ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/tools/testing/selftests/pidfd/pidfd_wait.c b/marvell/linux/tools/testing/selftests/pidfd/pidfd_wait.c
new file mode 100644
index 0000000..7079f8e
--- /dev/null
+++ b/marvell/linux/tools/testing/selftests/pidfd/pidfd_wait.c
@@ -0,0 +1,271 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sched.h>
+#include <string.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "pidfd.h"
+#include "../kselftest.h"
+
+#define ptr_to_u64(ptr) ((__u64)((uintptr_t)(ptr)))
+
+static pid_t sys_clone3(struct clone_args *args)
+{
+ return syscall(__NR_clone3, args, sizeof(struct clone_args));
+}
+
+static int sys_waitid(int which, pid_t pid, siginfo_t *info, int options,
+ struct rusage *ru)
+{
+ return syscall(__NR_waitid, which, pid, info, options, ru);
+}
+
+static int test_pidfd_wait_simple(void)
+{
+ const char *test_name = "pidfd wait simple";
+ int pidfd = -1, status = 0;
+ pid_t parent_tid = -1;
+ struct clone_args args = {
+ .parent_tid = ptr_to_u64(&parent_tid),
+ .pidfd = ptr_to_u64(&pidfd),
+ .flags = CLONE_PIDFD | CLONE_PARENT_SETTID,
+ .exit_signal = SIGCHLD,
+ };
+ int ret;
+ pid_t pid;
+ siginfo_t info = {
+ .si_signo = 0,
+ };
+
+ pidfd = open("/proc/self", O_DIRECTORY | O_RDONLY | O_CLOEXEC);
+ if (pidfd < 0)
+ ksft_exit_fail_msg("%s test: failed to open /proc/self %s\n",
+ test_name, strerror(errno));
+
+ pid = sys_waitid(P_PIDFD, pidfd, &info, WEXITED, NULL);
+ if (pid == 0)
+ ksft_exit_fail_msg(
+ "%s test: succeeded to wait on invalid pidfd %s\n",
+ test_name, strerror(errno));
+ close(pidfd);
+ pidfd = -1;
+
+ pidfd = open("/dev/null", O_RDONLY | O_CLOEXEC);
+ if (pidfd == 0)
+ ksft_exit_fail_msg("%s test: failed to open /dev/null %s\n",
+ test_name, strerror(errno));
+
+ pid = sys_waitid(P_PIDFD, pidfd, &info, WEXITED, NULL);
+ if (pid == 0)
+ ksft_exit_fail_msg(
+ "%s test: succeeded to wait on invalid pidfd %s\n",
+ test_name, strerror(errno));
+ close(pidfd);
+ pidfd = -1;
+
+ pid = sys_clone3(&args);
+ if (pid < 0)
+ ksft_exit_fail_msg("%s test: failed to create new process %s\n",
+ test_name, strerror(errno));
+
+ if (pid == 0)
+ exit(EXIT_SUCCESS);
+
+ pid = sys_waitid(P_PIDFD, pidfd, &info, WEXITED, NULL);
+ if (pid < 0)
+ ksft_exit_fail_msg(
+ "%s test: failed to wait on process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+
+ if (!WIFEXITED(info.si_status) || WEXITSTATUS(info.si_status))
+ ksft_exit_fail_msg(
+ "%s test: unexpected status received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+ close(pidfd);
+
+ if (info.si_signo != SIGCHLD)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_signo value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_signo, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_code != CLD_EXITED)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_code value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_code, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_pid != parent_tid)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_pid value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_pid, parent_tid, pidfd,
+ strerror(errno));
+
+ ksft_test_result_pass("%s test: Passed\n", test_name);
+ return 0;
+}
+
+static int test_pidfd_wait_states(void)
+{
+ const char *test_name = "pidfd wait states";
+ int pidfd = -1, status = 0;
+ pid_t parent_tid = -1;
+ struct clone_args args = {
+ .parent_tid = ptr_to_u64(&parent_tid),
+ .pidfd = ptr_to_u64(&pidfd),
+ .flags = CLONE_PIDFD | CLONE_PARENT_SETTID,
+ .exit_signal = SIGCHLD,
+ };
+ int ret;
+ pid_t pid;
+ siginfo_t info = {
+ .si_signo = 0,
+ };
+
+ pid = sys_clone3(&args);
+ if (pid < 0)
+ ksft_exit_fail_msg("%s test: failed to create new process %s\n",
+ test_name, strerror(errno));
+
+ if (pid == 0) {
+ kill(getpid(), SIGSTOP);
+ kill(getpid(), SIGSTOP);
+ exit(EXIT_SUCCESS);
+ }
+
+ ret = sys_waitid(P_PIDFD, pidfd, &info, WSTOPPED, NULL);
+ if (ret < 0)
+ ksft_exit_fail_msg(
+ "%s test: failed to wait on WSTOPPED process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+
+ if (info.si_signo != SIGCHLD)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_signo value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_signo, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_code != CLD_STOPPED)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_code value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_code, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_pid != parent_tid)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_pid value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_pid, parent_tid, pidfd,
+ strerror(errno));
+
+ ret = sys_pidfd_send_signal(pidfd, SIGCONT, NULL, 0);
+ if (ret < 0)
+ ksft_exit_fail_msg(
+ "%s test: failed to send signal to process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+
+ ret = sys_waitid(P_PIDFD, pidfd, &info, WCONTINUED, NULL);
+ if (ret < 0)
+ ksft_exit_fail_msg(
+ "%s test: failed to wait WCONTINUED on process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+
+ if (info.si_signo != SIGCHLD)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_signo value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_signo, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_code != CLD_CONTINUED)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_code value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_code, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_pid != parent_tid)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_pid value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_pid, parent_tid, pidfd,
+ strerror(errno));
+
+ ret = sys_waitid(P_PIDFD, pidfd, &info, WUNTRACED, NULL);
+ if (ret < 0)
+ ksft_exit_fail_msg(
+ "%s test: failed to wait on WUNTRACED process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+
+ if (info.si_signo != SIGCHLD)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_signo value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_signo, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_code != CLD_STOPPED)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_code value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_code, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_pid != parent_tid)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_pid value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_pid, parent_tid, pidfd,
+ strerror(errno));
+
+ ret = sys_pidfd_send_signal(pidfd, SIGKILL, NULL, 0);
+ if (ret < 0)
+ ksft_exit_fail_msg(
+ "%s test: failed to send SIGKILL to process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+
+ ret = sys_waitid(P_PIDFD, pidfd, &info, WEXITED, NULL);
+ if (ret < 0)
+ ksft_exit_fail_msg(
+ "%s test: failed to wait on WEXITED process with pid %d and pidfd %d: %s\n",
+ test_name, parent_tid, pidfd, strerror(errno));
+
+ if (info.si_signo != SIGCHLD)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_signo value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_signo, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_code != CLD_KILLED)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_code value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_code, parent_tid, pidfd,
+ strerror(errno));
+
+ if (info.si_pid != parent_tid)
+ ksft_exit_fail_msg(
+ "%s test: unexpected si_pid value %d received after waiting on process with pid %d and pidfd %d: %s\n",
+ test_name, info.si_pid, parent_tid, pidfd,
+ strerror(errno));
+
+ close(pidfd);
+
+ ksft_test_result_pass("%s test: Passed\n", test_name);
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ ksft_print_header();
+ ksft_set_plan(2);
+
+ test_pidfd_wait_simple();
+ test_pidfd_wait_states();
+
+ return ksft_exit_pass();
+}