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114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
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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/types.h>
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#include <sys/cpuset.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libutil.h>
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#include <ctype.h>
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int
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cpuset_parselist(const 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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const 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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return (CPUSET_PARSE_GETAFFINITY);
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return (CPUSET_PARSE_OK);
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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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return (CPUSET_PARSE_INVALID_CPU);
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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 (CPUSET_PARSE_OK);
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parserr:
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return (CPUSET_PARSE_ERROR);
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}
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