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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
58db1d6e ACM |
2 | #include "units.h" |
3 | #include <inttypes.h> | |
3caeafce ACM |
4 | #include <limits.h> |
5 | #include <stdlib.h> | |
6 | #include <string.h> | |
58db1d6e ACM |
7 | #include <linux/kernel.h> |
8 | #include <linux/time64.h> | |
9 | ||
3caeafce ACM |
10 | unsigned long parse_tag_value(const char *str, struct parse_tag *tags) |
11 | { | |
12 | struct parse_tag *i = tags; | |
13 | ||
14 | while (i->tag) { | |
15 | char *s = strchr(str, i->tag); | |
16 | ||
17 | if (s) { | |
18 | unsigned long int value; | |
19 | char *endptr; | |
20 | ||
21 | value = strtoul(str, &endptr, 10); | |
22 | if (s != endptr) | |
23 | break; | |
24 | ||
25 | if (value > ULONG_MAX / i->mult) | |
26 | break; | |
27 | value *= i->mult; | |
28 | return value; | |
29 | } | |
30 | i++; | |
31 | } | |
32 | ||
33 | return (unsigned long) -1; | |
34 | } | |
35 | ||
58db1d6e ACM |
36 | unsigned long convert_unit(unsigned long value, char *unit) |
37 | { | |
38 | *unit = ' '; | |
39 | ||
40 | if (value > 1000) { | |
41 | value /= 1000; | |
42 | *unit = 'K'; | |
43 | } | |
44 | ||
45 | if (value > 1000) { | |
46 | value /= 1000; | |
47 | *unit = 'M'; | |
48 | } | |
49 | ||
50 | if (value > 1000) { | |
51 | value /= 1000; | |
52 | *unit = 'G'; | |
53 | } | |
54 | ||
55 | return value; | |
56 | } | |
57 | ||
58 | int unit_number__scnprintf(char *buf, size_t size, u64 n) | |
59 | { | |
60 | char unit[4] = "BKMG"; | |
61 | int i = 0; | |
62 | ||
63 | while (((n / 1024) > 1) && (i < 3)) { | |
64 | n /= 1024; | |
65 | i++; | |
66 | } | |
67 | ||
68 | return scnprintf(buf, size, "%" PRIu64 "%c", n, unit[i]); | |
69 | } |