1ec125fbbSEdward Tomasz Napierala /*- 2ec125fbbSEdward Tomasz Napierala * Copyright (c) 2010 The FreeBSD Foundation 3ec125fbbSEdward Tomasz Napierala * All rights reserved. 4ec125fbbSEdward Tomasz Napierala * 5ec125fbbSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 6ec125fbbSEdward Tomasz Napierala * from the FreeBSD Foundation. 7ec125fbbSEdward Tomasz Napierala * 8ec125fbbSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 9ec125fbbSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 10ec125fbbSEdward Tomasz Napierala * are met: 11ec125fbbSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 12ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 13ec125fbbSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 14ec125fbbSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 15ec125fbbSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 16ec125fbbSEdward Tomasz Napierala * 17ec125fbbSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18ec125fbbSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19ec125fbbSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20ec125fbbSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21ec125fbbSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22ec125fbbSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23ec125fbbSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24ec125fbbSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25ec125fbbSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26ec125fbbSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27ec125fbbSEdward Tomasz Napierala * SUCH DAMAGE. 28ec125fbbSEdward Tomasz Napierala * 29ec125fbbSEdward Tomasz Napierala * $FreeBSD$ 30ec125fbbSEdward Tomasz Napierala */ 31ec125fbbSEdward Tomasz Napierala 32ec125fbbSEdward Tomasz Napierala #include <sys/cdefs.h> 33ec125fbbSEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 34ec125fbbSEdward Tomasz Napierala 35ec125fbbSEdward Tomasz Napierala #include <sys/param.h> 36ec125fbbSEdward Tomasz Napierala #include <sys/bus.h> 37ec125fbbSEdward Tomasz Napierala #include <sys/malloc.h> 38ec125fbbSEdward Tomasz Napierala #include <sys/queue.h> 39ec125fbbSEdward Tomasz Napierala #include <sys/refcount.h> 40ec125fbbSEdward Tomasz Napierala #include <sys/jail.h> 41ec125fbbSEdward Tomasz Napierala #include <sys/kernel.h> 42ec125fbbSEdward Tomasz Napierala #include <sys/limits.h> 43ec125fbbSEdward Tomasz Napierala #include <sys/loginclass.h> 44ec125fbbSEdward Tomasz Napierala #include <sys/priv.h> 45ec125fbbSEdward Tomasz Napierala #include <sys/proc.h> 46ec125fbbSEdward Tomasz Napierala #include <sys/racct.h> 47ec125fbbSEdward Tomasz Napierala #include <sys/rctl.h> 48ec125fbbSEdward Tomasz Napierala #include <sys/resourcevar.h> 49ec125fbbSEdward Tomasz Napierala #include <sys/sx.h> 50ec125fbbSEdward Tomasz Napierala #include <sys/sysent.h> 51ec125fbbSEdward Tomasz Napierala #include <sys/sysproto.h> 52ec125fbbSEdward Tomasz Napierala #include <sys/systm.h> 53ec125fbbSEdward Tomasz Napierala #include <sys/types.h> 54ec125fbbSEdward Tomasz Napierala #include <sys/eventhandler.h> 55ec125fbbSEdward Tomasz Napierala #include <sys/lock.h> 56ec125fbbSEdward Tomasz Napierala #include <sys/mutex.h> 57ec125fbbSEdward Tomasz Napierala #include <sys/rwlock.h> 58ec125fbbSEdward Tomasz Napierala #include <sys/sbuf.h> 59ec125fbbSEdward Tomasz Napierala #include <sys/taskqueue.h> 60ec125fbbSEdward Tomasz Napierala #include <sys/tree.h> 61ec125fbbSEdward Tomasz Napierala #include <vm/uma.h> 62ec125fbbSEdward Tomasz Napierala 63ec125fbbSEdward Tomasz Napierala #ifdef RCTL 64ec125fbbSEdward Tomasz Napierala #ifndef RACCT 65ec125fbbSEdward Tomasz Napierala #error "The RCTL option requires the RACCT option" 66ec125fbbSEdward Tomasz Napierala #endif 67ec125fbbSEdward Tomasz Napierala 68ec125fbbSEdward Tomasz Napierala FEATURE(rctl, "Resource Limits"); 69ec125fbbSEdward Tomasz Napierala 70ec125fbbSEdward Tomasz Napierala #define HRF_DEFAULT 0 71ec125fbbSEdward Tomasz Napierala #define HRF_DONT_INHERIT 1 72ec125fbbSEdward Tomasz Napierala #define HRF_DONT_ACCUMULATE 2 73ec125fbbSEdward Tomasz Napierala 74ea228b48SEdward Tomasz Napierala #define RCTL_MAX_INBUFSIZE 4 * 1024 75ea228b48SEdward Tomasz Napierala #define RCTL_MAX_OUTBUFSIZE 16 * 1024 * 1024 76ec125fbbSEdward Tomasz Napierala #define RCTL_LOG_BUFSIZE 128 77ec125fbbSEdward Tomasz Napierala 7836af9869SEdward Tomasz Napierala #define RCTL_PCPU_SHIFT (10 * 1000000) 7936af9869SEdward Tomasz Napierala 80ea228b48SEdward Tomasz Napierala unsigned int rctl_maxbufsize = RCTL_MAX_OUTBUFSIZE; 81*f70c075eSEdward Tomasz Napierala static int rctl_log_rate_limit = 10; 82*f70c075eSEdward Tomasz Napierala static int rctl_devctl_rate_limit = 10; 832b4035eeSEdward Tomasz Napierala 842b4035eeSEdward Tomasz Napierala SYSCTL_NODE(_kern_racct, OID_AUTO, rctl, CTLFLAG_RW, 0, "Resource Limits"); 852b4035eeSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, maxbufsize, CTLFLAG_RWTUN, 862b4035eeSEdward Tomasz Napierala &rctl_maxbufsize, 0, "Maximum output buffer size"); 87*f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW, 88*f70c075eSEdward Tomasz Napierala &rctl_log_rate_limit, 0, "Maximum number of log messages per second"); 89*f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RW, 90*f70c075eSEdward Tomasz Napierala &rctl_devctl_rate_limit, 0, "Maximum number of devctl messages per second"); 912b4035eeSEdward Tomasz Napierala 92ec125fbbSEdward Tomasz Napierala /* 93ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 94ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 95ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 96ec125fbbSEdward Tomasz Napierala */ 97ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 98ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 99ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 100ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 101ec125fbbSEdward Tomasz Napierala }; 102ec125fbbSEdward Tomasz Napierala 103ec125fbbSEdward Tomasz Napierala struct dict { 104ec125fbbSEdward Tomasz Napierala const char *d_name; 105ec125fbbSEdward Tomasz Napierala int d_value; 106ec125fbbSEdward Tomasz Napierala }; 107ec125fbbSEdward Tomasz Napierala 108ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 109ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 110ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 111ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 112ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 113ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 114ec125fbbSEdward Tomasz Napierala 115ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 11685a2f1b4SEdward Tomasz Napierala { "cputime", RACCT_CPU }, 11785a2f1b4SEdward Tomasz Napierala { "datasize", RACCT_DATA }, 11885a2f1b4SEdward Tomasz Napierala { "stacksize", RACCT_STACK }, 11985a2f1b4SEdward Tomasz Napierala { "coredumpsize", RACCT_CORE }, 12085a2f1b4SEdward Tomasz Napierala { "memoryuse", RACCT_RSS }, 12185a2f1b4SEdward Tomasz Napierala { "memorylocked", RACCT_MEMLOCK }, 12285a2f1b4SEdward Tomasz Napierala { "maxproc", RACCT_NPROC }, 12385a2f1b4SEdward Tomasz Napierala { "openfiles", RACCT_NOFILE }, 12485a2f1b4SEdward Tomasz Napierala { "vmemoryuse", RACCT_VMEM }, 12585a2f1b4SEdward Tomasz Napierala { "pseudoterminals", RACCT_NPTS }, 12685a2f1b4SEdward Tomasz Napierala { "swapuse", RACCT_SWAP }, 127ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 128ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 129ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 130ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 131ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 132ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 133ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 134ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 135ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 13636af9869SEdward Tomasz Napierala { "pcpu", RACCT_PCTCPU }, 137ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 138ec125fbbSEdward Tomasz Napierala 139ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 140ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 141ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 142ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 143ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 144ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 145ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 146ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 147ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 148ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 149ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 150ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 151ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 152ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 153ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 154ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 155ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 156ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 157ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 158ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 159ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 160ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 161ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 162ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 163ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 164ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 165ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 166ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 167ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 168ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 169ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 170ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 171ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 172ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 173ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 174ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 175ec125fbbSEdward Tomasz Napierala 176ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 177ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 178ec125fbbSEdward Tomasz Napierala 179ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 180ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 181ec125fbbSEdward Tomasz Napierala static struct rwlock rctl_lock; 182ec125fbbSEdward Tomasz Napierala RW_SYSINIT(rctl_lock, &rctl_lock, "RCTL lock"); 183ec125fbbSEdward Tomasz Napierala 184ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 185ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 186ec125fbbSEdward Tomasz Napierala 187d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 188ec125fbbSEdward Tomasz Napierala 189ec125fbbSEdward Tomasz Napierala static const char * 190ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 191ec125fbbSEdward Tomasz Napierala { 192ec125fbbSEdward Tomasz Napierala int i; 193ec125fbbSEdward Tomasz Napierala 194ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 195ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 196ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 197ec125fbbSEdward Tomasz Napierala } 198ec125fbbSEdward Tomasz Napierala 199ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 200ec125fbbSEdward Tomasz Napierala } 201ec125fbbSEdward Tomasz Napierala 202ec125fbbSEdward Tomasz Napierala static const char * 203ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 204ec125fbbSEdward Tomasz Napierala { 205ec125fbbSEdward Tomasz Napierala int i; 206ec125fbbSEdward Tomasz Napierala 207ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 208ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 209ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 210ec125fbbSEdward Tomasz Napierala } 211ec125fbbSEdward Tomasz Napierala 212ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 213ec125fbbSEdward Tomasz Napierala } 214ec125fbbSEdward Tomasz Napierala 215ec125fbbSEdward Tomasz Napierala const char * 216ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 217ec125fbbSEdward Tomasz Napierala { 218ec125fbbSEdward Tomasz Napierala int i; 219ec125fbbSEdward Tomasz Napierala 220ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 221ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 222ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 223ec125fbbSEdward Tomasz Napierala } 224ec125fbbSEdward Tomasz Napierala 225ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 226ec125fbbSEdward Tomasz Napierala } 227ec125fbbSEdward Tomasz Napierala 228ac3c9819SEdward Tomasz Napierala static struct racct * 229ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 230ac3c9819SEdward Tomasz Napierala { 231ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 232ac3c9819SEdward Tomasz Napierala 233ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 234ac3c9819SEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 235ac3c9819SEdward Tomasz Napierala 236ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 237ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 238ac3c9819SEdward Tomasz Napierala return (p->p_racct); 239ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 240ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 241ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 242ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 243ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 244ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 245ac3c9819SEdward Tomasz Napierala default: 246ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 247ac3c9819SEdward Tomasz Napierala } 248ac3c9819SEdward Tomasz Napierala } 249ac3c9819SEdward Tomasz Napierala 250ec125fbbSEdward Tomasz Napierala /* 251ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 252ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 253ec125fbbSEdward Tomasz Napierala */ 254ec125fbbSEdward Tomasz Napierala static int64_t 255ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 256ec125fbbSEdward Tomasz Napierala { 257ac3c9819SEdward Tomasz Napierala int64_t available; 258ac3c9819SEdward Tomasz Napierala const struct racct *racct; 259ec125fbbSEdward Tomasz Napierala 2604b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 261ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 262ec125fbbSEdward Tomasz Napierala 263ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 264ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 265ec125fbbSEdward Tomasz Napierala 266ec125fbbSEdward Tomasz Napierala return (available); 267ec125fbbSEdward Tomasz Napierala } 268ec125fbbSEdward Tomasz Napierala 269ec125fbbSEdward Tomasz Napierala /* 270ec125fbbSEdward Tomasz Napierala * Return non-zero if allocating 'amount' by proc 'p' would exceed 271ec125fbbSEdward Tomasz Napierala * resource limit specified by 'rule'. 272ec125fbbSEdward Tomasz Napierala */ 273ec125fbbSEdward Tomasz Napierala static int 274ec125fbbSEdward Tomasz Napierala rctl_would_exceed(const struct proc *p, const struct rctl_rule *rule, 275ec125fbbSEdward Tomasz Napierala int64_t amount) 276ec125fbbSEdward Tomasz Napierala { 277ec125fbbSEdward Tomasz Napierala int64_t available; 278ec125fbbSEdward Tomasz Napierala 2794b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 2804b5c9cf6SEdward Tomasz Napierala 281ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 282ec125fbbSEdward Tomasz Napierala 283ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 284ec125fbbSEdward Tomasz Napierala if (available >= amount) 285ec125fbbSEdward Tomasz Napierala return (0); 286ec125fbbSEdward Tomasz Napierala 287ec125fbbSEdward Tomasz Napierala return (1); 288ec125fbbSEdward Tomasz Napierala } 289ec125fbbSEdward Tomasz Napierala 290ec125fbbSEdward Tomasz Napierala /* 291af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 29236af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 29336af9869SEdward Tomasz Napierala */ 29436af9869SEdward Tomasz Napierala int64_t 29536af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 29636af9869SEdward Tomasz Napierala struct rctl_rule *rule; 29736af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 29836af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 29936af9869SEdward Tomasz Napierala 3004b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3014b5c9cf6SEdward Tomasz Napierala 30236af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 30336af9869SEdward Tomasz Napierala limit = 0; 30436af9869SEdward Tomasz Napierala 30536af9869SEdward Tomasz Napierala rw_rlock(&rctl_lock); 30636af9869SEdward Tomasz Napierala 30736af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 30836af9869SEdward Tomasz Napierala rule = link->rrl_rule; 30936af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 31036af9869SEdward Tomasz Napierala continue; 31136af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 31236af9869SEdward Tomasz Napierala continue; 31336af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 31436af9869SEdward Tomasz Napierala if (available < minavailable) { 31536af9869SEdward Tomasz Napierala minavailable = available; 31636af9869SEdward Tomasz Napierala limit = rule->rr_amount; 31736af9869SEdward Tomasz Napierala } 31836af9869SEdward Tomasz Napierala } 31936af9869SEdward Tomasz Napierala 32036af9869SEdward Tomasz Napierala rw_runlock(&rctl_lock); 32136af9869SEdward Tomasz Napierala 32236af9869SEdward Tomasz Napierala /* 32336af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 32436af9869SEdward Tomasz Napierala * %cpu resource. This makes %cpu throttling more agressive 32536af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 32636af9869SEdward Tomasz Napierala */ 32736af9869SEdward Tomasz Napierala if (limit != 0) { 32836af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 32936af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 33036af9869SEdward Tomasz Napierala else 33136af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 33236af9869SEdward Tomasz Napierala } 33336af9869SEdward Tomasz Napierala 33436af9869SEdward Tomasz Napierala return (minavailable); 33536af9869SEdward Tomasz Napierala } 33636af9869SEdward Tomasz Napierala 33736af9869SEdward Tomasz Napierala /* 338ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 339ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 340ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 341ec125fbbSEdward Tomasz Napierala */ 342ec125fbbSEdward Tomasz Napierala int 343ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 344ec125fbbSEdward Tomasz Napierala { 345*f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 346*f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 347ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 348ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 349ec125fbbSEdward Tomasz Napierala struct sbuf sb; 350ec125fbbSEdward Tomasz Napierala int should_deny = 0; 351ec125fbbSEdward Tomasz Napierala char *buf; 352ec125fbbSEdward Tomasz Napierala 3534b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3544b5c9cf6SEdward Tomasz Napierala 355ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 356ec125fbbSEdward Tomasz Napierala 357ec125fbbSEdward Tomasz Napierala /* 358ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 359ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 360ec125fbbSEdward Tomasz Napierala */ 361ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 362ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 363ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 364ec125fbbSEdward Tomasz Napierala continue; 365ec125fbbSEdward Tomasz Napierala if (!rctl_would_exceed(p, rule, amount)) { 366ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 367ec125fbbSEdward Tomasz Napierala continue; 368ec125fbbSEdward Tomasz Napierala } 369ec125fbbSEdward Tomasz Napierala 370ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 371ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 372ec125fbbSEdward Tomasz Napierala should_deny = 1; 373ec125fbbSEdward Tomasz Napierala continue; 374ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 375ec125fbbSEdward Tomasz Napierala /* 376ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 377ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 378ec125fbbSEdward Tomasz Napierala */ 379ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 380ec125fbbSEdward Tomasz Napierala continue; 381ec125fbbSEdward Tomasz Napierala 38272a401d9SEdward Tomasz Napierala /* 38372a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 38472a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 38572a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 38672a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 38772a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 38872a401d9SEdward Tomasz Napierala */ 38972a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 39072a401d9SEdward Tomasz Napierala continue; 39172a401d9SEdward Tomasz Napierala 392*f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 393*f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 394ec125fbbSEdward Tomasz Napierala continue; 395ec125fbbSEdward Tomasz Napierala 396ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 397ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 398ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 399ec125fbbSEdward Tomasz Napierala continue; 400ec125fbbSEdward Tomasz Napierala } 401ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 402ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 403ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 404ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 405ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 406ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 407a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 408ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 409ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 410ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 411ec125fbbSEdward Tomasz Napierala continue; 412ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 413ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 414ec125fbbSEdward Tomasz Napierala continue; 415ec125fbbSEdward Tomasz Napierala 41672a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 41772a401d9SEdward Tomasz Napierala continue; 41872a401d9SEdward Tomasz Napierala 419*f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 420*f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 421*f70c075eSEdward Tomasz Napierala continue; 422*f70c075eSEdward Tomasz Napierala 423ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 424ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 425ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 426ec125fbbSEdward Tomasz Napierala continue; 427ec125fbbSEdward Tomasz Napierala } 428ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 429ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 430ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 431ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 432ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 433a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 434ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 435ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 436ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 437ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 438ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 439ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 440ec125fbbSEdward Tomasz Napierala continue; 441ec125fbbSEdward Tomasz Napierala default: 442ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 443ec125fbbSEdward Tomasz Napierala continue; 444ec125fbbSEdward Tomasz Napierala 44572a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 44672a401d9SEdward Tomasz Napierala continue; 44772a401d9SEdward Tomasz Napierala 448ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 449ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 450ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 451ec125fbbSEdward Tomasz Napierala rule->rr_action)); 452ec125fbbSEdward Tomasz Napierala 453ec125fbbSEdward Tomasz Napierala /* 454ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 455ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 456ec125fbbSEdward Tomasz Napierala */ 4578451d0ddSKip Macy kern_psignal(p, rule->rr_action); 458ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 459ec125fbbSEdward Tomasz Napierala continue; 460ec125fbbSEdward Tomasz Napierala } 461ec125fbbSEdward Tomasz Napierala } 462ec125fbbSEdward Tomasz Napierala 463ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 464ec125fbbSEdward Tomasz Napierala 465ec125fbbSEdward Tomasz Napierala if (should_deny) { 466ec125fbbSEdward Tomasz Napierala /* 467ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 468ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 469ec125fbbSEdward Tomasz Napierala */ 470ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 471ec125fbbSEdward Tomasz Napierala } 472ec125fbbSEdward Tomasz Napierala 473ec125fbbSEdward Tomasz Napierala return (0); 474ec125fbbSEdward Tomasz Napierala } 475ec125fbbSEdward Tomasz Napierala 476ec125fbbSEdward Tomasz Napierala uint64_t 477ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 478ec125fbbSEdward Tomasz Napierala { 479ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 480ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 481ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 482ec125fbbSEdward Tomasz Napierala 4834b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 4844b5c9cf6SEdward Tomasz Napierala 485ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 486ec125fbbSEdward Tomasz Napierala 487ec125fbbSEdward Tomasz Napierala /* 488ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 489ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 490ec125fbbSEdward Tomasz Napierala */ 491ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 492ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 493ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 494ec125fbbSEdward Tomasz Napierala continue; 495ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 496ec125fbbSEdward Tomasz Napierala continue; 497ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 498ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 499ec125fbbSEdward Tomasz Napierala } 500ec125fbbSEdward Tomasz Napierala 501ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 502ec125fbbSEdward Tomasz Napierala 503ec125fbbSEdward Tomasz Napierala return (amount); 504ec125fbbSEdward Tomasz Napierala } 505ec125fbbSEdward Tomasz Napierala 506ec125fbbSEdward Tomasz Napierala uint64_t 507ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 508ec125fbbSEdward Tomasz Napierala { 509ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 510ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 511ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 512ec125fbbSEdward Tomasz Napierala 513ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 514ec125fbbSEdward Tomasz Napierala 5154b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 5164b5c9cf6SEdward Tomasz Napierala 517ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 518ec125fbbSEdward Tomasz Napierala 519ec125fbbSEdward Tomasz Napierala /* 520ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 521ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 522ec125fbbSEdward Tomasz Napierala */ 523ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 524ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 525ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 526ec125fbbSEdward Tomasz Napierala continue; 527ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 528ec125fbbSEdward Tomasz Napierala continue; 529ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 530ec125fbbSEdward Tomasz Napierala if (available < minavailable) 531ec125fbbSEdward Tomasz Napierala minavailable = available; 532ec125fbbSEdward Tomasz Napierala } 533ec125fbbSEdward Tomasz Napierala 534ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 535ec125fbbSEdward Tomasz Napierala 536ec125fbbSEdward Tomasz Napierala /* 537ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 538ec125fbbSEdward Tomasz Napierala */ 539ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 540ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 541ec125fbbSEdward Tomasz Napierala minavailable += allocated; 542ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 543ec125fbbSEdward Tomasz Napierala minavailable = 0; 544ec125fbbSEdward Tomasz Napierala return (minavailable); 545ec125fbbSEdward Tomasz Napierala } 546ec125fbbSEdward Tomasz Napierala 547ec125fbbSEdward Tomasz Napierala static int 548ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 549ec125fbbSEdward Tomasz Napierala { 550ec125fbbSEdward Tomasz Napierala 5514b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 5524b5c9cf6SEdward Tomasz Napierala 553ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 554ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 555ec125fbbSEdward Tomasz Napierala return (0); 556ec125fbbSEdward Tomasz Napierala 557ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 558ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 559ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 560ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 561ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 562ec125fbbSEdward Tomasz Napierala return (0); 563ec125fbbSEdward Tomasz Napierala break; 564ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 565ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 566ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 567ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 568ec125fbbSEdward Tomasz Napierala return (0); 569ec125fbbSEdward Tomasz Napierala break; 570ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 571415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 572415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 573415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 574ec125fbbSEdward Tomasz Napierala return (0); 575ec125fbbSEdward Tomasz Napierala break; 576ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 577a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 578a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 579a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 580ec125fbbSEdward Tomasz Napierala return (0); 581ec125fbbSEdward Tomasz Napierala break; 582ec125fbbSEdward Tomasz Napierala default: 583ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 584ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 585ec125fbbSEdward Tomasz Napierala } 586ec125fbbSEdward Tomasz Napierala } 587ec125fbbSEdward Tomasz Napierala 588ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 589ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 590ec125fbbSEdward Tomasz Napierala return (0); 591ec125fbbSEdward Tomasz Napierala } 592ec125fbbSEdward Tomasz Napierala 593ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 594ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 595ec125fbbSEdward Tomasz Napierala return (0); 596ec125fbbSEdward Tomasz Napierala } 597ec125fbbSEdward Tomasz Napierala 598ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 599ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 600ec125fbbSEdward Tomasz Napierala return (0); 601ec125fbbSEdward Tomasz Napierala } 602ec125fbbSEdward Tomasz Napierala 603ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 604ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 605ec125fbbSEdward Tomasz Napierala return (0); 606ec125fbbSEdward Tomasz Napierala } 607ec125fbbSEdward Tomasz Napierala 608ec125fbbSEdward Tomasz Napierala return (1); 609ec125fbbSEdward Tomasz Napierala } 610ec125fbbSEdward Tomasz Napierala 611ec125fbbSEdward Tomasz Napierala static int 612ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 613ec125fbbSEdward Tomasz Napierala { 614ec125fbbSEdward Tomasz Napierala int i; 615ec125fbbSEdward Tomasz Napierala 616ec125fbbSEdward Tomasz Napierala if (value == NULL) 617ec125fbbSEdward Tomasz Napierala return (EINVAL); 618ec125fbbSEdward Tomasz Napierala 619ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 620ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 621ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 622ec125fbbSEdward Tomasz Napierala return (0); 623ec125fbbSEdward Tomasz Napierala } 624ec125fbbSEdward Tomasz Napierala } 625ec125fbbSEdward Tomasz Napierala 626ec125fbbSEdward Tomasz Napierala return (EINVAL); 627ec125fbbSEdward Tomasz Napierala } 628ec125fbbSEdward Tomasz Napierala 629ec125fbbSEdward Tomasz Napierala static int 630ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 631ec125fbbSEdward Tomasz Napierala { 632ec125fbbSEdward Tomasz Napierala char *end; 633ec125fbbSEdward Tomasz Napierala 634ec125fbbSEdward Tomasz Napierala if (str == NULL) 635ec125fbbSEdward Tomasz Napierala return (EINVAL); 636ec125fbbSEdward Tomasz Napierala 637ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 638ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 639ec125fbbSEdward Tomasz Napierala return (EINVAL); 640ec125fbbSEdward Tomasz Napierala 641ec125fbbSEdward Tomasz Napierala return (0); 642ec125fbbSEdward Tomasz Napierala } 643ec125fbbSEdward Tomasz Napierala 644ec125fbbSEdward Tomasz Napierala static int 645ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 646ec125fbbSEdward Tomasz Napierala { 647ec125fbbSEdward Tomasz Napierala char *end; 648ec125fbbSEdward Tomasz Napierala 649ec125fbbSEdward Tomasz Napierala if (str == NULL) 650ec125fbbSEdward Tomasz Napierala return (EINVAL); 651ec125fbbSEdward Tomasz Napierala 652ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 653ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 654ec125fbbSEdward Tomasz Napierala return (EINVAL); 655ec125fbbSEdward Tomasz Napierala 656b450d447SEdward Tomasz Napierala if (*value < 0) 657b450d447SEdward Tomasz Napierala return (ERANGE); 658b450d447SEdward Tomasz Napierala 659ec125fbbSEdward Tomasz Napierala return (0); 660ec125fbbSEdward Tomasz Napierala } 661ec125fbbSEdward Tomasz Napierala 662ec125fbbSEdward Tomasz Napierala /* 663ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 664ec125fbbSEdward Tomasz Napierala */ 665ec125fbbSEdward Tomasz Napierala static void 666ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 667ec125fbbSEdward Tomasz Napierala { 668ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 669ec125fbbSEdward Tomasz Napierala 6704b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 671ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 672ec125fbbSEdward Tomasz Napierala 673ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 674ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 675ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 676ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 677ec125fbbSEdward Tomasz Napierala 678ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 679ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 680ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 681ec125fbbSEdward Tomasz Napierala } 682ec125fbbSEdward Tomasz Napierala 683ec125fbbSEdward Tomasz Napierala static int 684ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 685ec125fbbSEdward Tomasz Napierala { 686ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 687ec125fbbSEdward Tomasz Napierala 6884b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 689ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 690ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_WLOCKED); 691ec125fbbSEdward Tomasz Napierala 692ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 693ec125fbbSEdward Tomasz Napierala if (link == NULL) 694ec125fbbSEdward Tomasz Napierala return (ENOMEM); 695ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 696ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 697ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 698ec125fbbSEdward Tomasz Napierala 699ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 700ec125fbbSEdward Tomasz Napierala return (0); 701ec125fbbSEdward Tomasz Napierala } 702ec125fbbSEdward Tomasz Napierala 703ec125fbbSEdward Tomasz Napierala /* 704ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 705ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 706ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 707ec125fbbSEdward Tomasz Napierala */ 708ec125fbbSEdward Tomasz Napierala static int 709ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 710ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 711ec125fbbSEdward Tomasz Napierala { 712ec125fbbSEdward Tomasz Napierala int removed = 0; 713ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 714ec125fbbSEdward Tomasz Napierala 7154b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 716ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_WLOCKED); 717ec125fbbSEdward Tomasz Napierala 718ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 719ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 720ec125fbbSEdward Tomasz Napierala continue; 721ec125fbbSEdward Tomasz Napierala 722ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 723ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 724ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 725ec125fbbSEdward Tomasz Napierala removed++; 726ec125fbbSEdward Tomasz Napierala } 727ec125fbbSEdward Tomasz Napierala return (removed); 728ec125fbbSEdward Tomasz Napierala } 729ec125fbbSEdward Tomasz Napierala 730ec125fbbSEdward Tomasz Napierala static void 731ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 732ec125fbbSEdward Tomasz Napierala { 733ec125fbbSEdward Tomasz Napierala 7344b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7354b5c9cf6SEdward Tomasz Napierala 736ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 737ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 738ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 739a7ad07bfSEdward Tomasz Napierala break; 740ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 741a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 742a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 743ec125fbbSEdward Tomasz Napierala break; 744ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 745ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 746ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 747ec125fbbSEdward Tomasz Napierala break; 748ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 749415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 750415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 751ec125fbbSEdward Tomasz Napierala break; 752ec125fbbSEdward Tomasz Napierala default: 753ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 754ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 755ec125fbbSEdward Tomasz Napierala } 756ec125fbbSEdward Tomasz Napierala } 757ec125fbbSEdward Tomasz Napierala 758ec125fbbSEdward Tomasz Napierala static void 759ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 760ec125fbbSEdward Tomasz Napierala { 761ec125fbbSEdward Tomasz Napierala 7624b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7634b5c9cf6SEdward Tomasz Napierala 764ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 765ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 766ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 767a7ad07bfSEdward Tomasz Napierala break; 768ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 769a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 770a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 771ec125fbbSEdward Tomasz Napierala break; 772ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 773ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 774ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 775ec125fbbSEdward Tomasz Napierala break; 776ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 777415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 778415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 779ec125fbbSEdward Tomasz Napierala break; 780ec125fbbSEdward Tomasz Napierala default: 781ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 782ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 783ec125fbbSEdward Tomasz Napierala } 784ec125fbbSEdward Tomasz Napierala } 785ec125fbbSEdward Tomasz Napierala 786ec125fbbSEdward Tomasz Napierala struct rctl_rule * 787ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 788ec125fbbSEdward Tomasz Napierala { 789ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 790ec125fbbSEdward Tomasz Napierala 7914b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7924b5c9cf6SEdward Tomasz Napierala 793ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 794ec125fbbSEdward Tomasz Napierala if (rule == NULL) 795ec125fbbSEdward Tomasz Napierala return (NULL); 796ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 797ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 798ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 799415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 800a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 801ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 802ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 803ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 804ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 805ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 806ec125fbbSEdward Tomasz Napierala 807ec125fbbSEdward Tomasz Napierala return (rule); 808ec125fbbSEdward Tomasz Napierala } 809ec125fbbSEdward Tomasz Napierala 810ec125fbbSEdward Tomasz Napierala struct rctl_rule * 811ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 812ec125fbbSEdward Tomasz Napierala { 813ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 814ec125fbbSEdward Tomasz Napierala 8154b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 8164b5c9cf6SEdward Tomasz Napierala 817ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 818ec125fbbSEdward Tomasz Napierala if (copy == NULL) 819ec125fbbSEdward Tomasz Napierala return (NULL); 820ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 821ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 822ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 823415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 824a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 825ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 826ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 827ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 828ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 829ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 830ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 831ec125fbbSEdward Tomasz Napierala 832ec125fbbSEdward Tomasz Napierala return (copy); 833ec125fbbSEdward Tomasz Napierala } 834ec125fbbSEdward Tomasz Napierala 835ec125fbbSEdward Tomasz Napierala void 836ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 837ec125fbbSEdward Tomasz Napierala { 838ec125fbbSEdward Tomasz Napierala 8394b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 840ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 841ec125fbbSEdward Tomasz Napierala 842ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 843ec125fbbSEdward Tomasz Napierala } 844ec125fbbSEdward Tomasz Napierala 845ec125fbbSEdward Tomasz Napierala static void 846ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 847ec125fbbSEdward Tomasz Napierala { 848ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 849ec125fbbSEdward Tomasz Napierala 850ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 851ec125fbbSEdward Tomasz Napierala 8524b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 853ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 854ec125fbbSEdward Tomasz Napierala 855ec125fbbSEdward Tomasz Napierala /* 856ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 857ec125fbbSEdward Tomasz Napierala */ 858ec125fbbSEdward Tomasz Napierala 859ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 860ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 861ec125fbbSEdward Tomasz Napierala } 862ec125fbbSEdward Tomasz Napierala 863ec125fbbSEdward Tomasz Napierala void 864ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 865ec125fbbSEdward Tomasz Napierala { 866ec125fbbSEdward Tomasz Napierala 8674b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 868ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 869ec125fbbSEdward Tomasz Napierala 870ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 871ec125fbbSEdward Tomasz Napierala /* 872ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 873ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 874ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 875ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 876ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 877ec125fbbSEdward Tomasz Napierala */ 878ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 879ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 880ec125fbbSEdward Tomasz Napierala } 881ec125fbbSEdward Tomasz Napierala } 882ec125fbbSEdward Tomasz Napierala 883ec125fbbSEdward Tomasz Napierala static int 884ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 885ec125fbbSEdward Tomasz Napierala { 886ec125fbbSEdward Tomasz Napierala 8874b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 8884b5c9cf6SEdward Tomasz Napierala 889ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 890ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 891ec125fbbSEdward Tomasz Napierala return (0); 892ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 893ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 894ec125fbbSEdward Tomasz Napierala return (0); 895ec125fbbSEdward Tomasz Napierala break; 896ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 897ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 898ec125fbbSEdward Tomasz Napierala return (0); 899ec125fbbSEdward Tomasz Napierala break; 900ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 901415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 902ec125fbbSEdward Tomasz Napierala return (0); 903ec125fbbSEdward Tomasz Napierala break; 904ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 905a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 906ec125fbbSEdward Tomasz Napierala return (0); 907ec125fbbSEdward Tomasz Napierala break; 908ec125fbbSEdward Tomasz Napierala default: 909ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 910ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 911ec125fbbSEdward Tomasz Napierala } 912ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 913ec125fbbSEdward Tomasz Napierala return (0); 914ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 915ec125fbbSEdward Tomasz Napierala return (0); 916ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 917ec125fbbSEdward Tomasz Napierala return (0); 918ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 919ec125fbbSEdward Tomasz Napierala return (0); 920ec125fbbSEdward Tomasz Napierala 921ec125fbbSEdward Tomasz Napierala return (1); 922ec125fbbSEdward Tomasz Napierala } 923ec125fbbSEdward Tomasz Napierala 924ec125fbbSEdward Tomasz Napierala static int 925ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 926ec125fbbSEdward Tomasz Napierala { 927ec125fbbSEdward Tomasz Napierala int error = 0; 928ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 929ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 930ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 931ec125fbbSEdward Tomasz Napierala id_t id; 932ec125fbbSEdward Tomasz Napierala 9334b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9344b5c9cf6SEdward Tomasz Napierala 935ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 936ec125fbbSEdward Tomasz Napierala 937ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 938ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 939ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 940ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 941ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 942ec125fbbSEdward Tomasz Napierala perstr = rulestr; 943ec125fbbSEdward Tomasz Napierala 944ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 945ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 946ec125fbbSEdward Tomasz Napierala else { 947ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 948ec125fbbSEdward Tomasz Napierala if (error != 0) 949ec125fbbSEdward Tomasz Napierala goto out; 950ec125fbbSEdward Tomasz Napierala } 951ec125fbbSEdward Tomasz Napierala 952ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 953ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 954ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 955415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 956a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 957ec125fbbSEdward Tomasz Napierala } else { 958ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 959ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 960ec125fbbSEdward Tomasz Napierala error = EINVAL; 961ec125fbbSEdward Tomasz Napierala goto out; 962ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 963ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 964ec125fbbSEdward Tomasz Napierala if (error != 0) 965ec125fbbSEdward Tomasz Napierala goto out; 966ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 967ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 968ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 969ec125fbbSEdward Tomasz Napierala error = ESRCH; 970ec125fbbSEdward Tomasz Napierala goto out; 971ec125fbbSEdward Tomasz Napierala } 972ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 973ec125fbbSEdward Tomasz Napierala break; 974ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 975ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 976ec125fbbSEdward Tomasz Napierala if (error != 0) 977ec125fbbSEdward Tomasz Napierala goto out; 978ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 979ec125fbbSEdward Tomasz Napierala break; 980ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 981415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 982ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 983415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 984ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 985ec125fbbSEdward Tomasz Napierala goto out; 986ec125fbbSEdward Tomasz Napierala } 987ec125fbbSEdward Tomasz Napierala break; 988ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 989a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 990a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 991a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 992a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 993ec125fbbSEdward Tomasz Napierala goto out; 994ec125fbbSEdward Tomasz Napierala } 995ec125fbbSEdward Tomasz Napierala break; 996ec125fbbSEdward Tomasz Napierala default: 997ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 998ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 999ec125fbbSEdward Tomasz Napierala } 1000ec125fbbSEdward Tomasz Napierala } 1001ec125fbbSEdward Tomasz Napierala 1002ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1003ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1004ec125fbbSEdward Tomasz Napierala else { 1005ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1006ec125fbbSEdward Tomasz Napierala resourcenames); 1007ec125fbbSEdward Tomasz Napierala if (error != 0) 1008ec125fbbSEdward Tomasz Napierala goto out; 1009ec125fbbSEdward Tomasz Napierala } 1010ec125fbbSEdward Tomasz Napierala 1011ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1012ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1013ec125fbbSEdward Tomasz Napierala else { 1014ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1015ec125fbbSEdward Tomasz Napierala if (error != 0) 1016ec125fbbSEdward Tomasz Napierala goto out; 1017ec125fbbSEdward Tomasz Napierala } 1018ec125fbbSEdward Tomasz Napierala 1019ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1020ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1021ec125fbbSEdward Tomasz Napierala else { 1022ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1023ec125fbbSEdward Tomasz Napierala if (error != 0) 1024ec125fbbSEdward Tomasz Napierala goto out; 1025b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1026b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1027b450d447SEdward Tomasz Napierala error = ERANGE; 1028b450d447SEdward Tomasz Napierala goto out; 1029b450d447SEdward Tomasz Napierala } 1030cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1031ec125fbbSEdward Tomasz Napierala } 1032b450d447SEdward Tomasz Napierala } 1033ec125fbbSEdward Tomasz Napierala 1034ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1035ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1036ec125fbbSEdward Tomasz Napierala else { 1037ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1038ec125fbbSEdward Tomasz Napierala if (error != 0) 1039ec125fbbSEdward Tomasz Napierala goto out; 1040ec125fbbSEdward Tomasz Napierala } 1041ec125fbbSEdward Tomasz Napierala 1042ec125fbbSEdward Tomasz Napierala out: 1043ec125fbbSEdward Tomasz Napierala if (error == 0) 1044ec125fbbSEdward Tomasz Napierala *rulep = rule; 1045ec125fbbSEdward Tomasz Napierala else 1046ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1047ec125fbbSEdward Tomasz Napierala 1048ec125fbbSEdward Tomasz Napierala return (error); 1049ec125fbbSEdward Tomasz Napierala } 1050ec125fbbSEdward Tomasz Napierala 1051ec125fbbSEdward Tomasz Napierala /* 1052ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1053ec125fbbSEdward Tomasz Napierala */ 1054ec125fbbSEdward Tomasz Napierala int 1055ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1056ec125fbbSEdward Tomasz Napierala { 1057ec125fbbSEdward Tomasz Napierala struct proc *p; 1058ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1059ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1060ec125fbbSEdward Tomasz Napierala struct prison *pr; 1061a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1062ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1063ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1064ec125fbbSEdward Tomasz Napierala int match; 1065ec125fbbSEdward Tomasz Napierala 10664b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1067ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1068ec125fbbSEdward Tomasz Napierala 1069ec125fbbSEdward Tomasz Napierala /* 1070ec125fbbSEdward Tomasz Napierala * Some rules just don't make sense. Note that the one below 10714fe84775SEdward Tomasz Napierala * cannot be rewritten using RACCT_IS_DENIABLE(); the RACCT_PCTCPU, 1072ec125fbbSEdward Tomasz Napierala * for example, is not deniable in the racct sense, but the 1073ec125fbbSEdward Tomasz Napierala * limit is enforced in a different way, so "deny" rules for %CPU 1074ec125fbbSEdward Tomasz Napierala * do make sense. 1075ec125fbbSEdward Tomasz Napierala */ 1076ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1077ec125fbbSEdward Tomasz Napierala (rule->rr_resource == RACCT_CPU || 1078ec125fbbSEdward Tomasz Napierala rule->rr_resource == RACCT_WALLCLOCK)) 1079ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1080ec125fbbSEdward Tomasz Napierala 1081ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 10824fe84775SEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) 1083ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1084ec125fbbSEdward Tomasz Napierala 1085ec125fbbSEdward Tomasz Napierala /* 1086ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1087ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1088ec125fbbSEdward Tomasz Napierala */ 1089ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1090ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1091ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1092ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1093ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1094ec125fbbSEdward Tomasz Napierala } else 1095ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1096ec125fbbSEdward Tomasz Napierala 1097ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1098ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1099ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1100ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1101ec125fbbSEdward Tomasz Napierala 1102ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1103ec125fbbSEdward Tomasz Napierala /* 1104ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1105ec125fbbSEdward Tomasz Napierala * to do. 1106ec125fbbSEdward Tomasz Napierala */ 1107ec125fbbSEdward Tomasz Napierala return (0); 1108ec125fbbSEdward Tomasz Napierala 1109ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1110ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1111ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1112ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1113ec125fbbSEdward Tomasz Napierala break; 1114ec125fbbSEdward Tomasz Napierala 1115ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1116415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1117ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1118ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1119ec125fbbSEdward Tomasz Napierala break; 1120ec125fbbSEdward Tomasz Napierala 1121ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1122a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1123a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1124a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1125ec125fbbSEdward Tomasz Napierala break; 1126ec125fbbSEdward Tomasz Napierala 1127ec125fbbSEdward Tomasz Napierala default: 1128ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1129ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1130ec125fbbSEdward Tomasz Napierala } 1131ec125fbbSEdward Tomasz Napierala 1132ec125fbbSEdward Tomasz Napierala /* 1133ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1134ec125fbbSEdward Tomasz Napierala * it applies to. 1135ec125fbbSEdward Tomasz Napierala */ 1136ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1137ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1138ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1139ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1140ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1141ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1142ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1143ec125fbbSEdward Tomasz Napierala break; 1144ec125fbbSEdward Tomasz Napierala continue; 1145ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1146415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1147ec125fbbSEdward Tomasz Napierala break; 1148ec125fbbSEdward Tomasz Napierala continue; 1149ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1150ec125fbbSEdward Tomasz Napierala match = 0; 1151ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1152a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1153ec125fbbSEdward Tomasz Napierala match = 1; 1154ec125fbbSEdward Tomasz Napierala break; 1155ec125fbbSEdward Tomasz Napierala } 1156ec125fbbSEdward Tomasz Napierala } 1157ec125fbbSEdward Tomasz Napierala if (match) 1158ec125fbbSEdward Tomasz Napierala break; 1159ec125fbbSEdward Tomasz Napierala continue; 1160ec125fbbSEdward Tomasz Napierala default: 1161ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1162ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1163ec125fbbSEdward Tomasz Napierala } 1164ec125fbbSEdward Tomasz Napierala 1165ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1166ec125fbbSEdward Tomasz Napierala } 1167ec125fbbSEdward Tomasz Napierala 1168ec125fbbSEdward Tomasz Napierala return (0); 1169ec125fbbSEdward Tomasz Napierala } 1170ec125fbbSEdward Tomasz Napierala 1171ec125fbbSEdward Tomasz Napierala static void 117215db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 117315db3c07SEdward Tomasz Napierala { 117415db3c07SEdward Tomasz Napierala 117515db3c07SEdward Tomasz Napierala rw_wlock(&rctl_lock); 117615db3c07SEdward Tomasz Napierala } 117715db3c07SEdward Tomasz Napierala 117815db3c07SEdward Tomasz Napierala static void 117915db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 118015db3c07SEdward Tomasz Napierala { 118115db3c07SEdward Tomasz Napierala 118215db3c07SEdward Tomasz Napierala rw_wunlock(&rctl_lock); 118315db3c07SEdward Tomasz Napierala } 118415db3c07SEdward Tomasz Napierala 118515db3c07SEdward Tomasz Napierala static void 1186ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1187ec125fbbSEdward Tomasz Napierala { 1188ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1189ec125fbbSEdward Tomasz Napierala int found = 0; 1190ec125fbbSEdward Tomasz Napierala 11914b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 119215db3c07SEdward Tomasz Napierala rw_assert(&rctl_lock, RA_WLOCKED); 11934b5c9cf6SEdward Tomasz Napierala 1194ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1195ec125fbbSEdward Tomasz Napierala 1196ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1197ec125fbbSEdward Tomasz Napierala } 1198ec125fbbSEdward Tomasz Napierala 1199ec125fbbSEdward Tomasz Napierala /* 1200ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1201ec125fbbSEdward Tomasz Napierala */ 1202ec125fbbSEdward Tomasz Napierala int 1203ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1204ec125fbbSEdward Tomasz Napierala { 1205ec125fbbSEdward Tomasz Napierala int found = 0; 1206ec125fbbSEdward Tomasz Napierala struct proc *p; 1207ec125fbbSEdward Tomasz Napierala 12084b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 12094b5c9cf6SEdward Tomasz Napierala 1210ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1211ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1212ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1213ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1214ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1215ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1216ec125fbbSEdward Tomasz Napierala if (found) 1217ec125fbbSEdward Tomasz Napierala return (0); 1218ec125fbbSEdward Tomasz Napierala return (ESRCH); 1219ec125fbbSEdward Tomasz Napierala } 1220ec125fbbSEdward Tomasz Napierala 122115db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, 122215db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 122315db3c07SEdward Tomasz Napierala filter, (void *)&found); 122415db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, 122515db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 122615db3c07SEdward Tomasz Napierala filter, (void *)&found); 122715db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 122815db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 122915db3c07SEdward Tomasz Napierala filter, (void *)&found); 1230ec125fbbSEdward Tomasz Napierala 1231ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1232ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1233ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1234ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1235ec125fbbSEdward Tomasz Napierala } 1236ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1237ec125fbbSEdward Tomasz Napierala 1238ec125fbbSEdward Tomasz Napierala if (found) 1239ec125fbbSEdward Tomasz Napierala return (0); 1240ec125fbbSEdward Tomasz Napierala return (ESRCH); 1241ec125fbbSEdward Tomasz Napierala } 1242ec125fbbSEdward Tomasz Napierala 1243ec125fbbSEdward Tomasz Napierala /* 1244ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1245ec125fbbSEdward Tomasz Napierala */ 1246ec125fbbSEdward Tomasz Napierala static void 1247ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1248ec125fbbSEdward Tomasz Napierala { 1249ec125fbbSEdward Tomasz Napierala int64_t amount; 1250ec125fbbSEdward Tomasz Napierala 12514b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 12524b5c9cf6SEdward Tomasz Napierala 1253ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1254ec125fbbSEdward Tomasz Napierala 1255ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1256ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1257ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1258ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1259ec125fbbSEdward Tomasz Napierala else 1260ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1261ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1262ec125fbbSEdward Tomasz Napierala break; 1263ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1264ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1265ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1266ec125fbbSEdward Tomasz Napierala else 1267ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1268ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1269ec125fbbSEdward Tomasz Napierala break; 1270ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1271415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1272ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1273ec125fbbSEdward Tomasz Napierala else 1274ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1275415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1276ec125fbbSEdward Tomasz Napierala break; 1277ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1278a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1279ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1280ec125fbbSEdward Tomasz Napierala else 1281ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1282a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1283ec125fbbSEdward Tomasz Napierala break; 1284ec125fbbSEdward Tomasz Napierala default: 1285ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1286ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1287ec125fbbSEdward Tomasz Napierala } 1288ec125fbbSEdward Tomasz Napierala 1289ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1290ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 129185a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 129285a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1293ec125fbbSEdward Tomasz Napierala 1294ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1295ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1296ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1297ec125fbbSEdward Tomasz Napierala amount); 1298ec125fbbSEdward Tomasz Napierala 1299ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1300ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1301ec125fbbSEdward Tomasz Napierala } 1302ec125fbbSEdward Tomasz Napierala 1303ec125fbbSEdward Tomasz Napierala /* 1304ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1305ec125fbbSEdward Tomasz Napierala */ 1306ec125fbbSEdward Tomasz Napierala static int 1307ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1308ec125fbbSEdward Tomasz Napierala { 1309ec125fbbSEdward Tomasz Napierala int error; 1310ec125fbbSEdward Tomasz Napierala char *str; 1311ec125fbbSEdward Tomasz Napierala 13124b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 13134b5c9cf6SEdward Tomasz Napierala 1314ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1315ec125fbbSEdward Tomasz Napierala return (EINVAL); 1316ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1317786813aaSEdward Tomasz Napierala return (E2BIG); 1318ec125fbbSEdward Tomasz Napierala 1319ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1320ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1321ec125fbbSEdward Tomasz Napierala if (error != 0) { 1322ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1323ec125fbbSEdward Tomasz Napierala return (error); 1324ec125fbbSEdward Tomasz Napierala } 1325ec125fbbSEdward Tomasz Napierala 1326ec125fbbSEdward Tomasz Napierala *inputstr = str; 1327ec125fbbSEdward Tomasz Napierala 1328ec125fbbSEdward Tomasz Napierala return (0); 1329ec125fbbSEdward Tomasz Napierala } 1330ec125fbbSEdward Tomasz Napierala 1331ec125fbbSEdward Tomasz Napierala /* 1332ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1333ec125fbbSEdward Tomasz Napierala */ 1334ec125fbbSEdward Tomasz Napierala static int 1335ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1336ec125fbbSEdward Tomasz Napierala { 1337ec125fbbSEdward Tomasz Napierala int error; 1338ec125fbbSEdward Tomasz Napierala 13394b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 13404b5c9cf6SEdward Tomasz Napierala 1341ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1342ec125fbbSEdward Tomasz Napierala return (0); 1343ec125fbbSEdward Tomasz Napierala 1344ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1345ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1346ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1347ec125fbbSEdward Tomasz Napierala return (ERANGE); 1348ec125fbbSEdward Tomasz Napierala } 1349ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1350ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1351ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1352ec125fbbSEdward Tomasz Napierala return (error); 1353ec125fbbSEdward Tomasz Napierala } 1354ec125fbbSEdward Tomasz Napierala 1355ec125fbbSEdward Tomasz Napierala static struct sbuf * 1356ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1357ec125fbbSEdward Tomasz Napierala { 1358ec125fbbSEdward Tomasz Napierala int i; 1359ec125fbbSEdward Tomasz Napierala int64_t amount; 1360ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1361ec125fbbSEdward Tomasz Napierala 13624b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 13634b5c9cf6SEdward Tomasz Napierala 1364ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1365ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 13664fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1367ec125fbbSEdward Tomasz Napierala continue; 1368ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 136985a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1370cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1371ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1372ec125fbbSEdward Tomasz Napierala } 1373ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1374ec125fbbSEdward Tomasz Napierala return (sb); 1375ec125fbbSEdward Tomasz Napierala } 1376ec125fbbSEdward Tomasz Napierala 1377ec125fbbSEdward Tomasz Napierala int 13788451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1379ec125fbbSEdward Tomasz Napierala { 1380ec125fbbSEdward Tomasz Napierala int error; 1381ec125fbbSEdward Tomasz Napierala char *inputstr; 1382ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1383ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1384ec125fbbSEdward Tomasz Napierala struct proc *p; 1385ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1386ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1387a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1388ec125fbbSEdward Tomasz Napierala 13894b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 13904b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 13914b5c9cf6SEdward Tomasz Napierala 1392415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1393ec125fbbSEdward Tomasz Napierala if (error != 0) 1394ec125fbbSEdward Tomasz Napierala return (error); 1395ec125fbbSEdward Tomasz Napierala 1396ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1397ec125fbbSEdward Tomasz Napierala if (error != 0) 1398ec125fbbSEdward Tomasz Napierala return (error); 1399ec125fbbSEdward Tomasz Napierala 1400ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1401ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1402ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1403ec125fbbSEdward Tomasz Napierala if (error != 0) { 1404ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1405ec125fbbSEdward Tomasz Napierala return (error); 1406ec125fbbSEdward Tomasz Napierala } 1407ec125fbbSEdward Tomasz Napierala 1408ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1409ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1410ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1411ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1412ec125fbbSEdward Tomasz Napierala error = EINVAL; 1413ec125fbbSEdward Tomasz Napierala goto out; 1414ec125fbbSEdward Tomasz Napierala } 1415ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1416ec125fbbSEdward Tomasz Napierala break; 1417ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1418ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1419ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1420ec125fbbSEdward Tomasz Napierala error = EINVAL; 1421ec125fbbSEdward Tomasz Napierala goto out; 1422ec125fbbSEdward Tomasz Napierala } 1423ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1424ec125fbbSEdward Tomasz Napierala break; 1425ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1426415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1427ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1428ec125fbbSEdward Tomasz Napierala error = EINVAL; 1429ec125fbbSEdward Tomasz Napierala goto out; 1430ec125fbbSEdward Tomasz Napierala } 1431ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1432ec125fbbSEdward Tomasz Napierala break; 1433ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1434a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1435a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1436ec125fbbSEdward Tomasz Napierala error = EINVAL; 1437ec125fbbSEdward Tomasz Napierala goto out; 1438ec125fbbSEdward Tomasz Napierala } 1439a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1440ec125fbbSEdward Tomasz Napierala break; 1441ec125fbbSEdward Tomasz Napierala default: 1442ec125fbbSEdward Tomasz Napierala error = EINVAL; 1443ec125fbbSEdward Tomasz Napierala } 1444ec125fbbSEdward Tomasz Napierala out: 1445ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1446ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1447ec125fbbSEdward Tomasz Napierala if (error != 0) 1448ec125fbbSEdward Tomasz Napierala return (error); 1449ec125fbbSEdward Tomasz Napierala 1450ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1451ec125fbbSEdward Tomasz Napierala 1452ec125fbbSEdward Tomasz Napierala return (error); 1453ec125fbbSEdward Tomasz Napierala } 1454ec125fbbSEdward Tomasz Napierala 1455ec125fbbSEdward Tomasz Napierala static void 1456ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1457ec125fbbSEdward Tomasz Napierala { 1458ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1459ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1460ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1461ec125fbbSEdward Tomasz Napierala 14624b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 146315db3c07SEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 14644b5c9cf6SEdward Tomasz Napierala 1465ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1466ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1467ec125fbbSEdward Tomasz Napierala continue; 1468ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1469ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1470ec125fbbSEdward Tomasz Napierala } 1471ec125fbbSEdward Tomasz Napierala } 1472ec125fbbSEdward Tomasz Napierala 1473ec125fbbSEdward Tomasz Napierala int 14748451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1475ec125fbbSEdward Tomasz Napierala { 1476ec125fbbSEdward Tomasz Napierala int error; 14772b4035eeSEdward Tomasz Napierala size_t bufsize; 1478ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1479ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1480ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1481ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1482ec125fbbSEdward Tomasz Napierala struct proc *p; 1483ec125fbbSEdward Tomasz Napierala 14844b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 14854b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 14864b5c9cf6SEdward Tomasz Napierala 1487ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1488ec125fbbSEdward Tomasz Napierala if (error != 0) 1489ec125fbbSEdward Tomasz Napierala return (error); 1490ec125fbbSEdward Tomasz Napierala 1491ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1492ec125fbbSEdward Tomasz Napierala if (error != 0) 1493ec125fbbSEdward Tomasz Napierala return (error); 1494ec125fbbSEdward Tomasz Napierala 1495ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1496ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1497ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1498ec125fbbSEdward Tomasz Napierala if (error != 0) { 1499ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1500ec125fbbSEdward Tomasz Napierala return (error); 1501ec125fbbSEdward Tomasz Napierala } 1502ec125fbbSEdward Tomasz Napierala 15032b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 15042b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 15052b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 15062b4035eeSEdward Tomasz Napierala return (E2BIG); 15072b4035eeSEdward Tomasz Napierala } 15082b4035eeSEdward Tomasz Napierala 1509ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1510ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1511ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1512ec125fbbSEdward Tomasz Napierala 1513ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1514ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1515ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1516ec125fbbSEdward Tomasz Napierala /* 1517ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1518ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1519ec125fbbSEdward Tomasz Napierala */ 1520ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1521ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1522ec125fbbSEdward Tomasz Napierala continue; 1523ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1524ec125fbbSEdward Tomasz Napierala continue; 1525ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1526ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1527ec125fbbSEdward Tomasz Napierala } 1528ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1529ec125fbbSEdward Tomasz Napierala } 1530ec125fbbSEdward Tomasz Napierala 153115db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, 153215db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 153315db3c07SEdward Tomasz Napierala filter, sb); 153415db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, 153515db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 153615db3c07SEdward Tomasz Napierala filter, sb); 153715db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 153815db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 153915db3c07SEdward Tomasz Napierala filter, sb); 1540ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 15412b4035eeSEdward Tomasz Napierala error = ERANGE; 15422b4035eeSEdward Tomasz Napierala goto out; 1543ec125fbbSEdward Tomasz Napierala } 1544ec125fbbSEdward Tomasz Napierala 1545ec125fbbSEdward Tomasz Napierala /* 1546ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1547ec125fbbSEdward Tomasz Napierala */ 1548ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1549ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1550ec125fbbSEdward Tomasz Napierala 1551ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 15522b4035eeSEdward Tomasz Napierala out: 1553ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1554ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1555ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1556ec125fbbSEdward Tomasz Napierala return (error); 1557ec125fbbSEdward Tomasz Napierala } 1558ec125fbbSEdward Tomasz Napierala 1559ec125fbbSEdward Tomasz Napierala int 15608451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1561ec125fbbSEdward Tomasz Napierala { 1562ec125fbbSEdward Tomasz Napierala int error; 15632b4035eeSEdward Tomasz Napierala size_t bufsize; 1564ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1565ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1566ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1567ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1568ec125fbbSEdward Tomasz Napierala 15694b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 15704b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 15714b5c9cf6SEdward Tomasz Napierala 1572ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1573ec125fbbSEdward Tomasz Napierala if (error != 0) 1574ec125fbbSEdward Tomasz Napierala return (error); 1575ec125fbbSEdward Tomasz Napierala 1576ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1577ec125fbbSEdward Tomasz Napierala if (error != 0) 1578ec125fbbSEdward Tomasz Napierala return (error); 1579ec125fbbSEdward Tomasz Napierala 1580ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1581ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1582ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1583ec125fbbSEdward Tomasz Napierala if (error != 0) { 1584ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1585ec125fbbSEdward Tomasz Napierala return (error); 1586ec125fbbSEdward Tomasz Napierala } 1587ec125fbbSEdward Tomasz Napierala 1588ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1589ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1590ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1591ec125fbbSEdward Tomasz Napierala return (EINVAL); 1592ec125fbbSEdward Tomasz Napierala } 1593ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1594ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1595ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1596ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1597ec125fbbSEdward Tomasz Napierala } 1598ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1599ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1600ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1601ec125fbbSEdward Tomasz Napierala return (EINVAL); 1602ec125fbbSEdward Tomasz Napierala } 1603ec125fbbSEdward Tomasz Napierala 16042b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 16052b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 16062b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 16072b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 16082b4035eeSEdward Tomasz Napierala return (E2BIG); 16092b4035eeSEdward Tomasz Napierala } 16102b4035eeSEdward Tomasz Napierala 1611ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1612ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1613ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1614ec125fbbSEdward Tomasz Napierala 1615ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1616ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1617ec125fbbSEdward Tomasz Napierala rrl_next) { 1618ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1619ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1620ec125fbbSEdward Tomasz Napierala } 1621ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1622ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 16232b4035eeSEdward Tomasz Napierala error = ERANGE; 16242b4035eeSEdward Tomasz Napierala goto out; 1625ec125fbbSEdward Tomasz Napierala } 1626ec125fbbSEdward Tomasz Napierala 1627ec125fbbSEdward Tomasz Napierala /* 1628ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1629ec125fbbSEdward Tomasz Napierala */ 1630ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1631ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1632ec125fbbSEdward Tomasz Napierala 1633ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 16342b4035eeSEdward Tomasz Napierala out: 1635ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1636ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1637ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1638ec125fbbSEdward Tomasz Napierala return (error); 1639ec125fbbSEdward Tomasz Napierala } 1640ec125fbbSEdward Tomasz Napierala 1641ec125fbbSEdward Tomasz Napierala int 16428451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1643ec125fbbSEdward Tomasz Napierala { 1644ec125fbbSEdward Tomasz Napierala int error; 1645ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1646ec125fbbSEdward Tomasz Napierala char *inputstr; 1647ec125fbbSEdward Tomasz Napierala 16484b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16494b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16504b5c9cf6SEdward Tomasz Napierala 1651ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1652ec125fbbSEdward Tomasz Napierala if (error != 0) 1653ec125fbbSEdward Tomasz Napierala return (error); 1654ec125fbbSEdward Tomasz Napierala 1655ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1656ec125fbbSEdward Tomasz Napierala if (error != 0) 1657ec125fbbSEdward Tomasz Napierala return (error); 1658ec125fbbSEdward Tomasz Napierala 1659ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1660ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1661ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1662ec125fbbSEdward Tomasz Napierala if (error != 0) { 1663ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1664ec125fbbSEdward Tomasz Napierala return (error); 1665ec125fbbSEdward Tomasz Napierala } 1666ec125fbbSEdward Tomasz Napierala /* 1667ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1668ec125fbbSEdward Tomasz Napierala */ 1669ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1670ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1671ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1672ec125fbbSEdward Tomasz Napierala 1673ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1674ec125fbbSEdward Tomasz Napierala error = EINVAL; 1675ec125fbbSEdward Tomasz Napierala goto out; 1676ec125fbbSEdward Tomasz Napierala } 1677ec125fbbSEdward Tomasz Napierala 1678ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1679ec125fbbSEdward Tomasz Napierala 1680ec125fbbSEdward Tomasz Napierala out: 1681ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1682ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1683ec125fbbSEdward Tomasz Napierala return (error); 1684ec125fbbSEdward Tomasz Napierala } 1685ec125fbbSEdward Tomasz Napierala 1686ec125fbbSEdward Tomasz Napierala int 16878451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1688ec125fbbSEdward Tomasz Napierala { 1689ec125fbbSEdward Tomasz Napierala int error; 1690ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1691ec125fbbSEdward Tomasz Napierala char *inputstr; 1692ec125fbbSEdward Tomasz Napierala 16934b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16944b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16954b5c9cf6SEdward Tomasz Napierala 1696ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1697ec125fbbSEdward Tomasz Napierala if (error != 0) 1698ec125fbbSEdward Tomasz Napierala return (error); 1699ec125fbbSEdward Tomasz Napierala 1700ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1701ec125fbbSEdward Tomasz Napierala if (error != 0) 1702ec125fbbSEdward Tomasz Napierala return (error); 1703ec125fbbSEdward Tomasz Napierala 1704ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1705ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1706ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1707ec125fbbSEdward Tomasz Napierala if (error != 0) { 1708ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1709ec125fbbSEdward Tomasz Napierala return (error); 1710ec125fbbSEdward Tomasz Napierala } 1711ec125fbbSEdward Tomasz Napierala 1712ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1713ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1714ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1715ec125fbbSEdward Tomasz Napierala 1716ec125fbbSEdward Tomasz Napierala return (error); 1717ec125fbbSEdward Tomasz Napierala } 1718ec125fbbSEdward Tomasz Napierala 1719ec125fbbSEdward Tomasz Napierala /* 1720ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1721ec125fbbSEdward Tomasz Napierala */ 1722ec125fbbSEdward Tomasz Napierala void 1723ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1724ec125fbbSEdward Tomasz Napierala { 1725ec125fbbSEdward Tomasz Napierala int rulecnt, i; 1726ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1727ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1728ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1729a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1730ec125fbbSEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1731ec125fbbSEdward Tomasz Napierala 17324b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 17334b5c9cf6SEdward Tomasz Napierala 1734ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1735ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1736a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1737ec125fbbSEdward Tomasz Napierala 1738ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1739ec125fbbSEdward Tomasz Napierala 1740ec125fbbSEdward Tomasz Napierala again: 1741ec125fbbSEdward Tomasz Napierala /* 1742ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1743ec125fbbSEdward Tomasz Napierala * credentials. 1744ec125fbbSEdward Tomasz Napierala */ 1745ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1746ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1747ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1748ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1749ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1750ec125fbbSEdward Tomasz Napierala rulecnt++; 1751ec125fbbSEdward Tomasz Napierala } 1752ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1753ec125fbbSEdward Tomasz Napierala rulecnt++; 1754ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1755ec125fbbSEdward Tomasz Napierala rulecnt++; 1756a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1757ec125fbbSEdward Tomasz Napierala rulecnt++; 1758ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1759ec125fbbSEdward Tomasz Napierala 1760ec125fbbSEdward Tomasz Napierala /* 1761ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 1762ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 1763ec125fbbSEdward Tomasz Napierala */ 1764ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 1765ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 1766ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 1767ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 1768ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 1769ec125fbbSEdward Tomasz Napierala } 1770ec125fbbSEdward Tomasz Napierala 1771ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1772ec125fbbSEdward Tomasz Napierala 1773ec125fbbSEdward Tomasz Napierala /* 1774ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 1775ec125fbbSEdward Tomasz Napierala */ 1776ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1777ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1778ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1779ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1780ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1781ec125fbbSEdward Tomasz Napierala goto goaround; 1782ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1783ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1784ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1785ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1786ec125fbbSEdward Tomasz Napierala rulecnt--; 1787ec125fbbSEdward Tomasz Napierala } 1788ec125fbbSEdward Tomasz Napierala } 1789ec125fbbSEdward Tomasz Napierala 1790ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 1791ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1792ec125fbbSEdward Tomasz Napierala goto goaround; 1793ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1794ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1795ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1796ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1797ec125fbbSEdward Tomasz Napierala rulecnt--; 1798ec125fbbSEdward Tomasz Napierala } 1799ec125fbbSEdward Tomasz Napierala 1800ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 1801ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1802ec125fbbSEdward Tomasz Napierala goto goaround; 1803ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1804ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1805ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1806ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1807ec125fbbSEdward Tomasz Napierala rulecnt--; 1808ec125fbbSEdward Tomasz Napierala } 1809ec125fbbSEdward Tomasz Napierala 1810a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 1811ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1812ec125fbbSEdward Tomasz Napierala goto goaround; 1813ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1814ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1815ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1816ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1817ec125fbbSEdward Tomasz Napierala rulecnt--; 1818ec125fbbSEdward Tomasz Napierala } 1819ec125fbbSEdward Tomasz Napierala 1820ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 1821ec125fbbSEdward Tomasz Napierala /* 1822ec125fbbSEdward Tomasz Napierala * Free the old rule list. 1823ec125fbbSEdward Tomasz Napierala */ 1824ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 1825ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 1826ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1827ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1828ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1829ec125fbbSEdward Tomasz Napierala } 1830ec125fbbSEdward Tomasz Napierala 1831ec125fbbSEdward Tomasz Napierala /* 1832ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 1833ec125fbbSEdward Tomasz Napierala * 1834ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 1835ec125fbbSEdward Tomasz Napierala * of iterating here? 1836ec125fbbSEdward Tomasz Napierala */ 1837ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1838ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1839ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1840ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 1841ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 1842ec125fbbSEdward Tomasz Napierala } 1843ec125fbbSEdward Tomasz Napierala 1844ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1845ec125fbbSEdward Tomasz Napierala 1846ec125fbbSEdward Tomasz Napierala return; 1847ec125fbbSEdward Tomasz Napierala } 1848ec125fbbSEdward Tomasz Napierala 1849ec125fbbSEdward Tomasz Napierala goaround: 1850ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1851ec125fbbSEdward Tomasz Napierala 1852ec125fbbSEdward Tomasz Napierala /* 1853ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 1854ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 1855ec125fbbSEdward Tomasz Napierala */ 1856ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1857ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1858ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1859ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 1860ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 1861ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 1862ec125fbbSEdward Tomasz Napierala } 1863ec125fbbSEdward Tomasz Napierala 1864ec125fbbSEdward Tomasz Napierala goto again; 1865ec125fbbSEdward Tomasz Napierala } 1866ec125fbbSEdward Tomasz Napierala 1867ec125fbbSEdward Tomasz Napierala /* 1868ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 1869ec125fbbSEdward Tomasz Napierala */ 1870ec125fbbSEdward Tomasz Napierala int 1871ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 1872ec125fbbSEdward Tomasz Napierala { 1873ec125fbbSEdward Tomasz Napierala int error; 1874ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1875ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1876ec125fbbSEdward Tomasz Napierala 1877ec125fbbSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 1878ec125fbbSEdward Tomasz Napierala 18794b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 18800b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 1881ec125fbbSEdward Tomasz Napierala 1882ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1883ec125fbbSEdward Tomasz Napierala 1884ec125fbbSEdward Tomasz Napierala /* 1885ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 1886ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 1887ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 1888ec125fbbSEdward Tomasz Napierala */ 1889ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 1890ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1891ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1892ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 1893ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1894ec125fbbSEdward Tomasz Napierala goto fail; 1895ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 1896ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 1897ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 1898ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1899ec125fbbSEdward Tomasz Napierala rule); 1900ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1901ec125fbbSEdward Tomasz Napierala if (error != 0) 1902ec125fbbSEdward Tomasz Napierala goto fail; 1903ec125fbbSEdward Tomasz Napierala } else { 1904ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1905ec125fbbSEdward Tomasz Napierala link->rrl_rule); 1906ec125fbbSEdward Tomasz Napierala if (error != 0) 1907ec125fbbSEdward Tomasz Napierala goto fail; 1908ec125fbbSEdward Tomasz Napierala } 1909ec125fbbSEdward Tomasz Napierala } 1910ec125fbbSEdward Tomasz Napierala 1911ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1912ec125fbbSEdward Tomasz Napierala return (0); 1913ec125fbbSEdward Tomasz Napierala 1914ec125fbbSEdward Tomasz Napierala fail: 1915ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 1916ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 1917ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1918ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1919ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1920ec125fbbSEdward Tomasz Napierala } 1921ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1922ec125fbbSEdward Tomasz Napierala return (EAGAIN); 1923ec125fbbSEdward Tomasz Napierala } 1924ec125fbbSEdward Tomasz Napierala 1925ec125fbbSEdward Tomasz Napierala /* 1926ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 1927ec125fbbSEdward Tomasz Napierala */ 1928ec125fbbSEdward Tomasz Napierala void 1929ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 1930ec125fbbSEdward Tomasz Napierala { 1931ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1932ec125fbbSEdward Tomasz Napierala 19334b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 19344b5c9cf6SEdward Tomasz Napierala 1935ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1936ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 1937ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 1938ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1939ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1940ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1941ec125fbbSEdward Tomasz Napierala } 1942ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1943ec125fbbSEdward Tomasz Napierala } 1944ec125fbbSEdward Tomasz Napierala 1945ec125fbbSEdward Tomasz Napierala static void 1946ec125fbbSEdward Tomasz Napierala rctl_init(void) 1947ec125fbbSEdward Tomasz Napierala { 1948ec125fbbSEdward Tomasz Napierala 19494b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19504b5c9cf6SEdward Tomasz Napierala return; 19514b5c9cf6SEdward Tomasz Napierala 1952ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 1953ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 1954ec125fbbSEdward Tomasz Napierala UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1955ec125fbbSEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 1956ec125fbbSEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1957ec125fbbSEdward Tomasz Napierala } 1958ec125fbbSEdward Tomasz Napierala 1959ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 1960ec125fbbSEdward Tomasz Napierala 1961ec125fbbSEdward Tomasz Napierala int 19628451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1963ec125fbbSEdward Tomasz Napierala { 1964ec125fbbSEdward Tomasz Napierala 1965ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1966ec125fbbSEdward Tomasz Napierala } 1967ec125fbbSEdward Tomasz Napierala 1968ec125fbbSEdward Tomasz Napierala int 19698451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1970ec125fbbSEdward Tomasz Napierala { 1971ec125fbbSEdward Tomasz Napierala 1972ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1973ec125fbbSEdward Tomasz Napierala } 1974ec125fbbSEdward Tomasz Napierala 1975ec125fbbSEdward Tomasz Napierala int 19768451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1977ec125fbbSEdward Tomasz Napierala { 1978ec125fbbSEdward Tomasz Napierala 1979ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1980ec125fbbSEdward Tomasz Napierala } 1981ec125fbbSEdward Tomasz Napierala 1982ec125fbbSEdward Tomasz Napierala int 19838451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1984ec125fbbSEdward Tomasz Napierala { 1985ec125fbbSEdward Tomasz Napierala 1986ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1987ec125fbbSEdward Tomasz Napierala } 1988ec125fbbSEdward Tomasz Napierala 1989ec125fbbSEdward Tomasz Napierala int 19908451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1991ec125fbbSEdward Tomasz Napierala { 1992ec125fbbSEdward Tomasz Napierala 1993ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1994ec125fbbSEdward Tomasz Napierala } 1995ec125fbbSEdward Tomasz Napierala 1996ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 1997