37#include <sys/devctl.h>
38#include <sys/malloc.h>
40#include <sys/refcount.h>
42#include <sys/kernel.h>
43#include <sys/limits.h>
44#include <sys/loginclass.h>
49#include <sys/resourcevar.h>
51#include <sys/sysent.h>
52#include <sys/sysproto.h>
55#include <sys/eventhandler.h>
58#include <sys/rwlock.h>
60#include <sys/taskqueue.h>
66#error "The RCTL option requires the RACCT option"
69FEATURE(rctl,
"Resource Limits");
72#define HRF_DONT_INHERIT 1
73#define HRF_DONT_ACCUMULATE 2
75#define RCTL_MAX_INBUFSIZE 4 * 1024
76#define RCTL_MAX_OUTBUFSIZE 16 * 1024 * 1024
77#define RCTL_LOG_BUFSIZE 128
79#define RCTL_PCPU_SHIFT (10 * 1000000)
81static unsigned int rctl_maxbufsize = RCTL_MAX_OUTBUFSIZE;
82static int rctl_log_rate_limit = 10;
83static int rctl_devctl_rate_limit = 10;
88static int rctl_throttle_min = -1;
89static int rctl_throttle_max = -1;
90static int rctl_throttle_pct = -1;
91static int rctl_throttle_pct2 = -1;
93static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS);
94static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS);
95static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS);
96static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS);
98SYSCTL_NODE(_kern_racct, OID_AUTO, rctl, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
100SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, maxbufsize, CTLFLAG_RWTUN,
101 &rctl_maxbufsize, 0,
"Maximum output buffer size");
102SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, log_rate_limit, CTLFLAG_RW,
103 &rctl_log_rate_limit, 0,
"Maximum number of log messages per second");
104SYSCTL_UINT(_kern_racct_rctl, OID_AUTO, devctl_rate_limit, CTLFLAG_RWTUN,
105 &rctl_devctl_rate_limit, 0,
"Maximum number of devctl messages per second");
106SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_min,
107 CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0,
108 &rctl_throttle_min_sysctl,
"IU",
109 "Shortest throttling duration, in hz");
110TUNABLE_INT(
"kern.racct.rctl.throttle_min", &rctl_throttle_min);
111SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_max,
112 CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0,
113 &rctl_throttle_max_sysctl,
"IU",
114 "Longest throttling duration, in hz");
115TUNABLE_INT(
"kern.racct.rctl.throttle_max", &rctl_throttle_max);
116SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct,
117 CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0,
118 &rctl_throttle_pct_sysctl,
"IU",
119 "Throttling penalty for process consumption, in percent");
120TUNABLE_INT(
"kern.racct.rctl.throttle_pct", &rctl_throttle_pct);
121SYSCTL_PROC(_kern_racct_rctl, OID_AUTO, throttle_pct2,
122 CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, 0,
123 &rctl_throttle_pct2_sysctl,
"IU",
124 "Throttling penalty for container consumption, in percent");
125TUNABLE_INT(
"kern.racct.rctl.throttle_pct2", &rctl_throttle_pct2);
132struct rctl_rule_link {
133 LIST_ENTRY(rctl_rule_link) rrl_next;
134 struct rctl_rule *rrl_rule;
143static struct dict subjectnames[] = {
144 {
"process", RCTL_SUBJECT_TYPE_PROCESS },
145 {
"user", RCTL_SUBJECT_TYPE_USER },
146 {
"loginclass", RCTL_SUBJECT_TYPE_LOGINCLASS },
147 {
"jail", RCTL_SUBJECT_TYPE_JAIL },
150static struct dict resourcenames[] = {
151 {
"cputime", RACCT_CPU },
152 {
"datasize", RACCT_DATA },
153 {
"stacksize", RACCT_STACK },
154 {
"coredumpsize", RACCT_CORE },
155 {
"memoryuse", RACCT_RSS },
156 {
"memorylocked", RACCT_MEMLOCK },
157 {
"maxproc", RACCT_NPROC },
158 {
"openfiles", RACCT_NOFILE },
159 {
"vmemoryuse", RACCT_VMEM },
160 {
"pseudoterminals", RACCT_NPTS },
161 {
"swapuse", RACCT_SWAP },
162 {
"nthr", RACCT_NTHR },
163 {
"msgqqueued", RACCT_MSGQQUEUED },
164 {
"msgqsize", RACCT_MSGQSIZE },
165 {
"nmsgq", RACCT_NMSGQ },
166 {
"nsem", RACCT_NSEM },
167 {
"nsemop", RACCT_NSEMOP },
168 {
"nshm", RACCT_NSHM },
169 {
"shmsize", RACCT_SHMSIZE },
170 {
"wallclock", RACCT_WALLCLOCK },
171 {
"pcpu", RACCT_PCTCPU },
172 {
"readbps", RACCT_READBPS },
173 {
"writebps", RACCT_WRITEBPS },
174 {
"readiops", RACCT_READIOPS },
175 {
"writeiops", RACCT_WRITEIOPS },
178static struct dict actionnames[] = {
179 {
"sighup", RCTL_ACTION_SIGHUP },
180 {
"sigint", RCTL_ACTION_SIGINT },
181 {
"sigquit", RCTL_ACTION_SIGQUIT },
182 {
"sigill", RCTL_ACTION_SIGILL },
183 {
"sigtrap", RCTL_ACTION_SIGTRAP },
184 {
"sigabrt", RCTL_ACTION_SIGABRT },
185 {
"sigemt", RCTL_ACTION_SIGEMT },
186 {
"sigfpe", RCTL_ACTION_SIGFPE },
187 {
"sigkill", RCTL_ACTION_SIGKILL },
188 {
"sigbus", RCTL_ACTION_SIGBUS },
189 {
"sigsegv", RCTL_ACTION_SIGSEGV },
190 {
"sigsys", RCTL_ACTION_SIGSYS },
191 {
"sigpipe", RCTL_ACTION_SIGPIPE },
192 {
"sigalrm", RCTL_ACTION_SIGALRM },
193 {
"sigterm", RCTL_ACTION_SIGTERM },
194 {
"sigurg", RCTL_ACTION_SIGURG },
195 {
"sigstop", RCTL_ACTION_SIGSTOP },
196 {
"sigtstp", RCTL_ACTION_SIGTSTP },
197 {
"sigchld", RCTL_ACTION_SIGCHLD },
198 {
"sigttin", RCTL_ACTION_SIGTTIN },
199 {
"sigttou", RCTL_ACTION_SIGTTOU },
200 {
"sigio", RCTL_ACTION_SIGIO },
201 {
"sigxcpu", RCTL_ACTION_SIGXCPU },
202 {
"sigxfsz", RCTL_ACTION_SIGXFSZ },
203 {
"sigvtalrm", RCTL_ACTION_SIGVTALRM },
204 {
"sigprof", RCTL_ACTION_SIGPROF },
205 {
"sigwinch", RCTL_ACTION_SIGWINCH },
206 {
"siginfo", RCTL_ACTION_SIGINFO },
207 {
"sigusr1", RCTL_ACTION_SIGUSR1 },
208 {
"sigusr2", RCTL_ACTION_SIGUSR2 },
209 {
"sigthr", RCTL_ACTION_SIGTHR },
210 {
"deny", RCTL_ACTION_DENY },
211 {
"log", RCTL_ACTION_LOG },
212 {
"devctl", RCTL_ACTION_DEVCTL },
213 {
"throttle", RCTL_ACTION_THROTTLE },
216static void rctl_init(
void);
217SYSINIT(rctl, SI_SUB_RACCT, SI_ORDER_FIRST, rctl_init, NULL);
219static uma_zone_t rctl_rule_zone;
220static uma_zone_t rctl_rule_link_zone;
222static int rctl_rule_fully_specified(
const struct rctl_rule *rule);
223static void rctl_rule_to_sbuf(
struct sbuf *sb,
const struct rctl_rule *rule);
227static int rctl_throttle_min_sysctl(SYSCTL_HANDLER_ARGS)
229 int error, val = rctl_throttle_min;
232 if (error || !req->newptr)
234 if (val < 1 || val > rctl_throttle_max)
238 rctl_throttle_min = val;
244static int rctl_throttle_max_sysctl(SYSCTL_HANDLER_ARGS)
246 int error, val = rctl_throttle_max;
249 if (error || !req->newptr)
251 if (val < rctl_throttle_min)
255 rctl_throttle_max = val;
261static int rctl_throttle_pct_sysctl(SYSCTL_HANDLER_ARGS)
263 int error, val = rctl_throttle_pct;
266 if (error || !req->newptr)
272 rctl_throttle_pct = val;
278static int rctl_throttle_pct2_sysctl(SYSCTL_HANDLER_ARGS)
280 int error, val = rctl_throttle_pct2;
283 if (error || !req->newptr)
289 rctl_throttle_pct2 = val;
296rctl_subject_type_name(
int subject)
300 for (i = 0; subjectnames[i].d_name != NULL; i++) {
301 if (subjectnames[i].d_value == subject)
302 return (subjectnames[i].d_name);
305 panic(
"rctl_subject_type_name: unknown subject type %d", subject);
309rctl_action_name(
int action)
313 for (i = 0; actionnames[i].d_name != NULL; i++) {
314 if (actionnames[i].d_value == action)
315 return (actionnames[i].d_name);
318 panic(
"rctl_action_name: unknown action %d", action);
322rctl_resource_name(
int resource)
326 for (i = 0; resourcenames[i].d_name != NULL; i++) {
327 if (resourcenames[i].d_value == resource)
328 return (resourcenames[i].d_name);
331 panic(
"rctl_resource_name: unknown resource %d", resource);
335rctl_proc_rule_to_racct(
const struct proc *p,
const struct rctl_rule *rule)
337 struct ucred *cred = p->p_ucred;
339 ASSERT_RACCT_ENABLED();
342 switch (rule->rr_per) {
343 case RCTL_SUBJECT_TYPE_PROCESS:
345 case RCTL_SUBJECT_TYPE_USER:
346 return (cred->cr_ruidinfo->ui_racct);
347 case RCTL_SUBJECT_TYPE_LOGINCLASS:
348 return (cred->cr_loginclass->lc_racct);
349 case RCTL_SUBJECT_TYPE_JAIL:
350 return (cred->cr_prison->pr_prison_racct->prr_racct);
352 panic(
"%s: unknown per %d", __func__, rule->rr_per);
361rctl_available_resource(
const struct proc *p,
const struct rctl_rule *rule)
363 const struct racct *racct;
366 ASSERT_RACCT_ENABLED();
369 racct = rctl_proc_rule_to_racct(p, rule);
370 available = rule->rr_amount - racct->r_resources[rule->rr_resource];
383rctl_throttle_decay(
struct racct *racct,
int resource)
385 struct rctl_rule *rule;
386 struct rctl_rule_link *link;
387 int64_t minavailable;
389 ASSERT_RACCT_ENABLED();
392 minavailable = INT64_MAX;
394 LIST_FOREACH(link, &racct->r_rule_links, rrl_next) {
395 rule = link->rrl_rule;
397 if (rule->rr_resource != resource)
399 if (rule->rr_action != RCTL_ACTION_THROTTLE)
402 if (rule->rr_amount < minavailable)
403 minavailable = rule->rr_amount;
406 if (racct->r_resources[resource] < minavailable) {
407 racct->r_resources[resource] = 0;
415 if (racct->r_resources[resource] > minavailable * 10)
416 racct->r_resources[resource] = minavailable * 10;
418 racct->r_resources[resource] -= minavailable;
427rctl_pcpu_available(
const struct proc *p) {
428 struct rctl_rule *rule;
429 struct rctl_rule_link *link;
430 int64_t available, minavailable, limit;
432 ASSERT_RACCT_ENABLED();
435 minavailable = INT64_MAX;
438 LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) {
439 rule = link->rrl_rule;
440 if (rule->rr_resource != RACCT_PCTCPU)
442 if (rule->rr_action != RCTL_ACTION_DENY)
444 available = rctl_available_resource(p, rule);
445 if (available < minavailable) {
446 minavailable = available;
447 limit = rule->rr_amount;
457 if (limit > 2 * RCTL_PCPU_SHIFT)
458 minavailable -= RCTL_PCPU_SHIFT;
460 minavailable -= (limit / 2);
463 return (minavailable);
467xadd(uint64_t a, uint64_t b)
483xmul(uint64_t a, uint64_t b)
486 if (b != 0 && a > UINT64_MAX / b)
498rctl_enforce(
struct proc *p,
int resource, uint64_t amount)
500 static struct timeval log_lasttime, devctl_lasttime;
501 static int log_curtime = 0, devctl_curtime = 0;
502 struct rctl_rule *rule;
503 struct rctl_rule_link *link;
507 uint64_t sleep_ms, sleep_ratio;
510 ASSERT_RACCT_ENABLED();
517 LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) {
518 rule = link->rrl_rule;
519 if (rule->rr_resource != resource)
522 available = rctl_available_resource(p, rule);
523 if (available >= (int64_t)amount) {
524 link->rrl_exceeded = 0;
528 switch (rule->rr_action) {
529 case RCTL_ACTION_DENY:
532 case RCTL_ACTION_LOG:
537 if (link->rrl_exceeded != 0)
547 if (p->p_state != PRS_NORMAL)
551 rctl_log_rate_limit))
554 buf =
malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT);
556 printf(
"rctl_enforce: out of memory\n");
559 sbuf_new(&sb,
buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN);
560 rctl_rule_to_sbuf(&sb, rule);
562 printf(
"rctl: rule \"%s\" matched by pid %d "
563 "(%s), uid %d, jail %s\n",
sbuf_data(&sb),
564 p->p_pid, p->p_comm, p->p_ucred->cr_uid,
565 p->p_ucred->cr_prison->pr_prison_racct->prr_name);
568 link->rrl_exceeded = 1;
570 case RCTL_ACTION_DEVCTL:
571 if (link->rrl_exceeded != 0)
574 if (p->p_state != PRS_NORMAL)
578 rctl_devctl_rate_limit))
581 buf =
malloc(RCTL_LOG_BUFSIZE, M_RCTL, M_NOWAIT);
583 printf(
"rctl_enforce: out of memory\n");
586 sbuf_new(&sb,
buf, RCTL_LOG_BUFSIZE, SBUF_FIXEDLEN);
588 rctl_rule_to_sbuf(&sb, rule);
590 p->p_pid, p->p_ucred->cr_ruid,
591 p->p_ucred->cr_prison->pr_prison_racct->prr_name);
597 link->rrl_exceeded = 1;
599 case RCTL_ACTION_THROTTLE:
600 if (p->p_state != PRS_NORMAL)
603 if (rule->rr_amount == 0) {
604 racct_proc_throttle(p, rctl_throttle_max);
627 sleep_ms = xmul(
hz, p->p_racct->r_resources[resource]);
628 sleep_ms = xmul(sleep_ms, rctl_throttle_pct) / 100;
629 if (sleep_ms < rctl_throttle_min * rule->rr_amount)
630 sleep_ms = rctl_throttle_min * rule->rr_amount;
642 sleep_ratio = -available / rule->rr_amount;
645 sleep_ratio = xmul(sleep_ratio, sleep_ratio);
646 sleep_ratio = xmul(sleep_ratio, rctl_throttle_pct2) / 100;
647 sleep_ms = xadd(sleep_ms, xmul(sleep_ms, sleep_ratio));
652 sleep_ms /= rule->rr_amount;
654 if (sleep_ms > rctl_throttle_max)
655 sleep_ms = rctl_throttle_max;
657 printf(
"%s: pid %d (%s), %jd of %jd, will sleep for %ju ms (ratio %ju, available %jd)\n",
658 __func__, p->p_pid, p->p_comm,
659 p->p_racct->r_resources[resource],
660 rule->rr_amount, (uintmax_t)sleep_ms,
661 (uintmax_t)sleep_ratio, (intmax_t)available);
664 KASSERT(sleep_ms >= rctl_throttle_min, (
"%s: %ju < %d\n",
665 __func__, (uintmax_t)sleep_ms, rctl_throttle_min));
666 racct_proc_throttle(p, sleep_ms);
669 if (link->rrl_exceeded != 0)
672 if (p->p_state != PRS_NORMAL)
675 KASSERT(rule->rr_action > 0 &&
676 rule->rr_action <= RCTL_ACTION_SIGNAL_MAX,
677 (
"rctl_enforce: unknown action %d",
685 link->rrl_exceeded = 1;
702rctl_get_limit(
struct proc *p,
int resource)
704 struct rctl_rule *rule;
705 struct rctl_rule_link *link;
706 uint64_t amount = UINT64_MAX;
708 ASSERT_RACCT_ENABLED();
715 LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) {
716 rule = link->rrl_rule;
717 if (rule->rr_resource != resource)
719 if (rule->rr_action != RCTL_ACTION_DENY)
721 if (rule->rr_amount < amount)
722 amount = rule->rr_amount;
729rctl_get_available(
struct proc *p,
int resource)
731 struct rctl_rule *rule;
732 struct rctl_rule_link *link;
733 int64_t available, minavailable, allocated;
735 minavailable = INT64_MAX;
737 ASSERT_RACCT_ENABLED();
744 LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) {
745 rule = link->rrl_rule;
746 if (rule->rr_resource != resource)
748 if (rule->rr_action != RCTL_ACTION_DENY)
750 available = rctl_available_resource(p, rule);
751 if (available < minavailable)
752 minavailable = available;
758 allocated = p->p_racct->r_resources[resource];
759 if (minavailable < INT64_MAX - allocated)
760 minavailable += allocated;
761 if (minavailable < 0)
764 return (minavailable);
768rctl_rule_matches(
const struct rctl_rule *rule,
const struct rctl_rule *filter)
771 ASSERT_RACCT_ENABLED();
773 if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED) {
774 if (rule->rr_subject_type != filter->rr_subject_type)
777 switch (filter->rr_subject_type) {
778 case RCTL_SUBJECT_TYPE_PROCESS:
779 if (filter->rr_subject.rs_proc != NULL &&
780 rule->rr_subject.rs_proc !=
781 filter->rr_subject.rs_proc)
784 case RCTL_SUBJECT_TYPE_USER:
785 if (filter->rr_subject.rs_uip != NULL &&
786 rule->rr_subject.rs_uip !=
787 filter->rr_subject.rs_uip)
790 case RCTL_SUBJECT_TYPE_LOGINCLASS:
791 if (filter->rr_subject.rs_loginclass != NULL &&
792 rule->rr_subject.rs_loginclass !=
793 filter->rr_subject.rs_loginclass)
796 case RCTL_SUBJECT_TYPE_JAIL:
797 if (filter->rr_subject.rs_prison_racct != NULL &&
798 rule->rr_subject.rs_prison_racct !=
799 filter->rr_subject.rs_prison_racct)
803 panic(
"rctl_rule_matches: unknown subject type %d",
804 filter->rr_subject_type);
808 if (filter->rr_resource != RACCT_UNDEFINED) {
809 if (rule->rr_resource != filter->rr_resource)
813 if (filter->rr_action != RCTL_ACTION_UNDEFINED) {
814 if (rule->rr_action != filter->rr_action)
818 if (filter->rr_amount != RCTL_AMOUNT_UNDEFINED) {
819 if (rule->rr_amount != filter->rr_amount)
823 if (filter->rr_per != RCTL_SUBJECT_TYPE_UNDEFINED) {
824 if (rule->rr_per != filter->rr_per)
832str2value(
const char *str,
int *
value,
struct dict *table)
839 for (i = 0; table[i].d_name != NULL; i++) {
840 if (strcasecmp(table[i].d_name, str) == 0) {
841 *
value = table[i].d_value;
850str2id(
const char *str, id_t *
value)
857 *
value = strtoul(str, &end, 10);
858 if ((
size_t)(end - str) != strlen(str))
865str2int64(
const char *str, int64_t *
value)
872 *
value = strtoul(str, &end, 10);
873 if ((
size_t)(end - str) != strlen(str))
886rctl_racct_add_rule(
struct racct *racct,
struct rctl_rule *rule)
888 struct rctl_rule_link *link;
890 ASSERT_RACCT_ENABLED();
891 KASSERT(rctl_rule_fully_specified(rule), (
"rule not fully specified"));
893 rctl_rule_acquire(rule);
894 link = uma_zalloc(rctl_rule_link_zone, M_WAITOK);
895 link->rrl_rule = rule;
896 link->rrl_exceeded = 0;
899 LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next);
904rctl_racct_add_rule_locked(
struct racct *racct,
struct rctl_rule *rule)
906 struct rctl_rule_link *link;
908 ASSERT_RACCT_ENABLED();
909 KASSERT(rctl_rule_fully_specified(rule), (
"rule not fully specified"));
912 link = uma_zalloc(rctl_rule_link_zone, M_NOWAIT);
915 rctl_rule_acquire(rule);
916 link->rrl_rule = rule;
917 link->rrl_exceeded = 0;
919 LIST_INSERT_HEAD(&racct->r_rule_links, link, rrl_next);
930rctl_racct_remove_rules(
struct racct *racct,
931 const struct rctl_rule *filter)
933 struct rctl_rule_link *link, *linktmp;
936 ASSERT_RACCT_ENABLED();
939 LIST_FOREACH_SAFE(link, &racct->r_rule_links, rrl_next, linktmp) {
940 if (!rctl_rule_matches(link->rrl_rule, filter))
943 LIST_REMOVE(link, rrl_next);
944 rctl_rule_release(link->rrl_rule);
945 uma_zfree(rctl_rule_link_zone, link);
952rctl_rule_acquire_subject(
struct rctl_rule *rule)
955 ASSERT_RACCT_ENABLED();
957 switch (rule->rr_subject_type) {
958 case RCTL_SUBJECT_TYPE_UNDEFINED:
959 case RCTL_SUBJECT_TYPE_PROCESS:
961 case RCTL_SUBJECT_TYPE_JAIL:
962 if (rule->rr_subject.rs_prison_racct != NULL)
963 prison_racct_hold(rule->rr_subject.rs_prison_racct);
965 case RCTL_SUBJECT_TYPE_USER:
966 if (rule->rr_subject.rs_uip != NULL)
967 uihold(rule->rr_subject.rs_uip);
969 case RCTL_SUBJECT_TYPE_LOGINCLASS:
970 if (rule->rr_subject.rs_loginclass != NULL)
971 loginclass_hold(rule->rr_subject.rs_loginclass);
974 panic(
"rctl_rule_acquire_subject: unknown subject type %d",
975 rule->rr_subject_type);
980rctl_rule_release_subject(
struct rctl_rule *rule)
983 ASSERT_RACCT_ENABLED();
985 switch (rule->rr_subject_type) {
986 case RCTL_SUBJECT_TYPE_UNDEFINED:
987 case RCTL_SUBJECT_TYPE_PROCESS:
989 case RCTL_SUBJECT_TYPE_JAIL:
990 if (rule->rr_subject.rs_prison_racct != NULL)
991 prison_racct_free(rule->rr_subject.rs_prison_racct);
993 case RCTL_SUBJECT_TYPE_USER:
994 if (rule->rr_subject.rs_uip != NULL)
995 uifree(rule->rr_subject.rs_uip);
997 case RCTL_SUBJECT_TYPE_LOGINCLASS:
998 if (rule->rr_subject.rs_loginclass != NULL)
1002 panic(
"rctl_rule_release_subject: unknown subject type %d",
1003 rule->rr_subject_type);
1008rctl_rule_alloc(
int flags)
1010 struct rctl_rule *rule;
1012 ASSERT_RACCT_ENABLED();
1014 rule = uma_zalloc(rctl_rule_zone,
flags);
1017 rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED;
1018 rule->rr_subject.rs_proc = NULL;
1019 rule->rr_subject.rs_uip = NULL;
1020 rule->rr_subject.rs_loginclass = NULL;
1021 rule->rr_subject.rs_prison_racct = NULL;
1022 rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED;
1023 rule->rr_resource = RACCT_UNDEFINED;
1024 rule->rr_action = RCTL_ACTION_UNDEFINED;
1025 rule->rr_amount = RCTL_AMOUNT_UNDEFINED;
1026 refcount_init(&rule->rr_refcount, 1);
1032rctl_rule_duplicate(
const struct rctl_rule *rule,
int flags)
1034 struct rctl_rule *copy;
1036 ASSERT_RACCT_ENABLED();
1038 copy = uma_zalloc(rctl_rule_zone,
flags);
1041 copy->rr_subject_type = rule->rr_subject_type;
1042 copy->rr_subject.rs_proc = rule->rr_subject.rs_proc;
1043 copy->rr_subject.rs_uip = rule->rr_subject.rs_uip;
1044 copy->rr_subject.rs_loginclass = rule->rr_subject.rs_loginclass;
1045 copy->rr_subject.rs_prison_racct = rule->rr_subject.rs_prison_racct;
1046 copy->rr_per = rule->rr_per;
1047 copy->rr_resource = rule->rr_resource;
1048 copy->rr_action = rule->rr_action;
1049 copy->rr_amount = rule->rr_amount;
1050 refcount_init(©->rr_refcount, 1);
1051 rctl_rule_acquire_subject(copy);
1057rctl_rule_acquire(
struct rctl_rule *rule)
1060 ASSERT_RACCT_ENABLED();
1061 KASSERT(rule->rr_refcount > 0, (
"rule->rr_refcount <= 0"));
1063 refcount_acquire(&rule->rr_refcount);
1067rctl_rule_free(
void *context,
int pending)
1069 struct rctl_rule *rule;
1071 rule = (
struct rctl_rule *)context;
1073 ASSERT_RACCT_ENABLED();
1074 KASSERT(rule->rr_refcount == 0, (
"rule->rr_refcount != 0"));
1080 rctl_rule_release_subject(rule);
1081 uma_zfree(rctl_rule_zone, rule);
1085rctl_rule_release(
struct rctl_rule *rule)
1088 ASSERT_RACCT_ENABLED();
1089 KASSERT(rule->rr_refcount > 0, (
"rule->rr_refcount <= 0"));
1091 if (refcount_release(&rule->rr_refcount)) {
1099 TASK_INIT(&rule->rr_task, 0, rctl_rule_free, rule);
1105rctl_rule_fully_specified(
const struct rctl_rule *rule)
1108 ASSERT_RACCT_ENABLED();
1110 switch (rule->rr_subject_type) {
1111 case RCTL_SUBJECT_TYPE_UNDEFINED:
1113 case RCTL_SUBJECT_TYPE_PROCESS:
1114 if (rule->rr_subject.rs_proc == NULL)
1117 case RCTL_SUBJECT_TYPE_USER:
1118 if (rule->rr_subject.rs_uip == NULL)
1121 case RCTL_SUBJECT_TYPE_LOGINCLASS:
1122 if (rule->rr_subject.rs_loginclass == NULL)
1125 case RCTL_SUBJECT_TYPE_JAIL:
1126 if (rule->rr_subject.rs_prison_racct == NULL)
1130 panic(
"rctl_rule_fully_specified: unknown subject type %d",
1131 rule->rr_subject_type);
1133 if (rule->rr_resource == RACCT_UNDEFINED)
1135 if (rule->rr_action == RCTL_ACTION_UNDEFINED)
1137 if (rule->rr_amount == RCTL_AMOUNT_UNDEFINED)
1139 if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED)
1146rctl_string_to_rule(
char *rulestr,
struct rctl_rule **rulep)
1148 struct rctl_rule *rule;
1149 char *subjectstr, *subject_idstr, *resourcestr, *actionstr,
1150 *amountstr, *perstr;
1154 ASSERT_RACCT_ENABLED();
1156 rule = rctl_rule_alloc(M_WAITOK);
1158 subjectstr = strsep(&rulestr,
":");
1159 subject_idstr = strsep(&rulestr,
":");
1160 resourcestr = strsep(&rulestr,
":");
1161 actionstr = strsep(&rulestr,
"=/");
1162 amountstr = strsep(&rulestr,
"/");
1165 if (subjectstr == NULL || subjectstr[0] ==
'\0')
1166 rule->rr_subject_type = RCTL_SUBJECT_TYPE_UNDEFINED;
1168 error = str2value(subjectstr, &rule->rr_subject_type, subjectnames);
1173 if (subject_idstr == NULL || subject_idstr[0] ==
'\0') {
1174 rule->rr_subject.rs_proc = NULL;
1175 rule->rr_subject.rs_uip = NULL;
1176 rule->rr_subject.rs_loginclass = NULL;
1177 rule->rr_subject.rs_prison_racct = NULL;
1179 switch (rule->rr_subject_type) {
1180 case RCTL_SUBJECT_TYPE_UNDEFINED:
1183 case RCTL_SUBJECT_TYPE_PROCESS:
1184 error = str2id(subject_idstr, &
id);
1188 rule->rr_subject.rs_proc =
pfind(
id);
1189 if (rule->rr_subject.rs_proc == NULL) {
1193 PROC_UNLOCK(rule->rr_subject.rs_proc);
1195 case RCTL_SUBJECT_TYPE_USER:
1196 error = str2id(subject_idstr, &
id);
1199 rule->rr_subject.rs_uip =
uifind(
id);
1201 case RCTL_SUBJECT_TYPE_LOGINCLASS:
1202 rule->rr_subject.rs_loginclass =
1204 if (rule->rr_subject.rs_loginclass == NULL) {
1205 error = ENAMETOOLONG;
1209 case RCTL_SUBJECT_TYPE_JAIL:
1210 rule->rr_subject.rs_prison_racct =
1211 prison_racct_find(subject_idstr);
1212 if (rule->rr_subject.rs_prison_racct == NULL) {
1213 error = ENAMETOOLONG;
1218 panic(
"rctl_string_to_rule: unknown subject type %d",
1219 rule->rr_subject_type);
1223 if (resourcestr == NULL || resourcestr[0] ==
'\0')
1224 rule->rr_resource = RACCT_UNDEFINED;
1226 error = str2value(resourcestr, &rule->rr_resource,
1232 if (actionstr == NULL || actionstr[0] ==
'\0')
1233 rule->rr_action = RCTL_ACTION_UNDEFINED;
1235 error = str2value(actionstr, &rule->rr_action, actionnames);
1240 if (amountstr == NULL || amountstr[0] ==
'\0')
1241 rule->rr_amount = RCTL_AMOUNT_UNDEFINED;
1243 error = str2int64(amountstr, &rule->rr_amount);
1246 if (RACCT_IS_IN_MILLIONS(rule->rr_resource)) {
1247 if (rule->rr_amount > INT64_MAX / 1000000) {
1251 rule->rr_amount *= 1000000;
1255 if (perstr == NULL || perstr[0] ==
'\0')
1256 rule->rr_per = RCTL_SUBJECT_TYPE_UNDEFINED;
1258 error = str2value(perstr, &rule->rr_per, subjectnames);
1267 rctl_rule_release(rule);
1276rctl_rule_add(
struct rctl_rule *rule)
1280 struct uidinfo *uip;
1282 struct prison_racct *prr;
1283 struct loginclass *
lc;
1284 struct rctl_rule *rule2;
1287 ASSERT_RACCT_ENABLED();
1288 KASSERT(rctl_rule_fully_specified(rule), (
"rule not fully specified"));
1296 if (rule->rr_action == RCTL_ACTION_DENY &&
1297 !RACCT_IS_DENIABLE(rule->rr_resource) &&
1298 rule->rr_resource != RACCT_RSS &&
1299 rule->rr_resource != RACCT_PCTCPU) {
1300 return (EOPNOTSUPP);
1303 if (rule->rr_action == RCTL_ACTION_THROTTLE &&
1304 !RACCT_IS_DECAYING(rule->rr_resource)) {
1305 return (EOPNOTSUPP);
1308 if (rule->rr_action == RCTL_ACTION_THROTTLE &&
1309 rule->rr_resource == RACCT_PCTCPU) {
1310 return (EOPNOTSUPP);
1313 if (rule->rr_per == RCTL_SUBJECT_TYPE_PROCESS &&
1314 RACCT_IS_SLOPPY(rule->rr_resource)) {
1315 return (EOPNOTSUPP);
1322 if (rule->rr_action == RCTL_ACTION_DENY) {
1323 rule2 = rctl_rule_duplicate(rule, M_WAITOK);
1324 rule2->rr_amount = RCTL_AMOUNT_UNDEFINED;
1325 rctl_rule_remove(rule2);
1326 rctl_rule_release(rule2);
1328 rctl_rule_remove(rule);
1330 switch (rule->rr_subject_type) {
1331 case RCTL_SUBJECT_TYPE_PROCESS:
1332 p = rule->rr_subject.rs_proc;
1333 KASSERT(p != NULL, (
"rctl_rule_add: NULL proc"));
1335 rctl_racct_add_rule(p->p_racct, rule);
1342 case RCTL_SUBJECT_TYPE_USER:
1343 uip = rule->rr_subject.rs_uip;
1344 KASSERT(uip != NULL, (
"rctl_rule_add: NULL uip"));
1345 rctl_racct_add_rule(uip->ui_racct, rule);
1348 case RCTL_SUBJECT_TYPE_LOGINCLASS:
1349 lc = rule->rr_subject.rs_loginclass;
1350 KASSERT(
lc != NULL, (
"rctl_rule_add: NULL loginclass"));
1351 rctl_racct_add_rule(
lc->lc_racct, rule);
1354 case RCTL_SUBJECT_TYPE_JAIL:
1355 prr = rule->rr_subject.rs_prison_racct;
1356 KASSERT(prr != NULL, (
"rctl_rule_add: NULL pr"));
1357 rctl_racct_add_rule(prr->prr_racct, rule);
1361 panic(
"rctl_rule_add: unknown subject type %d",
1362 rule->rr_subject_type);
1370 FOREACH_PROC_IN_SYSTEM(p) {
1372 switch (rule->rr_subject_type) {
1373 case RCTL_SUBJECT_TYPE_USER:
1374 if (cred->cr_uidinfo == rule->rr_subject.rs_uip ||
1375 cred->cr_ruidinfo == rule->rr_subject.rs_uip)
1378 case RCTL_SUBJECT_TYPE_LOGINCLASS:
1379 if (cred->cr_loginclass == rule->rr_subject.rs_loginclass)
1382 case RCTL_SUBJECT_TYPE_JAIL:
1384 for (
pr = cred->cr_prison;
pr != NULL;
pr =
pr->pr_parent) {
1385 if (
pr->pr_prison_racct == rule->rr_subject.rs_prison_racct) {
1394 panic(
"rctl_rule_add: unknown subject type %d",
1395 rule->rr_subject_type);
1398 rctl_racct_add_rule(p->p_racct, rule);
1405rctl_rule_pre_callback(
void)
1412rctl_rule_post_callback(
void)
1419rctl_rule_remove_callback(
struct racct *racct,
void *arg2,
void *arg3)
1421 struct rctl_rule *filter = (
struct rctl_rule *)arg2;
1424 ASSERT_RACCT_ENABLED();
1425 RACCT_LOCK_ASSERT();
1427 found += rctl_racct_remove_rules(racct, filter);
1429 *((
int *)arg3) += found;
1436rctl_rule_remove(
struct rctl_rule *filter)
1441 ASSERT_RACCT_ENABLED();
1443 if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_PROCESS &&
1444 filter->rr_subject.rs_proc != NULL) {
1445 p = filter->rr_subject.rs_proc;
1447 found = rctl_racct_remove_rules(p->p_racct, filter);
1455 rctl_rule_pre_callback, rctl_rule_post_callback,
1456 filter, (
void *)&found);
1457 ui_racct_foreach(rctl_rule_remove_callback,
1458 rctl_rule_pre_callback, rctl_rule_post_callback,
1459 filter, (
void *)&found);
1460 prison_racct_foreach(rctl_rule_remove_callback,
1461 rctl_rule_pre_callback, rctl_rule_post_callback,
1462 filter, (
void *)&found);
1466 FOREACH_PROC_IN_SYSTEM(p) {
1467 found += rctl_racct_remove_rules(p->p_racct, filter);
1480rctl_rule_to_sbuf(
struct sbuf *sb,
const struct rctl_rule *rule)
1484 ASSERT_RACCT_ENABLED();
1486 sbuf_printf(sb,
"%s:", rctl_subject_type_name(rule->rr_subject_type));
1488 switch (rule->rr_subject_type) {
1489 case RCTL_SUBJECT_TYPE_PROCESS:
1490 if (rule->rr_subject.rs_proc == NULL)
1494 rule->rr_subject.rs_proc->p_pid);
1496 case RCTL_SUBJECT_TYPE_USER:
1497 if (rule->rr_subject.rs_uip == NULL)
1501 rule->rr_subject.rs_uip->ui_uid);
1503 case RCTL_SUBJECT_TYPE_LOGINCLASS:
1504 if (rule->rr_subject.rs_loginclass == NULL)
1508 rule->rr_subject.rs_loginclass->lc_name);
1510 case RCTL_SUBJECT_TYPE_JAIL:
1511 if (rule->rr_subject.rs_prison_racct == NULL)
1515 rule->rr_subject.rs_prison_racct->prr_name);
1518 panic(
"rctl_rule_to_sbuf: unknown subject type %d",
1519 rule->rr_subject_type);
1522 amount = rule->rr_amount;
1523 if (amount != RCTL_AMOUNT_UNDEFINED &&
1524 RACCT_IS_IN_MILLIONS(rule->rr_resource))
1528 rctl_resource_name(rule->rr_resource),
1529 rctl_action_name(rule->rr_action),
1532 if (rule->rr_per != rule->rr_subject_type)
1533 sbuf_printf(sb,
"/%s", rctl_subject_type_name(rule->rr_per));
1540rctl_read_inbuf(
char **inputstr,
const char *inbufp,
size_t inbuflen)
1545 ASSERT_RACCT_ENABLED();
1549 if (inbuflen > RCTL_MAX_INBUFSIZE)
1552 str =
malloc(inbuflen + 1, M_RCTL, M_WAITOK);
1553 error = copyinstr(inbufp, str, inbuflen, NULL);
1568rctl_write_outbuf(
struct sbuf *outputsbuf,
char *outbufp,
size_t outbuflen)
1572 ASSERT_RACCT_ENABLED();
1574 if (outputsbuf == NULL)
1578 if (outbuflen <
sbuf_len(outputsbuf) + 1) {
1582 error = copyout(
sbuf_data(outputsbuf), outbufp,
1589rctl_racct_to_sbuf(
struct racct *racct,
int sloppy)
1595 ASSERT_RACCT_ENABLED();
1597 sb = sbuf_new_auto();
1598 for (i = 0; i <= RACCT_MAX; i++) {
1599 if (sloppy == 0 && RACCT_IS_SLOPPY(i))
1602 amount = racct->r_resources[i];
1604 if (RACCT_IS_IN_MILLIONS(i))
1606 sbuf_printf(sb,
"%s=%jd,", rctl_resource_name(i), amount);
1615 struct rctl_rule *filter;
1616 struct sbuf *outputsbuf = NULL;
1618 struct uidinfo *uip;
1619 struct loginclass *
lc;
1620 struct prison_racct *prr;
1631 error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen);
1636 error = rctl_string_to_rule(inputstr, &filter);
1637 free(inputstr, M_RCTL);
1643 switch (filter->rr_subject_type) {
1644 case RCTL_SUBJECT_TYPE_PROCESS:
1645 p = filter->rr_subject.rs_proc;
1650 outputsbuf = rctl_racct_to_sbuf(p->p_racct, 0);
1652 case RCTL_SUBJECT_TYPE_USER:
1653 uip = filter->rr_subject.rs_uip;
1658 outputsbuf = rctl_racct_to_sbuf(uip->ui_racct, 1);
1660 case RCTL_SUBJECT_TYPE_LOGINCLASS:
1661 lc = filter->rr_subject.rs_loginclass;
1666 outputsbuf = rctl_racct_to_sbuf(
lc->lc_racct, 1);
1668 case RCTL_SUBJECT_TYPE_JAIL:
1669 prr = filter->rr_subject.rs_prison_racct;
1674 outputsbuf = rctl_racct_to_sbuf(prr->prr_racct, 1);
1680 rctl_rule_release(filter);
1685 error = rctl_write_outbuf(outputsbuf, uap->outbufp, uap->outbuflen);
1691rctl_get_rules_callback(
struct racct *racct,
void *arg2,
void *arg3)
1693 struct rctl_rule *filter = (
struct rctl_rule *)arg2;
1694 struct rctl_rule_link *link;
1695 struct sbuf *sb = (
struct sbuf *)arg3;
1697 ASSERT_RACCT_ENABLED();
1698 RACCT_LOCK_ASSERT();
1700 LIST_FOREACH(link, &racct->r_rule_links, rrl_next) {
1701 if (!rctl_rule_matches(link->rrl_rule, filter))
1703 rctl_rule_to_sbuf(sb, link->rrl_rule);
1712 struct rctl_rule *filter;
1713 struct rctl_rule_link *link;
1715 char *inputstr, *
buf;
1726 error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen);
1731 error = rctl_string_to_rule(inputstr, &filter);
1732 free(inputstr, M_RCTL);
1738 bufsize = uap->outbuflen;
1739 if (bufsize > rctl_maxbufsize) {
1744 buf =
malloc(bufsize, M_RCTL, M_WAITOK);
1746 KASSERT(sb != NULL, (
"sbuf_new failed"));
1748 FOREACH_PROC_IN_SYSTEM(p) {
1750 LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) {
1755 if (link->rrl_rule->rr_subject_type !=
1756 RCTL_SUBJECT_TYPE_PROCESS)
1758 if (!rctl_rule_matches(link->rrl_rule, filter))
1760 rctl_rule_to_sbuf(sb, link->rrl_rule);
1767 rctl_rule_pre_callback, rctl_rule_post_callback,
1769 ui_racct_foreach(rctl_get_rules_callback,
1770 rctl_rule_pre_callback, rctl_rule_post_callback,
1772 prison_racct_foreach(rctl_get_rules_callback,
1773 rctl_rule_pre_callback, rctl_rule_post_callback,
1786 error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen);
1788 rctl_rule_release(filter);
1798 struct rctl_rule *filter;
1799 struct rctl_rule_link *link;
1800 char *inputstr, *
buf;
1807 error =
priv_check(td, PRIV_RCTL_GET_LIMITS);
1811 error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen);
1816 error = rctl_string_to_rule(inputstr, &filter);
1817 free(inputstr, M_RCTL);
1823 if (filter->rr_subject_type == RCTL_SUBJECT_TYPE_UNDEFINED) {
1824 rctl_rule_release(filter);
1828 if (filter->rr_subject_type != RCTL_SUBJECT_TYPE_PROCESS) {
1829 rctl_rule_release(filter);
1831 return (EOPNOTSUPP);
1833 if (filter->rr_subject.rs_proc == NULL) {
1834 rctl_rule_release(filter);
1839 bufsize = uap->outbuflen;
1840 if (bufsize > rctl_maxbufsize) {
1841 rctl_rule_release(filter);
1846 buf =
malloc(bufsize, M_RCTL, M_WAITOK);
1848 KASSERT(sb != NULL, (
"sbuf_new failed"));
1851 LIST_FOREACH(link, &filter->rr_subject.rs_proc->p_racct->r_rule_links,
1853 rctl_rule_to_sbuf(sb, link->rrl_rule);
1869 error = rctl_write_outbuf(sb, uap->outbufp, uap->outbuflen);
1871 rctl_rule_release(filter);
1880 struct rctl_rule *rule;
1891 error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen);
1896 error = rctl_string_to_rule(inputstr, &rule);
1897 free(inputstr, M_RCTL);
1905 if (rule->rr_per == RCTL_SUBJECT_TYPE_UNDEFINED &&
1906 rule->rr_subject_type != RCTL_SUBJECT_TYPE_UNDEFINED)
1907 rule->rr_per = rule->rr_subject_type;
1909 if (!rctl_rule_fully_specified(rule)) {
1914 error = rctl_rule_add(rule);
1917 rctl_rule_release(rule);
1925 struct rctl_rule *filter;
1932 error =
priv_check(td, PRIV_RCTL_REMOVE_RULE);
1936 error = rctl_read_inbuf(&inputstr, uap->inbufp, uap->inbuflen);
1941 error = rctl_string_to_rule(inputstr, &filter);
1942 free(inputstr, M_RCTL);
1948 error = rctl_rule_remove(filter);
1949 rctl_rule_release(filter);
1959rctl_proc_ucred_changed(
struct proc *p,
struct ucred *newcred)
1962 struct rctl_rule_link *link, *newlink;
1963 struct uidinfo *newuip;
1964 struct loginclass *newlc;
1965 struct prison_racct *newprr;
1971 PROC_LOCK_ASSERT(p, MA_NOTOWNED);
1973 newuip = newcred->cr_ruidinfo;
1974 newlc = newcred->cr_loginclass;
1975 newprr = newcred->cr_prison->pr_prison_racct;
1977 LIST_INIT(&newrules);
1986 LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) {
1987 if (link->rrl_rule->rr_subject_type ==
1988 RCTL_SUBJECT_TYPE_PROCESS)
1991 LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next)
1993 LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next)
1995 LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next)
2003 for (i = 0; i < rulecnt; i++) {
2004 newlink = uma_zalloc(rctl_rule_link_zone, M_WAITOK);
2005 newlink->rrl_rule = NULL;
2006 newlink->rrl_exceeded = 0;
2007 LIST_INSERT_HEAD(&newrules, newlink, rrl_next);
2010 newlink = LIST_FIRST(&newrules);
2016 LIST_FOREACH(link, &p->p_racct->r_rule_links, rrl_next) {
2017 if (link->rrl_rule->rr_subject_type ==
2018 RCTL_SUBJECT_TYPE_PROCESS) {
2019 if (newlink == NULL)
2021 rctl_rule_acquire(link->rrl_rule);
2022 newlink->rrl_rule = link->rrl_rule;
2023 newlink->rrl_exceeded = link->rrl_exceeded;
2024 newlink = LIST_NEXT(newlink, rrl_next);
2029 LIST_FOREACH(link, &newuip->ui_racct->r_rule_links, rrl_next) {
2030 if (newlink == NULL)
2032 rctl_rule_acquire(link->rrl_rule);
2033 newlink->rrl_rule = link->rrl_rule;
2034 newlink->rrl_exceeded = link->rrl_exceeded;
2035 newlink = LIST_NEXT(newlink, rrl_next);
2039 LIST_FOREACH(link, &newlc->lc_racct->r_rule_links, rrl_next) {
2040 if (newlink == NULL)
2042 rctl_rule_acquire(link->rrl_rule);
2043 newlink->rrl_rule = link->rrl_rule;
2044 newlink->rrl_exceeded = link->rrl_exceeded;
2045 newlink = LIST_NEXT(newlink, rrl_next);
2049 LIST_FOREACH(link, &newprr->prr_racct->r_rule_links, rrl_next) {
2050 if (newlink == NULL)
2052 rctl_rule_acquire(link->rrl_rule);
2053 newlink->rrl_rule = link->rrl_rule;
2054 newlink->rrl_exceeded = link->rrl_exceeded;
2055 newlink = LIST_NEXT(newlink, rrl_next);
2063 while (!LIST_EMPTY(&p->p_racct->r_rule_links)) {
2064 link = LIST_FIRST(&p->p_racct->r_rule_links);
2065 LIST_REMOVE(link, rrl_next);
2066 rctl_rule_release(link->rrl_rule);
2067 uma_zfree(rctl_rule_link_zone, link);
2076 while (!LIST_EMPTY(&newrules)) {
2077 newlink = LIST_FIRST(&newrules);
2078 LIST_REMOVE(newlink, rrl_next);
2079 LIST_INSERT_HEAD(&p->p_racct->r_rule_links,
2095 while (!LIST_EMPTY(&newrules)) {
2096 newlink = LIST_FIRST(&newrules);
2097 LIST_REMOVE(newlink, rrl_next);
2098 if (newlink->rrl_rule != NULL)
2099 rctl_rule_release(newlink->rrl_rule);
2100 uma_zfree(rctl_rule_link_zone, newlink);
2110rctl_proc_fork(
struct proc *
parent,
struct proc *
child)
2112 struct rctl_rule *rule;
2113 struct rctl_rule_link *link;
2116 ASSERT_RACCT_ENABLED();
2117 RACCT_LOCK_ASSERT();
2118 KASSERT(
parent->p_racct != NULL, (
"process without racct; p = %p",
parent));
2120 LIST_INIT(&
child->p_racct->r_rule_links);
2127 LIST_FOREACH(link, &
parent->p_racct->r_rule_links, rrl_next) {
2128 if (link->rrl_rule->rr_subject_type ==
2129 RCTL_SUBJECT_TYPE_PROCESS) {
2130 rule = rctl_rule_duplicate(link->rrl_rule, M_NOWAIT);
2133 KASSERT(rule->rr_subject.rs_proc ==
parent,
2134 (
"rule->rr_subject.rs_proc != parent"));
2135 rule->rr_subject.rs_proc =
child;
2136 error = rctl_racct_add_rule_locked(
child->p_racct,
2138 rctl_rule_release(rule);
2142 error = rctl_racct_add_rule_locked(
child->p_racct,
2152 while (!LIST_EMPTY(&
child->p_racct->r_rule_links)) {
2153 link = LIST_FIRST(&
child->p_racct->r_rule_links);
2154 LIST_REMOVE(link, rrl_next);
2155 rctl_rule_release(link->rrl_rule);
2156 uma_zfree(rctl_rule_link_zone, link);
2166rctl_racct_release(
struct racct *racct)
2168 struct rctl_rule_link *link;
2170 ASSERT_RACCT_ENABLED();
2171 RACCT_LOCK_ASSERT();
2173 while (!LIST_EMPTY(&racct->r_rule_links)) {
2174 link = LIST_FIRST(&racct->r_rule_links);
2175 LIST_REMOVE(link, rrl_next);
2176 rctl_rule_release(link->rrl_rule);
2177 uma_zfree(rctl_rule_link_zone, link);
2188 rctl_rule_zone = uma_zcreate(
"rctl_rule",
sizeof(
struct rctl_rule),
2189 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
2190 rctl_rule_link_zone = uma_zcreate(
"rctl_rule_link",
2191 sizeof(
struct rctl_rule_link), NULL, NULL, NULL, NULL,
2200 if (rctl_throttle_min < 1)
2201 rctl_throttle_min = 1;
2202 if (rctl_throttle_max < rctl_throttle_min)
2203 rctl_throttle_max = 2 *
hz;
2204 if (rctl_throttle_pct < 0)
2205 rctl_throttle_pct = 100;
2206 if (rctl_throttle_pct2 < 0)
2207 rctl_throttle_pct2 = 100;
MALLOC_DEFINE(M_BINMISC, KMOD_NAME, "misc binary image activator")
SYSCTL_NODE(_kern, OID_AUTO, binmisc, CTLFLAG_RW|CTLFLAG_MPSAFE, 0, "Image activator for miscellaneous binaries")
SYSCTL_PROC(_kern_binmisc, OID_AUTO, add, CTLFLAG_MPSAFE|CTLTYPE_STRUCT|CTLFLAG_WR, NULL, IBC_ADD, sysctl_kern_binmisc, "S,ximgact_binmisc_entry", "Add an activator entry")
SYSINIT(imgact_binmisc, SI_SUB_EXEC, SI_ORDER_MIDDLE, imgact_binmisc_init, NULL)
TUNABLE_INT("kern.eventtimer.periodic", &want_periodic)
SYSCTL_UINT(_kern_eventtimer, OID_AUTO, idletick, CTLFLAG_RWTUN, &idletick, 0, "Run periodic events when idle")
FEATURE(kdtrace_hooks, "Kernel DTrace hooks which are required to load DTrace kernel modules")
void loginclass_free(struct loginclass *lc)
struct loginclass * loginclass_find(const char *name)
void loginclass_racct_foreach(void(*callback)(struct racct *racct, void *arg2, void *arg3), void(*pre)(void), void(*post)(void), void *arg2, void *arg3)
void *() malloc(size_t size, struct malloc_type *mtp, int flags)
void free(void *addr, struct malloc_type *mtp)
static struct pollrec pr[POLL_LIST_LEN]
int priv_check(struct thread *td, int priv)
struct proc * pfind(pid_t pid)
struct sx __exclusive_cache_line allproc_lock
int sys_rctl_remove_rule(struct thread *td, struct rctl_remove_rule_args *uap)
int sys_rctl_add_rule(struct thread *td, struct rctl_add_rule_args *uap)
int sys_rctl_get_limits(struct thread *td, struct rctl_get_limits_args *uap)
int sys_rctl_get_racct(struct thread *td, struct rctl_get_racct_args *uap)
int sys_rctl_get_rules(struct thread *td, struct rctl_get_rules_args *uap)
void uifree(struct uidinfo *uip)
void uihold(struct uidinfo *uip)
struct uidinfo * uifind(uid_t uid)
void panic(const char *fmt,...)
void kern_psignal(struct proc *p, int sig)
int sysctl_handle_int(SYSCTL_HANDLER_ARGS)
int ppsratecheck(struct timeval *lasttime, int *curpps, int maxpps)
void devctl_notify(const char *system, const char *subsystem, const char *type, const char *data)
Send a 'notification' to userland, using standard ways.
int printf(const char *fmt,...)
int sbuf_finish(struct sbuf *s)
void sbuf_delete(struct sbuf *s)
int sbuf_printf(struct sbuf *s, const char *fmt,...)
ssize_t sbuf_len(struct sbuf *s)
char * sbuf_data(struct sbuf *s)
int sbuf_error(const struct sbuf *s)
int sbuf_setpos(struct sbuf *s, ssize_t pos)
struct sbuf * sbuf_new(struct sbuf *s, char *buf, int length, int flags)
int taskqueue_enqueue(struct taskqueue *queue, struct task *task)