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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a4c35b6b | 2 | /*** |
a4c35b6b | 3 | Copyright 2015 Lennart Poettering |
a4c35b6b LP |
4 | ***/ |
5 | ||
dccca82b LP |
6 | #include <errno.h> |
7 | ||
91214a37 | 8 | #include "alloc-util.h" |
a4c35b6b LP |
9 | #include "macro.h" |
10 | #include "parse-util.h" | |
91214a37 | 11 | #include "proc-cmdline.h" |
081a0c72 | 12 | #include "string-table.h" |
a4c35b6b LP |
13 | #include "string-util.h" |
14 | #include "volatile-util.h" | |
15 | ||
91214a37 LP |
16 | int query_volatile_mode(VolatileMode *ret) { |
17 | _cleanup_free_ char *mode = NULL; | |
18 | VolatileMode m = VOLATILE_NO; | |
19 | int r; | |
20 | ||
21 | r = proc_cmdline_get_key("systemd.volatile", PROC_CMDLINE_VALUE_OPTIONAL, &mode); | |
22 | if (r < 0) | |
23 | return r; | |
24 | if (r == 0) | |
25 | goto finish; | |
26 | ||
27 | if (mode) { | |
28 | m = volatile_mode_from_string(mode); | |
29 | if (m < 0) | |
30 | return -EINVAL; | |
31 | } else | |
32 | m = VOLATILE_YES; | |
33 | ||
34 | r = 1; | |
35 | ||
36 | finish: | |
37 | *ret = m; | |
38 | return r; | |
39 | } | |
081a0c72 LP |
40 | |
41 | static const char* const volatile_mode_table[_VOLATILE_MODE_MAX] = { | |
42 | [VOLATILE_NO] = "no", | |
43 | [VOLATILE_YES] = "yes", | |
44 | [VOLATILE_STATE] = "state", | |
45 | }; | |
46 | ||
47 | DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(volatile_mode, VolatileMode, VOLATILE_YES); |