7551d83c35
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
368 lines
7.9 KiB
C
368 lines
7.9 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 <ctype.h>
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#include <err.h>
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#include <errno.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 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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static void printset(cpuset_t *mask);
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static void
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parselist(char *list, cpuset_t *mask)
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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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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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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 > CPU_SETSIZE)
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errx(EXIT_FAILURE,
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"Only %d cpus supported", CPU_SETSIZE);
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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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CPU_SET(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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CPU_SET(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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CPU_SET(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 cpu-list %s", list);
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}
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static void
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printset(cpuset_t *mask)
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{
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int once;
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int cpu;
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for (once = 0, cpu = 0; cpu < CPU_SETSIZE; cpu++) {
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if (CPU_ISSET(cpu, mask)) {
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if (once == 0) {
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printf("%d", cpu);
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once = 1;
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} else
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printf(", %d", cpu);
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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 void
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printaffinity(void)
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{
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cpuset_t mask;
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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(&mask);
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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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cpusetid_t setid;
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cpuset_t mask;
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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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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: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 = atoi(optarg);
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break;
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case 'l':
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lflag = 1;
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parselist(optarg, &mask);
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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)
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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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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 && cflag)
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usage();
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if (!lflag && !(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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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] [-s setid] cmd ...\n");
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fprintf(stderr,
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" cpuset [-l cpu-list] [-s setid] -p pid\n");
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fprintf(stderr,
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" cpuset [-c] [-l cpu-list] -C -p pid\n");
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fprintf(stderr,
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" cpuset [-c] [-l cpu-list] [-j jailid | -p pid | -t tid | -s setid | -x irq]\n");
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fprintf(stderr,
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" cpuset -g [-cir] [-d domain | -j jailid | -p pid | -t tid | -s setid |\n"
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" -x irq]\n");
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exit(1);
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}
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