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_link_zone; 214ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_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 { 2328bd8c8f1SEdward Tomasz Napierala int val = rctl_throttle_min; 2338bd8c8f1SEdward Tomasz Napierala int error; 2348bd8c8f1SEdward Tomasz Napierala 2358bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2368bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2378bd8c8f1SEdward Tomasz Napierala return (error); 2388bd8c8f1SEdward Tomasz Napierala if (val < 1 || val > rctl_throttle_max) 2398bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2408bd8c8f1SEdward Tomasz Napierala 2418bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2428bd8c8f1SEdward Tomasz Napierala rctl_throttle_min = val; 2438bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2448bd8c8f1SEdward Tomasz Napierala 2458bd8c8f1SEdward Tomasz Napierala return (0); 2468bd8c8f1SEdward Tomasz Napierala } 2478bd8c8f1SEdward Tomasz Napierala 2488bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS) 2498bd8c8f1SEdward Tomasz Napierala { 2508bd8c8f1SEdward Tomasz Napierala int val = rctl_throttle_max; 2518bd8c8f1SEdward Tomasz Napierala int error; 2528bd8c8f1SEdward Tomasz Napierala 2538bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2548bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2558bd8c8f1SEdward Tomasz Napierala return (error); 2568bd8c8f1SEdward Tomasz Napierala if (val < rctl_throttle_min) 2578bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2588bd8c8f1SEdward Tomasz Napierala 2598bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2608bd8c8f1SEdward Tomasz Napierala rctl_throttle_max = val; 2618bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2628bd8c8f1SEdward Tomasz Napierala 2638bd8c8f1SEdward Tomasz Napierala return (0); 2648bd8c8f1SEdward Tomasz Napierala } 2658bd8c8f1SEdward Tomasz Napierala 2668bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS) 2678bd8c8f1SEdward Tomasz Napierala { 2688bd8c8f1SEdward Tomasz Napierala int val = rctl_throttle_pct; 2698bd8c8f1SEdward Tomasz Napierala int error; 2708bd8c8f1SEdward Tomasz Napierala 2718bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2728bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2738bd8c8f1SEdward Tomasz Napierala return (error); 2748bd8c8f1SEdward Tomasz Napierala if (val < 0) 2758bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2768bd8c8f1SEdward Tomasz Napierala 2778bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2788bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct = val; 2798bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2808bd8c8f1SEdward Tomasz Napierala 2818bd8c8f1SEdward Tomasz Napierala return (0); 2828bd8c8f1SEdward Tomasz Napierala } 2838bd8c8f1SEdward Tomasz Napierala 2848bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS) 2858bd8c8f1SEdward Tomasz Napierala { 2868bd8c8f1SEdward Tomasz Napierala int val = rctl_throttle_pct2; 2878bd8c8f1SEdward Tomasz Napierala int error; 2888bd8c8f1SEdward Tomasz Napierala 2898bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2908bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2918bd8c8f1SEdward Tomasz Napierala return (error); 2928bd8c8f1SEdward Tomasz Napierala if (val < 0) 2938bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2948bd8c8f1SEdward Tomasz Napierala 2958bd8c8f1SEdward Tomasz Napierala RCTL_WLOCK(); 2968bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct2 = val; 2978bd8c8f1SEdward Tomasz Napierala RCTL_WUNLOCK(); 2988bd8c8f1SEdward Tomasz Napierala 2998bd8c8f1SEdward Tomasz Napierala return (0); 3008bd8c8f1SEdward Tomasz Napierala } 3018bd8c8f1SEdward Tomasz Napierala 302ec125fbbSEdward Tomasz Napierala static const char * 303ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 304ec125fbbSEdward Tomasz Napierala { 305ec125fbbSEdward Tomasz Napierala int i; 306ec125fbbSEdward Tomasz Napierala 307ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 308ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 309ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 310ec125fbbSEdward Tomasz Napierala } 311ec125fbbSEdward Tomasz Napierala 312ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 313ec125fbbSEdward Tomasz Napierala } 314ec125fbbSEdward Tomasz Napierala 315ec125fbbSEdward Tomasz Napierala static const char * 316ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 317ec125fbbSEdward Tomasz Napierala { 318ec125fbbSEdward Tomasz Napierala int i; 319ec125fbbSEdward Tomasz Napierala 320ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 321ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 322ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 323ec125fbbSEdward Tomasz Napierala } 324ec125fbbSEdward Tomasz Napierala 325ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 326ec125fbbSEdward Tomasz Napierala } 327ec125fbbSEdward Tomasz Napierala 328ec125fbbSEdward Tomasz Napierala const char * 329ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 330ec125fbbSEdward Tomasz Napierala { 331ec125fbbSEdward Tomasz Napierala int i; 332ec125fbbSEdward Tomasz Napierala 333ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 334ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 335ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 336ec125fbbSEdward Tomasz Napierala } 337ec125fbbSEdward Tomasz Napierala 338ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 339ec125fbbSEdward Tomasz Napierala } 340ec125fbbSEdward Tomasz Napierala 341ac3c9819SEdward Tomasz Napierala static struct racct * 342ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 343ac3c9819SEdward Tomasz Napierala { 344ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 345ac3c9819SEdward Tomasz Napierala 346ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3474c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 348ac3c9819SEdward Tomasz Napierala 349ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 350ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 351ac3c9819SEdward Tomasz Napierala return (p->p_racct); 352ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 353ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 354ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 355ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 356ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 357ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 358ac3c9819SEdward Tomasz Napierala default: 359ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 360ac3c9819SEdward Tomasz Napierala } 361ac3c9819SEdward Tomasz Napierala } 362ac3c9819SEdward Tomasz Napierala 363ec125fbbSEdward Tomasz Napierala /* 364ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 365ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 366ec125fbbSEdward Tomasz Napierala */ 367ec125fbbSEdward Tomasz Napierala static int64_t 368ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 369ec125fbbSEdward Tomasz Napierala { 370ac3c9819SEdward Tomasz Napierala int64_t available; 371ac3c9819SEdward Tomasz Napierala const struct racct *racct; 372ec125fbbSEdward Tomasz Napierala 3734b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3744c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 375ec125fbbSEdward Tomasz Napierala 376ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 377ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 378ec125fbbSEdward Tomasz Napierala 379ec125fbbSEdward Tomasz Napierala return (available); 380ec125fbbSEdward Tomasz Napierala } 381ec125fbbSEdward Tomasz Napierala 382ec125fbbSEdward Tomasz Napierala /* 383ae34b6ffSEdward Tomasz Napierala * Called every second for proc, uidinfo, loginclass, and jail containers. 384ae34b6ffSEdward Tomasz Napierala * If the limit isn't exceeded, it decreases the usage amount to zero. 385ae34b6ffSEdward Tomasz Napierala * Otherwise, it decreases it by the value of the limit. This way 386ae34b6ffSEdward Tomasz Napierala * resource consumption exceeding the limit "carries over" to the next 387ae34b6ffSEdward Tomasz Napierala * period. 388ec125fbbSEdward Tomasz Napierala */ 389ae34b6ffSEdward Tomasz Napierala void 390ae34b6ffSEdward Tomasz Napierala rctl_throttle_decay(struct racct *racct, int resource) 391ec125fbbSEdward Tomasz Napierala { 392ae34b6ffSEdward Tomasz Napierala struct rctl_rule *rule; 393ae34b6ffSEdward Tomasz Napierala struct rctl_rule_link *link; 394ae34b6ffSEdward Tomasz Napierala int64_t minavailable; 395ec125fbbSEdward Tomasz Napierala 3964b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 397ec125fbbSEdward Tomasz Napierala 398ae34b6ffSEdward Tomasz Napierala minavailable = INT64_MAX; 399ec125fbbSEdward Tomasz Napierala 400ae34b6ffSEdward Tomasz Napierala RCTL_RLOCK(); 401ae34b6ffSEdward Tomasz Napierala 402ae34b6ffSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 403ae34b6ffSEdward Tomasz Napierala rule = link->rrl_rule; 404ae34b6ffSEdward Tomasz Napierala 405ae34b6ffSEdward Tomasz Napierala if (rule->rr_resource != resource) 406ae34b6ffSEdward Tomasz Napierala continue; 407ae34b6ffSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_THROTTLE) 408ae34b6ffSEdward Tomasz Napierala continue; 409ae34b6ffSEdward Tomasz Napierala 410ae34b6ffSEdward Tomasz Napierala if (rule->rr_amount < minavailable) 411ae34b6ffSEdward Tomasz Napierala minavailable = rule->rr_amount; 412ae34b6ffSEdward Tomasz Napierala } 413ae34b6ffSEdward Tomasz Napierala 414ae34b6ffSEdward Tomasz Napierala RCTL_RUNLOCK(); 415ae34b6ffSEdward Tomasz Napierala 416ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] < minavailable) { 417ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = 0; 418ae34b6ffSEdward Tomasz Napierala } else { 419ae34b6ffSEdward Tomasz Napierala /* 420ae34b6ffSEdward Tomasz Napierala * Cap utilization counter at ten times the limit. Otherwise, 421ae34b6ffSEdward Tomasz Napierala * if we changed the rule lowering the allowed amount, it could 422ae34b6ffSEdward Tomasz Napierala * take unreasonably long time for the accumulated resource 423ae34b6ffSEdward Tomasz Napierala * usage to drop. 424ae34b6ffSEdward Tomasz Napierala */ 425ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] > minavailable * 10) 426ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = minavailable * 10; 427ae34b6ffSEdward Tomasz Napierala 428ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] -= minavailable; 429ae34b6ffSEdward Tomasz Napierala } 430ec125fbbSEdward Tomasz Napierala } 431ec125fbbSEdward Tomasz Napierala 432ec125fbbSEdward Tomasz Napierala /* 433af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 43436af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 43536af9869SEdward Tomasz Napierala */ 43636af9869SEdward Tomasz Napierala int64_t 43736af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 43836af9869SEdward Tomasz Napierala struct rctl_rule *rule; 43936af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 44036af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 44136af9869SEdward Tomasz Napierala 4424b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 4434b5c9cf6SEdward Tomasz Napierala 44436af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 44536af9869SEdward Tomasz Napierala limit = 0; 44636af9869SEdward Tomasz Napierala 4474c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 44836af9869SEdward Tomasz Napierala 44936af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 45036af9869SEdward Tomasz Napierala rule = link->rrl_rule; 45136af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 45236af9869SEdward Tomasz Napierala continue; 45336af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 45436af9869SEdward Tomasz Napierala continue; 45536af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 45636af9869SEdward Tomasz Napierala if (available < minavailable) { 45736af9869SEdward Tomasz Napierala minavailable = available; 45836af9869SEdward Tomasz Napierala limit = rule->rr_amount; 45936af9869SEdward Tomasz Napierala } 46036af9869SEdward Tomasz Napierala } 46136af9869SEdward Tomasz Napierala 4624c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 46336af9869SEdward Tomasz Napierala 46436af9869SEdward Tomasz Napierala /* 46536af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 46636af9869SEdward Tomasz Napierala * %cpu resource. This makes %cpu throttling more agressive 46736af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 46836af9869SEdward Tomasz Napierala */ 46936af9869SEdward Tomasz Napierala if (limit != 0) { 47036af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 47136af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 47236af9869SEdward Tomasz Napierala else 47336af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 47436af9869SEdward Tomasz Napierala } 47536af9869SEdward Tomasz Napierala 47636af9869SEdward Tomasz Napierala return (minavailable); 47736af9869SEdward Tomasz Napierala } 47836af9869SEdward Tomasz Napierala 479ae34b6ffSEdward Tomasz Napierala static uint64_t 480ae34b6ffSEdward Tomasz Napierala xadd(uint64_t a, uint64_t b) 481ae34b6ffSEdward Tomasz Napierala { 482ae34b6ffSEdward Tomasz Napierala uint64_t c; 483ae34b6ffSEdward Tomasz Napierala 484ae34b6ffSEdward Tomasz Napierala c = a + b; 485ae34b6ffSEdward Tomasz Napierala 486ae34b6ffSEdward Tomasz Napierala /* 487ae34b6ffSEdward Tomasz Napierala * Detect overflow. 488ae34b6ffSEdward Tomasz Napierala */ 489ae34b6ffSEdward Tomasz Napierala if (c < a || c < b) 490ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 491ae34b6ffSEdward Tomasz Napierala 492ae34b6ffSEdward Tomasz Napierala return (c); 493ae34b6ffSEdward Tomasz Napierala } 494ae34b6ffSEdward Tomasz Napierala 495ae34b6ffSEdward Tomasz Napierala static uint64_t 496ae34b6ffSEdward Tomasz Napierala xmul(uint64_t a, uint64_t b) 497ae34b6ffSEdward Tomasz Napierala { 498ae34b6ffSEdward Tomasz Napierala 499*f459a818SEdward Tomasz Napierala if (b != 0 && a > UINT64_MAX / b) 500ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 501ae34b6ffSEdward Tomasz Napierala 502*f459a818SEdward Tomasz Napierala return (a * b); 503ae34b6ffSEdward Tomasz Napierala } 504ae34b6ffSEdward Tomasz Napierala 50536af9869SEdward Tomasz Napierala /* 506ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 507ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 508ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 509ec125fbbSEdward Tomasz Napierala */ 510ec125fbbSEdward Tomasz Napierala int 511ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 512ec125fbbSEdward Tomasz Napierala { 513f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 514f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 515ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 516ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 517ec125fbbSEdward Tomasz Napierala struct sbuf sb; 518ae34b6ffSEdward Tomasz Napierala int64_t available; 519ae34b6ffSEdward Tomasz Napierala uint64_t sleep_ms, sleep_ratio; 520ec125fbbSEdward Tomasz Napierala int should_deny = 0; 521ec125fbbSEdward Tomasz Napierala char *buf; 522ec125fbbSEdward Tomasz Napierala 523ae34b6ffSEdward Tomasz Napierala 5244b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 5254b5c9cf6SEdward Tomasz Napierala 5264c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 527ec125fbbSEdward Tomasz Napierala 528ec125fbbSEdward Tomasz Napierala /* 529ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 530ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 531ec125fbbSEdward Tomasz Napierala */ 532ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 533ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 534ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 535ec125fbbSEdward Tomasz Napierala continue; 536ae34b6ffSEdward Tomasz Napierala 537ae34b6ffSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 538ae34b6ffSEdward Tomasz Napierala if (available >= (int64_t)amount) { 539ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 540ec125fbbSEdward Tomasz Napierala continue; 541ec125fbbSEdward Tomasz Napierala } 542ec125fbbSEdward Tomasz Napierala 543ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 544ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 545ec125fbbSEdward Tomasz Napierala should_deny = 1; 546ec125fbbSEdward Tomasz Napierala continue; 547ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 548ec125fbbSEdward Tomasz Napierala /* 549ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 550ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 551ec125fbbSEdward Tomasz Napierala */ 552ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 553ec125fbbSEdward Tomasz Napierala continue; 554ec125fbbSEdward Tomasz Napierala 55572a401d9SEdward Tomasz Napierala /* 55672a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 55772a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 55872a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 55972a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 56072a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 56172a401d9SEdward Tomasz Napierala */ 56272a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 56372a401d9SEdward Tomasz Napierala continue; 56472a401d9SEdward Tomasz Napierala 565f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 566f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 567ec125fbbSEdward Tomasz Napierala continue; 568ec125fbbSEdward Tomasz Napierala 569ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 570ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 571ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 572ec125fbbSEdward Tomasz Napierala continue; 573ec125fbbSEdward Tomasz Napierala } 574ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 575ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 576ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 577ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 578ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 579ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 580a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 581ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 582ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 583ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 584ec125fbbSEdward Tomasz Napierala continue; 585ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 586ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 587ec125fbbSEdward Tomasz Napierala continue; 588ec125fbbSEdward Tomasz Napierala 58972a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 59072a401d9SEdward Tomasz Napierala continue; 59172a401d9SEdward Tomasz Napierala 592f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 593f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 594f70c075eSEdward Tomasz Napierala continue; 595f70c075eSEdward Tomasz Napierala 596ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 597ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 598ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 599ec125fbbSEdward Tomasz Napierala continue; 600ec125fbbSEdward Tomasz Napierala } 601ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 602ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 603ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 604ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 605ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 606a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 607ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 608ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 609ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 610ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 611ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 612ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 613ec125fbbSEdward Tomasz Napierala continue; 614ae34b6ffSEdward Tomasz Napierala case RCTL_ACTION_THROTTLE: 615ae34b6ffSEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 616ae34b6ffSEdward Tomasz Napierala continue; 617ae34b6ffSEdward Tomasz Napierala 618ae34b6ffSEdward Tomasz Napierala /* 619ae34b6ffSEdward Tomasz Napierala * Make the process sleep for a fraction of second 620ae34b6ffSEdward Tomasz Napierala * proportional to the ratio of process' resource 621ae34b6ffSEdward Tomasz Napierala * utilization compared to the limit. The point is 622ae34b6ffSEdward Tomasz Napierala * to penalize resource hogs: processes that consume 623ae34b6ffSEdward Tomasz Napierala * more of the available resources sleep for longer. 624ae34b6ffSEdward Tomasz Napierala * 625ae34b6ffSEdward Tomasz Napierala * We're trying to defer division until the very end, 626ae34b6ffSEdward Tomasz Napierala * to minimize the rounding effects. The following 627ae34b6ffSEdward Tomasz Napierala * calculation could have been written in a clearer 628ae34b6ffSEdward Tomasz Napierala * way like this: 629ae34b6ffSEdward Tomasz Napierala * 630ae34b6ffSEdward Tomasz Napierala * sleep_ms = hz * p->p_racct->r_resources[resource] / 631ae34b6ffSEdward Tomasz Napierala * rule->rr_amount; 632ae34b6ffSEdward Tomasz Napierala * sleep_ms *= rctl_throttle_pct / 100; 633ae34b6ffSEdward Tomasz Napierala * if (sleep_ms < rctl_throttle_min) 634ae34b6ffSEdward Tomasz Napierala * sleep_ms = rctl_throttle_min; 635ae34b6ffSEdward Tomasz Napierala * 636ae34b6ffSEdward Tomasz Napierala */ 637ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(hz, p->p_racct->r_resources[resource]); 638ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(sleep_ms, rctl_throttle_pct) / 100; 639ae34b6ffSEdward Tomasz Napierala if (sleep_ms < rctl_throttle_min * rule->rr_amount) 640ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_min * rule->rr_amount; 641ae34b6ffSEdward Tomasz Napierala 642ae34b6ffSEdward Tomasz Napierala /* 643ae34b6ffSEdward Tomasz Napierala * Multiply that by the ratio of the resource 644ae34b6ffSEdward Tomasz Napierala * consumption for the container compared to the limit, 645ae34b6ffSEdward Tomasz Napierala * squared. In other words, a process in a container 646ae34b6ffSEdward Tomasz Napierala * that is two times over the limit will be throttled 647ae34b6ffSEdward Tomasz Napierala * four times as much for hitting the same rule. The 648ae34b6ffSEdward Tomasz Napierala * point is to penalize processes more if the container 649ae34b6ffSEdward Tomasz Napierala * itself (eg certain UID or jail) is above the limit. 650ae34b6ffSEdward Tomasz Napierala */ 651ae34b6ffSEdward Tomasz Napierala if (available < 0) 652ae34b6ffSEdward Tomasz Napierala sleep_ratio = -available / rule->rr_amount; 653ae34b6ffSEdward Tomasz Napierala else 654ae34b6ffSEdward Tomasz Napierala sleep_ratio = 0; 655ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, sleep_ratio); 656ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, rctl_throttle_pct2) / 100; 657ae34b6ffSEdward Tomasz Napierala sleep_ms = xadd(sleep_ms, xmul(sleep_ms, sleep_ratio)); 658ae34b6ffSEdward Tomasz Napierala 659ae34b6ffSEdward Tomasz Napierala /* 660ae34b6ffSEdward Tomasz Napierala * Finally the division. 661ae34b6ffSEdward Tomasz Napierala */ 662ae34b6ffSEdward Tomasz Napierala sleep_ms /= rule->rr_amount; 663ae34b6ffSEdward Tomasz Napierala 664ae34b6ffSEdward Tomasz Napierala if (sleep_ms > rctl_throttle_max) 665ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_max; 666ae34b6ffSEdward Tomasz Napierala #if 0 667ae34b6ffSEdward Tomasz Napierala printf("%s: pid %d (%s), %jd of %jd, will sleep for %ld ms (ratio %ld, available %ld)\n", 668ae34b6ffSEdward Tomasz Napierala __func__, p->p_pid, p->p_comm, 669ae34b6ffSEdward Tomasz Napierala p->p_racct->r_resources[resource], 670ae34b6ffSEdward Tomasz Napierala rule->rr_amount, sleep_ms, sleep_ratio, available); 671ae34b6ffSEdward Tomasz Napierala #endif 672ae34b6ffSEdward Tomasz Napierala 673ae34b6ffSEdward Tomasz Napierala KASSERT(sleep_ms >= rctl_throttle_min, ("%s: %ju < %d\n", 674ae34b6ffSEdward Tomasz Napierala __func__, (uintmax_t)sleep_ms, rctl_throttle_min)); 675ae34b6ffSEdward Tomasz Napierala racct_proc_throttle(p, sleep_ms); 676ae34b6ffSEdward Tomasz Napierala continue; 677ec125fbbSEdward Tomasz Napierala default: 678ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 679ec125fbbSEdward Tomasz Napierala continue; 680ec125fbbSEdward Tomasz Napierala 68172a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 68272a401d9SEdward Tomasz Napierala continue; 68372a401d9SEdward Tomasz Napierala 684ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 685ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 686ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 687ec125fbbSEdward Tomasz Napierala rule->rr_action)); 688ec125fbbSEdward Tomasz Napierala 689ec125fbbSEdward Tomasz Napierala /* 690ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 691ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 692ec125fbbSEdward Tomasz Napierala */ 6938451d0ddSKip Macy kern_psignal(p, rule->rr_action); 694ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 695ec125fbbSEdward Tomasz Napierala continue; 696ec125fbbSEdward Tomasz Napierala } 697ec125fbbSEdward Tomasz Napierala } 698ec125fbbSEdward Tomasz Napierala 6994c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 700ec125fbbSEdward Tomasz Napierala 701ec125fbbSEdward Tomasz Napierala if (should_deny) { 702ec125fbbSEdward Tomasz Napierala /* 703ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 704ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 705ec125fbbSEdward Tomasz Napierala */ 706ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 707ec125fbbSEdward Tomasz Napierala } 708ec125fbbSEdward Tomasz Napierala 709ec125fbbSEdward Tomasz Napierala return (0); 710ec125fbbSEdward Tomasz Napierala } 711ec125fbbSEdward Tomasz Napierala 712ec125fbbSEdward Tomasz Napierala uint64_t 713ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 714ec125fbbSEdward Tomasz Napierala { 715ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 716ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 717ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 718ec125fbbSEdward Tomasz Napierala 7194b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7204b5c9cf6SEdward Tomasz Napierala 7214c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 722ec125fbbSEdward Tomasz Napierala 723ec125fbbSEdward Tomasz Napierala /* 724ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 725ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 726ec125fbbSEdward Tomasz Napierala */ 727ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 728ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 729ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 730ec125fbbSEdward Tomasz Napierala continue; 731ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 732ec125fbbSEdward Tomasz Napierala continue; 733ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 734ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 735ec125fbbSEdward Tomasz Napierala } 736ec125fbbSEdward Tomasz Napierala 7374c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 738ec125fbbSEdward Tomasz Napierala 739ec125fbbSEdward Tomasz Napierala return (amount); 740ec125fbbSEdward Tomasz Napierala } 741ec125fbbSEdward Tomasz Napierala 742ec125fbbSEdward Tomasz Napierala uint64_t 743ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 744ec125fbbSEdward Tomasz Napierala { 745ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 746ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 747ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 748ec125fbbSEdward Tomasz Napierala 749ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 750ec125fbbSEdward Tomasz Napierala 7514b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7524b5c9cf6SEdward Tomasz Napierala 7534c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 754ec125fbbSEdward Tomasz Napierala 755ec125fbbSEdward Tomasz Napierala /* 756ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 757ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 758ec125fbbSEdward Tomasz Napierala */ 759ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 760ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 761ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 762ec125fbbSEdward Tomasz Napierala continue; 763ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 764ec125fbbSEdward Tomasz Napierala continue; 765ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 766ec125fbbSEdward Tomasz Napierala if (available < minavailable) 767ec125fbbSEdward Tomasz Napierala minavailable = available; 768ec125fbbSEdward Tomasz Napierala } 769ec125fbbSEdward Tomasz Napierala 7704c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 771ec125fbbSEdward Tomasz Napierala 772ec125fbbSEdward Tomasz Napierala /* 773ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 774ec125fbbSEdward Tomasz Napierala */ 775ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 776ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 777ec125fbbSEdward Tomasz Napierala minavailable += allocated; 778ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 779ec125fbbSEdward Tomasz Napierala minavailable = 0; 780ec125fbbSEdward Tomasz Napierala return (minavailable); 781ec125fbbSEdward Tomasz Napierala } 782ec125fbbSEdward Tomasz Napierala 783ec125fbbSEdward Tomasz Napierala static int 784ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 785ec125fbbSEdward Tomasz Napierala { 786ec125fbbSEdward Tomasz Napierala 7874b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7884b5c9cf6SEdward Tomasz Napierala 789ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 790ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 791ec125fbbSEdward Tomasz Napierala return (0); 792ec125fbbSEdward Tomasz Napierala 793ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 794ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 795ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 796ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 797ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 798ec125fbbSEdward Tomasz Napierala return (0); 799ec125fbbSEdward Tomasz Napierala break; 800ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 801ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 802ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 803ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 804ec125fbbSEdward Tomasz Napierala return (0); 805ec125fbbSEdward Tomasz Napierala break; 806ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 807415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 808415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 809415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 810ec125fbbSEdward Tomasz Napierala return (0); 811ec125fbbSEdward Tomasz Napierala break; 812ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 813a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 814a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 815a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 816ec125fbbSEdward Tomasz Napierala return (0); 817ec125fbbSEdward Tomasz Napierala break; 818ec125fbbSEdward Tomasz Napierala default: 819ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 820ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 821ec125fbbSEdward Tomasz Napierala } 822ec125fbbSEdward Tomasz Napierala } 823ec125fbbSEdward Tomasz Napierala 824ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 825ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 826ec125fbbSEdward Tomasz Napierala return (0); 827ec125fbbSEdward Tomasz Napierala } 828ec125fbbSEdward Tomasz Napierala 829ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 830ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 831ec125fbbSEdward Tomasz Napierala return (0); 832ec125fbbSEdward Tomasz Napierala } 833ec125fbbSEdward Tomasz Napierala 834ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 835ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 836ec125fbbSEdward Tomasz Napierala return (0); 837ec125fbbSEdward Tomasz Napierala } 838ec125fbbSEdward Tomasz Napierala 839ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 840ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 841ec125fbbSEdward Tomasz Napierala return (0); 842ec125fbbSEdward Tomasz Napierala } 843ec125fbbSEdward Tomasz Napierala 844ec125fbbSEdward Tomasz Napierala return (1); 845ec125fbbSEdward Tomasz Napierala } 846ec125fbbSEdward Tomasz Napierala 847ec125fbbSEdward Tomasz Napierala static int 848ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 849ec125fbbSEdward Tomasz Napierala { 850ec125fbbSEdward Tomasz Napierala int i; 851ec125fbbSEdward Tomasz Napierala 852ec125fbbSEdward Tomasz Napierala if (value == NULL) 853ec125fbbSEdward Tomasz Napierala return (EINVAL); 854ec125fbbSEdward Tomasz Napierala 855ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 856ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 857ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 858ec125fbbSEdward Tomasz Napierala return (0); 859ec125fbbSEdward Tomasz Napierala } 860ec125fbbSEdward Tomasz Napierala } 861ec125fbbSEdward Tomasz Napierala 862ec125fbbSEdward Tomasz Napierala return (EINVAL); 863ec125fbbSEdward Tomasz Napierala } 864ec125fbbSEdward Tomasz Napierala 865ec125fbbSEdward Tomasz Napierala static int 866ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 867ec125fbbSEdward Tomasz Napierala { 868ec125fbbSEdward Tomasz Napierala char *end; 869ec125fbbSEdward Tomasz Napierala 870ec125fbbSEdward Tomasz Napierala if (str == NULL) 871ec125fbbSEdward Tomasz Napierala return (EINVAL); 872ec125fbbSEdward Tomasz Napierala 873ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 874ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 875ec125fbbSEdward Tomasz Napierala return (EINVAL); 876ec125fbbSEdward Tomasz Napierala 877ec125fbbSEdward Tomasz Napierala return (0); 878ec125fbbSEdward Tomasz Napierala } 879ec125fbbSEdward Tomasz Napierala 880ec125fbbSEdward Tomasz Napierala static int 881ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 882ec125fbbSEdward Tomasz Napierala { 883ec125fbbSEdward Tomasz Napierala char *end; 884ec125fbbSEdward Tomasz Napierala 885ec125fbbSEdward Tomasz Napierala if (str == NULL) 886ec125fbbSEdward Tomasz Napierala return (EINVAL); 887ec125fbbSEdward Tomasz Napierala 888ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 889ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 890ec125fbbSEdward Tomasz Napierala return (EINVAL); 891ec125fbbSEdward Tomasz Napierala 892b450d447SEdward Tomasz Napierala if (*value < 0) 893b450d447SEdward Tomasz Napierala return (ERANGE); 894b450d447SEdward Tomasz Napierala 895ec125fbbSEdward Tomasz Napierala return (0); 896ec125fbbSEdward Tomasz Napierala } 897ec125fbbSEdward Tomasz Napierala 898ec125fbbSEdward Tomasz Napierala /* 899ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 900ec125fbbSEdward Tomasz Napierala */ 901ec125fbbSEdward Tomasz Napierala static void 902ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 903ec125fbbSEdward Tomasz Napierala { 904ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 905ec125fbbSEdward Tomasz Napierala 9064b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 907ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 908ec125fbbSEdward Tomasz Napierala 909ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 910ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 911ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 912ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 913ec125fbbSEdward Tomasz Napierala 9144c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 915ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 9164c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 917ec125fbbSEdward Tomasz Napierala } 918ec125fbbSEdward Tomasz Napierala 919ec125fbbSEdward Tomasz Napierala static int 920ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 921ec125fbbSEdward Tomasz Napierala { 922ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 923ec125fbbSEdward Tomasz Napierala 9244b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 925ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 9264c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 927ec125fbbSEdward Tomasz Napierala 928ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 929ec125fbbSEdward Tomasz Napierala if (link == NULL) 930ec125fbbSEdward Tomasz Napierala return (ENOMEM); 931ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 932ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 933ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 934ec125fbbSEdward Tomasz Napierala 935ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 936ec125fbbSEdward Tomasz Napierala return (0); 937ec125fbbSEdward Tomasz Napierala } 938ec125fbbSEdward Tomasz Napierala 939ec125fbbSEdward Tomasz Napierala /* 940ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 941ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 942ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 943ec125fbbSEdward Tomasz Napierala */ 944ec125fbbSEdward Tomasz Napierala static int 945ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 946ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 947ec125fbbSEdward Tomasz Napierala { 948ec125fbbSEdward Tomasz Napierala int removed = 0; 949ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 950ec125fbbSEdward Tomasz Napierala 9514b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9524c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 953ec125fbbSEdward Tomasz Napierala 954ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 955ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 956ec125fbbSEdward Tomasz Napierala continue; 957ec125fbbSEdward Tomasz Napierala 958ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 959ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 960ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 961ec125fbbSEdward Tomasz Napierala removed++; 962ec125fbbSEdward Tomasz Napierala } 963ec125fbbSEdward Tomasz Napierala return (removed); 964ec125fbbSEdward Tomasz Napierala } 965ec125fbbSEdward Tomasz Napierala 966ec125fbbSEdward Tomasz Napierala static void 967ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 968ec125fbbSEdward Tomasz Napierala { 969ec125fbbSEdward Tomasz Napierala 9704b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9714b5c9cf6SEdward Tomasz Napierala 972ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 973ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 974ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 975a7ad07bfSEdward Tomasz Napierala break; 976ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 977a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 978a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 979ec125fbbSEdward Tomasz Napierala break; 980ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 981ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 982ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 983ec125fbbSEdward Tomasz Napierala break; 984ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 985415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 986415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 987ec125fbbSEdward Tomasz Napierala break; 988ec125fbbSEdward Tomasz Napierala default: 989ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 990ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 991ec125fbbSEdward Tomasz Napierala } 992ec125fbbSEdward Tomasz Napierala } 993ec125fbbSEdward Tomasz Napierala 994ec125fbbSEdward Tomasz Napierala static void 995ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 996ec125fbbSEdward Tomasz Napierala { 997ec125fbbSEdward Tomasz Napierala 9984b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9994b5c9cf6SEdward Tomasz Napierala 1000ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1001ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1002ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1003a7ad07bfSEdward Tomasz Napierala break; 1004ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1005a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 1006a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 1007ec125fbbSEdward Tomasz Napierala break; 1008ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1009ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 1010ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 1011ec125fbbSEdward Tomasz Napierala break; 1012ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1013415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 1014415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 1015ec125fbbSEdward Tomasz Napierala break; 1016ec125fbbSEdward Tomasz Napierala default: 1017ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 1018ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1019ec125fbbSEdward Tomasz Napierala } 1020ec125fbbSEdward Tomasz Napierala } 1021ec125fbbSEdward Tomasz Napierala 1022ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1023ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 1024ec125fbbSEdward Tomasz Napierala { 1025ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1026ec125fbbSEdward Tomasz Napierala 10274b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10284b5c9cf6SEdward Tomasz Napierala 1029ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 1030ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1031ec125fbbSEdward Tomasz Napierala return (NULL); 1032ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1033ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1034ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1035415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1036a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1037ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1038ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1039ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1040ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1041ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 1042ec125fbbSEdward Tomasz Napierala 1043ec125fbbSEdward Tomasz Napierala return (rule); 1044ec125fbbSEdward Tomasz Napierala } 1045ec125fbbSEdward Tomasz Napierala 1046ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1047ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 1048ec125fbbSEdward Tomasz Napierala { 1049ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 1050ec125fbbSEdward Tomasz Napierala 10514b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10524b5c9cf6SEdward Tomasz Napierala 1053ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 1054ec125fbbSEdward Tomasz Napierala if (copy == NULL) 1055ec125fbbSEdward Tomasz Napierala return (NULL); 1056ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 1057ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 1058ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 1059415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 1060a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 1061ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 1062ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 1063ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 1064ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 1065ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 1066ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 1067ec125fbbSEdward Tomasz Napierala 1068ec125fbbSEdward Tomasz Napierala return (copy); 1069ec125fbbSEdward Tomasz Napierala } 1070ec125fbbSEdward Tomasz Napierala 1071ec125fbbSEdward Tomasz Napierala void 1072ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 1073ec125fbbSEdward Tomasz Napierala { 1074ec125fbbSEdward Tomasz Napierala 10754b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1076ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1077ec125fbbSEdward Tomasz Napierala 1078ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 1079ec125fbbSEdward Tomasz Napierala } 1080ec125fbbSEdward Tomasz Napierala 1081ec125fbbSEdward Tomasz Napierala static void 1082ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 1083ec125fbbSEdward Tomasz Napierala { 1084ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1085ec125fbbSEdward Tomasz Napierala 1086ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 1087ec125fbbSEdward Tomasz Napierala 10884b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1089ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 1090ec125fbbSEdward Tomasz Napierala 1091ec125fbbSEdward Tomasz Napierala /* 1092ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 1093ec125fbbSEdward Tomasz Napierala */ 1094ec125fbbSEdward Tomasz Napierala 1095ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 1096ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 1097ec125fbbSEdward Tomasz Napierala } 1098ec125fbbSEdward Tomasz Napierala 1099ec125fbbSEdward Tomasz Napierala void 1100ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 1101ec125fbbSEdward Tomasz Napierala { 1102ec125fbbSEdward Tomasz Napierala 11034b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1104ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1105ec125fbbSEdward Tomasz Napierala 1106ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 1107ec125fbbSEdward Tomasz Napierala /* 1108ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 1109ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 1110ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 1111ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 1112ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 1113ec125fbbSEdward Tomasz Napierala */ 1114ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 1115ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 1116ec125fbbSEdward Tomasz Napierala } 1117ec125fbbSEdward Tomasz Napierala } 1118ec125fbbSEdward Tomasz Napierala 1119ec125fbbSEdward Tomasz Napierala static int 1120ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 1121ec125fbbSEdward Tomasz Napierala { 1122ec125fbbSEdward Tomasz Napierala 11234b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11244b5c9cf6SEdward Tomasz Napierala 1125ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1126ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1127ec125fbbSEdward Tomasz Napierala return (0); 1128ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1129ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1130ec125fbbSEdward Tomasz Napierala return (0); 1131ec125fbbSEdward Tomasz Napierala break; 1132ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1133ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1134ec125fbbSEdward Tomasz Napierala return (0); 1135ec125fbbSEdward Tomasz Napierala break; 1136ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1137415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1138ec125fbbSEdward Tomasz Napierala return (0); 1139ec125fbbSEdward Tomasz Napierala break; 1140ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1141a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1142ec125fbbSEdward Tomasz Napierala return (0); 1143ec125fbbSEdward Tomasz Napierala break; 1144ec125fbbSEdward Tomasz Napierala default: 1145ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 1146ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1147ec125fbbSEdward Tomasz Napierala } 1148ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 1149ec125fbbSEdward Tomasz Napierala return (0); 1150ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 1151ec125fbbSEdward Tomasz Napierala return (0); 1152ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 1153ec125fbbSEdward Tomasz Napierala return (0); 1154ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 1155ec125fbbSEdward Tomasz Napierala return (0); 1156ec125fbbSEdward Tomasz Napierala 1157ec125fbbSEdward Tomasz Napierala return (1); 1158ec125fbbSEdward Tomasz Napierala } 1159ec125fbbSEdward Tomasz Napierala 1160ec125fbbSEdward Tomasz Napierala static int 1161ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 1162ec125fbbSEdward Tomasz Napierala { 1163ec125fbbSEdward Tomasz Napierala int error = 0; 1164ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 1165ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 1166ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1167ec125fbbSEdward Tomasz Napierala id_t id; 1168ec125fbbSEdward Tomasz Napierala 11694b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11704b5c9cf6SEdward Tomasz Napierala 1171ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 1172ec125fbbSEdward Tomasz Napierala 1173ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 1174ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 1175ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 1176ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 1177ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 1178ec125fbbSEdward Tomasz Napierala perstr = rulestr; 1179ec125fbbSEdward Tomasz Napierala 1180ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 1181ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1182ec125fbbSEdward Tomasz Napierala else { 1183ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 1184ec125fbbSEdward Tomasz Napierala if (error != 0) 1185ec125fbbSEdward Tomasz Napierala goto out; 1186ec125fbbSEdward Tomasz Napierala } 1187ec125fbbSEdward Tomasz Napierala 1188ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 1189ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1190ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1191415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1192a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1193ec125fbbSEdward Tomasz Napierala } else { 1194ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1195ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1196ec125fbbSEdward Tomasz Napierala error = EINVAL; 1197ec125fbbSEdward Tomasz Napierala goto out; 1198ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1199ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1200ec125fbbSEdward Tomasz Napierala if (error != 0) 1201ec125fbbSEdward Tomasz Napierala goto out; 1202ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1203ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 1204ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 1205ec125fbbSEdward Tomasz Napierala error = ESRCH; 1206ec125fbbSEdward Tomasz Napierala goto out; 1207ec125fbbSEdward Tomasz Napierala } 1208ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 1209ec125fbbSEdward Tomasz Napierala break; 1210ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1211ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1212ec125fbbSEdward Tomasz Napierala if (error != 0) 1213ec125fbbSEdward Tomasz Napierala goto out; 1214ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 1215ec125fbbSEdward Tomasz Napierala break; 1216ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1217415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 1218ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 1219415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 1220ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 1221ec125fbbSEdward Tomasz Napierala goto out; 1222ec125fbbSEdward Tomasz Napierala } 1223ec125fbbSEdward Tomasz Napierala break; 1224ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1225a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 1226a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 1227a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 1228a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 1229ec125fbbSEdward Tomasz Napierala goto out; 1230ec125fbbSEdward Tomasz Napierala } 1231ec125fbbSEdward Tomasz Napierala break; 1232ec125fbbSEdward Tomasz Napierala default: 1233ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 1234ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1235ec125fbbSEdward Tomasz Napierala } 1236ec125fbbSEdward Tomasz Napierala } 1237ec125fbbSEdward Tomasz Napierala 1238ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1239ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1240ec125fbbSEdward Tomasz Napierala else { 1241ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1242ec125fbbSEdward Tomasz Napierala resourcenames); 1243ec125fbbSEdward Tomasz Napierala if (error != 0) 1244ec125fbbSEdward Tomasz Napierala goto out; 1245ec125fbbSEdward Tomasz Napierala } 1246ec125fbbSEdward Tomasz Napierala 1247ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1248ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1249ec125fbbSEdward Tomasz Napierala else { 1250ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1251ec125fbbSEdward Tomasz Napierala if (error != 0) 1252ec125fbbSEdward Tomasz Napierala goto out; 1253ec125fbbSEdward Tomasz Napierala } 1254ec125fbbSEdward Tomasz Napierala 1255ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1256ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1257ec125fbbSEdward Tomasz Napierala else { 1258ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1259ec125fbbSEdward Tomasz Napierala if (error != 0) 1260ec125fbbSEdward Tomasz Napierala goto out; 1261b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1262b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1263b450d447SEdward Tomasz Napierala error = ERANGE; 1264b450d447SEdward Tomasz Napierala goto out; 1265b450d447SEdward Tomasz Napierala } 1266cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1267ec125fbbSEdward Tomasz Napierala } 1268b450d447SEdward Tomasz Napierala } 1269ec125fbbSEdward Tomasz Napierala 1270ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1271ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1272ec125fbbSEdward Tomasz Napierala else { 1273ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1274ec125fbbSEdward Tomasz Napierala if (error != 0) 1275ec125fbbSEdward Tomasz Napierala goto out; 1276ec125fbbSEdward Tomasz Napierala } 1277ec125fbbSEdward Tomasz Napierala 1278ec125fbbSEdward Tomasz Napierala out: 1279ec125fbbSEdward Tomasz Napierala if (error == 0) 1280ec125fbbSEdward Tomasz Napierala *rulep = rule; 1281ec125fbbSEdward Tomasz Napierala else 1282ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1283ec125fbbSEdward Tomasz Napierala 1284ec125fbbSEdward Tomasz Napierala return (error); 1285ec125fbbSEdward Tomasz Napierala } 1286ec125fbbSEdward Tomasz Napierala 1287ec125fbbSEdward Tomasz Napierala /* 1288ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1289ec125fbbSEdward Tomasz Napierala */ 1290ec125fbbSEdward Tomasz Napierala int 1291ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1292ec125fbbSEdward Tomasz Napierala { 1293ec125fbbSEdward Tomasz Napierala struct proc *p; 1294ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1295ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1296ec125fbbSEdward Tomasz Napierala struct prison *pr; 1297a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1298ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1299ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1300ec125fbbSEdward Tomasz Napierala int match; 1301ec125fbbSEdward Tomasz Napierala 13024b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1303ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1304ec125fbbSEdward Tomasz Napierala 1305ec125fbbSEdward Tomasz Napierala /* 1306ae34b6ffSEdward Tomasz Napierala * Some rules just don't make sense, like "deny" rule for an undeniable 1307ae34b6ffSEdward Tomasz Napierala * resource. The exception are the RSS and %CPU resources - they are 1308ae34b6ffSEdward Tomasz Napierala * not deniable in the racct sense, but the limit is enforced in 1309ae34b6ffSEdward Tomasz Napierala * a different way. 1310ec125fbbSEdward Tomasz Napierala */ 1311ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1312ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DENIABLE(rule->rr_resource) && 1313ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_RSS && 1314ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_PCTCPU) { 1315ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1316ae34b6ffSEdward Tomasz Napierala } 1317ae34b6ffSEdward Tomasz Napierala 1318ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1319ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DECAYING(rule->rr_resource)) { 1320ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1321ae34b6ffSEdward Tomasz Napierala } 1322ae34b6ffSEdward Tomasz Napierala 1323ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1324ae34b6ffSEdward Tomasz Napierala rule->rr_resource == RACCT_PCTCPU) { 1325ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1326ae34b6ffSEdward Tomasz Napierala } 1327ec125fbbSEdward Tomasz Napierala 1328ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 1329ae34b6ffSEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) { 1330ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1331ae34b6ffSEdward Tomasz Napierala } 1332ec125fbbSEdward Tomasz Napierala 1333ec125fbbSEdward Tomasz Napierala /* 1334ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1335ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1336ec125fbbSEdward Tomasz Napierala */ 1337ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1338ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1339ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1340ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1341ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1342ec125fbbSEdward Tomasz Napierala } else 1343ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1344ec125fbbSEdward Tomasz Napierala 1345ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1346ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1347ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1348ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1349ec125fbbSEdward Tomasz Napierala 1350ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1351ec125fbbSEdward Tomasz Napierala /* 1352ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1353ec125fbbSEdward Tomasz Napierala * to do. 1354ec125fbbSEdward Tomasz Napierala */ 1355ec125fbbSEdward Tomasz Napierala return (0); 1356ec125fbbSEdward Tomasz Napierala 1357ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1358ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1359ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1360ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1361ec125fbbSEdward Tomasz Napierala break; 1362ec125fbbSEdward Tomasz Napierala 1363ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1364415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1365ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1366ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1367ec125fbbSEdward Tomasz Napierala break; 1368ec125fbbSEdward Tomasz Napierala 1369ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1370a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1371a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1372a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1373ec125fbbSEdward Tomasz Napierala break; 1374ec125fbbSEdward Tomasz Napierala 1375ec125fbbSEdward Tomasz Napierala default: 1376ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1377ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1378ec125fbbSEdward Tomasz Napierala } 1379ec125fbbSEdward Tomasz Napierala 1380ec125fbbSEdward Tomasz Napierala /* 1381ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1382ec125fbbSEdward Tomasz Napierala * it applies to. 1383ec125fbbSEdward Tomasz Napierala */ 1384ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1385ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1386ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1387ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1388ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1389ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1390ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1391ec125fbbSEdward Tomasz Napierala break; 1392ec125fbbSEdward Tomasz Napierala continue; 1393ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1394415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1395ec125fbbSEdward Tomasz Napierala break; 1396ec125fbbSEdward Tomasz Napierala continue; 1397ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1398ec125fbbSEdward Tomasz Napierala match = 0; 1399ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1400a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1401ec125fbbSEdward Tomasz Napierala match = 1; 1402ec125fbbSEdward Tomasz Napierala break; 1403ec125fbbSEdward Tomasz Napierala } 1404ec125fbbSEdward Tomasz Napierala } 1405ec125fbbSEdward Tomasz Napierala if (match) 1406ec125fbbSEdward Tomasz Napierala break; 1407ec125fbbSEdward Tomasz Napierala continue; 1408ec125fbbSEdward Tomasz Napierala default: 1409ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1410ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1411ec125fbbSEdward Tomasz Napierala } 1412ec125fbbSEdward Tomasz Napierala 1413ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1414ec125fbbSEdward Tomasz Napierala } 1415ec125fbbSEdward Tomasz Napierala 1416ec125fbbSEdward Tomasz Napierala return (0); 1417ec125fbbSEdward Tomasz Napierala } 1418ec125fbbSEdward Tomasz Napierala 1419ec125fbbSEdward Tomasz Napierala static void 142015db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 142115db3c07SEdward Tomasz Napierala { 142215db3c07SEdward Tomasz Napierala 14234c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 142415db3c07SEdward Tomasz Napierala } 142515db3c07SEdward Tomasz Napierala 142615db3c07SEdward Tomasz Napierala static void 142715db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 142815db3c07SEdward Tomasz Napierala { 142915db3c07SEdward Tomasz Napierala 14304c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 143115db3c07SEdward Tomasz Napierala } 143215db3c07SEdward Tomasz Napierala 143315db3c07SEdward Tomasz Napierala static void 1434ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1435ec125fbbSEdward Tomasz Napierala { 1436ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1437ec125fbbSEdward Tomasz Napierala int found = 0; 1438ec125fbbSEdward Tomasz Napierala 14394b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14404c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 14414b5c9cf6SEdward Tomasz Napierala 1442ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1443ec125fbbSEdward Tomasz Napierala 1444ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1445ec125fbbSEdward Tomasz Napierala } 1446ec125fbbSEdward Tomasz Napierala 1447ec125fbbSEdward Tomasz Napierala /* 1448ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1449ec125fbbSEdward Tomasz Napierala */ 1450ec125fbbSEdward Tomasz Napierala int 1451ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1452ec125fbbSEdward Tomasz Napierala { 1453ec125fbbSEdward Tomasz Napierala int found = 0; 1454ec125fbbSEdward Tomasz Napierala struct proc *p; 1455ec125fbbSEdward Tomasz Napierala 14564b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14574b5c9cf6SEdward Tomasz Napierala 1458ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1459ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1460ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 14614c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1462ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 14634c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1464ec125fbbSEdward Tomasz Napierala if (found) 1465ec125fbbSEdward Tomasz Napierala return (0); 1466ec125fbbSEdward Tomasz Napierala return (ESRCH); 1467ec125fbbSEdward Tomasz Napierala } 1468ec125fbbSEdward Tomasz Napierala 146915db3c07SEdward Tomasz Napierala loginclass_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 ui_racct_foreach(rctl_rule_remove_callback, 147315db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 147415db3c07SEdward Tomasz Napierala filter, (void *)&found); 147515db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 147615db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 147715db3c07SEdward Tomasz Napierala filter, (void *)&found); 1478ec125fbbSEdward Tomasz Napierala 1479ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 14804c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1481ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1482ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1483ec125fbbSEdward Tomasz Napierala } 14844c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1485ec125fbbSEdward Tomasz Napierala 1486ec125fbbSEdward Tomasz Napierala if (found) 1487ec125fbbSEdward Tomasz Napierala return (0); 1488ec125fbbSEdward Tomasz Napierala return (ESRCH); 1489ec125fbbSEdward Tomasz Napierala } 1490ec125fbbSEdward Tomasz Napierala 1491ec125fbbSEdward Tomasz Napierala /* 1492ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1493ec125fbbSEdward Tomasz Napierala */ 1494ec125fbbSEdward Tomasz Napierala static void 1495ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1496ec125fbbSEdward Tomasz Napierala { 1497ec125fbbSEdward Tomasz Napierala int64_t amount; 1498ec125fbbSEdward Tomasz Napierala 14994b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15004b5c9cf6SEdward Tomasz Napierala 1501ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1502ec125fbbSEdward Tomasz Napierala 1503ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1504ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1505ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1506ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1507ec125fbbSEdward Tomasz Napierala else 1508ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1509ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1510ec125fbbSEdward Tomasz Napierala break; 1511ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1512ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1513ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1514ec125fbbSEdward Tomasz Napierala else 1515ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1516ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1517ec125fbbSEdward Tomasz Napierala break; 1518ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1519415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1520ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1521ec125fbbSEdward Tomasz Napierala else 1522ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1523415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1524ec125fbbSEdward Tomasz Napierala break; 1525ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1526a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1527ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1528ec125fbbSEdward Tomasz Napierala else 1529ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1530a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1531ec125fbbSEdward Tomasz Napierala break; 1532ec125fbbSEdward Tomasz Napierala default: 1533ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1534ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1535ec125fbbSEdward Tomasz Napierala } 1536ec125fbbSEdward Tomasz Napierala 1537ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1538ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 153985a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 154085a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1541ec125fbbSEdward Tomasz Napierala 1542ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1543ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1544ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1545ec125fbbSEdward Tomasz Napierala amount); 1546ec125fbbSEdward Tomasz Napierala 1547ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1548ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1549ec125fbbSEdward Tomasz Napierala } 1550ec125fbbSEdward Tomasz Napierala 1551ec125fbbSEdward Tomasz Napierala /* 1552ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1553ec125fbbSEdward Tomasz Napierala */ 1554ec125fbbSEdward Tomasz Napierala static int 1555ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1556ec125fbbSEdward Tomasz Napierala { 1557ec125fbbSEdward Tomasz Napierala int error; 1558ec125fbbSEdward Tomasz Napierala char *str; 1559ec125fbbSEdward Tomasz Napierala 15604b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15614b5c9cf6SEdward Tomasz Napierala 1562ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1563ec125fbbSEdward Tomasz Napierala return (EINVAL); 1564ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1565786813aaSEdward Tomasz Napierala return (E2BIG); 1566ec125fbbSEdward Tomasz Napierala 1567ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1568ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1569ec125fbbSEdward Tomasz Napierala if (error != 0) { 1570ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1571ec125fbbSEdward Tomasz Napierala return (error); 1572ec125fbbSEdward Tomasz Napierala } 1573ec125fbbSEdward Tomasz Napierala 1574ec125fbbSEdward Tomasz Napierala *inputstr = str; 1575ec125fbbSEdward Tomasz Napierala 1576ec125fbbSEdward Tomasz Napierala return (0); 1577ec125fbbSEdward Tomasz Napierala } 1578ec125fbbSEdward Tomasz Napierala 1579ec125fbbSEdward Tomasz Napierala /* 1580ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1581ec125fbbSEdward Tomasz Napierala */ 1582ec125fbbSEdward Tomasz Napierala static int 1583ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1584ec125fbbSEdward Tomasz Napierala { 1585ec125fbbSEdward Tomasz Napierala int error; 1586ec125fbbSEdward Tomasz Napierala 15874b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15884b5c9cf6SEdward Tomasz Napierala 1589ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1590ec125fbbSEdward Tomasz Napierala return (0); 1591ec125fbbSEdward Tomasz Napierala 1592ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1593ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1594ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1595ec125fbbSEdward Tomasz Napierala return (ERANGE); 1596ec125fbbSEdward Tomasz Napierala } 1597ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1598ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1599ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1600ec125fbbSEdward Tomasz Napierala return (error); 1601ec125fbbSEdward Tomasz Napierala } 1602ec125fbbSEdward Tomasz Napierala 1603ec125fbbSEdward Tomasz Napierala static struct sbuf * 1604ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1605ec125fbbSEdward Tomasz Napierala { 1606ec125fbbSEdward Tomasz Napierala int i; 1607ec125fbbSEdward Tomasz Napierala int64_t amount; 1608ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1609ec125fbbSEdward Tomasz Napierala 16104b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 16114b5c9cf6SEdward Tomasz Napierala 1612ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1613ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 16144fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1615ec125fbbSEdward Tomasz Napierala continue; 1616ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 161785a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1618cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1619ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1620ec125fbbSEdward Tomasz Napierala } 1621ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1622ec125fbbSEdward Tomasz Napierala return (sb); 1623ec125fbbSEdward Tomasz Napierala } 1624ec125fbbSEdward Tomasz Napierala 1625ec125fbbSEdward Tomasz Napierala int 16268451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1627ec125fbbSEdward Tomasz Napierala { 1628ec125fbbSEdward Tomasz Napierala int error; 1629ec125fbbSEdward Tomasz Napierala char *inputstr; 1630ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1631ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1632ec125fbbSEdward Tomasz Napierala struct proc *p; 1633ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1634ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1635a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1636ec125fbbSEdward Tomasz Napierala 16374b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16384b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16394b5c9cf6SEdward Tomasz Napierala 1640415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1641ec125fbbSEdward Tomasz Napierala if (error != 0) 1642ec125fbbSEdward Tomasz Napierala return (error); 1643ec125fbbSEdward Tomasz Napierala 1644ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1645ec125fbbSEdward Tomasz Napierala if (error != 0) 1646ec125fbbSEdward Tomasz Napierala return (error); 1647ec125fbbSEdward Tomasz Napierala 1648ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1649ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1650ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1651ec125fbbSEdward Tomasz Napierala if (error != 0) { 1652ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1653ec125fbbSEdward Tomasz Napierala return (error); 1654ec125fbbSEdward Tomasz Napierala } 1655ec125fbbSEdward Tomasz Napierala 1656ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1657ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1658ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1659ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1660ec125fbbSEdward Tomasz Napierala error = EINVAL; 1661ec125fbbSEdward Tomasz Napierala goto out; 1662ec125fbbSEdward Tomasz Napierala } 1663ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1664ec125fbbSEdward Tomasz Napierala break; 1665ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1666ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1667ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1668ec125fbbSEdward Tomasz Napierala error = EINVAL; 1669ec125fbbSEdward Tomasz Napierala goto out; 1670ec125fbbSEdward Tomasz Napierala } 1671ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1672ec125fbbSEdward Tomasz Napierala break; 1673ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1674415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1675ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1676ec125fbbSEdward Tomasz Napierala error = EINVAL; 1677ec125fbbSEdward Tomasz Napierala goto out; 1678ec125fbbSEdward Tomasz Napierala } 1679ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1680ec125fbbSEdward Tomasz Napierala break; 1681ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1682a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1683a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1684ec125fbbSEdward Tomasz Napierala error = EINVAL; 1685ec125fbbSEdward Tomasz Napierala goto out; 1686ec125fbbSEdward Tomasz Napierala } 1687a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1688ec125fbbSEdward Tomasz Napierala break; 1689ec125fbbSEdward Tomasz Napierala default: 1690ec125fbbSEdward Tomasz Napierala error = EINVAL; 1691ec125fbbSEdward Tomasz Napierala } 1692ec125fbbSEdward Tomasz Napierala out: 1693ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1694ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1695ec125fbbSEdward Tomasz Napierala if (error != 0) 1696ec125fbbSEdward Tomasz Napierala return (error); 1697ec125fbbSEdward Tomasz Napierala 1698ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1699ec125fbbSEdward Tomasz Napierala 1700ec125fbbSEdward Tomasz Napierala return (error); 1701ec125fbbSEdward Tomasz Napierala } 1702ec125fbbSEdward Tomasz Napierala 1703ec125fbbSEdward Tomasz Napierala static void 1704ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1705ec125fbbSEdward Tomasz Napierala { 1706ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1707ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1708ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1709ec125fbbSEdward Tomasz Napierala 17104b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 17114c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 17124b5c9cf6SEdward Tomasz Napierala 1713ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1714ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1715ec125fbbSEdward Tomasz Napierala continue; 1716ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1717ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1718ec125fbbSEdward Tomasz Napierala } 1719ec125fbbSEdward Tomasz Napierala } 1720ec125fbbSEdward Tomasz Napierala 1721ec125fbbSEdward Tomasz Napierala int 17228451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1723ec125fbbSEdward Tomasz Napierala { 1724ec125fbbSEdward Tomasz Napierala int error; 17252b4035eeSEdward Tomasz Napierala size_t bufsize; 1726ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1727ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1728ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1729ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1730ec125fbbSEdward Tomasz Napierala struct proc *p; 1731ec125fbbSEdward Tomasz Napierala 17324b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17334b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17344b5c9cf6SEdward Tomasz Napierala 1735ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1736ec125fbbSEdward Tomasz Napierala if (error != 0) 1737ec125fbbSEdward Tomasz Napierala return (error); 1738ec125fbbSEdward Tomasz Napierala 1739ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1740ec125fbbSEdward Tomasz Napierala if (error != 0) 1741ec125fbbSEdward Tomasz Napierala return (error); 1742ec125fbbSEdward Tomasz Napierala 1743ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1744ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1745ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1746ec125fbbSEdward Tomasz Napierala if (error != 0) { 1747ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1748ec125fbbSEdward Tomasz Napierala return (error); 1749ec125fbbSEdward Tomasz Napierala } 1750ec125fbbSEdward Tomasz Napierala 17512b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 17522b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 17532b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 17542b4035eeSEdward Tomasz Napierala return (E2BIG); 17552b4035eeSEdward Tomasz Napierala } 17562b4035eeSEdward Tomasz Napierala 1757ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1758ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1759ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1760ec125fbbSEdward Tomasz Napierala 1761ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 17624c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1763ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1764ec125fbbSEdward Tomasz Napierala /* 1765ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1766ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1767ec125fbbSEdward Tomasz Napierala */ 1768ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1769ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1770ec125fbbSEdward Tomasz Napierala continue; 1771ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1772ec125fbbSEdward Tomasz Napierala continue; 1773ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1774ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1775ec125fbbSEdward Tomasz Napierala } 17764c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 1777ec125fbbSEdward Tomasz Napierala } 1778ec125fbbSEdward Tomasz Napierala 177915db3c07SEdward Tomasz Napierala loginclass_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 ui_racct_foreach(rctl_get_rules_callback, 178315db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 178415db3c07SEdward Tomasz Napierala filter, sb); 178515db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 178615db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 178715db3c07SEdward Tomasz Napierala filter, sb); 1788ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 17892b4035eeSEdward Tomasz Napierala error = ERANGE; 17902b4035eeSEdward Tomasz Napierala goto out; 1791ec125fbbSEdward Tomasz Napierala } 1792ec125fbbSEdward Tomasz Napierala 1793ec125fbbSEdward Tomasz Napierala /* 1794ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1795ec125fbbSEdward Tomasz Napierala */ 1796ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1797ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1798ec125fbbSEdward Tomasz Napierala 1799ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 18002b4035eeSEdward Tomasz Napierala out: 1801ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1802ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1803ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1804ec125fbbSEdward Tomasz Napierala return (error); 1805ec125fbbSEdward Tomasz Napierala } 1806ec125fbbSEdward Tomasz Napierala 1807ec125fbbSEdward Tomasz Napierala int 18088451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1809ec125fbbSEdward Tomasz Napierala { 1810ec125fbbSEdward Tomasz Napierala int error; 18112b4035eeSEdward Tomasz Napierala size_t bufsize; 1812ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1813ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1814ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1815ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1816ec125fbbSEdward Tomasz Napierala 18174b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18184b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18194b5c9cf6SEdward Tomasz Napierala 1820ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1821ec125fbbSEdward Tomasz Napierala if (error != 0) 1822ec125fbbSEdward Tomasz Napierala return (error); 1823ec125fbbSEdward Tomasz Napierala 1824ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1825ec125fbbSEdward Tomasz Napierala if (error != 0) 1826ec125fbbSEdward Tomasz Napierala return (error); 1827ec125fbbSEdward Tomasz Napierala 1828ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1829ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1830ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1831ec125fbbSEdward Tomasz Napierala if (error != 0) { 1832ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1833ec125fbbSEdward Tomasz Napierala return (error); 1834ec125fbbSEdward Tomasz Napierala } 1835ec125fbbSEdward Tomasz Napierala 1836ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1837ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1838ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1839ec125fbbSEdward Tomasz Napierala return (EINVAL); 1840ec125fbbSEdward Tomasz Napierala } 1841ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1842ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1843ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1844ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1845ec125fbbSEdward Tomasz Napierala } 1846ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1847ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1848ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1849ec125fbbSEdward Tomasz Napierala return (EINVAL); 1850ec125fbbSEdward Tomasz Napierala } 1851ec125fbbSEdward Tomasz Napierala 18522b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 18532b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 18542b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 18552b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 18562b4035eeSEdward Tomasz Napierala return (E2BIG); 18572b4035eeSEdward Tomasz Napierala } 18582b4035eeSEdward Tomasz Napierala 1859ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1860ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1861ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1862ec125fbbSEdward Tomasz Napierala 18634c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1864ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1865ec125fbbSEdward Tomasz Napierala rrl_next) { 1866ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1867ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1868ec125fbbSEdward Tomasz Napierala } 18694c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 1870ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 18712b4035eeSEdward Tomasz Napierala error = ERANGE; 18722b4035eeSEdward Tomasz Napierala goto out; 1873ec125fbbSEdward Tomasz Napierala } 1874ec125fbbSEdward Tomasz Napierala 1875ec125fbbSEdward Tomasz Napierala /* 1876ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1877ec125fbbSEdward Tomasz Napierala */ 1878ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1879ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1880ec125fbbSEdward Tomasz Napierala 1881ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 18822b4035eeSEdward Tomasz Napierala out: 1883ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1884ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1885ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1886ec125fbbSEdward Tomasz Napierala return (error); 1887ec125fbbSEdward Tomasz Napierala } 1888ec125fbbSEdward Tomasz Napierala 1889ec125fbbSEdward Tomasz Napierala int 18908451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1891ec125fbbSEdward Tomasz Napierala { 1892ec125fbbSEdward Tomasz Napierala int error; 1893ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1894ec125fbbSEdward Tomasz Napierala char *inputstr; 1895ec125fbbSEdward Tomasz Napierala 18964b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18974b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18984b5c9cf6SEdward Tomasz Napierala 1899ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1900ec125fbbSEdward Tomasz Napierala if (error != 0) 1901ec125fbbSEdward Tomasz Napierala return (error); 1902ec125fbbSEdward Tomasz Napierala 1903ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1904ec125fbbSEdward Tomasz Napierala if (error != 0) 1905ec125fbbSEdward Tomasz Napierala return (error); 1906ec125fbbSEdward Tomasz Napierala 1907ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1908ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1909ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1910ec125fbbSEdward Tomasz Napierala if (error != 0) { 1911ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1912ec125fbbSEdward Tomasz Napierala return (error); 1913ec125fbbSEdward Tomasz Napierala } 1914ec125fbbSEdward Tomasz Napierala /* 1915ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1916ec125fbbSEdward Tomasz Napierala */ 1917ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1918ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1919ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1920ec125fbbSEdward Tomasz Napierala 1921ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1922ec125fbbSEdward Tomasz Napierala error = EINVAL; 1923ec125fbbSEdward Tomasz Napierala goto out; 1924ec125fbbSEdward Tomasz Napierala } 1925ec125fbbSEdward Tomasz Napierala 1926ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1927ec125fbbSEdward Tomasz Napierala 1928ec125fbbSEdward Tomasz Napierala out: 1929ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1930ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1931ec125fbbSEdward Tomasz Napierala return (error); 1932ec125fbbSEdward Tomasz Napierala } 1933ec125fbbSEdward Tomasz Napierala 1934ec125fbbSEdward Tomasz Napierala int 19358451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1936ec125fbbSEdward Tomasz Napierala { 1937ec125fbbSEdward Tomasz Napierala int error; 1938ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1939ec125fbbSEdward Tomasz Napierala char *inputstr; 1940ec125fbbSEdward Tomasz Napierala 19414b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19424b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 19434b5c9cf6SEdward Tomasz Napierala 1944ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1945ec125fbbSEdward Tomasz Napierala if (error != 0) 1946ec125fbbSEdward Tomasz Napierala return (error); 1947ec125fbbSEdward Tomasz Napierala 1948ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1949ec125fbbSEdward Tomasz Napierala if (error != 0) 1950ec125fbbSEdward Tomasz Napierala return (error); 1951ec125fbbSEdward Tomasz Napierala 1952ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1953ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1954ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1955ec125fbbSEdward Tomasz Napierala if (error != 0) { 1956ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1957ec125fbbSEdward Tomasz Napierala return (error); 1958ec125fbbSEdward Tomasz Napierala } 1959ec125fbbSEdward Tomasz Napierala 1960ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1961ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1962ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1963ec125fbbSEdward Tomasz Napierala 1964ec125fbbSEdward Tomasz Napierala return (error); 1965ec125fbbSEdward Tomasz Napierala } 1966ec125fbbSEdward Tomasz Napierala 1967ec125fbbSEdward Tomasz Napierala /* 1968ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1969ec125fbbSEdward Tomasz Napierala */ 1970ec125fbbSEdward Tomasz Napierala void 1971ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1972ec125fbbSEdward Tomasz Napierala { 1973ec125fbbSEdward Tomasz Napierala int rulecnt, i; 1974ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1975ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1976ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1977a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1978ec125fbbSEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1979ec125fbbSEdward Tomasz Napierala 19804b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 19814b5c9cf6SEdward Tomasz Napierala 1982ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1983ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1984a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1985ec125fbbSEdward Tomasz Napierala 1986ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1987ec125fbbSEdward Tomasz Napierala 1988ec125fbbSEdward Tomasz Napierala again: 1989ec125fbbSEdward Tomasz Napierala /* 1990ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1991ec125fbbSEdward Tomasz Napierala * credentials. 1992ec125fbbSEdward Tomasz Napierala */ 1993ec125fbbSEdward Tomasz Napierala rulecnt = 0; 19944c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1995ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1996ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1997ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1998ec125fbbSEdward Tomasz Napierala rulecnt++; 1999ec125fbbSEdward Tomasz Napierala } 2000ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 2001ec125fbbSEdward Tomasz Napierala rulecnt++; 2002ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 2003ec125fbbSEdward Tomasz Napierala rulecnt++; 2004a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 2005ec125fbbSEdward Tomasz Napierala rulecnt++; 20064c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 2007ec125fbbSEdward Tomasz Napierala 2008ec125fbbSEdward Tomasz Napierala /* 2009ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 2010ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 2011ec125fbbSEdward Tomasz Napierala */ 2012ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 2013ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 2014ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 2015ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 2016ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 2017ec125fbbSEdward Tomasz Napierala } 2018ec125fbbSEdward Tomasz Napierala 2019ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2020ec125fbbSEdward Tomasz Napierala 2021ec125fbbSEdward Tomasz Napierala /* 2022ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 2023ec125fbbSEdward Tomasz Napierala */ 20244c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 2025ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 2026ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2027ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2028ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2029ec125fbbSEdward Tomasz Napierala goto goaround; 2030ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2031ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2032ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2033ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2034ec125fbbSEdward Tomasz Napierala rulecnt--; 2035ec125fbbSEdward Tomasz Napierala } 2036ec125fbbSEdward Tomasz Napierala } 2037ec125fbbSEdward Tomasz Napierala 2038ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 2039ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2040ec125fbbSEdward Tomasz Napierala goto goaround; 2041ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2042ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2043ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2044ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2045ec125fbbSEdward Tomasz Napierala rulecnt--; 2046ec125fbbSEdward Tomasz Napierala } 2047ec125fbbSEdward Tomasz Napierala 2048ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 2049ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2050ec125fbbSEdward Tomasz Napierala goto goaround; 2051ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2052ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2053ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2054ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2055ec125fbbSEdward Tomasz Napierala rulecnt--; 2056ec125fbbSEdward Tomasz Napierala } 2057ec125fbbSEdward Tomasz Napierala 2058a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 2059ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2060ec125fbbSEdward Tomasz Napierala goto goaround; 2061ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2062ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2063ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2064ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2065ec125fbbSEdward Tomasz Napierala rulecnt--; 2066ec125fbbSEdward Tomasz Napierala } 2067ec125fbbSEdward Tomasz Napierala 2068ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 2069ec125fbbSEdward Tomasz Napierala /* 2070ec125fbbSEdward Tomasz Napierala * Free the old rule list. 2071ec125fbbSEdward Tomasz Napierala */ 2072ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 2073ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 2074ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2075ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2076ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2077ec125fbbSEdward Tomasz Napierala } 2078ec125fbbSEdward Tomasz Napierala 2079ec125fbbSEdward Tomasz Napierala /* 2080ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 2081ec125fbbSEdward Tomasz Napierala * 2082ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 2083ec125fbbSEdward Tomasz Napierala * of iterating here? 2084ec125fbbSEdward Tomasz Napierala */ 2085ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2086ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2087ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2088ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 2089ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 2090ec125fbbSEdward Tomasz Napierala } 2091ec125fbbSEdward Tomasz Napierala 20924c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2093ec125fbbSEdward Tomasz Napierala 2094ec125fbbSEdward Tomasz Napierala return; 2095ec125fbbSEdward Tomasz Napierala } 2096ec125fbbSEdward Tomasz Napierala 2097ec125fbbSEdward Tomasz Napierala goaround: 20984c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2099ec125fbbSEdward Tomasz Napierala 2100ec125fbbSEdward Tomasz Napierala /* 2101ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 2102ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 2103ec125fbbSEdward Tomasz Napierala */ 2104ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2105ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2106ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2107ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 2108ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 2109ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 2110ec125fbbSEdward Tomasz Napierala } 2111ec125fbbSEdward Tomasz Napierala 2112ec125fbbSEdward Tomasz Napierala goto again; 2113ec125fbbSEdward Tomasz Napierala } 2114ec125fbbSEdward Tomasz Napierala 2115ec125fbbSEdward Tomasz Napierala /* 2116ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 2117ec125fbbSEdward Tomasz Napierala */ 2118ec125fbbSEdward Tomasz Napierala int 2119ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 2120ec125fbbSEdward Tomasz Napierala { 2121ec125fbbSEdward Tomasz Napierala int error; 2122ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 2123ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 2124ec125fbbSEdward Tomasz Napierala 2125ec125fbbSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 2126ec125fbbSEdward Tomasz Napierala 21274b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 21280b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 2129ec125fbbSEdward Tomasz Napierala 21304c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 2131ec125fbbSEdward Tomasz Napierala 2132ec125fbbSEdward Tomasz Napierala /* 2133ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 2134ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 2135ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 2136ec125fbbSEdward Tomasz Napierala */ 2137ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 2138ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2139ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2140ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 2141ec125fbbSEdward Tomasz Napierala if (rule == NULL) 2142ec125fbbSEdward Tomasz Napierala goto fail; 2143ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 2144ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 2145ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 2146ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2147ec125fbbSEdward Tomasz Napierala rule); 2148ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 2149ec125fbbSEdward Tomasz Napierala if (error != 0) 2150ec125fbbSEdward Tomasz Napierala goto fail; 2151ec125fbbSEdward Tomasz Napierala } else { 2152ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2153ec125fbbSEdward Tomasz Napierala link->rrl_rule); 2154ec125fbbSEdward Tomasz Napierala if (error != 0) 2155ec125fbbSEdward Tomasz Napierala goto fail; 2156ec125fbbSEdward Tomasz Napierala } 2157ec125fbbSEdward Tomasz Napierala } 2158ec125fbbSEdward Tomasz Napierala 21594c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2160ec125fbbSEdward Tomasz Napierala return (0); 2161ec125fbbSEdward Tomasz Napierala 2162ec125fbbSEdward Tomasz Napierala fail: 2163ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 2164ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 2165ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2166ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2167ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2168ec125fbbSEdward Tomasz Napierala } 21694c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2170ec125fbbSEdward Tomasz Napierala return (EAGAIN); 2171ec125fbbSEdward Tomasz Napierala } 2172ec125fbbSEdward Tomasz Napierala 2173ec125fbbSEdward Tomasz Napierala /* 2174ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 2175ec125fbbSEdward Tomasz Napierala */ 2176ec125fbbSEdward Tomasz Napierala void 2177ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 2178ec125fbbSEdward Tomasz Napierala { 2179ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 2180ec125fbbSEdward Tomasz Napierala 21814b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 21824b5c9cf6SEdward Tomasz Napierala 21834c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 2184ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 2185ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 2186ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2187ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2188ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2189ec125fbbSEdward Tomasz Napierala } 21904c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 2191ec125fbbSEdward Tomasz Napierala } 2192ec125fbbSEdward Tomasz Napierala 2193ec125fbbSEdward Tomasz Napierala static void 2194ec125fbbSEdward Tomasz Napierala rctl_init(void) 2195ec125fbbSEdward Tomasz Napierala { 2196ec125fbbSEdward Tomasz Napierala 21974b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 21984b5c9cf6SEdward Tomasz Napierala return; 21994b5c9cf6SEdward Tomasz Napierala 2200ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 2201ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 2202ec125fbbSEdward Tomasz Napierala UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 2203ec125fbbSEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 2204ec125fbbSEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 2205ae34b6ffSEdward Tomasz Napierala 22068bd8c8f1SEdward Tomasz Napierala /* 22078bd8c8f1SEdward Tomasz Napierala * Set default values, making sure not to overwrite the ones 22088bd8c8f1SEdward Tomasz Napierala * fetched from tunables. Most of those could be set at the 22098bd8c8f1SEdward Tomasz Napierala * declaration, except for the rctl_throttle_max - we cannot 22108bd8c8f1SEdward Tomasz Napierala * set it there due to hz not being compile time constant. 22118bd8c8f1SEdward Tomasz Napierala */ 22128bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_min < 1) 2213ae34b6ffSEdward Tomasz Napierala rctl_throttle_min = 1; 22148bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_max < rctl_throttle_min) 2215ae34b6ffSEdward Tomasz Napierala rctl_throttle_max = 2 * hz; 22168bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct < 0) 2217ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct = 100; 22188bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct2 < 0) 2219ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct2 = 100; 2220ec125fbbSEdward Tomasz Napierala } 2221ec125fbbSEdward Tomasz Napierala 2222ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 2223ec125fbbSEdward Tomasz Napierala 2224ec125fbbSEdward Tomasz Napierala int 22258451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 2226ec125fbbSEdward Tomasz Napierala { 2227ec125fbbSEdward Tomasz Napierala 2228ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2229ec125fbbSEdward Tomasz Napierala } 2230ec125fbbSEdward Tomasz Napierala 2231ec125fbbSEdward Tomasz Napierala int 22328451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 2233ec125fbbSEdward Tomasz Napierala { 2234ec125fbbSEdward Tomasz Napierala 2235ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2236ec125fbbSEdward Tomasz Napierala } 2237ec125fbbSEdward Tomasz Napierala 2238ec125fbbSEdward Tomasz Napierala int 22398451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 2240ec125fbbSEdward Tomasz Napierala { 2241ec125fbbSEdward Tomasz Napierala 2242ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2243ec125fbbSEdward Tomasz Napierala } 2244ec125fbbSEdward Tomasz Napierala 2245ec125fbbSEdward Tomasz Napierala int 22468451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 2247ec125fbbSEdward Tomasz Napierala { 2248ec125fbbSEdward Tomasz Napierala 2249ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2250ec125fbbSEdward Tomasz Napierala } 2251ec125fbbSEdward Tomasz Napierala 2252ec125fbbSEdward Tomasz Napierala int 22538451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 2254ec125fbbSEdward Tomasz Napierala { 2255ec125fbbSEdward Tomasz Napierala 2256ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2257ec125fbbSEdward Tomasz Napierala } 2258ec125fbbSEdward Tomasz Napierala 2259ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 2260