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
38 int
cpuset_parselist(const char * list,cpuset_t * mask)39 cpuset_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);
111 parserr:
112 return (CPUSET_PARSE_ERROR);
113 }
114