tree 0845d6acfaf8221fb5d6ae3281cb1c33a8212cff
parent 29af0ebaa24d3078d7fd9747a49a763fe7f9ea3c
author David S. Miller <davem@davemloft.net> 1337734399 -0700
committer David S. Miller <davem@davemloft.net> 1337754747 -0700

sparc: Add full proper error handling to strncpy_from_user().

Linus removed the end-of-address-space hackery from
fs/namei.c:do_getname() so we really have to validate these edge
conditions and cannot cheat any more (as x86 used to as well).

Move to a common C implementation like x86 did.  And if both
src and dst are sufficiently aligned we'll do word at a time
copies and checks as well.

Signed-off-by: David S. Miller <davem@davemloft.net>