coredump_test.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2
 3#ifndef __COREDUMP_TEST_H
 4#define __COREDUMP_TEST_H
 5
 6#include <stdbool.h>
 7#include <sys/types.h>
 8#include <linux/coredump.h>
 9
10#include "../kselftest_harness.h"
11#include "../pidfd/pidfd.h"
12
13#ifndef PAGE_SIZE
14#define PAGE_SIZE 4096
15#endif
16
17#define NUM_THREAD_SPAWN 128
18
19/* Coredump fixture */
20FIXTURE(coredump)
21{
22	char original_core_pattern[256];
23	pid_t pid_coredump_server;
24	int fd_tmpfs_detached;
25};
26
27/* Shared helper function declarations */
28void *do_nothing(void *arg);
29void crashing_child(void);
30int create_detached_tmpfs(void);
31int create_and_listen_unix_socket(const char *path);
32bool set_core_pattern(const char *pattern);
33int get_peer_pidfd(int fd);
34bool get_pidfd_info(int fd_peer_pidfd, struct pidfd_info *info);
35
36/* Inline helper that uses harness types */
37static inline void wait_and_check_coredump_server(pid_t pid_coredump_server,
38						   struct __test_metadata *const _metadata,
39						   FIXTURE_DATA(coredump) *self)
40{
41	int status;
42	waitpid(pid_coredump_server, &status, 0);
43	self->pid_coredump_server = -ESRCH;
44	ASSERT_TRUE(WIFEXITED(status));
45	ASSERT_EQ(WEXITSTATUS(status), 0);
46}
47
48/* Protocol helper function declarations */
49ssize_t recv_marker(int fd);
50bool read_marker(int fd, enum coredump_mark mark);
51bool read_coredump_req(int fd, struct coredump_req *req);
52bool send_coredump_ack(int fd, const struct coredump_req *req,
53		       __u64 mask, size_t size_ack);
54bool check_coredump_req(const struct coredump_req *req, size_t min_size,
55			__u64 required_mask);
56int open_coredump_tmpfile(int fd_tmpfs_detached);
57void process_coredump_worker(int fd_coredump, int fd_peer_pidfd, int fd_core_file);
58
59#endif /* __COREDUMP_TEST_H */