1ec125fbbSEdward Tomasz Napierala /*- 2ec125fbbSEdward Tomasz Napierala * Copyright (c) 2010 The FreeBSD Foundation 3ec125fbbSEdward Tomasz Napierala * All rights reserved. 4ec125fbbSEdward Tomasz Napierala * 5ec125fbbSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 6ec125fbbSEdward Tomasz Napierala * from the FreeBSD Foundation. 7ec125fbbSEdward Tomasz Napierala * 8ec125fbbSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 9ec125fbbSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 10ec125fbbSEdward Tomasz Napierala * are met: 11ec125fbbSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 12ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 13ec125fbbSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 14ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 15ec125fbbSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 16ec125fbbSEdward Tomasz Napierala * 17ec125fbbSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18ec125fbbSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19ec125fbbSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20ec125fbbSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21ec125fbbSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22ec125fbbSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23ec125fbbSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24ec125fbbSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25ec125fbbSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26ec125fbbSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27ec125fbbSEdward Tomasz Napierala * SUCH DAMAGE. 28ec125fbbSEdward Tomasz Napierala * 29ec125fbbSEdward Tomasz Napierala * $FreeBSD$ 30ec125fbbSEdward Tomasz Napierala */ 31ec125fbbSEdward Tomasz Napierala 32ec125fbbSEdward Tomasz Napierala #include <sys/cdefs.h> 33ec125fbbSEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 34ec125fbbSEdward Tomasz Napierala 35ec125fbbSEdward Tomasz Napierala #include <sys/param.h> 36ec125fbbSEdward Tomasz Napierala #include <sys/bus.h> 37ec125fbbSEdward Tomasz Napierala #include <sys/malloc.h> 38ec125fbbSEdward Tomasz Napierala #include <sys/queue.h> 39ec125fbbSEdward Tomasz Napierala #include <sys/refcount.h> 40ec125fbbSEdward Tomasz Napierala #include <sys/jail.h> 41ec125fbbSEdward Tomasz Napierala #include <sys/kernel.h> 42ec125fbbSEdward Tomasz Napierala #include <sys/limits.h> 43ec125fbbSEdward Tomasz Napierala #include <sys/loginclass.h> 44ec125fbbSEdward Tomasz Napierala #include <sys/priv.h> 45ec125fbbSEdward Tomasz Napierala #include <sys/proc.h> 46ec125fbbSEdward Tomasz Napierala #include <sys/racct.h> 47ec125fbbSEdward Tomasz Napierala #include <sys/rctl.h> 48ec125fbbSEdward Tomasz Napierala #include <sys/resourcevar.h> 49ec125fbbSEdward Tomasz Napierala #include <sys/sx.h> 50ec125fbbSEdward Tomasz Napierala #include <sys/sysent.h> 51ec125fbbSEdward Tomasz Napierala #include <sys/sysproto.h> 52ec125fbbSEdward Tomasz Napierala #include <sys/systm.h> 53ec125fbbSEdward Tomasz Napierala #include <sys/types.h> 54ec125fbbSEdward Tomasz Napierala #include <sys/eventhandler.h> 55ec125fbbSEdward Tomasz Napierala #include <sys/lock.h> 56ec125fbbSEdward Tomasz Napierala #include <sys/mutex.h> 57ec125fbbSEdward Tomasz Napierala #include <sys/rwlock.h> 58ec125fbbSEdward Tomasz Napierala #include <sys/sbuf.h> 59ec125fbbSEdward Tomasz Napierala #include <sys/taskqueue.h> 60ec125fbbSEdward Tomasz Napierala #include <sys/tree.h> 61ec125fbbSEdward Tomasz Napierala #include <vm/uma.h> 62ec125fbbSEdward Tomasz Napierala 63ec125fbbSEdward Tomasz Napierala #ifdef RCTL 64ec125fbbSEdward Tomasz Napierala #ifndef RACCT 65ec125fbbSEdward Tomasz Napierala #error "The RCTL option requires the RACCT option" 66ec125fbbSEdward Tomasz Napierala #endif 67ec125fbbSEdward Tomasz Napierala 68ec125fbbSEdward Tomasz Napierala FEATURE(rctl, "Resource Limits"); 69ec125fbbSEdward Tomasz Napierala 70ec125fbbSEdward Tomasz Napierala #define HRF_DEFAULT 0 71ec125fbbSEdward Tomasz Napierala #define HRF_DONT_INHERIT 1 72ec125fbbSEdward Tomasz Napierala #define HRF_DONT_ACCUMULATE 2 73ec125fbbSEdward Tomasz Napierala 74ea228b48SEdward Tomasz Napierala #define RCTL_MAX_INBUFSIZE 4 * 1024 75ea228b48SEdward Tomasz Napierala #define RCTL_MAX_OUTBUFSIZE 16 * 1024 * 1024 76ec125fbbSEdward Tomasz Napierala #define RCTL_LOG_BUFSIZE 128 77ec125fbbSEdward Tomasz Napierala 7836af9869SEdward Tomasz Napierala #define RCTL_PCPU_SHIFT (10 * 1000000) 7936af9869SEdward Tomasz Napierala 80ae34b6ffSEdward Tomasz Napierala static unsigned int rctl_maxbufsize = RCTL_MAX_OUTBUFSIZE; 81f70c075eSEdward Tomasz Napierala static int rctl_log_rate_limit = 10; 82f70c075eSEdward Tomasz Napierala static int rctl_devctl_rate_limit = 10; 838bd8c8f1SEdward Tomasz Napierala 848bd8c8f1SEdward Tomasz Napierala /* 858bd8c8f1SEdward Tomasz Napierala * Values below are initialized in rctl_init(). 868bd8c8f1SEdward Tomasz Napierala */ 878bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min = -1; 888bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max = -1; 898bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct = -1; 908bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2 = -1; 918bd8c8f1SEdward Tomasz Napierala 928bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS); 938bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS); 948bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS); 958bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS); 962b4035eeSEdward Tomasz Napierala 972b4035eeSEdward Tomasz Napierala SYSCTL_NODE(_kern_racct, OID_AUTO, rctl, CTLFLAG_RW, 0, "Resource Limits"); 982b4035eeSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, maxbufsize, CTLFLAG_RWTUN, 992b4035eeSEdward Tomasz Napierala &rctl_maxbufsize, 0, "Maximum output buffer size"); 100f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW, 101f70c075eSEdward Tomasz Napierala &rctl_log_rate_limit, 0, "Maximum number of log messages per second"); 1028bd8c8f1SEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RWTUN, 103f70c075eSEdward Tomasz Napierala &rctl_devctl_rate_limit, 0, "Maximum number of devctl messages per second"); 1048bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_min, 1058bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_min_sysctl, "IU", 1068bd8c8f1SEdward Tomasz Napierala "Shortest throttling duration, in hz"); 1078bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_min", &rctl_throttle_min); 1088bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_max, 1098bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_max_sysctl, "IU", 1108bd8c8f1SEdward Tomasz Napierala "Longest throttling duration, in hz"); 1118bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_max", &rctl_throttle_max); 1128bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct, 1138bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_pct_sysctl, "IU", 114ae34b6ffSEdward Tomasz Napierala "Throttling penalty for process consumption, in percent"); 1158bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct", &rctl_throttle_pct); 1168bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct2, 1178bd8c8f1SEdward Tomasz Napierala CTLTYPE_UINT | CTLFLAG_RWTUN, 0, 0, &rctl_throttle_pct2_sysctl, "IU", 118ae34b6ffSEdward Tomasz Napierala "Throttling penalty for container consumption, in percent"); 1198bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct2", &rctl_throttle_pct2); 1202b4035eeSEdward Tomasz Napierala 121ec125fbbSEdward Tomasz Napierala /* 122ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 123ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 124ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 125ec125fbbSEdward Tomasz Napierala */ 126ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 127ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 128ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 129ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 130ec125fbbSEdward Tomasz Napierala }; 131ec125fbbSEdward Tomasz Napierala 132ec125fbbSEdward Tomasz Napierala struct dict { 133ec125fbbSEdward Tomasz Napierala const char *d_name; 134ec125fbbSEdward Tomasz Napierala int d_value; 135ec125fbbSEdward Tomasz Napierala }; 136ec125fbbSEdward Tomasz Napierala 137ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 138ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 139ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 140ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 141ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 142ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 143ec125fbbSEdward Tomasz Napierala 144ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 14585a2f1b4SEdward Tomasz Napierala { "cputime", RACCT_CPU }, 14685a2f1b4SEdward Tomasz Napierala { "datasize", RACCT_DATA }, 14785a2f1b4SEdward Tomasz Napierala { "stacksize", RACCT_STACK }, 14885a2f1b4SEdward Tomasz Napierala { "coredumpsize", RACCT_CORE }, 14985a2f1b4SEdward Tomasz Napierala { "memoryuse", RACCT_RSS }, 15085a2f1b4SEdward Tomasz Napierala { "memorylocked", RACCT_MEMLOCK }, 15185a2f1b4SEdward Tomasz Napierala { "maxproc", RACCT_NPROC }, 15285a2f1b4SEdward Tomasz Napierala { "openfiles", RACCT_NOFILE }, 15385a2f1b4SEdward Tomasz Napierala { "vmemoryuse", RACCT_VMEM }, 15485a2f1b4SEdward Tomasz Napierala { "pseudoterminals", RACCT_NPTS }, 15585a2f1b4SEdward Tomasz Napierala { "swapuse", RACCT_SWAP }, 156ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 157ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 158ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 159ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 160ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 161ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 162ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 163ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 164ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 16536af9869SEdward Tomasz Napierala { "pcpu", RACCT_PCTCPU }, 166ae34b6ffSEdward Tomasz Napierala { "readbps", RACCT_READBPS }, 167ae34b6ffSEdward Tomasz Napierala { "writebps", RACCT_WRITEBPS }, 168ae34b6ffSEdward Tomasz Napierala { "readiops", RACCT_READIOPS }, 169ae34b6ffSEdward Tomasz Napierala { "writeiops", RACCT_WRITEIOPS }, 170ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 171ec125fbbSEdward Tomasz Napierala 172ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 173ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 174ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 175ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 176ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 177ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 178ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 179ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 180ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 181ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 182ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 183ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 184ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 185ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 186ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 187ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 188ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 189ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 190ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 191ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 192ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 193ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 194ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 195ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 196ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 197ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 198ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 199ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 200ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 201ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 202ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 203ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 204ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 205ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 206ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 207ae34b6ffSEdward Tomasz Napierala { "throttle", RCTL_ACTION_THROTTLE }, 208ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 209ec125fbbSEdward Tomasz Napierala 210ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 211ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 212ec125fbbSEdward Tomasz Napierala 213ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 214c1a43e73SEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 2154c230cdaSEdward Tomasz Napierala 216ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 217ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 218ec125fbbSEdward Tomasz Napierala 219d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 220ec125fbbSEdward Tomasz Napierala 2218bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS) 2228bd8c8f1SEdward Tomasz Napierala { 223c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_min; 2248bd8c8f1SEdward Tomasz Napierala 2258bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2268bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2278bd8c8f1SEdward Tomasz Napierala return (error); 2288bd8c8f1SEdward Tomasz Napierala if (val < 1 || val > rctl_throttle_max) 2298bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2308bd8c8f1SEdward Tomasz Napierala 231*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2328bd8c8f1SEdward Tomasz Napierala rctl_throttle_min = val; 233*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2348bd8c8f1SEdward Tomasz Napierala 2358bd8c8f1SEdward Tomasz Napierala return (0); 2368bd8c8f1SEdward Tomasz Napierala } 2378bd8c8f1SEdward Tomasz Napierala 2388bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS) 2398bd8c8f1SEdward Tomasz Napierala { 240c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_max; 2418bd8c8f1SEdward Tomasz Napierala 2428bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2438bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2448bd8c8f1SEdward Tomasz Napierala return (error); 2458bd8c8f1SEdward Tomasz Napierala if (val < rctl_throttle_min) 2468bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2478bd8c8f1SEdward Tomasz Napierala 248*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2498bd8c8f1SEdward Tomasz Napierala rctl_throttle_max = val; 250*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2518bd8c8f1SEdward Tomasz Napierala 2528bd8c8f1SEdward Tomasz Napierala return (0); 2538bd8c8f1SEdward Tomasz Napierala } 2548bd8c8f1SEdward Tomasz Napierala 2558bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS) 2568bd8c8f1SEdward Tomasz Napierala { 257c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct; 2588bd8c8f1SEdward Tomasz Napierala 2598bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2608bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2618bd8c8f1SEdward Tomasz Napierala return (error); 2628bd8c8f1SEdward Tomasz Napierala if (val < 0) 2638bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2648bd8c8f1SEdward Tomasz Napierala 265*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2668bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct = val; 267*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2688bd8c8f1SEdward Tomasz Napierala 2698bd8c8f1SEdward Tomasz Napierala return (0); 2708bd8c8f1SEdward Tomasz Napierala } 2718bd8c8f1SEdward Tomasz Napierala 2728bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS) 2738bd8c8f1SEdward Tomasz Napierala { 274c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct2; 2758bd8c8f1SEdward Tomasz Napierala 2768bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2778bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2788bd8c8f1SEdward Tomasz Napierala return (error); 2798bd8c8f1SEdward Tomasz Napierala if (val < 0) 2808bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2818bd8c8f1SEdward Tomasz Napierala 282*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2838bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct2 = val; 284*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2858bd8c8f1SEdward Tomasz Napierala 2868bd8c8f1SEdward Tomasz Napierala return (0); 2878bd8c8f1SEdward Tomasz Napierala } 2888bd8c8f1SEdward Tomasz Napierala 289ec125fbbSEdward Tomasz Napierala static const char * 290ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 291ec125fbbSEdward Tomasz Napierala { 292ec125fbbSEdward Tomasz Napierala int i; 293ec125fbbSEdward Tomasz Napierala 294ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 295ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 296ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 297ec125fbbSEdward Tomasz Napierala } 298ec125fbbSEdward Tomasz Napierala 299ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 300ec125fbbSEdward Tomasz Napierala } 301ec125fbbSEdward Tomasz Napierala 302ec125fbbSEdward Tomasz Napierala static const char * 303ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 304ec125fbbSEdward Tomasz Napierala { 305ec125fbbSEdward Tomasz Napierala int i; 306ec125fbbSEdward Tomasz Napierala 307ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 308ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 309ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 310ec125fbbSEdward Tomasz Napierala } 311ec125fbbSEdward Tomasz Napierala 312ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 313ec125fbbSEdward Tomasz Napierala } 314ec125fbbSEdward Tomasz Napierala 315ec125fbbSEdward Tomasz Napierala const char * 316ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 317ec125fbbSEdward Tomasz Napierala { 318ec125fbbSEdward Tomasz Napierala int i; 319ec125fbbSEdward Tomasz Napierala 320ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 321ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 322ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 323ec125fbbSEdward Tomasz Napierala } 324ec125fbbSEdward Tomasz Napierala 325ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 326ec125fbbSEdward Tomasz Napierala } 327ec125fbbSEdward Tomasz Napierala 328ac3c9819SEdward Tomasz Napierala static struct racct * 329ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 330ac3c9819SEdward Tomasz Napierala { 331ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 332ac3c9819SEdward Tomasz Napierala 333ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 334*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 335ac3c9819SEdward Tomasz Napierala 336ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 337ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 338ac3c9819SEdward Tomasz Napierala return (p->p_racct); 339ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 340ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 341ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 342ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 343ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 344ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 345ac3c9819SEdward Tomasz Napierala default: 346ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 347ac3c9819SEdward Tomasz Napierala } 348ac3c9819SEdward Tomasz Napierala } 349ac3c9819SEdward Tomasz Napierala 350ec125fbbSEdward Tomasz Napierala /* 351ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 352ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 353ec125fbbSEdward Tomasz Napierala */ 354ec125fbbSEdward Tomasz Napierala static int64_t 355ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 356ec125fbbSEdward Tomasz Napierala { 357ac3c9819SEdward Tomasz Napierala const struct racct *racct; 358c1a43e73SEdward Tomasz Napierala int64_t available; 359ec125fbbSEdward Tomasz Napierala 3604b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 361*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 362ec125fbbSEdward Tomasz Napierala 363ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 364ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 365ec125fbbSEdward Tomasz Napierala 366ec125fbbSEdward Tomasz Napierala return (available); 367ec125fbbSEdward Tomasz Napierala } 368ec125fbbSEdward Tomasz Napierala 369ec125fbbSEdward Tomasz Napierala /* 370ae34b6ffSEdward Tomasz Napierala * Called every second for proc, uidinfo, loginclass, and jail containers. 371ae34b6ffSEdward Tomasz Napierala * If the limit isn't exceeded, it decreases the usage amount to zero. 372ae34b6ffSEdward Tomasz Napierala * Otherwise, it decreases it by the value of the limit. This way 373ae34b6ffSEdward Tomasz Napierala * resource consumption exceeding the limit "carries over" to the next 374ae34b6ffSEdward Tomasz Napierala * period. 375ec125fbbSEdward Tomasz Napierala */ 376ae34b6ffSEdward Tomasz Napierala void 377ae34b6ffSEdward Tomasz Napierala rctl_throttle_decay(struct racct *racct, int resource) 378ec125fbbSEdward Tomasz Napierala { 379ae34b6ffSEdward Tomasz Napierala struct rctl_rule *rule; 380ae34b6ffSEdward Tomasz Napierala struct rctl_rule_link *link; 381ae34b6ffSEdward Tomasz Napierala int64_t minavailable; 382ec125fbbSEdward Tomasz Napierala 3834b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 384*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 385ec125fbbSEdward Tomasz Napierala 386ae34b6ffSEdward Tomasz Napierala minavailable = INT64_MAX; 387ec125fbbSEdward Tomasz Napierala 388ae34b6ffSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 389ae34b6ffSEdward Tomasz Napierala rule = link->rrl_rule; 390ae34b6ffSEdward Tomasz Napierala 391ae34b6ffSEdward Tomasz Napierala if (rule->rr_resource != resource) 392ae34b6ffSEdward Tomasz Napierala continue; 393ae34b6ffSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_THROTTLE) 394ae34b6ffSEdward Tomasz Napierala continue; 395ae34b6ffSEdward Tomasz Napierala 396ae34b6ffSEdward Tomasz Napierala if (rule->rr_amount < minavailable) 397ae34b6ffSEdward Tomasz Napierala minavailable = rule->rr_amount; 398ae34b6ffSEdward Tomasz Napierala } 399ae34b6ffSEdward Tomasz Napierala 400ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] < minavailable) { 401ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = 0; 402ae34b6ffSEdward Tomasz Napierala } else { 403ae34b6ffSEdward Tomasz Napierala /* 404ae34b6ffSEdward Tomasz Napierala * Cap utilization counter at ten times the limit. Otherwise, 405ae34b6ffSEdward Tomasz Napierala * if we changed the rule lowering the allowed amount, it could 406ae34b6ffSEdward Tomasz Napierala * take unreasonably long time for the accumulated resource 407ae34b6ffSEdward Tomasz Napierala * usage to drop. 408ae34b6ffSEdward Tomasz Napierala */ 409ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] > minavailable * 10) 410ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = minavailable * 10; 411ae34b6ffSEdward Tomasz Napierala 412ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] -= minavailable; 413ae34b6ffSEdward Tomasz Napierala } 414ec125fbbSEdward Tomasz Napierala } 415ec125fbbSEdward Tomasz Napierala 416ec125fbbSEdward Tomasz Napierala /* 417af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 41836af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 41936af9869SEdward Tomasz Napierala */ 42036af9869SEdward Tomasz Napierala int64_t 42136af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 42236af9869SEdward Tomasz Napierala struct rctl_rule *rule; 42336af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 42436af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 42536af9869SEdward Tomasz Napierala 4264b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 427*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 4284b5c9cf6SEdward Tomasz Napierala 42936af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 43036af9869SEdward Tomasz Napierala limit = 0; 43136af9869SEdward Tomasz Napierala 43236af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 43336af9869SEdward Tomasz Napierala rule = link->rrl_rule; 43436af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 43536af9869SEdward Tomasz Napierala continue; 43636af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 43736af9869SEdward Tomasz Napierala continue; 43836af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 43936af9869SEdward Tomasz Napierala if (available < minavailable) { 44036af9869SEdward Tomasz Napierala minavailable = available; 44136af9869SEdward Tomasz Napierala limit = rule->rr_amount; 44236af9869SEdward Tomasz Napierala } 44336af9869SEdward Tomasz Napierala } 44436af9869SEdward Tomasz Napierala 44536af9869SEdward Tomasz Napierala /* 44636af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 44736af9869SEdward Tomasz Napierala * %cpu resource. This makes %cpu throttling more agressive 44836af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 44936af9869SEdward Tomasz Napierala */ 45036af9869SEdward Tomasz Napierala if (limit != 0) { 45136af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 45236af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 45336af9869SEdward Tomasz Napierala else 45436af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 45536af9869SEdward Tomasz Napierala } 45636af9869SEdward Tomasz Napierala 45736af9869SEdward Tomasz Napierala return (minavailable); 45836af9869SEdward Tomasz Napierala } 45936af9869SEdward Tomasz Napierala 460ae34b6ffSEdward Tomasz Napierala static uint64_t 461ae34b6ffSEdward Tomasz Napierala xadd(uint64_t a, uint64_t b) 462ae34b6ffSEdward Tomasz Napierala { 463ae34b6ffSEdward Tomasz Napierala uint64_t c; 464ae34b6ffSEdward Tomasz Napierala 465ae34b6ffSEdward Tomasz Napierala c = a + b; 466ae34b6ffSEdward Tomasz Napierala 467ae34b6ffSEdward Tomasz Napierala /* 468ae34b6ffSEdward Tomasz Napierala * Detect overflow. 469ae34b6ffSEdward Tomasz Napierala */ 470ae34b6ffSEdward Tomasz Napierala if (c < a || c < b) 471ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 472ae34b6ffSEdward Tomasz Napierala 473ae34b6ffSEdward Tomasz Napierala return (c); 474ae34b6ffSEdward Tomasz Napierala } 475ae34b6ffSEdward Tomasz Napierala 476ae34b6ffSEdward Tomasz Napierala static uint64_t 477ae34b6ffSEdward Tomasz Napierala xmul(uint64_t a, uint64_t b) 478ae34b6ffSEdward Tomasz Napierala { 479ae34b6ffSEdward Tomasz Napierala 480f459a818SEdward Tomasz Napierala if (b != 0 && a > UINT64_MAX / b) 481ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 482ae34b6ffSEdward Tomasz Napierala 483f459a818SEdward Tomasz Napierala return (a * b); 484ae34b6ffSEdward Tomasz Napierala } 485ae34b6ffSEdward Tomasz Napierala 48636af9869SEdward Tomasz Napierala /* 487ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 488ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 489ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 490ec125fbbSEdward Tomasz Napierala */ 491ec125fbbSEdward Tomasz Napierala int 492ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 493ec125fbbSEdward Tomasz Napierala { 494f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 495f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 496ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 497ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 498ec125fbbSEdward Tomasz Napierala struct sbuf sb; 499c1a43e73SEdward Tomasz Napierala char *buf; 500ae34b6ffSEdward Tomasz Napierala int64_t available; 501ae34b6ffSEdward Tomasz Napierala uint64_t sleep_ms, sleep_ratio; 502ec125fbbSEdward Tomasz Napierala int should_deny = 0; 503ec125fbbSEdward Tomasz Napierala 5044b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 505*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 506ec125fbbSEdward Tomasz Napierala 507ec125fbbSEdward Tomasz Napierala /* 508ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 509ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 510ec125fbbSEdward Tomasz Napierala */ 511ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 512ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 513ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 514ec125fbbSEdward Tomasz Napierala continue; 515ae34b6ffSEdward Tomasz Napierala 516ae34b6ffSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 517ae34b6ffSEdward Tomasz Napierala if (available >= (int64_t)amount) { 518ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 519ec125fbbSEdward Tomasz Napierala continue; 520ec125fbbSEdward Tomasz Napierala } 521ec125fbbSEdward Tomasz Napierala 522ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 523ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 524ec125fbbSEdward Tomasz Napierala should_deny = 1; 525ec125fbbSEdward Tomasz Napierala continue; 526ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 527ec125fbbSEdward Tomasz Napierala /* 528ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 529ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 530ec125fbbSEdward Tomasz Napierala */ 531ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 532ec125fbbSEdward Tomasz Napierala continue; 533ec125fbbSEdward Tomasz Napierala 53472a401d9SEdward Tomasz Napierala /* 53572a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 53672a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 53772a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 53872a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 53972a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 54072a401d9SEdward Tomasz Napierala */ 54172a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 54272a401d9SEdward Tomasz Napierala continue; 54372a401d9SEdward Tomasz Napierala 544f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 545f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 546ec125fbbSEdward Tomasz Napierala continue; 547ec125fbbSEdward Tomasz Napierala 548ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 549ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 550ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 551ec125fbbSEdward Tomasz Napierala continue; 552ec125fbbSEdward Tomasz Napierala } 553ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 554ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 555ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 556ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 557ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 558ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 559a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 560ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 561ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 562ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 563ec125fbbSEdward Tomasz Napierala continue; 564ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 565ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 566ec125fbbSEdward Tomasz Napierala continue; 567ec125fbbSEdward Tomasz Napierala 56872a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 56972a401d9SEdward Tomasz Napierala continue; 57072a401d9SEdward Tomasz Napierala 571f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 572f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 573f70c075eSEdward Tomasz Napierala continue; 574f70c075eSEdward Tomasz Napierala 575ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 576ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 577ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 578ec125fbbSEdward Tomasz Napierala continue; 579ec125fbbSEdward Tomasz Napierala } 580ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 581ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 582ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 583ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 584ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 585a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 586ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 587ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 588ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 589ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 590ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 591ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 592ec125fbbSEdward Tomasz Napierala continue; 593ae34b6ffSEdward Tomasz Napierala case RCTL_ACTION_THROTTLE: 594ae34b6ffSEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 595ae34b6ffSEdward Tomasz Napierala continue; 596ae34b6ffSEdward Tomasz Napierala 597ae34b6ffSEdward Tomasz Napierala /* 598ae34b6ffSEdward Tomasz Napierala * Make the process sleep for a fraction of second 599ae34b6ffSEdward Tomasz Napierala * proportional to the ratio of process' resource 600ae34b6ffSEdward Tomasz Napierala * utilization compared to the limit. The point is 601ae34b6ffSEdward Tomasz Napierala * to penalize resource hogs: processes that consume 602ae34b6ffSEdward Tomasz Napierala * more of the available resources sleep for longer. 603ae34b6ffSEdward Tomasz Napierala * 604ae34b6ffSEdward Tomasz Napierala * We're trying to defer division until the very end, 605ae34b6ffSEdward Tomasz Napierala * to minimize the rounding effects. The following 606ae34b6ffSEdward Tomasz Napierala * calculation could have been written in a clearer 607ae34b6ffSEdward Tomasz Napierala * way like this: 608ae34b6ffSEdward Tomasz Napierala * 609ae34b6ffSEdward Tomasz Napierala * sleep_ms = hz * p->p_racct->r_resources[resource] / 610ae34b6ffSEdward Tomasz Napierala * rule->rr_amount; 611ae34b6ffSEdward Tomasz Napierala * sleep_ms *= rctl_throttle_pct / 100; 612ae34b6ffSEdward Tomasz Napierala * if (sleep_ms < rctl_throttle_min) 613ae34b6ffSEdward Tomasz Napierala * sleep_ms = rctl_throttle_min; 614ae34b6ffSEdward Tomasz Napierala * 615ae34b6ffSEdward Tomasz Napierala */ 616ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(hz, p->p_racct->r_resources[resource]); 617ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(sleep_ms, rctl_throttle_pct) / 100; 618ae34b6ffSEdward Tomasz Napierala if (sleep_ms < rctl_throttle_min * rule->rr_amount) 619ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_min * rule->rr_amount; 620ae34b6ffSEdward Tomasz Napierala 621ae34b6ffSEdward Tomasz Napierala /* 622ae34b6ffSEdward Tomasz Napierala * Multiply that by the ratio of the resource 623ae34b6ffSEdward Tomasz Napierala * consumption for the container compared to the limit, 624ae34b6ffSEdward Tomasz Napierala * squared. In other words, a process in a container 625ae34b6ffSEdward Tomasz Napierala * that is two times over the limit will be throttled 626ae34b6ffSEdward Tomasz Napierala * four times as much for hitting the same rule. The 627ae34b6ffSEdward Tomasz Napierala * point is to penalize processes more if the container 628ae34b6ffSEdward Tomasz Napierala * itself (eg certain UID or jail) is above the limit. 629ae34b6ffSEdward Tomasz Napierala */ 630ae34b6ffSEdward Tomasz Napierala if (available < 0) 631ae34b6ffSEdward Tomasz Napierala sleep_ratio = -available / rule->rr_amount; 632ae34b6ffSEdward Tomasz Napierala else 633ae34b6ffSEdward Tomasz Napierala sleep_ratio = 0; 634ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, sleep_ratio); 635ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, rctl_throttle_pct2) / 100; 636ae34b6ffSEdward Tomasz Napierala sleep_ms = xadd(sleep_ms, xmul(sleep_ms, sleep_ratio)); 637ae34b6ffSEdward Tomasz Napierala 638ae34b6ffSEdward Tomasz Napierala /* 639ae34b6ffSEdward Tomasz Napierala * Finally the division. 640ae34b6ffSEdward Tomasz Napierala */ 641ae34b6ffSEdward Tomasz Napierala sleep_ms /= rule->rr_amount; 642ae34b6ffSEdward Tomasz Napierala 643ae34b6ffSEdward Tomasz Napierala if (sleep_ms > rctl_throttle_max) 644ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_max; 645ae34b6ffSEdward Tomasz Napierala #if 0 64674a7305aSEdward Tomasz Napierala printf("%s: pid %d (%s), %jd of %jd, will sleep for %ju ms (ratio %ju, available %jd)\n", 647ae34b6ffSEdward Tomasz Napierala __func__, p->p_pid, p->p_comm, 648ae34b6ffSEdward Tomasz Napierala p->p_racct->r_resources[resource], 64974a7305aSEdward Tomasz Napierala rule->rr_amount, (uintmax_t)sleep_ms, 65074a7305aSEdward Tomasz Napierala (uintmax_t)sleep_ratio, (intmax_t)available); 651ae34b6ffSEdward Tomasz Napierala #endif 652ae34b6ffSEdward Tomasz Napierala 653ae34b6ffSEdward Tomasz Napierala KASSERT(sleep_ms >= rctl_throttle_min, ("%s: %ju < %d\n", 654ae34b6ffSEdward Tomasz Napierala __func__, (uintmax_t)sleep_ms, rctl_throttle_min)); 655ae34b6ffSEdward Tomasz Napierala racct_proc_throttle(p, sleep_ms); 656ae34b6ffSEdward Tomasz Napierala continue; 657ec125fbbSEdward Tomasz Napierala default: 658ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 659ec125fbbSEdward Tomasz Napierala continue; 660ec125fbbSEdward Tomasz Napierala 66172a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 66272a401d9SEdward Tomasz Napierala continue; 66372a401d9SEdward Tomasz Napierala 664ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 665ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 666ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 667ec125fbbSEdward Tomasz Napierala rule->rr_action)); 668ec125fbbSEdward Tomasz Napierala 669ec125fbbSEdward Tomasz Napierala /* 670ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 671ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 672ec125fbbSEdward Tomasz Napierala */ 6738451d0ddSKip Macy kern_psignal(p, rule->rr_action); 674ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 675ec125fbbSEdward Tomasz Napierala continue; 676ec125fbbSEdward Tomasz Napierala } 677ec125fbbSEdward Tomasz Napierala } 678ec125fbbSEdward Tomasz Napierala 679ec125fbbSEdward Tomasz Napierala if (should_deny) { 680ec125fbbSEdward Tomasz Napierala /* 681ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 682ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 683ec125fbbSEdward Tomasz Napierala */ 684ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 685ec125fbbSEdward Tomasz Napierala } 686ec125fbbSEdward Tomasz Napierala 687ec125fbbSEdward Tomasz Napierala return (0); 688ec125fbbSEdward Tomasz Napierala } 689ec125fbbSEdward Tomasz Napierala 690ec125fbbSEdward Tomasz Napierala uint64_t 691ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 692ec125fbbSEdward Tomasz Napierala { 693ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 694ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 695ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 696ec125fbbSEdward Tomasz Napierala 6974b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 698*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 699ec125fbbSEdward Tomasz Napierala 700ec125fbbSEdward Tomasz Napierala /* 701ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 702ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 703ec125fbbSEdward Tomasz Napierala */ 704ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 705ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 706ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 707ec125fbbSEdward Tomasz Napierala continue; 708ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 709ec125fbbSEdward Tomasz Napierala continue; 710ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 711ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 712ec125fbbSEdward Tomasz Napierala } 713ec125fbbSEdward Tomasz Napierala 714ec125fbbSEdward Tomasz Napierala return (amount); 715ec125fbbSEdward Tomasz Napierala } 716ec125fbbSEdward Tomasz Napierala 717ec125fbbSEdward Tomasz Napierala uint64_t 718ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 719ec125fbbSEdward Tomasz Napierala { 720ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 721ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 722ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 723ec125fbbSEdward Tomasz Napierala 724ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 725ec125fbbSEdward Tomasz Napierala 7264b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 727*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 728ec125fbbSEdward Tomasz Napierala 729ec125fbbSEdward Tomasz Napierala /* 730ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 731ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 732ec125fbbSEdward Tomasz Napierala */ 733ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 734ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 735ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 736ec125fbbSEdward Tomasz Napierala continue; 737ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 738ec125fbbSEdward Tomasz Napierala continue; 739ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 740ec125fbbSEdward Tomasz Napierala if (available < minavailable) 741ec125fbbSEdward Tomasz Napierala minavailable = available; 742ec125fbbSEdward Tomasz Napierala } 743ec125fbbSEdward Tomasz Napierala 744ec125fbbSEdward Tomasz Napierala /* 745ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 746ec125fbbSEdward Tomasz Napierala */ 747ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 748ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 749ec125fbbSEdward Tomasz Napierala minavailable += allocated; 750ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 751ec125fbbSEdward Tomasz Napierala minavailable = 0; 752*bbe4eb6dSEdward Tomasz Napierala 753ec125fbbSEdward Tomasz Napierala return (minavailable); 754ec125fbbSEdward Tomasz Napierala } 755ec125fbbSEdward Tomasz Napierala 756ec125fbbSEdward Tomasz Napierala static int 757ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 758ec125fbbSEdward Tomasz Napierala { 759ec125fbbSEdward Tomasz Napierala 7604b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7614b5c9cf6SEdward Tomasz Napierala 762ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 763ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 764ec125fbbSEdward Tomasz Napierala return (0); 765ec125fbbSEdward Tomasz Napierala 766ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 767ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 768ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 769ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 770ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 771ec125fbbSEdward Tomasz Napierala return (0); 772ec125fbbSEdward Tomasz Napierala break; 773ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 774ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 775ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 776ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 777ec125fbbSEdward Tomasz Napierala return (0); 778ec125fbbSEdward Tomasz Napierala break; 779ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 780415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 781415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 782415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 783ec125fbbSEdward Tomasz Napierala return (0); 784ec125fbbSEdward Tomasz Napierala break; 785ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 786a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 787a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 788a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 789ec125fbbSEdward Tomasz Napierala return (0); 790ec125fbbSEdward Tomasz Napierala break; 791ec125fbbSEdward Tomasz Napierala default: 792ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 793ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 794ec125fbbSEdward Tomasz Napierala } 795ec125fbbSEdward Tomasz Napierala } 796ec125fbbSEdward Tomasz Napierala 797ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 798ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 799ec125fbbSEdward Tomasz Napierala return (0); 800ec125fbbSEdward Tomasz Napierala } 801ec125fbbSEdward Tomasz Napierala 802ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 803ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 804ec125fbbSEdward Tomasz Napierala return (0); 805ec125fbbSEdward Tomasz Napierala } 806ec125fbbSEdward Tomasz Napierala 807ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 808ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 809ec125fbbSEdward Tomasz Napierala return (0); 810ec125fbbSEdward Tomasz Napierala } 811ec125fbbSEdward Tomasz Napierala 812ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 813ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 814ec125fbbSEdward Tomasz Napierala return (0); 815ec125fbbSEdward Tomasz Napierala } 816ec125fbbSEdward Tomasz Napierala 817ec125fbbSEdward Tomasz Napierala return (1); 818ec125fbbSEdward Tomasz Napierala } 819ec125fbbSEdward Tomasz Napierala 820ec125fbbSEdward Tomasz Napierala static int 821ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 822ec125fbbSEdward Tomasz Napierala { 823ec125fbbSEdward Tomasz Napierala int i; 824ec125fbbSEdward Tomasz Napierala 825ec125fbbSEdward Tomasz Napierala if (value == NULL) 826ec125fbbSEdward Tomasz Napierala return (EINVAL); 827ec125fbbSEdward Tomasz Napierala 828ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 829ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 830ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 831ec125fbbSEdward Tomasz Napierala return (0); 832ec125fbbSEdward Tomasz Napierala } 833ec125fbbSEdward Tomasz Napierala } 834ec125fbbSEdward Tomasz Napierala 835ec125fbbSEdward Tomasz Napierala return (EINVAL); 836ec125fbbSEdward Tomasz Napierala } 837ec125fbbSEdward Tomasz Napierala 838ec125fbbSEdward Tomasz Napierala static int 839ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 840ec125fbbSEdward Tomasz Napierala { 841ec125fbbSEdward Tomasz Napierala char *end; 842ec125fbbSEdward Tomasz Napierala 843ec125fbbSEdward Tomasz Napierala if (str == NULL) 844ec125fbbSEdward Tomasz Napierala return (EINVAL); 845ec125fbbSEdward Tomasz Napierala 846ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 847ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 848ec125fbbSEdward Tomasz Napierala return (EINVAL); 849ec125fbbSEdward Tomasz Napierala 850ec125fbbSEdward Tomasz Napierala return (0); 851ec125fbbSEdward Tomasz Napierala } 852ec125fbbSEdward Tomasz Napierala 853ec125fbbSEdward Tomasz Napierala static int 854ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 855ec125fbbSEdward Tomasz Napierala { 856ec125fbbSEdward Tomasz Napierala char *end; 857ec125fbbSEdward Tomasz Napierala 858ec125fbbSEdward Tomasz Napierala if (str == NULL) 859ec125fbbSEdward Tomasz Napierala return (EINVAL); 860ec125fbbSEdward Tomasz Napierala 861ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 862ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 863ec125fbbSEdward Tomasz Napierala return (EINVAL); 864ec125fbbSEdward Tomasz Napierala 865b450d447SEdward Tomasz Napierala if (*value < 0) 866b450d447SEdward Tomasz Napierala return (ERANGE); 867b450d447SEdward Tomasz Napierala 868ec125fbbSEdward Tomasz Napierala return (0); 869ec125fbbSEdward Tomasz Napierala } 870ec125fbbSEdward Tomasz Napierala 871ec125fbbSEdward Tomasz Napierala /* 872ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 873ec125fbbSEdward Tomasz Napierala */ 874ec125fbbSEdward Tomasz Napierala static void 875ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 876ec125fbbSEdward Tomasz Napierala { 877ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 878ec125fbbSEdward Tomasz Napierala 8794b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 880ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 881ec125fbbSEdward Tomasz Napierala 882ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 883ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 884ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 885ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 886ec125fbbSEdward Tomasz Napierala 887*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 888ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 889*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 890ec125fbbSEdward Tomasz Napierala } 891ec125fbbSEdward Tomasz Napierala 892ec125fbbSEdward Tomasz Napierala static int 893ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 894ec125fbbSEdward Tomasz Napierala { 895ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 896ec125fbbSEdward Tomasz Napierala 8974b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 898ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 899*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 900ec125fbbSEdward Tomasz Napierala 901ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 902ec125fbbSEdward Tomasz Napierala if (link == NULL) 903ec125fbbSEdward Tomasz Napierala return (ENOMEM); 904ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 905ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 906ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 907ec125fbbSEdward Tomasz Napierala 908ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 909*bbe4eb6dSEdward Tomasz Napierala 910ec125fbbSEdward Tomasz Napierala return (0); 911ec125fbbSEdward Tomasz Napierala } 912ec125fbbSEdward Tomasz Napierala 913ec125fbbSEdward Tomasz Napierala /* 914ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 915ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 916ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 917ec125fbbSEdward Tomasz Napierala */ 918ec125fbbSEdward Tomasz Napierala static int 919ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 920ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 921ec125fbbSEdward Tomasz Napierala { 922ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 923c1a43e73SEdward Tomasz Napierala int removed = 0; 924ec125fbbSEdward Tomasz Napierala 9254b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 926*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 927ec125fbbSEdward Tomasz Napierala 928ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 929ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 930ec125fbbSEdward Tomasz Napierala continue; 931ec125fbbSEdward Tomasz Napierala 932ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 933ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 934ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 935ec125fbbSEdward Tomasz Napierala removed++; 936ec125fbbSEdward Tomasz Napierala } 937ec125fbbSEdward Tomasz Napierala return (removed); 938ec125fbbSEdward Tomasz Napierala } 939ec125fbbSEdward Tomasz Napierala 940ec125fbbSEdward Tomasz Napierala static void 941ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 942ec125fbbSEdward Tomasz Napierala { 943ec125fbbSEdward Tomasz Napierala 9444b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9454b5c9cf6SEdward Tomasz Napierala 946ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 947ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 948ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 949a7ad07bfSEdward Tomasz Napierala break; 950ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 951a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 952a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 953ec125fbbSEdward Tomasz Napierala break; 954ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 955ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 956ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 957ec125fbbSEdward Tomasz Napierala break; 958ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 959415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 960415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 961ec125fbbSEdward Tomasz Napierala break; 962ec125fbbSEdward Tomasz Napierala default: 963ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 964ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 965ec125fbbSEdward Tomasz Napierala } 966ec125fbbSEdward Tomasz Napierala } 967ec125fbbSEdward Tomasz Napierala 968ec125fbbSEdward Tomasz Napierala static void 969ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 970ec125fbbSEdward Tomasz Napierala { 971ec125fbbSEdward Tomasz Napierala 9724b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9734b5c9cf6SEdward Tomasz Napierala 974ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 975ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 976ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 977a7ad07bfSEdward Tomasz Napierala break; 978ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 979a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 980a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 981ec125fbbSEdward Tomasz Napierala break; 982ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 983ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 984ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 985ec125fbbSEdward Tomasz Napierala break; 986ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 987415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 988415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 989ec125fbbSEdward Tomasz Napierala break; 990ec125fbbSEdward Tomasz Napierala default: 991ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 992ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 993ec125fbbSEdward Tomasz Napierala } 994ec125fbbSEdward Tomasz Napierala } 995ec125fbbSEdward Tomasz Napierala 996ec125fbbSEdward Tomasz Napierala struct rctl_rule * 997ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 998ec125fbbSEdward Tomasz Napierala { 999ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1000ec125fbbSEdward Tomasz Napierala 10014b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10024b5c9cf6SEdward Tomasz Napierala 1003ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 1004ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1005ec125fbbSEdward Tomasz Napierala return (NULL); 1006ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1007ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1008ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1009415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1010a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1011ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1012ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1013ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1014ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1015ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 1016ec125fbbSEdward Tomasz Napierala 1017ec125fbbSEdward Tomasz Napierala return (rule); 1018ec125fbbSEdward Tomasz Napierala } 1019ec125fbbSEdward Tomasz Napierala 1020ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1021ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 1022ec125fbbSEdward Tomasz Napierala { 1023ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 1024ec125fbbSEdward Tomasz Napierala 10254b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10264b5c9cf6SEdward Tomasz Napierala 1027ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 1028ec125fbbSEdward Tomasz Napierala if (copy == NULL) 1029ec125fbbSEdward Tomasz Napierala return (NULL); 1030ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 1031ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 1032ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 1033415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 1034a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 1035ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 1036ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 1037ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 1038ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 1039ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 1040ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 1041ec125fbbSEdward Tomasz Napierala 1042ec125fbbSEdward Tomasz Napierala return (copy); 1043ec125fbbSEdward Tomasz Napierala } 1044ec125fbbSEdward Tomasz Napierala 1045ec125fbbSEdward Tomasz Napierala void 1046ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 1047ec125fbbSEdward Tomasz Napierala { 1048ec125fbbSEdward Tomasz Napierala 10494b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1050ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1051ec125fbbSEdward Tomasz Napierala 1052ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 1053ec125fbbSEdward Tomasz Napierala } 1054ec125fbbSEdward Tomasz Napierala 1055ec125fbbSEdward Tomasz Napierala static void 1056ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 1057ec125fbbSEdward Tomasz Napierala { 1058ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1059ec125fbbSEdward Tomasz Napierala 1060ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 1061ec125fbbSEdward Tomasz Napierala 10624b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1063ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 1064ec125fbbSEdward Tomasz Napierala 1065ec125fbbSEdward Tomasz Napierala /* 1066ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 1067ec125fbbSEdward Tomasz Napierala */ 1068ec125fbbSEdward Tomasz Napierala 1069ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 1070ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 1071ec125fbbSEdward Tomasz Napierala } 1072ec125fbbSEdward Tomasz Napierala 1073ec125fbbSEdward Tomasz Napierala void 1074ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 1075ec125fbbSEdward Tomasz Napierala { 1076ec125fbbSEdward Tomasz Napierala 10774b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1078ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1079ec125fbbSEdward Tomasz Napierala 1080ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 1081ec125fbbSEdward Tomasz Napierala /* 1082ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 1083ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 1084ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 1085ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 1086ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 1087ec125fbbSEdward Tomasz Napierala */ 1088ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 1089ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 1090ec125fbbSEdward Tomasz Napierala } 1091ec125fbbSEdward Tomasz Napierala } 1092ec125fbbSEdward Tomasz Napierala 1093ec125fbbSEdward Tomasz Napierala static int 1094ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 1095ec125fbbSEdward Tomasz Napierala { 1096ec125fbbSEdward Tomasz Napierala 10974b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10984b5c9cf6SEdward Tomasz Napierala 1099ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1100ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1101ec125fbbSEdward Tomasz Napierala return (0); 1102ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1103ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1104ec125fbbSEdward Tomasz Napierala return (0); 1105ec125fbbSEdward Tomasz Napierala break; 1106ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1107ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1108ec125fbbSEdward Tomasz Napierala return (0); 1109ec125fbbSEdward Tomasz Napierala break; 1110ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1111415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1112ec125fbbSEdward Tomasz Napierala return (0); 1113ec125fbbSEdward Tomasz Napierala break; 1114ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1115a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1116ec125fbbSEdward Tomasz Napierala return (0); 1117ec125fbbSEdward Tomasz Napierala break; 1118ec125fbbSEdward Tomasz Napierala default: 1119ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 1120ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1121ec125fbbSEdward Tomasz Napierala } 1122ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 1123ec125fbbSEdward Tomasz Napierala return (0); 1124ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 1125ec125fbbSEdward Tomasz Napierala return (0); 1126ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 1127ec125fbbSEdward Tomasz Napierala return (0); 1128ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 1129ec125fbbSEdward Tomasz Napierala return (0); 1130ec125fbbSEdward Tomasz Napierala 1131ec125fbbSEdward Tomasz Napierala return (1); 1132ec125fbbSEdward Tomasz Napierala } 1133ec125fbbSEdward Tomasz Napierala 1134ec125fbbSEdward Tomasz Napierala static int 1135ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 1136ec125fbbSEdward Tomasz Napierala { 1137c1a43e73SEdward Tomasz Napierala struct rctl_rule *rule; 1138ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 1139ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 1140ec125fbbSEdward Tomasz Napierala id_t id; 1141c1a43e73SEdward Tomasz Napierala int error = 0; 1142ec125fbbSEdward Tomasz Napierala 11434b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11444b5c9cf6SEdward Tomasz Napierala 1145ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 1146ec125fbbSEdward Tomasz Napierala 1147ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 1148ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 1149ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 1150ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 1151ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 1152ec125fbbSEdward Tomasz Napierala perstr = rulestr; 1153ec125fbbSEdward Tomasz Napierala 1154ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 1155ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1156ec125fbbSEdward Tomasz Napierala else { 1157ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 1158ec125fbbSEdward Tomasz Napierala if (error != 0) 1159ec125fbbSEdward Tomasz Napierala goto out; 1160ec125fbbSEdward Tomasz Napierala } 1161ec125fbbSEdward Tomasz Napierala 1162ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 1163ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1164ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1165415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1166a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1167ec125fbbSEdward Tomasz Napierala } else { 1168ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1169ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1170ec125fbbSEdward Tomasz Napierala error = EINVAL; 1171ec125fbbSEdward Tomasz Napierala goto out; 1172ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1173ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1174ec125fbbSEdward Tomasz Napierala if (error != 0) 1175ec125fbbSEdward Tomasz Napierala goto out; 1176ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1177ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 1178ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 1179ec125fbbSEdward Tomasz Napierala error = ESRCH; 1180ec125fbbSEdward Tomasz Napierala goto out; 1181ec125fbbSEdward Tomasz Napierala } 1182ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 1183ec125fbbSEdward Tomasz Napierala break; 1184ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1185ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1186ec125fbbSEdward Tomasz Napierala if (error != 0) 1187ec125fbbSEdward Tomasz Napierala goto out; 1188ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 1189ec125fbbSEdward Tomasz Napierala break; 1190ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1191415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 1192ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 1193415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 1194ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 1195ec125fbbSEdward Tomasz Napierala goto out; 1196ec125fbbSEdward Tomasz Napierala } 1197ec125fbbSEdward Tomasz Napierala break; 1198ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1199a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 1200a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 1201a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 1202a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 1203ec125fbbSEdward Tomasz Napierala goto out; 1204ec125fbbSEdward Tomasz Napierala } 1205ec125fbbSEdward Tomasz Napierala break; 1206ec125fbbSEdward Tomasz Napierala default: 1207ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 1208ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1209ec125fbbSEdward Tomasz Napierala } 1210ec125fbbSEdward Tomasz Napierala } 1211ec125fbbSEdward Tomasz Napierala 1212ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1213ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1214ec125fbbSEdward Tomasz Napierala else { 1215ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1216ec125fbbSEdward Tomasz Napierala resourcenames); 1217ec125fbbSEdward Tomasz Napierala if (error != 0) 1218ec125fbbSEdward Tomasz Napierala goto out; 1219ec125fbbSEdward Tomasz Napierala } 1220ec125fbbSEdward Tomasz Napierala 1221ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1222ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1223ec125fbbSEdward Tomasz Napierala else { 1224ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1225ec125fbbSEdward Tomasz Napierala if (error != 0) 1226ec125fbbSEdward Tomasz Napierala goto out; 1227ec125fbbSEdward Tomasz Napierala } 1228ec125fbbSEdward Tomasz Napierala 1229ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1230ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1231ec125fbbSEdward Tomasz Napierala else { 1232ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1233ec125fbbSEdward Tomasz Napierala if (error != 0) 1234ec125fbbSEdward Tomasz Napierala goto out; 1235b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1236b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1237b450d447SEdward Tomasz Napierala error = ERANGE; 1238b450d447SEdward Tomasz Napierala goto out; 1239b450d447SEdward Tomasz Napierala } 1240cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1241ec125fbbSEdward Tomasz Napierala } 1242b450d447SEdward Tomasz Napierala } 1243ec125fbbSEdward Tomasz Napierala 1244ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1245ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1246ec125fbbSEdward Tomasz Napierala else { 1247ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1248ec125fbbSEdward Tomasz Napierala if (error != 0) 1249ec125fbbSEdward Tomasz Napierala goto out; 1250ec125fbbSEdward Tomasz Napierala } 1251ec125fbbSEdward Tomasz Napierala 1252ec125fbbSEdward Tomasz Napierala out: 1253ec125fbbSEdward Tomasz Napierala if (error == 0) 1254ec125fbbSEdward Tomasz Napierala *rulep = rule; 1255ec125fbbSEdward Tomasz Napierala else 1256ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1257ec125fbbSEdward Tomasz Napierala 1258ec125fbbSEdward Tomasz Napierala return (error); 1259ec125fbbSEdward Tomasz Napierala } 1260ec125fbbSEdward Tomasz Napierala 1261ec125fbbSEdward Tomasz Napierala /* 1262ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1263ec125fbbSEdward Tomasz Napierala */ 1264ec125fbbSEdward Tomasz Napierala int 1265ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1266ec125fbbSEdward Tomasz Napierala { 1267ec125fbbSEdward Tomasz Napierala struct proc *p; 1268ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1269ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1270ec125fbbSEdward Tomasz Napierala struct prison *pr; 1271a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1272ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1273ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1274ec125fbbSEdward Tomasz Napierala int match; 1275ec125fbbSEdward Tomasz Napierala 12764b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1277ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1278ec125fbbSEdward Tomasz Napierala 1279ec125fbbSEdward Tomasz Napierala /* 1280ae34b6ffSEdward Tomasz Napierala * Some rules just don't make sense, like "deny" rule for an undeniable 1281ae34b6ffSEdward Tomasz Napierala * resource. The exception are the RSS and %CPU resources - they are 1282ae34b6ffSEdward Tomasz Napierala * not deniable in the racct sense, but the limit is enforced in 1283ae34b6ffSEdward Tomasz Napierala * a different way. 1284ec125fbbSEdward Tomasz Napierala */ 1285ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1286ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DENIABLE(rule->rr_resource) && 1287ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_RSS && 1288ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_PCTCPU) { 1289ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1290ae34b6ffSEdward Tomasz Napierala } 1291ae34b6ffSEdward Tomasz Napierala 1292ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1293ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DECAYING(rule->rr_resource)) { 1294ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1295ae34b6ffSEdward Tomasz Napierala } 1296ae34b6ffSEdward Tomasz Napierala 1297ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1298ae34b6ffSEdward Tomasz Napierala rule->rr_resource == RACCT_PCTCPU) { 1299ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1300ae34b6ffSEdward Tomasz Napierala } 1301ec125fbbSEdward Tomasz Napierala 1302ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 1303ae34b6ffSEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) { 1304ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1305ae34b6ffSEdward Tomasz Napierala } 1306ec125fbbSEdward Tomasz Napierala 1307ec125fbbSEdward Tomasz Napierala /* 1308ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1309ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1310ec125fbbSEdward Tomasz Napierala */ 1311ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1312ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1313ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1314ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1315ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1316ec125fbbSEdward Tomasz Napierala } else 1317ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1318ec125fbbSEdward Tomasz Napierala 1319ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1320ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1321ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1322ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1323ec125fbbSEdward Tomasz Napierala 1324ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1325ec125fbbSEdward Tomasz Napierala /* 1326ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1327ec125fbbSEdward Tomasz Napierala * to do. 1328ec125fbbSEdward Tomasz Napierala */ 1329ec125fbbSEdward Tomasz Napierala return (0); 1330ec125fbbSEdward Tomasz Napierala 1331ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1332ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1333ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1334ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1335ec125fbbSEdward Tomasz Napierala break; 1336ec125fbbSEdward Tomasz Napierala 1337ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1338415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1339ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1340ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1341ec125fbbSEdward Tomasz Napierala break; 1342ec125fbbSEdward Tomasz Napierala 1343ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1344a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1345a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1346a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1347ec125fbbSEdward Tomasz Napierala break; 1348ec125fbbSEdward Tomasz Napierala 1349ec125fbbSEdward Tomasz Napierala default: 1350ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1351ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1352ec125fbbSEdward Tomasz Napierala } 1353ec125fbbSEdward Tomasz Napierala 1354ec125fbbSEdward Tomasz Napierala /* 1355ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1356ec125fbbSEdward Tomasz Napierala * it applies to. 1357ec125fbbSEdward Tomasz Napierala */ 1358ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1359ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1360ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1361ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1362ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1363ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1364ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1365ec125fbbSEdward Tomasz Napierala break; 1366ec125fbbSEdward Tomasz Napierala continue; 1367ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1368415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1369ec125fbbSEdward Tomasz Napierala break; 1370ec125fbbSEdward Tomasz Napierala continue; 1371ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1372ec125fbbSEdward Tomasz Napierala match = 0; 1373ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1374a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1375ec125fbbSEdward Tomasz Napierala match = 1; 1376ec125fbbSEdward Tomasz Napierala break; 1377ec125fbbSEdward Tomasz Napierala } 1378ec125fbbSEdward Tomasz Napierala } 1379ec125fbbSEdward Tomasz Napierala if (match) 1380ec125fbbSEdward Tomasz Napierala break; 1381ec125fbbSEdward Tomasz Napierala continue; 1382ec125fbbSEdward Tomasz Napierala default: 1383ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1384ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1385ec125fbbSEdward Tomasz Napierala } 1386ec125fbbSEdward Tomasz Napierala 1387ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1388ec125fbbSEdward Tomasz Napierala } 1389ec125fbbSEdward Tomasz Napierala 1390ec125fbbSEdward Tomasz Napierala return (0); 1391ec125fbbSEdward Tomasz Napierala } 1392ec125fbbSEdward Tomasz Napierala 1393ec125fbbSEdward Tomasz Napierala static void 139415db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 139515db3c07SEdward Tomasz Napierala { 139615db3c07SEdward Tomasz Napierala 1397*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 139815db3c07SEdward Tomasz Napierala } 139915db3c07SEdward Tomasz Napierala 140015db3c07SEdward Tomasz Napierala static void 140115db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 140215db3c07SEdward Tomasz Napierala { 140315db3c07SEdward Tomasz Napierala 1404*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 140515db3c07SEdward Tomasz Napierala } 140615db3c07SEdward Tomasz Napierala 140715db3c07SEdward Tomasz Napierala static void 1408ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1409ec125fbbSEdward Tomasz Napierala { 1410ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1411ec125fbbSEdward Tomasz Napierala int found = 0; 1412ec125fbbSEdward Tomasz Napierala 14134b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1414*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 14154b5c9cf6SEdward Tomasz Napierala 1416ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1417ec125fbbSEdward Tomasz Napierala 1418ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1419ec125fbbSEdward Tomasz Napierala } 1420ec125fbbSEdward Tomasz Napierala 1421ec125fbbSEdward Tomasz Napierala /* 1422ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1423ec125fbbSEdward Tomasz Napierala */ 1424ec125fbbSEdward Tomasz Napierala int 1425ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1426ec125fbbSEdward Tomasz Napierala { 1427ec125fbbSEdward Tomasz Napierala struct proc *p; 1428c1a43e73SEdward Tomasz Napierala int found = 0; 1429ec125fbbSEdward Tomasz Napierala 14304b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14314b5c9cf6SEdward Tomasz Napierala 1432ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1433ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1434ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1435*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1436ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1437*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1438ec125fbbSEdward Tomasz Napierala if (found) 1439ec125fbbSEdward Tomasz Napierala return (0); 1440ec125fbbSEdward Tomasz Napierala return (ESRCH); 1441ec125fbbSEdward Tomasz Napierala } 1442ec125fbbSEdward Tomasz Napierala 144315db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, 144415db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 144515db3c07SEdward Tomasz Napierala filter, (void *)&found); 144615db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, 144715db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 144815db3c07SEdward Tomasz Napierala filter, (void *)&found); 144915db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 145015db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 145115db3c07SEdward Tomasz Napierala filter, (void *)&found); 1452ec125fbbSEdward Tomasz Napierala 1453ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1454*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1455ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1456ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1457ec125fbbSEdward Tomasz Napierala } 1458*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1459ec125fbbSEdward Tomasz Napierala 1460ec125fbbSEdward Tomasz Napierala if (found) 1461ec125fbbSEdward Tomasz Napierala return (0); 1462ec125fbbSEdward Tomasz Napierala return (ESRCH); 1463ec125fbbSEdward Tomasz Napierala } 1464ec125fbbSEdward Tomasz Napierala 1465ec125fbbSEdward Tomasz Napierala /* 1466ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1467ec125fbbSEdward Tomasz Napierala */ 1468ec125fbbSEdward Tomasz Napierala static void 1469ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1470ec125fbbSEdward Tomasz Napierala { 1471ec125fbbSEdward Tomasz Napierala int64_t amount; 1472ec125fbbSEdward Tomasz Napierala 14734b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14744b5c9cf6SEdward Tomasz Napierala 1475ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1476ec125fbbSEdward Tomasz Napierala 1477ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1478ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1479ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1480ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1481ec125fbbSEdward Tomasz Napierala else 1482ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1483ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1484ec125fbbSEdward Tomasz Napierala break; 1485ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1486ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1487ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1488ec125fbbSEdward Tomasz Napierala else 1489ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1490ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1491ec125fbbSEdward Tomasz Napierala break; 1492ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1493415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1494ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1495ec125fbbSEdward Tomasz Napierala else 1496ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1497415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1498ec125fbbSEdward Tomasz Napierala break; 1499ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1500a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1501ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1502ec125fbbSEdward Tomasz Napierala else 1503ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1504a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1505ec125fbbSEdward Tomasz Napierala break; 1506ec125fbbSEdward Tomasz Napierala default: 1507ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1508ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1509ec125fbbSEdward Tomasz Napierala } 1510ec125fbbSEdward Tomasz Napierala 1511ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1512ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 151385a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 151485a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1515ec125fbbSEdward Tomasz Napierala 1516ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1517ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1518ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1519ec125fbbSEdward Tomasz Napierala amount); 1520ec125fbbSEdward Tomasz Napierala 1521ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1522ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1523ec125fbbSEdward Tomasz Napierala } 1524ec125fbbSEdward Tomasz Napierala 1525ec125fbbSEdward Tomasz Napierala /* 1526ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1527ec125fbbSEdward Tomasz Napierala */ 1528ec125fbbSEdward Tomasz Napierala static int 1529ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1530ec125fbbSEdward Tomasz Napierala { 1531ec125fbbSEdward Tomasz Napierala char *str; 1532c1a43e73SEdward Tomasz Napierala int error; 1533ec125fbbSEdward Tomasz Napierala 15344b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15354b5c9cf6SEdward Tomasz Napierala 1536ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1537ec125fbbSEdward Tomasz Napierala return (EINVAL); 1538ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1539786813aaSEdward Tomasz Napierala return (E2BIG); 1540ec125fbbSEdward Tomasz Napierala 1541ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1542ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1543ec125fbbSEdward Tomasz Napierala if (error != 0) { 1544ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1545ec125fbbSEdward Tomasz Napierala return (error); 1546ec125fbbSEdward Tomasz Napierala } 1547ec125fbbSEdward Tomasz Napierala 1548ec125fbbSEdward Tomasz Napierala *inputstr = str; 1549ec125fbbSEdward Tomasz Napierala 1550ec125fbbSEdward Tomasz Napierala return (0); 1551ec125fbbSEdward Tomasz Napierala } 1552ec125fbbSEdward Tomasz Napierala 1553ec125fbbSEdward Tomasz Napierala /* 1554ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1555ec125fbbSEdward Tomasz Napierala */ 1556ec125fbbSEdward Tomasz Napierala static int 1557ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1558ec125fbbSEdward Tomasz Napierala { 1559ec125fbbSEdward Tomasz Napierala int error; 1560ec125fbbSEdward Tomasz Napierala 15614b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15624b5c9cf6SEdward Tomasz Napierala 1563ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1564ec125fbbSEdward Tomasz Napierala return (0); 1565ec125fbbSEdward Tomasz Napierala 1566ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1567ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1568ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1569ec125fbbSEdward Tomasz Napierala return (ERANGE); 1570ec125fbbSEdward Tomasz Napierala } 1571ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1572ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1573ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1574ec125fbbSEdward Tomasz Napierala return (error); 1575ec125fbbSEdward Tomasz Napierala } 1576ec125fbbSEdward Tomasz Napierala 1577ec125fbbSEdward Tomasz Napierala static struct sbuf * 1578ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1579ec125fbbSEdward Tomasz Napierala { 1580ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1581c1a43e73SEdward Tomasz Napierala int64_t amount; 1582c1a43e73SEdward Tomasz Napierala int i; 1583ec125fbbSEdward Tomasz Napierala 15844b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15854b5c9cf6SEdward Tomasz Napierala 1586ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1587ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 15884fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1589ec125fbbSEdward Tomasz Napierala continue; 1590*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1591ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 1592*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 159385a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1594cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1595ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1596ec125fbbSEdward Tomasz Napierala } 1597ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1598ec125fbbSEdward Tomasz Napierala return (sb); 1599ec125fbbSEdward Tomasz Napierala } 1600ec125fbbSEdward Tomasz Napierala 1601ec125fbbSEdward Tomasz Napierala int 16028451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1603ec125fbbSEdward Tomasz Napierala { 1604ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1605ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1606ec125fbbSEdward Tomasz Napierala struct proc *p; 1607ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1608ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1609a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1610c1a43e73SEdward Tomasz Napierala char *inputstr; 1611c1a43e73SEdward Tomasz Napierala int error; 1612ec125fbbSEdward Tomasz Napierala 16134b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16144b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16154b5c9cf6SEdward Tomasz Napierala 1616415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1617ec125fbbSEdward Tomasz Napierala if (error != 0) 1618ec125fbbSEdward Tomasz Napierala return (error); 1619ec125fbbSEdward Tomasz Napierala 1620ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1621ec125fbbSEdward Tomasz Napierala if (error != 0) 1622ec125fbbSEdward Tomasz Napierala return (error); 1623ec125fbbSEdward Tomasz Napierala 1624ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1625ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1626ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1627ec125fbbSEdward Tomasz Napierala if (error != 0) { 1628ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1629ec125fbbSEdward Tomasz Napierala return (error); 1630ec125fbbSEdward Tomasz Napierala } 1631ec125fbbSEdward Tomasz Napierala 1632ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1633ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1634ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1635ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1636ec125fbbSEdward Tomasz Napierala error = EINVAL; 1637ec125fbbSEdward Tomasz Napierala goto out; 1638ec125fbbSEdward Tomasz Napierala } 1639ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1640ec125fbbSEdward Tomasz Napierala break; 1641ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1642ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1643ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1644ec125fbbSEdward Tomasz Napierala error = EINVAL; 1645ec125fbbSEdward Tomasz Napierala goto out; 1646ec125fbbSEdward Tomasz Napierala } 1647ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1648ec125fbbSEdward Tomasz Napierala break; 1649ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1650415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1651ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1652ec125fbbSEdward Tomasz Napierala error = EINVAL; 1653ec125fbbSEdward Tomasz Napierala goto out; 1654ec125fbbSEdward Tomasz Napierala } 1655ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1656ec125fbbSEdward Tomasz Napierala break; 1657ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1658a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1659a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1660ec125fbbSEdward Tomasz Napierala error = EINVAL; 1661ec125fbbSEdward Tomasz Napierala goto out; 1662ec125fbbSEdward Tomasz Napierala } 1663a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1664ec125fbbSEdward Tomasz Napierala break; 1665ec125fbbSEdward Tomasz Napierala default: 1666ec125fbbSEdward Tomasz Napierala error = EINVAL; 1667ec125fbbSEdward Tomasz Napierala } 1668ec125fbbSEdward Tomasz Napierala out: 1669ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1670ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1671ec125fbbSEdward Tomasz Napierala if (error != 0) 1672ec125fbbSEdward Tomasz Napierala return (error); 1673ec125fbbSEdward Tomasz Napierala 1674ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1675ec125fbbSEdward Tomasz Napierala 1676ec125fbbSEdward Tomasz Napierala return (error); 1677ec125fbbSEdward Tomasz Napierala } 1678ec125fbbSEdward Tomasz Napierala 1679ec125fbbSEdward Tomasz Napierala static void 1680ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1681ec125fbbSEdward Tomasz Napierala { 1682ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1683ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1684ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1685ec125fbbSEdward Tomasz Napierala 16864b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1687*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 16884b5c9cf6SEdward Tomasz Napierala 1689ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1690ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1691ec125fbbSEdward Tomasz Napierala continue; 1692ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1693ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1694ec125fbbSEdward Tomasz Napierala } 1695ec125fbbSEdward Tomasz Napierala } 1696ec125fbbSEdward Tomasz Napierala 1697ec125fbbSEdward Tomasz Napierala int 16988451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1699ec125fbbSEdward Tomasz Napierala { 1700ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1701ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1702ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1703ec125fbbSEdward Tomasz Napierala struct proc *p; 1704c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1705c1a43e73SEdward Tomasz Napierala size_t bufsize; 1706c1a43e73SEdward Tomasz Napierala int error; 1707ec125fbbSEdward Tomasz Napierala 17084b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17094b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17104b5c9cf6SEdward Tomasz Napierala 1711ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1712ec125fbbSEdward Tomasz Napierala if (error != 0) 1713ec125fbbSEdward Tomasz Napierala return (error); 1714ec125fbbSEdward Tomasz Napierala 1715ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1716ec125fbbSEdward Tomasz Napierala if (error != 0) 1717ec125fbbSEdward Tomasz Napierala return (error); 1718ec125fbbSEdward Tomasz Napierala 1719ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1720ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1721ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1722ec125fbbSEdward Tomasz Napierala if (error != 0) { 1723ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1724ec125fbbSEdward Tomasz Napierala return (error); 1725ec125fbbSEdward Tomasz Napierala } 1726ec125fbbSEdward Tomasz Napierala 17272b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 17282b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 17292b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 17302b4035eeSEdward Tomasz Napierala return (E2BIG); 17312b4035eeSEdward Tomasz Napierala } 17322b4035eeSEdward Tomasz Napierala 1733ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1734ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1735ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1736ec125fbbSEdward Tomasz Napierala 1737ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1738*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1739ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1740ec125fbbSEdward Tomasz Napierala /* 1741ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1742ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1743ec125fbbSEdward Tomasz Napierala */ 1744ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1745ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1746ec125fbbSEdward Tomasz Napierala continue; 1747ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1748ec125fbbSEdward Tomasz Napierala continue; 1749ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1750ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1751ec125fbbSEdward Tomasz Napierala } 1752*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1753ec125fbbSEdward Tomasz Napierala } 1754ec125fbbSEdward Tomasz Napierala 175515db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, 175615db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 175715db3c07SEdward Tomasz Napierala filter, sb); 175815db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, 175915db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 176015db3c07SEdward Tomasz Napierala filter, sb); 176115db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 176215db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 176315db3c07SEdward Tomasz Napierala filter, sb); 1764ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 17652b4035eeSEdward Tomasz Napierala error = ERANGE; 17662b4035eeSEdward Tomasz Napierala goto out; 1767ec125fbbSEdward Tomasz Napierala } 1768ec125fbbSEdward Tomasz Napierala 1769ec125fbbSEdward Tomasz Napierala /* 1770ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1771ec125fbbSEdward Tomasz Napierala */ 1772ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1773ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1774ec125fbbSEdward Tomasz Napierala 1775ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 17762b4035eeSEdward Tomasz Napierala out: 1777ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1778ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1779ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1780ec125fbbSEdward Tomasz Napierala return (error); 1781ec125fbbSEdward Tomasz Napierala } 1782ec125fbbSEdward Tomasz Napierala 1783ec125fbbSEdward Tomasz Napierala int 17848451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1785ec125fbbSEdward Tomasz Napierala { 1786ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1787ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1788ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1789c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1790c1a43e73SEdward Tomasz Napierala size_t bufsize; 1791c1a43e73SEdward Tomasz Napierala int error; 1792ec125fbbSEdward Tomasz Napierala 17934b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17944b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17954b5c9cf6SEdward Tomasz Napierala 1796ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1797ec125fbbSEdward Tomasz Napierala if (error != 0) 1798ec125fbbSEdward Tomasz Napierala return (error); 1799ec125fbbSEdward Tomasz Napierala 1800ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1801ec125fbbSEdward Tomasz Napierala if (error != 0) 1802ec125fbbSEdward Tomasz Napierala return (error); 1803ec125fbbSEdward Tomasz Napierala 1804ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1805ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1806ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1807ec125fbbSEdward Tomasz Napierala if (error != 0) { 1808ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1809ec125fbbSEdward Tomasz Napierala return (error); 1810ec125fbbSEdward Tomasz Napierala } 1811ec125fbbSEdward Tomasz Napierala 1812ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1813ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1814ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1815ec125fbbSEdward Tomasz Napierala return (EINVAL); 1816ec125fbbSEdward Tomasz Napierala } 1817ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1818ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1819ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1820ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1821ec125fbbSEdward Tomasz Napierala } 1822ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1823ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1824ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1825ec125fbbSEdward Tomasz Napierala return (EINVAL); 1826ec125fbbSEdward Tomasz Napierala } 1827ec125fbbSEdward Tomasz Napierala 18282b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 18292b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 18302b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 18312b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 18322b4035eeSEdward Tomasz Napierala return (E2BIG); 18332b4035eeSEdward Tomasz Napierala } 18342b4035eeSEdward Tomasz Napierala 1835ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1836ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1837ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1838ec125fbbSEdward Tomasz Napierala 1839*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1840ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1841ec125fbbSEdward Tomasz Napierala rrl_next) { 1842ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1843ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1844ec125fbbSEdward Tomasz Napierala } 1845*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1846ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 18472b4035eeSEdward Tomasz Napierala error = ERANGE; 1848b483e111SConrad Meyer sbuf_delete(sb); 18492b4035eeSEdward Tomasz Napierala goto out; 1850ec125fbbSEdward Tomasz Napierala } 1851ec125fbbSEdward Tomasz Napierala 1852ec125fbbSEdward Tomasz Napierala /* 1853ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1854ec125fbbSEdward Tomasz Napierala */ 1855ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1856ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1857ec125fbbSEdward Tomasz Napierala 1858ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 18592b4035eeSEdward Tomasz Napierala out: 1860ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1861ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1862ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1863ec125fbbSEdward Tomasz Napierala return (error); 1864ec125fbbSEdward Tomasz Napierala } 1865ec125fbbSEdward Tomasz Napierala 1866ec125fbbSEdward Tomasz Napierala int 18678451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1868ec125fbbSEdward Tomasz Napierala { 1869ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1870ec125fbbSEdward Tomasz Napierala char *inputstr; 1871c1a43e73SEdward Tomasz Napierala int error; 1872ec125fbbSEdward Tomasz Napierala 18734b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18744b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18754b5c9cf6SEdward Tomasz Napierala 1876ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1877ec125fbbSEdward Tomasz Napierala if (error != 0) 1878ec125fbbSEdward Tomasz Napierala return (error); 1879ec125fbbSEdward Tomasz Napierala 1880ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1881ec125fbbSEdward Tomasz Napierala if (error != 0) 1882ec125fbbSEdward Tomasz Napierala return (error); 1883ec125fbbSEdward Tomasz Napierala 1884ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1885ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1886ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1887ec125fbbSEdward Tomasz Napierala if (error != 0) { 1888ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1889ec125fbbSEdward Tomasz Napierala return (error); 1890ec125fbbSEdward Tomasz Napierala } 1891ec125fbbSEdward Tomasz Napierala /* 1892ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1893ec125fbbSEdward Tomasz Napierala */ 1894ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1895ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1896ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1897ec125fbbSEdward Tomasz Napierala 1898ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1899ec125fbbSEdward Tomasz Napierala error = EINVAL; 1900ec125fbbSEdward Tomasz Napierala goto out; 1901ec125fbbSEdward Tomasz Napierala } 1902ec125fbbSEdward Tomasz Napierala 1903ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1904ec125fbbSEdward Tomasz Napierala 1905ec125fbbSEdward Tomasz Napierala out: 1906ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1907ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1908ec125fbbSEdward Tomasz Napierala return (error); 1909ec125fbbSEdward Tomasz Napierala } 1910ec125fbbSEdward Tomasz Napierala 1911ec125fbbSEdward Tomasz Napierala int 19128451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1913ec125fbbSEdward Tomasz Napierala { 1914ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1915ec125fbbSEdward Tomasz Napierala char *inputstr; 1916c1a43e73SEdward Tomasz Napierala int error; 1917ec125fbbSEdward Tomasz Napierala 19184b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19194b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 19204b5c9cf6SEdward Tomasz Napierala 1921ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1922ec125fbbSEdward Tomasz Napierala if (error != 0) 1923ec125fbbSEdward Tomasz Napierala return (error); 1924ec125fbbSEdward Tomasz Napierala 1925ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1926ec125fbbSEdward Tomasz Napierala if (error != 0) 1927ec125fbbSEdward Tomasz Napierala return (error); 1928ec125fbbSEdward Tomasz Napierala 1929ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1930ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1931ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1932ec125fbbSEdward Tomasz Napierala if (error != 0) { 1933ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1934ec125fbbSEdward Tomasz Napierala return (error); 1935ec125fbbSEdward Tomasz Napierala } 1936ec125fbbSEdward Tomasz Napierala 1937ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1938ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1939ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1940ec125fbbSEdward Tomasz Napierala 1941ec125fbbSEdward Tomasz Napierala return (error); 1942ec125fbbSEdward Tomasz Napierala } 1943ec125fbbSEdward Tomasz Napierala 1944ec125fbbSEdward Tomasz Napierala /* 1945ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1946ec125fbbSEdward Tomasz Napierala */ 1947ec125fbbSEdward Tomasz Napierala void 1948ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1949ec125fbbSEdward Tomasz Napierala { 1950c1a43e73SEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1951ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1952ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1953ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1954a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1955c1a43e73SEdward Tomasz Napierala int rulecnt, i; 1956ec125fbbSEdward Tomasz Napierala 19574b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 19584b5c9cf6SEdward Tomasz Napierala 1959ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1960ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1961a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1962ec125fbbSEdward Tomasz Napierala 1963ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1964ec125fbbSEdward Tomasz Napierala 1965ec125fbbSEdward Tomasz Napierala again: 1966ec125fbbSEdward Tomasz Napierala /* 1967ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1968ec125fbbSEdward Tomasz Napierala * credentials. 1969ec125fbbSEdward Tomasz Napierala */ 1970ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1971*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1972ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1973ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1974ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1975ec125fbbSEdward Tomasz Napierala rulecnt++; 1976ec125fbbSEdward Tomasz Napierala } 1977ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1978ec125fbbSEdward Tomasz Napierala rulecnt++; 1979ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1980ec125fbbSEdward Tomasz Napierala rulecnt++; 1981a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1982ec125fbbSEdward Tomasz Napierala rulecnt++; 1983*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1984ec125fbbSEdward Tomasz Napierala 1985ec125fbbSEdward Tomasz Napierala /* 1986ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 1987ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 1988ec125fbbSEdward Tomasz Napierala */ 1989ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 1990ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 1991ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 1992ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 1993ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 1994ec125fbbSEdward Tomasz Napierala } 1995ec125fbbSEdward Tomasz Napierala 1996ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1997ec125fbbSEdward Tomasz Napierala 1998ec125fbbSEdward Tomasz Napierala /* 1999ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 2000ec125fbbSEdward Tomasz Napierala */ 2001*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2002ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 2003ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2004ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2005ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2006ec125fbbSEdward Tomasz Napierala goto goaround; 2007ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2008ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2009ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2010ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2011ec125fbbSEdward Tomasz Napierala rulecnt--; 2012ec125fbbSEdward Tomasz Napierala } 2013ec125fbbSEdward Tomasz Napierala } 2014ec125fbbSEdward Tomasz Napierala 2015ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 2016ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2017ec125fbbSEdward Tomasz Napierala goto goaround; 2018ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2019ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2020ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2021ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2022ec125fbbSEdward Tomasz Napierala rulecnt--; 2023ec125fbbSEdward Tomasz Napierala } 2024ec125fbbSEdward Tomasz Napierala 2025ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 2026ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2027ec125fbbSEdward Tomasz Napierala goto goaround; 2028ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2029ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2030ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2031ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2032ec125fbbSEdward Tomasz Napierala rulecnt--; 2033ec125fbbSEdward Tomasz Napierala } 2034ec125fbbSEdward Tomasz Napierala 2035a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 2036ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2037ec125fbbSEdward Tomasz Napierala goto goaround; 2038ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2039ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2040ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2041ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2042ec125fbbSEdward Tomasz Napierala rulecnt--; 2043ec125fbbSEdward Tomasz Napierala } 2044ec125fbbSEdward Tomasz Napierala 2045ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 2046ec125fbbSEdward Tomasz Napierala /* 2047ec125fbbSEdward Tomasz Napierala * Free the old rule list. 2048ec125fbbSEdward Tomasz Napierala */ 2049ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 2050ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 2051ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2052ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2053ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2054ec125fbbSEdward Tomasz Napierala } 2055ec125fbbSEdward Tomasz Napierala 2056ec125fbbSEdward Tomasz Napierala /* 2057ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 2058ec125fbbSEdward Tomasz Napierala * 2059ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 2060ec125fbbSEdward Tomasz Napierala * of iterating here? 2061ec125fbbSEdward Tomasz Napierala */ 2062ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2063ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2064ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2065ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 2066ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 2067ec125fbbSEdward Tomasz Napierala } 2068ec125fbbSEdward Tomasz Napierala 2069*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2070ec125fbbSEdward Tomasz Napierala 2071ec125fbbSEdward Tomasz Napierala return; 2072ec125fbbSEdward Tomasz Napierala } 2073ec125fbbSEdward Tomasz Napierala 2074ec125fbbSEdward Tomasz Napierala goaround: 2075*bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2076ec125fbbSEdward Tomasz Napierala 2077ec125fbbSEdward Tomasz Napierala /* 2078ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 2079ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 2080ec125fbbSEdward Tomasz Napierala */ 2081ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2082ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2083ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2084ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 2085ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 2086ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 2087ec125fbbSEdward Tomasz Napierala } 2088ec125fbbSEdward Tomasz Napierala 2089ec125fbbSEdward Tomasz Napierala goto again; 2090ec125fbbSEdward Tomasz Napierala } 2091ec125fbbSEdward Tomasz Napierala 2092ec125fbbSEdward Tomasz Napierala /* 2093ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 2094ec125fbbSEdward Tomasz Napierala */ 2095ec125fbbSEdward Tomasz Napierala int 2096ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 2097ec125fbbSEdward Tomasz Napierala { 2098ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 2099c1a43e73SEdward Tomasz Napierala struct rctl_rule_link *link; 2100c1a43e73SEdward Tomasz Napierala int error; 2101ec125fbbSEdward Tomasz Napierala 21024b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2103*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21040b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 2105ec125fbbSEdward Tomasz Napierala 2106*bbe4eb6dSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 2107ec125fbbSEdward Tomasz Napierala 2108ec125fbbSEdward Tomasz Napierala /* 2109ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 2110ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 2111ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 2112ec125fbbSEdward Tomasz Napierala */ 2113ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 2114ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2115ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2116ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 2117ec125fbbSEdward Tomasz Napierala if (rule == NULL) 2118ec125fbbSEdward Tomasz Napierala goto fail; 2119ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 2120ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 2121ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 2122ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2123ec125fbbSEdward Tomasz Napierala rule); 2124ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 2125ec125fbbSEdward Tomasz Napierala if (error != 0) 2126ec125fbbSEdward Tomasz Napierala goto fail; 2127ec125fbbSEdward Tomasz Napierala } else { 2128ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2129ec125fbbSEdward Tomasz Napierala link->rrl_rule); 2130ec125fbbSEdward Tomasz Napierala if (error != 0) 2131ec125fbbSEdward Tomasz Napierala goto fail; 2132ec125fbbSEdward Tomasz Napierala } 2133ec125fbbSEdward Tomasz Napierala } 2134ec125fbbSEdward Tomasz Napierala 2135ec125fbbSEdward Tomasz Napierala return (0); 2136ec125fbbSEdward Tomasz Napierala 2137ec125fbbSEdward Tomasz Napierala fail: 2138ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 2139ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 2140ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2141ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2142ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2143ec125fbbSEdward Tomasz Napierala } 2144*bbe4eb6dSEdward Tomasz Napierala 2145ec125fbbSEdward Tomasz Napierala return (EAGAIN); 2146ec125fbbSEdward Tomasz Napierala } 2147ec125fbbSEdward Tomasz Napierala 2148ec125fbbSEdward Tomasz Napierala /* 2149ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 2150ec125fbbSEdward Tomasz Napierala */ 2151ec125fbbSEdward Tomasz Napierala void 2152ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 2153ec125fbbSEdward Tomasz Napierala { 2154ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 2155ec125fbbSEdward Tomasz Napierala 21564b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2157*bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21584b5c9cf6SEdward Tomasz Napierala 2159ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 2160ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 2161ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2162ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2163ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2164ec125fbbSEdward Tomasz Napierala } 2165ec125fbbSEdward Tomasz Napierala } 2166ec125fbbSEdward Tomasz Napierala 2167ec125fbbSEdward Tomasz Napierala static void 2168ec125fbbSEdward Tomasz Napierala rctl_init(void) 2169ec125fbbSEdward Tomasz Napierala { 2170ec125fbbSEdward Tomasz Napierala 21714b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 21724b5c9cf6SEdward Tomasz Napierala return; 21734b5c9cf6SEdward Tomasz Napierala 2174c1a43e73SEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 217523e6fff2SEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 2176ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 2177ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 217823e6fff2SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2179ae34b6ffSEdward Tomasz Napierala 21808bd8c8f1SEdward Tomasz Napierala /* 21818bd8c8f1SEdward Tomasz Napierala * Set default values, making sure not to overwrite the ones 21828bd8c8f1SEdward Tomasz Napierala * fetched from tunables. Most of those could be set at the 21838bd8c8f1SEdward Tomasz Napierala * declaration, except for the rctl_throttle_max - we cannot 21848bd8c8f1SEdward Tomasz Napierala * set it there due to hz not being compile time constant. 21858bd8c8f1SEdward Tomasz Napierala */ 21868bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_min < 1) 2187ae34b6ffSEdward Tomasz Napierala rctl_throttle_min = 1; 21888bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_max < rctl_throttle_min) 2189ae34b6ffSEdward Tomasz Napierala rctl_throttle_max = 2 * hz; 21908bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct < 0) 2191ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct = 100; 21928bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct2 < 0) 2193ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct2 = 100; 2194ec125fbbSEdward Tomasz Napierala } 2195ec125fbbSEdward Tomasz Napierala 2196ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 2197ec125fbbSEdward Tomasz Napierala 2198ec125fbbSEdward Tomasz Napierala int 21998451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 2200ec125fbbSEdward Tomasz Napierala { 2201ec125fbbSEdward Tomasz Napierala 2202ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2203ec125fbbSEdward Tomasz Napierala } 2204ec125fbbSEdward Tomasz Napierala 2205ec125fbbSEdward Tomasz Napierala int 22068451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 2207ec125fbbSEdward Tomasz Napierala { 2208ec125fbbSEdward Tomasz Napierala 2209ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2210ec125fbbSEdward Tomasz Napierala } 2211ec125fbbSEdward Tomasz Napierala 2212ec125fbbSEdward Tomasz Napierala int 22138451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 2214ec125fbbSEdward Tomasz Napierala { 2215ec125fbbSEdward Tomasz Napierala 2216ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2217ec125fbbSEdward Tomasz Napierala } 2218ec125fbbSEdward Tomasz Napierala 2219ec125fbbSEdward Tomasz Napierala int 22208451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 2221ec125fbbSEdward Tomasz Napierala { 2222ec125fbbSEdward Tomasz Napierala 2223ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2224ec125fbbSEdward Tomasz Napierala } 2225ec125fbbSEdward Tomasz Napierala 2226ec125fbbSEdward Tomasz Napierala int 22278451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 2228ec125fbbSEdward Tomasz Napierala { 2229ec125fbbSEdward Tomasz Napierala 2230ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2231ec125fbbSEdward Tomasz Napierala } 2232ec125fbbSEdward Tomasz Napierala 2233ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 2234