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authorPrashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>2018-10-09 03:04:50 +0200
committerAlexei Starovoitov <ast@kernel.org>2018-10-10 06:52:20 +0200
commit3b4a63f674e94795c9b76a41b36364b8aec232e1 (patch)
treee5dae37fa352f22915e661a36af033b646bcdede /kernel/bpf/arraymap.c
parentbpf: error handling when map_lookup_elem isn't supported (diff)
downloadlinux-3b4a63f674e94795c9b76a41b36364b8aec232e1.tar.xz
linux-3b4a63f674e94795c9b76a41b36364b8aec232e1.zip
bpf: return EOPNOTSUPP when map lookup isn't supported
Return ERR_PTR(-EOPNOTSUPP) from map_lookup_elem() methods of below map types: - BPF_MAP_TYPE_PROG_ARRAY - BPF_MAP_TYPE_STACK_TRACE - BPF_MAP_TYPE_XSKMAP - BPF_MAP_TYPE_SOCKMAP/BPF_MAP_TYPE_SOCKHASH Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/arraymap.c')
-rw-r--r--kernel/bpf/arraymap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index dded84cbe814..24583da9ffd1 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -449,7 +449,7 @@ static void fd_array_map_free(struct bpf_map *map)
static void *fd_array_map_lookup_elem(struct bpf_map *map, void *key)
{
- return NULL;
+ return ERR_PTR(-EOPNOTSUPP);
}
/* only called from syscall */