alpha/boot/tools/objstrip: fix the check for ELF header
authorAl Viro <viro@zeniv.linux.org.uk>
Mon, 9 Jan 2023 05:14:02 +0000 (00:14 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 10 Mar 2023 08:33:30 +0000 (09:33 +0100)
commit9b1f0df649467fbaf03deec4ec52d8d0b9d46df0
treed5b86394ae52bd90dc18962b013f5dc14c877963
parentfe4dd80d58ec5633daf5d50671d1341f738508bf
alpha/boot/tools/objstrip: fix the check for ELF header

[ Upstream commit 1878787797cbb019eeefe6f905514dcd557302b6 ]

Just memcmp() with ELFMAG - that's the normal way to do it in userland
code, which that thing is.  Besides, that has the benefit of actually
building - str_has_prefix() is *NOT* present in <string.h>.

Fixes: 5f14596e55de "alpha: Replace strncmp with str_has_prefix"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/alpha/boot/tools/objstrip.c