[PATCH v2] selftests/seccomp: Improve error logging in get_proc_stat()

[Sameeksha Sankpal]

Use TH_LOG to report failure when reading /proc/<pid>/stat in
get_proc_stat(), following kernel test framework conventions.

Previously, printf() was used which is discouraged.

Suggested-by: Kees Cook <k...@kernel.org>

Signed-off-by: Sameeksha Sankpal <sameekshasank...@gmail.com>
---
v1 -> v2:
- Used TH_LOG instead of printf for error logging
- Moved variable declaration to the top of the function
- Applied review suggestion by Kees Cook

 tools/testing/selftests/seccomp/seccomp_bpf.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c 
b/tools/testing/selftests/seccomp/seccomp_bpf.c
index d6a85d7b26da..0f12052ef1c7 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -4505,14 +4505,14 @@ static char get_proc_stat(struct __test_metadata 
*_metadata, pid_t pid)
        char proc_path[100] = {0};
        char status;
        char *line;
+       int rc;
 
        snprintf(proc_path, sizeof(proc_path), "/proc/%d/stat", pid);
        ASSERT_EQ(get_nth(_metadata, proc_path, 3, &line), 1);
-       int rc = get_nth(_metadata, proc_path, 3, &line);
-       if (rc != 1) {
-               printf("[ERROR] user_notification_fifo: failed to read stat for 
PID %d (rc=%d)\n", pid, rc);
-       }
-       ASSERT_EQ(rc, 1);
+       rc = get_nth(_metadata, proc_path, 3, &line);
+    ASSERT_EQ(rc, 1) {
+               TH_LOG("user_notification_fifo: failed to read stat for PID %d 
(rc=%d)", pid, rc);
+       }
        status = *line;
        free(line);
 
-- 
2.43.0