[PATCH v2 06/22] selftests/coredump: add a separate helper header

[Christian Brauner <brauner@kernel.org>]

Right now we have coredump_test.h which pulls in the test harness.
So it can't be included in coredump_test_helpers.c and it hand-rolls a
bunch of stuff that is not needed.

Instead of this mess, split everything out into a separate
coredump_test_helpers.h header and make both coredump_test.h and
coredump_test_helpers.c include it.

Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
---
 tools/testing/selftests/coredump/coredump_test.h   | 30 +-----------------
 .../selftests/coredump/coredump_test_helpers.c     | 17 +---------
 .../selftests/coredump/coredump_test_helpers.h     | 37 ++++++++++++++++++++++
 3 files changed, 39 insertions(+), 45 deletions(-)

diff --git a/tools/testing/selftests/coredump/coredump_test.h b/tools/testing/selftests/coredump/coredump_test.h
index a02809145e2d..8d99b5cb2f12 100644
--- a/tools/testing/selftests/coredump/coredump_test.h
+++ b/tools/testing/selftests/coredump/coredump_test.h
@@ -3,18 +3,9 @@
 #ifndef __COREDUMP_TEST_H
 #define __COREDUMP_TEST_H
 
-#include <stdbool.h>
-#include <sys/types.h>
-#include <linux/coredump.h>
-
 #include "../kselftest_harness.h"
-#include "../pidfd/pidfd.h"
-
-#ifndef PAGE_SIZE
-#define PAGE_SIZE 4096
-#endif
 
-#define NUM_THREAD_SPAWN 128
+#include "coredump_test_helpers.h"
 
 /* Coredump fixture */
 FIXTURE(coredump)
@@ -24,15 +15,6 @@ FIXTURE(coredump)
 	int fd_tmpfs_detached;
 };
 
-/* Shared helper function declarations */
-void *do_nothing(void *arg);
-void crashing_child(void);
-int create_detached_tmpfs(void);
-int create_and_listen_unix_socket(const char *path);
-bool set_core_pattern(const char *pattern);
-int get_peer_pidfd(int fd);
-bool get_pidfd_info(int fd_peer_pidfd, struct pidfd_info *info);
-
 /* Inline helper that uses harness types */
 static inline void wait_and_check_coredump_server(pid_t pid_coredump_server,
 						   struct __test_metadata *const _metadata,
@@ -45,14 +27,4 @@ static inline void wait_and_check_coredump_server(pid_t pid_coredump_server,
 	ASSERT_EQ(WEXITSTATUS(status), 0);
 }
 
-/* Protocol helper function declarations */
-ssize_t recv_marker(int fd);
-bool read_marker(int fd, enum coredump_mark mark);
-bool read_coredump_req(int fd, struct coredump_req *req);
-bool send_coredump_ack(int fd, const struct coredump_req *req,
-		       __u64 mask, size_t size_ack);
-bool check_coredump_req(const struct coredump_req *req);
-int open_coredump_tmpfile(int fd_tmpfs_detached);
-void process_coredump_worker(int fd_coredump, int fd_peer_pidfd, int fd_core_file);
-
 #endif /* __COREDUMP_TEST_H */
diff --git a/tools/testing/selftests/coredump/coredump_test_helpers.c b/tools/testing/selftests/coredump/coredump_test_helpers.c
index 306711e1b24d..570fc2e005c2 100644
--- a/tools/testing/selftests/coredump/coredump_test_helpers.c
+++ b/tools/testing/selftests/coredump/coredump_test_helpers.c
@@ -20,23 +20,8 @@
 #include <unistd.h>
 
 #include "../filesystems/wrappers.h"
-#include "../pidfd/pidfd.h"
 
-/* Forward declarations to avoid including harness header */
-struct __test_metadata;
-
-/* Match the fixture definition from coredump_test.h */
-struct _fixture_coredump_data {
-	char original_core_pattern[256];
-	pid_t pid_coredump_server;
-	int fd_tmpfs_detached;
-};
-
-#ifndef PAGE_SIZE
-#define PAGE_SIZE 4096
-#endif
-
-#define NUM_THREAD_SPAWN 128
+#include "coredump_test_helpers.h"
 
 void *do_nothing(void *arg)
 {
diff --git a/tools/testing/selftests/coredump/coredump_test_helpers.h b/tools/testing/selftests/coredump/coredump_test_helpers.h
new file mode 100644
index 000000000000..45904bd177b8
--- /dev/null
+++ b/tools/testing/selftests/coredump/coredump_test_helpers.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __COREDUMP_TEST_HELPERS_H
+#define __COREDUMP_TEST_HELPERS_H
+
+#include <stdbool.h>
+#include <sys/types.h>
+#include <linux/coredump.h>
+
+#include "../pidfd/pidfd.h"
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE 4096
+#endif
+
+#define NUM_THREAD_SPAWN 128
+
+/* Shared helper function declarations */
+void *do_nothing(void *arg);
+void crashing_child(void);
+int create_detached_tmpfs(void);
+int create_and_listen_unix_socket(const char *path);
+bool set_core_pattern(const char *pattern);
+int get_peer_pidfd(int fd);
+bool get_pidfd_info(int fd_peer_pidfd, struct pidfd_info *info);
+
+/* Protocol helper function declarations */
+ssize_t recv_marker(int fd);
+bool read_marker(int fd, enum coredump_mark mark);
+bool read_coredump_req(int fd, struct coredump_req *req);
+bool send_coredump_ack(int fd, const struct coredump_req *req,
+		       __u64 mask, size_t size_ack);
+bool check_coredump_req(const struct coredump_req *req);
+int open_coredump_tmpfile(int fd_tmpfs_detached);
+void process_coredump_worker(int fd_coredump, int fd_peer_pidfd, int fd_core_file);
+
+#endif /* __COREDUMP_TEST_HELPERS_H */

-- 
2.53.0