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; 81f70c075eSEdward Tomasz Napierala static int rctl_log_rate_limit = 10; 82f70c075eSEdward 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"); 87f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW, 88f70c075eSEdward Tomasz Napierala &rctl_log_rate_limit, 0, "Maximum number of log messages per second"); 89f70c075eSEdward Tomasz Napierala SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RW, 90f70c075eSEdward 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 184*4c230cdaSEdward Tomasz Napierala #define RCTL_RLOCK() rw_rlock(&rctl_lock) 185*4c230cdaSEdward Tomasz Napierala #define RCTL_RUNLOCK() rw_runlock(&rctl_lock) 186*4c230cdaSEdward Tomasz Napierala #define RCTL_WLOCK() rw_wlock(&rctl_lock) 187*4c230cdaSEdward Tomasz Napierala #define RCTL_WUNLOCK() rw_wunlock(&rctl_lock) 188*4c230cdaSEdward Tomasz Napierala #define RCTL_LOCK_ASSERT() rw_assert(&rctl_lock, RA_LOCKED) 189*4c230cdaSEdward Tomasz Napierala #define RCTL_WLOCK_ASSERT() rw_assert(&rctl_lock, RA_WLOCKED) 190*4c230cdaSEdward Tomasz Napierala 191ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 192ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 193ec125fbbSEdward Tomasz Napierala 194d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 195ec125fbbSEdward Tomasz Napierala 196ec125fbbSEdward Tomasz Napierala static const char * 197ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 198ec125fbbSEdward Tomasz Napierala { 199ec125fbbSEdward Tomasz Napierala int i; 200ec125fbbSEdward Tomasz Napierala 201ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 202ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 203ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 204ec125fbbSEdward Tomasz Napierala } 205ec125fbbSEdward Tomasz Napierala 206ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 207ec125fbbSEdward Tomasz Napierala } 208ec125fbbSEdward Tomasz Napierala 209ec125fbbSEdward Tomasz Napierala static const char * 210ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 211ec125fbbSEdward Tomasz Napierala { 212ec125fbbSEdward Tomasz Napierala int i; 213ec125fbbSEdward Tomasz Napierala 214ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 215ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 216ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 217ec125fbbSEdward Tomasz Napierala } 218ec125fbbSEdward Tomasz Napierala 219ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 220ec125fbbSEdward Tomasz Napierala } 221ec125fbbSEdward Tomasz Napierala 222ec125fbbSEdward Tomasz Napierala const char * 223ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 224ec125fbbSEdward Tomasz Napierala { 225ec125fbbSEdward Tomasz Napierala int i; 226ec125fbbSEdward Tomasz Napierala 227ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 228ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 229ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 230ec125fbbSEdward Tomasz Napierala } 231ec125fbbSEdward Tomasz Napierala 232ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 233ec125fbbSEdward Tomasz Napierala } 234ec125fbbSEdward Tomasz Napierala 235ac3c9819SEdward Tomasz Napierala static struct racct * 236ac3c9819SEdward Tomasz Napierala rctl_proc_rule_to_racct(const struct proc *p, const struct rctl_rule *rule) 237ac3c9819SEdward Tomasz Napierala { 238ac3c9819SEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 239ac3c9819SEdward Tomasz Napierala 240ac3c9819SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 241*4c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 242ac3c9819SEdward Tomasz Napierala 243ac3c9819SEdward Tomasz Napierala switch (rule->rr_per) { 244ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 245ac3c9819SEdward Tomasz Napierala return (p->p_racct); 246ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 247ac3c9819SEdward Tomasz Napierala return (cred->cr_ruidinfo->ui_racct); 248ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 249ac3c9819SEdward Tomasz Napierala return (cred->cr_loginclass->lc_racct); 250ac3c9819SEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 251ac3c9819SEdward Tomasz Napierala return (cred->cr_prison->pr_prison_racct->prr_racct); 252ac3c9819SEdward Tomasz Napierala default: 253ac3c9819SEdward Tomasz Napierala panic("%s: unknown per %d", __func__, rule->rr_per); 254ac3c9819SEdward Tomasz Napierala } 255ac3c9819SEdward Tomasz Napierala } 256ac3c9819SEdward Tomasz Napierala 257ec125fbbSEdward Tomasz Napierala /* 258ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 259ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 260ec125fbbSEdward Tomasz Napierala */ 261ec125fbbSEdward Tomasz Napierala static int64_t 262ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 263ec125fbbSEdward Tomasz Napierala { 264ac3c9819SEdward Tomasz Napierala int64_t available; 265ac3c9819SEdward Tomasz Napierala const struct racct *racct; 266ec125fbbSEdward Tomasz Napierala 2674b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 268*4c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 269ec125fbbSEdward Tomasz Napierala 270ac3c9819SEdward Tomasz Napierala racct = rctl_proc_rule_to_racct(p, rule); 271ac3c9819SEdward Tomasz Napierala available = rule->rr_amount - racct->r_resources[rule->rr_resource]; 272ec125fbbSEdward Tomasz Napierala 273ec125fbbSEdward Tomasz Napierala return (available); 274ec125fbbSEdward Tomasz Napierala } 275ec125fbbSEdward Tomasz Napierala 276ec125fbbSEdward Tomasz Napierala /* 277ec125fbbSEdward Tomasz Napierala * Return non-zero if allocating 'amount' by proc 'p' would exceed 278ec125fbbSEdward Tomasz Napierala * resource limit specified by 'rule'. 279ec125fbbSEdward Tomasz Napierala */ 280ec125fbbSEdward Tomasz Napierala static int 281ec125fbbSEdward Tomasz Napierala rctl_would_exceed(const struct proc *p, const struct rctl_rule *rule, 282ec125fbbSEdward Tomasz Napierala int64_t amount) 283ec125fbbSEdward Tomasz Napierala { 284ec125fbbSEdward Tomasz Napierala int64_t available; 285ec125fbbSEdward Tomasz Napierala 2864b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 287*4c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 288ec125fbbSEdward Tomasz Napierala 289ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 290ec125fbbSEdward Tomasz Napierala if (available >= amount) 291ec125fbbSEdward Tomasz Napierala return (0); 292ec125fbbSEdward Tomasz Napierala 293ec125fbbSEdward Tomasz Napierala return (1); 294ec125fbbSEdward Tomasz Napierala } 295ec125fbbSEdward Tomasz Napierala 296ec125fbbSEdward Tomasz Napierala /* 297af1a7b25SEdward Tomasz Napierala * Special version of rctl_get_available() for the %CPU resource. 29836af9869SEdward Tomasz Napierala * We slightly cheat here and return less than we normally would. 29936af9869SEdward Tomasz Napierala */ 30036af9869SEdward Tomasz Napierala int64_t 30136af9869SEdward Tomasz Napierala rctl_pcpu_available(const struct proc *p) { 30236af9869SEdward Tomasz Napierala struct rctl_rule *rule; 30336af9869SEdward Tomasz Napierala struct rctl_rule_link *link; 30436af9869SEdward Tomasz Napierala int64_t available, minavailable, limit; 30536af9869SEdward Tomasz Napierala 3064b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3074b5c9cf6SEdward Tomasz Napierala 30836af9869SEdward Tomasz Napierala minavailable = INT64_MAX; 30936af9869SEdward Tomasz Napierala limit = 0; 31036af9869SEdward Tomasz Napierala 311*4c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 31236af9869SEdward Tomasz Napierala 31336af9869SEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 31436af9869SEdward Tomasz Napierala rule = link->rrl_rule; 31536af9869SEdward Tomasz Napierala if (rule->rr_resource != RACCT_PCTCPU) 31636af9869SEdward Tomasz Napierala continue; 31736af9869SEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 31836af9869SEdward Tomasz Napierala continue; 31936af9869SEdward Tomasz Napierala available = rctl_available_resource(p, rule); 32036af9869SEdward Tomasz Napierala if (available < minavailable) { 32136af9869SEdward Tomasz Napierala minavailable = available; 32236af9869SEdward Tomasz Napierala limit = rule->rr_amount; 32336af9869SEdward Tomasz Napierala } 32436af9869SEdward Tomasz Napierala } 32536af9869SEdward Tomasz Napierala 326*4c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 32736af9869SEdward Tomasz Napierala 32836af9869SEdward Tomasz Napierala /* 32936af9869SEdward Tomasz Napierala * Return slightly less than actual value of the available 33036af9869SEdward Tomasz Napierala * %cpu resource. This makes %cpu throttling more agressive 33136af9869SEdward Tomasz Napierala * and lets us act sooner than the limits are already exceeded. 33236af9869SEdward Tomasz Napierala */ 33336af9869SEdward Tomasz Napierala if (limit != 0) { 33436af9869SEdward Tomasz Napierala if (limit > 2 * RCTL_PCPU_SHIFT) 33536af9869SEdward Tomasz Napierala minavailable -= RCTL_PCPU_SHIFT; 33636af9869SEdward Tomasz Napierala else 33736af9869SEdward Tomasz Napierala minavailable -= (limit / 2); 33836af9869SEdward Tomasz Napierala } 33936af9869SEdward Tomasz Napierala 34036af9869SEdward Tomasz Napierala return (minavailable); 34136af9869SEdward Tomasz Napierala } 34236af9869SEdward Tomasz Napierala 34336af9869SEdward Tomasz Napierala /* 344ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 345ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 346ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 347ec125fbbSEdward Tomasz Napierala */ 348ec125fbbSEdward Tomasz Napierala int 349ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 350ec125fbbSEdward Tomasz Napierala { 351f70c075eSEdward Tomasz Napierala static struct timeval log_lasttime, devctl_lasttime; 352f70c075eSEdward Tomasz Napierala static int log_curtime = 0, devctl_curtime = 0; 353ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 354ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 355ec125fbbSEdward Tomasz Napierala struct sbuf sb; 356ec125fbbSEdward Tomasz Napierala int should_deny = 0; 357ec125fbbSEdward Tomasz Napierala char *buf; 358ec125fbbSEdward Tomasz Napierala 3594b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 3604b5c9cf6SEdward Tomasz Napierala 361*4c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 362ec125fbbSEdward Tomasz Napierala 363ec125fbbSEdward Tomasz Napierala /* 364ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 365ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 366ec125fbbSEdward Tomasz Napierala */ 367ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 368ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 369ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 370ec125fbbSEdward Tomasz Napierala continue; 371ec125fbbSEdward Tomasz Napierala if (!rctl_would_exceed(p, rule, amount)) { 372ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 373ec125fbbSEdward Tomasz Napierala continue; 374ec125fbbSEdward Tomasz Napierala } 375ec125fbbSEdward Tomasz Napierala 376ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 377ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 378ec125fbbSEdward Tomasz Napierala should_deny = 1; 379ec125fbbSEdward Tomasz Napierala continue; 380ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 381ec125fbbSEdward Tomasz Napierala /* 382ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 383ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 384ec125fbbSEdward Tomasz Napierala */ 385ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 386ec125fbbSEdward Tomasz Napierala continue; 387ec125fbbSEdward Tomasz Napierala 38872a401d9SEdward Tomasz Napierala /* 38972a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 39072a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 39172a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 39272a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 39372a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 39472a401d9SEdward Tomasz Napierala */ 39572a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 39672a401d9SEdward Tomasz Napierala continue; 39772a401d9SEdward Tomasz Napierala 398f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&log_lasttime, &log_curtime, 399f70c075eSEdward Tomasz Napierala rctl_log_rate_limit)) 400ec125fbbSEdward Tomasz Napierala continue; 401ec125fbbSEdward Tomasz Napierala 402ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 403ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 404ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 405ec125fbbSEdward Tomasz Napierala continue; 406ec125fbbSEdward Tomasz Napierala } 407ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 408ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 409ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 410ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 411ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 412ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 413a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 414ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 415ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 416ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 417ec125fbbSEdward Tomasz Napierala continue; 418ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 419ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 420ec125fbbSEdward Tomasz Napierala continue; 421ec125fbbSEdward Tomasz Napierala 42272a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 42372a401d9SEdward Tomasz Napierala continue; 42472a401d9SEdward Tomasz Napierala 425f70c075eSEdward Tomasz Napierala if (!ppsratecheck(&devctl_lasttime, &devctl_curtime, 426f70c075eSEdward Tomasz Napierala rctl_devctl_rate_limit)) 427f70c075eSEdward Tomasz Napierala continue; 428f70c075eSEdward Tomasz Napierala 429ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 430ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 431ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 432ec125fbbSEdward Tomasz Napierala continue; 433ec125fbbSEdward Tomasz Napierala } 434ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 435ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 436ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 437ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 438ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 439a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 440ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 441ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 442ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 443ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 444ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 445ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 446ec125fbbSEdward Tomasz Napierala continue; 447ec125fbbSEdward Tomasz Napierala default: 448ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 449ec125fbbSEdward Tomasz Napierala continue; 450ec125fbbSEdward Tomasz Napierala 45172a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 45272a401d9SEdward Tomasz Napierala continue; 45372a401d9SEdward Tomasz Napierala 454ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 455ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 456ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 457ec125fbbSEdward Tomasz Napierala rule->rr_action)); 458ec125fbbSEdward Tomasz Napierala 459ec125fbbSEdward Tomasz Napierala /* 460ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 461ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 462ec125fbbSEdward Tomasz Napierala */ 4638451d0ddSKip Macy kern_psignal(p, rule->rr_action); 464ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 465ec125fbbSEdward Tomasz Napierala continue; 466ec125fbbSEdward Tomasz Napierala } 467ec125fbbSEdward Tomasz Napierala } 468ec125fbbSEdward Tomasz Napierala 469*4c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 470ec125fbbSEdward Tomasz Napierala 471ec125fbbSEdward Tomasz Napierala if (should_deny) { 472ec125fbbSEdward Tomasz Napierala /* 473ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 474ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 475ec125fbbSEdward Tomasz Napierala */ 476ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 477ec125fbbSEdward Tomasz Napierala } 478ec125fbbSEdward Tomasz Napierala 479ec125fbbSEdward Tomasz Napierala return (0); 480ec125fbbSEdward Tomasz Napierala } 481ec125fbbSEdward Tomasz Napierala 482ec125fbbSEdward Tomasz Napierala uint64_t 483ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 484ec125fbbSEdward Tomasz Napierala { 485ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 486ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 487ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 488ec125fbbSEdward Tomasz Napierala 4894b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 4904b5c9cf6SEdward Tomasz Napierala 491*4c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 492ec125fbbSEdward Tomasz Napierala 493ec125fbbSEdward Tomasz Napierala /* 494ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 495ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 496ec125fbbSEdward Tomasz Napierala */ 497ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 498ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 499ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 500ec125fbbSEdward Tomasz Napierala continue; 501ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 502ec125fbbSEdward Tomasz Napierala continue; 503ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 504ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 505ec125fbbSEdward Tomasz Napierala } 506ec125fbbSEdward Tomasz Napierala 507*4c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 508ec125fbbSEdward Tomasz Napierala 509ec125fbbSEdward Tomasz Napierala return (amount); 510ec125fbbSEdward Tomasz Napierala } 511ec125fbbSEdward Tomasz Napierala 512ec125fbbSEdward Tomasz Napierala uint64_t 513ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 514ec125fbbSEdward Tomasz Napierala { 515ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 516ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 517ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 518ec125fbbSEdward Tomasz Napierala 519ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 520ec125fbbSEdward Tomasz Napierala 5214b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 5224b5c9cf6SEdward Tomasz Napierala 523*4c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 524ec125fbbSEdward Tomasz Napierala 525ec125fbbSEdward Tomasz Napierala /* 526ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 527ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 528ec125fbbSEdward Tomasz Napierala */ 529ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 530ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 531ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 532ec125fbbSEdward Tomasz Napierala continue; 533ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 534ec125fbbSEdward Tomasz Napierala continue; 535ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 536ec125fbbSEdward Tomasz Napierala if (available < minavailable) 537ec125fbbSEdward Tomasz Napierala minavailable = available; 538ec125fbbSEdward Tomasz Napierala } 539ec125fbbSEdward Tomasz Napierala 540*4c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 541ec125fbbSEdward Tomasz Napierala 542ec125fbbSEdward Tomasz Napierala /* 543ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 544ec125fbbSEdward Tomasz Napierala */ 545ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 546ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 547ec125fbbSEdward Tomasz Napierala minavailable += allocated; 548ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 549ec125fbbSEdward Tomasz Napierala minavailable = 0; 550ec125fbbSEdward Tomasz Napierala return (minavailable); 551ec125fbbSEdward Tomasz Napierala } 552ec125fbbSEdward Tomasz Napierala 553ec125fbbSEdward Tomasz Napierala static int 554ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 555ec125fbbSEdward Tomasz Napierala { 556ec125fbbSEdward Tomasz Napierala 5574b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 5584b5c9cf6SEdward Tomasz Napierala 559ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 560ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 561ec125fbbSEdward Tomasz Napierala return (0); 562ec125fbbSEdward Tomasz Napierala 563ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 564ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 565ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 566ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 567ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 568ec125fbbSEdward Tomasz Napierala return (0); 569ec125fbbSEdward Tomasz Napierala break; 570ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 571ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 572ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 573ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 574ec125fbbSEdward Tomasz Napierala return (0); 575ec125fbbSEdward Tomasz Napierala break; 576ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 577415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 578415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 579415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 580ec125fbbSEdward Tomasz Napierala return (0); 581ec125fbbSEdward Tomasz Napierala break; 582ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 583a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 584a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 585a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 586ec125fbbSEdward Tomasz Napierala return (0); 587ec125fbbSEdward Tomasz Napierala break; 588ec125fbbSEdward Tomasz Napierala default: 589ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 590ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 591ec125fbbSEdward Tomasz Napierala } 592ec125fbbSEdward Tomasz Napierala } 593ec125fbbSEdward Tomasz Napierala 594ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 595ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 596ec125fbbSEdward Tomasz Napierala return (0); 597ec125fbbSEdward Tomasz Napierala } 598ec125fbbSEdward Tomasz Napierala 599ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 600ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 601ec125fbbSEdward Tomasz Napierala return (0); 602ec125fbbSEdward Tomasz Napierala } 603ec125fbbSEdward Tomasz Napierala 604ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 605ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 606ec125fbbSEdward Tomasz Napierala return (0); 607ec125fbbSEdward Tomasz Napierala } 608ec125fbbSEdward Tomasz Napierala 609ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 610ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 611ec125fbbSEdward Tomasz Napierala return (0); 612ec125fbbSEdward Tomasz Napierala } 613ec125fbbSEdward Tomasz Napierala 614ec125fbbSEdward Tomasz Napierala return (1); 615ec125fbbSEdward Tomasz Napierala } 616ec125fbbSEdward Tomasz Napierala 617ec125fbbSEdward Tomasz Napierala static int 618ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 619ec125fbbSEdward Tomasz Napierala { 620ec125fbbSEdward Tomasz Napierala int i; 621ec125fbbSEdward Tomasz Napierala 622ec125fbbSEdward Tomasz Napierala if (value == NULL) 623ec125fbbSEdward Tomasz Napierala return (EINVAL); 624ec125fbbSEdward Tomasz Napierala 625ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 626ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 627ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 628ec125fbbSEdward Tomasz Napierala return (0); 629ec125fbbSEdward Tomasz Napierala } 630ec125fbbSEdward Tomasz Napierala } 631ec125fbbSEdward Tomasz Napierala 632ec125fbbSEdward Tomasz Napierala return (EINVAL); 633ec125fbbSEdward Tomasz Napierala } 634ec125fbbSEdward Tomasz Napierala 635ec125fbbSEdward Tomasz Napierala static int 636ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 637ec125fbbSEdward Tomasz Napierala { 638ec125fbbSEdward Tomasz Napierala char *end; 639ec125fbbSEdward Tomasz Napierala 640ec125fbbSEdward Tomasz Napierala if (str == NULL) 641ec125fbbSEdward Tomasz Napierala return (EINVAL); 642ec125fbbSEdward Tomasz Napierala 643ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 644ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 645ec125fbbSEdward Tomasz Napierala return (EINVAL); 646ec125fbbSEdward Tomasz Napierala 647ec125fbbSEdward Tomasz Napierala return (0); 648ec125fbbSEdward Tomasz Napierala } 649ec125fbbSEdward Tomasz Napierala 650ec125fbbSEdward Tomasz Napierala static int 651ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 652ec125fbbSEdward Tomasz Napierala { 653ec125fbbSEdward Tomasz Napierala char *end; 654ec125fbbSEdward Tomasz Napierala 655ec125fbbSEdward Tomasz Napierala if (str == NULL) 656ec125fbbSEdward Tomasz Napierala return (EINVAL); 657ec125fbbSEdward Tomasz Napierala 658ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 659ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 660ec125fbbSEdward Tomasz Napierala return (EINVAL); 661ec125fbbSEdward Tomasz Napierala 662b450d447SEdward Tomasz Napierala if (*value < 0) 663b450d447SEdward Tomasz Napierala return (ERANGE); 664b450d447SEdward Tomasz Napierala 665ec125fbbSEdward Tomasz Napierala return (0); 666ec125fbbSEdward Tomasz Napierala } 667ec125fbbSEdward Tomasz Napierala 668ec125fbbSEdward Tomasz Napierala /* 669ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 670ec125fbbSEdward Tomasz Napierala */ 671ec125fbbSEdward Tomasz Napierala static void 672ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 673ec125fbbSEdward Tomasz Napierala { 674ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 675ec125fbbSEdward Tomasz Napierala 6764b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 677ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 678ec125fbbSEdward Tomasz Napierala 679ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 680ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 681ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 682ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 683ec125fbbSEdward Tomasz Napierala 684*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 685ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 686*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 687ec125fbbSEdward Tomasz Napierala } 688ec125fbbSEdward Tomasz Napierala 689ec125fbbSEdward Tomasz Napierala static int 690ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 691ec125fbbSEdward Tomasz Napierala { 692ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 693ec125fbbSEdward Tomasz Napierala 6944b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 695ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 696*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 697ec125fbbSEdward Tomasz Napierala 698ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 699ec125fbbSEdward Tomasz Napierala if (link == NULL) 700ec125fbbSEdward Tomasz Napierala return (ENOMEM); 701ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 702ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 703ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 704ec125fbbSEdward Tomasz Napierala 705ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 706ec125fbbSEdward Tomasz Napierala return (0); 707ec125fbbSEdward Tomasz Napierala } 708ec125fbbSEdward Tomasz Napierala 709ec125fbbSEdward Tomasz Napierala /* 710ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 711ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 712ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 713ec125fbbSEdward Tomasz Napierala */ 714ec125fbbSEdward Tomasz Napierala static int 715ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 716ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 717ec125fbbSEdward Tomasz Napierala { 718ec125fbbSEdward Tomasz Napierala int removed = 0; 719ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 720ec125fbbSEdward Tomasz Napierala 7214b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 722*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 723ec125fbbSEdward Tomasz Napierala 724ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 725ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 726ec125fbbSEdward Tomasz Napierala continue; 727ec125fbbSEdward Tomasz Napierala 728ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 729ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 730ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 731ec125fbbSEdward Tomasz Napierala removed++; 732ec125fbbSEdward Tomasz Napierala } 733ec125fbbSEdward Tomasz Napierala return (removed); 734ec125fbbSEdward Tomasz Napierala } 735ec125fbbSEdward Tomasz Napierala 736ec125fbbSEdward Tomasz Napierala static void 737ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 738ec125fbbSEdward Tomasz Napierala { 739ec125fbbSEdward Tomasz Napierala 7404b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7414b5c9cf6SEdward Tomasz Napierala 742ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 743ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 744ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 745a7ad07bfSEdward Tomasz Napierala break; 746ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 747a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 748a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 749ec125fbbSEdward Tomasz Napierala break; 750ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 751ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 752ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 753ec125fbbSEdward Tomasz Napierala break; 754ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 755415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 756415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 757ec125fbbSEdward Tomasz Napierala break; 758ec125fbbSEdward Tomasz Napierala default: 759ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 760ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 761ec125fbbSEdward Tomasz Napierala } 762ec125fbbSEdward Tomasz Napierala } 763ec125fbbSEdward Tomasz Napierala 764ec125fbbSEdward Tomasz Napierala static void 765ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 766ec125fbbSEdward Tomasz Napierala { 767ec125fbbSEdward Tomasz Napierala 7684b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7694b5c9cf6SEdward Tomasz Napierala 770ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 771ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 772ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 773a7ad07bfSEdward Tomasz Napierala break; 774ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 775a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 776a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 777ec125fbbSEdward Tomasz Napierala break; 778ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 779ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 780ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 781ec125fbbSEdward Tomasz Napierala break; 782ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 783415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 784415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 785ec125fbbSEdward Tomasz Napierala break; 786ec125fbbSEdward Tomasz Napierala default: 787ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 788ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 789ec125fbbSEdward Tomasz Napierala } 790ec125fbbSEdward Tomasz Napierala } 791ec125fbbSEdward Tomasz Napierala 792ec125fbbSEdward Tomasz Napierala struct rctl_rule * 793ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 794ec125fbbSEdward Tomasz Napierala { 795ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 796ec125fbbSEdward Tomasz Napierala 7974b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 7984b5c9cf6SEdward Tomasz Napierala 799ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 800ec125fbbSEdward Tomasz Napierala if (rule == NULL) 801ec125fbbSEdward Tomasz Napierala return (NULL); 802ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 803ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 804ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 805415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 806a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 807ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 808ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 809ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 810ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 811ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 812ec125fbbSEdward Tomasz Napierala 813ec125fbbSEdward Tomasz Napierala return (rule); 814ec125fbbSEdward Tomasz Napierala } 815ec125fbbSEdward Tomasz Napierala 816ec125fbbSEdward Tomasz Napierala struct rctl_rule * 817ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 818ec125fbbSEdward Tomasz Napierala { 819ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 820ec125fbbSEdward Tomasz Napierala 8214b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 8224b5c9cf6SEdward Tomasz Napierala 823ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 824ec125fbbSEdward Tomasz Napierala if (copy == NULL) 825ec125fbbSEdward Tomasz Napierala return (NULL); 826ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 827ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 828ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 829415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 830a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 831ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 832ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 833ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 834ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 835ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 836ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 837ec125fbbSEdward Tomasz Napierala 838ec125fbbSEdward Tomasz Napierala return (copy); 839ec125fbbSEdward Tomasz Napierala } 840ec125fbbSEdward Tomasz Napierala 841ec125fbbSEdward Tomasz Napierala void 842ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 843ec125fbbSEdward Tomasz Napierala { 844ec125fbbSEdward Tomasz Napierala 8454b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 846ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 847ec125fbbSEdward Tomasz Napierala 848ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 849ec125fbbSEdward Tomasz Napierala } 850ec125fbbSEdward Tomasz Napierala 851ec125fbbSEdward Tomasz Napierala static void 852ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 853ec125fbbSEdward Tomasz Napierala { 854ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 855ec125fbbSEdward Tomasz Napierala 856ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 857ec125fbbSEdward Tomasz Napierala 8584b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 859ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 860ec125fbbSEdward Tomasz Napierala 861ec125fbbSEdward Tomasz Napierala /* 862ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 863ec125fbbSEdward Tomasz Napierala */ 864ec125fbbSEdward Tomasz Napierala 865ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 866ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 867ec125fbbSEdward Tomasz Napierala } 868ec125fbbSEdward Tomasz Napierala 869ec125fbbSEdward Tomasz Napierala void 870ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 871ec125fbbSEdward Tomasz Napierala { 872ec125fbbSEdward Tomasz Napierala 8734b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 874ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 875ec125fbbSEdward Tomasz Napierala 876ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 877ec125fbbSEdward Tomasz Napierala /* 878ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 879ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 880ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 881ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 882ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 883ec125fbbSEdward Tomasz Napierala */ 884ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 885ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 886ec125fbbSEdward Tomasz Napierala } 887ec125fbbSEdward Tomasz Napierala } 888ec125fbbSEdward Tomasz Napierala 889ec125fbbSEdward Tomasz Napierala static int 890ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 891ec125fbbSEdward Tomasz Napierala { 892ec125fbbSEdward Tomasz Napierala 8934b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 8944b5c9cf6SEdward Tomasz Napierala 895ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 896ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 897ec125fbbSEdward Tomasz Napierala return (0); 898ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 899ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 900ec125fbbSEdward Tomasz Napierala return (0); 901ec125fbbSEdward Tomasz Napierala break; 902ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 903ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 904ec125fbbSEdward Tomasz Napierala return (0); 905ec125fbbSEdward Tomasz Napierala break; 906ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 907415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 908ec125fbbSEdward Tomasz Napierala return (0); 909ec125fbbSEdward Tomasz Napierala break; 910ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 911a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 912ec125fbbSEdward Tomasz Napierala return (0); 913ec125fbbSEdward Tomasz Napierala break; 914ec125fbbSEdward Tomasz Napierala default: 915ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 916ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 917ec125fbbSEdward Tomasz Napierala } 918ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 919ec125fbbSEdward Tomasz Napierala return (0); 920ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 921ec125fbbSEdward Tomasz Napierala return (0); 922ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 923ec125fbbSEdward Tomasz Napierala return (0); 924ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 925ec125fbbSEdward Tomasz Napierala return (0); 926ec125fbbSEdward Tomasz Napierala 927ec125fbbSEdward Tomasz Napierala return (1); 928ec125fbbSEdward Tomasz Napierala } 929ec125fbbSEdward Tomasz Napierala 930ec125fbbSEdward Tomasz Napierala static int 931ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 932ec125fbbSEdward Tomasz Napierala { 933ec125fbbSEdward Tomasz Napierala int error = 0; 934ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 935ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 936ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 937ec125fbbSEdward Tomasz Napierala id_t id; 938ec125fbbSEdward Tomasz Napierala 9394b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 9404b5c9cf6SEdward Tomasz Napierala 941ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 942ec125fbbSEdward Tomasz Napierala 943ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 944ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 945ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 946ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 947ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 948ec125fbbSEdward Tomasz Napierala perstr = rulestr; 949ec125fbbSEdward Tomasz Napierala 950ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 951ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 952ec125fbbSEdward Tomasz Napierala else { 953ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 954ec125fbbSEdward Tomasz Napierala if (error != 0) 955ec125fbbSEdward Tomasz Napierala goto out; 956ec125fbbSEdward Tomasz Napierala } 957ec125fbbSEdward Tomasz Napierala 958ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 959ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 960ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 961415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 962a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 963ec125fbbSEdward Tomasz Napierala } else { 964ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 965ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 966ec125fbbSEdward Tomasz Napierala error = EINVAL; 967ec125fbbSEdward Tomasz Napierala goto out; 968ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 969ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 970ec125fbbSEdward Tomasz Napierala if (error != 0) 971ec125fbbSEdward Tomasz Napierala goto out; 972ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 973ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 974ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 975ec125fbbSEdward Tomasz Napierala error = ESRCH; 976ec125fbbSEdward Tomasz Napierala goto out; 977ec125fbbSEdward Tomasz Napierala } 978ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 979ec125fbbSEdward Tomasz Napierala break; 980ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 981ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 982ec125fbbSEdward Tomasz Napierala if (error != 0) 983ec125fbbSEdward Tomasz Napierala goto out; 984ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 985ec125fbbSEdward Tomasz Napierala break; 986ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 987415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 988ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 989415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 990ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 991ec125fbbSEdward Tomasz Napierala goto out; 992ec125fbbSEdward Tomasz Napierala } 993ec125fbbSEdward Tomasz Napierala break; 994ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 995a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 996a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 997a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 998a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 999ec125fbbSEdward Tomasz Napierala goto out; 1000ec125fbbSEdward Tomasz Napierala } 1001ec125fbbSEdward Tomasz Napierala break; 1002ec125fbbSEdward Tomasz Napierala default: 1003ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 1004ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1005ec125fbbSEdward Tomasz Napierala } 1006ec125fbbSEdward Tomasz Napierala } 1007ec125fbbSEdward Tomasz Napierala 1008ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 1009ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 1010ec125fbbSEdward Tomasz Napierala else { 1011ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 1012ec125fbbSEdward Tomasz Napierala resourcenames); 1013ec125fbbSEdward Tomasz Napierala if (error != 0) 1014ec125fbbSEdward Tomasz Napierala goto out; 1015ec125fbbSEdward Tomasz Napierala } 1016ec125fbbSEdward Tomasz Napierala 1017ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 1018ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 1019ec125fbbSEdward Tomasz Napierala else { 1020ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 1021ec125fbbSEdward Tomasz Napierala if (error != 0) 1022ec125fbbSEdward Tomasz Napierala goto out; 1023ec125fbbSEdward Tomasz Napierala } 1024ec125fbbSEdward Tomasz Napierala 1025ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 1026ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 1027ec125fbbSEdward Tomasz Napierala else { 1028ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 1029ec125fbbSEdward Tomasz Napierala if (error != 0) 1030ec125fbbSEdward Tomasz Napierala goto out; 1031b450d447SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) { 1032b450d447SEdward Tomasz Napierala if (rule->rr_amount > INT64_MAX / 1000000) { 1033b450d447SEdward Tomasz Napierala error = ERANGE; 1034b450d447SEdward Tomasz Napierala goto out; 1035b450d447SEdward Tomasz Napierala } 1036cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 1037ec125fbbSEdward Tomasz Napierala } 1038b450d447SEdward Tomasz Napierala } 1039ec125fbbSEdward Tomasz Napierala 1040ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 1041ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 1042ec125fbbSEdward Tomasz Napierala else { 1043ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 1044ec125fbbSEdward Tomasz Napierala if (error != 0) 1045ec125fbbSEdward Tomasz Napierala goto out; 1046ec125fbbSEdward Tomasz Napierala } 1047ec125fbbSEdward Tomasz Napierala 1048ec125fbbSEdward Tomasz Napierala out: 1049ec125fbbSEdward Tomasz Napierala if (error == 0) 1050ec125fbbSEdward Tomasz Napierala *rulep = rule; 1051ec125fbbSEdward Tomasz Napierala else 1052ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1053ec125fbbSEdward Tomasz Napierala 1054ec125fbbSEdward Tomasz Napierala return (error); 1055ec125fbbSEdward Tomasz Napierala } 1056ec125fbbSEdward Tomasz Napierala 1057ec125fbbSEdward Tomasz Napierala /* 1058ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 1059ec125fbbSEdward Tomasz Napierala */ 1060ec125fbbSEdward Tomasz Napierala int 1061ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 1062ec125fbbSEdward Tomasz Napierala { 1063ec125fbbSEdward Tomasz Napierala struct proc *p; 1064ec125fbbSEdward Tomasz Napierala struct ucred *cred; 1065ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1066ec125fbbSEdward Tomasz Napierala struct prison *pr; 1067a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1068ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1069ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 1070ec125fbbSEdward Tomasz Napierala int match; 1071ec125fbbSEdward Tomasz Napierala 10724b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1073ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 1074ec125fbbSEdward Tomasz Napierala 1075ec125fbbSEdward Tomasz Napierala /* 1076ec125fbbSEdward Tomasz Napierala * Some rules just don't make sense. Note that the one below 10774fe84775SEdward Tomasz Napierala * cannot be rewritten using RACCT_IS_DENIABLE(); the RACCT_PCTCPU, 1078ec125fbbSEdward Tomasz Napierala * for example, is not deniable in the racct sense, but the 1079ec125fbbSEdward Tomasz Napierala * limit is enforced in a different way, so "deny" rules for %CPU 1080ec125fbbSEdward Tomasz Napierala * do make sense. 1081ec125fbbSEdward Tomasz Napierala */ 1082ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 1083ec125fbbSEdward Tomasz Napierala (rule->rr_resource == RACCT_CPU || 1084ec125fbbSEdward Tomasz Napierala rule->rr_resource == RACCT_WALLCLOCK)) 1085ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1086ec125fbbSEdward Tomasz Napierala 1087ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 10884fe84775SEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) 1089ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1090ec125fbbSEdward Tomasz Napierala 1091ec125fbbSEdward Tomasz Napierala /* 1092ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 1093ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 1094ec125fbbSEdward Tomasz Napierala */ 1095ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 1096ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 1097ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 1098ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 1099ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 1100ec125fbbSEdward Tomasz Napierala } else 1101ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 1102ec125fbbSEdward Tomasz Napierala 1103ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1104ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1105ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 1106ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 1107ec125fbbSEdward Tomasz Napierala 1108ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1109ec125fbbSEdward Tomasz Napierala /* 1110ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1111ec125fbbSEdward Tomasz Napierala * to do. 1112ec125fbbSEdward Tomasz Napierala */ 1113ec125fbbSEdward Tomasz Napierala return (0); 1114ec125fbbSEdward Tomasz Napierala 1115ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1116ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1117ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1118ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1119ec125fbbSEdward Tomasz Napierala break; 1120ec125fbbSEdward Tomasz Napierala 1121ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1122415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1123ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1124ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1125ec125fbbSEdward Tomasz Napierala break; 1126ec125fbbSEdward Tomasz Napierala 1127ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1128a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1129a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1130a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1131ec125fbbSEdward Tomasz Napierala break; 1132ec125fbbSEdward Tomasz Napierala 1133ec125fbbSEdward Tomasz Napierala default: 1134ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1135ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1136ec125fbbSEdward Tomasz Napierala } 1137ec125fbbSEdward Tomasz Napierala 1138ec125fbbSEdward Tomasz Napierala /* 1139ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1140ec125fbbSEdward Tomasz Napierala * it applies to. 1141ec125fbbSEdward Tomasz Napierala */ 1142ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1143ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1144ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1145ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1146ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1147ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1148ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1149ec125fbbSEdward Tomasz Napierala break; 1150ec125fbbSEdward Tomasz Napierala continue; 1151ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1152415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1153ec125fbbSEdward Tomasz Napierala break; 1154ec125fbbSEdward Tomasz Napierala continue; 1155ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1156ec125fbbSEdward Tomasz Napierala match = 0; 1157ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1158a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1159ec125fbbSEdward Tomasz Napierala match = 1; 1160ec125fbbSEdward Tomasz Napierala break; 1161ec125fbbSEdward Tomasz Napierala } 1162ec125fbbSEdward Tomasz Napierala } 1163ec125fbbSEdward Tomasz Napierala if (match) 1164ec125fbbSEdward Tomasz Napierala break; 1165ec125fbbSEdward Tomasz Napierala continue; 1166ec125fbbSEdward Tomasz Napierala default: 1167ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1168ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1169ec125fbbSEdward Tomasz Napierala } 1170ec125fbbSEdward Tomasz Napierala 1171ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1172ec125fbbSEdward Tomasz Napierala } 1173ec125fbbSEdward Tomasz Napierala 1174ec125fbbSEdward Tomasz Napierala return (0); 1175ec125fbbSEdward Tomasz Napierala } 1176ec125fbbSEdward Tomasz Napierala 1177ec125fbbSEdward Tomasz Napierala static void 117815db3c07SEdward Tomasz Napierala rctl_rule_pre_callback(void) 117915db3c07SEdward Tomasz Napierala { 118015db3c07SEdward Tomasz Napierala 1181*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 118215db3c07SEdward Tomasz Napierala } 118315db3c07SEdward Tomasz Napierala 118415db3c07SEdward Tomasz Napierala static void 118515db3c07SEdward Tomasz Napierala rctl_rule_post_callback(void) 118615db3c07SEdward Tomasz Napierala { 118715db3c07SEdward Tomasz Napierala 1188*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 118915db3c07SEdward Tomasz Napierala } 119015db3c07SEdward Tomasz Napierala 119115db3c07SEdward Tomasz Napierala static void 1192ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1193ec125fbbSEdward Tomasz Napierala { 1194ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1195ec125fbbSEdward Tomasz Napierala int found = 0; 1196ec125fbbSEdward Tomasz Napierala 11974b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1198*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK_ASSERT(); 11994b5c9cf6SEdward Tomasz Napierala 1200ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1201ec125fbbSEdward Tomasz Napierala 1202ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1203ec125fbbSEdward Tomasz Napierala } 1204ec125fbbSEdward Tomasz Napierala 1205ec125fbbSEdward Tomasz Napierala /* 1206ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1207ec125fbbSEdward Tomasz Napierala */ 1208ec125fbbSEdward Tomasz Napierala int 1209ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1210ec125fbbSEdward Tomasz Napierala { 1211ec125fbbSEdward Tomasz Napierala int found = 0; 1212ec125fbbSEdward Tomasz Napierala struct proc *p; 1213ec125fbbSEdward Tomasz Napierala 12144b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 12154b5c9cf6SEdward Tomasz Napierala 1216ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1217ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1218ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1219*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1220ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1221*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1222ec125fbbSEdward Tomasz Napierala if (found) 1223ec125fbbSEdward Tomasz Napierala return (0); 1224ec125fbbSEdward Tomasz Napierala return (ESRCH); 1225ec125fbbSEdward Tomasz Napierala } 1226ec125fbbSEdward Tomasz Napierala 122715db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, 122815db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 122915db3c07SEdward Tomasz Napierala filter, (void *)&found); 123015db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, 123115db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 123215db3c07SEdward Tomasz Napierala filter, (void *)&found); 123315db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, 123415db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 123515db3c07SEdward Tomasz Napierala filter, (void *)&found); 1236ec125fbbSEdward Tomasz Napierala 1237ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1238*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1239ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1240ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1241ec125fbbSEdward Tomasz Napierala } 1242*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1243ec125fbbSEdward Tomasz Napierala 1244ec125fbbSEdward Tomasz Napierala if (found) 1245ec125fbbSEdward Tomasz Napierala return (0); 1246ec125fbbSEdward Tomasz Napierala return (ESRCH); 1247ec125fbbSEdward Tomasz Napierala } 1248ec125fbbSEdward Tomasz Napierala 1249ec125fbbSEdward Tomasz Napierala /* 1250ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1251ec125fbbSEdward Tomasz Napierala */ 1252ec125fbbSEdward Tomasz Napierala static void 1253ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1254ec125fbbSEdward Tomasz Napierala { 1255ec125fbbSEdward Tomasz Napierala int64_t amount; 1256ec125fbbSEdward Tomasz Napierala 12574b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 12584b5c9cf6SEdward Tomasz Napierala 1259ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1260ec125fbbSEdward Tomasz Napierala 1261ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1262ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1263ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1264ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1265ec125fbbSEdward Tomasz Napierala else 1266ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1267ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1268ec125fbbSEdward Tomasz Napierala break; 1269ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1270ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1271ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1272ec125fbbSEdward Tomasz Napierala else 1273ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1274ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1275ec125fbbSEdward Tomasz Napierala break; 1276ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1277415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1278ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1279ec125fbbSEdward Tomasz Napierala else 1280ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1281415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1282ec125fbbSEdward Tomasz Napierala break; 1283ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1284a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1285ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1286ec125fbbSEdward Tomasz Napierala else 1287ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1288a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1289ec125fbbSEdward Tomasz Napierala break; 1290ec125fbbSEdward Tomasz Napierala default: 1291ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1292ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1293ec125fbbSEdward Tomasz Napierala } 1294ec125fbbSEdward Tomasz Napierala 1295ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1296ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 129785a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 129885a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1299ec125fbbSEdward Tomasz Napierala 1300ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1301ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1302ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1303ec125fbbSEdward Tomasz Napierala amount); 1304ec125fbbSEdward Tomasz Napierala 1305ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1306ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1307ec125fbbSEdward Tomasz Napierala } 1308ec125fbbSEdward Tomasz Napierala 1309ec125fbbSEdward Tomasz Napierala /* 1310ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1311ec125fbbSEdward Tomasz Napierala */ 1312ec125fbbSEdward Tomasz Napierala static int 1313ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1314ec125fbbSEdward Tomasz Napierala { 1315ec125fbbSEdward Tomasz Napierala int error; 1316ec125fbbSEdward Tomasz Napierala char *str; 1317ec125fbbSEdward Tomasz Napierala 13184b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 13194b5c9cf6SEdward Tomasz Napierala 1320ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1321ec125fbbSEdward Tomasz Napierala return (EINVAL); 1322ea228b48SEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFSIZE) 1323786813aaSEdward Tomasz Napierala return (E2BIG); 1324ec125fbbSEdward Tomasz Napierala 1325ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1326ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1327ec125fbbSEdward Tomasz Napierala if (error != 0) { 1328ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1329ec125fbbSEdward Tomasz Napierala return (error); 1330ec125fbbSEdward Tomasz Napierala } 1331ec125fbbSEdward Tomasz Napierala 1332ec125fbbSEdward Tomasz Napierala *inputstr = str; 1333ec125fbbSEdward Tomasz Napierala 1334ec125fbbSEdward Tomasz Napierala return (0); 1335ec125fbbSEdward Tomasz Napierala } 1336ec125fbbSEdward Tomasz Napierala 1337ec125fbbSEdward Tomasz Napierala /* 1338ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1339ec125fbbSEdward Tomasz Napierala */ 1340ec125fbbSEdward Tomasz Napierala static int 1341ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1342ec125fbbSEdward Tomasz Napierala { 1343ec125fbbSEdward Tomasz Napierala int error; 1344ec125fbbSEdward Tomasz Napierala 13454b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 13464b5c9cf6SEdward Tomasz Napierala 1347ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1348ec125fbbSEdward Tomasz Napierala return (0); 1349ec125fbbSEdward Tomasz Napierala 1350ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1351ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1352ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1353ec125fbbSEdward Tomasz Napierala return (ERANGE); 1354ec125fbbSEdward Tomasz Napierala } 1355ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1356ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1357ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1358ec125fbbSEdward Tomasz Napierala return (error); 1359ec125fbbSEdward Tomasz Napierala } 1360ec125fbbSEdward Tomasz Napierala 1361ec125fbbSEdward Tomasz Napierala static struct sbuf * 1362ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1363ec125fbbSEdward Tomasz Napierala { 1364ec125fbbSEdward Tomasz Napierala int i; 1365ec125fbbSEdward Tomasz Napierala int64_t amount; 1366ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1367ec125fbbSEdward Tomasz Napierala 13684b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 13694b5c9cf6SEdward Tomasz Napierala 1370ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1371ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 13724fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1373ec125fbbSEdward Tomasz Napierala continue; 1374ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 137585a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1376cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1377ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1378ec125fbbSEdward Tomasz Napierala } 1379ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1380ec125fbbSEdward Tomasz Napierala return (sb); 1381ec125fbbSEdward Tomasz Napierala } 1382ec125fbbSEdward Tomasz Napierala 1383ec125fbbSEdward Tomasz Napierala int 13848451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1385ec125fbbSEdward Tomasz Napierala { 1386ec125fbbSEdward Tomasz Napierala int error; 1387ec125fbbSEdward Tomasz Napierala char *inputstr; 1388ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1389ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1390ec125fbbSEdward Tomasz Napierala struct proc *p; 1391ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1392ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1393a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1394ec125fbbSEdward Tomasz Napierala 13954b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 13964b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 13974b5c9cf6SEdward Tomasz Napierala 1398415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1399ec125fbbSEdward Tomasz Napierala if (error != 0) 1400ec125fbbSEdward Tomasz Napierala return (error); 1401ec125fbbSEdward Tomasz Napierala 1402ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1403ec125fbbSEdward Tomasz Napierala if (error != 0) 1404ec125fbbSEdward Tomasz Napierala return (error); 1405ec125fbbSEdward Tomasz Napierala 1406ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1407ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1408ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1409ec125fbbSEdward Tomasz Napierala if (error != 0) { 1410ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1411ec125fbbSEdward Tomasz Napierala return (error); 1412ec125fbbSEdward Tomasz Napierala } 1413ec125fbbSEdward Tomasz Napierala 1414ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1415ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1416ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1417ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1418ec125fbbSEdward Tomasz Napierala error = EINVAL; 1419ec125fbbSEdward Tomasz Napierala goto out; 1420ec125fbbSEdward Tomasz Napierala } 1421ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1422ec125fbbSEdward Tomasz Napierala break; 1423ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1424ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1425ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1426ec125fbbSEdward Tomasz Napierala error = EINVAL; 1427ec125fbbSEdward Tomasz Napierala goto out; 1428ec125fbbSEdward Tomasz Napierala } 1429ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1430ec125fbbSEdward Tomasz Napierala break; 1431ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1432415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1433ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1434ec125fbbSEdward Tomasz Napierala error = EINVAL; 1435ec125fbbSEdward Tomasz Napierala goto out; 1436ec125fbbSEdward Tomasz Napierala } 1437ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1438ec125fbbSEdward Tomasz Napierala break; 1439ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1440a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1441a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1442ec125fbbSEdward Tomasz Napierala error = EINVAL; 1443ec125fbbSEdward Tomasz Napierala goto out; 1444ec125fbbSEdward Tomasz Napierala } 1445a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1446ec125fbbSEdward Tomasz Napierala break; 1447ec125fbbSEdward Tomasz Napierala default: 1448ec125fbbSEdward Tomasz Napierala error = EINVAL; 1449ec125fbbSEdward Tomasz Napierala } 1450ec125fbbSEdward Tomasz Napierala out: 1451ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1452ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1453ec125fbbSEdward Tomasz Napierala if (error != 0) 1454ec125fbbSEdward Tomasz Napierala return (error); 1455ec125fbbSEdward Tomasz Napierala 1456ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1457ec125fbbSEdward Tomasz Napierala 1458ec125fbbSEdward Tomasz Napierala return (error); 1459ec125fbbSEdward Tomasz Napierala } 1460ec125fbbSEdward Tomasz Napierala 1461ec125fbbSEdward Tomasz Napierala static void 1462ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1463ec125fbbSEdward Tomasz Napierala { 1464ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1465ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1466ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1467ec125fbbSEdward Tomasz Napierala 14684b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 1469*4c230cdaSEdward Tomasz Napierala RCTL_LOCK_ASSERT(); 14704b5c9cf6SEdward Tomasz Napierala 1471ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1472ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1473ec125fbbSEdward Tomasz Napierala continue; 1474ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1475ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1476ec125fbbSEdward Tomasz Napierala } 1477ec125fbbSEdward Tomasz Napierala } 1478ec125fbbSEdward Tomasz Napierala 1479ec125fbbSEdward Tomasz Napierala int 14808451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1481ec125fbbSEdward Tomasz Napierala { 1482ec125fbbSEdward Tomasz Napierala int error; 14832b4035eeSEdward Tomasz Napierala size_t bufsize; 1484ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1485ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1486ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1487ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1488ec125fbbSEdward Tomasz Napierala struct proc *p; 1489ec125fbbSEdward Tomasz Napierala 14904b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 14914b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 14924b5c9cf6SEdward Tomasz Napierala 1493ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1494ec125fbbSEdward Tomasz Napierala if (error != 0) 1495ec125fbbSEdward Tomasz Napierala return (error); 1496ec125fbbSEdward Tomasz Napierala 1497ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1498ec125fbbSEdward Tomasz Napierala if (error != 0) 1499ec125fbbSEdward Tomasz Napierala return (error); 1500ec125fbbSEdward Tomasz Napierala 1501ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1502ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1503ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1504ec125fbbSEdward Tomasz Napierala if (error != 0) { 1505ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1506ec125fbbSEdward Tomasz Napierala return (error); 1507ec125fbbSEdward Tomasz Napierala } 1508ec125fbbSEdward Tomasz Napierala 15092b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 15102b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 15112b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 15122b4035eeSEdward Tomasz Napierala return (E2BIG); 15132b4035eeSEdward Tomasz Napierala } 15142b4035eeSEdward Tomasz Napierala 1515ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1516ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1517ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1518ec125fbbSEdward Tomasz Napierala 1519ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1520*4c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1521ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1522ec125fbbSEdward Tomasz Napierala /* 1523ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1524ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1525ec125fbbSEdward Tomasz Napierala */ 1526ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1527ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1528ec125fbbSEdward Tomasz Napierala continue; 1529ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1530ec125fbbSEdward Tomasz Napierala continue; 1531ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1532ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1533ec125fbbSEdward Tomasz Napierala } 1534*4c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 1535ec125fbbSEdward Tomasz Napierala } 1536ec125fbbSEdward Tomasz Napierala 153715db3c07SEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, 153815db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 153915db3c07SEdward Tomasz Napierala filter, sb); 154015db3c07SEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, 154115db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 154215db3c07SEdward Tomasz Napierala filter, sb); 154315db3c07SEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, 154415db3c07SEdward Tomasz Napierala rctl_rule_pre_callback, rctl_rule_post_callback, 154515db3c07SEdward Tomasz Napierala filter, sb); 1546ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 15472b4035eeSEdward Tomasz Napierala error = ERANGE; 15482b4035eeSEdward Tomasz Napierala goto out; 1549ec125fbbSEdward Tomasz Napierala } 1550ec125fbbSEdward Tomasz Napierala 1551ec125fbbSEdward Tomasz Napierala /* 1552ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1553ec125fbbSEdward Tomasz Napierala */ 1554ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1555ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1556ec125fbbSEdward Tomasz Napierala 1557ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 15582b4035eeSEdward Tomasz Napierala out: 1559ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1560ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1561ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1562ec125fbbSEdward Tomasz Napierala return (error); 1563ec125fbbSEdward Tomasz Napierala } 1564ec125fbbSEdward Tomasz Napierala 1565ec125fbbSEdward Tomasz Napierala int 15668451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1567ec125fbbSEdward Tomasz Napierala { 1568ec125fbbSEdward Tomasz Napierala int error; 15692b4035eeSEdward Tomasz Napierala size_t bufsize; 1570ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1571ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1572ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1573ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1574ec125fbbSEdward Tomasz Napierala 15754b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 15764b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 15774b5c9cf6SEdward Tomasz Napierala 1578ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1579ec125fbbSEdward Tomasz Napierala if (error != 0) 1580ec125fbbSEdward Tomasz Napierala return (error); 1581ec125fbbSEdward Tomasz Napierala 1582ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1583ec125fbbSEdward Tomasz Napierala if (error != 0) 1584ec125fbbSEdward Tomasz Napierala return (error); 1585ec125fbbSEdward Tomasz Napierala 1586ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1587ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1588ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1589ec125fbbSEdward Tomasz Napierala if (error != 0) { 1590ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1591ec125fbbSEdward Tomasz Napierala return (error); 1592ec125fbbSEdward Tomasz Napierala } 1593ec125fbbSEdward Tomasz Napierala 1594ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1595ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1596ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1597ec125fbbSEdward Tomasz Napierala return (EINVAL); 1598ec125fbbSEdward Tomasz Napierala } 1599ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1600ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1601ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1602ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1603ec125fbbSEdward Tomasz Napierala } 1604ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1605ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1606ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1607ec125fbbSEdward Tomasz Napierala return (EINVAL); 1608ec125fbbSEdward Tomasz Napierala } 1609ec125fbbSEdward Tomasz Napierala 16102b4035eeSEdward Tomasz Napierala bufsize = uap->outbuflen; 16112b4035eeSEdward Tomasz Napierala if (bufsize > rctl_maxbufsize) { 16122b4035eeSEdward Tomasz Napierala rctl_rule_release(filter); 16132b4035eeSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 16142b4035eeSEdward Tomasz Napierala return (E2BIG); 16152b4035eeSEdward Tomasz Napierala } 16162b4035eeSEdward Tomasz Napierala 1617ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1618ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1619ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1620ec125fbbSEdward Tomasz Napierala 1621*4c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1622ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1623ec125fbbSEdward Tomasz Napierala rrl_next) { 1624ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1625ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1626ec125fbbSEdward Tomasz Napierala } 1627*4c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 1628ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 16292b4035eeSEdward Tomasz Napierala error = ERANGE; 16302b4035eeSEdward Tomasz Napierala goto out; 1631ec125fbbSEdward Tomasz Napierala } 1632ec125fbbSEdward Tomasz Napierala 1633ec125fbbSEdward Tomasz Napierala /* 1634ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1635ec125fbbSEdward Tomasz Napierala */ 1636ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1637ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1638ec125fbbSEdward Tomasz Napierala 1639ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 16402b4035eeSEdward Tomasz Napierala out: 1641ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1642ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1643ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1644ec125fbbSEdward Tomasz Napierala return (error); 1645ec125fbbSEdward Tomasz Napierala } 1646ec125fbbSEdward Tomasz Napierala 1647ec125fbbSEdward Tomasz Napierala int 16488451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1649ec125fbbSEdward Tomasz Napierala { 1650ec125fbbSEdward Tomasz Napierala int error; 1651ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1652ec125fbbSEdward Tomasz Napierala char *inputstr; 1653ec125fbbSEdward Tomasz Napierala 16544b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 16554b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 16564b5c9cf6SEdward Tomasz Napierala 1657ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1658ec125fbbSEdward Tomasz Napierala if (error != 0) 1659ec125fbbSEdward Tomasz Napierala return (error); 1660ec125fbbSEdward Tomasz Napierala 1661ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1662ec125fbbSEdward Tomasz Napierala if (error != 0) 1663ec125fbbSEdward Tomasz Napierala return (error); 1664ec125fbbSEdward Tomasz Napierala 1665ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1666ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1667ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1668ec125fbbSEdward Tomasz Napierala if (error != 0) { 1669ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1670ec125fbbSEdward Tomasz Napierala return (error); 1671ec125fbbSEdward Tomasz Napierala } 1672ec125fbbSEdward Tomasz Napierala /* 1673ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1674ec125fbbSEdward Tomasz Napierala */ 1675ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1676ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1677ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1678ec125fbbSEdward Tomasz Napierala 1679ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1680ec125fbbSEdward Tomasz Napierala error = EINVAL; 1681ec125fbbSEdward Tomasz Napierala goto out; 1682ec125fbbSEdward Tomasz Napierala } 1683ec125fbbSEdward Tomasz Napierala 1684ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1685ec125fbbSEdward Tomasz Napierala 1686ec125fbbSEdward Tomasz Napierala out: 1687ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1688ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1689ec125fbbSEdward Tomasz Napierala return (error); 1690ec125fbbSEdward Tomasz Napierala } 1691ec125fbbSEdward Tomasz Napierala 1692ec125fbbSEdward Tomasz Napierala int 16938451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1694ec125fbbSEdward Tomasz Napierala { 1695ec125fbbSEdward Tomasz Napierala int error; 1696ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1697ec125fbbSEdward Tomasz Napierala char *inputstr; 1698ec125fbbSEdward Tomasz Napierala 16994b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 17004b5c9cf6SEdward Tomasz Napierala return (ENOSYS); 17014b5c9cf6SEdward Tomasz Napierala 1702ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1703ec125fbbSEdward Tomasz Napierala if (error != 0) 1704ec125fbbSEdward Tomasz Napierala return (error); 1705ec125fbbSEdward Tomasz Napierala 1706ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1707ec125fbbSEdward Tomasz Napierala if (error != 0) 1708ec125fbbSEdward Tomasz Napierala return (error); 1709ec125fbbSEdward Tomasz Napierala 1710ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1711ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1712ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1713ec125fbbSEdward Tomasz Napierala if (error != 0) { 1714ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1715ec125fbbSEdward Tomasz Napierala return (error); 1716ec125fbbSEdward Tomasz Napierala } 1717ec125fbbSEdward Tomasz Napierala 1718ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1719ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1720ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1721ec125fbbSEdward Tomasz Napierala 1722ec125fbbSEdward Tomasz Napierala return (error); 1723ec125fbbSEdward Tomasz Napierala } 1724ec125fbbSEdward Tomasz Napierala 1725ec125fbbSEdward Tomasz Napierala /* 1726ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1727ec125fbbSEdward Tomasz Napierala */ 1728ec125fbbSEdward Tomasz Napierala void 1729ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1730ec125fbbSEdward Tomasz Napierala { 1731ec125fbbSEdward Tomasz Napierala int rulecnt, i; 1732ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1733ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1734ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1735a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1736ec125fbbSEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1737ec125fbbSEdward Tomasz Napierala 17384b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 17394b5c9cf6SEdward Tomasz Napierala 1740ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1741ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1742a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1743ec125fbbSEdward Tomasz Napierala 1744ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1745ec125fbbSEdward Tomasz Napierala 1746ec125fbbSEdward Tomasz Napierala again: 1747ec125fbbSEdward Tomasz Napierala /* 1748ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1749ec125fbbSEdward Tomasz Napierala * credentials. 1750ec125fbbSEdward Tomasz Napierala */ 1751ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1752*4c230cdaSEdward Tomasz Napierala RCTL_RLOCK(); 1753ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1754ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1755ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1756ec125fbbSEdward Tomasz Napierala rulecnt++; 1757ec125fbbSEdward Tomasz Napierala } 1758ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1759ec125fbbSEdward Tomasz Napierala rulecnt++; 1760ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1761ec125fbbSEdward Tomasz Napierala rulecnt++; 1762a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1763ec125fbbSEdward Tomasz Napierala rulecnt++; 1764*4c230cdaSEdward Tomasz Napierala RCTL_RUNLOCK(); 1765ec125fbbSEdward Tomasz Napierala 1766ec125fbbSEdward Tomasz Napierala /* 1767ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 1768ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 1769ec125fbbSEdward Tomasz Napierala */ 1770ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 1771ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 1772ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 1773ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = 0; 1774ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 1775ec125fbbSEdward Tomasz Napierala } 1776ec125fbbSEdward Tomasz Napierala 1777ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1778ec125fbbSEdward Tomasz Napierala 1779ec125fbbSEdward Tomasz Napierala /* 1780ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 1781ec125fbbSEdward Tomasz Napierala */ 1782*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1783ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1784ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1785ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1786ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1787ec125fbbSEdward Tomasz Napierala goto goaround; 1788ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1789ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1790ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1791ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1792ec125fbbSEdward Tomasz Napierala rulecnt--; 1793ec125fbbSEdward Tomasz Napierala } 1794ec125fbbSEdward Tomasz Napierala } 1795ec125fbbSEdward Tomasz Napierala 1796ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 1797ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1798ec125fbbSEdward Tomasz Napierala goto goaround; 1799ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1800ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1801ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1802ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1803ec125fbbSEdward Tomasz Napierala rulecnt--; 1804ec125fbbSEdward Tomasz Napierala } 1805ec125fbbSEdward Tomasz Napierala 1806ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 1807ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1808ec125fbbSEdward Tomasz Napierala goto goaround; 1809ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1810ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1811ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1812ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1813ec125fbbSEdward Tomasz Napierala rulecnt--; 1814ec125fbbSEdward Tomasz Napierala } 1815ec125fbbSEdward Tomasz Napierala 1816a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 1817ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1818ec125fbbSEdward Tomasz Napierala goto goaround; 1819ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1820ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1821ed810200SEdward Tomasz Napierala newlink->rrl_exceeded = link->rrl_exceeded; 1822ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1823ec125fbbSEdward Tomasz Napierala rulecnt--; 1824ec125fbbSEdward Tomasz Napierala } 1825ec125fbbSEdward Tomasz Napierala 1826ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 1827ec125fbbSEdward Tomasz Napierala /* 1828ec125fbbSEdward Tomasz Napierala * Free the old rule list. 1829ec125fbbSEdward Tomasz Napierala */ 1830ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 1831ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 1832ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1833ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1834ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1835ec125fbbSEdward Tomasz Napierala } 1836ec125fbbSEdward Tomasz Napierala 1837ec125fbbSEdward Tomasz Napierala /* 1838ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 1839ec125fbbSEdward Tomasz Napierala * 1840ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 1841ec125fbbSEdward Tomasz Napierala * of iterating here? 1842ec125fbbSEdward Tomasz Napierala */ 1843ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1844ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1845ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1846ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 1847ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 1848ec125fbbSEdward Tomasz Napierala } 1849ec125fbbSEdward Tomasz Napierala 1850*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1851ec125fbbSEdward Tomasz Napierala 1852ec125fbbSEdward Tomasz Napierala return; 1853ec125fbbSEdward Tomasz Napierala } 1854ec125fbbSEdward Tomasz Napierala 1855ec125fbbSEdward Tomasz Napierala goaround: 1856*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1857ec125fbbSEdward Tomasz Napierala 1858ec125fbbSEdward Tomasz Napierala /* 1859ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 1860ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 1861ec125fbbSEdward Tomasz Napierala */ 1862ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1863ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1864ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1865ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 1866ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 1867ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 1868ec125fbbSEdward Tomasz Napierala } 1869ec125fbbSEdward Tomasz Napierala 1870ec125fbbSEdward Tomasz Napierala goto again; 1871ec125fbbSEdward Tomasz Napierala } 1872ec125fbbSEdward Tomasz Napierala 1873ec125fbbSEdward Tomasz Napierala /* 1874ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 1875ec125fbbSEdward Tomasz Napierala */ 1876ec125fbbSEdward Tomasz Napierala int 1877ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 1878ec125fbbSEdward Tomasz Napierala { 1879ec125fbbSEdward Tomasz Napierala int error; 1880ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1881ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1882ec125fbbSEdward Tomasz Napierala 1883ec125fbbSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 1884ec125fbbSEdward Tomasz Napierala 18854b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 18860b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 1887ec125fbbSEdward Tomasz Napierala 1888*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1889ec125fbbSEdward Tomasz Napierala 1890ec125fbbSEdward Tomasz Napierala /* 1891ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 1892ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 1893ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 1894ec125fbbSEdward Tomasz Napierala */ 1895ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 1896ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1897ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1898ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 1899ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1900ec125fbbSEdward Tomasz Napierala goto fail; 1901ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 1902ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 1903ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 1904ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1905ec125fbbSEdward Tomasz Napierala rule); 1906ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1907ec125fbbSEdward Tomasz Napierala if (error != 0) 1908ec125fbbSEdward Tomasz Napierala goto fail; 1909ec125fbbSEdward Tomasz Napierala } else { 1910ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1911ec125fbbSEdward Tomasz Napierala link->rrl_rule); 1912ec125fbbSEdward Tomasz Napierala if (error != 0) 1913ec125fbbSEdward Tomasz Napierala goto fail; 1914ec125fbbSEdward Tomasz Napierala } 1915ec125fbbSEdward Tomasz Napierala } 1916ec125fbbSEdward Tomasz Napierala 1917*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1918ec125fbbSEdward Tomasz Napierala return (0); 1919ec125fbbSEdward Tomasz Napierala 1920ec125fbbSEdward Tomasz Napierala fail: 1921ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 1922ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 1923ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1924ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1925ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1926ec125fbbSEdward Tomasz Napierala } 1927*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1928ec125fbbSEdward Tomasz Napierala return (EAGAIN); 1929ec125fbbSEdward Tomasz Napierala } 1930ec125fbbSEdward Tomasz Napierala 1931ec125fbbSEdward Tomasz Napierala /* 1932ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 1933ec125fbbSEdward Tomasz Napierala */ 1934ec125fbbSEdward Tomasz Napierala void 1935ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 1936ec125fbbSEdward Tomasz Napierala { 1937ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1938ec125fbbSEdward Tomasz Napierala 19394b5c9cf6SEdward Tomasz Napierala ASSERT_RACCT_ENABLED(); 19404b5c9cf6SEdward Tomasz Napierala 1941*4c230cdaSEdward Tomasz Napierala RCTL_WLOCK(); 1942ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 1943ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 1944ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1945ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1946ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1947ec125fbbSEdward Tomasz Napierala } 1948*4c230cdaSEdward Tomasz Napierala RCTL_WUNLOCK(); 1949ec125fbbSEdward Tomasz Napierala } 1950ec125fbbSEdward Tomasz Napierala 1951ec125fbbSEdward Tomasz Napierala static void 1952ec125fbbSEdward Tomasz Napierala rctl_init(void) 1953ec125fbbSEdward Tomasz Napierala { 1954ec125fbbSEdward Tomasz Napierala 19554b5c9cf6SEdward Tomasz Napierala if (!racct_enable) 19564b5c9cf6SEdward Tomasz Napierala return; 19574b5c9cf6SEdward Tomasz Napierala 1958ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 1959ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 1960ec125fbbSEdward Tomasz Napierala UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1961ec125fbbSEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 1962ec125fbbSEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1963ec125fbbSEdward Tomasz Napierala } 1964ec125fbbSEdward Tomasz Napierala 1965ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 1966ec125fbbSEdward Tomasz Napierala 1967ec125fbbSEdward Tomasz Napierala int 19688451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1969ec125fbbSEdward Tomasz Napierala { 1970ec125fbbSEdward Tomasz Napierala 1971ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1972ec125fbbSEdward Tomasz Napierala } 1973ec125fbbSEdward Tomasz Napierala 1974ec125fbbSEdward Tomasz Napierala int 19758451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1976ec125fbbSEdward Tomasz Napierala { 1977ec125fbbSEdward Tomasz Napierala 1978ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1979ec125fbbSEdward Tomasz Napierala } 1980ec125fbbSEdward Tomasz Napierala 1981ec125fbbSEdward Tomasz Napierala int 19828451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1983ec125fbbSEdward Tomasz Napierala { 1984ec125fbbSEdward Tomasz Napierala 1985ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1986ec125fbbSEdward Tomasz Napierala } 1987ec125fbbSEdward Tomasz Napierala 1988ec125fbbSEdward Tomasz Napierala int 19898451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1990ec125fbbSEdward Tomasz Napierala { 1991ec125fbbSEdward Tomasz Napierala 1992ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1993ec125fbbSEdward Tomasz Napierala } 1994ec125fbbSEdward Tomasz Napierala 1995ec125fbbSEdward Tomasz Napierala int 19968451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1997ec125fbbSEdward Tomasz Napierala { 1998ec125fbbSEdward Tomasz Napierala 1999ec125fbbSEdward Tomasz Napierala return (ENOSYS); 2000ec125fbbSEdward Tomasz Napierala } 2001ec125fbbSEdward Tomasz Napierala 2002ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 2003