]>
git.ipfire.org Git - thirdparty/systemd.git/blob - src/basic/cap-list.c
2 This file is part of systemd.
4 Copyright 2014 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23 #include "alloc-util.h"
24 #include "capability-util.h"
26 #include "extract-word.h"
29 #include "parse-util.h"
32 static const struct capability_name
* lookup_capability(register const char *str
, register GPERF_LEN_TYPE len
);
34 #include "cap-from-name.h"
35 #include "cap-to-name.h"
37 const char *capability_to_name(int id
) {
42 if (id
>= (int) ELEMENTSOF(capability_names
))
45 return capability_names
[id
];
48 int capability_from_name(const char *name
) {
49 const struct capability_name
*sc
;
54 /* Try to parse numeric capability */
55 r
= safe_atoi(name
, &i
);
59 /* Try to parse string capability */
60 sc
= lookup_capability(name
, strlen(name
));
67 int capability_list_length(void) {
68 return (int) ELEMENTSOF(capability_names
);
71 int capability_set_to_string_alloc(uint64_t set
, char **s
) {
72 _cleanup_free_
char *str
= NULL
;
74 size_t allocated
= 0, n
= 0;
78 for (i
= 0; i
< cap_last_cap(); i
++)
79 if (set
& (UINT64_C(1) << i
)) {
83 p
= capability_to_name(i
);
89 if (!GREEDY_REALLOC(str
, allocated
, n
+ add
+ 2))
92 strcpy(mempcpy(str
+ n
, p
, add
), " ");
96 if (!GREEDY_REALLOC(str
, allocated
, n
+ 1))
99 str
[n
> 0 ? n
- 1 : 0] = '\0'; /* truncate the last space, if it's there */
107 int capability_set_from_string(const char *s
, uint64_t *set
) {
114 _cleanup_free_
char *word
= NULL
;
117 r
= extract_first_word(&p
, &word
, NULL
, EXTRACT_QUOTES
);
123 r
= capability_from_name(word
);
127 val
|= ((uint64_t) UINT64_C(1)) << (uint64_t) r
;