| 1 | |
| 2 | |
| 3 | * From lib/cmdline.c
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| 4 |
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| 5 | #include <stdlib.h>
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| 6 |
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| 7 | #if __has_attribute(__fallthrough__)
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| 8 | # define fallthrough __attribute__((__fallthrough__))
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| 9 | #else
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| 10 | # define fallthrough do {} while (0)
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| 11 | #endif
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| 12 |
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| 13 | unsigned long long memparse(const char *ptr, char **retptr)
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| 14 | {
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| 15 | char *endptr;
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| 16 |
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| 17 | unsigned long long ret = strtoll(ptr, &endptr, 0);
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| 18 |
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| 19 | switch (*endptr) {
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| 20 | case 'E':
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| 21 | case 'e':
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| 22 | ret <<= 10;
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| 23 | fallthrough;
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| 24 | case 'P':
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| 25 | case 'p':
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| 26 | ret <<= 10;
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| 27 | fallthrough;
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| 28 | case 'T':
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| 29 | case 't':
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| 30 | ret <<= 10;
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| 31 | fallthrough;
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| 32 | case 'G':
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| 33 | case 'g':
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| 34 | ret <<= 10;
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| 35 | fallthrough;
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| 36 | case 'M':
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| 37 | case 'm':
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| 38 | ret <<= 10;
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| 39 | fallthrough;
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| 40 | case 'K':
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| 41 | case 'k':
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| 42 | ret <<= 10;
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| 43 | endptr++;
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| 44 | fallthrough;
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| 45 | default:
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| 46 | break;
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| 47 | }
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| 48 |
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| 49 | if (retptr)
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| 50 | *retptr = endptr;
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| 51 |
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| 52 | return ret;
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| 53 | }
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