342ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1343ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1344ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1345ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1346ec125fbbSEdward Tomasz Napierala 1347ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1348ec125fbbSEdward Tomasz Napierala /* 1349ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1350ec125fbbSEdward Tomasz Napierala * to do. 1351ec125fbbSEdward Tomasz Napierala */ 1352ec125fbbSEdward Tomasz Napierala return (0); 1353ec125fbbSEdward Tomasz Napierala 1354ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1355ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1356ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1357ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1358ec125fbbSEdward Tomasz Napierala break; 1359ec125fbbSEdward Tomasz Napierala 1360ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1361415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1362ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1363ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1364ec125fbbSEdward Tomasz Napierala break; 1365ec125fbbSEdward Tomasz Napierala 1366ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1367a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1368a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1369a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1370ec125fbbSEdward Tomasz Napierala break; 1371ec125fbbSEdward Tomasz Napierala 1372ec125fbbSEdward Tomasz Napierala default: 1373ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1374ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1375ec125fbbSEdward Tomasz Napierala } 1376ec125fbbSEdward Tomasz Napierala 1377ec125fbbSEdward Tomasz Napierala /* 1378ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1379ec125fbbSEdward Tomasz Napierala * it applies to. 1380ec125fbbSEdward Tomasz Napierala */ 1381ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1382ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1383ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1384ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1385ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1386ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1387ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1388ec125fbbSEdward Tomasz Napierala break; 1389ec125fbbSEdward Tomasz Napierala continue; 1390ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1391415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1392ec125fbbSEdward Tomasz Napierala break; 1393ec125fbbSEdward Tomasz Napierala continue; 1394ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1395ec125fbbSEdward Tomasz Napierala match = 0; 1396ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1397a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1398ec125fbbSEdward Tomasz Napierala match = 1; 1399ec125fbbSEdward Tomasz Napierala break; 1400ec125fbbSEdward Tomasz Napierala } 1401ec125fbbSEdward Tomasz Napierala } 1402ec125fbbSEdward Tomasz Napierala if (match) 1403ec125fbbSEdward Tomasz Napierala break; 1404ec125fbbSEdward Tomasz Napierala continue; 1405ec125fbbSEdward Tomasz Napierala default: 1406ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1407ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1408ec125fbbSEdward Tomasz Napierala } 1409ec125fbbSEdward Tomasz Napierala 1410ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1411ec125fbbSEdward Tomasz Napierala } 1412ec125fbbSEdward Tomasz Napierala 1413ec125fbbSEdward Tomasz Napierala return (0); 1414ec125fbbSEdward Tomasz Napierala } 1415ec125fbbSEdward Tomasz Napierala 1416ec125fbbSEdward Tomasz Napierala static void 141715db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 141815db3c07SEdward Tomasz Napierala { 141915db3c07SEdward Tomasz Napierala 14204c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 142115db3c07SEdward Tomasz Napierala } 142215db3c07SEdward Tomasz Napierala 142315db3c07SEdward Tomasz Napierala static void 142415db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 142515db3c07SEdward Tomasz Napierala { 142615db3c07SEdward Tomasz Napierala 14274c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 142815db3c07SEdward Tomasz Napierala } 142915db3c07SEdward Tomasz Napierala 143015db3c07SEdward Tomasz Napierala static void 1431ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1432ec125fbbSEdward Tomasz Napierala { 1433ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1434ec125fbbSEdward Tomasz Napierala int found = 0; 1435ec125fbbSEdward Tomasz Napierala 14364b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14374c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 14384b5c9cf6SEdward Tomasz Napierala 1439ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1440ec125fbbSEdward Tomasz Napierala 1441ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1442ec125fbbSEdward Tomasz Napierala } 1443ec125fbbSEdward Tomasz Napierala 1444ec125fbbSEdward Tomasz Napierala /* 1445ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1446ec125fbbSEdward Tomasz Napierala */ 1447ec125fbbSEdward Tomasz Napierala int 1448ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1449ec125fbbSEdward Tomasz Napierala { 1450ec125fbbSEdward Tomasz Napierala struct proc *p; 1451c1a43e73SEdward Tomasz Napierala int found = 0; 1452ec125fbbSEdward Tomasz Napierala 14534b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14544b5c9cf6SEdward Tomasz Napierala 1455ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1456ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1457ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 14584c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1459ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 14604c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1461ec125fbbSEdward Tomasz Napierala if (found) 1462ec125fbbSEdward Tomasz Napierala return (0); 1463ec125fbbSEdward Tomasz Napierala return (ESRCH); 1464ec125fbbSEdward Tomasz Napierala } 1465ec125fbbSEdward Tomasz Napierala 146615db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, 146715db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 146815db3c07SEdward Tomasz Napierala filter, (void *)&found); 146915db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, 147015db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 147115db3c07SEdward Tomasz Napierala filter, (void *)&found); 147215db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 147315db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 147415db3c07SEdward Tomasz Napierala filter, (void *)&found); 1475ec125fbbSEdward Tomasz Napierala 1476ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 14774c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1478ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1479ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1480ec125fbbSEdward Tomasz Napierala } 14814c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1482ec125fbbSEdward Tomasz Napierala 1483ec125fbbSEdward Tomasz Napierala if (found) 1484ec125fbbSEdward Tomasz Napierala return (0); 1485ec125fbbSEdward Tomasz Napierala return (ESRCH); 1486ec125fbbSEdward Tomasz Napierala } 1487ec125fbbSEdward Tomasz Napierala 1488ec125fbbSEdward Tomasz Napierala /* 1489ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1490ec125fbbSEdward Tomasz Napierala */ 1491ec125fbbSEdward Tomasz Napierala static void 1492ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1493ec125fbbSEdward Tomasz Napierala { 1494ec125fbbSEdward Tomasz Napierala int64_t amount; 1495ec125fbbSEdward Tomasz Napierala 14964b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14974b5c9cf6SEdward Tomasz Napierala 1498ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1499ec125fbbSEdward Tomasz Napierala 1500ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1501ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1502ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1503ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1504ec125fbbSEdward Tomasz Napierala else 1505ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1506ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1507ec125fbbSEdward Tomasz Napierala break; 1508ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1509ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1510ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1511ec125fbbSEdward Tomasz Napierala else 1512ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1513ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1514ec125fbbSEdward Tomasz Napierala break; 1515ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1516415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1517ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1518ec125fbbSEdward Tomasz Napierala else 1519ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1520415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1521ec125fbbSEdward Tomasz Napierala break; 1522ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1523a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1524ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1525ec125fbbSEdward Tomasz Napierala else 1526ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1527a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1528ec125fbbSEdward Tomasz Napierala break; 1529ec125fbbSEdward Tomasz Napierala default: 1530ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1531ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1532ec125fbbSEdward Tomasz Napierala } 1533ec125fbbSEdward Tomasz Napierala 1534ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1535ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 153685a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 153785a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1538ec125fbbSEdward Tomasz Napierala 1539ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1540ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1541ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1542ec125fbbSEdward Tomasz Napierala amount); 1543ec125fbbSEdward Tomasz Napierala 1544ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1545ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1546ec125fbbSEdward Tomasz Napierala } 1547ec125fbbSEdward Tomasz Napierala 1548ec125fbbSEdward Tomasz Napierala /* 1549ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1550ec125fbbSEdward Tomasz Napierala */ 1551ec125fbbSEdward Tomasz Napierala static int 1552ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1553ec125fbbSEdward Tomasz Napierala { 1554ec125fbbSEdward Tomasz Napierala char *str; 1555c1a43e73SEdward Tomasz Napierala int error; 1556ec125fbbSEdward Tomasz Napierala 15574b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15584b5c9cf6SEdward Tomasz Napierala 1559ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1560ec125fbbSEdward Tomasz Napierala return (EINVAL); 1561ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1562786813aaSEdward Tomasz Napierala return (E2BIG); 1563ec125fbbSEdward Tomasz Napierala 1564ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1565ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1566ec125fbbSEdward Tomasz Napierala if (error != 0) { 1567ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1568ec125fbbSEdward Tomasz Napierala return (error); 1569ec125fbbSEdward Tomasz Napierala } 1570ec125fbbSEdward Tomasz Napierala 1571ec125fbbSEdward Tomasz Napierala *inputstr = str; 1572ec125fbbSEdward Tomasz Napierala 1573ec125fbbSEdward Tomasz Napierala return (0); 1574ec125fbbSEdward Tomasz Napierala } 1575ec125fbbSEdward Tomasz Napierala 1576ec125fbbSEdward Tomasz Napierala /* 1577ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1578ec125fbbSEdward Tomasz Napierala */ 1579ec125fbbSEdward Tomasz Napierala static int 1580ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1581ec125fbbSEdward Tomasz Napierala { 1582ec125fbbSEdward Tomasz Napierala int error; 1583ec125fbbSEdward Tomasz Napierala 15844b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15854b5c9cf6SEdward Tomasz Napierala 1586ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1587ec125fbbSEdward Tomasz Napierala return (0); 1588ec125fbbSEdward Tomasz Napierala 1589ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1590ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1591ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1592ec125fbbSEdward Tomasz Napierala return (ERANGE); 1593ec125fbbSEdward Tomasz Napierala } 1594ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1595ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1596ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1597ec125fbbSEdward Tomasz Napierala return (error); 1598ec125fbbSEdward Tomasz Napierala } 1599ec125fbbSEdward Tomasz Napierala 1600ec125fbbSEdward Tomasz Napierala static struct sbuf * 1601ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1602ec125fbbSEdward Tomasz Napierala { 1603ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1604c1a43e73SEdward Tomasz Napierala int64_t amount; 1605c1a43e73SEdward Tomasz Napierala int i; 1606ec125fbbSEdward Tomasz Napierala 16074b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 16084b5c9cf6SEdward Tomasz Napierala 1609ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1610ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 16114fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1612ec125fbbSEdward Tomasz Napierala continue; 1613ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 161485a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1615cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1616ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1617ec125fbbSEdward Tomasz Napierala } 1618ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1619ec125fbbSEdward Tomasz Napierala return (sb); 1620ec125fbbSEdward Tomasz Napierala } 1621ec125fbbSEdward Tomasz Napierala 1622ec125fbbSEdward Tomasz Napierala int 16238451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1624ec125fbbSEdward Tomasz Napierala { 1625ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1626ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1627ec125fbbSEdward Tomasz Napierala struct proc *p; 1628ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1629ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1630a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1631c1a43e73SEdward Tomasz Napierala char *inputstr; 1632c1a43e73SEdward Tomasz Napierala int error; 1633ec125fbbSEdward Tomasz Napierala 16344b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16354b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16364b5c9cf6SEdward Tomasz Napierala 1637415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1638ec125fbbSEdward Tomasz Napierala if (error != 0) 1639ec125fbbSEdward Tomasz Napierala return (error); 1640ec125fbbSEdward Tomasz Napierala 1641ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1642ec125fbbSEdward Tomasz Napierala if (error != 0) 1643ec125fbbSEdward Tomasz Napierala return (error); 1644ec125fbbSEdward Tomasz Napierala 1645ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1646ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1647ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1648ec125fbbSEdward Tomasz Napierala if (error != 0) { 1649ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1650ec125fbbSEdward Tomasz Napierala return (error); 1651ec125fbbSEdward Tomasz Napierala } 1652ec125fbbSEdward Tomasz Napierala 1653ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1654ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1655ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1656ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1657ec125fbbSEdward Tomasz Napierala error = EINVAL; 1658ec125fbbSEdward Tomasz Napierala goto out; 1659ec125fbbSEdward Tomasz Napierala } 1660ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1661ec125fbbSEdward Tomasz Napierala break; 1662ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1663ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1664ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1665ec125fbbSEdward Tomasz Napierala error = EINVAL; 1666ec125fbbSEdward Tomasz Napierala goto out; 1667ec125fbbSEdward Tomasz Napierala } 1668ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1669ec125fbbSEdward Tomasz Napierala break; 1670ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1671415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1672ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1673ec125fbbSEdward Tomasz Napierala error = EINVAL; 1674ec125fbbSEdward Tomasz Napierala goto out; 1675ec125fbbSEdward Tomasz Napierala } 1676ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1677ec125fbbSEdward Tomasz Napierala break; 1678ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1679a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1680a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1681ec125fbbSEdward Tomasz Napierala error = EINVAL; 1682ec125fbbSEdward Tomasz Napierala goto out; 1683ec125fbbSEdward Tomasz Napierala } 1684a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1685ec125fbbSEdward Tomasz Napierala break; 1686ec125fbbSEdward Tomasz Napierala default: 1687ec125fbbSEdward Tomasz Napierala error = EINVAL; 1688ec125fbbSEdward Tomasz Napierala } 1689ec125fbbSEdward Tomasz Napierala out: 1690ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1691ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1692ec125fbbSEdward Tomasz Napierala if (error != 0) 1693ec125fbbSEdward Tomasz Napierala return (error); 1694ec125fbbSEdward Tomasz Napierala 1695ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1696ec125fbbSEdward Tomasz Napierala 1697ec125fbbSEdward Tomasz Napierala return (error); 1698ec125fbbSEdward Tomasz Napierala } 1699ec125fbbSEdward Tomasz Napierala 1700ec125fbbSEdward Tomasz Napierala static void 1701ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1702ec125fbbSEdward Tomasz Napierala { 1703ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1704ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1705ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1706ec125fbbSEdward Tomasz Napierala 17074b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 17084c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 17094b5c9cf6SEdward Tomasz Napierala 1710ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1711ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1712ec125fbbSEdward Tomasz Napierala continue; 1713ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1714ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1715ec125fbbSEdward Tomasz Napierala } 1716ec125fbbSEdward Tomasz Napierala } 1717ec125fbbSEdward Tomasz Napierala 1718ec125fbbSEdward Tomasz Napierala int 17198451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1720ec125fbbSEdward Tomasz Napierala { 1721ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1722ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1723ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1724ec125fbbSEdward Tomasz Napierala struct proc *p; 1725c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1726c1a43e73SEdward Tomasz Napierala size_t bufsize; 1727c1a43e73SEdward Tomasz Napierala int error; 1728ec125fbbSEdward Tomasz Napierala 17294b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17304b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17314b5c9cf6SEdward Tomasz Napierala 1732ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1733ec125fbbSEdward Tomasz Napierala if (error != 0) 1734ec125fbbSEdward Tomasz Napierala return (error); 1735ec125fbbSEdward Tomasz Napierala 1736ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1737ec125fbbSEdward Tomasz Napierala if (error != 0) 1738ec125fbbSEdward Tomasz Napierala return (error); 1739ec125fbbSEdward Tomasz Napierala 1740ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1741ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1742ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1743ec125fbbSEdward Tomasz Napierala if (error != 0) { 1744ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1745ec125fbbSEdward Tomasz Napierala return (error); 1746ec125fbbSEdward Tomasz Napierala } 1747ec125fbbSEdward Tomasz Napierala 17482b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 17492b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 17502b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 17512b4035eeSEdward Tomasz Napierala return (E2BIG); 17522b4035eeSEdward Tomasz Napierala } 17532b4035eeSEdward Tomasz Napierala 1754ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1755ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1756ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1757ec125fbbSEdward Tomasz Napierala 1758ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 17594c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1760ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1761ec125fbbSEdward Tomasz Napierala /* 1762ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1763ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1764ec125fbbSEdward Tomasz Napierala */ 1765ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1766ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1767ec125fbbSEdward Tomasz Napierala continue; 1768ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1769ec125fbbSEdward Tomasz Napierala continue; 1770ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1771ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1772ec125fbbSEdward Tomasz Napierala } 17734c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 1774ec125fbbSEdward Tomasz Napierala } 1775ec125fbbSEdward Tomasz Napierala 177615db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, 177715db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 177815db3c07SEdward Tomasz Napierala filter, sb); 177915db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, 178015db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 178115db3c07SEdward Tomasz Napierala filter, sb); 178215db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 178315db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 178415db3c07SEdward Tomasz Napierala filter, sb); 1785ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 17862b4035eeSEdward Tomasz Napierala error = ERANGE; 17872b4035eeSEdward Tomasz Napierala goto out; 1788ec125fbbSEdward Tomasz Napierala } 1789ec125fbbSEdward Tomasz Napierala 1790ec125fbbSEdward Tomasz Napierala /* 1791ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1792ec125fbbSEdward Tomasz Napierala */ 1793ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1794ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1795ec125fbbSEdward Tomasz Napierala 1796ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 17972b4035eeSEdward Tomasz Napierala out: 1798ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1799ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1800ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1801ec125fbbSEdward Tomasz Napierala return (error); 1802ec125fbbSEdward Tomasz Napierala } 1803ec125fbbSEdward Tomasz Napierala 1804ec125fbbSEdward Tomasz Napierala int 18058451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1806ec125fbbSEdward Tomasz Napierala { 1807ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1808ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1809ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1810c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1811c1a43e73SEdward Tomasz Napierala size_t bufsize; 1812c1a43e73SEdward Tomasz Napierala int error; 1813ec125fbbSEdward Tomasz Napierala 18144b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18154b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18164b5c9cf6SEdward Tomasz Napierala 1817ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1818ec125fbbSEdward Tomasz Napierala if (error != 0) 1819ec125fbbSEdward Tomasz Napierala return (error); 1820ec125fbbSEdward Tomasz Napierala 1821ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1822ec125fbbSEdward Tomasz Napierala if (error != 0) 1823ec125fbbSEdward Tomasz Napierala return (error); 1824ec125fbbSEdward Tomasz Napierala 1825ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1826ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1827ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1828ec125fbbSEdward Tomasz Napierala if (error != 0) { 1829ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1830ec125fbbSEdward Tomasz Napierala return (error); 1831ec125fbbSEdward Tomasz Napierala } 1832ec125fbbSEdward Tomasz Napierala 1833ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1834ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1835ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1836ec125fbbSEdward Tomasz Napierala return (EINVAL); 1837ec125fbbSEdward Tomasz Napierala } 1838ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1839ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1840ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1841ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1842ec125fbbSEdward Tomasz Napierala } 1843ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1844ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1845ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1846ec125fbbSEdward Tomasz Napierala return (EINVAL); 1847ec125fbbSEdward Tomasz Napierala } 1848ec125fbbSEdward Tomasz Napierala 18492b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 18502b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 18512b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 18522b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 18532b4035eeSEdward Tomasz Napierala return (E2BIG); 18542b4035eeSEdward Tomasz Napierala } 18552b4035eeSEdward Tomasz Napierala 1856ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1857ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1858ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1859ec125fbbSEdward Tomasz Napierala 18604c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1861ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1862ec125fbbSEdward Tomasz Napierala rrl_next) { 1863ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1864ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1865ec125fbbSEdward Tomasz Napierala } 18664c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 1867ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 18682b4035eeSEdward Tomasz Napierala error = ERANGE; 18692b4035eeSEdward Tomasz Napierala goto out; 1870ec125fbbSEdward Tomasz Napierala } 1871ec125fbbSEdward Tomasz Napierala 1872ec125fbbSEdward Tomasz Napierala /* 1873ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1874ec125fbbSEdward Tomasz Napierala */ 1875ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1876ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1877ec125fbbSEdward Tomasz Napierala 1878ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 18792b4035eeSEdward Tomasz Napierala out: 1880ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1881ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1882ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1883ec125fbbSEdward Tomasz Napierala return (error); 1884ec125fbbSEdward Tomasz Napierala } 1885ec125fbbSEdward Tomasz Napierala 1886ec125fbbSEdward Tomasz Napierala int 18878451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1888ec125fbbSEdward Tomasz Napierala { 1889ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1890ec125fbbSEdward Tomasz Napierala char *inputstr; 1891c1a43e73SEdward Tomasz Napierala int error; 1892ec125fbbSEdward Tomasz Napierala 18934b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18944b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18954b5c9cf6SEdward Tomasz Napierala 1896ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1897ec125fbbSEdward Tomasz Napierala if (error != 0) 1898ec125fbbSEdward Tomasz Napierala return (error); 1899ec125fbbSEdward Tomasz Napierala 1900ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1901ec125fbbSEdward Tomasz Napierala if (error != 0) 1902ec125fbbSEdward Tomasz Napierala return (error); 1903ec125fbbSEdward Tomasz Napierala 1904ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1905ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1906ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1907ec125fbbSEdward Tomasz Napierala if (error != 0) { 1908ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1909ec125fbbSEdward Tomasz Napierala return (error); 1910ec125fbbSEdward Tomasz Napierala } 1911ec125fbbSEdward Tomasz Napierala /* 1912ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1913ec125fbbSEdward Tomasz Napierala */ 1914ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1915ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1916ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1917ec125fbbSEdward Tomasz Napierala 1918ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1919ec125fbbSEdward Tomasz Napierala error = EINVAL; 1920ec125fbbSEdward Tomasz Napierala goto out; 1921ec125fbbSEdward Tomasz Napierala } 1922ec125fbbSEdward Tomasz Napierala 1923ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1924ec125fbbSEdward Tomasz Napierala 1925ec125fbbSEdward Tomasz Napierala out: 1926ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1927ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1928ec125fbbSEdward Tomasz Napierala return (error); 1929ec125fbbSEdward Tomasz Napierala } 1930ec125fbbSEdward Tomasz Napierala 1931ec125fbbSEdward Tomasz Napierala int 19328451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1933ec125fbbSEdward Tomasz Napierala { 1934ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1935ec125fbbSEdward Tomasz Napierala char *inputstr; 1936c1a43e73SEdward Tomasz Napierala int error; 1937ec125fbbSEdward Tomasz Napierala 19384b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19394b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 19404b5c9cf6SEdward Tomasz Napierala 1941ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1942ec125fbbSEdward Tomasz Napierala if (error != 0) 1943ec125fbbSEdward Tomasz Napierala return (error); 1944ec125fbbSEdward Tomasz Napierala 1945ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1946ec125fbbSEdward Tomasz Napierala if (error != 0) 1947ec125fbbSEdward Tomasz Napierala return (error); 1948ec125fbbSEdward Tomasz Napierala 1949ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1950ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1951ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1952ec125fbbSEdward Tomasz Napierala if (error != 0) { 1953ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1954ec125fbbSEdward Tomasz Napierala return (error); 1955ec125fbbSEdward Tomasz Napierala } 1956ec125fbbSEdward Tomasz Napierala 1957ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1958ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1959ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1960ec125fbbSEdward Tomasz Napierala 1961ec125fbbSEdward Tomasz Napierala return (error); 1962ec125fbbSEdward Tomasz Napierala } 1963ec125fbbSEdward Tomasz Napierala 1964ec125fbbSEdward Tomasz Napierala /* 1965ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1966ec125fbbSEdward Tomasz Napierala */ 1967ec125fbbSEdward Tomasz Napierala void 1968ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1969ec125fbbSEdward Tomasz Napierala { 1970c1a43e73SEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1971ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1972ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1973ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1974a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1975c1a43e73SEdward Tomasz Napierala int rulecnt, i; 1976ec125fbbSEdward Tomasz Napierala 19774b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 19784b5c9cf6SEdward Tomasz Napierala 1979ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1980ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1981a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1982ec125fbbSEdward Tomasz Napierala 1983ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1984ec125fbbSEdward Tomasz Napierala 1985ec125fbbSEdward Tomasz Napierala again: 1986ec125fbbSEdward Tomasz Napierala /* 1987ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1988ec125fbbSEdward Tomasz Napierala * credentials. 1989ec125fbbSEdward Tomasz Napierala */ 1990ec125fbbSEdward Tomasz Napierala rulecnt = 0; 19914c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1992ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1993ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1994ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1995ec125fbbSEdward Tomasz Napierala rulecnt++; 1996ec125fbbSEdward Tomasz Napierala } 1997ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1998ec125fbbSEdward Tomasz Napierala rulecnt++; 1999ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 2000ec125fbbSEdward Tomasz Napierala rulecnt++; 2001a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 2002ec125fbbSEdward Tomasz Napierala rulecnt++; 20034c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 2004ec125fbbSEdward Tomasz Napierala 2005ec125fbbSEdward Tomasz Napierala /* 2006ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 2007ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 2008ec125fbbSEdward Tomasz Napierala */ 2009ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 2010ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 2011ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 2012ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 2013ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 2014ec125fbbSEdward Tomasz Napierala } 2015ec125fbbSEdward Tomasz Napierala 2016ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2017ec125fbbSEdward Tomasz Napierala 2018ec125fbbSEdward Tomasz Napierala /* 2019ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 2020ec125fbbSEdward Tomasz Napierala */ 20214c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 2022ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 2023ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2024ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2025ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2026ec125fbbSEdward Tomasz Napierala goto goaround; 2027ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2028ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2029ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2030ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2031ec125fbbSEdward Tomasz Napierala rulecnt--; 2032ec125fbbSEdward Tomasz Napierala } 2033ec125fbbSEdward Tomasz Napierala } 2034ec125fbbSEdward Tomasz Napierala 2035ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 2036ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2037ec125fbbSEdward Tomasz Napierala goto goaround; 2038ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2039ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2040ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2041ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2042ec125fbbSEdward Tomasz Napierala rulecnt--; 2043ec125fbbSEdward Tomasz Napierala } 2044ec125fbbSEdward Tomasz Napierala 2045ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 2046ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2047ec125fbbSEdward Tomasz Napierala goto goaround; 2048ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2049ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2050ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2051ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2052ec125fbbSEdward Tomasz Napierala rulecnt--; 2053ec125fbbSEdward Tomasz Napierala } 2054ec125fbbSEdward Tomasz Napierala 2055a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 2056ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2057ec125fbbSEdward Tomasz Napierala goto goaround; 2058ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2059ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2060ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2061ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2062ec125fbbSEdward Tomasz Napierala rulecnt--; 2063ec125fbbSEdward Tomasz Napierala } 2064ec125fbbSEdward Tomasz Napierala 2065ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 2066ec125fbbSEdward Tomasz Napierala /* 2067ec125fbbSEdward Tomasz Napierala * Free the old rule list. 2068ec125fbbSEdward Tomasz Napierala */ 2069ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 2070ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 2071ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2072ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2073ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2074ec125fbbSEdward Tomasz Napierala } 2075ec125fbbSEdward Tomasz Napierala 2076ec125fbbSEdward Tomasz Napierala /* 2077ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 2078ec125fbbSEdward Tomasz Napierala * 2079ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 2080ec125fbbSEdward Tomasz Napierala * of iterating here? 2081ec125fbbSEdward Tomasz Napierala */ 2082ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2083ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2084ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2085ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 2086ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 2087ec125fbbSEdward Tomasz Napierala } 2088ec125fbbSEdward Tomasz Napierala 20894c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2090ec125fbbSEdward Tomasz Napierala 2091ec125fbbSEdward Tomasz Napierala return; 2092ec125fbbSEdward Tomasz Napierala } 2093ec125fbbSEdward Tomasz Napierala 2094ec125fbbSEdward Tomasz Napierala goaround: 20954c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2096ec125fbbSEdward Tomasz Napierala 2097ec125fbbSEdward Tomasz Napierala /* 2098ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 2099ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 2100ec125fbbSEdward Tomasz Napierala */ 2101ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2102ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2103ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2104ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 2105ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 2106ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 2107ec125fbbSEdward Tomasz Napierala } 2108ec125fbbSEdward Tomasz Napierala 2109ec125fbbSEdward Tomasz Napierala goto again; 2110ec125fbbSEdward Tomasz Napierala } 2111ec125fbbSEdward Tomasz Napierala 2112ec125fbbSEdward Tomasz Napierala /* 2113ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 2114ec125fbbSEdward Tomasz Napierala */ 2115ec125fbbSEdward Tomasz Napierala int 2116ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 2117ec125fbbSEdward Tomasz Napierala { 2118ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 2119c1a43e73SEdward Tomasz Napierala struct rctl_rule_link *link; 2120c1a43e73SEdward Tomasz Napierala int error; 2121ec125fbbSEdward Tomasz Napierala 2122ec125fbbSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 2123ec125fbbSEdward Tomasz Napierala 21244b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 21250b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 2126ec125fbbSEdward Tomasz Napierala 21274c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 2128ec125fbbSEdward Tomasz Napierala 2129ec125fbbSEdward Tomasz Napierala /* 2130ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 2131ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 2132ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 2133ec125fbbSEdward Tomasz Napierala */ 2134ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 2135ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2136ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2137ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 2138ec125fbbSEdward Tomasz Napierala if (rule == NULL) 2139ec125fbbSEdward Tomasz Napierala goto fail; 2140ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 2141ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 2142ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 2143ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2144ec125fbbSEdward Tomasz Napierala rule); 2145ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 2146ec125fbbSEdward Tomasz Napierala if (error != 0) 2147ec125fbbSEdward Tomasz Napierala goto fail; 2148ec125fbbSEdward Tomasz Napierala } else { 2149ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2150ec125fbbSEdward Tomasz Napierala link->rrl_rule); 2151ec125fbbSEdward Tomasz Napierala if (error != 0) 2152ec125fbbSEdward Tomasz Napierala goto fail; 2153ec125fbbSEdward Tomasz Napierala } 2154ec125fbbSEdward Tomasz Napierala } 2155ec125fbbSEdward Tomasz Napierala 21564c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2157ec125fbbSEdward Tomasz Napierala return (0); 2158ec125fbbSEdward Tomasz Napierala 2159ec125fbbSEdward Tomasz Napierala fail: 2160ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 2161ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 2162ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2163ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2164ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2165ec125fbbSEdward Tomasz Napierala } 21664c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2167ec125fbbSEdward Tomasz Napierala return (EAGAIN); 2168ec125fbbSEdward Tomasz Napierala } 2169ec125fbbSEdward Tomasz Napierala 2170ec125fbbSEdward Tomasz Napierala /* 2171ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 2172ec125fbbSEdward Tomasz Napierala */ 2173ec125fbbSEdward Tomasz Napierala void 2174ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 2175ec125fbbSEdward Tomasz Napierala { 2176ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 2177ec125fbbSEdward Tomasz Napierala 21784b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 21794b5c9cf6SEdward Tomasz Napierala 21804c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 2181ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 2182ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 2183ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2184ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2185ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2186ec125fbbSEdward Tomasz Napierala } 21874c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2188ec125fbbSEdward Tomasz Napierala } 2189ec125fbbSEdward Tomasz Napierala 2190ec125fbbSEdward Tomasz Napierala static void 2191ec125fbbSEdward Tomasz Napierala rctl_init(void) 2192ec125fbbSEdward Tomasz Napierala { 2193ec125fbbSEdward Tomasz Napierala 21944b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 21954b5c9cf6SEdward Tomasz Napierala return; 21964b5c9cf6SEdward Tomasz Napierala 2197c1a43e73SEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 219823e6fff2SEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 2199ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 2200ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 220123e6fff2SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2202ae34b6ffSEdward Tomasz Napierala 22038bd8c8f1SEdward Tomasz Napierala /* 22048bd8c8f1SEdward Tomasz Napierala * Set default values, making sure not to overwrite the ones 22058bd8c8f1SEdward Tomasz Napierala * fetched from tunables. Most of those could be set at the 22068bd8c8f1SEdward Tomasz Napierala * declaration, except for the rctl_throttle_max - we cannot 22078bd8c8f1SEdward Tomasz Napierala * set it there due to hz not being compile time constant. 22088bd8c8f1SEdward Tomasz Napierala */ 22098bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_min < 1) 2210ae34b6ffSEdward Tomasz Napierala rctl_throttle_min = 1; 22118bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_max < rctl_throttle_min) 2212ae34b6ffSEdward Tomasz Napierala rctl_throttle_max = 2 * hz; 22138bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct < 0) 2214ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct = 100; 22158bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct2 < 0) 2216ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct2 = 100; 2217ec125fbbSEdward Tomasz Napierala } 2218ec125fbbSEdward Tomasz Napierala 2219ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 2220ec125fbbSEdward Tomasz Napierala 2221ec125fbbSEdward Tomasz Napierala int 22228451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 2223ec125fbbSEdward Tomasz Napierala { 2224ec125fbbSEdward Tomasz Napierala 2225ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2226ec125fbbSEdward Tomasz Napierala } 2227ec125fbbSEdward Tomasz Napierala 2228ec125fbbSEdward Tomasz Napierala int 22298451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 2230ec125fbbSEdward Tomasz Napierala { 2231ec125fbbSEdward Tomasz Napierala 2232ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2233ec125fbbSEdward Tomasz Napierala } 2234ec125fbbSEdward Tomasz Napierala 2235ec125fbbSEdward Tomasz Napierala int 22368451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 2237ec125fbbSEdward Tomasz Napierala { 2238ec125fbbSEdward Tomasz Napierala 2239ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2240ec125fbbSEdward Tomasz Napierala } 2241ec125fbbSEdward Tomasz Napierala 2242ec125fbbSEdward Tomasz Napierala int 22438451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 2244ec125fbbSEdward Tomasz Napierala { 2245ec125fbbSEdward Tomasz Napierala 2246ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2247ec125fbbSEdward Tomasz Napierala } 2248ec125fbbSEdward Tomasz Napierala 2249ec125fbbSEdward Tomasz Napierala int 22508451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 2251ec125fbbSEdward Tomasz Napierala { 2252ec125fbbSEdward Tomasz Napierala 2253ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2254ec125fbbSEdward Tomasz Napierala } 2255ec125fbbSEdward Tomasz Napierala 2256ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 2257