1ec125fbbSEdward Tomasz Napierala /*- 28a36da99SPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 38a36da99SPedro F. Giffuni * 4ec125fbbSEdward Tomasz Napierala * Copyright (c) 2010 The FreeBSD Foundation 5ec125fbbSEdward Tomasz Napierala * 6ec125fbbSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 7ec125fbbSEdward Tomasz Napierala * from the FreeBSD Foundation. 8ec125fbbSEdward Tomasz Napierala * 9ec125fbbSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 10ec125fbbSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 11ec125fbbSEdward Tomasz Napierala * are met: 12ec125fbbSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 13ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 14ec125fbbSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 15ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 16ec125fbbSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 17ec125fbbSEdward Tomasz Napierala * 18ec125fbbSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19ec125fbbSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20ec125fbbSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21ec125fbbSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22ec125fbbSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23ec125fbbSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24ec125fbbSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25ec125fbbSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26ec125fbbSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27ec125fbbSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28ec125fbbSEdward Tomasz Napierala * SUCH DAMAGE. 29ec125fbbSEdward Tomasz Napierala * 30ec125fbbSEdward Tomasz Napierala * $FreeBSD$ 31ec125fbbSEdward Tomasz Napierala */ 32ec125fbbSEdward Tomasz Napierala 33ec125fbbSEdward Tomasz Napierala #include <sys/cdefs.h> 34ec125fbbSEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 35ec125fbbSEdward Tomasz Napierala 36ec125fbbSEdward Tomasz Napierala #include <sys/param.h> 37773e541eSWarner Losh #include <sys/devctl.h> 38ec125fbbSEdward Tomasz Napierala #include <sys/malloc.h> 39ec125fbbSEdward Tomasz Napierala #include <sys/queue.h> 40ec125fbbSEdward Tomasz Napierala #include <sys/refcount.h> 41ec125fbbSEdward Tomasz Napierala #include <sys/jail.h> 42ec125fbbSEdward Tomasz Napierala #include <sys/kernel.h> 43ec125fbbSEdward Tomasz Napierala #include <sys/limits.h> 44ec125fbbSEdward Tomasz Napierala #include <sys/loginclass.h> 45ec125fbbSEdward Tomasz Napierala #include <sys/priv.h> 46ec125fbbSEdward Tomasz Napierala #include <sys/proc.h> 47ec125fbbSEdward Tomasz Napierala #include <sys/racct.h> 48ec125fbbSEdward Tomasz Napierala #include <sys/rctl.h> 49ec125fbbSEdward Tomasz Napierala #include <sys/resourcevar.h> 50ec125fbbSEdward Tomasz Napierala #include <sys/sx.h> 51ec125fbbSEdward Tomasz Napierala #include <sys/sysent.h> 52ec125fbbSEdward Tomasz Napierala #include <sys/sysproto.h> 53ec125fbbSEdward Tomasz Napierala #include <sys/systm.h> 54ec125fbbSEdward Tomasz Napierala #include <sys/types.h> 55ec125fbbSEdward Tomasz Napierala #include <sys/eventhandler.h> 56ec125fbbSEdward Tomasz Napierala #include <sys/lock.h> 57ec125fbbSEdward Tomasz Napierala #include <sys/mutex.h> 58ec125fbbSEdward Tomasz Napierala #include <sys/rwlock.h> 59ec125fbbSEdward Tomasz Napierala #include <sys/sbuf.h> 60ec125fbbSEdward Tomasz Napierala #include <sys/taskqueue.h> 61ec125fbbSEdward Tomasz Napierala #include <sys/tree.h> 62ec125fbbSEdward Tomasz Napierala #include <vm/uma.h> 63ec125fbbSEdward Tomasz Napierala 64ec125fbbSEdward Tomasz Napierala #ifdef RCTL 65ec125fbbSEdward Tomasz Napierala #ifndef RACCT 66ec125fbbSEdward Tomasz Napierala #error "The RCTL option requires the RACCT option" 67ec125fbbSEdward Tomasz Napierala #endif 68ec125fbbSEdward Tomasz Napierala 69ec125fbbSEdward Tomasz Napierala FEATURE(rctl, "Resource Limits"); 70ec125fbbSEdward Tomasz Napierala 71ec125fbbSEdward Tomasz Napierala #define HRF_DEFAULT 0 72ec125fbbSEdward Tomasz Napierala #define HRF_DONT_INHERIT 1 73ec125fbbSEdward Tomasz Napierala #define HRF_DONT_ACCUMULATE 2 74ec125fbbSEdward Tomasz Napierala 75ea228b48SEdward Tomasz Napierala #define RCTL_MAX_INBUFSIZE 4 * 1024 76ea228b48SEdward Tomasz Napierala #define RCTL_MAX_OUTBUFSIZE 16 * 1024 * 1024 77ec125fbbSEdward Tomasz Napierala #define RCTL_LOG_BUFSIZE 128 78ec125fbbSEdward Tomasz Napierala 7936af9869SEdward Tomasz Napierala #define RCTL_PCPU_SHIFT (10 * 1000000) 8036af9869SEdward Tomasz Napierala 81ae34b6ffSEdward Tomasz Napierala static unsigned int rctl_maxbufsize = RCTL_MAX_OUTBUFSIZE; 82f70c075eSEdward Tomasz Napierala static int rctl_log_rate_limit = 10; 83f70c075eSEdward Tomasz Napierala static int rctl_devctl_rate_limit = 10; 848bd8c8f1SEdward Tomasz Napierala 858bd8c8f1SEdward Tomasz Napierala /* 868bd8c8f1SEdward Tomasz Napierala * Values below are initialized in rctl_init(). 878bd8c8f1SEdward Tomasz Napierala */ 888bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min = -1; 898bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max = -1; 908bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct = -1; 918bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2 = -1; 928bd8c8f1SEdward Tomasz Napierala 938bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS); 948bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS); 958bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS); 968bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS); 972b4035eeSEdward Tomasz Napierala 98e0d69c5aSPawel Biernacki SYSCTL_NODE(_kern_racct, OID_AUTO, rctl, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 99e0d69c5aSPawel Biernacki "Resource Limits"); 1002b4035eeSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, maxbufsize, CTLFLAG_RWTUN, 1012b4035eeSEdward Tomasz Napierala &rctl_maxbufsize, 0, "Maximum output buffer size"); 102f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW, 103f70c075eSEdward Tomasz Napierala &rctl_log_rate_limit, 0, "Maximum number of log messages per second"); 1048bd8c8f1SEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RWTUN, 105f70c075eSEdward Tomasz Napierala &rctl_devctl_rate_limit, 0, "Maximum number of devctl messages per second"); 1068bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_min, 107e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 108e0d69c5aSPawel Biernacki &rctl_throttle_min_sysctl, "IU", 1098bd8c8f1SEdward Tomasz Napierala "Shortest throttling duration, in hz"); 1108bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_min", &rctl_throttle_min); 1118bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_max, 112e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 113e0d69c5aSPawel Biernacki &rctl_throttle_max_sysctl, "IU", 1148bd8c8f1SEdward Tomasz Napierala "Longest throttling duration, in hz"); 1158bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_max", &rctl_throttle_max); 1168bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct, 117e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 118e0d69c5aSPawel Biernacki &rctl_throttle_pct_sysctl, "IU", 119ae34b6ffSEdward Tomasz Napierala "Throttling penalty for process consumption, in percent"); 1208bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct", &rctl_throttle_pct); 1218bd8c8f1SEdward Tomasz Napierala SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct2, 122e0d69c5aSPawel Biernacki CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0, 123e0d69c5aSPawel Biernacki &rctl_throttle_pct2_sysctl, "IU", 124ae34b6ffSEdward Tomasz Napierala "Throttling penalty for container consumption, in percent"); 1258bd8c8f1SEdward Tomasz Napierala TUNABLE_INT("kern.racct.rctl.throttle_pct2", &rctl_throttle_pct2); 1262b4035eeSEdward Tomasz Napierala 127ec125fbbSEdward Tomasz Napierala /* 128ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 129ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 130ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 131ec125fbbSEdward Tomasz Napierala */ 132ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 133ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 134ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 135ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 136ec125fbbSEdward Tomasz Napierala }; 137ec125fbbSEdward Tomasz Napierala 138ec125fbbSEdward Tomasz Napierala struct dict { 139ec125fbbSEdward Tomasz Napierala const char *d_name; 140ec125fbbSEdward Tomasz Napierala int d_value; 141ec125fbbSEdward Tomasz Napierala }; 142ec125fbbSEdward Tomasz Napierala 143ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 144ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 145ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 146ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 147ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 148ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 149ec125fbbSEdward Tomasz Napierala 150ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 15185a2f1b4SEdward Tomasz Napierala { "cputime", RACCT_CPU }, 15285a2f1b4SEdward Tomasz Napierala { "datasize", RACCT_DATA }, 15385a2f1b4SEdward Tomasz Napierala { "stacksize", RACCT_STACK }, 15485a2f1b4SEdward Tomasz Napierala { "coredumpsize", RACCT_CORE }, 15585a2f1b4SEdward Tomasz Napierala { "memoryuse", RACCT_RSS }, 15685a2f1b4SEdward Tomasz Napierala { "memorylocked", RACCT_MEMLOCK }, 15785a2f1b4SEdward Tomasz Napierala { "maxproc", RACCT_NPROC }, 15885a2f1b4SEdward Tomasz Napierala { "openfiles", RACCT_NOFILE }, 15985a2f1b4SEdward Tomasz Napierala { "vmemoryuse", RACCT_VMEM }, 16085a2f1b4SEdward Tomasz Napierala { "pseudoterminals", RACCT_NPTS }, 16185a2f1b4SEdward Tomasz Napierala { "swapuse", RACCT_SWAP }, 162ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 163ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 164ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 165ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 166ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 167ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 168ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 169ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 170ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 17136af9869SEdward Tomasz Napierala { "pcpu", RACCT_PCTCPU }, 172ae34b6ffSEdward Tomasz Napierala { "readbps", RACCT_READBPS }, 173ae34b6ffSEdward Tomasz Napierala { "writebps", RACCT_WRITEBPS }, 174ae34b6ffSEdward Tomasz Napierala { "readiops", RACCT_READIOPS }, 175ae34b6ffSEdward Tomasz Napierala { "writeiops", RACCT_WRITEIOPS }, 176ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 177ec125fbbSEdward Tomasz Napierala 178ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 179ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 180ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 181ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 182ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 183ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 184ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 185ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 186ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 187ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 188ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 189ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 190ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 191ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 192ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 193ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 194ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 195ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 196ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 197ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 198ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 199ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 200ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 201ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 202ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 203ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 204ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 205ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 206ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 207ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 208ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 209ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 210ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 211ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 212ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 213ae34b6ffSEdward Tomasz Napierala { "throttle", RCTL_ACTION_THROTTLE }, 214ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 215ec125fbbSEdward Tomasz Napierala 216ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 217ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 218ec125fbbSEdward Tomasz Napierala 219ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 220c1a43e73SEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 2214c230cdaSEdward Tomasz Napierala 222ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 223ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 224ec125fbbSEdward Tomasz Napierala 225d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 226ec125fbbSEdward Tomasz Napierala 2278bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS) 2288bd8c8f1SEdward Tomasz Napierala { 229c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_min; 2308bd8c8f1SEdward Tomasz Napierala 2318bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2328bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2338bd8c8f1SEdward Tomasz Napierala return (error); 2348bd8c8f1SEdward Tomasz Napierala if (val < 1 || val > rctl_throttle_max) 2358bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2368bd8c8f1SEdward Tomasz Napierala 237bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2388bd8c8f1SEdward Tomasz Napierala rctl_throttle_min = val; 239bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2408bd8c8f1SEdward Tomasz Napierala 2418bd8c8f1SEdward Tomasz Napierala return (0); 2428bd8c8f1SEdward Tomasz Napierala } 2438bd8c8f1SEdward Tomasz Napierala 2448bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS) 2458bd8c8f1SEdward Tomasz Napierala { 246c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_max; 2478bd8c8f1SEdward Tomasz Napierala 2488bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2498bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2508bd8c8f1SEdward Tomasz Napierala return (error); 2518bd8c8f1SEdward Tomasz Napierala if (val < rctl_throttle_min) 2528bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2538bd8c8f1SEdward Tomasz Napierala 254bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2558bd8c8f1SEdward Tomasz Napierala rctl_throttle_max = val; 256bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2578bd8c8f1SEdward Tomasz Napierala 2588bd8c8f1SEdward Tomasz Napierala return (0); 2598bd8c8f1SEdward Tomasz Napierala } 2608bd8c8f1SEdward Tomasz Napierala 2618bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS) 2628bd8c8f1SEdward Tomasz Napierala { 263c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct; 2648bd8c8f1SEdward Tomasz Napierala 2658bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2668bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2678bd8c8f1SEdward Tomasz Napierala return (error); 2688bd8c8f1SEdward Tomasz Napierala if (val < 0) 2698bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2708bd8c8f1SEdward Tomasz Napierala 271bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2728bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct = val; 273bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2748bd8c8f1SEdward Tomasz Napierala 2758bd8c8f1SEdward Tomasz Napierala return (0); 2768bd8c8f1SEdward Tomasz Napierala } 2778bd8c8f1SEdward Tomasz Napierala 2788bd8c8f1SEdward Tomasz Napierala static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS) 2798bd8c8f1SEdward Tomasz Napierala { 280c1a43e73SEdward Tomasz Napierala int error, val = rctl_throttle_pct2; 2818bd8c8f1SEdward Tomasz Napierala 2828bd8c8f1SEdward Tomasz Napierala error = sysctl_handle_int(oidp, &val, 0, req); 2838bd8c8f1SEdward Tomasz Napierala if (error || !req->newptr) 2848bd8c8f1SEdward Tomasz Napierala return (error); 2858bd8c8f1SEdward Tomasz Napierala if (val < 0) 2868bd8c8f1SEdward Tomasz Napierala return (EINVAL); 2878bd8c8f1SEdward Tomasz Napierala 288bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2898bd8c8f1SEdward Tomasz Napierala rctl_throttle_pct2 = val; 290bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2918bd8c8f1SEdward Tomasz Napierala 2928bd8c8f1SEdward Tomasz Napierala return (0); 2938bd8c8f1SEdward Tomasz Napierala } 2948bd8c8f1SEdward Tomasz Napierala 295ec125fbbSEdward Tomasz Napierala static const char * 296ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 297ec125fbbSEdward Tomasz Napierala { 298ec125fbbSEdward Tomasz Napierala int i; 299ec125fbbSEdward Tomasz Napierala 300ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 301ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 302ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 303ec125fbbSEdward Tomasz Napierala } 304ec125fbbSEdward Tomasz Napierala 305ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 306ec125fbbSEdward Tomasz Napierala } 307ec125fbbSEdward Tomasz Napierala 308ec125fbbSEdward Tomasz Napierala static const char * 309ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 310ec125fbbSEdward Tomasz Napierala { 311ec125fbbSEdward Tomasz Napierala int i; 312ec125fbbSEdward Tomasz Napierala 313ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 314ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 315ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 316ec125fbbSEdward Tomasz Napierala } 317ec125fbbSEdward Tomasz Napierala 318ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 319ec125fbbSEdward Tomasz Napierala } 320ec125fbbSEdward Tomasz Napierala 321ec125fbbSEdward Tomasz Napierala const char * 322ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 323ec125fbbSEdward Tomasz Napierala { 324ec125fbbSEdward Tomasz Napierala int i; 325ec125fbbSEdward Tomasz Napierala 326ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 327ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 328ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 329ec125fbbSEdward Tomasz Napierala } 330ec125fbbSEdward Tomasz Napierala 331ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 332ec125fbbSEdward Tomasz Napierala } 333ec125fbbSEdward Tomasz Napierala 334ac3c9819SEdward Tomasz Napierala static struct racct * 335ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 336ac3c9819SEdward Tomasz Napierala { 337ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 338ac3c9819SEdward Tomasz Napierala 339ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 340bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 341ac3c9819SEdward Tomasz Napierala 342ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 343ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 344ac3c9819SEdward Tomasz Napierala return (p->p_racct); 345ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 346ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 347ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 348ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 349ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 350ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 351ac3c9819SEdward Tomasz Napierala default: 352ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 353ac3c9819SEdward Tomasz Napierala } 354ac3c9819SEdward Tomasz Napierala } 355ac3c9819SEdward Tomasz Napierala 356ec125fbbSEdward Tomasz Napierala /* 357ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 358ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 359ec125fbbSEdward Tomasz Napierala */ 360ec125fbbSEdward Tomasz Napierala static int64_t 361ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 362ec125fbbSEdward Tomasz Napierala { 363ac3c9819SEdward Tomasz Napierala const struct racct *racct; 364c1a43e73SEdward Tomasz Napierala int64_t available; 365ec125fbbSEdward Tomasz Napierala 3664b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 367bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 368ec125fbbSEdward Tomasz Napierala 369ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 370ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 371ec125fbbSEdward Tomasz Napierala 372ec125fbbSEdward Tomasz Napierala return (available); 373ec125fbbSEdward Tomasz Napierala } 374ec125fbbSEdward Tomasz Napierala 375ec125fbbSEdward Tomasz Napierala /* 376ae34b6ffSEdward Tomasz Napierala * Called every second for proc, uidinfo, loginclass, and jail containers. 377ae34b6ffSEdward Tomasz Napierala * If the limit isn't exceeded, it decreases the usage amount to zero. 378ae34b6ffSEdward Tomasz Napierala * Otherwise, it decreases it by the value of the limit. This way 379ae34b6ffSEdward Tomasz Napierala * resource consumption exceeding the limit "carries over" to the next 380ae34b6ffSEdward Tomasz Napierala * period. 381ec125fbbSEdward Tomasz Napierala */ 382ae34b6ffSEdward Tomasz Napierala void 383ae34b6ffSEdward Tomasz Napierala rctl_throttle_decay(struct racct *racct, int resource) 384ec125fbbSEdward Tomasz Napierala { 385ae34b6ffSEdward Tomasz Napierala struct rctl_rule *rule; 386ae34b6ffSEdward Tomasz Napierala struct rctl_rule_link *link; 387ae34b6ffSEdward Tomasz Napierala int64_t minavailable; 388ec125fbbSEdward Tomasz Napierala 3894b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 390bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 391ec125fbbSEdward Tomasz Napierala 392ae34b6ffSEdward Tomasz Napierala minavailable = INT64_MAX; 393ec125fbbSEdward Tomasz Napierala 394ae34b6ffSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 395ae34b6ffSEdward Tomasz Napierala rule = link->rrl_rule; 396ae34b6ffSEdward Tomasz Napierala 397ae34b6ffSEdward Tomasz Napierala if (rule->rr_resource != resource) 398ae34b6ffSEdward Tomasz Napierala continue; 399ae34b6ffSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_THROTTLE) 400ae34b6ffSEdward Tomasz Napierala continue; 401ae34b6ffSEdward Tomasz Napierala 402ae34b6ffSEdward Tomasz Napierala if (rule->rr_amount < minavailable) 403ae34b6ffSEdward Tomasz Napierala minavailable = rule->rr_amount; 404ae34b6ffSEdward Tomasz Napierala } 405ae34b6ffSEdward Tomasz Napierala 406ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] < minavailable) { 407ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = 0; 408ae34b6ffSEdward Tomasz Napierala } else { 409ae34b6ffSEdward Tomasz Napierala /* 410ae34b6ffSEdward Tomasz Napierala * Cap utilization counter at ten times the limit. Otherwise, 411ae34b6ffSEdward Tomasz Napierala * if we changed the rule lowering the allowed amount, it could 412ae34b6ffSEdward Tomasz Napierala * take unreasonably long time for the accumulated resource 413ae34b6ffSEdward Tomasz Napierala * usage to drop. 414ae34b6ffSEdward Tomasz Napierala */ 415ae34b6ffSEdward Tomasz Napierala if (racct->r_resources[resource] > minavailable * 10) 416ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] = minavailable * 10; 417ae34b6ffSEdward Tomasz Napierala 418ae34b6ffSEdward Tomasz Napierala racct->r_resources[resource] -= minavailable; 419ae34b6ffSEdward Tomasz Napierala } 420ec125fbbSEdward Tomasz Napierala } 421ec125fbbSEdward Tomasz Napierala 422ec125fbbSEdward Tomasz Napierala /* 423af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 42436af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 42536af9869SEdward Tomasz Napierala */ 42636af9869SEdward Tomasz Napierala int64_t 42736af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 42836af9869SEdward Tomasz Napierala struct rctl_rule *rule; 42936af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 43036af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 43136af9869SEdward Tomasz Napierala 4324b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 433bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 4344b5c9cf6SEdward Tomasz Napierala 43536af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 43636af9869SEdward Tomasz Napierala limit = 0; 43736af9869SEdward Tomasz Napierala 43836af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 43936af9869SEdward Tomasz Napierala rule = link->rrl_rule; 44036af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 44136af9869SEdward Tomasz Napierala continue; 44236af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 44336af9869SEdward Tomasz Napierala continue; 44436af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 44536af9869SEdward Tomasz Napierala if (available < minavailable) { 44636af9869SEdward Tomasz Napierala minavailable = available; 44736af9869SEdward Tomasz Napierala limit = rule->rr_amount; 44836af9869SEdward Tomasz Napierala } 44936af9869SEdward Tomasz Napierala } 45036af9869SEdward Tomasz Napierala 45136af9869SEdward Tomasz Napierala /* 45236af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 453e3043798SPedro F. Giffuni * %cpu resource. This makes %cpu throttling more aggressive 45436af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 45536af9869SEdward Tomasz Napierala */ 45636af9869SEdward Tomasz Napierala if (limit != 0) { 45736af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 45836af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 45936af9869SEdward Tomasz Napierala else 46036af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 46136af9869SEdward Tomasz Napierala } 46236af9869SEdward Tomasz Napierala 46336af9869SEdward Tomasz Napierala return (minavailable); 46436af9869SEdward Tomasz Napierala } 46536af9869SEdward Tomasz Napierala 466ae34b6ffSEdward Tomasz Napierala static uint64_t 467ae34b6ffSEdward Tomasz Napierala xadd(uint64_t a, uint64_t b) 468ae34b6ffSEdward Tomasz Napierala { 469ae34b6ffSEdward Tomasz Napierala uint64_t c; 470ae34b6ffSEdward Tomasz Napierala 471ae34b6ffSEdward Tomasz Napierala c = a + b; 472ae34b6ffSEdward Tomasz Napierala 473ae34b6ffSEdward Tomasz Napierala /* 474ae34b6ffSEdward Tomasz Napierala * Detect overflow. 475ae34b6ffSEdward Tomasz Napierala */ 476ae34b6ffSEdward Tomasz Napierala if (c < a || c < b) 477ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 478ae34b6ffSEdward Tomasz Napierala 479ae34b6ffSEdward Tomasz Napierala return (c); 480ae34b6ffSEdward Tomasz Napierala } 481ae34b6ffSEdward Tomasz Napierala 482ae34b6ffSEdward Tomasz Napierala static uint64_t 483ae34b6ffSEdward Tomasz Napierala xmul(uint64_t a, uint64_t b) 484ae34b6ffSEdward Tomasz Napierala { 485ae34b6ffSEdward Tomasz Napierala 486f459a818SEdward Tomasz Napierala if (b != 0 && a > UINT64_MAX / b) 487ae34b6ffSEdward Tomasz Napierala return (UINT64_MAX); 488ae34b6ffSEdward Tomasz Napierala 489f459a818SEdward Tomasz Napierala return (a * b); 490ae34b6ffSEdward Tomasz Napierala } 491ae34b6ffSEdward Tomasz Napierala 49236af9869SEdward Tomasz Napierala /* 493ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 494ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 495ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 496ec125fbbSEdward Tomasz Napierala */ 497ec125fbbSEdward Tomasz Napierala int 498ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 499ec125fbbSEdward Tomasz Napierala { 500f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 501f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 502ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 503ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 504ec125fbbSEdward Tomasz Napierala struct sbuf sb; 505c1a43e73SEdward Tomasz Napierala char *buf; 506ae34b6ffSEdward Tomasz Napierala int64_t available; 507ae34b6ffSEdward Tomasz Napierala uint64_t sleep_ms, sleep_ratio; 508ec125fbbSEdward Tomasz Napierala int should_deny = 0; 509ec125fbbSEdward Tomasz Napierala 5104b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 511bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 512ec125fbbSEdward Tomasz Napierala 513ec125fbbSEdward Tomasz Napierala /* 514ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 515ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 516ec125fbbSEdward Tomasz Napierala */ 517ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 518ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 519ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 520ec125fbbSEdward Tomasz Napierala continue; 521ae34b6ffSEdward Tomasz Napierala 522ae34b6ffSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 523ae34b6ffSEdward Tomasz Napierala if (available >= (int64_t)amount) { 524ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 525ec125fbbSEdward Tomasz Napierala continue; 526ec125fbbSEdward Tomasz Napierala } 527ec125fbbSEdward Tomasz Napierala 528ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 529ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 530ec125fbbSEdward Tomasz Napierala should_deny = 1; 531ec125fbbSEdward Tomasz Napierala continue; 532ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 533ec125fbbSEdward Tomasz Napierala /* 534ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 535ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 536ec125fbbSEdward Tomasz Napierala */ 537ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 538ec125fbbSEdward Tomasz Napierala continue; 539ec125fbbSEdward Tomasz Napierala 54072a401d9SEdward Tomasz Napierala /* 54172a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 54272a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 54372a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 54472a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 54572a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 54672a401d9SEdward Tomasz Napierala */ 54772a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 54872a401d9SEdward Tomasz Napierala continue; 54972a401d9SEdward Tomasz Napierala 550f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 551f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 552ec125fbbSEdward Tomasz Napierala continue; 553ec125fbbSEdward Tomasz Napierala 554ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 555ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 556ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 557ec125fbbSEdward Tomasz Napierala continue; 558ec125fbbSEdward Tomasz Napierala } 559ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 560ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 561ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 562ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 563ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 564ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 565a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 566ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 567ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 568ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 569ec125fbbSEdward Tomasz Napierala continue; 570ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 571ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 572ec125fbbSEdward Tomasz Napierala continue; 573ec125fbbSEdward Tomasz Napierala 57472a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 57572a401d9SEdward Tomasz Napierala continue; 57672a401d9SEdward Tomasz Napierala 577f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 578f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 579f70c075eSEdward Tomasz Napierala continue; 580f70c075eSEdward Tomasz Napierala 581ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 582ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 583ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 584ec125fbbSEdward Tomasz Napierala continue; 585ec125fbbSEdward Tomasz Napierala } 586ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 587ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 588ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 589ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 590ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 591a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 592ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 593887611b1SWarner Losh devctl_notify("RCTL", "rule", "matched", 594887611b1SWarner Losh sbuf_data(&sb)); 595ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 596ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 597ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 598ec125fbbSEdward Tomasz Napierala continue; 599ae34b6ffSEdward Tomasz Napierala case RCTL_ACTION_THROTTLE: 600ae34b6ffSEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 601ae34b6ffSEdward Tomasz Napierala continue; 602ae34b6ffSEdward Tomasz Napierala 603*e8a5a1adSJason A. Harmening if (rule->rr_amount == 0) { 604*e8a5a1adSJason A. Harmening racct_proc_throttle(p, rctl_throttle_max); 605*e8a5a1adSJason A. Harmening continue; 606*e8a5a1adSJason A. Harmening } 607*e8a5a1adSJason A. Harmening 608ae34b6ffSEdward Tomasz Napierala /* 609ae34b6ffSEdward Tomasz Napierala * Make the process sleep for a fraction of second 610ae34b6ffSEdward Tomasz Napierala * proportional to the ratio of process' resource 611ae34b6ffSEdward Tomasz Napierala * utilization compared to the limit. The point is 612ae34b6ffSEdward Tomasz Napierala * to penalize resource hogs: processes that consume 613ae34b6ffSEdward Tomasz Napierala * more of the available resources sleep for longer. 614ae34b6ffSEdward Tomasz Napierala * 615ae34b6ffSEdward Tomasz Napierala * We're trying to defer division until the very end, 616ae34b6ffSEdward Tomasz Napierala * to minimize the rounding effects. The following 617ae34b6ffSEdward Tomasz Napierala * calculation could have been written in a clearer 618ae34b6ffSEdward Tomasz Napierala * way like this: 619ae34b6ffSEdward Tomasz Napierala * 620ae34b6ffSEdward Tomasz Napierala * sleep_ms = hz * p->p_racct->r_resources[resource] / 621ae34b6ffSEdward Tomasz Napierala * rule->rr_amount; 622ae34b6ffSEdward Tomasz Napierala * sleep_ms *= rctl_throttle_pct / 100; 623ae34b6ffSEdward Tomasz Napierala * if (sleep_ms < rctl_throttle_min) 624ae34b6ffSEdward Tomasz Napierala * sleep_ms = rctl_throttle_min; 625ae34b6ffSEdward Tomasz Napierala * 626ae34b6ffSEdward Tomasz Napierala */ 627ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(hz, p->p_racct->r_resources[resource]); 628ae34b6ffSEdward Tomasz Napierala sleep_ms = xmul(sleep_ms, rctl_throttle_pct) / 100; 629ae34b6ffSEdward Tomasz Napierala if (sleep_ms < rctl_throttle_min * rule->rr_amount) 630ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_min * rule->rr_amount; 631ae34b6ffSEdward Tomasz Napierala 632ae34b6ffSEdward Tomasz Napierala /* 633ae34b6ffSEdward Tomasz Napierala * Multiply that by the ratio of the resource 634ae34b6ffSEdward Tomasz Napierala * consumption for the container compared to the limit, 635ae34b6ffSEdward Tomasz Napierala * squared. In other words, a process in a container 636ae34b6ffSEdward Tomasz Napierala * that is two times over the limit will be throttled 637ae34b6ffSEdward Tomasz Napierala * four times as much for hitting the same rule. The 638ae34b6ffSEdward Tomasz Napierala * point is to penalize processes more if the container 639ae34b6ffSEdward Tomasz Napierala * itself (eg certain UID or jail) is above the limit. 640ae34b6ffSEdward Tomasz Napierala */ 641ae34b6ffSEdward Tomasz Napierala if (available < 0) 642ae34b6ffSEdward Tomasz Napierala sleep_ratio = -available / rule->rr_amount; 643ae34b6ffSEdward Tomasz Napierala else 644ae34b6ffSEdward Tomasz Napierala sleep_ratio = 0; 645ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, sleep_ratio); 646ae34b6ffSEdward Tomasz Napierala sleep_ratio = xmul(sleep_ratio, rctl_throttle_pct2) / 100; 647ae34b6ffSEdward Tomasz Napierala sleep_ms = xadd(sleep_ms, xmul(sleep_ms, sleep_ratio)); 648ae34b6ffSEdward Tomasz Napierala 649ae34b6ffSEdward Tomasz Napierala /* 650ae34b6ffSEdward Tomasz Napierala * Finally the division. 651ae34b6ffSEdward Tomasz Napierala */ 652ae34b6ffSEdward Tomasz Napierala sleep_ms /= rule->rr_amount; 653ae34b6ffSEdward Tomasz Napierala 654ae34b6ffSEdward Tomasz Napierala if (sleep_ms > rctl_throttle_max) 655ae34b6ffSEdward Tomasz Napierala sleep_ms = rctl_throttle_max; 656ae34b6ffSEdward Tomasz Napierala #if 0 65774a7305aSEdward Tomasz Napierala printf("%s: pid %d (%s), %jd of %jd, will sleep for %ju ms (ratio %ju, available %jd)\n", 658ae34b6ffSEdward Tomasz Napierala __func__, p->p_pid, p->p_comm, 659ae34b6ffSEdward Tomasz Napierala p->p_racct->r_resources[resource], 66074a7305aSEdward Tomasz Napierala rule->rr_amount, (uintmax_t)sleep_ms, 66174a7305aSEdward Tomasz Napierala (uintmax_t)sleep_ratio, (intmax_t)available); 662ae34b6ffSEdward Tomasz Napierala #endif 663ae34b6ffSEdward Tomasz Napierala 664ae34b6ffSEdward Tomasz Napierala KASSERT(sleep_ms >= rctl_throttle_min, ("%s: %ju < %d\n", 665ae34b6ffSEdward Tomasz Napierala __func__, (uintmax_t)sleep_ms, rctl_throttle_min)); 666ae34b6ffSEdward Tomasz Napierala racct_proc_throttle(p, sleep_ms); 667ae34b6ffSEdward Tomasz Napierala continue; 668ec125fbbSEdward Tomasz Napierala default: 669ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 670ec125fbbSEdward Tomasz Napierala continue; 671ec125fbbSEdward Tomasz Napierala 67272a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 67372a401d9SEdward Tomasz Napierala continue; 67472a401d9SEdward Tomasz Napierala 675ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 676ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 677ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 678ec125fbbSEdward Tomasz Napierala rule->rr_action)); 679ec125fbbSEdward Tomasz Napierala 680ec125fbbSEdward Tomasz Napierala /* 681ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 682ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 683ec125fbbSEdward Tomasz Napierala */ 6848451d0ddSKip Macy kern_psignal(p, rule->rr_action); 685ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 686ec125fbbSEdward Tomasz Napierala continue; 687ec125fbbSEdward Tomasz Napierala } 688ec125fbbSEdward Tomasz Napierala } 689ec125fbbSEdward Tomasz Napierala 690ec125fbbSEdward Tomasz Napierala if (should_deny) { 691ec125fbbSEdward Tomasz Napierala /* 692ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 693ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 694ec125fbbSEdward Tomasz Napierala */ 695ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 696ec125fbbSEdward Tomasz Napierala } 697ec125fbbSEdward Tomasz Napierala 698ec125fbbSEdward Tomasz Napierala return (0); 699ec125fbbSEdward Tomasz Napierala } 700ec125fbbSEdward Tomasz Napierala 701ec125fbbSEdward Tomasz Napierala uint64_t 702ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 703ec125fbbSEdward Tomasz Napierala { 704ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 705ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 706ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 707ec125fbbSEdward Tomasz Napierala 7084b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 709bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 710ec125fbbSEdward Tomasz Napierala 711ec125fbbSEdward Tomasz Napierala /* 712ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 713ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 714ec125fbbSEdward Tomasz Napierala */ 715ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 716ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 717ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 718ec125fbbSEdward Tomasz Napierala continue; 719ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 720ec125fbbSEdward Tomasz Napierala continue; 721ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 722ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 723ec125fbbSEdward Tomasz Napierala } 724ec125fbbSEdward Tomasz Napierala 725ec125fbbSEdward Tomasz Napierala return (amount); 726ec125fbbSEdward Tomasz Napierala } 727ec125fbbSEdward Tomasz Napierala 728ec125fbbSEdward Tomasz Napierala uint64_t 729ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 730ec125fbbSEdward Tomasz Napierala { 731ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 732ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 733ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 734ec125fbbSEdward Tomasz Napierala 735ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 736ec125fbbSEdward Tomasz Napierala 7374b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 738bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 739ec125fbbSEdward Tomasz Napierala 740ec125fbbSEdward Tomasz Napierala /* 741ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 742ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 743ec125fbbSEdward Tomasz Napierala */ 744ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 745ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 746ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 747ec125fbbSEdward Tomasz Napierala continue; 748ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 749ec125fbbSEdward Tomasz Napierala continue; 750ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 751ec125fbbSEdward Tomasz Napierala if (available < minavailable) 752ec125fbbSEdward Tomasz Napierala minavailable = available; 753ec125fbbSEdward Tomasz Napierala } 754ec125fbbSEdward Tomasz Napierala 755ec125fbbSEdward Tomasz Napierala /* 756ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 757ec125fbbSEdward Tomasz Napierala */ 758ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 759ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 760ec125fbbSEdward Tomasz Napierala minavailable += allocated; 761ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 762ec125fbbSEdward Tomasz Napierala minavailable = 0; 763bbe4eb6dSEdward Tomasz Napierala 764ec125fbbSEdward Tomasz Napierala return (minavailable); 765ec125fbbSEdward Tomasz Napierala } 766ec125fbbSEdward Tomasz Napierala 767ec125fbbSEdward Tomasz Napierala static int 768ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 769ec125fbbSEdward Tomasz Napierala { 770ec125fbbSEdward Tomasz Napierala 7714b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7724b5c9cf6SEdward Tomasz Napierala 773ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 774ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 775ec125fbbSEdward Tomasz Napierala return (0); 776ec125fbbSEdward Tomasz Napierala 777ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 778ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 779ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 780ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 781ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 782ec125fbbSEdward Tomasz Napierala return (0); 783ec125fbbSEdward Tomasz Napierala break; 784ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 785ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 786ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 787ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 788ec125fbbSEdward Tomasz Napierala return (0); 789ec125fbbSEdward Tomasz Napierala break; 790ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 791415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 792415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 793415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 794ec125fbbSEdward Tomasz Napierala return (0); 795ec125fbbSEdward Tomasz Napierala break; 796ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 797a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 798a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 799a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 800ec125fbbSEdward Tomasz Napierala return (0); 801ec125fbbSEdward Tomasz Napierala break; 802ec125fbbSEdward Tomasz Napierala default: 803ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 804ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 805ec125fbbSEdward Tomasz Napierala } 806ec125fbbSEdward Tomasz Napierala } 807ec125fbbSEdward Tomasz Napierala 808ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 809ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 810ec125fbbSEdward Tomasz Napierala return (0); 811ec125fbbSEdward Tomasz Napierala } 812ec125fbbSEdward Tomasz Napierala 813ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 814ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 815ec125fbbSEdward Tomasz Napierala return (0); 816ec125fbbSEdward Tomasz Napierala } 817ec125fbbSEdward Tomasz Napierala 818ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 819ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 820ec125fbbSEdward Tomasz Napierala return (0); 821ec125fbbSEdward Tomasz Napierala } 822ec125fbbSEdward Tomasz Napierala 823ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 824ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 825ec125fbbSEdward Tomasz Napierala return (0); 826ec125fbbSEdward Tomasz Napierala } 827ec125fbbSEdward Tomasz Napierala 828ec125fbbSEdward Tomasz Napierala return (1); 829ec125fbbSEdward Tomasz Napierala } 830ec125fbbSEdward Tomasz Napierala 831ec125fbbSEdward Tomasz Napierala static int 832ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 833ec125fbbSEdward Tomasz Napierala { 834ec125fbbSEdward Tomasz Napierala int i; 835ec125fbbSEdward Tomasz Napierala 836ec125fbbSEdward Tomasz Napierala if (value == NULL) 837ec125fbbSEdward Tomasz Napierala return (EINVAL); 838ec125fbbSEdward Tomasz Napierala 839ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 840ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 841ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 842ec125fbbSEdward Tomasz Napierala return (0); 843ec125fbbSEdward Tomasz Napierala } 844ec125fbbSEdward Tomasz Napierala } 845ec125fbbSEdward Tomasz Napierala 846ec125fbbSEdward Tomasz Napierala return (EINVAL); 847ec125fbbSEdward Tomasz Napierala } 848ec125fbbSEdward Tomasz Napierala 849ec125fbbSEdward Tomasz Napierala static int 850ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 851ec125fbbSEdward Tomasz Napierala { 852ec125fbbSEdward Tomasz Napierala char *end; 853ec125fbbSEdward Tomasz Napierala 854ec125fbbSEdward Tomasz Napierala if (str == NULL) 855ec125fbbSEdward Tomasz Napierala return (EINVAL); 856ec125fbbSEdward Tomasz Napierala 857ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 858ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 859ec125fbbSEdward Tomasz Napierala return (EINVAL); 860ec125fbbSEdward Tomasz Napierala 861ec125fbbSEdward Tomasz Napierala return (0); 862ec125fbbSEdward Tomasz Napierala } 863ec125fbbSEdward Tomasz Napierala 864ec125fbbSEdward Tomasz Napierala static int 865ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 866ec125fbbSEdward Tomasz Napierala { 867ec125fbbSEdward Tomasz Napierala char *end; 868ec125fbbSEdward Tomasz Napierala 869ec125fbbSEdward Tomasz Napierala if (str == NULL) 870ec125fbbSEdward Tomasz Napierala return (EINVAL); 871ec125fbbSEdward Tomasz Napierala 872ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 873ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 874ec125fbbSEdward Tomasz Napierala return (EINVAL); 875ec125fbbSEdward Tomasz Napierala 876b450d447SEdward Tomasz Napierala if (*value < 0) 877b450d447SEdward Tomasz Napierala return (ERANGE); 878b450d447SEdward Tomasz Napierala 879ec125fbbSEdward Tomasz Napierala return (0); 880ec125fbbSEdward Tomasz Napierala } 881ec125fbbSEdward Tomasz Napierala 882ec125fbbSEdward Tomasz Napierala /* 883ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 884ec125fbbSEdward Tomasz Napierala */ 885ec125fbbSEdward Tomasz Napierala static void 886ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 887ec125fbbSEdward Tomasz Napierala { 888ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 889ec125fbbSEdward Tomasz Napierala 8904b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 891ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 892ec125fbbSEdward Tomasz Napierala 893ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 894ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 895ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 896ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 897ec125fbbSEdward Tomasz Napierala 898bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 899ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 900bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 901ec125fbbSEdward Tomasz Napierala } 902ec125fbbSEdward Tomasz Napierala 903ec125fbbSEdward Tomasz Napierala static int 904ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 905ec125fbbSEdward Tomasz Napierala { 906ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 907ec125fbbSEdward Tomasz Napierala 9084b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 909ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 910bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 911ec125fbbSEdward Tomasz Napierala 912ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 913ec125fbbSEdward Tomasz Napierala if (link == NULL) 914ec125fbbSEdward Tomasz Napierala return (ENOMEM); 915ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 916ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 917ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 918ec125fbbSEdward Tomasz Napierala 919ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 920bbe4eb6dSEdward Tomasz Napierala 921ec125fbbSEdward Tomasz Napierala return (0); 922ec125fbbSEdward Tomasz Napierala } 923ec125fbbSEdward Tomasz Napierala 924ec125fbbSEdward Tomasz Napierala /* 925ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 926ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 927ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 928ec125fbbSEdward Tomasz Napierala */ 929ec125fbbSEdward Tomasz Napierala static int 930ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 931ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 932ec125fbbSEdward Tomasz Napierala { 933ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 934c1a43e73SEdward Tomasz Napierala int removed = 0; 935ec125fbbSEdward Tomasz Napierala 9364b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 937bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 938ec125fbbSEdward Tomasz Napierala 939ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 940ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 941ec125fbbSEdward Tomasz Napierala continue; 942ec125fbbSEdward Tomasz Napierala 943ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 944ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 945ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 946ec125fbbSEdward Tomasz Napierala removed++; 947ec125fbbSEdward Tomasz Napierala } 948ec125fbbSEdward Tomasz Napierala return (removed); 949ec125fbbSEdward Tomasz Napierala } 950ec125fbbSEdward Tomasz Napierala 951ec125fbbSEdward Tomasz Napierala static void 952ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 953ec125fbbSEdward Tomasz Napierala { 954ec125fbbSEdward Tomasz Napierala 9554b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9564b5c9cf6SEdward Tomasz Napierala 957ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 958ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 959ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 960a7ad07bfSEdward Tomasz Napierala break; 961ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 962a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 963a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 964ec125fbbSEdward Tomasz Napierala break; 965ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 966ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 967ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 968ec125fbbSEdward Tomasz Napierala break; 969ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 970415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 971415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 972ec125fbbSEdward Tomasz Napierala break; 973ec125fbbSEdward Tomasz Napierala default: 974ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 975ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 976ec125fbbSEdward Tomasz Napierala } 977ec125fbbSEdward Tomasz Napierala } 978ec125fbbSEdward Tomasz Napierala 979ec125fbbSEdward Tomasz Napierala static void 980ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 981ec125fbbSEdward Tomasz Napierala { 982ec125fbbSEdward Tomasz Napierala 9834b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9844b5c9cf6SEdward Tomasz Napierala 985ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 986ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 987ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 988a7ad07bfSEdward Tomasz Napierala break; 989ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 990a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 991a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 992ec125fbbSEdward Tomasz Napierala break; 993ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 994ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 995ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 996ec125fbbSEdward Tomasz Napierala break; 997ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 998415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 999415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 1000ec125fbbSEdward Tomasz Napierala break; 1001ec125fbbSEdward Tomasz Napierala default: 1002ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 1003ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1004ec125fbbSEdward Tomasz Napierala } 1005ec125fbbSEdward Tomasz Napierala } 1006ec125fbbSEdward Tomasz Napierala 1007ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1008ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 1009ec125fbbSEdward Tomasz Napierala { 1010ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1011ec125fbbSEdward Tomasz Napierala 10124b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10134b5c9cf6SEdward Tomasz Napierala 1014ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 1015ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1016ec125fbbSEdward Tomasz Napierala return (NULL); 1017ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1018ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1019ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1020415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1021a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1022ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1023ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1024ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1025ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1026ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 1027ec125fbbSEdward Tomasz Napierala 1028ec125fbbSEdward Tomasz Napierala return (rule); 1029ec125fbbSEdward Tomasz Napierala } 1030ec125fbbSEdward Tomasz Napierala 1031ec125fbbSEdward Tomasz Napierala struct rctl_rule * 1032ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 1033ec125fbbSEdward Tomasz Napierala { 1034ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 1035ec125fbbSEdward Tomasz Napierala 10364b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 10374b5c9cf6SEdward Tomasz Napierala 1038ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 1039ec125fbbSEdward Tomasz Napierala if (copy == NULL) 1040ec125fbbSEdward Tomasz Napierala return (NULL); 1041ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 1042ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 1043ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 1044415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 1045a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 1046ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 1047ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 1048ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 1049ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 1050ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 1051ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 1052ec125fbbSEdward Tomasz Napierala 1053ec125fbbSEdward Tomasz Napierala return (copy); 1054ec125fbbSEdward Tomasz Napierala } 1055ec125fbbSEdward Tomasz Napierala 1056ec125fbbSEdward Tomasz Napierala void 1057ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 1058ec125fbbSEdward Tomasz Napierala { 1059ec125fbbSEdward Tomasz Napierala 10604b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1061ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1062ec125fbbSEdward Tomasz Napierala 1063ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 1064ec125fbbSEdward Tomasz Napierala } 1065ec125fbbSEdward Tomasz Napierala 1066ec125fbbSEdward Tomasz Napierala static void 1067ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 1068ec125fbbSEdward Tomasz Napierala { 1069ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1070ec125fbbSEdward Tomasz Napierala 1071ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 1072ec125fbbSEdward Tomasz Napierala 10734b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1074ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 1075ec125fbbSEdward Tomasz Napierala 1076ec125fbbSEdward Tomasz Napierala /* 1077ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 1078ec125fbbSEdward Tomasz Napierala */ 1079ec125fbbSEdward Tomasz Napierala 1080ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 1081ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 1082ec125fbbSEdward Tomasz Napierala } 1083ec125fbbSEdward Tomasz Napierala 1084ec125fbbSEdward Tomasz Napierala void 1085ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 1086ec125fbbSEdward Tomasz Napierala { 1087ec125fbbSEdward Tomasz Napierala 10884b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1089ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 1090ec125fbbSEdward Tomasz Napierala 1091ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 1092ec125fbbSEdward Tomasz Napierala /* 1093ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 1094ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 1095ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 1096ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 1097ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 1098ec125fbbSEdward Tomasz Napierala */ 1099ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 1100ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 1101ec125fbbSEdward Tomasz Napierala } 1102ec125fbbSEdward Tomasz Napierala } 1103ec125fbbSEdward Tomasz Napierala 1104ec125fbbSEdward Tomasz Napierala static int 1105ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 1106ec125fbbSEdward Tomasz Napierala { 1107ec125fbbSEdward Tomasz Napierala 11084b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11094b5c9cf6SEdward Tomasz Napierala 1110ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1111ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1112ec125fbbSEdward Tomasz Napierala return (0); 1113ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1114ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1115ec125fbbSEdward Tomasz Napierala return (0); 1116ec125fbbSEdward Tomasz Napierala break; 1117ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1118ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1119ec125fbbSEdward Tomasz Napierala return (0); 1120ec125fbbSEdward Tomasz Napierala break; 1121ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1122415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1123ec125fbbSEdward Tomasz Napierala return (0); 1124ec125fbbSEdward Tomasz Napierala break; 1125ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1126a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1127ec125fbbSEdward Tomasz Napierala return (0); 1128ec125fbbSEdward Tomasz Napierala break; 1129ec125fbbSEdward Tomasz Napierala default: 1130ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 1131ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1132ec125fbbSEdward Tomasz Napierala } 1133ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 1134ec125fbbSEdward Tomasz Napierala return (0); 1135ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 1136ec125fbbSEdward Tomasz Napierala return (0); 1137ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 1138ec125fbbSEdward Tomasz Napierala return (0); 1139ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 1140ec125fbbSEdward Tomasz Napierala return (0); 1141ec125fbbSEdward Tomasz Napierala 1142ec125fbbSEdward Tomasz Napierala return (1); 1143ec125fbbSEdward Tomasz Napierala } 1144ec125fbbSEdward Tomasz Napierala 1145ec125fbbSEdward Tomasz Napierala static int 1146ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 1147ec125fbbSEdward Tomasz Napierala { 1148c1a43e73SEdward Tomasz Napierala struct rctl_rule *rule; 1149ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 1150ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 1151ec125fbbSEdward Tomasz Napierala id_t id; 1152c1a43e73SEdward Tomasz Napierala int error = 0; 1153ec125fbbSEdward Tomasz Napierala 11544b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 11554b5c9cf6SEdward Tomasz Napierala 1156ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 1157ec125fbbSEdward Tomasz Napierala 1158ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 1159ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 1160ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 1161ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 1162ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 1163ec125fbbSEdward Tomasz Napierala perstr = rulestr; 1164ec125fbbSEdward Tomasz Napierala 1165ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 1166ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 1167ec125fbbSEdward Tomasz Napierala else { 1168ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 1169ec125fbbSEdward Tomasz Napierala if (error != 0) 1170ec125fbbSEdward Tomasz Napierala goto out; 1171ec125fbbSEdward Tomasz Napierala } 1172ec125fbbSEdward Tomasz Napierala 1173ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 1174ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 1175ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 1176415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 1177a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 1178ec125fbbSEdward Tomasz Napierala } else { 1179ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1180ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 1181ec125fbbSEdward Tomasz Napierala error = EINVAL; 1182ec125fbbSEdward Tomasz Napierala goto out; 1183ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1184ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1185ec125fbbSEdward Tomasz Napierala if (error != 0) 1186ec125fbbSEdward Tomasz Napierala goto out; 1187ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1188ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 1189ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 1190ec125fbbSEdward Tomasz Napierala error = ESRCH; 1191ec125fbbSEdward Tomasz Napierala goto out; 1192ec125fbbSEdward Tomasz Napierala } 1193ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 1194ec125fbbSEdward Tomasz Napierala break; 1195ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1196ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 1197ec125fbbSEdward Tomasz Napierala if (error != 0) 1198ec125fbbSEdward Tomasz Napierala goto out; 1199ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 1200ec125fbbSEdward Tomasz Napierala break; 1201ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1202415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 1203ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 1204415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 1205ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 1206ec125fbbSEdward Tomasz Napierala goto out; 1207ec125fbbSEdward Tomasz Napierala } 1208ec125fbbSEdward Tomasz Napierala break; 1209ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1210a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 1211a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 1212a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 1213a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 1214ec125fbbSEdward Tomasz Napierala goto out; 1215ec125fbbSEdward Tomasz Napierala } 1216ec125fbbSEdward Tomasz Napierala break; 1217ec125fbbSEdward Tomasz Napierala default: 1218ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 1219ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1220ec125fbbSEdward Tomasz Napierala } 1221ec125fbbSEdward Tomasz Napierala } 1222ec125fbbSEdward Tomasz Napierala 1223ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1224ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1225ec125fbbSEdward Tomasz Napierala else { 1226ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1227ec125fbbSEdward Tomasz Napierala resourcenames); 1228ec125fbbSEdward Tomasz Napierala if (error != 0) 1229ec125fbbSEdward Tomasz Napierala goto out; 1230ec125fbbSEdward Tomasz Napierala } 1231ec125fbbSEdward Tomasz Napierala 1232ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1233ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1234ec125fbbSEdward Tomasz Napierala else { 1235ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1236ec125fbbSEdward Tomasz Napierala if (error != 0) 1237ec125fbbSEdward Tomasz Napierala goto out; 1238ec125fbbSEdward Tomasz Napierala } 1239ec125fbbSEdward Tomasz Napierala 1240ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1241ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1242ec125fbbSEdward Tomasz Napierala else { 1243ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1244ec125fbbSEdward Tomasz Napierala if (error != 0) 1245ec125fbbSEdward Tomasz Napierala goto out; 1246b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1247b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1248b450d447SEdward Tomasz Napierala error = ERANGE; 1249b450d447SEdward Tomasz Napierala goto out; 1250b450d447SEdward Tomasz Napierala } 1251cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1252ec125fbbSEdward Tomasz Napierala } 1253b450d447SEdward Tomasz Napierala } 1254ec125fbbSEdward Tomasz Napierala 1255ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1256ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1257ec125fbbSEdward Tomasz Napierala else { 1258ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1259ec125fbbSEdward Tomasz Napierala if (error != 0) 1260ec125fbbSEdward Tomasz Napierala goto out; 1261ec125fbbSEdward Tomasz Napierala } 1262ec125fbbSEdward Tomasz Napierala 1263ec125fbbSEdward Tomasz Napierala out: 1264ec125fbbSEdward Tomasz Napierala if (error == 0) 1265ec125fbbSEdward Tomasz Napierala *rulep = rule; 1266ec125fbbSEdward Tomasz Napierala else 1267ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1268ec125fbbSEdward Tomasz Napierala 1269ec125fbbSEdward Tomasz Napierala return (error); 1270ec125fbbSEdward Tomasz Napierala } 1271ec125fbbSEdward Tomasz Napierala 1272ec125fbbSEdward Tomasz Napierala /* 1273ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1274ec125fbbSEdward Tomasz Napierala */ 1275ec125fbbSEdward Tomasz Napierala int 1276ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1277ec125fbbSEdward Tomasz Napierala { 1278ec125fbbSEdward Tomasz Napierala struct proc *p; 1279ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1280ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1281ec125fbbSEdward Tomasz Napierala struct prison *pr; 1282a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1283ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1284ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1285ec125fbbSEdward Tomasz Napierala int match; 1286ec125fbbSEdward Tomasz Napierala 12874b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1288ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1289ec125fbbSEdward Tomasz Napierala 1290ec125fbbSEdward Tomasz Napierala /* 1291ae34b6ffSEdward Tomasz Napierala * Some rules just don't make sense, like "deny" rule for an undeniable 1292ae34b6ffSEdward Tomasz Napierala * resource. The exception are the RSS and %CPU resources - they are 1293ae34b6ffSEdward Tomasz Napierala * not deniable in the racct sense, but the limit is enforced in 1294ae34b6ffSEdward Tomasz Napierala * a different way. 1295ec125fbbSEdward Tomasz Napierala */ 1296ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1297ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DENIABLE(rule->rr_resource) && 1298ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_RSS && 1299ae34b6ffSEdward Tomasz Napierala rule->rr_resource != RACCT_PCTCPU) { 1300ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1301ae34b6ffSEdward Tomasz Napierala } 1302ae34b6ffSEdward Tomasz Napierala 1303ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1304ae34b6ffSEdward Tomasz Napierala !RACCT_IS_DECAYING(rule->rr_resource)) { 1305ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1306ae34b6ffSEdward Tomasz Napierala } 1307ae34b6ffSEdward Tomasz Napierala 1308ae34b6ffSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_THROTTLE && 1309ae34b6ffSEdward Tomasz Napierala rule->rr_resource == RACCT_PCTCPU) { 1310ae34b6ffSEdward Tomasz Napierala return (EOPNOTSUPP); 1311ae34b6ffSEdward Tomasz Napierala } 1312ec125fbbSEdward Tomasz Napierala 1313ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 1314ae34b6ffSEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) { 1315ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1316ae34b6ffSEdward Tomasz Napierala } 1317ec125fbbSEdward Tomasz Napierala 1318ec125fbbSEdward Tomasz Napierala /* 1319ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1320ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1321ec125fbbSEdward Tomasz Napierala */ 1322ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1323ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1324ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1325ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1326ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1327ec125fbbSEdward Tomasz Napierala } else 1328ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1329ec125fbbSEdward Tomasz Napierala 1330ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1331ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1332ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1333ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1334ec125fbbSEdward Tomasz Napierala 1335ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1336ec125fbbSEdward Tomasz Napierala /* 1337ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1338ec125fbbSEdward Tomasz Napierala * to do. 1339ec125fbbSEdward Tomasz Napierala */ 1340ec125fbbSEdward Tomasz Napierala return (0); 1341ec125fbbSEdward Tomasz Napierala 1342ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1343ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1344ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1345ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1346ec125fbbSEdward Tomasz Napierala break; 1347ec125fbbSEdward Tomasz Napierala 1348ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1349415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1350ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1351ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1352ec125fbbSEdward Tomasz Napierala break; 1353ec125fbbSEdward Tomasz Napierala 1354ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1355a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1356a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1357a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1358ec125fbbSEdward Tomasz Napierala break; 1359ec125fbbSEdward Tomasz Napierala 1360ec125fbbSEdward Tomasz Napierala default: 1361ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1362ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1363ec125fbbSEdward Tomasz Napierala } 1364ec125fbbSEdward Tomasz Napierala 1365ec125fbbSEdward Tomasz Napierala /* 1366ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1367ec125fbbSEdward Tomasz Napierala * it applies to. 1368ec125fbbSEdward Tomasz Napierala */ 1369ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1370ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1371ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1372ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1373ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1374ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1375ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1376ec125fbbSEdward Tomasz Napierala break; 1377ec125fbbSEdward Tomasz Napierala continue; 1378ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1379415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1380ec125fbbSEdward Tomasz Napierala break; 1381ec125fbbSEdward Tomasz Napierala continue; 1382ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1383ec125fbbSEdward Tomasz Napierala match = 0; 1384ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1385a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1386ec125fbbSEdward Tomasz Napierala match = 1; 1387ec125fbbSEdward Tomasz Napierala break; 1388ec125fbbSEdward Tomasz Napierala } 1389ec125fbbSEdward Tomasz Napierala } 1390ec125fbbSEdward Tomasz Napierala if (match) 1391ec125fbbSEdward Tomasz Napierala break; 1392ec125fbbSEdward Tomasz Napierala continue; 1393ec125fbbSEdward Tomasz Napierala default: 1394ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1395ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1396ec125fbbSEdward Tomasz Napierala } 1397ec125fbbSEdward Tomasz Napierala 1398ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1399ec125fbbSEdward Tomasz Napierala } 1400ec125fbbSEdward Tomasz Napierala 1401ec125fbbSEdward Tomasz Napierala return (0); 1402ec125fbbSEdward Tomasz Napierala } 1403ec125fbbSEdward Tomasz Napierala 1404ec125fbbSEdward Tomasz Napierala static void 140515db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 140615db3c07SEdward Tomasz Napierala { 140715db3c07SEdward Tomasz Napierala 1408bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 140915db3c07SEdward Tomasz Napierala } 141015db3c07SEdward Tomasz Napierala 141115db3c07SEdward Tomasz Napierala static void 141215db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 141315db3c07SEdward Tomasz Napierala { 141415db3c07SEdward Tomasz Napierala 1415bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 141615db3c07SEdward Tomasz Napierala } 141715db3c07SEdward Tomasz Napierala 141815db3c07SEdward Tomasz Napierala static void 1419ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1420ec125fbbSEdward Tomasz Napierala { 1421ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1422ec125fbbSEdward Tomasz Napierala int found = 0; 1423ec125fbbSEdward Tomasz Napierala 14244b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1425bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 14264b5c9cf6SEdward Tomasz Napierala 1427ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1428ec125fbbSEdward Tomasz Napierala 1429ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1430ec125fbbSEdward Tomasz Napierala } 1431ec125fbbSEdward Tomasz Napierala 1432ec125fbbSEdward Tomasz Napierala /* 1433ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1434ec125fbbSEdward Tomasz Napierala */ 1435ec125fbbSEdward Tomasz Napierala int 1436ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1437ec125fbbSEdward Tomasz Napierala { 1438ec125fbbSEdward Tomasz Napierala struct proc *p; 1439c1a43e73SEdward Tomasz Napierala int found = 0; 1440ec125fbbSEdward Tomasz Napierala 14414b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14424b5c9cf6SEdward Tomasz Napierala 1443ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1444ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1445ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1446bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1447ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1448bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1449ec125fbbSEdward Tomasz Napierala if (found) 1450ec125fbbSEdward Tomasz Napierala return (0); 1451ec125fbbSEdward Tomasz Napierala return (ESRCH); 1452ec125fbbSEdward Tomasz Napierala } 1453ec125fbbSEdward Tomasz Napierala 145415db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, 145515db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 145615db3c07SEdward Tomasz Napierala filter, (void *)&found); 145715db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, 145815db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 145915db3c07SEdward Tomasz Napierala filter, (void *)&found); 146015db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 146115db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 146215db3c07SEdward Tomasz Napierala filter, (void *)&found); 1463ec125fbbSEdward Tomasz Napierala 1464ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1465bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1466ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1467ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1468ec125fbbSEdward Tomasz Napierala } 1469bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1470ec125fbbSEdward Tomasz Napierala 1471ec125fbbSEdward Tomasz Napierala if (found) 1472ec125fbbSEdward Tomasz Napierala return (0); 1473ec125fbbSEdward Tomasz Napierala return (ESRCH); 1474ec125fbbSEdward Tomasz Napierala } 1475ec125fbbSEdward Tomasz Napierala 1476ec125fbbSEdward Tomasz Napierala /* 1477ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1478ec125fbbSEdward Tomasz Napierala */ 1479ec125fbbSEdward Tomasz Napierala static void 1480ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1481ec125fbbSEdward Tomasz Napierala { 1482ec125fbbSEdward Tomasz Napierala int64_t amount; 1483ec125fbbSEdward Tomasz Napierala 14844b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 14854b5c9cf6SEdward Tomasz Napierala 1486ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1487ec125fbbSEdward Tomasz Napierala 1488ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1489ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1490ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1491ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1492ec125fbbSEdward Tomasz Napierala else 1493ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1494ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1495ec125fbbSEdward Tomasz Napierala break; 1496ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1497ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1498ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1499ec125fbbSEdward Tomasz Napierala else 1500ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1501ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1502ec125fbbSEdward Tomasz Napierala break; 1503ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1504415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1505ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1506ec125fbbSEdward Tomasz Napierala else 1507ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1508415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1509ec125fbbSEdward Tomasz Napierala break; 1510ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1511a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1512ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1513ec125fbbSEdward Tomasz Napierala else 1514ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1515a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1516ec125fbbSEdward Tomasz Napierala break; 1517ec125fbbSEdward Tomasz Napierala default: 1518ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1519ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1520ec125fbbSEdward Tomasz Napierala } 1521ec125fbbSEdward Tomasz Napierala 1522ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1523ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 152485a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 152585a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1526ec125fbbSEdward Tomasz Napierala 1527ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1528ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1529ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1530ec125fbbSEdward Tomasz Napierala amount); 1531ec125fbbSEdward Tomasz Napierala 1532ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1533ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1534ec125fbbSEdward Tomasz Napierala } 1535ec125fbbSEdward Tomasz Napierala 1536ec125fbbSEdward Tomasz Napierala /* 1537ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1538ec125fbbSEdward Tomasz Napierala */ 1539ec125fbbSEdward Tomasz Napierala static int 1540ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1541ec125fbbSEdward Tomasz Napierala { 1542ec125fbbSEdward Tomasz Napierala char *str; 1543c1a43e73SEdward Tomasz Napierala int error; 1544ec125fbbSEdward Tomasz Napierala 15454b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15464b5c9cf6SEdward Tomasz Napierala 1547ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1548ec125fbbSEdward Tomasz Napierala return (EINVAL); 1549ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1550786813aaSEdward Tomasz Napierala return (E2BIG); 1551ec125fbbSEdward Tomasz Napierala 1552ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1553ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1554ec125fbbSEdward Tomasz Napierala if (error != 0) { 1555ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1556ec125fbbSEdward Tomasz Napierala return (error); 1557ec125fbbSEdward Tomasz Napierala } 1558ec125fbbSEdward Tomasz Napierala 1559ec125fbbSEdward Tomasz Napierala *inputstr = str; 1560ec125fbbSEdward Tomasz Napierala 1561ec125fbbSEdward Tomasz Napierala return (0); 1562ec125fbbSEdward Tomasz Napierala } 1563ec125fbbSEdward Tomasz Napierala 1564ec125fbbSEdward Tomasz Napierala /* 1565ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1566ec125fbbSEdward Tomasz Napierala */ 1567ec125fbbSEdward Tomasz Napierala static int 1568ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1569ec125fbbSEdward Tomasz Napierala { 1570ec125fbbSEdward Tomasz Napierala int error; 1571ec125fbbSEdward Tomasz Napierala 15724b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15734b5c9cf6SEdward Tomasz Napierala 1574ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1575ec125fbbSEdward Tomasz Napierala return (0); 1576ec125fbbSEdward Tomasz Napierala 1577ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1578ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1579ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1580ec125fbbSEdward Tomasz Napierala return (ERANGE); 1581ec125fbbSEdward Tomasz Napierala } 1582ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1583ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1584ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1585ec125fbbSEdward Tomasz Napierala return (error); 1586ec125fbbSEdward Tomasz Napierala } 1587ec125fbbSEdward Tomasz Napierala 1588ec125fbbSEdward Tomasz Napierala static struct sbuf * 1589ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1590ec125fbbSEdward Tomasz Napierala { 1591ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1592c1a43e73SEdward Tomasz Napierala int64_t amount; 1593c1a43e73SEdward Tomasz Napierala int i; 1594ec125fbbSEdward Tomasz Napierala 15954b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 15964b5c9cf6SEdward Tomasz Napierala 1597ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1598ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 15994fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1600ec125fbbSEdward Tomasz Napierala continue; 1601bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1602ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 1603bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 160485a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1605cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1606ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1607ec125fbbSEdward Tomasz Napierala } 1608ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1609ec125fbbSEdward Tomasz Napierala return (sb); 1610ec125fbbSEdward Tomasz Napierala } 1611ec125fbbSEdward Tomasz Napierala 1612ec125fbbSEdward Tomasz Napierala int 16138451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1614ec125fbbSEdward Tomasz Napierala { 1615ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1616ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1617ec125fbbSEdward Tomasz Napierala struct proc *p; 1618ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1619ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1620a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1621c1a43e73SEdward Tomasz Napierala char *inputstr; 1622c1a43e73SEdward Tomasz Napierala int error; 1623ec125fbbSEdward Tomasz Napierala 16244b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16254b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16264b5c9cf6SEdward Tomasz Napierala 1627415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1628ec125fbbSEdward Tomasz Napierala if (error != 0) 1629ec125fbbSEdward Tomasz Napierala return (error); 1630ec125fbbSEdward Tomasz Napierala 1631ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1632ec125fbbSEdward Tomasz Napierala if (error != 0) 1633ec125fbbSEdward Tomasz Napierala return (error); 1634ec125fbbSEdward Tomasz Napierala 1635ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1636ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1637ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1638ec125fbbSEdward Tomasz Napierala if (error != 0) { 1639ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1640ec125fbbSEdward Tomasz Napierala return (error); 1641ec125fbbSEdward Tomasz Napierala } 1642ec125fbbSEdward Tomasz Napierala 1643ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1644ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1645ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1646ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1647ec125fbbSEdward Tomasz Napierala error = EINVAL; 1648ec125fbbSEdward Tomasz Napierala goto out; 1649ec125fbbSEdward Tomasz Napierala } 1650ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1651ec125fbbSEdward Tomasz Napierala break; 1652ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1653ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1654ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1655ec125fbbSEdward Tomasz Napierala error = EINVAL; 1656ec125fbbSEdward Tomasz Napierala goto out; 1657ec125fbbSEdward Tomasz Napierala } 1658ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1659ec125fbbSEdward Tomasz Napierala break; 1660ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1661415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1662ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1663ec125fbbSEdward Tomasz Napierala error = EINVAL; 1664ec125fbbSEdward Tomasz Napierala goto out; 1665ec125fbbSEdward Tomasz Napierala } 1666ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1667ec125fbbSEdward Tomasz Napierala break; 1668ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1669a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1670a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1671ec125fbbSEdward Tomasz Napierala error = EINVAL; 1672ec125fbbSEdward Tomasz Napierala goto out; 1673ec125fbbSEdward Tomasz Napierala } 1674a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1675ec125fbbSEdward Tomasz Napierala break; 1676ec125fbbSEdward Tomasz Napierala default: 1677ec125fbbSEdward Tomasz Napierala error = EINVAL; 1678ec125fbbSEdward Tomasz Napierala } 1679ec125fbbSEdward Tomasz Napierala out: 1680ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1681ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1682ec125fbbSEdward Tomasz Napierala if (error != 0) 1683ec125fbbSEdward Tomasz Napierala return (error); 1684ec125fbbSEdward Tomasz Napierala 1685ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1686ec125fbbSEdward Tomasz Napierala 1687ec125fbbSEdward Tomasz Napierala return (error); 1688ec125fbbSEdward Tomasz Napierala } 1689ec125fbbSEdward Tomasz Napierala 1690ec125fbbSEdward Tomasz Napierala static void 1691ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1692ec125fbbSEdward Tomasz Napierala { 1693ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1694ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1695ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1696ec125fbbSEdward Tomasz Napierala 16974b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1698bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 16994b5c9cf6SEdward Tomasz Napierala 1700ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1701ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1702ec125fbbSEdward Tomasz Napierala continue; 1703ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1704ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1705ec125fbbSEdward Tomasz Napierala } 1706ec125fbbSEdward Tomasz Napierala } 1707ec125fbbSEdward Tomasz Napierala 1708ec125fbbSEdward Tomasz Napierala int 17098451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1710ec125fbbSEdward Tomasz Napierala { 1711ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1712ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1713ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1714ec125fbbSEdward Tomasz Napierala struct proc *p; 1715c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1716c1a43e73SEdward Tomasz Napierala size_t bufsize; 1717c1a43e73SEdward Tomasz Napierala int error; 1718ec125fbbSEdward Tomasz Napierala 17194b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17204b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17214b5c9cf6SEdward Tomasz Napierala 1722ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1723ec125fbbSEdward Tomasz Napierala if (error != 0) 1724ec125fbbSEdward Tomasz Napierala return (error); 1725ec125fbbSEdward Tomasz Napierala 1726ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1727ec125fbbSEdward Tomasz Napierala if (error != 0) 1728ec125fbbSEdward Tomasz Napierala return (error); 1729ec125fbbSEdward Tomasz Napierala 1730ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1731ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1732ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1733ec125fbbSEdward Tomasz Napierala if (error != 0) { 1734ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1735ec125fbbSEdward Tomasz Napierala return (error); 1736ec125fbbSEdward Tomasz Napierala } 1737ec125fbbSEdward Tomasz Napierala 17382b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 17392b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 17402b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 17412b4035eeSEdward Tomasz Napierala return (E2BIG); 17422b4035eeSEdward Tomasz Napierala } 17432b4035eeSEdward Tomasz Napierala 1744ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1745ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1746ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1747ec125fbbSEdward Tomasz Napierala 1748ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1749bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1750ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1751ec125fbbSEdward Tomasz Napierala /* 1752ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1753ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1754ec125fbbSEdward Tomasz Napierala */ 1755ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1756ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1757ec125fbbSEdward Tomasz Napierala continue; 1758ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1759ec125fbbSEdward Tomasz Napierala continue; 1760ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1761ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1762ec125fbbSEdward Tomasz Napierala } 1763bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1764ec125fbbSEdward Tomasz Napierala } 1765ec125fbbSEdward Tomasz Napierala 176615db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, 176715db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 176815db3c07SEdward Tomasz Napierala filter, sb); 176915db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, 177015db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 177115db3c07SEdward Tomasz Napierala filter, sb); 177215db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 177315db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 177415db3c07SEdward Tomasz Napierala filter, sb); 1775ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 17762b4035eeSEdward Tomasz Napierala error = ERANGE; 17772b4035eeSEdward Tomasz Napierala goto out; 1778ec125fbbSEdward Tomasz Napierala } 1779ec125fbbSEdward Tomasz Napierala 1780ec125fbbSEdward Tomasz Napierala /* 1781ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1782ec125fbbSEdward Tomasz Napierala */ 1783ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1784ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1785ec125fbbSEdward Tomasz Napierala 1786ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 17872b4035eeSEdward Tomasz Napierala out: 1788ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1789ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1790ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1791ec125fbbSEdward Tomasz Napierala return (error); 1792ec125fbbSEdward Tomasz Napierala } 1793ec125fbbSEdward Tomasz Napierala 1794ec125fbbSEdward Tomasz Napierala int 17958451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1796ec125fbbSEdward Tomasz Napierala { 1797ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1798ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1799ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1800c1a43e73SEdward Tomasz Napierala char *inputstr, *buf; 1801c1a43e73SEdward Tomasz Napierala size_t bufsize; 1802c1a43e73SEdward Tomasz Napierala int error; 1803ec125fbbSEdward Tomasz Napierala 18044b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18054b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18064b5c9cf6SEdward Tomasz Napierala 1807ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1808ec125fbbSEdward Tomasz Napierala if (error != 0) 1809ec125fbbSEdward Tomasz Napierala return (error); 1810ec125fbbSEdward Tomasz Napierala 1811ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1812ec125fbbSEdward Tomasz Napierala if (error != 0) 1813ec125fbbSEdward Tomasz Napierala return (error); 1814ec125fbbSEdward Tomasz Napierala 1815ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1816ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1817ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1818ec125fbbSEdward Tomasz Napierala if (error != 0) { 1819ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1820ec125fbbSEdward Tomasz Napierala return (error); 1821ec125fbbSEdward Tomasz Napierala } 1822ec125fbbSEdward Tomasz Napierala 1823ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1824ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1825ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1826ec125fbbSEdward Tomasz Napierala return (EINVAL); 1827ec125fbbSEdward Tomasz Napierala } 1828ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1829ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1830ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1831ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1832ec125fbbSEdward Tomasz Napierala } 1833ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1834ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1835ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1836ec125fbbSEdward Tomasz Napierala return (EINVAL); 1837ec125fbbSEdward Tomasz Napierala } 1838ec125fbbSEdward Tomasz Napierala 18392b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 18402b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 18412b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 18422b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 18432b4035eeSEdward Tomasz Napierala return (E2BIG); 18442b4035eeSEdward Tomasz Napierala } 18452b4035eeSEdward Tomasz Napierala 1846ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1847ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1848ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1849ec125fbbSEdward Tomasz Napierala 1850bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1851ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1852ec125fbbSEdward Tomasz Napierala rrl_next) { 1853ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1854ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1855ec125fbbSEdward Tomasz Napierala } 1856bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1857ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 18582b4035eeSEdward Tomasz Napierala error = ERANGE; 1859b483e111SConrad Meyer sbuf_delete(sb); 18602b4035eeSEdward Tomasz Napierala goto out; 1861ec125fbbSEdward Tomasz Napierala } 1862ec125fbbSEdward Tomasz Napierala 1863ec125fbbSEdward Tomasz Napierala /* 1864ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1865ec125fbbSEdward Tomasz Napierala */ 1866ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1867ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1868ec125fbbSEdward Tomasz Napierala 1869ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 18702b4035eeSEdward Tomasz Napierala out: 1871ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1872ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1873ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1874ec125fbbSEdward Tomasz Napierala return (error); 1875ec125fbbSEdward Tomasz Napierala } 1876ec125fbbSEdward Tomasz Napierala 1877ec125fbbSEdward Tomasz Napierala int 18788451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1879ec125fbbSEdward Tomasz Napierala { 1880ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1881ec125fbbSEdward Tomasz Napierala char *inputstr; 1882c1a43e73SEdward Tomasz Napierala int error; 1883ec125fbbSEdward Tomasz Napierala 18844b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 18854b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 18864b5c9cf6SEdward Tomasz Napierala 1887ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1888ec125fbbSEdward Tomasz Napierala if (error != 0) 1889ec125fbbSEdward Tomasz Napierala return (error); 1890ec125fbbSEdward Tomasz Napierala 1891ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1892ec125fbbSEdward Tomasz Napierala if (error != 0) 1893ec125fbbSEdward Tomasz Napierala return (error); 1894ec125fbbSEdward Tomasz Napierala 1895ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1896ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1897ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1898ec125fbbSEdward Tomasz Napierala if (error != 0) { 1899ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1900ec125fbbSEdward Tomasz Napierala return (error); 1901ec125fbbSEdward Tomasz Napierala } 1902ec125fbbSEdward Tomasz Napierala /* 1903ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1904ec125fbbSEdward Tomasz Napierala */ 1905ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1906ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1907ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1908ec125fbbSEdward Tomasz Napierala 1909ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1910ec125fbbSEdward Tomasz Napierala error = EINVAL; 1911ec125fbbSEdward Tomasz Napierala goto out; 1912ec125fbbSEdward Tomasz Napierala } 1913ec125fbbSEdward Tomasz Napierala 1914ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1915ec125fbbSEdward Tomasz Napierala 1916ec125fbbSEdward Tomasz Napierala out: 1917ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1918ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1919ec125fbbSEdward Tomasz Napierala return (error); 1920ec125fbbSEdward Tomasz Napierala } 1921ec125fbbSEdward Tomasz Napierala 1922ec125fbbSEdward Tomasz Napierala int 19238451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1924ec125fbbSEdward Tomasz Napierala { 1925ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1926ec125fbbSEdward Tomasz Napierala char *inputstr; 1927c1a43e73SEdward Tomasz Napierala int error; 1928ec125fbbSEdward Tomasz Napierala 19294b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19304b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 19314b5c9cf6SEdward Tomasz Napierala 1932ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1933ec125fbbSEdward Tomasz Napierala if (error != 0) 1934ec125fbbSEdward Tomasz Napierala return (error); 1935ec125fbbSEdward Tomasz Napierala 1936ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1937ec125fbbSEdward Tomasz Napierala if (error != 0) 1938ec125fbbSEdward Tomasz Napierala return (error); 1939ec125fbbSEdward Tomasz Napierala 1940ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1941ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1942ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1943ec125fbbSEdward Tomasz Napierala if (error != 0) { 1944ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1945ec125fbbSEdward Tomasz Napierala return (error); 1946ec125fbbSEdward Tomasz Napierala } 1947ec125fbbSEdward Tomasz Napierala 1948ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1949ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1950ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1951ec125fbbSEdward Tomasz Napierala 1952ec125fbbSEdward Tomasz Napierala return (error); 1953ec125fbbSEdward Tomasz Napierala } 1954ec125fbbSEdward Tomasz Napierala 1955ec125fbbSEdward Tomasz Napierala /* 1956ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1957ec125fbbSEdward Tomasz Napierala */ 1958ec125fbbSEdward Tomasz Napierala void 1959ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1960ec125fbbSEdward Tomasz Napierala { 1961c1a43e73SEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1962ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1963ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1964ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1965a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1966c1a43e73SEdward Tomasz Napierala int rulecnt, i; 1967ec125fbbSEdward Tomasz Napierala 1968f87beb93SAndriy Gapon if (!racct_enable) 1969f87beb93SAndriy Gapon return; 1970f87beb93SAndriy Gapon 1971f87beb93SAndriy Gapon PROC_LOCK_ASSERT(p, MA_NOTOWNED); 19724b5c9cf6SEdward Tomasz Napierala 1973ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1974ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1975a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1976ec125fbbSEdward Tomasz Napierala 1977ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1978ec125fbbSEdward Tomasz Napierala 1979ec125fbbSEdward Tomasz Napierala again: 1980ec125fbbSEdward Tomasz Napierala /* 1981ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1982ec125fbbSEdward Tomasz Napierala * credentials. 1983ec125fbbSEdward Tomasz Napierala */ 1984ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1985bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 1986ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1987ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1988ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1989ec125fbbSEdward Tomasz Napierala rulecnt++; 1990ec125fbbSEdward Tomasz Napierala } 1991ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1992ec125fbbSEdward Tomasz Napierala rulecnt++; 1993ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1994ec125fbbSEdward Tomasz Napierala rulecnt++; 1995a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1996ec125fbbSEdward Tomasz Napierala rulecnt++; 1997bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 1998ec125fbbSEdward Tomasz Napierala 1999ec125fbbSEdward Tomasz Napierala /* 2000ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 2001ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 2002ec125fbbSEdward Tomasz Napierala */ 2003ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 2004ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 2005ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 2006ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 2007ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 2008ec125fbbSEdward Tomasz Napierala } 2009ec125fbbSEdward Tomasz Napierala 2010ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2011ec125fbbSEdward Tomasz Napierala 2012ec125fbbSEdward Tomasz Napierala /* 2013ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 2014ec125fbbSEdward Tomasz Napierala */ 2015bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK(); 2016ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 2017ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2018ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2019ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2020ec125fbbSEdward Tomasz Napierala goto goaround; 2021ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2022ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2023ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2024ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2025ec125fbbSEdward Tomasz Napierala rulecnt--; 2026ec125fbbSEdward Tomasz Napierala } 2027ec125fbbSEdward Tomasz Napierala } 2028ec125fbbSEdward Tomasz Napierala 2029ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 2030ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2031ec125fbbSEdward Tomasz Napierala goto goaround; 2032ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2033ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2034ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2035ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2036ec125fbbSEdward Tomasz Napierala rulecnt--; 2037ec125fbbSEdward Tomasz Napierala } 2038ec125fbbSEdward Tomasz Napierala 2039ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 2040ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2041ec125fbbSEdward Tomasz Napierala goto goaround; 2042ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2043ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2044ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2045ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2046ec125fbbSEdward Tomasz Napierala rulecnt--; 2047ec125fbbSEdward Tomasz Napierala } 2048ec125fbbSEdward Tomasz Napierala 2049a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 2050ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 2051ec125fbbSEdward Tomasz Napierala goto goaround; 2052ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 2053ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 2054ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 2055ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 2056ec125fbbSEdward Tomasz Napierala rulecnt--; 2057ec125fbbSEdward Tomasz Napierala } 2058ec125fbbSEdward Tomasz Napierala 2059ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 2060ec125fbbSEdward Tomasz Napierala /* 2061ec125fbbSEdward Tomasz Napierala * Free the old rule list. 2062ec125fbbSEdward Tomasz Napierala */ 2063ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 2064ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 2065ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2066ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2067ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2068ec125fbbSEdward Tomasz Napierala } 2069ec125fbbSEdward Tomasz Napierala 2070ec125fbbSEdward Tomasz Napierala /* 2071ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 2072ec125fbbSEdward Tomasz Napierala * 2073ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 2074ec125fbbSEdward Tomasz Napierala * of iterating here? 2075ec125fbbSEdward Tomasz Napierala */ 2076ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2077ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2078ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2079ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 2080ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 2081ec125fbbSEdward Tomasz Napierala } 2082ec125fbbSEdward Tomasz Napierala 2083bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2084ec125fbbSEdward Tomasz Napierala 2085ec125fbbSEdward Tomasz Napierala return; 2086ec125fbbSEdward Tomasz Napierala } 2087ec125fbbSEdward Tomasz Napierala 2088ec125fbbSEdward Tomasz Napierala goaround: 2089bbe4eb6dSEdward Tomasz Napierala RACCT_UNLOCK(); 2090ec125fbbSEdward Tomasz Napierala 2091ec125fbbSEdward Tomasz Napierala /* 2092ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 2093ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 2094ec125fbbSEdward Tomasz Napierala */ 2095ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 2096ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 2097ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 2098ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 2099ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 2100ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 2101ec125fbbSEdward Tomasz Napierala } 2102ec125fbbSEdward Tomasz Napierala 2103ec125fbbSEdward Tomasz Napierala goto again; 2104ec125fbbSEdward Tomasz Napierala } 2105ec125fbbSEdward Tomasz Napierala 2106ec125fbbSEdward Tomasz Napierala /* 2107ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 2108ec125fbbSEdward Tomasz Napierala */ 2109ec125fbbSEdward Tomasz Napierala int 2110ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 2111ec125fbbSEdward Tomasz Napierala { 2112ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 2113c1a43e73SEdward Tomasz Napierala struct rctl_rule_link *link; 2114c1a43e73SEdward Tomasz Napierala int error; 2115ec125fbbSEdward Tomasz Napierala 21164b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2117bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21180b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 2119ec125fbbSEdward Tomasz Napierala 2120bbe4eb6dSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 2121ec125fbbSEdward Tomasz Napierala 2122ec125fbbSEdward Tomasz Napierala /* 2123ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 2124ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 2125ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 2126ec125fbbSEdward Tomasz Napierala */ 2127ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 2128ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 2129ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 2130ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 2131ec125fbbSEdward Tomasz Napierala if (rule == NULL) 2132ec125fbbSEdward Tomasz Napierala goto fail; 2133ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 2134ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 2135ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 2136ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2137ec125fbbSEdward Tomasz Napierala rule); 2138ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 2139ec125fbbSEdward Tomasz Napierala if (error != 0) 2140ec125fbbSEdward Tomasz Napierala goto fail; 2141ec125fbbSEdward Tomasz Napierala } else { 2142ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 2143ec125fbbSEdward Tomasz Napierala link->rrl_rule); 2144ec125fbbSEdward Tomasz Napierala if (error != 0) 2145ec125fbbSEdward Tomasz Napierala goto fail; 2146ec125fbbSEdward Tomasz Napierala } 2147ec125fbbSEdward Tomasz Napierala } 2148ec125fbbSEdward Tomasz Napierala 2149ec125fbbSEdward Tomasz Napierala return (0); 2150ec125fbbSEdward Tomasz Napierala 2151ec125fbbSEdward Tomasz Napierala fail: 2152ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 2153ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 2154ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2155ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2156ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2157ec125fbbSEdward Tomasz Napierala } 2158bbe4eb6dSEdward Tomasz Napierala 2159ec125fbbSEdward Tomasz Napierala return (EAGAIN); 2160ec125fbbSEdward Tomasz Napierala } 2161ec125fbbSEdward Tomasz Napierala 2162ec125fbbSEdward Tomasz Napierala /* 2163ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 2164ec125fbbSEdward Tomasz Napierala */ 2165ec125fbbSEdward Tomasz Napierala void 2166ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 2167ec125fbbSEdward Tomasz Napierala { 2168ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 2169ec125fbbSEdward Tomasz Napierala 21704b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2171bbe4eb6dSEdward Tomasz Napierala RACCT_LOCK_ASSERT(); 21724b5c9cf6SEdward Tomasz Napierala 2173ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 2174ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 2175ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 2176ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 2177ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 2178ec125fbbSEdward Tomasz Napierala } 2179ec125fbbSEdward Tomasz Napierala } 2180ec125fbbSEdward Tomasz Napierala 2181ec125fbbSEdward Tomasz Napierala static void 2182ec125fbbSEdward Tomasz Napierala rctl_init(void) 2183ec125fbbSEdward Tomasz Napierala { 2184ec125fbbSEdward Tomasz Napierala 21854b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 21864b5c9cf6SEdward Tomasz Napierala return; 21874b5c9cf6SEdward Tomasz Napierala 2188c1a43e73SEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 218923e6fff2SEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 2190ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 2191ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 219223e6fff2SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2193ae34b6ffSEdward Tomasz Napierala 21948bd8c8f1SEdward Tomasz Napierala /* 21958bd8c8f1SEdward Tomasz Napierala * Set default values, making sure not to overwrite the ones 21968bd8c8f1SEdward Tomasz Napierala * fetched from tunables. Most of those could be set at the 21978bd8c8f1SEdward Tomasz Napierala * declaration, except for the rctl_throttle_max - we cannot 21988bd8c8f1SEdward Tomasz Napierala * set it there due to hz not being compile time constant. 21998bd8c8f1SEdward Tomasz Napierala */ 22008bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_min < 1) 2201ae34b6ffSEdward Tomasz Napierala rctl_throttle_min = 1; 22028bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_max < rctl_throttle_min) 2203ae34b6ffSEdward Tomasz Napierala rctl_throttle_max = 2 * hz; 22048bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct < 0) 2205ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct = 100; 22068bd8c8f1SEdward Tomasz Napierala if (rctl_throttle_pct2 < 0) 2207ae34b6ffSEdward Tomasz Napierala rctl_throttle_pct2 = 100; 2208ec125fbbSEdward Tomasz Napierala } 2209ec125fbbSEdward Tomasz Napierala 2210ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 2211ec125fbbSEdward Tomasz Napierala 2212ec125fbbSEdward Tomasz Napierala int 22138451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_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_get_rules(struct thread *td, struct rctl_get_rules_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_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 2228ec125fbbSEdward Tomasz Napierala { 2229ec125fbbSEdward Tomasz Napierala 2230ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2231ec125fbbSEdward Tomasz Napierala } 2232ec125fbbSEdward Tomasz Napierala 2233ec125fbbSEdward Tomasz Napierala int 22348451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 2235ec125fbbSEdward Tomasz Napierala { 2236ec125fbbSEdward Tomasz Napierala 2237ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2238ec125fbbSEdward Tomasz Napierala } 2239ec125fbbSEdward Tomasz Napierala 2240ec125fbbSEdward Tomasz Napierala int 22418451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 2242ec125fbbSEdward Tomasz Napierala { 2243ec125fbbSEdward Tomasz Napierala 2244ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2245ec125fbbSEdward Tomasz Napierala } 2246ec125fbbSEdward Tomasz Napierala 2247ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 2248