| 1 | |
| 2 | * linux/lib/kasprintf.c
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| 3 | *
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| 4 | * Copyright (C) 1991, 1992 Linus Torvalds
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| 5 |
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| 6 |
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| 7 | #include <stdarg.h>
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| 8 | #include <linux/module.h>
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| 9 | #include <linux/types.h>
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| 10 | #include <linux/string.h>
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| 11 |
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| 12 |
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| 13 | char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
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| 14 | {
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| 15 | unsigned int len;
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| 16 | char *p;
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| 17 | va_list aq;
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| 18 |
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| 19 | va_copy(aq, ap);
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| 20 | len = vsnprintf(NULL, 0, fmt, aq);
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| 21 | va_end(aq);
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| 22 |
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| 23 | p = kmalloc(len+1, gfp);
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| 24 | if (!p)
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| 25 | return NULL;
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| 26 |
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| 27 | vsnprintf(p, len+1, fmt, ap);
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| 28 |
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| 29 | return p;
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| 30 | }
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| 31 | EXPORT_SYMBOL(kvasprintf);
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| 32 |
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| 33 | char *kasprintf(gfp_t gfp, const char *fmt, ...)
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| 34 | {
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| 35 | va_list ap;
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| 36 | char *p;
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| 37 |
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| 38 | va_start(ap, fmt);
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| 39 | p = kvasprintf(gfp, fmt, ap);
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| 40 | va_end(ap);
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| 41 |
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| 42 | return p;
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| 43 | }
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| 44 | EXPORT_SYMBOL(kasprintf);
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