1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*
* Check decoding of close_range syscall.
*
* Copyright (c) 2020-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <linux/close_range.h>
static const char *errstr;
static long
k_close_range(const unsigned int fd1, const unsigned int fd2, const unsigned int flags)
{
const kernel_ulong_t fill = (kernel_ulong_t) 0xdefaced00000000ULL;
const kernel_ulong_t bad = (kernel_ulong_t) 0xbadc0dedbadc0dedULL;
const kernel_ulong_t arg1 = fill | fd1;
const kernel_ulong_t arg2 = fill | fd2;
const kernel_ulong_t arg3 = fill | flags;
const long rc = syscall(__NR_close_range, arg1, arg2, arg3, bad, bad, bad);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
k_close_range(-2U, -1U, 1);
printf("close_range(%u, %u, 0x1 /* CLOSE_RANGE_??? */) = %s\n",
-2U, -1U, errstr);
k_close_range(-1U, -2U, 2);
printf("close_range(%u, %u, CLOSE_RANGE_UNSHARE) = %s\n",
-1U, -2U, errstr);
k_close_range(-3U, 0, 4);
printf("close_range(%u, 0, CLOSE_RANGE_CLOEXEC) = %s\n", -3U, errstr);
k_close_range(0, -4U, -1);
printf("close_range(0, %u"
", CLOSE_RANGE_UNSHARE|CLOSE_RANGE_CLOEXEC|%#x) = %s\n",
-4U, (-1U & ~(CLOSE_RANGE_UNSHARE | CLOSE_RANGE_CLOEXEC)),
errstr);
k_close_range(-5U, 7, 0);
printf("close_range(%u, 7, 0) = %s\n", -5U, errstr);
k_close_range(7, -6U, 1);
printf("close_range(7, %u, 0x1 /* CLOSE_RANGE_??? */) = %s\n",
-6U, errstr);
k_close_range(7, 7, 8);
printf("close_range(7, 7, 0x8 /* CLOSE_RANGE_??? */) = %s\n", errstr);
k_close_range(-7U, -7U, 7);
printf("close_range(%u, %u"
", CLOSE_RANGE_UNSHARE|CLOSE_RANGE_CLOEXEC|0x1) = %s\n",
-7U, -7U, errstr);
k_close_range(7, 0, 0);
printf("close_range(7, 0, 0) = %s\n", errstr);
k_close_range(0, 0, 0);
printf("close_range(0, 0, 0) = %s\n", errstr);
k_close_range(7, -1U, 0);
printf("close_range(7, %u, 0) = %s\n", -1U, errstr);
puts("+++ exited with 0 +++");
return 0;
}
|
