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xfrm: use memcpy to suppress gcc phony buffer overflow warning. 

This bug is reported from below link:
https://bugzilla.redhat.com/show_bug.cgi?id=982761

An simplified command from its original reproducing method in bugzilla:
ip xfrm state add src 10.0.0.2 dst 10.0.0.1 proto ah spi 0x12345678 auth md5 12
will cause below spew from gcc.

Reported-by: Sohny Thomas <sthomas@linux.vnet.ibm.com>
This commit is contained in:
Fan Du 2013-09-30 21:09:05 -07:00 committed by Stephen Hemminger
parent 101847446e
commit 99500b56d9
1 changed files with 1 additions and 1 deletions
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2
ip/xfrm_state.c
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@ -162,7 +162,7 @@ static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
if (len > max) if (len > max)
invarg("ALGO-KEYMAT value makes buffer overflow\n", key); invarg("ALGO-KEYMAT value makes buffer overflow\n", key);
strncpy(buf, key, len); memcpy(buf, key, len);
} }
} }