1 /*
2 * Check decoding of prlimit64 syscall.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "tests.h"
31 #include <asm/unistd.h>
32
33 #ifdef __NR_prlimit64
34
35 # include <inttypes.h>
36 # include <stdio.h>
37 # include <stdint.h>
38 # include <sys/resource.h>
39 # include <unistd.h>
40
41 # include "xlat.h"
42 # include "xlat/resources.h"
43
44 const char *
sprint_rlim(uint64_t lim)45 sprint_rlim(uint64_t lim)
46 {
47 if (lim == -1ULL)
48 return "RLIM64_INFINITY";
49
50 static char buf[2][sizeof(lim)*3 + sizeof("*1024")];
51 static int i;
52 i &= 1;
53 if (lim > 1024 && lim % 1024 == 0)
54 sprintf(buf[i], "%" PRIu64 "*1024", lim / 1024);
55 else
56 sprintf(buf[i], "%" PRIu64, lim);
57
58 return buf[i++];
59 }
60
61 int
main(void)62 main(void)
63 {
64 unsigned long pid =
65 (unsigned long) 0xdefaced00000000ULL | (unsigned) getpid();
66 uint64_t *const rlimit = tail_alloc(sizeof(*rlimit) * 2);
67 const struct xlat *xlat;
68
69 for (xlat = resources; xlat->str; ++xlat) {
70 unsigned long res = 0xfacefeed00000000ULL | xlat->val;
71 long rc = syscall(__NR_prlimit64, pid, res, 0, rlimit);
72 if (rc)
73 printf("prlimit64(%d, %s, NULL, %p) = %ld %s (%m)\n",
74 (unsigned) pid, xlat->str, rlimit,
75 rc, errno2name());
76 else
77 printf("prlimit64(%d, %s, NULL"
78 ", {rlim_cur=%s, rlim_max=%s}) = 0\n",
79 (unsigned) pid, xlat->str,
80 sprint_rlim(rlimit[0]),
81 sprint_rlim(rlimit[1]));
82 }
83
84 puts("+++ exited with 0 +++");
85 return 0;
86 }
87
88 #else
89
90 SKIP_MAIN_UNDEFINED("__NR_prlimit64")
91
92 #endif
93