`cpuset -g -x N` along with requested information always prints message `cpuset: getdomain: Invalid argument'. The EINVAL is returned from kern_cpuset_getdomain(), since it doesn't expect CPU_LEVEL_WHICH and CPU_WHICH_IRQ parameters. To fix the error, do not call cpuset_getdomain() when `-x' is specified. MFC after: 1 week
474 lines
11 KiB
C
474 lines
11 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2007, 2008 Jeffrey Roberson <jeff@freebsd.org>
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* All rights reserved.
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*
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* Copyright (c) 2008 Nokia Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/cpuset.h>
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#include <sys/domainset.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <jail.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <string.h>
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static int Cflag;
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static int cflag;
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static int dflag;
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static int gflag;
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static int iflag;
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static int jflag;
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static int lflag;
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static int nflag;
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static int pflag;
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static int rflag;
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static int sflag;
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static int tflag;
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static int xflag;
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static id_t id;
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static cpulevel_t level;
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static cpuwhich_t which;
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static void usage(void);
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struct numa_policy {
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const char *name;
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int policy;
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};
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static struct numa_policy policies[] = {
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{ "round-robin", DOMAINSET_POLICY_ROUNDROBIN },
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{ "rr", DOMAINSET_POLICY_ROUNDROBIN },
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{ "first-touch", DOMAINSET_POLICY_FIRSTTOUCH },
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{ "ft", DOMAINSET_POLICY_FIRSTTOUCH },
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{ "prefer", DOMAINSET_POLICY_PREFER },
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{ "interleave", DOMAINSET_POLICY_INTERLEAVE},
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{ "il", DOMAINSET_POLICY_INTERLEAVE},
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{ NULL, DOMAINSET_POLICY_INVALID }
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};
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static void printset(struct bitset *mask, int size);
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static void
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parselist(char *list, struct bitset *mask, int size)
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{
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enum { NONE, NUM, DASH } state;
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int lastnum;
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int curnum;
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char *l;
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state = NONE;
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curnum = lastnum = 0;
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for (l = list; *l != '\0';) {
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if (isdigit(*l)) {
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curnum = atoi(l);
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if (curnum >= size)
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errx(EXIT_FAILURE,
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"List entry %d exceeds maximum of %d",
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curnum, size - 1);
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while (isdigit(*l))
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l++;
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switch (state) {
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case NONE:
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lastnum = curnum;
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state = NUM;
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break;
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case DASH:
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for (; lastnum <= curnum; lastnum++)
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BIT_SET(size, lastnum, mask);
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state = NONE;
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break;
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case NUM:
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default:
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goto parserr;
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}
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continue;
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}
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switch (*l) {
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case ',':
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switch (state) {
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case NONE:
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break;
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case NUM:
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BIT_SET(size, curnum, mask);
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state = NONE;
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break;
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case DASH:
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goto parserr;
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break;
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}
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break;
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case '-':
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if (state != NUM)
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goto parserr;
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state = DASH;
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break;
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default:
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goto parserr;
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}
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l++;
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}
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switch (state) {
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case NONE:
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break;
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case NUM:
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BIT_SET(size, curnum, mask);
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break;
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case DASH:
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goto parserr;
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}
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return;
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parserr:
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errx(EXIT_FAILURE, "Malformed list %s", list);
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}
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static void
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parsecpulist(char *list, cpuset_t *mask)
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{
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if (strcasecmp(list, "all") == 0) {
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if (cpuset_getaffinity(CPU_LEVEL_ROOT, CPU_WHICH_PID, -1,
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sizeof(*mask), mask) != 0)
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err(EXIT_FAILURE, "getaffinity");
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return;
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}
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parselist(list, (struct bitset *)mask, CPU_SETSIZE);
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}
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/*
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* permissively parse policy:domain list
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* allow:
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* round-robin:0-4 explicit
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* round-robin:all explicit root domains
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* 0-4 implicit root policy
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* round-robin implicit root domains
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* all explicit root domains and implicit policy
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*/
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static void
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parsedomainlist(char *list, domainset_t *mask, int *policyp)
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{
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domainset_t rootmask;
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struct numa_policy *policy;
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char *l;
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int p;
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/*
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* Use the rootset's policy as the default for unspecified policies.
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*/
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if (cpuset_getdomain(CPU_LEVEL_ROOT, CPU_WHICH_PID, -1,
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sizeof(rootmask), &rootmask, &p) != 0)
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err(EXIT_FAILURE, "getdomain");
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l = list;
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for (policy = &policies[0]; policy->name != NULL; policy++) {
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if (strncasecmp(l, policy->name, strlen(policy->name)) == 0) {
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p = policy->policy;
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l += strlen(policy->name);
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if (*l != ':' && *l != '\0')
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errx(EXIT_FAILURE, "Malformed list %s", list);
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if (*l == ':')
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l++;
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break;
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}
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}
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*policyp = p;
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if (strcasecmp(l, "all") == 0 || *l == '\0') {
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DOMAINSET_COPY(&rootmask, mask);
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return;
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}
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parselist(l, (struct bitset *)mask, DOMAINSET_SETSIZE);
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}
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static void
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printset(struct bitset *mask, int size)
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{
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int once;
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int bit;
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for (once = 0, bit = 0; bit < size; bit++) {
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if (BIT_ISSET(size, bit, mask)) {
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if (once == 0) {
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printf("%d", bit);
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once = 1;
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} else
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printf(", %d", bit);
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}
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}
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printf("\n");
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}
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static const char *whichnames[] = { NULL, "tid", "pid", "cpuset", "irq", "jail",
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"domain" };
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static const char *levelnames[] = { NULL, " root", " cpuset", "" };
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static const char *policynames[] = { "invalid", "round-robin", "first-touch",
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"prefer", "interleave" };
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static void
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printaffinity(void)
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{
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domainset_t domain;
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cpuset_t mask;
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int policy;
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if (cpuset_getaffinity(level, which, id, sizeof(mask), &mask) != 0)
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err(EXIT_FAILURE, "getaffinity");
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printf("%s %jd%s mask: ", whichnames[which], (intmax_t)id,
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levelnames[level]);
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printset((struct bitset *)&mask, CPU_SETSIZE);
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if (dflag || xflag)
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goto out;
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if (cpuset_getdomain(level, which, id, sizeof(domain), &domain,
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&policy) != 0)
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err(EXIT_FAILURE, "getdomain");
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printf("%s %jd%s domain policy: %s mask: ", whichnames[which],
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(intmax_t)id, levelnames[level], policynames[policy]);
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printset((struct bitset *)&domain, DOMAINSET_SETSIZE);
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out:
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exit(EXIT_SUCCESS);
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}
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static void
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printsetid(void)
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{
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cpusetid_t setid;
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/*
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* Only LEVEL_WHICH && WHICH_CPUSET has a numbered id.
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*/
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if (level == CPU_LEVEL_WHICH && !sflag)
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level = CPU_LEVEL_CPUSET;
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if (cpuset_getid(level, which, id, &setid))
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err(errno, "getid");
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printf("%s %jd%s id: %d\n", whichnames[which], (intmax_t)id,
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levelnames[level], setid);
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}
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int
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main(int argc, char *argv[])
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{
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domainset_t domains;
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cpusetid_t setid;
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cpuset_t mask;
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int policy;
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lwpid_t tid;
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pid_t pid;
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int ch;
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CPU_ZERO(&mask);
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DOMAINSET_ZERO(&domains);
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policy = DOMAINSET_POLICY_INVALID;
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level = CPU_LEVEL_WHICH;
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which = CPU_WHICH_PID;
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id = pid = tid = setid = -1;
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while ((ch = getopt(argc, argv, "Ccd:gij:l:n:p:rs:t:x:")) != -1) {
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switch (ch) {
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case 'C':
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Cflag = 1;
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break;
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case 'c':
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cflag = 1;
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level = CPU_LEVEL_CPUSET;
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break;
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case 'd':
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dflag = 1;
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which = CPU_WHICH_DOMAIN;
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id = atoi(optarg);
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break;
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case 'g':
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gflag = 1;
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break;
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case 'i':
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iflag = 1;
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break;
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case 'j':
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jflag = 1;
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which = CPU_WHICH_JAIL;
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id = jail_getid(optarg);
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if (id < 0)
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errx(EXIT_FAILURE, "%s", jail_errmsg);
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break;
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case 'l':
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lflag = 1;
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parsecpulist(optarg, &mask);
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break;
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case 'n':
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nflag = 1;
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parsedomainlist(optarg, &domains, &policy);
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break;
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case 'p':
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pflag = 1;
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which = CPU_WHICH_PID;
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id = pid = atoi(optarg);
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break;
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case 'r':
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level = CPU_LEVEL_ROOT;
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rflag = 1;
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break;
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case 's':
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sflag = 1;
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which = CPU_WHICH_CPUSET;
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id = setid = atoi(optarg);
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break;
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case 't':
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tflag = 1;
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which = CPU_WHICH_TID;
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id = tid = atoi(optarg);
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break;
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case 'x':
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xflag = 1;
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which = CPU_WHICH_IRQ;
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id = atoi(optarg);
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (gflag) {
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if (argc || Cflag || lflag || nflag)
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usage();
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/* Only one identity specifier. */
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if (dflag + jflag + xflag + sflag + pflag + tflag > 1)
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usage();
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if (iflag)
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printsetid();
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else
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printaffinity();
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exit(EXIT_SUCCESS);
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}
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if (dflag || iflag || rflag)
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usage();
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/*
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* The user wants to run a command with a set and possibly cpumask.
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*/
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if (argc) {
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if (Cflag || pflag || tflag || xflag || jflag)
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usage();
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if (sflag) {
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if (cpuset_setid(CPU_WHICH_PID, -1, setid))
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err(argc, "setid");
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} else {
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if (cpuset(&setid))
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err(argc, "newid");
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}
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if (lflag) {
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if (cpuset_setaffinity(level, CPU_WHICH_PID,
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-1, sizeof(mask), &mask) != 0)
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err(EXIT_FAILURE, "setaffinity");
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}
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if (nflag) {
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if (cpuset_setdomain(level, CPU_WHICH_PID,
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-1, sizeof(domains), &domains, policy) != 0)
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err(EXIT_FAILURE, "setdomain");
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}
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errno = 0;
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execvp(*argv, argv);
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err(errno == ENOENT ? 127 : 126, "%s", *argv);
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}
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/*
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* We're modifying something that presently exists.
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*/
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if (Cflag && (jflag || !pflag || sflag || tflag || xflag))
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usage();
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if ((!lflag && !nflag) && cflag)
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usage();
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if ((!lflag && !nflag) && !(Cflag || sflag))
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usage();
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/* You can only set a mask on a thread. */
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if (tflag && (sflag | pflag | xflag | jflag))
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usage();
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/* You can only set a mask on an irq. */
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if (xflag && (jflag | pflag | sflag | tflag))
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usage();
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if (Cflag) {
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/*
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* Create a new cpuset and move the specified process
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* into the set.
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*/
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if (cpuset(&setid) < 0)
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err(EXIT_FAILURE, "newid");
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sflag = 1;
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}
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if (pflag && sflag) {
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if (cpuset_setid(CPU_WHICH_PID, pid, setid))
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err(EXIT_FAILURE, "setid");
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/*
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* If the user specifies a set and a list we want the mask
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* to effect the pid and not the set.
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*/
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which = CPU_WHICH_PID;
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id = pid;
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}
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if (lflag) {
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if (cpuset_setaffinity(level, which, id, sizeof(mask),
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&mask) != 0)
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err(EXIT_FAILURE, "setaffinity");
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}
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if (nflag) {
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if (cpuset_setdomain(level, which, id, sizeof(domains),
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&domains, policy) != 0)
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err(EXIT_FAILURE, "setdomain");
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}
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exit(EXIT_SUCCESS);
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}
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: cpuset [-l cpu-list] [-n policy:domain-list] [-s setid] cmd ...\n");
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fprintf(stderr,
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" cpuset [-l cpu-list] [-n policy:domain-list] [-s setid] -p pid\n");
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fprintf(stderr,
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" cpuset [-c] [-l cpu-list] [-n policy:domain-list] -C -p pid\n");
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fprintf(stderr,
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" cpuset [-c] [-l cpu-list] [-n policy:domain-list]\n"
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" [-j jailid | -p pid | -t tid | -s setid | -x irq]\n");
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fprintf(stderr,
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" cpuset -g [-cir]\n"
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" [-d domain | -j jailid | -p pid | -t tid | -s setid | -x irq]\n");
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exit(1);
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}
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