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ARM: boot: Add an implementation of strnlen for libfdt

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Recent versions of libfdt add a dependency on strnlen. Copy the
implementation in lib/string.c here, so we can update libfdt.

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Rob Herring 2016-02-11 16:59:12 -06:00
parent 60c7f4cb1f
commit 76df69806b
1 changed files with 9 additions and 0 deletions
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9
arch/arm/boot/compressed/string.c
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@ -65,6 +65,15 @@ size_t strlen(const char *s)
return sc - s; return sc - s;
} }
size_t strnlen(const char *s, size_t count)
{
const char *sc;
for (sc = s; count-- && *sc != '\0'; ++sc)
/* nothing */;
return sc - s;
}
int memcmp(const void *cs, const void *ct, size_t count) int memcmp(const void *cs, const void *ct, size_t count)
{ {
const unsigned char *su1 = cs, *su2 = ct, *end = su1 + count; const unsigned char *su1 = cs, *su2 = ct, *end = su1 + count;