selftests/bpf: Fix progs/test_deny_namespace.c issues.

The following build error can be seen:
progs/test_deny_namespace.c:22:19: error: call to undeclared function 'BIT_LL'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
        __u64 cap_mask = BIT_LL(CAP_SYS_ADMIN);

The struct kernel_cap_struct no longer exists in the kernel as well.
Adjust bpf prog to fix both issues.

Fixes: f122a08b197d ("capability: just use a 'u64' instead of a 'u32[2]' array")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/testing/selftests/bpf/progs/test_deny_namespace.c b/tools/testing/selftests/bpf/progs/test_deny_namespace.c
index 591104e79812ef2918c23f84b692790fe519f8fc..e96b901a733c5878d48de3dc1dcc3f4dd32f89af 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_deny_namespace.c
+++ b/tools/testing/selftests/bpf/progs/test_deny_namespace.c
@@ -5,12 +5,10 @@
 #include <errno.h>
 #include <linux/capability.h>
 
-struct kernel_cap_struct {
-       __u64 val;
-} __attribute__((preserve_access_index));
+typedef struct { unsigned long long val; } kernel_cap_t;
 
 struct cred {
-       struct kernel_cap_struct cap_effective;
+       kernel_cap_t cap_effective;
 } __attribute__((preserve_access_index));
 
 char _license[] SEC("license") = "GPL";
@@ -18,8 +16,8 @@ char _license[] SEC("license") = "GPL";
 SEC("lsm.s/userns_create")
 int BPF_PROG(test_userns_create, const struct cred *cred, int ret)
 {
-       struct kernel_cap_struct caps = cred->cap_effective;
-       __u64 cap_mask = BIT_LL(CAP_SYS_ADMIN);
+       kernel_cap_t caps = cred->cap_effective;
+       __u64 cap_mask = 1ULL << CAP_SYS_ADMIN;
 
        if (ret)
                return 0;