1 /*
2 * Copyright (c) 2014, The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google, Inc. nor the names of its contributors
15 * may be used to endorse or promote products derived from this
16 * software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
25 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
28 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <stdio.h>
33 #include <unistd.h>
34 #include <stdlib.h>
35 #include <sys/time.h>
36 #include <sys/resource.h>
37
38 static void
usage(const char * s)39 usage(const char *s)
40 {
41 fprintf(stderr, "usage: %s pid resource cur max\n", s);
42 exit(EXIT_FAILURE);
43 }
44
prlimit_main(int argc,char * argv[])45 int prlimit_main(int argc, char *argv[])
46 {
47 pid_t pid;
48 struct rlimit64 rl;
49 int resource;
50 int rc;
51
52 if (argc != 5)
53 usage(*argv);
54
55 if (sscanf(argv[1], "%d", &pid) != 1)
56 usage(*argv);
57
58 if (sscanf(argv[2], "%d", &resource) != 1)
59 usage(*argv);
60
61 if (sscanf(argv[3], "%llu", &rl.rlim_cur) != 1)
62 usage(*argv);
63
64 if (sscanf(argv[4], "%llu", &rl.rlim_max) != 1)
65 usage(*argv);
66
67 printf("setting resource %d of pid %d to [%llu,%llu]\n", resource, pid,
68 rl.rlim_cur, rl.rlim_max);
69 rc = prlimit64(pid, resource, &rl, NULL);
70 if (rc < 0) {
71 perror("prlimit");
72 exit(EXIT_FAILURE);
73 }
74
75 return 0;
76 }
77