1/*
2 * Copyright (c) 2007, 2008 	Jeffrey Roberson <jeff@freebsd.org>
3 * All rights reserved.
4 *
5 * Copyright (c) 2008 Nokia Corporation
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/types.h>
31#include <sys/cpuset.h>
32
33#include <stdlib.h>
34#include <string.h>
35#include <libutil.h>
36#include <ctype.h>
37
38int
39cpuset_parselist(const char *list, cpuset_t *mask)
40{
41	enum { NONE, NUM, DASH } state;
42	int lastnum;
43	int curnum;
44	const char *l;
45
46	if (strcasecmp(list, "all") == 0) {
47		if (cpuset_getaffinity(CPU_LEVEL_ROOT, CPU_WHICH_PID, -1,
48		    sizeof(*mask), mask) != 0)
49			return (CPUSET_PARSE_GETAFFINITY);
50		return (CPUSET_PARSE_OK);
51	}
52	state = NONE;
53	curnum = lastnum = 0;
54	for (l = list; *l != '\0';) {
55		if (isdigit(*l)) {
56			curnum = atoi(l);
57			if (curnum > CPU_SETSIZE)
58				return (CPUSET_PARSE_INVALID_CPU);
59			while (isdigit(*l))
60				l++;
61			switch (state) {
62			case NONE:
63				lastnum = curnum;
64				state = NUM;
65				break;
66			case DASH:
67				for (; lastnum <= curnum; lastnum++)
68					CPU_SET(lastnum, mask);
69				state = NONE;
70				break;
71			case NUM:
72			default:
73				goto parserr;
74			}
75			continue;
76		}
77		switch (*l) {
78		case ',':
79			switch (state) {
80			case NONE:
81				break;
82			case NUM:
83				CPU_SET(curnum, mask);
84				state = NONE;
85				break;
86			case DASH:
87				goto parserr;
88				break;
89			}
90			break;
91		case '-':
92			if (state != NUM)
93				goto parserr;
94			state = DASH;
95			break;
96		default:
97			goto parserr;
98		}
99		l++;
100	}
101	switch (state) {
102		case NONE:
103			break;
104		case NUM:
105			CPU_SET(curnum, mask);
106			break;
107		case DASH:
108			goto parserr;
109	}
110	return (CPUSET_PARSE_OK);
111parserr:
112	return (CPUSET_PARSE_ERROR);
113}
114