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 74ec125fbbSEdward Tomasz Napierala /* Default buffer size for rctl_get_rules(2). */ 75ec125fbbSEdward Tomasz Napierala #define RCTL_DEFAULT_BUFSIZE 4096 76786813aaSEdward Tomasz Napierala #define RCTL_MAX_INBUFLEN 4096 77ec125fbbSEdward Tomasz Napierala #define RCTL_LOG_BUFSIZE 128 78ec125fbbSEdward Tomasz Napierala 79ec125fbbSEdward Tomasz Napierala /* 80ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 81ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 82ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 83ec125fbbSEdward Tomasz Napierala */ 84ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 85ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 86ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 87ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 88ec125fbbSEdward Tomasz Napierala }; 89ec125fbbSEdward Tomasz Napierala 90ec125fbbSEdward Tomasz Napierala struct dict { 91ec125fbbSEdward Tomasz Napierala const char *d_name; 92ec125fbbSEdward Tomasz Napierala int d_value; 93ec125fbbSEdward Tomasz Napierala }; 94ec125fbbSEdward Tomasz Napierala 95ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 96ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 97ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 98ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 99ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 100ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 101ec125fbbSEdward Tomasz Napierala 102ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 10385a2f1b4SEdward Tomasz Napierala { "cputime", RACCT_CPU }, 10485a2f1b4SEdward Tomasz Napierala { "datasize", RACCT_DATA }, 10585a2f1b4SEdward Tomasz Napierala { "stacksize", RACCT_STACK }, 10685a2f1b4SEdward Tomasz Napierala { "coredumpsize", RACCT_CORE }, 10785a2f1b4SEdward Tomasz Napierala { "memoryuse", RACCT_RSS }, 10885a2f1b4SEdward Tomasz Napierala { "memorylocked", RACCT_MEMLOCK }, 10985a2f1b4SEdward Tomasz Napierala { "maxproc", RACCT_NPROC }, 11085a2f1b4SEdward Tomasz Napierala { "openfiles", RACCT_NOFILE }, 11185a2f1b4SEdward Tomasz Napierala { "vmemoryuse", RACCT_VMEM }, 11285a2f1b4SEdward Tomasz Napierala { "pseudoterminals", RACCT_NPTS }, 11385a2f1b4SEdward Tomasz Napierala { "swapuse", RACCT_SWAP }, 114ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 115ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 116ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 117ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 118ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 119ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 120ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 121ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 122ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 123ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 124ec125fbbSEdward Tomasz Napierala 125ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 126ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 127ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 128ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 129ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 130ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 131ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 132ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 133ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 134ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 135ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 136ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 137ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 138ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 139ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 140ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 141ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 142ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 143ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 144ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 145ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 146ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 147ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 148ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 149ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 150ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 151ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 152ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 153ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 154ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 155ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 156ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 157ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 158ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 159ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 160ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 161ec125fbbSEdward Tomasz Napierala 162ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 163ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 164ec125fbbSEdward Tomasz Napierala 165ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 166ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 167ec125fbbSEdward Tomasz Napierala static struct rwlock rctl_lock; 168ec125fbbSEdward Tomasz Napierala RW_SYSINIT(rctl_lock, &rctl_lock, "RCTL lock"); 169ec125fbbSEdward Tomasz Napierala 170ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 171ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 172ec125fbbSEdward Tomasz Napierala 173d745c852SEd Schouten static MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 174ec125fbbSEdward Tomasz Napierala 175ec125fbbSEdward Tomasz Napierala static const char * 176ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 177ec125fbbSEdward Tomasz Napierala { 178ec125fbbSEdward Tomasz Napierala int i; 179ec125fbbSEdward Tomasz Napierala 180ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 181ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 182ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 183ec125fbbSEdward Tomasz Napierala } 184ec125fbbSEdward Tomasz Napierala 185ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 186ec125fbbSEdward Tomasz Napierala } 187ec125fbbSEdward Tomasz Napierala 188ec125fbbSEdward Tomasz Napierala static const char * 189ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 190ec125fbbSEdward Tomasz Napierala { 191ec125fbbSEdward Tomasz Napierala int i; 192ec125fbbSEdward Tomasz Napierala 193ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 194ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 195ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 196ec125fbbSEdward Tomasz Napierala } 197ec125fbbSEdward Tomasz Napierala 198ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 199ec125fbbSEdward Tomasz Napierala } 200ec125fbbSEdward Tomasz Napierala 201ec125fbbSEdward Tomasz Napierala const char * 202ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 203ec125fbbSEdward Tomasz Napierala { 204ec125fbbSEdward Tomasz Napierala int i; 205ec125fbbSEdward Tomasz Napierala 206ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 207ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 208ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 209ec125fbbSEdward Tomasz Napierala } 210ec125fbbSEdward Tomasz Napierala 211ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 212ec125fbbSEdward Tomasz Napierala } 213ec125fbbSEdward Tomasz Napierala 214ec125fbbSEdward Tomasz Napierala /* 215ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 216ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 217ec125fbbSEdward Tomasz Napierala */ 218ec125fbbSEdward Tomasz Napierala static int64_t 219ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 220ec125fbbSEdward Tomasz Napierala { 221ec125fbbSEdward Tomasz Napierala int resource; 222ec125fbbSEdward Tomasz Napierala int64_t available = INT64_MAX; 223ec125fbbSEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 224ec125fbbSEdward Tomasz Napierala 225ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 226ec125fbbSEdward Tomasz Napierala 227ec125fbbSEdward Tomasz Napierala resource = rule->rr_resource; 228ec125fbbSEdward Tomasz Napierala switch (rule->rr_per) { 229ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 230ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 231ec125fbbSEdward Tomasz Napierala p->p_racct->r_resources[resource]; 232ec125fbbSEdward Tomasz Napierala break; 233ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 234ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 235ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo->ui_racct->r_resources[resource]; 236ec125fbbSEdward Tomasz Napierala break; 237ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 238ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 239ec125fbbSEdward Tomasz Napierala cred->cr_loginclass->lc_racct->r_resources[resource]; 240ec125fbbSEdward Tomasz Napierala break; 241ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 242ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 243a7ad07bfSEdward Tomasz Napierala cred->cr_prison->pr_prison_racct->prr_racct-> 244a7ad07bfSEdward Tomasz Napierala r_resources[resource]; 245ec125fbbSEdward Tomasz Napierala break; 246ec125fbbSEdward Tomasz Napierala default: 247ec125fbbSEdward Tomasz Napierala panic("rctl_compute_available: unknown per %d", 248ec125fbbSEdward Tomasz Napierala rule->rr_per); 249ec125fbbSEdward Tomasz Napierala } 250ec125fbbSEdward Tomasz Napierala 251ec125fbbSEdward Tomasz Napierala return (available); 252ec125fbbSEdward Tomasz Napierala } 253ec125fbbSEdward Tomasz Napierala 254ec125fbbSEdward Tomasz Napierala /* 255ec125fbbSEdward Tomasz Napierala * Return non-zero if allocating 'amount' by proc 'p' would exceed 256ec125fbbSEdward Tomasz Napierala * resource limit specified by 'rule'. 257ec125fbbSEdward Tomasz Napierala */ 258ec125fbbSEdward Tomasz Napierala static int 259ec125fbbSEdward Tomasz Napierala rctl_would_exceed(const struct proc *p, const struct rctl_rule *rule, 260ec125fbbSEdward Tomasz Napierala int64_t amount) 261ec125fbbSEdward Tomasz Napierala { 262ec125fbbSEdward Tomasz Napierala int64_t available; 263ec125fbbSEdward Tomasz Napierala 264ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 265ec125fbbSEdward Tomasz Napierala 266ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 267ec125fbbSEdward Tomasz Napierala if (available >= amount) 268ec125fbbSEdward Tomasz Napierala return (0); 269ec125fbbSEdward Tomasz Napierala 270ec125fbbSEdward Tomasz Napierala return (1); 271ec125fbbSEdward Tomasz Napierala } 272ec125fbbSEdward Tomasz Napierala 273ec125fbbSEdward Tomasz Napierala /* 274ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 275ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 276ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 277ec125fbbSEdward Tomasz Napierala */ 278ec125fbbSEdward Tomasz Napierala int 279ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 280ec125fbbSEdward Tomasz Napierala { 281ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 282ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 283ec125fbbSEdward Tomasz Napierala struct sbuf sb; 284ec125fbbSEdward Tomasz Napierala int should_deny = 0; 285ec125fbbSEdward Tomasz Napierala char *buf; 286ec125fbbSEdward Tomasz Napierala static int curtime = 0; 287ec125fbbSEdward Tomasz Napierala static struct timeval lasttime; 288ec125fbbSEdward Tomasz Napierala 289ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 290ec125fbbSEdward Tomasz Napierala 291ec125fbbSEdward Tomasz Napierala /* 292ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 293ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 294ec125fbbSEdward Tomasz Napierala */ 295ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 296ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 297ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 298ec125fbbSEdward Tomasz Napierala continue; 299ec125fbbSEdward Tomasz Napierala if (!rctl_would_exceed(p, rule, amount)) { 300ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 301ec125fbbSEdward Tomasz Napierala continue; 302ec125fbbSEdward Tomasz Napierala } 303ec125fbbSEdward Tomasz Napierala 304ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 305ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 306ec125fbbSEdward Tomasz Napierala should_deny = 1; 307ec125fbbSEdward Tomasz Napierala continue; 308ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 309ec125fbbSEdward Tomasz Napierala /* 310ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 311ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 312ec125fbbSEdward Tomasz Napierala */ 313ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 314ec125fbbSEdward Tomasz Napierala continue; 315ec125fbbSEdward Tomasz Napierala 31672a401d9SEdward Tomasz Napierala /* 31772a401d9SEdward Tomasz Napierala * If the process state is not fully initialized yet, 31872a401d9SEdward Tomasz Napierala * we can't access most of the required fields, e.g. 31972a401d9SEdward Tomasz Napierala * p->p_comm. This happens when called from fork1(). 32072a401d9SEdward Tomasz Napierala * Ignore this rule for now; it will be processed just 32172a401d9SEdward Tomasz Napierala * after fork, when called from racct_proc_fork_done(). 32272a401d9SEdward Tomasz Napierala */ 32372a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 32472a401d9SEdward Tomasz Napierala continue; 32572a401d9SEdward Tomasz Napierala 326ec125fbbSEdward Tomasz Napierala if (!ppsratecheck(&lasttime, &curtime, 10)) 327ec125fbbSEdward Tomasz Napierala continue; 328ec125fbbSEdward Tomasz Napierala 329ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 330ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 331ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 332ec125fbbSEdward Tomasz Napierala continue; 333ec125fbbSEdward Tomasz Napierala } 334ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 335ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 336ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 337ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 338ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 339ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 340a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 341ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 342ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 343ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 344ec125fbbSEdward Tomasz Napierala continue; 345ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 346ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 347ec125fbbSEdward Tomasz Napierala continue; 348ec125fbbSEdward Tomasz Napierala 34972a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 35072a401d9SEdward Tomasz Napierala continue; 35172a401d9SEdward Tomasz Napierala 352ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 353ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 354ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 355ec125fbbSEdward Tomasz Napierala continue; 356ec125fbbSEdward Tomasz Napierala } 357ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 358ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 359ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 360ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 361ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 362a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 363ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 364ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 365ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 366ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 367ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 368ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 369ec125fbbSEdward Tomasz Napierala continue; 370ec125fbbSEdward Tomasz Napierala default: 371ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 372ec125fbbSEdward Tomasz Napierala continue; 373ec125fbbSEdward Tomasz Napierala 37472a401d9SEdward Tomasz Napierala if (p->p_state != PRS_NORMAL) 37572a401d9SEdward Tomasz Napierala continue; 37672a401d9SEdward Tomasz Napierala 377ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 378ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 379ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 380ec125fbbSEdward Tomasz Napierala rule->rr_action)); 381ec125fbbSEdward Tomasz Napierala 382ec125fbbSEdward Tomasz Napierala /* 383ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 384ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 385ec125fbbSEdward Tomasz Napierala */ 3868451d0ddSKip Macy kern_psignal(p, rule->rr_action); 387ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 388ec125fbbSEdward Tomasz Napierala continue; 389ec125fbbSEdward Tomasz Napierala } 390ec125fbbSEdward Tomasz Napierala } 391ec125fbbSEdward Tomasz Napierala 392ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 393ec125fbbSEdward Tomasz Napierala 394ec125fbbSEdward Tomasz Napierala if (should_deny) { 395ec125fbbSEdward Tomasz Napierala /* 396ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 397ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 398ec125fbbSEdward Tomasz Napierala */ 399ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 400ec125fbbSEdward Tomasz Napierala } 401ec125fbbSEdward Tomasz Napierala 402ec125fbbSEdward Tomasz Napierala return (0); 403ec125fbbSEdward Tomasz Napierala } 404ec125fbbSEdward Tomasz Napierala 405ec125fbbSEdward Tomasz Napierala uint64_t 406ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 407ec125fbbSEdward Tomasz Napierala { 408ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 409ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 410ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 411ec125fbbSEdward Tomasz Napierala 412ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 413ec125fbbSEdward Tomasz Napierala 414ec125fbbSEdward Tomasz Napierala /* 415ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 416ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 417ec125fbbSEdward Tomasz Napierala */ 418ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 419ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 420ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 421ec125fbbSEdward Tomasz Napierala continue; 422ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 423ec125fbbSEdward Tomasz Napierala continue; 424ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 425ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 426ec125fbbSEdward Tomasz Napierala } 427ec125fbbSEdward Tomasz Napierala 428ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 429ec125fbbSEdward Tomasz Napierala 430ec125fbbSEdward Tomasz Napierala return (amount); 431ec125fbbSEdward Tomasz Napierala } 432ec125fbbSEdward Tomasz Napierala 433ec125fbbSEdward Tomasz Napierala uint64_t 434ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 435ec125fbbSEdward Tomasz Napierala { 436ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 437ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 438ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 439ec125fbbSEdward Tomasz Napierala 440ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 441ec125fbbSEdward Tomasz Napierala 442ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 443ec125fbbSEdward Tomasz Napierala 444ec125fbbSEdward Tomasz Napierala /* 445ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 446ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 447ec125fbbSEdward Tomasz Napierala */ 448ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 449ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 450ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 451ec125fbbSEdward Tomasz Napierala continue; 452ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 453ec125fbbSEdward Tomasz Napierala continue; 454ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 455ec125fbbSEdward Tomasz Napierala if (available < minavailable) 456ec125fbbSEdward Tomasz Napierala minavailable = available; 457ec125fbbSEdward Tomasz Napierala } 458ec125fbbSEdward Tomasz Napierala 459ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 460ec125fbbSEdward Tomasz Napierala 461ec125fbbSEdward Tomasz Napierala /* 462ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 463ec125fbbSEdward Tomasz Napierala */ 464ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 465ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 466ec125fbbSEdward Tomasz Napierala minavailable += allocated; 467ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 468ec125fbbSEdward Tomasz Napierala minavailable = 0; 469ec125fbbSEdward Tomasz Napierala return (minavailable); 470ec125fbbSEdward Tomasz Napierala } 471ec125fbbSEdward Tomasz Napierala 472ec125fbbSEdward Tomasz Napierala static int 473ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 474ec125fbbSEdward Tomasz Napierala { 475ec125fbbSEdward Tomasz Napierala 476ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 477ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 478ec125fbbSEdward Tomasz Napierala return (0); 479ec125fbbSEdward Tomasz Napierala 480ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 481ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 482ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 483ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 484ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 485ec125fbbSEdward Tomasz Napierala return (0); 486ec125fbbSEdward Tomasz Napierala break; 487ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 488ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 489ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 490ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 491ec125fbbSEdward Tomasz Napierala return (0); 492ec125fbbSEdward Tomasz Napierala break; 493ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 494415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 495415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 496415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 497ec125fbbSEdward Tomasz Napierala return (0); 498ec125fbbSEdward Tomasz Napierala break; 499ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 500a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 501a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 502a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 503ec125fbbSEdward Tomasz Napierala return (0); 504ec125fbbSEdward Tomasz Napierala break; 505ec125fbbSEdward Tomasz Napierala default: 506ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 507ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 508ec125fbbSEdward Tomasz Napierala } 509ec125fbbSEdward Tomasz Napierala } 510ec125fbbSEdward Tomasz Napierala 511ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 512ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 513ec125fbbSEdward Tomasz Napierala return (0); 514ec125fbbSEdward Tomasz Napierala } 515ec125fbbSEdward Tomasz Napierala 516ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 517ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 518ec125fbbSEdward Tomasz Napierala return (0); 519ec125fbbSEdward Tomasz Napierala } 520ec125fbbSEdward Tomasz Napierala 521ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 522ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 523ec125fbbSEdward Tomasz Napierala return (0); 524ec125fbbSEdward Tomasz Napierala } 525ec125fbbSEdward Tomasz Napierala 526ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 527ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 528ec125fbbSEdward Tomasz Napierala return (0); 529ec125fbbSEdward Tomasz Napierala } 530ec125fbbSEdward Tomasz Napierala 531ec125fbbSEdward Tomasz Napierala return (1); 532ec125fbbSEdward Tomasz Napierala } 533ec125fbbSEdward Tomasz Napierala 534ec125fbbSEdward Tomasz Napierala static int 535ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 536ec125fbbSEdward Tomasz Napierala { 537ec125fbbSEdward Tomasz Napierala int i; 538ec125fbbSEdward Tomasz Napierala 539ec125fbbSEdward Tomasz Napierala if (value == NULL) 540ec125fbbSEdward Tomasz Napierala return (EINVAL); 541ec125fbbSEdward Tomasz Napierala 542ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 543ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 544ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 545ec125fbbSEdward Tomasz Napierala return (0); 546ec125fbbSEdward Tomasz Napierala } 547ec125fbbSEdward Tomasz Napierala } 548ec125fbbSEdward Tomasz Napierala 549ec125fbbSEdward Tomasz Napierala return (EINVAL); 550ec125fbbSEdward Tomasz Napierala } 551ec125fbbSEdward Tomasz Napierala 552ec125fbbSEdward Tomasz Napierala static int 553ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 554ec125fbbSEdward Tomasz Napierala { 555ec125fbbSEdward Tomasz Napierala char *end; 556ec125fbbSEdward Tomasz Napierala 557ec125fbbSEdward Tomasz Napierala if (str == NULL) 558ec125fbbSEdward Tomasz Napierala return (EINVAL); 559ec125fbbSEdward Tomasz Napierala 560ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 561ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 562ec125fbbSEdward Tomasz Napierala return (EINVAL); 563ec125fbbSEdward Tomasz Napierala 564ec125fbbSEdward Tomasz Napierala return (0); 565ec125fbbSEdward Tomasz Napierala } 566ec125fbbSEdward Tomasz Napierala 567ec125fbbSEdward Tomasz Napierala static int 568ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_t *value) 569ec125fbbSEdward Tomasz Napierala { 570ec125fbbSEdward Tomasz Napierala char *end; 571ec125fbbSEdward Tomasz Napierala 572ec125fbbSEdward Tomasz Napierala if (str == NULL) 573ec125fbbSEdward Tomasz Napierala return (EINVAL); 574ec125fbbSEdward Tomasz Napierala 575ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 576ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 577ec125fbbSEdward Tomasz Napierala return (EINVAL); 578ec125fbbSEdward Tomasz Napierala 579ec125fbbSEdward Tomasz Napierala return (0); 580ec125fbbSEdward Tomasz Napierala } 581ec125fbbSEdward Tomasz Napierala 582ec125fbbSEdward Tomasz Napierala /* 583ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 584ec125fbbSEdward Tomasz Napierala */ 585ec125fbbSEdward Tomasz Napierala static void 586ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 587ec125fbbSEdward Tomasz Napierala { 588ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 589ec125fbbSEdward Tomasz Napierala 590ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 591ec125fbbSEdward Tomasz Napierala 592ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 593ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 594ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 595ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 596ec125fbbSEdward Tomasz Napierala 597ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 598ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 599ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 600ec125fbbSEdward Tomasz Napierala } 601ec125fbbSEdward Tomasz Napierala 602ec125fbbSEdward Tomasz Napierala static int 603ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 604ec125fbbSEdward Tomasz Napierala { 605ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 606ec125fbbSEdward Tomasz Napierala 607ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 608ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_WLOCKED); 609ec125fbbSEdward Tomasz Napierala 610ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 611ec125fbbSEdward Tomasz Napierala if (link == NULL) 612ec125fbbSEdward Tomasz Napierala return (ENOMEM); 613ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 614ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 615ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 616ec125fbbSEdward Tomasz Napierala 617ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 618ec125fbbSEdward Tomasz Napierala return (0); 619ec125fbbSEdward Tomasz Napierala } 620ec125fbbSEdward Tomasz Napierala 621ec125fbbSEdward Tomasz Napierala /* 622ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 623ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 624ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 625ec125fbbSEdward Tomasz Napierala */ 626ec125fbbSEdward Tomasz Napierala static int 627ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 628ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 629ec125fbbSEdward Tomasz Napierala { 630ec125fbbSEdward Tomasz Napierala int removed = 0; 631ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 632ec125fbbSEdward Tomasz Napierala 633ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_WLOCKED); 634ec125fbbSEdward Tomasz Napierala 635ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 636ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 637ec125fbbSEdward Tomasz Napierala continue; 638ec125fbbSEdward Tomasz Napierala 639ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 640ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 641ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 642ec125fbbSEdward Tomasz Napierala removed++; 643ec125fbbSEdward Tomasz Napierala } 644ec125fbbSEdward Tomasz Napierala return (removed); 645ec125fbbSEdward Tomasz Napierala } 646ec125fbbSEdward Tomasz Napierala 647ec125fbbSEdward Tomasz Napierala static void 648ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 649ec125fbbSEdward Tomasz Napierala { 650ec125fbbSEdward Tomasz Napierala 651ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 652ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 653ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 654a7ad07bfSEdward Tomasz Napierala break; 655ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 656a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 657a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 658ec125fbbSEdward Tomasz Napierala break; 659ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 660ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 661ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 662ec125fbbSEdward Tomasz Napierala break; 663ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 664415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 665415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 666ec125fbbSEdward Tomasz Napierala break; 667ec125fbbSEdward Tomasz Napierala default: 668ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 669ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 670ec125fbbSEdward Tomasz Napierala } 671ec125fbbSEdward Tomasz Napierala } 672ec125fbbSEdward Tomasz Napierala 673ec125fbbSEdward Tomasz Napierala static void 674ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 675ec125fbbSEdward Tomasz Napierala { 676ec125fbbSEdward Tomasz Napierala 677ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 678ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 679ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 680a7ad07bfSEdward Tomasz Napierala break; 681ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 682a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 683a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 684ec125fbbSEdward Tomasz Napierala break; 685ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 686ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 687ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 688ec125fbbSEdward Tomasz Napierala break; 689ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 690415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 691415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 692ec125fbbSEdward Tomasz Napierala break; 693ec125fbbSEdward Tomasz Napierala default: 694ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 695ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 696ec125fbbSEdward Tomasz Napierala } 697ec125fbbSEdward Tomasz Napierala } 698ec125fbbSEdward Tomasz Napierala 699ec125fbbSEdward Tomasz Napierala struct rctl_rule * 700ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 701ec125fbbSEdward Tomasz Napierala { 702ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 703ec125fbbSEdward Tomasz Napierala 704ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 705ec125fbbSEdward Tomasz Napierala if (rule == NULL) 706ec125fbbSEdward Tomasz Napierala return (NULL); 707ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 708ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 709ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 710415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 711a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 712ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 713ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 714ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 715ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 716ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 717ec125fbbSEdward Tomasz Napierala 718ec125fbbSEdward Tomasz Napierala return (rule); 719ec125fbbSEdward Tomasz Napierala } 720ec125fbbSEdward Tomasz Napierala 721ec125fbbSEdward Tomasz Napierala struct rctl_rule * 722ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 723ec125fbbSEdward Tomasz Napierala { 724ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 725ec125fbbSEdward Tomasz Napierala 726ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 727ec125fbbSEdward Tomasz Napierala if (copy == NULL) 728ec125fbbSEdward Tomasz Napierala return (NULL); 729ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 730ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 731ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 732415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 733a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 734ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 735ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 736ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 737ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 738ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 739ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 740ec125fbbSEdward Tomasz Napierala 741ec125fbbSEdward Tomasz Napierala return (copy); 742ec125fbbSEdward Tomasz Napierala } 743ec125fbbSEdward Tomasz Napierala 744ec125fbbSEdward Tomasz Napierala void 745ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 746ec125fbbSEdward Tomasz Napierala { 747ec125fbbSEdward Tomasz Napierala 748ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 749ec125fbbSEdward Tomasz Napierala 750ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 751ec125fbbSEdward Tomasz Napierala } 752ec125fbbSEdward Tomasz Napierala 753ec125fbbSEdward Tomasz Napierala static void 754ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 755ec125fbbSEdward Tomasz Napierala { 756ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 757ec125fbbSEdward Tomasz Napierala 758ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 759ec125fbbSEdward Tomasz Napierala 760ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 761ec125fbbSEdward Tomasz Napierala 762ec125fbbSEdward Tomasz Napierala /* 763ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 764ec125fbbSEdward Tomasz Napierala */ 765ec125fbbSEdward Tomasz Napierala 766ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 767ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 768ec125fbbSEdward Tomasz Napierala } 769ec125fbbSEdward Tomasz Napierala 770ec125fbbSEdward Tomasz Napierala void 771ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 772ec125fbbSEdward Tomasz Napierala { 773ec125fbbSEdward Tomasz Napierala 774ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 775ec125fbbSEdward Tomasz Napierala 776ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 777ec125fbbSEdward Tomasz Napierala /* 778ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 779ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 780ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 781ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 782ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 783ec125fbbSEdward Tomasz Napierala */ 784ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 785ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 786ec125fbbSEdward Tomasz Napierala } 787ec125fbbSEdward Tomasz Napierala } 788ec125fbbSEdward Tomasz Napierala 789ec125fbbSEdward Tomasz Napierala static int 790ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 791ec125fbbSEdward Tomasz Napierala { 792ec125fbbSEdward Tomasz Napierala 793ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 794ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 795ec125fbbSEdward Tomasz Napierala return (0); 796ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 797ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 798ec125fbbSEdward Tomasz Napierala return (0); 799ec125fbbSEdward Tomasz Napierala break; 800ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 801ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 802ec125fbbSEdward Tomasz Napierala return (0); 803ec125fbbSEdward Tomasz Napierala break; 804ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 805415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 806ec125fbbSEdward Tomasz Napierala return (0); 807ec125fbbSEdward Tomasz Napierala break; 808ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 809a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 810ec125fbbSEdward Tomasz Napierala return (0); 811ec125fbbSEdward Tomasz Napierala break; 812ec125fbbSEdward Tomasz Napierala default: 813ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 814ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 815ec125fbbSEdward Tomasz Napierala } 816ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 817ec125fbbSEdward Tomasz Napierala return (0); 818ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 819ec125fbbSEdward Tomasz Napierala return (0); 820ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 821ec125fbbSEdward Tomasz Napierala return (0); 822ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 823ec125fbbSEdward Tomasz Napierala return (0); 824ec125fbbSEdward Tomasz Napierala 825ec125fbbSEdward Tomasz Napierala return (1); 826ec125fbbSEdward Tomasz Napierala } 827ec125fbbSEdward Tomasz Napierala 828ec125fbbSEdward Tomasz Napierala static int 829ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 830ec125fbbSEdward Tomasz Napierala { 831ec125fbbSEdward Tomasz Napierala int error = 0; 832ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 833ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 834ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 835ec125fbbSEdward Tomasz Napierala id_t id; 836ec125fbbSEdward Tomasz Napierala 837ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 838ec125fbbSEdward Tomasz Napierala 839ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 840ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 841ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 842ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 843ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 844ec125fbbSEdward Tomasz Napierala perstr = rulestr; 845ec125fbbSEdward Tomasz Napierala 846ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 847ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 848ec125fbbSEdward Tomasz Napierala else { 849ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 850ec125fbbSEdward Tomasz Napierala if (error != 0) 851ec125fbbSEdward Tomasz Napierala goto out; 852ec125fbbSEdward Tomasz Napierala } 853ec125fbbSEdward Tomasz Napierala 854ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 855ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 856ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 857415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 858a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 859ec125fbbSEdward Tomasz Napierala } else { 860ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 861ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 862ec125fbbSEdward Tomasz Napierala error = EINVAL; 863ec125fbbSEdward Tomasz Napierala goto out; 864ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 865ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 866ec125fbbSEdward Tomasz Napierala if (error != 0) 867ec125fbbSEdward Tomasz Napierala goto out; 868ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 869ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 870ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 871ec125fbbSEdward Tomasz Napierala error = ESRCH; 872ec125fbbSEdward Tomasz Napierala goto out; 873ec125fbbSEdward Tomasz Napierala } 874ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 875ec125fbbSEdward Tomasz Napierala break; 876ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 877ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 878ec125fbbSEdward Tomasz Napierala if (error != 0) 879ec125fbbSEdward Tomasz Napierala goto out; 880ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 881ec125fbbSEdward Tomasz Napierala break; 882ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 883415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 884ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 885415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 886ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 887ec125fbbSEdward Tomasz Napierala goto out; 888ec125fbbSEdward Tomasz Napierala } 889ec125fbbSEdward Tomasz Napierala break; 890ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 891a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 892a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 893a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 894a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 895ec125fbbSEdward Tomasz Napierala goto out; 896ec125fbbSEdward Tomasz Napierala } 897ec125fbbSEdward Tomasz Napierala break; 898ec125fbbSEdward Tomasz Napierala default: 899ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 900ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 901ec125fbbSEdward Tomasz Napierala } 902ec125fbbSEdward Tomasz Napierala } 903ec125fbbSEdward Tomasz Napierala 904ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 905ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 906ec125fbbSEdward Tomasz Napierala else { 907ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 908ec125fbbSEdward Tomasz Napierala resourcenames); 909ec125fbbSEdward Tomasz Napierala if (error != 0) 910ec125fbbSEdward Tomasz Napierala goto out; 911ec125fbbSEdward Tomasz Napierala } 912ec125fbbSEdward Tomasz Napierala 913ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 914ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 915ec125fbbSEdward Tomasz Napierala else { 916ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 917ec125fbbSEdward Tomasz Napierala if (error != 0) 918ec125fbbSEdward Tomasz Napierala goto out; 919ec125fbbSEdward Tomasz Napierala } 920ec125fbbSEdward Tomasz Napierala 921ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 922ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 923ec125fbbSEdward Tomasz Napierala else { 924ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 925ec125fbbSEdward Tomasz Napierala if (error != 0) 926ec125fbbSEdward Tomasz Napierala goto out; 92785a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) 928cff08ec0SEdward Tomasz Napierala rule->rr_amount *= 1000000; 929ec125fbbSEdward Tomasz Napierala } 930ec125fbbSEdward Tomasz Napierala 931ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 932ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 933ec125fbbSEdward Tomasz Napierala else { 934ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 935ec125fbbSEdward Tomasz Napierala if (error != 0) 936ec125fbbSEdward Tomasz Napierala goto out; 937ec125fbbSEdward Tomasz Napierala } 938ec125fbbSEdward Tomasz Napierala 939ec125fbbSEdward Tomasz Napierala out: 940ec125fbbSEdward Tomasz Napierala if (error == 0) 941ec125fbbSEdward Tomasz Napierala *rulep = rule; 942ec125fbbSEdward Tomasz Napierala else 943ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 944ec125fbbSEdward Tomasz Napierala 945ec125fbbSEdward Tomasz Napierala return (error); 946ec125fbbSEdward Tomasz Napierala } 947ec125fbbSEdward Tomasz Napierala 948ec125fbbSEdward Tomasz Napierala /* 949ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 950ec125fbbSEdward Tomasz Napierala */ 951ec125fbbSEdward Tomasz Napierala int 952ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 953ec125fbbSEdward Tomasz Napierala { 954ec125fbbSEdward Tomasz Napierala struct proc *p; 955ec125fbbSEdward Tomasz Napierala struct ucred *cred; 956ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 957ec125fbbSEdward Tomasz Napierala struct prison *pr; 958a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 959ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 960ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 961ec125fbbSEdward Tomasz Napierala int match; 962ec125fbbSEdward Tomasz Napierala 963ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 964ec125fbbSEdward Tomasz Napierala 965ec125fbbSEdward Tomasz Napierala /* 966ec125fbbSEdward Tomasz Napierala * Some rules just don't make sense. Note that the one below 9674fe84775SEdward Tomasz Napierala * cannot be rewritten using RACCT_IS_DENIABLE(); the RACCT_PCTCPU, 968ec125fbbSEdward Tomasz Napierala * for example, is not deniable in the racct sense, but the 969ec125fbbSEdward Tomasz Napierala * limit is enforced in a different way, so "deny" rules for %CPU 970ec125fbbSEdward Tomasz Napierala * do make sense. 971ec125fbbSEdward Tomasz Napierala */ 972ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 973ec125fbbSEdward Tomasz Napierala (rule->rr_resource == RACCT_CPU || 974ec125fbbSEdward Tomasz Napierala rule->rr_resource == RACCT_WALLCLOCK)) 975ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 976ec125fbbSEdward Tomasz Napierala 977ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 9784fe84775SEdward Tomasz Napierala RACCT_IS_SLOPPY(rule->rr_resource)) 979ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 980ec125fbbSEdward Tomasz Napierala 981ec125fbbSEdward Tomasz Napierala /* 982ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 983ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 984ec125fbbSEdward Tomasz Napierala */ 985ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 986ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 987ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 988ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 989ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 990ec125fbbSEdward Tomasz Napierala } else 991ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 992ec125fbbSEdward Tomasz Napierala 993ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 994ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 995ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 996ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 997ec125fbbSEdward Tomasz Napierala 998ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 999ec125fbbSEdward Tomasz Napierala /* 1000ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 1001ec125fbbSEdward Tomasz Napierala * to do. 1002ec125fbbSEdward Tomasz Napierala */ 1003ec125fbbSEdward Tomasz Napierala return (0); 1004ec125fbbSEdward Tomasz Napierala 1005ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1006ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 1007ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 1008ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 1009ec125fbbSEdward Tomasz Napierala break; 1010ec125fbbSEdward Tomasz Napierala 1011ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1012415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1013ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1014ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1015ec125fbbSEdward Tomasz Napierala break; 1016ec125fbbSEdward Tomasz Napierala 1017ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1018a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1019a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1020a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1021ec125fbbSEdward Tomasz Napierala break; 1022ec125fbbSEdward Tomasz Napierala 1023ec125fbbSEdward Tomasz Napierala default: 1024ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1025ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1026ec125fbbSEdward Tomasz Napierala } 1027ec125fbbSEdward Tomasz Napierala 1028ec125fbbSEdward Tomasz Napierala /* 1029ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1030ec125fbbSEdward Tomasz Napierala * it applies to. 1031ec125fbbSEdward Tomasz Napierala */ 1032ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1033ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1034ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1035ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1036ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1037ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1038ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1039ec125fbbSEdward Tomasz Napierala break; 1040ec125fbbSEdward Tomasz Napierala continue; 1041ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1042415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1043ec125fbbSEdward Tomasz Napierala break; 1044ec125fbbSEdward Tomasz Napierala continue; 1045ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1046ec125fbbSEdward Tomasz Napierala match = 0; 1047ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1048a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1049ec125fbbSEdward Tomasz Napierala match = 1; 1050ec125fbbSEdward Tomasz Napierala break; 1051ec125fbbSEdward Tomasz Napierala } 1052ec125fbbSEdward Tomasz Napierala } 1053ec125fbbSEdward Tomasz Napierala if (match) 1054ec125fbbSEdward Tomasz Napierala break; 1055ec125fbbSEdward Tomasz Napierala continue; 1056ec125fbbSEdward Tomasz Napierala default: 1057ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1058ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1059ec125fbbSEdward Tomasz Napierala } 1060ec125fbbSEdward Tomasz Napierala 1061ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1062ec125fbbSEdward Tomasz Napierala } 1063ec125fbbSEdward Tomasz Napierala 1064ec125fbbSEdward Tomasz Napierala return (0); 1065ec125fbbSEdward Tomasz Napierala } 1066ec125fbbSEdward Tomasz Napierala 1067ec125fbbSEdward Tomasz Napierala static void 1068ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1069ec125fbbSEdward Tomasz Napierala { 1070ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1071ec125fbbSEdward Tomasz Napierala int found = 0; 1072ec125fbbSEdward Tomasz Napierala 1073ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1074ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1075ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1076ec125fbbSEdward Tomasz Napierala 1077ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1078ec125fbbSEdward Tomasz Napierala } 1079ec125fbbSEdward Tomasz Napierala 1080ec125fbbSEdward Tomasz Napierala /* 1081ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1082ec125fbbSEdward Tomasz Napierala */ 1083ec125fbbSEdward Tomasz Napierala int 1084ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1085ec125fbbSEdward Tomasz Napierala { 1086ec125fbbSEdward Tomasz Napierala int found = 0; 1087ec125fbbSEdward Tomasz Napierala struct proc *p; 1088ec125fbbSEdward Tomasz Napierala 1089ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1090ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1091ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1092ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1093ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1094ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1095ec125fbbSEdward Tomasz Napierala if (found) 1096ec125fbbSEdward Tomasz Napierala return (0); 1097ec125fbbSEdward Tomasz Napierala return (ESRCH); 1098ec125fbbSEdward Tomasz Napierala } 1099ec125fbbSEdward Tomasz Napierala 1100ec125fbbSEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, filter, 1101ec125fbbSEdward Tomasz Napierala (void *)&found); 1102ec125fbbSEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, filter, 1103ec125fbbSEdward Tomasz Napierala (void *)&found); 1104ec125fbbSEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, filter, 1105ec125fbbSEdward Tomasz Napierala (void *)&found); 1106ec125fbbSEdward Tomasz Napierala 1107ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1108ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1109ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1110ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1111ec125fbbSEdward Tomasz Napierala } 1112ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1113ec125fbbSEdward Tomasz Napierala 1114ec125fbbSEdward Tomasz Napierala if (found) 1115ec125fbbSEdward Tomasz Napierala return (0); 1116ec125fbbSEdward Tomasz Napierala return (ESRCH); 1117ec125fbbSEdward Tomasz Napierala } 1118ec125fbbSEdward Tomasz Napierala 1119ec125fbbSEdward Tomasz Napierala /* 1120ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1121ec125fbbSEdward Tomasz Napierala */ 1122ec125fbbSEdward Tomasz Napierala static void 1123ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1124ec125fbbSEdward Tomasz Napierala { 1125ec125fbbSEdward Tomasz Napierala int64_t amount; 1126ec125fbbSEdward Tomasz Napierala 1127ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1128ec125fbbSEdward Tomasz Napierala 1129ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1130ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1131ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1132ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1133ec125fbbSEdward Tomasz Napierala else 1134ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1135ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1136ec125fbbSEdward Tomasz Napierala break; 1137ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1138ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1139ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1140ec125fbbSEdward Tomasz Napierala else 1141ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1142ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1143ec125fbbSEdward Tomasz Napierala break; 1144ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1145415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1146ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1147ec125fbbSEdward Tomasz Napierala else 1148ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1149415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1150ec125fbbSEdward Tomasz Napierala break; 1151ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1152a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1153ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1154ec125fbbSEdward Tomasz Napierala else 1155ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1156a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1157ec125fbbSEdward Tomasz Napierala break; 1158ec125fbbSEdward Tomasz Napierala default: 1159ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1160ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1161ec125fbbSEdward Tomasz Napierala } 1162ec125fbbSEdward Tomasz Napierala 1163ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1164ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 116585a2f1b4SEdward Tomasz Napierala RACCT_IS_IN_MILLIONS(rule->rr_resource)) 116685a2f1b4SEdward Tomasz Napierala amount /= 1000000; 1167ec125fbbSEdward Tomasz Napierala 1168ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1169ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1170ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1171ec125fbbSEdward Tomasz Napierala amount); 1172ec125fbbSEdward Tomasz Napierala 1173ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1174ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1175ec125fbbSEdward Tomasz Napierala } 1176ec125fbbSEdward Tomasz Napierala 1177ec125fbbSEdward Tomasz Napierala /* 1178ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1179ec125fbbSEdward Tomasz Napierala */ 1180ec125fbbSEdward Tomasz Napierala static int 1181ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1182ec125fbbSEdward Tomasz Napierala { 1183ec125fbbSEdward Tomasz Napierala int error; 1184ec125fbbSEdward Tomasz Napierala char *str; 1185ec125fbbSEdward Tomasz Napierala 1186ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1187ec125fbbSEdward Tomasz Napierala return (EINVAL); 1188786813aaSEdward Tomasz Napierala if (inbuflen > RCTL_MAX_INBUFLEN) 1189786813aaSEdward Tomasz Napierala return (E2BIG); 1190ec125fbbSEdward Tomasz Napierala 1191ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1192ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1193ec125fbbSEdward Tomasz Napierala if (error != 0) { 1194ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1195ec125fbbSEdward Tomasz Napierala return (error); 1196ec125fbbSEdward Tomasz Napierala } 1197ec125fbbSEdward Tomasz Napierala 1198ec125fbbSEdward Tomasz Napierala *inputstr = str; 1199ec125fbbSEdward Tomasz Napierala 1200ec125fbbSEdward Tomasz Napierala return (0); 1201ec125fbbSEdward Tomasz Napierala } 1202ec125fbbSEdward Tomasz Napierala 1203ec125fbbSEdward Tomasz Napierala /* 1204ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1205ec125fbbSEdward Tomasz Napierala */ 1206ec125fbbSEdward Tomasz Napierala static int 1207ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1208ec125fbbSEdward Tomasz Napierala { 1209ec125fbbSEdward Tomasz Napierala int error; 1210ec125fbbSEdward Tomasz Napierala 1211ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1212ec125fbbSEdward Tomasz Napierala return (0); 1213ec125fbbSEdward Tomasz Napierala 1214ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1215ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1216ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1217ec125fbbSEdward Tomasz Napierala return (ERANGE); 1218ec125fbbSEdward Tomasz Napierala } 1219ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1220ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1221ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1222ec125fbbSEdward Tomasz Napierala return (error); 1223ec125fbbSEdward Tomasz Napierala } 1224ec125fbbSEdward Tomasz Napierala 1225ec125fbbSEdward Tomasz Napierala static struct sbuf * 1226ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1227ec125fbbSEdward Tomasz Napierala { 1228ec125fbbSEdward Tomasz Napierala int i; 1229ec125fbbSEdward Tomasz Napierala int64_t amount; 1230ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1231ec125fbbSEdward Tomasz Napierala 1232ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1233ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 12344fe84775SEdward Tomasz Napierala if (sloppy == 0 && RACCT_IS_SLOPPY(i)) 1235ec125fbbSEdward Tomasz Napierala continue; 1236ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 123785a2f1b4SEdward Tomasz Napierala if (RACCT_IS_IN_MILLIONS(i)) 1238cff08ec0SEdward Tomasz Napierala amount /= 1000000; 1239ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1240ec125fbbSEdward Tomasz Napierala } 1241ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1242ec125fbbSEdward Tomasz Napierala return (sb); 1243ec125fbbSEdward Tomasz Napierala } 1244ec125fbbSEdward Tomasz Napierala 1245ec125fbbSEdward Tomasz Napierala int 12468451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1247ec125fbbSEdward Tomasz Napierala { 1248ec125fbbSEdward Tomasz Napierala int error; 1249ec125fbbSEdward Tomasz Napierala char *inputstr; 1250ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1251ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1252ec125fbbSEdward Tomasz Napierala struct proc *p; 1253ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1254ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1255a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1256ec125fbbSEdward Tomasz Napierala 1257415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1258ec125fbbSEdward Tomasz Napierala if (error != 0) 1259ec125fbbSEdward Tomasz Napierala return (error); 1260ec125fbbSEdward Tomasz Napierala 1261ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1262ec125fbbSEdward Tomasz Napierala if (error != 0) 1263ec125fbbSEdward Tomasz Napierala return (error); 1264ec125fbbSEdward Tomasz Napierala 1265ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1266ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1267ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1268ec125fbbSEdward Tomasz Napierala if (error != 0) { 1269ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1270ec125fbbSEdward Tomasz Napierala return (error); 1271ec125fbbSEdward Tomasz Napierala } 1272ec125fbbSEdward Tomasz Napierala 1273ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1274ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1275ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1276ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1277ec125fbbSEdward Tomasz Napierala error = EINVAL; 1278ec125fbbSEdward Tomasz Napierala goto out; 1279ec125fbbSEdward Tomasz Napierala } 1280ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1281ec125fbbSEdward Tomasz Napierala break; 1282ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1283ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1284ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1285ec125fbbSEdward Tomasz Napierala error = EINVAL; 1286ec125fbbSEdward Tomasz Napierala goto out; 1287ec125fbbSEdward Tomasz Napierala } 1288ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1289ec125fbbSEdward Tomasz Napierala break; 1290ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1291415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1292ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1293ec125fbbSEdward Tomasz Napierala error = EINVAL; 1294ec125fbbSEdward Tomasz Napierala goto out; 1295ec125fbbSEdward Tomasz Napierala } 1296ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1297ec125fbbSEdward Tomasz Napierala break; 1298ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1299a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1300a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1301ec125fbbSEdward Tomasz Napierala error = EINVAL; 1302ec125fbbSEdward Tomasz Napierala goto out; 1303ec125fbbSEdward Tomasz Napierala } 1304a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1305ec125fbbSEdward Tomasz Napierala break; 1306ec125fbbSEdward Tomasz Napierala default: 1307ec125fbbSEdward Tomasz Napierala error = EINVAL; 1308ec125fbbSEdward Tomasz Napierala } 1309ec125fbbSEdward Tomasz Napierala out: 1310ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1311ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1312ec125fbbSEdward Tomasz Napierala if (error != 0) 1313ec125fbbSEdward Tomasz Napierala return (error); 1314ec125fbbSEdward Tomasz Napierala 1315ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1316ec125fbbSEdward Tomasz Napierala 1317ec125fbbSEdward Tomasz Napierala return (error); 1318ec125fbbSEdward Tomasz Napierala } 1319ec125fbbSEdward Tomasz Napierala 1320ec125fbbSEdward Tomasz Napierala static void 1321ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1322ec125fbbSEdward Tomasz Napierala { 1323ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1324ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1325ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1326ec125fbbSEdward Tomasz Napierala 1327ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1328ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1329ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1330ec125fbbSEdward Tomasz Napierala continue; 1331ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1332ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1333ec125fbbSEdward Tomasz Napierala } 1334ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1335ec125fbbSEdward Tomasz Napierala } 1336ec125fbbSEdward Tomasz Napierala 1337ec125fbbSEdward Tomasz Napierala int 13388451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1339ec125fbbSEdward Tomasz Napierala { 1340ec125fbbSEdward Tomasz Napierala int error; 1341ec125fbbSEdward Tomasz Napierala size_t bufsize = RCTL_DEFAULT_BUFSIZE; 1342ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1343ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1344ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1345ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1346ec125fbbSEdward Tomasz Napierala struct proc *p; 1347ec125fbbSEdward Tomasz Napierala 1348ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1349ec125fbbSEdward Tomasz Napierala if (error != 0) 1350ec125fbbSEdward Tomasz Napierala return (error); 1351ec125fbbSEdward Tomasz Napierala 1352ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1353ec125fbbSEdward Tomasz Napierala if (error != 0) 1354ec125fbbSEdward Tomasz Napierala return (error); 1355ec125fbbSEdward Tomasz Napierala 1356ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1357ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1358ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1359ec125fbbSEdward Tomasz Napierala if (error != 0) { 1360ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1361ec125fbbSEdward Tomasz Napierala return (error); 1362ec125fbbSEdward Tomasz Napierala } 1363ec125fbbSEdward Tomasz Napierala 1364ec125fbbSEdward Tomasz Napierala again: 1365ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1366ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1367ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1368ec125fbbSEdward Tomasz Napierala 1369ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1370ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1371ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1372ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1373ec125fbbSEdward Tomasz Napierala /* 1374ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1375ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1376ec125fbbSEdward Tomasz Napierala */ 1377ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1378ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1379ec125fbbSEdward Tomasz Napierala continue; 1380ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1381ec125fbbSEdward Tomasz Napierala continue; 1382ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1383ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1384ec125fbbSEdward Tomasz Napierala } 1385ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1386ec125fbbSEdward Tomasz Napierala } 1387ec125fbbSEdward Tomasz Napierala 1388ec125fbbSEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, filter, sb); 1389ec125fbbSEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, filter, sb); 1390ec125fbbSEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, filter, sb); 1391ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 1392ec125fbbSEdward Tomasz Napierala sbuf_delete(sb); 1393ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1394ec125fbbSEdward Tomasz Napierala bufsize *= 4; 1395ec125fbbSEdward Tomasz Napierala goto again; 1396ec125fbbSEdward Tomasz Napierala } 1397ec125fbbSEdward Tomasz Napierala 1398ec125fbbSEdward Tomasz Napierala /* 1399ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1400ec125fbbSEdward Tomasz Napierala */ 1401ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1402ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1403ec125fbbSEdward Tomasz Napierala 1404ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 1405ec125fbbSEdward Tomasz Napierala 1406ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1407ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1408ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1409ec125fbbSEdward Tomasz Napierala return (error); 1410ec125fbbSEdward Tomasz Napierala } 1411ec125fbbSEdward Tomasz Napierala 1412ec125fbbSEdward Tomasz Napierala int 14138451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1414ec125fbbSEdward Tomasz Napierala { 1415ec125fbbSEdward Tomasz Napierala int error; 1416ec125fbbSEdward Tomasz Napierala size_t bufsize = RCTL_DEFAULT_BUFSIZE; 1417ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1418ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1419ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1420ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1421ec125fbbSEdward Tomasz Napierala 1422ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1423ec125fbbSEdward Tomasz Napierala if (error != 0) 1424ec125fbbSEdward Tomasz Napierala return (error); 1425ec125fbbSEdward Tomasz Napierala 1426ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1427ec125fbbSEdward Tomasz Napierala if (error != 0) 1428ec125fbbSEdward Tomasz Napierala return (error); 1429ec125fbbSEdward Tomasz Napierala 1430ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1431ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1432ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1433ec125fbbSEdward Tomasz Napierala if (error != 0) { 1434ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1435ec125fbbSEdward Tomasz Napierala return (error); 1436ec125fbbSEdward Tomasz Napierala } 1437ec125fbbSEdward Tomasz Napierala 1438ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1439ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1440ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1441ec125fbbSEdward Tomasz Napierala return (EINVAL); 1442ec125fbbSEdward Tomasz Napierala } 1443ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1444ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1445ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1446ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1447ec125fbbSEdward Tomasz Napierala } 1448ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1449ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1450ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1451ec125fbbSEdward Tomasz Napierala return (EINVAL); 1452ec125fbbSEdward Tomasz Napierala } 1453ec125fbbSEdward Tomasz Napierala 1454ec125fbbSEdward Tomasz Napierala again: 1455ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1456ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1457ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1458ec125fbbSEdward Tomasz Napierala 1459ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1460ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1461ec125fbbSEdward Tomasz Napierala rrl_next) { 1462ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1463ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1464ec125fbbSEdward Tomasz Napierala } 1465ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1466ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 1467ec125fbbSEdward Tomasz Napierala sbuf_delete(sb); 1468ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1469ec125fbbSEdward Tomasz Napierala bufsize *= 4; 1470ec125fbbSEdward Tomasz Napierala goto again; 1471ec125fbbSEdward Tomasz Napierala } 1472ec125fbbSEdward Tomasz Napierala 1473ec125fbbSEdward Tomasz Napierala /* 1474ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1475ec125fbbSEdward Tomasz Napierala */ 1476ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1477ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1478ec125fbbSEdward Tomasz Napierala 1479ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 1480ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1481ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1482ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1483ec125fbbSEdward Tomasz Napierala return (error); 1484ec125fbbSEdward Tomasz Napierala } 1485ec125fbbSEdward Tomasz Napierala 1486ec125fbbSEdward Tomasz Napierala int 14878451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1488ec125fbbSEdward Tomasz Napierala { 1489ec125fbbSEdward Tomasz Napierala int error; 1490ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1491ec125fbbSEdward Tomasz Napierala char *inputstr; 1492ec125fbbSEdward Tomasz Napierala 1493ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 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, &rule); 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 /* 1509ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1510ec125fbbSEdward Tomasz Napierala */ 1511ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1512ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1513ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1514ec125fbbSEdward Tomasz Napierala 1515ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1516ec125fbbSEdward Tomasz Napierala error = EINVAL; 1517ec125fbbSEdward Tomasz Napierala goto out; 1518ec125fbbSEdward Tomasz Napierala } 1519ec125fbbSEdward Tomasz Napierala 1520ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1521ec125fbbSEdward Tomasz Napierala 1522ec125fbbSEdward Tomasz Napierala out: 1523ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1524ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1525ec125fbbSEdward Tomasz Napierala return (error); 1526ec125fbbSEdward Tomasz Napierala } 1527ec125fbbSEdward Tomasz Napierala 1528ec125fbbSEdward Tomasz Napierala int 15298451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1530ec125fbbSEdward Tomasz Napierala { 1531ec125fbbSEdward Tomasz Napierala int error; 1532ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1533ec125fbbSEdward Tomasz Napierala char *inputstr; 1534ec125fbbSEdward Tomasz Napierala 1535ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1536ec125fbbSEdward Tomasz Napierala if (error != 0) 1537ec125fbbSEdward Tomasz Napierala return (error); 1538ec125fbbSEdward Tomasz Napierala 1539ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1540ec125fbbSEdward Tomasz Napierala if (error != 0) 1541ec125fbbSEdward Tomasz Napierala return (error); 1542ec125fbbSEdward Tomasz Napierala 1543ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1544ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1545ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1546ec125fbbSEdward Tomasz Napierala if (error != 0) { 1547ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1548ec125fbbSEdward Tomasz Napierala return (error); 1549ec125fbbSEdward Tomasz Napierala } 1550ec125fbbSEdward Tomasz Napierala 1551ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1552ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1553ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1554ec125fbbSEdward Tomasz Napierala 1555ec125fbbSEdward Tomasz Napierala return (error); 1556ec125fbbSEdward Tomasz Napierala } 1557ec125fbbSEdward Tomasz Napierala 1558ec125fbbSEdward Tomasz Napierala /* 1559ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1560ec125fbbSEdward Tomasz Napierala */ 1561ec125fbbSEdward Tomasz Napierala void 1562ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1563ec125fbbSEdward Tomasz Napierala { 1564ec125fbbSEdward Tomasz Napierala int rulecnt, i; 1565ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1566ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1567ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1568a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1569ec125fbbSEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1570ec125fbbSEdward Tomasz Napierala 1571ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1572ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1573a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1574ec125fbbSEdward Tomasz Napierala 1575ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1576ec125fbbSEdward Tomasz Napierala 1577ec125fbbSEdward Tomasz Napierala again: 1578ec125fbbSEdward Tomasz Napierala /* 1579ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1580ec125fbbSEdward Tomasz Napierala * credentials. 1581ec125fbbSEdward Tomasz Napierala */ 1582ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1583ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1584ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1585ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1586ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1587ec125fbbSEdward Tomasz Napierala rulecnt++; 1588ec125fbbSEdward Tomasz Napierala } 1589ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1590ec125fbbSEdward Tomasz Napierala rulecnt++; 1591ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1592ec125fbbSEdward Tomasz Napierala rulecnt++; 1593a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1594ec125fbbSEdward Tomasz Napierala rulecnt++; 1595ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1596ec125fbbSEdward Tomasz Napierala 1597ec125fbbSEdward Tomasz Napierala /* 1598ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 1599ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 1600ec125fbbSEdward Tomasz Napierala */ 1601ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 1602ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 1603ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 1604ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 1605ec125fbbSEdward Tomasz Napierala } 1606ec125fbbSEdward Tomasz Napierala 1607ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1608ec125fbbSEdward Tomasz Napierala 1609ec125fbbSEdward Tomasz Napierala /* 1610ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 1611ec125fbbSEdward Tomasz Napierala */ 1612ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1613ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1614ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1615ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1616ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1617ec125fbbSEdward Tomasz Napierala goto goaround; 1618ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1619ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1620ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1621ec125fbbSEdward Tomasz Napierala rulecnt--; 1622ec125fbbSEdward Tomasz Napierala } 1623ec125fbbSEdward Tomasz Napierala } 1624ec125fbbSEdward Tomasz Napierala 1625ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 1626ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1627ec125fbbSEdward Tomasz Napierala goto goaround; 1628ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1629ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1630ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1631ec125fbbSEdward Tomasz Napierala rulecnt--; 1632ec125fbbSEdward Tomasz Napierala } 1633ec125fbbSEdward Tomasz Napierala 1634ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 1635ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1636ec125fbbSEdward Tomasz Napierala goto goaround; 1637ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1638ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1639ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1640ec125fbbSEdward Tomasz Napierala rulecnt--; 1641ec125fbbSEdward Tomasz Napierala } 1642ec125fbbSEdward Tomasz Napierala 1643a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 1644ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1645ec125fbbSEdward Tomasz Napierala goto goaround; 1646ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1647ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1648ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1649ec125fbbSEdward Tomasz Napierala rulecnt--; 1650ec125fbbSEdward Tomasz Napierala } 1651ec125fbbSEdward Tomasz Napierala 1652ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 1653ec125fbbSEdward Tomasz Napierala /* 1654ec125fbbSEdward Tomasz Napierala * Free the old rule list. 1655ec125fbbSEdward Tomasz Napierala */ 1656ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 1657ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 1658ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1659ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1660ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1661ec125fbbSEdward Tomasz Napierala } 1662ec125fbbSEdward Tomasz Napierala 1663ec125fbbSEdward Tomasz Napierala /* 1664ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 1665ec125fbbSEdward Tomasz Napierala * 1666ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 1667ec125fbbSEdward Tomasz Napierala * of iterating here? 1668ec125fbbSEdward Tomasz Napierala */ 1669ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1670ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1671ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1672ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 1673ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 1674ec125fbbSEdward Tomasz Napierala } 1675ec125fbbSEdward Tomasz Napierala 1676ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1677ec125fbbSEdward Tomasz Napierala 1678ec125fbbSEdward Tomasz Napierala return; 1679ec125fbbSEdward Tomasz Napierala } 1680ec125fbbSEdward Tomasz Napierala 1681ec125fbbSEdward Tomasz Napierala goaround: 1682ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1683ec125fbbSEdward Tomasz Napierala 1684ec125fbbSEdward Tomasz Napierala /* 1685ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 1686ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 1687ec125fbbSEdward Tomasz Napierala */ 1688ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1689ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1690ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1691ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 1692ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 1693ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 1694ec125fbbSEdward Tomasz Napierala } 1695ec125fbbSEdward Tomasz Napierala 1696ec125fbbSEdward Tomasz Napierala goto again; 1697ec125fbbSEdward Tomasz Napierala } 1698ec125fbbSEdward Tomasz Napierala 1699ec125fbbSEdward Tomasz Napierala /* 1700ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 1701ec125fbbSEdward Tomasz Napierala */ 1702ec125fbbSEdward Tomasz Napierala int 1703ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 1704ec125fbbSEdward Tomasz Napierala { 1705ec125fbbSEdward Tomasz Napierala int error; 1706ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1707ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1708ec125fbbSEdward Tomasz Napierala 1709ec125fbbSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 1710ec125fbbSEdward Tomasz Napierala 1711*0b18eb6dSEdward Tomasz Napierala KASSERT(parent->p_racct != NULL, ("process without racct; p = %p", parent)); 1712ec125fbbSEdward Tomasz Napierala 1713ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1714ec125fbbSEdward Tomasz Napierala 1715ec125fbbSEdward Tomasz Napierala /* 1716ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 1717ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 1718ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 1719ec125fbbSEdward Tomasz Napierala */ 1720ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 1721ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1722ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1723ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 1724ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1725ec125fbbSEdward Tomasz Napierala goto fail; 1726ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 1727ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 1728ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 1729ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1730ec125fbbSEdward Tomasz Napierala rule); 1731ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1732ec125fbbSEdward Tomasz Napierala if (error != 0) 1733ec125fbbSEdward Tomasz Napierala goto fail; 1734ec125fbbSEdward Tomasz Napierala } else { 1735ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1736ec125fbbSEdward Tomasz Napierala link->rrl_rule); 1737ec125fbbSEdward Tomasz Napierala if (error != 0) 1738ec125fbbSEdward Tomasz Napierala goto fail; 1739ec125fbbSEdward Tomasz Napierala } 1740ec125fbbSEdward Tomasz Napierala } 1741ec125fbbSEdward Tomasz Napierala 1742ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1743ec125fbbSEdward Tomasz Napierala return (0); 1744ec125fbbSEdward Tomasz Napierala 1745ec125fbbSEdward Tomasz Napierala fail: 1746ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 1747ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 1748ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1749ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1750ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1751ec125fbbSEdward Tomasz Napierala } 1752ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1753ec125fbbSEdward Tomasz Napierala return (EAGAIN); 1754ec125fbbSEdward Tomasz Napierala } 1755ec125fbbSEdward Tomasz Napierala 1756ec125fbbSEdward Tomasz Napierala /* 1757ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 1758ec125fbbSEdward Tomasz Napierala */ 1759ec125fbbSEdward Tomasz Napierala void 1760ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 1761ec125fbbSEdward Tomasz Napierala { 1762ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1763ec125fbbSEdward Tomasz Napierala 1764ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1765ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 1766ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 1767ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1768ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1769ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1770ec125fbbSEdward Tomasz Napierala } 1771ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1772ec125fbbSEdward Tomasz Napierala } 1773ec125fbbSEdward Tomasz Napierala 1774ec125fbbSEdward Tomasz Napierala static void 1775ec125fbbSEdward Tomasz Napierala rctl_init(void) 1776ec125fbbSEdward Tomasz Napierala { 1777ec125fbbSEdward Tomasz Napierala 1778ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 1779ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 1780ec125fbbSEdward Tomasz Napierala UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1781ec125fbbSEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 1782ec125fbbSEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1783ec125fbbSEdward Tomasz Napierala } 1784ec125fbbSEdward Tomasz Napierala 1785ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 1786ec125fbbSEdward Tomasz Napierala 1787ec125fbbSEdward Tomasz Napierala int 17888451d0ddSKip Macy sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1789ec125fbbSEdward Tomasz Napierala { 1790ec125fbbSEdward Tomasz Napierala 1791ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1792ec125fbbSEdward Tomasz Napierala } 1793ec125fbbSEdward Tomasz Napierala 1794ec125fbbSEdward Tomasz Napierala int 17958451d0ddSKip Macy sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1796ec125fbbSEdward Tomasz Napierala { 1797ec125fbbSEdward Tomasz Napierala 1798ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1799ec125fbbSEdward Tomasz Napierala } 1800ec125fbbSEdward Tomasz Napierala 1801ec125fbbSEdward Tomasz Napierala int 18028451d0ddSKip Macy sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1803ec125fbbSEdward Tomasz Napierala { 1804ec125fbbSEdward Tomasz Napierala 1805ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1806ec125fbbSEdward Tomasz Napierala } 1807ec125fbbSEdward Tomasz Napierala 1808ec125fbbSEdward Tomasz Napierala int 18098451d0ddSKip Macy sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1810ec125fbbSEdward Tomasz Napierala { 1811ec125fbbSEdward Tomasz Napierala 1812ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1813ec125fbbSEdward Tomasz Napierala } 1814ec125fbbSEdward Tomasz Napierala 1815ec125fbbSEdward Tomasz Napierala int 18168451d0ddSKip Macy sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1817ec125fbbSEdward Tomasz Napierala { 1818ec125fbbSEdward Tomasz Napierala 1819ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1820ec125fbbSEdward Tomasz Napierala } 1821ec125fbbSEdward Tomasz Napierala 1822ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 1823