[PATCH bpf-next v5 3/5] bpf: expose bpf_strtol and bpf_strtoul to all program types

[Stanislav Fomichev <sdf@google.com>]

bpf_strncmp is already exposed everywhere. The motivation is to keep
those helpers in kernel/bpf/helpers.c. Otherwise it's tempting to move
them under kernel/bpf/cgroup.c because they are currently only used
by sysctl prog types.

Suggested-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
---
 kernel/bpf/cgroup.c  | 4 ----
 kernel/bpf/helpers.c | 6 +++++-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index 0bf2d70adfdb..121b5a5edb64 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -2132,10 +2132,6 @@ sysctl_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 		return func_proto;
 
 	switch (func_id) {
-	case BPF_FUNC_strtol:
-		return &bpf_strtol_proto;
-	case BPF_FUNC_strtoul:
-		return &bpf_strtoul_proto;
 	case BPF_FUNC_sysctl_get_name:
 		return &bpf_sysctl_get_name_proto;
 	case BPF_FUNC_sysctl_get_current_value:
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index 6439a877c18b..2f4709378740 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -427,6 +427,7 @@ const struct bpf_func_proto bpf_get_current_ancestor_cgroup_id_proto = {
 	.ret_type	= RET_INTEGER,
 	.arg1_type	= ARG_ANYTHING,
 };
+#endif /* CONFIG_CGROUPS */
 
 #define BPF_STRTOX_BASE_MASK 0x1F
 
@@ -555,7 +556,6 @@ const struct bpf_func_proto bpf_strtoul_proto = {
 	.arg3_type	= ARG_ANYTHING,
 	.arg4_type	= ARG_PTR_TO_LONG,
 };
-#endif
 
 BPF_CALL_3(bpf_strncmp, const char *, s1, u32, s1_sz, const char *, s2)
 {
@@ -1619,6 +1619,10 @@ bpf_base_func_proto(enum bpf_func_id func_id)
 		return &bpf_loop_proto;
 	case BPF_FUNC_strncmp:
 		return &bpf_strncmp_proto;
+	case BPF_FUNC_strtol:
+		return &bpf_strtol_proto;
+	case BPF_FUNC_strtoul:
+		return &bpf_strtoul_proto;
 	case BPF_FUNC_dynptr_from_mem:
 		return &bpf_dynptr_from_mem_proto;
 	case BPF_FUNC_dynptr_read:
-- 
2.37.1.595.g718a3a8f04-goog