This set of tests checks that sendmsg calls are rejected (return -EPERM) when the sendmsg* hook returns 0. Replace those in bpf/test_sock_addr.c with corresponding tests in prog_tests/sock_addr.c.
Signed-off-by: Jordan Rife jrife@google.com --- .../selftests/bpf/prog_tests/sock_addr.c | 98 +++++++++++++++++++ .../selftests/bpf/progs/sendmsg4_prog.c | 6 ++ .../selftests/bpf/progs/sendmsg6_prog.c | 6 ++ tools/testing/selftests/bpf/test_sock_addr.c | 45 --------- 4 files changed, 110 insertions(+), 45 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/sock_addr.c b/tools/testing/selftests/bpf/prog_tests/sock_addr.c index 37e9ef5a5ae16..634f7a31b35db 100644 --- a/tools/testing/selftests/bpf/prog_tests/sock_addr.c +++ b/tools/testing/selftests/bpf/prog_tests/sock_addr.c @@ -443,7 +443,9 @@ BPF_SKEL_FUNCS(connect4_prog, connect_v4_prog); BPF_SKEL_FUNCS(connect6_prog, connect_v6_prog); BPF_SKEL_FUNCS(connect_unix_prog, connect_unix_prog); BPF_SKEL_FUNCS(sendmsg4_prog, sendmsg_v4_prog); +BPF_SKEL_FUNCS(sendmsg4_prog, sendmsg_v4_deny_prog); BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_prog); +BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_deny_prog); BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_preserve_dst_prog); BPF_SKEL_FUNCS(sendmsg_unix_prog, sendmsg_unix_prog); BPF_SKEL_FUNCS(recvmsg4_prog, recvmsg4_prog); @@ -766,6 +768,22 @@ static struct sock_addr_test tests[] = { SRC4_REWRITE_IP, SUCCESS, }, + { + SOCK_ADDR_TEST_SENDMSG, + "sendmsg4: sendmsg deny (dgram)", + sendmsg_v4_deny_prog_load, + sendmsg_v4_deny_prog_destroy, + BPF_CGROUP_UDP4_SENDMSG, + &user_ops, + AF_INET, + SOCK_DGRAM, + SERV4_IP, + SERV4_PORT, + SERV4_REWRITE_IP, + SERV4_REWRITE_PORT, + SRC4_REWRITE_IP, + SYSCALL_EPERM, + }, { SOCK_ADDR_TEST_SENDMSG, "sendmsg6: sendmsg (dgram)", @@ -798,6 +816,22 @@ static struct sock_addr_test tests[] = { SRC6_IP, SUCCESS, }, + { + SOCK_ADDR_TEST_SENDMSG, + "sendmsg6: sendmsg deny (dgram)", + sendmsg_v6_deny_prog_load, + sendmsg_v6_deny_prog_destroy, + BPF_CGROUP_UDP6_SENDMSG, + &user_ops, + AF_INET6, + SOCK_DGRAM, + SERV6_IP, + SERV6_PORT, + SERV6_REWRITE_IP, + SERV6_REWRITE_PORT, + SRC6_REWRITE_IP, + SYSCALL_EPERM, + }, { SOCK_ADDR_TEST_SENDMSG, "sendmsg_unix: sendmsg (dgram)", @@ -832,6 +866,22 @@ static struct sock_addr_test tests[] = { SRC4_REWRITE_IP, SUCCESS, }, + { + SOCK_ADDR_TEST_SENDMSG, + "sendmsg4: sock_sendmsg deny (dgram)", + sendmsg_v4_deny_prog_load, + sendmsg_v4_deny_prog_destroy, + BPF_CGROUP_UDP4_SENDMSG, + &kern_ops_sock_sendmsg, + AF_INET, + SOCK_DGRAM, + SERV4_IP, + SERV4_PORT, + SERV4_REWRITE_IP, + SERV4_REWRITE_PORT, + SRC4_REWRITE_IP, + SYSCALL_EPERM, + }, { SOCK_ADDR_TEST_SENDMSG, "sendmsg6: sock_sendmsg (dgram)", @@ -864,6 +914,22 @@ static struct sock_addr_test tests[] = { SRC6_IP, SUCCESS, }, + { + SOCK_ADDR_TEST_SENDMSG, + "sendmsg6: sock_sendmsg deny (dgram)", + sendmsg_v6_deny_prog_load, + sendmsg_v6_deny_prog_destroy, + BPF_CGROUP_UDP6_SENDMSG, + &kern_ops_sock_sendmsg, + AF_INET6, + SOCK_DGRAM, + SERV6_IP, + SERV6_PORT, + SERV6_REWRITE_IP, + SERV6_REWRITE_PORT, + SRC6_REWRITE_IP, + SYSCALL_EPERM, + }, { SOCK_ADDR_TEST_SENDMSG, "sendmsg_unix: sock_sendmsg (dgram)", @@ -898,6 +964,22 @@ static struct sock_addr_test tests[] = { SRC4_REWRITE_IP, SUCCESS, }, + { + SOCK_ADDR_TEST_SENDMSG, + "sendmsg4: kernel_sendmsg deny (dgram)", + sendmsg_v4_deny_prog_load, + sendmsg_v4_deny_prog_destroy, + BPF_CGROUP_UDP4_SENDMSG, + &kern_ops_kernel_sendmsg, + AF_INET, + SOCK_DGRAM, + SERV4_IP, + SERV4_PORT, + SERV4_REWRITE_IP, + SERV4_REWRITE_PORT, + SRC4_REWRITE_IP, + SYSCALL_EPERM, + }, { SOCK_ADDR_TEST_SENDMSG, "sendmsg6: kernel_sendmsg (dgram)", @@ -930,6 +1012,22 @@ static struct sock_addr_test tests[] = { SRC6_IP, SUCCESS, }, + { + SOCK_ADDR_TEST_SENDMSG, + "sendmsg6: kernel_sendmsg deny (dgram)", + sendmsg_v6_deny_prog_load, + sendmsg_v6_deny_prog_destroy, + BPF_CGROUP_UDP6_SENDMSG, + &kern_ops_kernel_sendmsg, + AF_INET6, + SOCK_DGRAM, + SERV6_IP, + SERV6_PORT, + SERV6_REWRITE_IP, + SERV6_REWRITE_PORT, + SRC6_REWRITE_IP, + SYSCALL_EPERM, + }, { SOCK_ADDR_TEST_SENDMSG, "sendmsg_unix: sock_sendmsg (dgram)", diff --git a/tools/testing/selftests/bpf/progs/sendmsg4_prog.c b/tools/testing/selftests/bpf/progs/sendmsg4_prog.c index 351e79aef2fae..edc159598a0ef 100644 --- a/tools/testing/selftests/bpf/progs/sendmsg4_prog.c +++ b/tools/testing/selftests/bpf/progs/sendmsg4_prog.c @@ -49,4 +49,10 @@ int sendmsg_v4_prog(struct bpf_sock_addr *ctx) return 1; }
+SEC("cgroup/sendmsg4") +int sendmsg_v4_deny_prog(struct bpf_sock_addr *ctx) +{ + return 0; +} + char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c index 03956a654ce58..0c1825cb994d6 100644 --- a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c +++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c @@ -65,4 +65,10 @@ int sendmsg_v6_preserve_dst_prog(struct bpf_sock_addr *ctx) return 1; }
+SEC("cgroup/sendmsg6") +int sendmsg_v6_deny_prog(struct bpf_sock_addr *ctx) +{ + return 0; +} + char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/test_sock_addr.c b/tools/testing/selftests/bpf/test_sock_addr.c index ab8ef02c9c556..91d88358090eb 100644 --- a/tools/testing/selftests/bpf/test_sock_addr.c +++ b/tools/testing/selftests/bpf/test_sock_addr.c @@ -92,7 +92,6 @@ static int bind4_prog_load(const struct sock_addr_test *test); static int bind6_prog_load(const struct sock_addr_test *test); static int connect4_prog_load(const struct sock_addr_test *test); static int connect6_prog_load(const struct sock_addr_test *test); -static int sendmsg_deny_prog_load(const struct sock_addr_test *test); static int sendmsg4_rw_asm_prog_load(const struct sock_addr_test *test); static int sendmsg6_rw_asm_prog_load(const struct sock_addr_test *test); static int sendmsg6_rw_v4mapped_prog_load(const struct sock_addr_test *test); @@ -258,20 +257,6 @@ static struct sock_addr_test tests[] = { SRC4_REWRITE_IP, SUCCESS, }, - { - "sendmsg4: deny call", - sendmsg_deny_prog_load, - BPF_CGROUP_UDP4_SENDMSG, - BPF_CGROUP_UDP4_SENDMSG, - AF_INET, - SOCK_DGRAM, - SERV4_IP, - SERV4_PORT, - SERV4_REWRITE_IP, - SERV4_REWRITE_PORT, - SRC4_REWRITE_IP, - SYSCALL_EPERM, - }, { "sendmsg6: load prog with wrong expected attach type", sendmsg6_rw_asm_prog_load, @@ -342,20 +327,6 @@ static struct sock_addr_test tests[] = { SRC6_REWRITE_IP, SUCCESS, }, - { - "sendmsg6: deny call", - sendmsg_deny_prog_load, - BPF_CGROUP_UDP6_SENDMSG, - BPF_CGROUP_UDP6_SENDMSG, - AF_INET6, - SOCK_DGRAM, - SERV6_IP, - SERV6_PORT, - SERV6_REWRITE_IP, - SERV6_REWRITE_PORT, - SRC6_REWRITE_IP, - SYSCALL_EPERM, - }, };
static int load_insns(const struct sock_addr_test *test, @@ -431,22 +402,6 @@ static int connect6_prog_load(const struct sock_addr_test *test) return load_path(test, CONNECT6_PROG_PATH); }
-static int xmsg_ret_only_prog_load(const struct sock_addr_test *test, - int32_t rc) -{ - struct bpf_insn insns[] = { - /* return rc */ - BPF_MOV64_IMM(BPF_REG_0, rc), - BPF_EXIT_INSN(), - }; - return load_insns(test, insns, ARRAY_SIZE(insns)); -} - -static int sendmsg_deny_prog_load(const struct sock_addr_test *test) -{ - return xmsg_ret_only_prog_load(test, /*rc*/ 0); -} - static int sendmsg4_rw_asm_prog_load(const struct sock_addr_test *test) { struct sockaddr_in dst4_rw_addr;