Revert "seccomp: add a selftest for get_metadata"

This reverts commit e65cd9a20343ea90f576c24c38ee85ab6e7d5fec.

Tommi T. Rrantala notes:

	PTRACE_SECCOMP_GET_METADATA was only added in 4.16
	(26500475ac1b499d8636ff281311d633909f5d20)

	And it's also breaking seccomp_bpf.c compilation for me:

	seccomp_bpf.c: In function ‘get_metadata’:
	seccomp_bpf.c:2878:26: error: storage size of ‘md’ isn’t known
	  struct seccomp_metadata md;

Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index e350cf3d4f901ab52c9c65446b2fa02139191e8b..194759ec9e7009534259a22ddcabfbca0ff8f02b 100644 (file)
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -145,15 +145,6 @@ struct seccomp_data {
 #define SECCOMP_FILTER_FLAG_SPEC_ALLOW (1UL << 2)
 #endif
 
-#ifndef PTRACE_SECCOMP_GET_METADATA
-#define PTRACE_SECCOMP_GET_METADATA    0x420d
-
-struct seccomp_metadata {
-       __u64 filter_off;       /* Input: which filter */
-       __u64 flags;             /* Output: filter's flags */
-};
-#endif
-
 #ifndef seccomp
 int seccomp(unsigned int op, unsigned int flags, void *args)
 {
@@ -2870,58 +2861,6 @@ TEST(get_action_avail)
        EXPECT_EQ(errno, EOPNOTSUPP);
 }
 
-TEST(get_metadata)
-{
-       pid_t pid;
-       int pipefd[2];
-       char buf;
-       struct seccomp_metadata md;
-
-       ASSERT_EQ(0, pipe(pipefd));
-
-       pid = fork();
-       ASSERT_GE(pid, 0);
-       if (pid == 0) {
-               struct sock_filter filter[] = {
-                       BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_ALLOW),
-               };
-               struct sock_fprog prog = {
-                       .len = (unsigned short)ARRAY_SIZE(filter),
-                       .filter = filter,
-               };
-
-               /* one with log, one without */
-               ASSERT_EQ(0, seccomp(SECCOMP_SET_MODE_FILTER,
-                                    SECCOMP_FILTER_FLAG_LOG, &prog));
-               ASSERT_EQ(0, seccomp(SECCOMP_SET_MODE_FILTER, 0, &prog));
-
-               ASSERT_EQ(0, close(pipefd[0]));
-               ASSERT_EQ(1, write(pipefd[1], "1", 1));
-               ASSERT_EQ(0, close(pipefd[1]));
-
-               while (1)
-                       sleep(100);
-       }
-
-       ASSERT_EQ(0, close(pipefd[1]));
-       ASSERT_EQ(1, read(pipefd[0], &buf, 1));
-
-       ASSERT_EQ(0, ptrace(PTRACE_ATTACH, pid));
-       ASSERT_EQ(pid, waitpid(pid, NULL, 0));
-
-       md.filter_off = 0;
-       ASSERT_EQ(sizeof(md), ptrace(PTRACE_SECCOMP_GET_METADATA, pid, sizeof(md), &md));
-       EXPECT_EQ(md.flags, SECCOMP_FILTER_FLAG_LOG);
-       EXPECT_EQ(md.filter_off, 0);
-
-       md.filter_off = 1;
-       ASSERT_EQ(sizeof(md), ptrace(PTRACE_SECCOMP_GET_METADATA, pid, sizeof(md), &md));
-       EXPECT_EQ(md.flags, 0);
-       EXPECT_EQ(md.filter_off, 1);
-
-       ASSERT_EQ(0, kill(pid, SIGKILL));
-}
-
 /*
  * TODO:
  * - add microbenchmarks