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
80
81
82
83
84
85
|
/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2017 Yu Watanabe
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <stdio.h>
#include "alloc-util.h"
#include "extract-word.h"
#include "securebits.h"
#include "securebits-util.h"
#include "string-util.h"
int secure_bits_to_string_alloc(int i, char **s) {
_cleanup_free_ char *str = NULL;
size_t len;
int r;
assert(s);
r = asprintf(&str, "%s%s%s%s%s%s",
(i & (1 << SECURE_KEEP_CAPS)) ? "keep-caps " : "",
(i & (1 << SECURE_KEEP_CAPS_LOCKED)) ? "keep-caps-locked " : "",
(i & (1 << SECURE_NO_SETUID_FIXUP)) ? "no-setuid-fixup " : "",
(i & (1 << SECURE_NO_SETUID_FIXUP_LOCKED)) ? "no-setuid-fixup-locked " : "",
(i & (1 << SECURE_NOROOT)) ? "noroot " : "",
(i & (1 << SECURE_NOROOT_LOCKED)) ? "noroot-locked " : "");
if (r < 0)
return -ENOMEM;
len = strlen(str);
if (len != 0)
str[len - 1] = '\0';
*s = TAKE_PTR(str);
return 0;
}
int secure_bits_from_string(const char *s) {
int secure_bits = 0;
const char *p;
int r;
for (p = s;;) {
_cleanup_free_ char *word = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
if (r == -ENOMEM)
return r;
if (r <= 0)
break;
if (streq(word, "keep-caps"))
secure_bits |= 1 << SECURE_KEEP_CAPS;
else if (streq(word, "keep-caps-locked"))
secure_bits |= 1 << SECURE_KEEP_CAPS_LOCKED;
else if (streq(word, "no-setuid-fixup"))
secure_bits |= 1 << SECURE_NO_SETUID_FIXUP;
else if (streq(word, "no-setuid-fixup-locked"))
secure_bits |= 1 << SECURE_NO_SETUID_FIXUP_LOCKED;
else if (streq(word, "noroot"))
secure_bits |= 1 << SECURE_NOROOT;
else if (streq(word, "noroot-locked"))
secure_bits |= 1 << SECURE_NOROOT_LOCKED;
}
return secure_bits;
}
|
