[PATCH v3 4/9] selftests/bpf: Move sample generation code to ima_test_common()

Roberto Sassu
2022-03-02T11:15:31Z

Move sample generator code to ima_test_common() so that the new function
can be called by multiple LSM hooks.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
---
tools/testing/selftests/bpf/progs/ima.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/ima.c b/tools/testing/selftests/bpf/progs/ima.c
index 96060ff4ffc6..b5a0de50d1b4 100644
--- a/tools/testing/selftests/bpf/progs/ima.c
+++ b/tools/testing/selftests/bpf/progs/ima.c
@@ -18,8 +18,7 @@ struct {

char _license[] SEC("license") = "GPL";

-SEC("lsm.s/bprm_committed_creds")
-void BPF_PROG(ima, struct linux_binprm *bprm)
+static void ima_test_common(struct file *file)
{
u64 ima_hash = 0;
u64 *sample;
@@ -28,7 +27,7 @@ void BPF_PROG(ima, struct linux_binprm *bprm)

pid = bpf_get_current_pid_tgid() >> 32;
if (pid == monitored_pid) {
- ret = bpf_ima_inode_hash(bprm->file->f_inode, &ima_hash,
+ ret = bpf_ima_inode_hash(file->f_inode, &ima_hash,
sizeof(ima_hash));
if (ret < 0 || ima_hash == 0)
return;
@@ -43,3 +42,9 @@ void BPF_PROG(ima, struct linux_binprm *bprm)

return;
}
+
+SEC("lsm.s/bprm_committed_creds")
+void BPF_PROG(bprm_committed_creds, struct linux_binprm *bprm)
+{
+ ima_test_common(bprm->file);
+}
--
2.32.0