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 76ec125fbbSEdward Tomasz Napierala #define RCTL_LOG_BUFSIZE 128 77ec125fbbSEdward Tomasz Napierala 78ec125fbbSEdward Tomasz Napierala /* 79ec125fbbSEdward Tomasz Napierala * 'rctl_rule_link' connects a rule with every racct it's related to. 80ec125fbbSEdward Tomasz Napierala * For example, rule 'user:X:openfiles:deny=N/process' is linked 81ec125fbbSEdward Tomasz Napierala * with uidinfo for user X, and to each process of that user. 82ec125fbbSEdward Tomasz Napierala */ 83ec125fbbSEdward Tomasz Napierala struct rctl_rule_link { 84ec125fbbSEdward Tomasz Napierala LIST_ENTRY(rctl_rule_link) rrl_next; 85ec125fbbSEdward Tomasz Napierala struct rctl_rule *rrl_rule; 86ec125fbbSEdward Tomasz Napierala int rrl_exceeded; 87ec125fbbSEdward Tomasz Napierala }; 88ec125fbbSEdward Tomasz Napierala 89ec125fbbSEdward Tomasz Napierala struct dict { 90ec125fbbSEdward Tomasz Napierala const char *d_name; 91ec125fbbSEdward Tomasz Napierala int d_value; 92ec125fbbSEdward Tomasz Napierala }; 93ec125fbbSEdward Tomasz Napierala 94ec125fbbSEdward Tomasz Napierala static struct dict subjectnames[] = { 95ec125fbbSEdward Tomasz Napierala { "process", RCTL_SUBJECT_TYPE_PROCESS }, 96ec125fbbSEdward Tomasz Napierala { "user", RCTL_SUBJECT_TYPE_USER }, 97ec125fbbSEdward Tomasz Napierala { "loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS }, 98ec125fbbSEdward Tomasz Napierala { "jail", RCTL_SUBJECT_TYPE_JAIL }, 99ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 100ec125fbbSEdward Tomasz Napierala 101ec125fbbSEdward Tomasz Napierala static struct dict resourcenames[] = { 102ec125fbbSEdward Tomasz Napierala { "cpu", RACCT_CPU }, 103ec125fbbSEdward Tomasz Napierala { "fsize", RACCT_FSIZE }, 104ec125fbbSEdward Tomasz Napierala { "data", RACCT_DATA }, 105ec125fbbSEdward Tomasz Napierala { "stack", RACCT_STACK }, 106ec125fbbSEdward Tomasz Napierala { "core", RACCT_CORE }, 107ec125fbbSEdward Tomasz Napierala { "rss", RACCT_RSS }, 108ec125fbbSEdward Tomasz Napierala { "memlock", RACCT_MEMLOCK }, 109ec125fbbSEdward Tomasz Napierala { "nproc", RACCT_NPROC }, 110ec125fbbSEdward Tomasz Napierala { "nofile", RACCT_NOFILE }, 111ec125fbbSEdward Tomasz Napierala { "sbsize", RACCT_SBSIZE }, 112ec125fbbSEdward Tomasz Napierala { "vmem", RACCT_VMEM }, 113ec125fbbSEdward Tomasz Napierala { "npts", RACCT_NPTS }, 114ec125fbbSEdward Tomasz Napierala { "swap", RACCT_SWAP }, 115ec125fbbSEdward Tomasz Napierala { "nthr", RACCT_NTHR }, 116ec125fbbSEdward Tomasz Napierala { "msgqqueued", RACCT_MSGQQUEUED }, 117ec125fbbSEdward Tomasz Napierala { "msgqsize", RACCT_MSGQSIZE }, 118ec125fbbSEdward Tomasz Napierala { "nmsgq", RACCT_NMSGQ }, 119ec125fbbSEdward Tomasz Napierala { "nsem", RACCT_NSEM }, 120ec125fbbSEdward Tomasz Napierala { "nsemop", RACCT_NSEMOP }, 121ec125fbbSEdward Tomasz Napierala { "nshm", RACCT_NSHM }, 122ec125fbbSEdward Tomasz Napierala { "shmsize", RACCT_SHMSIZE }, 123ec125fbbSEdward Tomasz Napierala { "wallclock", RACCT_WALLCLOCK }, 124ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 125ec125fbbSEdward Tomasz Napierala 126ec125fbbSEdward Tomasz Napierala static struct dict actionnames[] = { 127ec125fbbSEdward Tomasz Napierala { "sighup", RCTL_ACTION_SIGHUP }, 128ec125fbbSEdward Tomasz Napierala { "sigint", RCTL_ACTION_SIGINT }, 129ec125fbbSEdward Tomasz Napierala { "sigquit", RCTL_ACTION_SIGQUIT }, 130ec125fbbSEdward Tomasz Napierala { "sigill", RCTL_ACTION_SIGILL }, 131ec125fbbSEdward Tomasz Napierala { "sigtrap", RCTL_ACTION_SIGTRAP }, 132ec125fbbSEdward Tomasz Napierala { "sigabrt", RCTL_ACTION_SIGABRT }, 133ec125fbbSEdward Tomasz Napierala { "sigemt", RCTL_ACTION_SIGEMT }, 134ec125fbbSEdward Tomasz Napierala { "sigfpe", RCTL_ACTION_SIGFPE }, 135ec125fbbSEdward Tomasz Napierala { "sigkill", RCTL_ACTION_SIGKILL }, 136ec125fbbSEdward Tomasz Napierala { "sigbus", RCTL_ACTION_SIGBUS }, 137ec125fbbSEdward Tomasz Napierala { "sigsegv", RCTL_ACTION_SIGSEGV }, 138ec125fbbSEdward Tomasz Napierala { "sigsys", RCTL_ACTION_SIGSYS }, 139ec125fbbSEdward Tomasz Napierala { "sigpipe", RCTL_ACTION_SIGPIPE }, 140ec125fbbSEdward Tomasz Napierala { "sigalrm", RCTL_ACTION_SIGALRM }, 141ec125fbbSEdward Tomasz Napierala { "sigterm", RCTL_ACTION_SIGTERM }, 142ec125fbbSEdward Tomasz Napierala { "sigurg", RCTL_ACTION_SIGURG }, 143ec125fbbSEdward Tomasz Napierala { "sigstop", RCTL_ACTION_SIGSTOP }, 144ec125fbbSEdward Tomasz Napierala { "sigtstp", RCTL_ACTION_SIGTSTP }, 145ec125fbbSEdward Tomasz Napierala { "sigchld", RCTL_ACTION_SIGCHLD }, 146ec125fbbSEdward Tomasz Napierala { "sigttin", RCTL_ACTION_SIGTTIN }, 147ec125fbbSEdward Tomasz Napierala { "sigttou", RCTL_ACTION_SIGTTOU }, 148ec125fbbSEdward Tomasz Napierala { "sigio", RCTL_ACTION_SIGIO }, 149ec125fbbSEdward Tomasz Napierala { "sigxcpu", RCTL_ACTION_SIGXCPU }, 150ec125fbbSEdward Tomasz Napierala { "sigxfsz", RCTL_ACTION_SIGXFSZ }, 151ec125fbbSEdward Tomasz Napierala { "sigvtalrm", RCTL_ACTION_SIGVTALRM }, 152ec125fbbSEdward Tomasz Napierala { "sigprof", RCTL_ACTION_SIGPROF }, 153ec125fbbSEdward Tomasz Napierala { "sigwinch", RCTL_ACTION_SIGWINCH }, 154ec125fbbSEdward Tomasz Napierala { "siginfo", RCTL_ACTION_SIGINFO }, 155ec125fbbSEdward Tomasz Napierala { "sigusr1", RCTL_ACTION_SIGUSR1 }, 156ec125fbbSEdward Tomasz Napierala { "sigusr2", RCTL_ACTION_SIGUSR2 }, 157ec125fbbSEdward Tomasz Napierala { "sigthr", RCTL_ACTION_SIGTHR }, 158ec125fbbSEdward Tomasz Napierala { "deny", RCTL_ACTION_DENY }, 159ec125fbbSEdward Tomasz Napierala { "log", RCTL_ACTION_LOG }, 160ec125fbbSEdward Tomasz Napierala { "devctl", RCTL_ACTION_DEVCTL }, 161ec125fbbSEdward Tomasz Napierala { NULL, -1 }}; 162ec125fbbSEdward Tomasz Napierala 163ec125fbbSEdward Tomasz Napierala static void rctl_init(void); 164ec125fbbSEdward Tomasz Napierala SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL); 165ec125fbbSEdward Tomasz Napierala 166ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_link_zone; 167ec125fbbSEdward Tomasz Napierala static uma_zone_t rctl_rule_zone; 168ec125fbbSEdward Tomasz Napierala static struct rwlock rctl_lock; 169ec125fbbSEdward Tomasz Napierala RW_SYSINIT(rctl_lock, &rctl_lock, "RCTL lock"); 170ec125fbbSEdward Tomasz Napierala 171ec125fbbSEdward Tomasz Napierala static int rctl_rule_fully_specified(const struct rctl_rule *rule); 172ec125fbbSEdward Tomasz Napierala static void rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule); 173ec125fbbSEdward Tomasz Napierala 174ec125fbbSEdward Tomasz Napierala MALLOC_DEFINE(M_RCTL, "rctl", "Resource Limits"); 175ec125fbbSEdward Tomasz Napierala 176ec125fbbSEdward Tomasz Napierala static const char * 177ec125fbbSEdward Tomasz Napierala rctl_subject_type_name(int subject) 178ec125fbbSEdward Tomasz Napierala { 179ec125fbbSEdward Tomasz Napierala int i; 180ec125fbbSEdward Tomasz Napierala 181ec125fbbSEdward Tomasz Napierala for (i = 0; subjectnames[i].d_name != NULL; i++) { 182ec125fbbSEdward Tomasz Napierala if (subjectnames[i].d_value == subject) 183ec125fbbSEdward Tomasz Napierala return (subjectnames[i].d_name); 184ec125fbbSEdward Tomasz Napierala } 185ec125fbbSEdward Tomasz Napierala 186ec125fbbSEdward Tomasz Napierala panic("rctl_subject_type_name: unknown subject type %d", subject); 187ec125fbbSEdward Tomasz Napierala } 188ec125fbbSEdward Tomasz Napierala 189ec125fbbSEdward Tomasz Napierala static const char * 190ec125fbbSEdward Tomasz Napierala rctl_action_name(int action) 191ec125fbbSEdward Tomasz Napierala { 192ec125fbbSEdward Tomasz Napierala int i; 193ec125fbbSEdward Tomasz Napierala 194ec125fbbSEdward Tomasz Napierala for (i = 0; actionnames[i].d_name != NULL; i++) { 195ec125fbbSEdward Tomasz Napierala if (actionnames[i].d_value == action) 196ec125fbbSEdward Tomasz Napierala return (actionnames[i].d_name); 197ec125fbbSEdward Tomasz Napierala } 198ec125fbbSEdward Tomasz Napierala 199ec125fbbSEdward Tomasz Napierala panic("rctl_action_name: unknown action %d", action); 200ec125fbbSEdward Tomasz Napierala } 201ec125fbbSEdward Tomasz Napierala 202ec125fbbSEdward Tomasz Napierala const char * 203ec125fbbSEdward Tomasz Napierala rctl_resource_name(int resource) 204ec125fbbSEdward Tomasz Napierala { 205ec125fbbSEdward Tomasz Napierala int i; 206ec125fbbSEdward Tomasz Napierala 207ec125fbbSEdward Tomasz Napierala for (i = 0; resourcenames[i].d_name != NULL; i++) { 208ec125fbbSEdward Tomasz Napierala if (resourcenames[i].d_value == resource) 209ec125fbbSEdward Tomasz Napierala return (resourcenames[i].d_name); 210ec125fbbSEdward Tomasz Napierala } 211ec125fbbSEdward Tomasz Napierala 212ec125fbbSEdward Tomasz Napierala panic("rctl_resource_name: unknown resource %d", resource); 213ec125fbbSEdward Tomasz Napierala } 214ec125fbbSEdward Tomasz Napierala 215ec125fbbSEdward Tomasz Napierala /* 216ec125fbbSEdward Tomasz Napierala * Return the amount of resource that can be allocated by 'p' before 217ec125fbbSEdward Tomasz Napierala * hitting 'rule'. 218ec125fbbSEdward Tomasz Napierala */ 219ec125fbbSEdward Tomasz Napierala static int64_t 220ec125fbbSEdward Tomasz Napierala rctl_available_resource(const struct proc *p, const struct rctl_rule *rule) 221ec125fbbSEdward Tomasz Napierala { 222ec125fbbSEdward Tomasz Napierala int resource; 223ec125fbbSEdward Tomasz Napierala int64_t available = INT64_MAX; 224ec125fbbSEdward Tomasz Napierala struct ucred *cred = p->p_ucred; 225ec125fbbSEdward Tomasz Napierala 226ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 227ec125fbbSEdward Tomasz Napierala 228ec125fbbSEdward Tomasz Napierala resource = rule->rr_resource; 229ec125fbbSEdward Tomasz Napierala switch (rule->rr_per) { 230ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 231ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 232ec125fbbSEdward Tomasz Napierala p->p_racct->r_resources[resource]; 233ec125fbbSEdward Tomasz Napierala break; 234ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 235ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 236ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo->ui_racct->r_resources[resource]; 237ec125fbbSEdward Tomasz Napierala break; 238ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 239ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 240ec125fbbSEdward Tomasz Napierala cred->cr_loginclass->lc_racct->r_resources[resource]; 241ec125fbbSEdward Tomasz Napierala break; 242ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 243ec125fbbSEdward Tomasz Napierala available = rule->rr_amount - 244*a7ad07bfSEdward Tomasz Napierala cred->cr_prison->pr_prison_racct->prr_racct-> 245*a7ad07bfSEdward Tomasz Napierala r_resources[resource]; 246ec125fbbSEdward Tomasz Napierala break; 247ec125fbbSEdward Tomasz Napierala default: 248ec125fbbSEdward Tomasz Napierala panic("rctl_compute_available: unknown per %d", 249ec125fbbSEdward Tomasz Napierala rule->rr_per); 250ec125fbbSEdward Tomasz Napierala } 251ec125fbbSEdward Tomasz Napierala 252ec125fbbSEdward Tomasz Napierala return (available); 253ec125fbbSEdward Tomasz Napierala } 254ec125fbbSEdward Tomasz Napierala 255ec125fbbSEdward Tomasz Napierala /* 256ec125fbbSEdward Tomasz Napierala * Return non-zero if allocating 'amount' by proc 'p' would exceed 257ec125fbbSEdward Tomasz Napierala * resource limit specified by 'rule'. 258ec125fbbSEdward Tomasz Napierala */ 259ec125fbbSEdward Tomasz Napierala static int 260ec125fbbSEdward Tomasz Napierala rctl_would_exceed(const struct proc *p, const struct rctl_rule *rule, 261ec125fbbSEdward Tomasz Napierala int64_t amount) 262ec125fbbSEdward Tomasz Napierala { 263ec125fbbSEdward Tomasz Napierala int64_t available; 264ec125fbbSEdward Tomasz Napierala 265ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_LOCKED); 266ec125fbbSEdward Tomasz Napierala 267ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 268ec125fbbSEdward Tomasz Napierala if (available >= amount) 269ec125fbbSEdward Tomasz Napierala return (0); 270ec125fbbSEdward Tomasz Napierala 271ec125fbbSEdward Tomasz Napierala return (1); 272ec125fbbSEdward Tomasz Napierala } 273ec125fbbSEdward Tomasz Napierala 274ec125fbbSEdward Tomasz Napierala /* 275ec125fbbSEdward Tomasz Napierala * Check whether the proc 'p' can allocate 'amount' of 'resource' in addition 276ec125fbbSEdward Tomasz Napierala * to what it keeps allocated now. Returns non-zero if the allocation should 277ec125fbbSEdward Tomasz Napierala * be denied, 0 otherwise. 278ec125fbbSEdward Tomasz Napierala */ 279ec125fbbSEdward Tomasz Napierala int 280ec125fbbSEdward Tomasz Napierala rctl_enforce(struct proc *p, int resource, uint64_t amount) 281ec125fbbSEdward Tomasz Napierala { 282ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 283ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 284ec125fbbSEdward Tomasz Napierala struct sbuf sb; 285ec125fbbSEdward Tomasz Napierala int should_deny = 0; 286ec125fbbSEdward Tomasz Napierala char *buf; 287ec125fbbSEdward Tomasz Napierala static int curtime = 0; 288ec125fbbSEdward Tomasz Napierala static struct timeval lasttime; 289ec125fbbSEdward Tomasz Napierala 290ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 291ec125fbbSEdward Tomasz Napierala 292ec125fbbSEdward Tomasz Napierala /* 293ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 294ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 295ec125fbbSEdward Tomasz Napierala */ 296ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 297ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 298ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 299ec125fbbSEdward Tomasz Napierala continue; 300ec125fbbSEdward Tomasz Napierala if (!rctl_would_exceed(p, rule, amount)) { 301ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 302ec125fbbSEdward Tomasz Napierala continue; 303ec125fbbSEdward Tomasz Napierala } 304ec125fbbSEdward Tomasz Napierala 305ec125fbbSEdward Tomasz Napierala switch (rule->rr_action) { 306ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DENY: 307ec125fbbSEdward Tomasz Napierala should_deny = 1; 308ec125fbbSEdward Tomasz Napierala continue; 309ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_LOG: 310ec125fbbSEdward Tomasz Napierala /* 311ec125fbbSEdward Tomasz Napierala * If rrl_exceeded != 0, it means we've already 312ec125fbbSEdward Tomasz Napierala * logged a warning for this process. 313ec125fbbSEdward Tomasz Napierala */ 314ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 315ec125fbbSEdward Tomasz Napierala continue; 316ec125fbbSEdward Tomasz Napierala 317ec125fbbSEdward Tomasz Napierala if (!ppsratecheck(&lasttime, &curtime, 10)) 318ec125fbbSEdward Tomasz Napierala continue; 319ec125fbbSEdward Tomasz Napierala 320ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 321ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 322ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 323ec125fbbSEdward Tomasz Napierala continue; 324ec125fbbSEdward Tomasz Napierala } 325ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 326ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 327ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 328ec125fbbSEdward Tomasz Napierala printf("rctl: rule \"%s\" matched by pid %d " 329ec125fbbSEdward Tomasz Napierala "(%s), uid %d, jail %s\n", sbuf_data(&sb), 330ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_comm, p->p_ucred->cr_uid, 331*a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 332ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 333ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 334ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 335ec125fbbSEdward Tomasz Napierala continue; 336ec125fbbSEdward Tomasz Napierala case RCTL_ACTION_DEVCTL: 337ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 338ec125fbbSEdward Tomasz Napierala continue; 339ec125fbbSEdward Tomasz Napierala 340ec125fbbSEdward Tomasz Napierala buf = malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT); 341ec125fbbSEdward Tomasz Napierala if (buf == NULL) { 342ec125fbbSEdward Tomasz Napierala printf("rctl_enforce: out of memory\n"); 343ec125fbbSEdward Tomasz Napierala continue; 344ec125fbbSEdward Tomasz Napierala } 345ec125fbbSEdward Tomasz Napierala sbuf_new(&sb, buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN); 346ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, "rule="); 347ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(&sb, rule); 348ec125fbbSEdward Tomasz Napierala sbuf_printf(&sb, " pid=%d ruid=%d jail=%s", 349ec125fbbSEdward Tomasz Napierala p->p_pid, p->p_ucred->cr_ruid, 350*a7ad07bfSEdward Tomasz Napierala p->p_ucred->cr_prison->pr_prison_racct->prr_name); 351ec125fbbSEdward Tomasz Napierala sbuf_finish(&sb); 352ec125fbbSEdward Tomasz Napierala devctl_notify_f("RCTL", "rule", "matched", 353ec125fbbSEdward Tomasz Napierala sbuf_data(&sb), M_NOWAIT); 354ec125fbbSEdward Tomasz Napierala sbuf_delete(&sb); 355ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 356ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 357ec125fbbSEdward Tomasz Napierala continue; 358ec125fbbSEdward Tomasz Napierala default: 359ec125fbbSEdward Tomasz Napierala if (link->rrl_exceeded != 0) 360ec125fbbSEdward Tomasz Napierala continue; 361ec125fbbSEdward Tomasz Napierala 362ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_action > 0 && 363ec125fbbSEdward Tomasz Napierala rule->rr_action <= RCTL_ACTION_SIGNAL_MAX, 364ec125fbbSEdward Tomasz Napierala ("rctl_enforce: unknown action %d", 365ec125fbbSEdward Tomasz Napierala rule->rr_action)); 366ec125fbbSEdward Tomasz Napierala 367ec125fbbSEdward Tomasz Napierala /* 368ec125fbbSEdward Tomasz Napierala * We're using the fact that RCTL_ACTION_SIG* values 369ec125fbbSEdward Tomasz Napierala * are equal to their counterparts from sys/signal.h. 370ec125fbbSEdward Tomasz Napierala */ 371ec125fbbSEdward Tomasz Napierala psignal(p, rule->rr_action); 372ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 1; 373ec125fbbSEdward Tomasz Napierala continue; 374ec125fbbSEdward Tomasz Napierala } 375ec125fbbSEdward Tomasz Napierala } 376ec125fbbSEdward Tomasz Napierala 377ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 378ec125fbbSEdward Tomasz Napierala 379ec125fbbSEdward Tomasz Napierala if (should_deny) { 380ec125fbbSEdward Tomasz Napierala /* 381ec125fbbSEdward Tomasz Napierala * Return fake error code; the caller should change it 382ec125fbbSEdward Tomasz Napierala * into one proper for the situation - EFSIZ, ENOMEM etc. 383ec125fbbSEdward Tomasz Napierala */ 384ec125fbbSEdward Tomasz Napierala return (EDOOFUS); 385ec125fbbSEdward Tomasz Napierala } 386ec125fbbSEdward Tomasz Napierala 387ec125fbbSEdward Tomasz Napierala return (0); 388ec125fbbSEdward Tomasz Napierala } 389ec125fbbSEdward Tomasz Napierala 390ec125fbbSEdward Tomasz Napierala uint64_t 391ec125fbbSEdward Tomasz Napierala rctl_get_limit(struct proc *p, int resource) 392ec125fbbSEdward Tomasz Napierala { 393ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 394ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 395ec125fbbSEdward Tomasz Napierala uint64_t amount = UINT64_MAX; 396ec125fbbSEdward Tomasz Napierala 397ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 398ec125fbbSEdward Tomasz Napierala 399ec125fbbSEdward Tomasz Napierala /* 400ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 401ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 402ec125fbbSEdward Tomasz Napierala */ 403ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 404ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 405ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 406ec125fbbSEdward Tomasz Napierala continue; 407ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 408ec125fbbSEdward Tomasz Napierala continue; 409ec125fbbSEdward Tomasz Napierala if (rule->rr_amount < amount) 410ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 411ec125fbbSEdward Tomasz Napierala } 412ec125fbbSEdward Tomasz Napierala 413ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 414ec125fbbSEdward Tomasz Napierala 415ec125fbbSEdward Tomasz Napierala return (amount); 416ec125fbbSEdward Tomasz Napierala } 417ec125fbbSEdward Tomasz Napierala 418ec125fbbSEdward Tomasz Napierala uint64_t 419ec125fbbSEdward Tomasz Napierala rctl_get_available(struct proc *p, int resource) 420ec125fbbSEdward Tomasz Napierala { 421ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 422ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 423ec125fbbSEdward Tomasz Napierala int64_t available, minavailable, allocated; 424ec125fbbSEdward Tomasz Napierala 425ec125fbbSEdward Tomasz Napierala minavailable = INT64_MAX; 426ec125fbbSEdward Tomasz Napierala 427ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 428ec125fbbSEdward Tomasz Napierala 429ec125fbbSEdward Tomasz Napierala /* 430ec125fbbSEdward Tomasz Napierala * There may be more than one matching rule; go through all of them. 431ec125fbbSEdward Tomasz Napierala * Denial should be done last, after logging and sending signals. 432ec125fbbSEdward Tomasz Napierala */ 433ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 434ec125fbbSEdward Tomasz Napierala rule = link->rrl_rule; 435ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != resource) 436ec125fbbSEdward Tomasz Napierala continue; 437ec125fbbSEdward Tomasz Napierala if (rule->rr_action != RCTL_ACTION_DENY) 438ec125fbbSEdward Tomasz Napierala continue; 439ec125fbbSEdward Tomasz Napierala available = rctl_available_resource(p, rule); 440ec125fbbSEdward Tomasz Napierala if (available < minavailable) 441ec125fbbSEdward Tomasz Napierala minavailable = available; 442ec125fbbSEdward Tomasz Napierala } 443ec125fbbSEdward Tomasz Napierala 444ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 445ec125fbbSEdward Tomasz Napierala 446ec125fbbSEdward Tomasz Napierala /* 447ec125fbbSEdward Tomasz Napierala * XXX: Think about this _hard_. 448ec125fbbSEdward Tomasz Napierala */ 449ec125fbbSEdward Tomasz Napierala allocated = p->p_racct->r_resources[resource]; 450ec125fbbSEdward Tomasz Napierala if (minavailable < INT64_MAX - allocated) 451ec125fbbSEdward Tomasz Napierala minavailable += allocated; 452ec125fbbSEdward Tomasz Napierala if (minavailable < 0) 453ec125fbbSEdward Tomasz Napierala minavailable = 0; 454ec125fbbSEdward Tomasz Napierala return (minavailable); 455ec125fbbSEdward Tomasz Napierala } 456ec125fbbSEdward Tomasz Napierala 457ec125fbbSEdward Tomasz Napierala static int 458ec125fbbSEdward Tomasz Napierala rctl_rule_matches(const struct rctl_rule *rule, const struct rctl_rule *filter) 459ec125fbbSEdward Tomasz Napierala { 460ec125fbbSEdward Tomasz Napierala 461ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) { 462ec125fbbSEdward Tomasz Napierala if (rule->rr_subject_type != filter->rr_subject_type) 463ec125fbbSEdward Tomasz Napierala return (0); 464ec125fbbSEdward Tomasz Napierala 465ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 466ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 467ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc != NULL && 468ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc != 469ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc) 470ec125fbbSEdward Tomasz Napierala return (0); 471ec125fbbSEdward Tomasz Napierala break; 472ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 473ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_uip != NULL && 474ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip != 475ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_uip) 476ec125fbbSEdward Tomasz Napierala return (0); 477ec125fbbSEdward Tomasz Napierala break; 478ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 479415896e3SEdward Tomasz Napierala if (filter->rr_subject.rs_loginclass != NULL && 480415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass != 481415896e3SEdward Tomasz Napierala filter->rr_subject.rs_loginclass) 482ec125fbbSEdward Tomasz Napierala return (0); 483ec125fbbSEdward Tomasz Napierala break; 484ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 485*a7ad07bfSEdward Tomasz Napierala if (filter->rr_subject.rs_prison_racct != NULL && 486*a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct != 487*a7ad07bfSEdward Tomasz Napierala filter->rr_subject.rs_prison_racct) 488ec125fbbSEdward Tomasz Napierala return (0); 489ec125fbbSEdward Tomasz Napierala break; 490ec125fbbSEdward Tomasz Napierala default: 491ec125fbbSEdward Tomasz Napierala panic("rctl_rule_matches: unknown subject type %d", 492ec125fbbSEdward Tomasz Napierala filter->rr_subject_type); 493ec125fbbSEdward Tomasz Napierala } 494ec125fbbSEdward Tomasz Napierala } 495ec125fbbSEdward Tomasz Napierala 496ec125fbbSEdward Tomasz Napierala if (filter->rr_resource != RACCT_UNDEFINED) { 497ec125fbbSEdward Tomasz Napierala if (rule->rr_resource != filter->rr_resource) 498ec125fbbSEdward Tomasz Napierala return (0); 499ec125fbbSEdward Tomasz Napierala } 500ec125fbbSEdward Tomasz Napierala 501ec125fbbSEdward Tomasz Napierala if (filter->rr_action != RCTL_ACTION_UNDEFINED) { 502ec125fbbSEdward Tomasz Napierala if (rule->rr_action != filter->rr_action) 503ec125fbbSEdward Tomasz Napierala return (0); 504ec125fbbSEdward Tomasz Napierala } 505ec125fbbSEdward Tomasz Napierala 506ec125fbbSEdward Tomasz Napierala if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) { 507ec125fbbSEdward Tomasz Napierala if (rule->rr_amount != filter->rr_amount) 508ec125fbbSEdward Tomasz Napierala return (0); 509ec125fbbSEdward Tomasz Napierala } 510ec125fbbSEdward Tomasz Napierala 511ec125fbbSEdward Tomasz Napierala if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) { 512ec125fbbSEdward Tomasz Napierala if (rule->rr_per != filter->rr_per) 513ec125fbbSEdward Tomasz Napierala return (0); 514ec125fbbSEdward Tomasz Napierala } 515ec125fbbSEdward Tomasz Napierala 516ec125fbbSEdward Tomasz Napierala return (1); 517ec125fbbSEdward Tomasz Napierala } 518ec125fbbSEdward Tomasz Napierala 519ec125fbbSEdward Tomasz Napierala static int 520ec125fbbSEdward Tomasz Napierala str2value(const char *str, int *value, struct dict *table) 521ec125fbbSEdward Tomasz Napierala { 522ec125fbbSEdward Tomasz Napierala int i; 523ec125fbbSEdward Tomasz Napierala 524ec125fbbSEdward Tomasz Napierala if (value == NULL) 525ec125fbbSEdward Tomasz Napierala return (EINVAL); 526ec125fbbSEdward Tomasz Napierala 527ec125fbbSEdward Tomasz Napierala for (i = 0; table[i].d_name != NULL; i++) { 528ec125fbbSEdward Tomasz Napierala if (strcasecmp(table[i].d_name, str) == 0) { 529ec125fbbSEdward Tomasz Napierala *value = table[i].d_value; 530ec125fbbSEdward Tomasz Napierala return (0); 531ec125fbbSEdward Tomasz Napierala } 532ec125fbbSEdward Tomasz Napierala } 533ec125fbbSEdward Tomasz Napierala 534ec125fbbSEdward Tomasz Napierala return (EINVAL); 535ec125fbbSEdward Tomasz Napierala } 536ec125fbbSEdward Tomasz Napierala 537ec125fbbSEdward Tomasz Napierala static int 538ec125fbbSEdward Tomasz Napierala str2id(const char *str, id_t *value) 539ec125fbbSEdward Tomasz Napierala { 540ec125fbbSEdward Tomasz Napierala char *end; 541ec125fbbSEdward Tomasz Napierala 542ec125fbbSEdward Tomasz Napierala if (str == NULL) 543ec125fbbSEdward Tomasz Napierala return (EINVAL); 544ec125fbbSEdward Tomasz Napierala 545ec125fbbSEdward Tomasz Napierala *value = strtoul(str, &end, 10); 546ec125fbbSEdward Tomasz Napierala if ((size_t)(end - str) != strlen(str)) 547ec125fbbSEdward Tomasz Napierala return (EINVAL); 548ec125fbbSEdward Tomasz Napierala 549ec125fbbSEdward Tomasz Napierala return (0); 550ec125fbbSEdward Tomasz Napierala } 551ec125fbbSEdward Tomasz Napierala 552ec125fbbSEdward Tomasz Napierala static int 553ec125fbbSEdward Tomasz Napierala str2int64(const char *str, int64_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 /* 568ec125fbbSEdward Tomasz Napierala * Connect the rule to the racct, increasing refcount for the rule. 569ec125fbbSEdward Tomasz Napierala */ 570ec125fbbSEdward Tomasz Napierala static void 571ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(struct racct *racct, struct rctl_rule *rule) 572ec125fbbSEdward Tomasz Napierala { 573ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 574ec125fbbSEdward Tomasz Napierala 575ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 576ec125fbbSEdward Tomasz Napierala 577ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 578ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 579ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 580ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 581ec125fbbSEdward Tomasz Napierala 582ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 583ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 584ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 585ec125fbbSEdward Tomasz Napierala } 586ec125fbbSEdward Tomasz Napierala 587ec125fbbSEdward Tomasz Napierala static int 588ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule_locked(struct racct *racct, struct rctl_rule *rule) 589ec125fbbSEdward Tomasz Napierala { 590ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 591ec125fbbSEdward Tomasz Napierala 592ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 593ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_WLOCKED); 594ec125fbbSEdward Tomasz Napierala 595ec125fbbSEdward Tomasz Napierala link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT); 596ec125fbbSEdward Tomasz Napierala if (link == NULL) 597ec125fbbSEdward Tomasz Napierala return (ENOMEM); 598ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(rule); 599ec125fbbSEdward Tomasz Napierala link->rrl_rule = rule; 600ec125fbbSEdward Tomasz Napierala link->rrl_exceeded = 0; 601ec125fbbSEdward Tomasz Napierala 602ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next); 603ec125fbbSEdward Tomasz Napierala return (0); 604ec125fbbSEdward Tomasz Napierala } 605ec125fbbSEdward Tomasz Napierala 606ec125fbbSEdward Tomasz Napierala /* 607ec125fbbSEdward Tomasz Napierala * Remove limits for a rules matching the filter and release 608ec125fbbSEdward Tomasz Napierala * the refcounts for the rules, possibly freeing them. Returns 609ec125fbbSEdward Tomasz Napierala * the number of limit structures removed. 610ec125fbbSEdward Tomasz Napierala */ 611ec125fbbSEdward Tomasz Napierala static int 612ec125fbbSEdward Tomasz Napierala rctl_racct_remove_rules(struct racct *racct, 613ec125fbbSEdward Tomasz Napierala const struct rctl_rule *filter) 614ec125fbbSEdward Tomasz Napierala { 615ec125fbbSEdward Tomasz Napierala int removed = 0; 616ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *linktmp; 617ec125fbbSEdward Tomasz Napierala 618ec125fbbSEdward Tomasz Napierala rw_assert(&rctl_lock, RA_WLOCKED); 619ec125fbbSEdward Tomasz Napierala 620ec125fbbSEdward Tomasz Napierala LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) { 621ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 622ec125fbbSEdward Tomasz Napierala continue; 623ec125fbbSEdward Tomasz Napierala 624ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 625ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 626ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 627ec125fbbSEdward Tomasz Napierala removed++; 628ec125fbbSEdward Tomasz Napierala } 629ec125fbbSEdward Tomasz Napierala return (removed); 630ec125fbbSEdward Tomasz Napierala } 631ec125fbbSEdward Tomasz Napierala 632ec125fbbSEdward Tomasz Napierala static void 633ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(struct rctl_rule *rule) 634ec125fbbSEdward Tomasz Napierala { 635ec125fbbSEdward Tomasz Napierala 636ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 637ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 638ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 639*a7ad07bfSEdward Tomasz Napierala break; 640ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 641*a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 642*a7ad07bfSEdward Tomasz Napierala prison_racct_hold(rule->rr_subject.rs_prison_racct); 643ec125fbbSEdward Tomasz Napierala break; 644ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 645ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 646ec125fbbSEdward Tomasz Napierala uihold(rule->rr_subject.rs_uip); 647ec125fbbSEdward Tomasz Napierala break; 648ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 649415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 650415896e3SEdward Tomasz Napierala loginclass_hold(rule->rr_subject.rs_loginclass); 651ec125fbbSEdward Tomasz Napierala break; 652ec125fbbSEdward Tomasz Napierala default: 653ec125fbbSEdward Tomasz Napierala panic("rctl_rule_acquire_subject: unknown subject type %d", 654ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 655ec125fbbSEdward Tomasz Napierala } 656ec125fbbSEdward Tomasz Napierala } 657ec125fbbSEdward Tomasz Napierala 658ec125fbbSEdward Tomasz Napierala static void 659ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(struct rctl_rule *rule) 660ec125fbbSEdward Tomasz Napierala { 661ec125fbbSEdward Tomasz Napierala 662ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 663ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 664ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 665*a7ad07bfSEdward Tomasz Napierala break; 666ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 667*a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct != NULL) 668*a7ad07bfSEdward Tomasz Napierala prison_racct_free(rule->rr_subject.rs_prison_racct); 669ec125fbbSEdward Tomasz Napierala break; 670ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 671ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip != NULL) 672ec125fbbSEdward Tomasz Napierala uifree(rule->rr_subject.rs_uip); 673ec125fbbSEdward Tomasz Napierala break; 674ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 675415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass != NULL) 676415896e3SEdward Tomasz Napierala loginclass_free(rule->rr_subject.rs_loginclass); 677ec125fbbSEdward Tomasz Napierala break; 678ec125fbbSEdward Tomasz Napierala default: 679ec125fbbSEdward Tomasz Napierala panic("rctl_rule_release_subject: unknown subject type %d", 680ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 681ec125fbbSEdward Tomasz Napierala } 682ec125fbbSEdward Tomasz Napierala } 683ec125fbbSEdward Tomasz Napierala 684ec125fbbSEdward Tomasz Napierala struct rctl_rule * 685ec125fbbSEdward Tomasz Napierala rctl_rule_alloc(int flags) 686ec125fbbSEdward Tomasz Napierala { 687ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 688ec125fbbSEdward Tomasz Napierala 689ec125fbbSEdward Tomasz Napierala rule = uma_zalloc(rctl_rule_zone, flags); 690ec125fbbSEdward Tomasz Napierala if (rule == NULL) 691ec125fbbSEdward Tomasz Napierala return (NULL); 692ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 693ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 694ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 695415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 696*a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 697ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 698ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 699ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 700ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 701ec125fbbSEdward Tomasz Napierala refcount_init(&rule->rr_refcount, 1); 702ec125fbbSEdward Tomasz Napierala 703ec125fbbSEdward Tomasz Napierala return (rule); 704ec125fbbSEdward Tomasz Napierala } 705ec125fbbSEdward Tomasz Napierala 706ec125fbbSEdward Tomasz Napierala struct rctl_rule * 707ec125fbbSEdward Tomasz Napierala rctl_rule_duplicate(const struct rctl_rule *rule, int flags) 708ec125fbbSEdward Tomasz Napierala { 709ec125fbbSEdward Tomasz Napierala struct rctl_rule *copy; 710ec125fbbSEdward Tomasz Napierala 711ec125fbbSEdward Tomasz Napierala copy = uma_zalloc(rctl_rule_zone, flags); 712ec125fbbSEdward Tomasz Napierala if (copy == NULL) 713ec125fbbSEdward Tomasz Napierala return (NULL); 714ec125fbbSEdward Tomasz Napierala copy->rr_subject_type = rule->rr_subject_type; 715ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_proc = rule->rr_subject.rs_proc; 716ec125fbbSEdward Tomasz Napierala copy->rr_subject.rs_uip = rule->rr_subject.rs_uip; 717415896e3SEdward Tomasz Napierala copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass; 718*a7ad07bfSEdward Tomasz Napierala copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct; 719ec125fbbSEdward Tomasz Napierala copy->rr_per = rule->rr_per; 720ec125fbbSEdward Tomasz Napierala copy->rr_resource = rule->rr_resource; 721ec125fbbSEdward Tomasz Napierala copy->rr_action = rule->rr_action; 722ec125fbbSEdward Tomasz Napierala copy->rr_amount = rule->rr_amount; 723ec125fbbSEdward Tomasz Napierala refcount_init(©->rr_refcount, 1); 724ec125fbbSEdward Tomasz Napierala rctl_rule_acquire_subject(copy); 725ec125fbbSEdward Tomasz Napierala 726ec125fbbSEdward Tomasz Napierala return (copy); 727ec125fbbSEdward Tomasz Napierala } 728ec125fbbSEdward Tomasz Napierala 729ec125fbbSEdward Tomasz Napierala void 730ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(struct rctl_rule *rule) 731ec125fbbSEdward Tomasz Napierala { 732ec125fbbSEdward Tomasz Napierala 733ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 734ec125fbbSEdward Tomasz Napierala 735ec125fbbSEdward Tomasz Napierala refcount_acquire(&rule->rr_refcount); 736ec125fbbSEdward Tomasz Napierala } 737ec125fbbSEdward Tomasz Napierala 738ec125fbbSEdward Tomasz Napierala static void 739ec125fbbSEdward Tomasz Napierala rctl_rule_free(void *context, int pending) 740ec125fbbSEdward Tomasz Napierala { 741ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 742ec125fbbSEdward Tomasz Napierala 743ec125fbbSEdward Tomasz Napierala rule = (struct rctl_rule *)context; 744ec125fbbSEdward Tomasz Napierala 745ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount == 0, ("rule->rr_refcount != 0")); 746ec125fbbSEdward Tomasz Napierala 747ec125fbbSEdward Tomasz Napierala /* 748ec125fbbSEdward Tomasz Napierala * We don't need locking here; rule is guaranteed to be inaccessible. 749ec125fbbSEdward Tomasz Napierala */ 750ec125fbbSEdward Tomasz Napierala 751ec125fbbSEdward Tomasz Napierala rctl_rule_release_subject(rule); 752ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_zone, rule); 753ec125fbbSEdward Tomasz Napierala } 754ec125fbbSEdward Tomasz Napierala 755ec125fbbSEdward Tomasz Napierala void 756ec125fbbSEdward Tomasz Napierala rctl_rule_release(struct rctl_rule *rule) 757ec125fbbSEdward Tomasz Napierala { 758ec125fbbSEdward Tomasz Napierala 759ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_refcount > 0, ("rule->rr_refcount <= 0")); 760ec125fbbSEdward Tomasz Napierala 761ec125fbbSEdward Tomasz Napierala if (refcount_release(&rule->rr_refcount)) { 762ec125fbbSEdward Tomasz Napierala /* 763ec125fbbSEdward Tomasz Napierala * rctl_rule_release() is often called when iterating 764ec125fbbSEdward Tomasz Napierala * over all the uidinfo structures in the system, 765ec125fbbSEdward Tomasz Napierala * holding uihashtbl_lock. Since rctl_rule_free() 766ec125fbbSEdward Tomasz Napierala * might end up calling uifree(), this would lead 767ec125fbbSEdward Tomasz Napierala * to lock recursion. Use taskqueue to avoid this. 768ec125fbbSEdward Tomasz Napierala */ 769ec125fbbSEdward Tomasz Napierala TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule); 770ec125fbbSEdward Tomasz Napierala taskqueue_enqueue(taskqueue_thread, &rule->rr_task); 771ec125fbbSEdward Tomasz Napierala } 772ec125fbbSEdward Tomasz Napierala } 773ec125fbbSEdward Tomasz Napierala 774ec125fbbSEdward Tomasz Napierala static int 775ec125fbbSEdward Tomasz Napierala rctl_rule_fully_specified(const struct rctl_rule *rule) 776ec125fbbSEdward Tomasz Napierala { 777ec125fbbSEdward Tomasz Napierala 778ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 779ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 780ec125fbbSEdward Tomasz Napierala return (0); 781ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 782ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 783ec125fbbSEdward Tomasz Napierala return (0); 784ec125fbbSEdward Tomasz Napierala break; 785ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 786ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 787ec125fbbSEdward Tomasz Napierala return (0); 788ec125fbbSEdward Tomasz Napierala break; 789ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 790415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 791ec125fbbSEdward Tomasz Napierala return (0); 792ec125fbbSEdward Tomasz Napierala break; 793ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 794*a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 795ec125fbbSEdward Tomasz Napierala return (0); 796ec125fbbSEdward Tomasz Napierala break; 797ec125fbbSEdward Tomasz Napierala default: 798ec125fbbSEdward Tomasz Napierala panic("rctl_rule_fully_specified: unknown subject type %d", 799ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 800ec125fbbSEdward Tomasz Napierala } 801ec125fbbSEdward Tomasz Napierala if (rule->rr_resource == RACCT_UNDEFINED) 802ec125fbbSEdward Tomasz Napierala return (0); 803ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_UNDEFINED) 804ec125fbbSEdward Tomasz Napierala return (0); 805ec125fbbSEdward Tomasz Napierala if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED) 806ec125fbbSEdward Tomasz Napierala return (0); 807ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED) 808ec125fbbSEdward Tomasz Napierala return (0); 809ec125fbbSEdward Tomasz Napierala 810ec125fbbSEdward Tomasz Napierala return (1); 811ec125fbbSEdward Tomasz Napierala } 812ec125fbbSEdward Tomasz Napierala 813ec125fbbSEdward Tomasz Napierala static int 814ec125fbbSEdward Tomasz Napierala rctl_string_to_rule(char *rulestr, struct rctl_rule **rulep) 815ec125fbbSEdward Tomasz Napierala { 816ec125fbbSEdward Tomasz Napierala int error = 0; 817ec125fbbSEdward Tomasz Napierala char *subjectstr, *subject_idstr, *resourcestr, *actionstr, 818ec125fbbSEdward Tomasz Napierala *amountstr, *perstr; 819ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 820ec125fbbSEdward Tomasz Napierala id_t id; 821ec125fbbSEdward Tomasz Napierala 822ec125fbbSEdward Tomasz Napierala rule = rctl_rule_alloc(M_WAITOK); 823ec125fbbSEdward Tomasz Napierala 824ec125fbbSEdward Tomasz Napierala subjectstr = strsep(&rulestr, ":"); 825ec125fbbSEdward Tomasz Napierala subject_idstr = strsep(&rulestr, ":"); 826ec125fbbSEdward Tomasz Napierala resourcestr = strsep(&rulestr, ":"); 827ec125fbbSEdward Tomasz Napierala actionstr = strsep(&rulestr, "=/"); 828ec125fbbSEdward Tomasz Napierala amountstr = strsep(&rulestr, "/"); 829ec125fbbSEdward Tomasz Napierala perstr = rulestr; 830ec125fbbSEdward Tomasz Napierala 831ec125fbbSEdward Tomasz Napierala if (subjectstr == NULL || subjectstr[0] == '\0') 832ec125fbbSEdward Tomasz Napierala rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED; 833ec125fbbSEdward Tomasz Napierala else { 834ec125fbbSEdward Tomasz Napierala error = str2value(subjectstr, &rule->rr_subject_type, subjectnames); 835ec125fbbSEdward Tomasz Napierala if (error != 0) 836ec125fbbSEdward Tomasz Napierala goto out; 837ec125fbbSEdward Tomasz Napierala } 838ec125fbbSEdward Tomasz Napierala 839ec125fbbSEdward Tomasz Napierala if (subject_idstr == NULL || subject_idstr[0] == '\0') { 840ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = NULL; 841ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = NULL; 842415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = NULL; 843*a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = NULL; 844ec125fbbSEdward Tomasz Napierala } else { 845ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 846ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_UNDEFINED: 847ec125fbbSEdward Tomasz Napierala error = EINVAL; 848ec125fbbSEdward Tomasz Napierala goto out; 849ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 850ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 851ec125fbbSEdward Tomasz Napierala if (error != 0) 852ec125fbbSEdward Tomasz Napierala goto out; 853ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 854ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = pfind(id); 855ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) { 856ec125fbbSEdward Tomasz Napierala error = ESRCH; 857ec125fbbSEdward Tomasz Napierala goto out; 858ec125fbbSEdward Tomasz Napierala } 859ec125fbbSEdward Tomasz Napierala PROC_UNLOCK(rule->rr_subject.rs_proc); 860ec125fbbSEdward Tomasz Napierala break; 861ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 862ec125fbbSEdward Tomasz Napierala error = str2id(subject_idstr, &id); 863ec125fbbSEdward Tomasz Napierala if (error != 0) 864ec125fbbSEdward Tomasz Napierala goto out; 865ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip = uifind(id); 866ec125fbbSEdward Tomasz Napierala break; 867ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 868415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass = 869ec125fbbSEdward Tomasz Napierala loginclass_find(subject_idstr); 870415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) { 871ec125fbbSEdward Tomasz Napierala error = ENAMETOOLONG; 872ec125fbbSEdward Tomasz Napierala goto out; 873ec125fbbSEdward Tomasz Napierala } 874ec125fbbSEdward Tomasz Napierala break; 875ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 876*a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct = 877*a7ad07bfSEdward Tomasz Napierala prison_racct_find(subject_idstr); 878*a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) { 879*a7ad07bfSEdward Tomasz Napierala error = ENAMETOOLONG; 880ec125fbbSEdward Tomasz Napierala goto out; 881ec125fbbSEdward Tomasz Napierala } 882ec125fbbSEdward Tomasz Napierala break; 883ec125fbbSEdward Tomasz Napierala default: 884ec125fbbSEdward Tomasz Napierala panic("rctl_string_to_rule: unknown subject type %d", 885ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 886ec125fbbSEdward Tomasz Napierala } 887ec125fbbSEdward Tomasz Napierala } 888ec125fbbSEdward Tomasz Napierala 889ec125fbbSEdward Tomasz Napierala if (resourcestr == NULL || resourcestr[0] == '\0') 890ec125fbbSEdward Tomasz Napierala rule->rr_resource = RACCT_UNDEFINED; 891ec125fbbSEdward Tomasz Napierala else { 892ec125fbbSEdward Tomasz Napierala error = str2value(resourcestr, &rule->rr_resource, 893ec125fbbSEdward Tomasz Napierala resourcenames); 894ec125fbbSEdward Tomasz Napierala if (error != 0) 895ec125fbbSEdward Tomasz Napierala goto out; 896ec125fbbSEdward Tomasz Napierala } 897ec125fbbSEdward Tomasz Napierala 898ec125fbbSEdward Tomasz Napierala if (actionstr == NULL || actionstr[0] == '\0') 899ec125fbbSEdward Tomasz Napierala rule->rr_action = RCTL_ACTION_UNDEFINED; 900ec125fbbSEdward Tomasz Napierala else { 901ec125fbbSEdward Tomasz Napierala error = str2value(actionstr, &rule->rr_action, actionnames); 902ec125fbbSEdward Tomasz Napierala if (error != 0) 903ec125fbbSEdward Tomasz Napierala goto out; 904ec125fbbSEdward Tomasz Napierala } 905ec125fbbSEdward Tomasz Napierala 906ec125fbbSEdward Tomasz Napierala if (amountstr == NULL || amountstr[0] == '\0') 907ec125fbbSEdward Tomasz Napierala rule->rr_amount = RCTL_AMOUNT_UNDEFINED; 908ec125fbbSEdward Tomasz Napierala else { 909ec125fbbSEdward Tomasz Napierala error = str2int64(amountstr, &rule->rr_amount); 910ec125fbbSEdward Tomasz Napierala if (error != 0) 911ec125fbbSEdward Tomasz Napierala goto out; 912ec125fbbSEdward Tomasz Napierala if (racct_is_in_thousands(rule->rr_resource)) 913ec125fbbSEdward Tomasz Napierala rule->rr_amount *= 1000; 914ec125fbbSEdward Tomasz Napierala } 915ec125fbbSEdward Tomasz Napierala 916ec125fbbSEdward Tomasz Napierala if (perstr == NULL || perstr[0] == '\0') 917ec125fbbSEdward Tomasz Napierala rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED; 918ec125fbbSEdward Tomasz Napierala else { 919ec125fbbSEdward Tomasz Napierala error = str2value(perstr, &rule->rr_per, subjectnames); 920ec125fbbSEdward Tomasz Napierala if (error != 0) 921ec125fbbSEdward Tomasz Napierala goto out; 922ec125fbbSEdward Tomasz Napierala } 923ec125fbbSEdward Tomasz Napierala 924ec125fbbSEdward Tomasz Napierala out: 925ec125fbbSEdward Tomasz Napierala if (error == 0) 926ec125fbbSEdward Tomasz Napierala *rulep = rule; 927ec125fbbSEdward Tomasz Napierala else 928ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 929ec125fbbSEdward Tomasz Napierala 930ec125fbbSEdward Tomasz Napierala return (error); 931ec125fbbSEdward Tomasz Napierala } 932ec125fbbSEdward Tomasz Napierala 933ec125fbbSEdward Tomasz Napierala /* 934ec125fbbSEdward Tomasz Napierala * Link a rule with all the subjects it applies to. 935ec125fbbSEdward Tomasz Napierala */ 936ec125fbbSEdward Tomasz Napierala int 937ec125fbbSEdward Tomasz Napierala rctl_rule_add(struct rctl_rule *rule) 938ec125fbbSEdward Tomasz Napierala { 939ec125fbbSEdward Tomasz Napierala struct proc *p; 940ec125fbbSEdward Tomasz Napierala struct ucred *cred; 941ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 942ec125fbbSEdward Tomasz Napierala struct prison *pr; 943*a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 944ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 945ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule2; 946ec125fbbSEdward Tomasz Napierala int match; 947ec125fbbSEdward Tomasz Napierala 948ec125fbbSEdward Tomasz Napierala KASSERT(rctl_rule_fully_specified(rule), ("rule not fully specified")); 949ec125fbbSEdward Tomasz Napierala 950ec125fbbSEdward Tomasz Napierala /* 951ec125fbbSEdward Tomasz Napierala * Some rules just don't make sense. Note that the one below 952ec125fbbSEdward Tomasz Napierala * cannot be rewritten using racct_is_deniable(); the RACCT_PCTCPU, 953ec125fbbSEdward Tomasz Napierala * for example, is not deniable in the racct sense, but the 954ec125fbbSEdward Tomasz Napierala * limit is enforced in a different way, so "deny" rules for %CPU 955ec125fbbSEdward Tomasz Napierala * do make sense. 956ec125fbbSEdward Tomasz Napierala */ 957ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY && 958ec125fbbSEdward Tomasz Napierala (rule->rr_resource == RACCT_CPU || 959ec125fbbSEdward Tomasz Napierala rule->rr_resource == RACCT_WALLCLOCK)) 960ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 961ec125fbbSEdward Tomasz Napierala 962ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS && 963ec125fbbSEdward Tomasz Napierala racct_is_sloppy(rule->rr_resource)) 964ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 965ec125fbbSEdward Tomasz Napierala 966ec125fbbSEdward Tomasz Napierala /* 967ec125fbbSEdward Tomasz Napierala * Make sure there are no duplicated rules. Also, for the "deny" 968ec125fbbSEdward Tomasz Napierala * rules, remove ones differing only by "amount". 969ec125fbbSEdward Tomasz Napierala */ 970ec125fbbSEdward Tomasz Napierala if (rule->rr_action == RCTL_ACTION_DENY) { 971ec125fbbSEdward Tomasz Napierala rule2 = rctl_rule_duplicate(rule, M_WAITOK); 972ec125fbbSEdward Tomasz Napierala rule2->rr_amount = RCTL_AMOUNT_UNDEFINED; 973ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule2); 974ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule2); 975ec125fbbSEdward Tomasz Napierala } else 976ec125fbbSEdward Tomasz Napierala rctl_rule_remove(rule); 977ec125fbbSEdward Tomasz Napierala 978ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 979ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 980ec125fbbSEdward Tomasz Napierala p = rule->rr_subject.rs_proc; 981ec125fbbSEdward Tomasz Napierala KASSERT(p != NULL, ("rctl_rule_add: NULL proc")); 982ec125fbbSEdward Tomasz Napierala /* 983ec125fbbSEdward Tomasz Napierala * No resource limits for system processes. 984ec125fbbSEdward Tomasz Napierala */ 985ec125fbbSEdward Tomasz Napierala if (p->p_flag & P_SYSTEM) 986ec125fbbSEdward Tomasz Napierala return (EPERM); 987ec125fbbSEdward Tomasz Napierala 988ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 989ec125fbbSEdward Tomasz Napierala /* 990ec125fbbSEdward Tomasz Napierala * In case of per-process rule, we don't have anything more 991ec125fbbSEdward Tomasz Napierala * to do. 992ec125fbbSEdward Tomasz Napierala */ 993ec125fbbSEdward Tomasz Napierala return (0); 994ec125fbbSEdward Tomasz Napierala 995ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 996ec125fbbSEdward Tomasz Napierala uip = rule->rr_subject.rs_uip; 997ec125fbbSEdward Tomasz Napierala KASSERT(uip != NULL, ("rctl_rule_add: NULL uip")); 998ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(uip->ui_racct, rule); 999ec125fbbSEdward Tomasz Napierala break; 1000ec125fbbSEdward Tomasz Napierala 1001ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1002415896e3SEdward Tomasz Napierala lc = rule->rr_subject.rs_loginclass; 1003ec125fbbSEdward Tomasz Napierala KASSERT(lc != NULL, ("rctl_rule_add: NULL loginclass")); 1004ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(lc->lc_racct, rule); 1005ec125fbbSEdward Tomasz Napierala break; 1006ec125fbbSEdward Tomasz Napierala 1007ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1008*a7ad07bfSEdward Tomasz Napierala prr = rule->rr_subject.rs_prison_racct; 1009*a7ad07bfSEdward Tomasz Napierala KASSERT(prr != NULL, ("rctl_rule_add: NULL pr")); 1010*a7ad07bfSEdward Tomasz Napierala rctl_racct_add_rule(prr->prr_racct, rule); 1011ec125fbbSEdward Tomasz Napierala break; 1012ec125fbbSEdward Tomasz Napierala 1013ec125fbbSEdward Tomasz Napierala default: 1014ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1015ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1016ec125fbbSEdward Tomasz Napierala } 1017ec125fbbSEdward Tomasz Napierala 1018ec125fbbSEdward Tomasz Napierala /* 1019ec125fbbSEdward Tomasz Napierala * Now go through all the processes and add the new rule to the ones 1020ec125fbbSEdward Tomasz Napierala * it applies to. 1021ec125fbbSEdward Tomasz Napierala */ 1022ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1023ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1024ec125fbbSEdward Tomasz Napierala if (p->p_flag & P_SYSTEM) 1025ec125fbbSEdward Tomasz Napierala continue; 1026ec125fbbSEdward Tomasz Napierala cred = p->p_ucred; 1027ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1028ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1029ec125fbbSEdward Tomasz Napierala if (cred->cr_uidinfo == rule->rr_subject.rs_uip || 1030ec125fbbSEdward Tomasz Napierala cred->cr_ruidinfo == rule->rr_subject.rs_uip) 1031ec125fbbSEdward Tomasz Napierala break; 1032ec125fbbSEdward Tomasz Napierala continue; 1033ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1034415896e3SEdward Tomasz Napierala if (cred->cr_loginclass == rule->rr_subject.rs_loginclass) 1035ec125fbbSEdward Tomasz Napierala break; 1036ec125fbbSEdward Tomasz Napierala continue; 1037ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1038ec125fbbSEdward Tomasz Napierala match = 0; 1039ec125fbbSEdward Tomasz Napierala for (pr = cred->cr_prison; pr != NULL; pr = pr->pr_parent) { 1040*a7ad07bfSEdward Tomasz Napierala if (pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) { 1041ec125fbbSEdward Tomasz Napierala match = 1; 1042ec125fbbSEdward Tomasz Napierala break; 1043ec125fbbSEdward Tomasz Napierala } 1044ec125fbbSEdward Tomasz Napierala } 1045ec125fbbSEdward Tomasz Napierala if (match) 1046ec125fbbSEdward Tomasz Napierala break; 1047ec125fbbSEdward Tomasz Napierala continue; 1048ec125fbbSEdward Tomasz Napierala default: 1049ec125fbbSEdward Tomasz Napierala panic("rctl_rule_add: unknown subject type %d", 1050ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1051ec125fbbSEdward Tomasz Napierala } 1052ec125fbbSEdward Tomasz Napierala 1053ec125fbbSEdward Tomasz Napierala rctl_racct_add_rule(p->p_racct, rule); 1054ec125fbbSEdward Tomasz Napierala } 1055ec125fbbSEdward Tomasz Napierala 1056ec125fbbSEdward Tomasz Napierala return (0); 1057ec125fbbSEdward Tomasz Napierala } 1058ec125fbbSEdward Tomasz Napierala 1059ec125fbbSEdward Tomasz Napierala static void 1060ec125fbbSEdward Tomasz Napierala rctl_rule_remove_callback(struct racct *racct, void *arg2, void *arg3) 1061ec125fbbSEdward Tomasz Napierala { 1062ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1063ec125fbbSEdward Tomasz Napierala int found = 0; 1064ec125fbbSEdward Tomasz Napierala 1065ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1066ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(racct, filter); 1067ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1068ec125fbbSEdward Tomasz Napierala 1069ec125fbbSEdward Tomasz Napierala *((int *)arg3) += found; 1070ec125fbbSEdward Tomasz Napierala } 1071ec125fbbSEdward Tomasz Napierala 1072ec125fbbSEdward Tomasz Napierala /* 1073ec125fbbSEdward Tomasz Napierala * Remove all rules that match the filter. 1074ec125fbbSEdward Tomasz Napierala */ 1075ec125fbbSEdward Tomasz Napierala int 1076ec125fbbSEdward Tomasz Napierala rctl_rule_remove(struct rctl_rule *filter) 1077ec125fbbSEdward Tomasz Napierala { 1078ec125fbbSEdward Tomasz Napierala int found = 0; 1079ec125fbbSEdward Tomasz Napierala struct proc *p; 1080ec125fbbSEdward Tomasz Napierala 1081ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS && 1082ec125fbbSEdward Tomasz Napierala filter->rr_subject.rs_proc != NULL) { 1083ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1084ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1085ec125fbbSEdward Tomasz Napierala found = rctl_racct_remove_rules(p->p_racct, filter); 1086ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1087ec125fbbSEdward Tomasz Napierala if (found) 1088ec125fbbSEdward Tomasz Napierala return (0); 1089ec125fbbSEdward Tomasz Napierala return (ESRCH); 1090ec125fbbSEdward Tomasz Napierala } 1091ec125fbbSEdward Tomasz Napierala 1092ec125fbbSEdward Tomasz Napierala loginclass_racct_foreach(rctl_rule_remove_callback, filter, 1093ec125fbbSEdward Tomasz Napierala (void *)&found); 1094ec125fbbSEdward Tomasz Napierala ui_racct_foreach(rctl_rule_remove_callback, filter, 1095ec125fbbSEdward Tomasz Napierala (void *)&found); 1096ec125fbbSEdward Tomasz Napierala prison_racct_foreach(rctl_rule_remove_callback, filter, 1097ec125fbbSEdward Tomasz Napierala (void *)&found); 1098ec125fbbSEdward Tomasz Napierala 1099ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1100ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1101ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1102ec125fbbSEdward Tomasz Napierala found += rctl_racct_remove_rules(p->p_racct, filter); 1103ec125fbbSEdward Tomasz Napierala } 1104ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1105ec125fbbSEdward Tomasz Napierala 1106ec125fbbSEdward Tomasz Napierala if (found) 1107ec125fbbSEdward Tomasz Napierala return (0); 1108ec125fbbSEdward Tomasz Napierala return (ESRCH); 1109ec125fbbSEdward Tomasz Napierala } 1110ec125fbbSEdward Tomasz Napierala 1111ec125fbbSEdward Tomasz Napierala /* 1112ec125fbbSEdward Tomasz Napierala * Appends a rule to the sbuf. 1113ec125fbbSEdward Tomasz Napierala */ 1114ec125fbbSEdward Tomasz Napierala static void 1115ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(struct sbuf *sb, const struct rctl_rule *rule) 1116ec125fbbSEdward Tomasz Napierala { 1117ec125fbbSEdward Tomasz Napierala int64_t amount; 1118ec125fbbSEdward Tomasz Napierala 1119ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", rctl_subject_type_name(rule->rr_subject_type)); 1120ec125fbbSEdward Tomasz Napierala 1121ec125fbbSEdward Tomasz Napierala switch (rule->rr_subject_type) { 1122ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1123ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_proc == NULL) 1124ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1125ec125fbbSEdward Tomasz Napierala else 1126ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1127ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc->p_pid); 1128ec125fbbSEdward Tomasz Napierala break; 1129ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1130ec125fbbSEdward Tomasz Napierala if (rule->rr_subject.rs_uip == NULL) 1131ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1132ec125fbbSEdward Tomasz Napierala else 1133ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%d:", 1134ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_uip->ui_uid); 1135ec125fbbSEdward Tomasz Napierala break; 1136ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1137415896e3SEdward Tomasz Napierala if (rule->rr_subject.rs_loginclass == NULL) 1138ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1139ec125fbbSEdward Tomasz Napierala else 1140ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1141415896e3SEdward Tomasz Napierala rule->rr_subject.rs_loginclass->lc_name); 1142ec125fbbSEdward Tomasz Napierala break; 1143ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1144*a7ad07bfSEdward Tomasz Napierala if (rule->rr_subject.rs_prison_racct == NULL) 1145ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ":"); 1146ec125fbbSEdward Tomasz Napierala else 1147ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:", 1148*a7ad07bfSEdward Tomasz Napierala rule->rr_subject.rs_prison_racct->prr_name); 1149ec125fbbSEdward Tomasz Napierala break; 1150ec125fbbSEdward Tomasz Napierala default: 1151ec125fbbSEdward Tomasz Napierala panic("rctl_rule_to_sbuf: unknown subject type %d", 1152ec125fbbSEdward Tomasz Napierala rule->rr_subject_type); 1153ec125fbbSEdward Tomasz Napierala } 1154ec125fbbSEdward Tomasz Napierala 1155ec125fbbSEdward Tomasz Napierala amount = rule->rr_amount; 1156ec125fbbSEdward Tomasz Napierala if (amount != RCTL_AMOUNT_UNDEFINED && 1157ec125fbbSEdward Tomasz Napierala racct_is_in_thousands(rule->rr_resource)) 1158ec125fbbSEdward Tomasz Napierala amount /= 1000; 1159ec125fbbSEdward Tomasz Napierala 1160ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s:%s=%jd", 1161ec125fbbSEdward Tomasz Napierala rctl_resource_name(rule->rr_resource), 1162ec125fbbSEdward Tomasz Napierala rctl_action_name(rule->rr_action), 1163ec125fbbSEdward Tomasz Napierala amount); 1164ec125fbbSEdward Tomasz Napierala 1165ec125fbbSEdward Tomasz Napierala if (rule->rr_per != rule->rr_subject_type) 1166ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "/%s", rctl_subject_type_name(rule->rr_per)); 1167ec125fbbSEdward Tomasz Napierala } 1168ec125fbbSEdward Tomasz Napierala 1169ec125fbbSEdward Tomasz Napierala /* 1170ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to read in input string. 1171ec125fbbSEdward Tomasz Napierala */ 1172ec125fbbSEdward Tomasz Napierala static int 1173ec125fbbSEdward Tomasz Napierala rctl_read_inbuf(char **inputstr, const char *inbufp, size_t inbuflen) 1174ec125fbbSEdward Tomasz Napierala { 1175ec125fbbSEdward Tomasz Napierala int error; 1176ec125fbbSEdward Tomasz Napierala char *str; 1177ec125fbbSEdward Tomasz Napierala 1178ec125fbbSEdward Tomasz Napierala if (inbuflen <= 0) 1179ec125fbbSEdward Tomasz Napierala return (EINVAL); 1180ec125fbbSEdward Tomasz Napierala 1181ec125fbbSEdward Tomasz Napierala str = malloc(inbuflen + 1, M_RCTL, M_WAITOK); 1182ec125fbbSEdward Tomasz Napierala error = copyinstr(inbufp, str, inbuflen, NULL); 1183ec125fbbSEdward Tomasz Napierala if (error != 0) { 1184ec125fbbSEdward Tomasz Napierala free(str, M_RCTL); 1185ec125fbbSEdward Tomasz Napierala return (error); 1186ec125fbbSEdward Tomasz Napierala } 1187ec125fbbSEdward Tomasz Napierala 1188ec125fbbSEdward Tomasz Napierala *inputstr = str; 1189ec125fbbSEdward Tomasz Napierala 1190ec125fbbSEdward Tomasz Napierala return (0); 1191ec125fbbSEdward Tomasz Napierala } 1192ec125fbbSEdward Tomasz Napierala 1193ec125fbbSEdward Tomasz Napierala /* 1194ec125fbbSEdward Tomasz Napierala * Routine used by RCTL syscalls to write out output string. 1195ec125fbbSEdward Tomasz Napierala */ 1196ec125fbbSEdward Tomasz Napierala static int 1197ec125fbbSEdward Tomasz Napierala rctl_write_outbuf(struct sbuf *outputsbuf, char *outbufp, size_t outbuflen) 1198ec125fbbSEdward Tomasz Napierala { 1199ec125fbbSEdward Tomasz Napierala int error; 1200ec125fbbSEdward Tomasz Napierala 1201ec125fbbSEdward Tomasz Napierala if (outputsbuf == NULL) 1202ec125fbbSEdward Tomasz Napierala return (0); 1203ec125fbbSEdward Tomasz Napierala 1204ec125fbbSEdward Tomasz Napierala sbuf_finish(outputsbuf); 1205ec125fbbSEdward Tomasz Napierala if (outbuflen < sbuf_len(outputsbuf) + 1) { 1206ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1207ec125fbbSEdward Tomasz Napierala return (ERANGE); 1208ec125fbbSEdward Tomasz Napierala } 1209ec125fbbSEdward Tomasz Napierala error = copyout(sbuf_data(outputsbuf), outbufp, 1210ec125fbbSEdward Tomasz Napierala sbuf_len(outputsbuf) + 1); 1211ec125fbbSEdward Tomasz Napierala sbuf_delete(outputsbuf); 1212ec125fbbSEdward Tomasz Napierala return (error); 1213ec125fbbSEdward Tomasz Napierala } 1214ec125fbbSEdward Tomasz Napierala 1215ec125fbbSEdward Tomasz Napierala static struct sbuf * 1216ec125fbbSEdward Tomasz Napierala rctl_racct_to_sbuf(struct racct *racct, int sloppy) 1217ec125fbbSEdward Tomasz Napierala { 1218ec125fbbSEdward Tomasz Napierala int i; 1219ec125fbbSEdward Tomasz Napierala int64_t amount; 1220ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1221ec125fbbSEdward Tomasz Napierala 1222ec125fbbSEdward Tomasz Napierala sb = sbuf_new_auto(); 1223ec125fbbSEdward Tomasz Napierala for (i = 0; i <= RACCT_MAX; i++) { 1224ec125fbbSEdward Tomasz Napierala if (sloppy == 0 && racct_is_sloppy(i)) 1225ec125fbbSEdward Tomasz Napierala continue; 1226ec125fbbSEdward Tomasz Napierala amount = racct->r_resources[i]; 1227ec125fbbSEdward Tomasz Napierala if (racct_is_in_thousands(i)) 1228ec125fbbSEdward Tomasz Napierala amount /= 1000; 1229ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, "%s=%jd,", rctl_resource_name(i), amount); 1230ec125fbbSEdward Tomasz Napierala } 1231ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1232ec125fbbSEdward Tomasz Napierala return (sb); 1233ec125fbbSEdward Tomasz Napierala } 1234ec125fbbSEdward Tomasz Napierala 1235ec125fbbSEdward Tomasz Napierala int 1236ec125fbbSEdward Tomasz Napierala rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1237ec125fbbSEdward Tomasz Napierala { 1238ec125fbbSEdward Tomasz Napierala int error; 1239ec125fbbSEdward Tomasz Napierala char *inputstr; 1240ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1241ec125fbbSEdward Tomasz Napierala struct sbuf *outputsbuf = NULL; 1242ec125fbbSEdward Tomasz Napierala struct proc *p; 1243ec125fbbSEdward Tomasz Napierala struct uidinfo *uip; 1244ec125fbbSEdward Tomasz Napierala struct loginclass *lc; 1245*a7ad07bfSEdward Tomasz Napierala struct prison_racct *prr; 1246ec125fbbSEdward Tomasz Napierala 1247415896e3SEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RACCT); 1248ec125fbbSEdward Tomasz Napierala if (error != 0) 1249ec125fbbSEdward Tomasz Napierala return (error); 1250ec125fbbSEdward Tomasz Napierala 1251ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1252ec125fbbSEdward Tomasz Napierala if (error != 0) 1253ec125fbbSEdward Tomasz Napierala return (error); 1254ec125fbbSEdward Tomasz Napierala 1255ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1256ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1257ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1258ec125fbbSEdward Tomasz Napierala if (error != 0) { 1259ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1260ec125fbbSEdward Tomasz Napierala return (error); 1261ec125fbbSEdward Tomasz Napierala } 1262ec125fbbSEdward Tomasz Napierala 1263ec125fbbSEdward Tomasz Napierala switch (filter->rr_subject_type) { 1264ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_PROCESS: 1265ec125fbbSEdward Tomasz Napierala p = filter->rr_subject.rs_proc; 1266ec125fbbSEdward Tomasz Napierala if (p == NULL) { 1267ec125fbbSEdward Tomasz Napierala error = EINVAL; 1268ec125fbbSEdward Tomasz Napierala goto out; 1269ec125fbbSEdward Tomasz Napierala } 1270ec125fbbSEdward Tomasz Napierala if (p->p_flag & P_SYSTEM) { 1271ec125fbbSEdward Tomasz Napierala error = EINVAL; 1272ec125fbbSEdward Tomasz Napierala goto out; 1273ec125fbbSEdward Tomasz Napierala } 1274ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0); 1275ec125fbbSEdward Tomasz Napierala break; 1276ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_USER: 1277ec125fbbSEdward Tomasz Napierala uip = filter->rr_subject.rs_uip; 1278ec125fbbSEdward Tomasz Napierala if (uip == NULL) { 1279ec125fbbSEdward Tomasz Napierala error = EINVAL; 1280ec125fbbSEdward Tomasz Napierala goto out; 1281ec125fbbSEdward Tomasz Napierala } 1282ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1); 1283ec125fbbSEdward Tomasz Napierala break; 1284ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_LOGINCLASS: 1285415896e3SEdward Tomasz Napierala lc = filter->rr_subject.rs_loginclass; 1286ec125fbbSEdward Tomasz Napierala if (lc == NULL) { 1287ec125fbbSEdward Tomasz Napierala error = EINVAL; 1288ec125fbbSEdward Tomasz Napierala goto out; 1289ec125fbbSEdward Tomasz Napierala } 1290ec125fbbSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(lc->lc_racct, 1); 1291ec125fbbSEdward Tomasz Napierala break; 1292ec125fbbSEdward Tomasz Napierala case RCTL_SUBJECT_TYPE_JAIL: 1293*a7ad07bfSEdward Tomasz Napierala prr = filter->rr_subject.rs_prison_racct; 1294*a7ad07bfSEdward Tomasz Napierala if (prr == NULL) { 1295ec125fbbSEdward Tomasz Napierala error = EINVAL; 1296ec125fbbSEdward Tomasz Napierala goto out; 1297ec125fbbSEdward Tomasz Napierala } 1298*a7ad07bfSEdward Tomasz Napierala outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1); 1299ec125fbbSEdward Tomasz Napierala break; 1300ec125fbbSEdward Tomasz Napierala default: 1301ec125fbbSEdward Tomasz Napierala error = EINVAL; 1302ec125fbbSEdward Tomasz Napierala } 1303ec125fbbSEdward Tomasz Napierala out: 1304ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1305ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1306ec125fbbSEdward Tomasz Napierala if (error != 0) 1307ec125fbbSEdward Tomasz Napierala return (error); 1308ec125fbbSEdward Tomasz Napierala 1309ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen); 1310ec125fbbSEdward Tomasz Napierala 1311ec125fbbSEdward Tomasz Napierala return (error); 1312ec125fbbSEdward Tomasz Napierala } 1313ec125fbbSEdward Tomasz Napierala 1314ec125fbbSEdward Tomasz Napierala static void 1315ec125fbbSEdward Tomasz Napierala rctl_get_rules_callback(struct racct *racct, void *arg2, void *arg3) 1316ec125fbbSEdward Tomasz Napierala { 1317ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter = (struct rctl_rule *)arg2; 1318ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1319ec125fbbSEdward Tomasz Napierala struct sbuf *sb = (struct sbuf *)arg3; 1320ec125fbbSEdward Tomasz Napierala 1321ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1322ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &racct->r_rule_links, rrl_next) { 1323ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1324ec125fbbSEdward Tomasz Napierala continue; 1325ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1326ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1327ec125fbbSEdward Tomasz Napierala } 1328ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1329ec125fbbSEdward Tomasz Napierala } 1330ec125fbbSEdward Tomasz Napierala 1331ec125fbbSEdward Tomasz Napierala int 1332ec125fbbSEdward Tomasz Napierala rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1333ec125fbbSEdward Tomasz Napierala { 1334ec125fbbSEdward Tomasz Napierala int error; 1335ec125fbbSEdward Tomasz Napierala size_t bufsize = RCTL_DEFAULT_BUFSIZE; 1336ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1337ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1338ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1339ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1340ec125fbbSEdward Tomasz Napierala struct proc *p; 1341ec125fbbSEdward Tomasz Napierala 1342ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_RULES); 1343ec125fbbSEdward Tomasz Napierala if (error != 0) 1344ec125fbbSEdward Tomasz Napierala return (error); 1345ec125fbbSEdward Tomasz Napierala 1346ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1347ec125fbbSEdward Tomasz Napierala if (error != 0) 1348ec125fbbSEdward Tomasz Napierala return (error); 1349ec125fbbSEdward Tomasz Napierala 1350ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1351ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1352ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1353ec125fbbSEdward Tomasz Napierala if (error != 0) { 1354ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1355ec125fbbSEdward Tomasz Napierala return (error); 1356ec125fbbSEdward Tomasz Napierala } 1357ec125fbbSEdward Tomasz Napierala 1358ec125fbbSEdward Tomasz Napierala again: 1359ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1360ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1361ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1362ec125fbbSEdward Tomasz Napierala 1363ec125fbbSEdward Tomasz Napierala sx_assert(&allproc_lock, SA_LOCKED); 1364ec125fbbSEdward Tomasz Napierala FOREACH_PROC_IN_SYSTEM(p) { 1365ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1366ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1367ec125fbbSEdward Tomasz Napierala /* 1368ec125fbbSEdward Tomasz Napierala * Non-process rules will be added to the buffer later. 1369ec125fbbSEdward Tomasz Napierala * Adding them here would result in duplicated output. 1370ec125fbbSEdward Tomasz Napierala */ 1371ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type != 1372ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1373ec125fbbSEdward Tomasz Napierala continue; 1374ec125fbbSEdward Tomasz Napierala if (!rctl_rule_matches(link->rrl_rule, filter)) 1375ec125fbbSEdward Tomasz Napierala continue; 1376ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1377ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1378ec125fbbSEdward Tomasz Napierala } 1379ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1380ec125fbbSEdward Tomasz Napierala } 1381ec125fbbSEdward Tomasz Napierala 1382ec125fbbSEdward Tomasz Napierala loginclass_racct_foreach(rctl_get_rules_callback, filter, sb); 1383ec125fbbSEdward Tomasz Napierala ui_racct_foreach(rctl_get_rules_callback, filter, sb); 1384ec125fbbSEdward Tomasz Napierala prison_racct_foreach(rctl_get_rules_callback, filter, sb); 1385ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 1386ec125fbbSEdward Tomasz Napierala sbuf_delete(sb); 1387ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1388ec125fbbSEdward Tomasz Napierala bufsize *= 4; 1389ec125fbbSEdward Tomasz Napierala goto again; 1390ec125fbbSEdward Tomasz Napierala } 1391ec125fbbSEdward Tomasz Napierala 1392ec125fbbSEdward Tomasz Napierala /* 1393ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1394ec125fbbSEdward Tomasz Napierala */ 1395ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1396ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1397ec125fbbSEdward Tomasz Napierala 1398ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 1399ec125fbbSEdward Tomasz Napierala 1400ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1401ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1402ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1403ec125fbbSEdward Tomasz Napierala return (error); 1404ec125fbbSEdward Tomasz Napierala } 1405ec125fbbSEdward Tomasz Napierala 1406ec125fbbSEdward Tomasz Napierala int 1407ec125fbbSEdward Tomasz Napierala rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1408ec125fbbSEdward Tomasz Napierala { 1409ec125fbbSEdward Tomasz Napierala int error; 1410ec125fbbSEdward Tomasz Napierala size_t bufsize = RCTL_DEFAULT_BUFSIZE; 1411ec125fbbSEdward Tomasz Napierala char *inputstr, *buf; 1412ec125fbbSEdward Tomasz Napierala struct sbuf *sb; 1413ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1414ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1415ec125fbbSEdward Tomasz Napierala 1416ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_GET_LIMITS); 1417ec125fbbSEdward Tomasz Napierala if (error != 0) 1418ec125fbbSEdward Tomasz Napierala return (error); 1419ec125fbbSEdward Tomasz Napierala 1420ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1421ec125fbbSEdward Tomasz Napierala if (error != 0) 1422ec125fbbSEdward Tomasz Napierala return (error); 1423ec125fbbSEdward Tomasz Napierala 1424ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1425ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1426ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1427ec125fbbSEdward Tomasz Napierala if (error != 0) { 1428ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1429ec125fbbSEdward Tomasz Napierala return (error); 1430ec125fbbSEdward Tomasz Napierala } 1431ec125fbbSEdward Tomasz Napierala 1432ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) { 1433ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1434ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1435ec125fbbSEdward Tomasz Napierala return (EINVAL); 1436ec125fbbSEdward Tomasz Napierala } 1437ec125fbbSEdward Tomasz Napierala if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) { 1438ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1439ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1440ec125fbbSEdward Tomasz Napierala return (EOPNOTSUPP); 1441ec125fbbSEdward Tomasz Napierala } 1442ec125fbbSEdward Tomasz Napierala if (filter->rr_subject.rs_proc == NULL) { 1443ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1444ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1445ec125fbbSEdward Tomasz Napierala return (EINVAL); 1446ec125fbbSEdward Tomasz Napierala } 1447ec125fbbSEdward Tomasz Napierala 1448ec125fbbSEdward Tomasz Napierala again: 1449ec125fbbSEdward Tomasz Napierala buf = malloc(bufsize, M_RCTL, M_WAITOK); 1450ec125fbbSEdward Tomasz Napierala sb = sbuf_new(NULL, buf, bufsize, SBUF_FIXEDLEN); 1451ec125fbbSEdward Tomasz Napierala KASSERT(sb != NULL, ("sbuf_new failed")); 1452ec125fbbSEdward Tomasz Napierala 1453ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1454ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links, 1455ec125fbbSEdward Tomasz Napierala rrl_next) { 1456ec125fbbSEdward Tomasz Napierala rctl_rule_to_sbuf(sb, link->rrl_rule); 1457ec125fbbSEdward Tomasz Napierala sbuf_printf(sb, ","); 1458ec125fbbSEdward Tomasz Napierala } 1459ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1460ec125fbbSEdward Tomasz Napierala if (sbuf_error(sb) == ENOMEM) { 1461ec125fbbSEdward Tomasz Napierala sbuf_delete(sb); 1462ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1463ec125fbbSEdward Tomasz Napierala bufsize *= 4; 1464ec125fbbSEdward Tomasz Napierala goto again; 1465ec125fbbSEdward Tomasz Napierala } 1466ec125fbbSEdward Tomasz Napierala 1467ec125fbbSEdward Tomasz Napierala /* 1468ec125fbbSEdward Tomasz Napierala * Remove trailing ",". 1469ec125fbbSEdward Tomasz Napierala */ 1470ec125fbbSEdward Tomasz Napierala if (sbuf_len(sb) > 0) 1471ec125fbbSEdward Tomasz Napierala sbuf_setpos(sb, sbuf_len(sb) - 1); 1472ec125fbbSEdward Tomasz Napierala 1473ec125fbbSEdward Tomasz Napierala error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen); 1474ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1475ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1476ec125fbbSEdward Tomasz Napierala free(buf, M_RCTL); 1477ec125fbbSEdward Tomasz Napierala return (error); 1478ec125fbbSEdward Tomasz Napierala } 1479ec125fbbSEdward Tomasz Napierala 1480ec125fbbSEdward Tomasz Napierala int 1481ec125fbbSEdward Tomasz Napierala rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1482ec125fbbSEdward Tomasz Napierala { 1483ec125fbbSEdward Tomasz Napierala int error; 1484ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1485ec125fbbSEdward Tomasz Napierala char *inputstr; 1486ec125fbbSEdward Tomasz Napierala 1487ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_ADD_RULE); 1488ec125fbbSEdward Tomasz Napierala if (error != 0) 1489ec125fbbSEdward Tomasz Napierala return (error); 1490ec125fbbSEdward Tomasz Napierala 1491ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1492ec125fbbSEdward Tomasz Napierala if (error != 0) 1493ec125fbbSEdward Tomasz Napierala return (error); 1494ec125fbbSEdward Tomasz Napierala 1495ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1496ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &rule); 1497ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1498ec125fbbSEdward Tomasz Napierala if (error != 0) { 1499ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1500ec125fbbSEdward Tomasz Napierala return (error); 1501ec125fbbSEdward Tomasz Napierala } 1502ec125fbbSEdward Tomasz Napierala /* 1503ec125fbbSEdward Tomasz Napierala * The 'per' part of a rule is optional. 1504ec125fbbSEdward Tomasz Napierala */ 1505ec125fbbSEdward Tomasz Napierala if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED && 1506ec125fbbSEdward Tomasz Napierala rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) 1507ec125fbbSEdward Tomasz Napierala rule->rr_per = rule->rr_subject_type; 1508ec125fbbSEdward Tomasz Napierala 1509ec125fbbSEdward Tomasz Napierala if (!rctl_rule_fully_specified(rule)) { 1510ec125fbbSEdward Tomasz Napierala error = EINVAL; 1511ec125fbbSEdward Tomasz Napierala goto out; 1512ec125fbbSEdward Tomasz Napierala } 1513ec125fbbSEdward Tomasz Napierala 1514ec125fbbSEdward Tomasz Napierala error = rctl_rule_add(rule); 1515ec125fbbSEdward Tomasz Napierala 1516ec125fbbSEdward Tomasz Napierala out: 1517ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1518ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1519ec125fbbSEdward Tomasz Napierala return (error); 1520ec125fbbSEdward Tomasz Napierala } 1521ec125fbbSEdward Tomasz Napierala 1522ec125fbbSEdward Tomasz Napierala int 1523ec125fbbSEdward Tomasz Napierala rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1524ec125fbbSEdward Tomasz Napierala { 1525ec125fbbSEdward Tomasz Napierala int error; 1526ec125fbbSEdward Tomasz Napierala struct rctl_rule *filter; 1527ec125fbbSEdward Tomasz Napierala char *inputstr; 1528ec125fbbSEdward Tomasz Napierala 1529ec125fbbSEdward Tomasz Napierala error = priv_check(td, PRIV_RCTL_REMOVE_RULE); 1530ec125fbbSEdward Tomasz Napierala if (error != 0) 1531ec125fbbSEdward Tomasz Napierala return (error); 1532ec125fbbSEdward Tomasz Napierala 1533ec125fbbSEdward Tomasz Napierala error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen); 1534ec125fbbSEdward Tomasz Napierala if (error != 0) 1535ec125fbbSEdward Tomasz Napierala return (error); 1536ec125fbbSEdward Tomasz Napierala 1537ec125fbbSEdward Tomasz Napierala sx_slock(&allproc_lock); 1538ec125fbbSEdward Tomasz Napierala error = rctl_string_to_rule(inputstr, &filter); 1539ec125fbbSEdward Tomasz Napierala free(inputstr, M_RCTL); 1540ec125fbbSEdward Tomasz Napierala if (error != 0) { 1541ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1542ec125fbbSEdward Tomasz Napierala return (error); 1543ec125fbbSEdward Tomasz Napierala } 1544ec125fbbSEdward Tomasz Napierala 1545ec125fbbSEdward Tomasz Napierala error = rctl_rule_remove(filter); 1546ec125fbbSEdward Tomasz Napierala rctl_rule_release(filter); 1547ec125fbbSEdward Tomasz Napierala sx_sunlock(&allproc_lock); 1548ec125fbbSEdward Tomasz Napierala 1549ec125fbbSEdward Tomasz Napierala return (error); 1550ec125fbbSEdward Tomasz Napierala } 1551ec125fbbSEdward Tomasz Napierala 1552ec125fbbSEdward Tomasz Napierala /* 1553ec125fbbSEdward Tomasz Napierala * Update RCTL rule list after credential change. 1554ec125fbbSEdward Tomasz Napierala */ 1555ec125fbbSEdward Tomasz Napierala void 1556ec125fbbSEdward Tomasz Napierala rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred) 1557ec125fbbSEdward Tomasz Napierala { 1558ec125fbbSEdward Tomasz Napierala int rulecnt, i; 1559ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link, *newlink; 1560ec125fbbSEdward Tomasz Napierala struct uidinfo *newuip; 1561ec125fbbSEdward Tomasz Napierala struct loginclass *newlc; 1562*a7ad07bfSEdward Tomasz Napierala struct prison_racct *newprr; 1563ec125fbbSEdward Tomasz Napierala LIST_HEAD(, rctl_rule_link) newrules; 1564ec125fbbSEdward Tomasz Napierala 1565ec125fbbSEdward Tomasz Napierala newuip = newcred->cr_ruidinfo; 1566ec125fbbSEdward Tomasz Napierala newlc = newcred->cr_loginclass; 1567*a7ad07bfSEdward Tomasz Napierala newprr = newcred->cr_prison->pr_prison_racct; 1568ec125fbbSEdward Tomasz Napierala 1569ec125fbbSEdward Tomasz Napierala LIST_INIT(&newrules); 1570ec125fbbSEdward Tomasz Napierala 1571ec125fbbSEdward Tomasz Napierala again: 1572ec125fbbSEdward Tomasz Napierala /* 1573ec125fbbSEdward Tomasz Napierala * First, count the rules that apply to the process with new 1574ec125fbbSEdward Tomasz Napierala * credentials. 1575ec125fbbSEdward Tomasz Napierala */ 1576ec125fbbSEdward Tomasz Napierala rulecnt = 0; 1577ec125fbbSEdward Tomasz Napierala rw_rlock(&rctl_lock); 1578ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1579ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1580ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) 1581ec125fbbSEdward Tomasz Napierala rulecnt++; 1582ec125fbbSEdward Tomasz Napierala } 1583ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) 1584ec125fbbSEdward Tomasz Napierala rulecnt++; 1585ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) 1586ec125fbbSEdward Tomasz Napierala rulecnt++; 1587*a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) 1588ec125fbbSEdward Tomasz Napierala rulecnt++; 1589ec125fbbSEdward Tomasz Napierala rw_runlock(&rctl_lock); 1590ec125fbbSEdward Tomasz Napierala 1591ec125fbbSEdward Tomasz Napierala /* 1592ec125fbbSEdward Tomasz Napierala * Create temporary list. We've dropped the rctl_lock in order 1593ec125fbbSEdward Tomasz Napierala * to use M_WAITOK. 1594ec125fbbSEdward Tomasz Napierala */ 1595ec125fbbSEdward Tomasz Napierala for (i = 0; i < rulecnt; i++) { 1596ec125fbbSEdward Tomasz Napierala newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK); 1597ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = NULL; 1598ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&newrules, newlink, rrl_next); 1599ec125fbbSEdward Tomasz Napierala } 1600ec125fbbSEdward Tomasz Napierala 1601ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1602ec125fbbSEdward Tomasz Napierala 1603ec125fbbSEdward Tomasz Napierala /* 1604ec125fbbSEdward Tomasz Napierala * Assign rules to the newly allocated list entries. 1605ec125fbbSEdward Tomasz Napierala */ 1606ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1607ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) { 1608ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1609ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1610ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1611ec125fbbSEdward Tomasz Napierala goto goaround; 1612ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1613ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1614ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1615ec125fbbSEdward Tomasz Napierala rulecnt--; 1616ec125fbbSEdward Tomasz Napierala } 1617ec125fbbSEdward Tomasz Napierala } 1618ec125fbbSEdward Tomasz Napierala 1619ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) { 1620ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1621ec125fbbSEdward Tomasz Napierala goto goaround; 1622ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1623ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1624ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1625ec125fbbSEdward Tomasz Napierala rulecnt--; 1626ec125fbbSEdward Tomasz Napierala } 1627ec125fbbSEdward Tomasz Napierala 1628ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) { 1629ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1630ec125fbbSEdward Tomasz Napierala goto goaround; 1631ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1632ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1633ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1634ec125fbbSEdward Tomasz Napierala rulecnt--; 1635ec125fbbSEdward Tomasz Napierala } 1636ec125fbbSEdward Tomasz Napierala 1637*a7ad07bfSEdward Tomasz Napierala LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) { 1638ec125fbbSEdward Tomasz Napierala if (newlink == NULL) 1639ec125fbbSEdward Tomasz Napierala goto goaround; 1640ec125fbbSEdward Tomasz Napierala rctl_rule_acquire(link->rrl_rule); 1641ec125fbbSEdward Tomasz Napierala newlink->rrl_rule = link->rrl_rule; 1642ec125fbbSEdward Tomasz Napierala newlink = LIST_NEXT(newlink, rrl_next); 1643ec125fbbSEdward Tomasz Napierala rulecnt--; 1644ec125fbbSEdward Tomasz Napierala } 1645ec125fbbSEdward Tomasz Napierala 1646ec125fbbSEdward Tomasz Napierala if (rulecnt == 0) { 1647ec125fbbSEdward Tomasz Napierala /* 1648ec125fbbSEdward Tomasz Napierala * Free the old rule list. 1649ec125fbbSEdward Tomasz Napierala */ 1650ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&p->p_racct->r_rule_links)) { 1651ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&p->p_racct->r_rule_links); 1652ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1653ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1654ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1655ec125fbbSEdward Tomasz Napierala } 1656ec125fbbSEdward Tomasz Napierala 1657ec125fbbSEdward Tomasz Napierala /* 1658ec125fbbSEdward Tomasz Napierala * Replace lists and we're done. 1659ec125fbbSEdward Tomasz Napierala * 1660ec125fbbSEdward Tomasz Napierala * XXX: Is there any way to switch list heads instead 1661ec125fbbSEdward Tomasz Napierala * of iterating here? 1662ec125fbbSEdward Tomasz Napierala */ 1663ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1664ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1665ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1666ec125fbbSEdward Tomasz Napierala LIST_INSERT_HEAD(&p->p_racct->r_rule_links, 1667ec125fbbSEdward Tomasz Napierala newlink, rrl_next); 1668ec125fbbSEdward Tomasz Napierala } 1669ec125fbbSEdward Tomasz Napierala 1670ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1671ec125fbbSEdward Tomasz Napierala 1672ec125fbbSEdward Tomasz Napierala return; 1673ec125fbbSEdward Tomasz Napierala } 1674ec125fbbSEdward Tomasz Napierala 1675ec125fbbSEdward Tomasz Napierala goaround: 1676ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1677ec125fbbSEdward Tomasz Napierala 1678ec125fbbSEdward Tomasz Napierala /* 1679ec125fbbSEdward Tomasz Napierala * Rule list changed while we were not holding the rctl_lock. 1680ec125fbbSEdward Tomasz Napierala * Free the new list and try again. 1681ec125fbbSEdward Tomasz Napierala */ 1682ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&newrules)) { 1683ec125fbbSEdward Tomasz Napierala newlink = LIST_FIRST(&newrules); 1684ec125fbbSEdward Tomasz Napierala LIST_REMOVE(newlink, rrl_next); 1685ec125fbbSEdward Tomasz Napierala if (newlink->rrl_rule != NULL) 1686ec125fbbSEdward Tomasz Napierala rctl_rule_release(newlink->rrl_rule); 1687ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, newlink); 1688ec125fbbSEdward Tomasz Napierala } 1689ec125fbbSEdward Tomasz Napierala 1690ec125fbbSEdward Tomasz Napierala goto again; 1691ec125fbbSEdward Tomasz Napierala } 1692ec125fbbSEdward Tomasz Napierala 1693ec125fbbSEdward Tomasz Napierala /* 1694ec125fbbSEdward Tomasz Napierala * Assign RCTL rules to the newly created process. 1695ec125fbbSEdward Tomasz Napierala */ 1696ec125fbbSEdward Tomasz Napierala int 1697ec125fbbSEdward Tomasz Napierala rctl_proc_fork(struct proc *parent, struct proc *child) 1698ec125fbbSEdward Tomasz Napierala { 1699ec125fbbSEdward Tomasz Napierala int error; 1700ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1701ec125fbbSEdward Tomasz Napierala struct rctl_rule *rule; 1702ec125fbbSEdward Tomasz Napierala 1703ec125fbbSEdward Tomasz Napierala LIST_INIT(&child->p_racct->r_rule_links); 1704ec125fbbSEdward Tomasz Napierala 1705ec125fbbSEdward Tomasz Napierala /* 1706ec125fbbSEdward Tomasz Napierala * No limits for kernel processes. 1707ec125fbbSEdward Tomasz Napierala */ 1708ec125fbbSEdward Tomasz Napierala if (child->p_flag & P_SYSTEM) 1709ec125fbbSEdward Tomasz Napierala return (0); 1710ec125fbbSEdward Tomasz Napierala 1711ec125fbbSEdward Tomasz Napierala /* 1712ec125fbbSEdward Tomasz Napierala * Nothing to inherit from P_SYSTEM parents. 1713ec125fbbSEdward Tomasz Napierala */ 1714ec125fbbSEdward Tomasz Napierala if (parent->p_racct == NULL) { 1715ec125fbbSEdward Tomasz Napierala KASSERT(parent->p_flag & P_SYSTEM, 1716ec125fbbSEdward Tomasz Napierala ("non-system process without racct; p = %p", parent)); 1717ec125fbbSEdward Tomasz Napierala return (0); 1718ec125fbbSEdward Tomasz Napierala } 1719ec125fbbSEdward Tomasz Napierala 1720ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1721ec125fbbSEdward Tomasz Napierala 1722ec125fbbSEdward Tomasz Napierala /* 1723ec125fbbSEdward Tomasz Napierala * Go through limits applicable to the parent and assign them 1724ec125fbbSEdward Tomasz Napierala * to the child. Rules with 'process' subject have to be duplicated 1725ec125fbbSEdward Tomasz Napierala * in order to make their rr_subject point to the new process. 1726ec125fbbSEdward Tomasz Napierala */ 1727ec125fbbSEdward Tomasz Napierala LIST_FOREACH(link, &parent->p_racct->r_rule_links, rrl_next) { 1728ec125fbbSEdward Tomasz Napierala if (link->rrl_rule->rr_subject_type == 1729ec125fbbSEdward Tomasz Napierala RCTL_SUBJECT_TYPE_PROCESS) { 1730ec125fbbSEdward Tomasz Napierala rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT); 1731ec125fbbSEdward Tomasz Napierala if (rule == NULL) 1732ec125fbbSEdward Tomasz Napierala goto fail; 1733ec125fbbSEdward Tomasz Napierala KASSERT(rule->rr_subject.rs_proc == parent, 1734ec125fbbSEdward Tomasz Napierala ("rule->rr_subject.rs_proc != parent")); 1735ec125fbbSEdward Tomasz Napierala rule->rr_subject.rs_proc = child; 1736ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1737ec125fbbSEdward Tomasz Napierala rule); 1738ec125fbbSEdward Tomasz Napierala rctl_rule_release(rule); 1739ec125fbbSEdward Tomasz Napierala if (error != 0) 1740ec125fbbSEdward Tomasz Napierala goto fail; 1741ec125fbbSEdward Tomasz Napierala } else { 1742ec125fbbSEdward Tomasz Napierala error = rctl_racct_add_rule_locked(child->p_racct, 1743ec125fbbSEdward Tomasz Napierala link->rrl_rule); 1744ec125fbbSEdward Tomasz Napierala if (error != 0) 1745ec125fbbSEdward Tomasz Napierala goto fail; 1746ec125fbbSEdward Tomasz Napierala } 1747ec125fbbSEdward Tomasz Napierala } 1748ec125fbbSEdward Tomasz Napierala 1749ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1750ec125fbbSEdward Tomasz Napierala return (0); 1751ec125fbbSEdward Tomasz Napierala 1752ec125fbbSEdward Tomasz Napierala fail: 1753ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&child->p_racct->r_rule_links)) { 1754ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&child->p_racct->r_rule_links); 1755ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1756ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1757ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1758ec125fbbSEdward Tomasz Napierala } 1759ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1760ec125fbbSEdward Tomasz Napierala return (EAGAIN); 1761ec125fbbSEdward Tomasz Napierala } 1762ec125fbbSEdward Tomasz Napierala 1763ec125fbbSEdward Tomasz Napierala /* 1764ec125fbbSEdward Tomasz Napierala * Release rules attached to the racct. 1765ec125fbbSEdward Tomasz Napierala */ 1766ec125fbbSEdward Tomasz Napierala void 1767ec125fbbSEdward Tomasz Napierala rctl_racct_release(struct racct *racct) 1768ec125fbbSEdward Tomasz Napierala { 1769ec125fbbSEdward Tomasz Napierala struct rctl_rule_link *link; 1770ec125fbbSEdward Tomasz Napierala 1771ec125fbbSEdward Tomasz Napierala rw_wlock(&rctl_lock); 1772ec125fbbSEdward Tomasz Napierala while (!LIST_EMPTY(&racct->r_rule_links)) { 1773ec125fbbSEdward Tomasz Napierala link = LIST_FIRST(&racct->r_rule_links); 1774ec125fbbSEdward Tomasz Napierala LIST_REMOVE(link, rrl_next); 1775ec125fbbSEdward Tomasz Napierala rctl_rule_release(link->rrl_rule); 1776ec125fbbSEdward Tomasz Napierala uma_zfree(rctl_rule_link_zone, link); 1777ec125fbbSEdward Tomasz Napierala } 1778ec125fbbSEdward Tomasz Napierala rw_wunlock(&rctl_lock); 1779ec125fbbSEdward Tomasz Napierala } 1780ec125fbbSEdward Tomasz Napierala 1781ec125fbbSEdward Tomasz Napierala static void 1782ec125fbbSEdward Tomasz Napierala rctl_init(void) 1783ec125fbbSEdward Tomasz Napierala { 1784ec125fbbSEdward Tomasz Napierala 1785ec125fbbSEdward Tomasz Napierala rctl_rule_link_zone = uma_zcreate("rctl_rule_link", 1786ec125fbbSEdward Tomasz Napierala sizeof(struct rctl_rule_link), NULL, NULL, NULL, NULL, 1787ec125fbbSEdward Tomasz Napierala UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1788ec125fbbSEdward Tomasz Napierala rctl_rule_zone = uma_zcreate("rctl_rule", sizeof(struct rctl_rule), 1789ec125fbbSEdward Tomasz Napierala NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1790ec125fbbSEdward Tomasz Napierala } 1791ec125fbbSEdward Tomasz Napierala 1792ec125fbbSEdward Tomasz Napierala #else /* !RCTL */ 1793ec125fbbSEdward Tomasz Napierala 1794ec125fbbSEdward Tomasz Napierala int 1795ec125fbbSEdward Tomasz Napierala rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap) 1796ec125fbbSEdward Tomasz Napierala { 1797ec125fbbSEdward Tomasz Napierala 1798ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1799ec125fbbSEdward Tomasz Napierala } 1800ec125fbbSEdward Tomasz Napierala 1801ec125fbbSEdward Tomasz Napierala int 1802ec125fbbSEdward Tomasz Napierala rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap) 1803ec125fbbSEdward Tomasz Napierala { 1804ec125fbbSEdward Tomasz Napierala 1805ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1806ec125fbbSEdward Tomasz Napierala } 1807ec125fbbSEdward Tomasz Napierala 1808ec125fbbSEdward Tomasz Napierala int 1809ec125fbbSEdward Tomasz Napierala rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap) 1810ec125fbbSEdward Tomasz Napierala { 1811ec125fbbSEdward Tomasz Napierala 1812ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1813ec125fbbSEdward Tomasz Napierala } 1814ec125fbbSEdward Tomasz Napierala 1815ec125fbbSEdward Tomasz Napierala int 1816ec125fbbSEdward Tomasz Napierala rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap) 1817ec125fbbSEdward Tomasz Napierala { 1818ec125fbbSEdward Tomasz Napierala 1819ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1820ec125fbbSEdward Tomasz Napierala } 1821ec125fbbSEdward Tomasz Napierala 1822ec125fbbSEdward Tomasz Napierala int 1823ec125fbbSEdward Tomasz Napierala rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap) 1824ec125fbbSEdward Tomasz Napierala { 1825ec125fbbSEdward Tomasz Napierala 1826ec125fbbSEdward Tomasz Napierala return (ENOSYS); 1827ec125fbbSEdward Tomasz Napierala } 1828ec125fbbSEdward Tomasz Napierala 1829ec125fbbSEdward Tomasz Napierala #endif /* !RCTL */ 1830