171 lines
3.2 KiB
C
171 lines
3.2 KiB
C
/*
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* Description: test if io_uring SQ poll kthread is stopped when the userspace
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* process ended with or without closing the io_uring fd
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*
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/poll.h>
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#include <sys/wait.h>
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#include <sys/epoll.h>
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#include "liburing.h"
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#define SQ_THREAD_IDLE 2000
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#define BUF_SIZE 128
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#define KTHREAD_NAME "io_uring-sq"
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enum {
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TEST_OK = 0,
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TEST_SKIPPED = 1,
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TEST_FAILED = 2,
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};
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static int do_test_sq_poll_kthread_stopped(bool do_exit)
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{
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int ret = 0, pipe1[2];
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struct io_uring_params param;
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struct io_uring ring;
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struct io_uring_sqe *sqe;
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struct io_uring_cqe *cqe;
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uint8_t buf[BUF_SIZE];
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struct iovec iov;
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if (geteuid()) {
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fprintf(stderr, "sqpoll requires root!\n");
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return TEST_SKIPPED;
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}
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if (pipe(pipe1) != 0) {
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perror("pipe");
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return TEST_FAILED;
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}
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memset(¶m, 0, sizeof(param));
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param.flags |= IORING_SETUP_SQPOLL;
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param.sq_thread_idle = SQ_THREAD_IDLE;
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ret = io_uring_queue_init_params(16, &ring, ¶m);
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if (ret) {
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fprintf(stderr, "ring setup failed\n");
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ret = TEST_FAILED;
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goto err_pipe;
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}
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ret = io_uring_register_files(&ring, &pipe1[1], 1);
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if (ret) {
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fprintf(stderr, "file reg failed: %d\n", ret);
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ret = TEST_FAILED;
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goto err_uring;
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}
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iov.iov_base = buf;
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iov.iov_len = BUF_SIZE;
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sqe = io_uring_get_sqe(&ring);
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if (!sqe) {
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fprintf(stderr, "io_uring_get_sqe failed\n");
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ret = TEST_FAILED;
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goto err_uring;
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}
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io_uring_prep_writev(sqe, 0, &iov, 1, 0);
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sqe->flags |= IOSQE_FIXED_FILE;
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ret = io_uring_submit(&ring);
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if (ret < 0) {
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fprintf(stderr, "io_uring_submit failed - ret: %d\n",
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ret);
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ret = TEST_FAILED;
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goto err_uring;
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}
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ret = io_uring_wait_cqe(&ring, &cqe);
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if (ret < 0) {
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fprintf(stderr, "io_uring_wait_cqe - ret: %d\n",
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ret);
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ret = TEST_FAILED;
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goto err_uring;
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}
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if (cqe->res != BUF_SIZE) {
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fprintf(stderr, "unexpected cqe->res %d [expected %d]\n",
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cqe->res, BUF_SIZE);
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ret = TEST_FAILED;
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goto err_uring;
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}
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io_uring_cqe_seen(&ring, cqe);
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ret = TEST_OK;
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err_uring:
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if (do_exit)
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io_uring_queue_exit(&ring);
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err_pipe:
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close(pipe1[0]);
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close(pipe1[1]);
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return ret;
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}
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int test_sq_poll_kthread_stopped(bool do_exit)
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{
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pid_t pid;
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int status = 0;
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pid = fork();
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if (pid == 0) {
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int ret = do_test_sq_poll_kthread_stopped(do_exit);
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exit(ret);
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}
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pid = wait(&status);
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if (status != 0)
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return WEXITSTATUS(status);
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sleep(1);
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if (system("ps --ppid 2 | grep " KTHREAD_NAME) == 0) {
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fprintf(stderr, "%s kthread still running!\n", KTHREAD_NAME);
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return TEST_FAILED;
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}
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int ret;
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if (argc > 1)
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return 0;
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ret = test_sq_poll_kthread_stopped(true);
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if (ret == TEST_SKIPPED) {
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printf("test_sq_poll_kthread_stopped_exit: skipped\n");
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} else if (ret == TEST_FAILED) {
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fprintf(stderr, "test_sq_poll_kthread_stopped_exit failed\n");
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return ret;
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}
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ret = test_sq_poll_kthread_stopped(false);
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if (ret == TEST_SKIPPED) {
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printf("test_sq_poll_kthread_stopped_noexit: skipped\n");
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} else if (ret == TEST_FAILED) {
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fprintf(stderr, "test_sq_poll_kthread_stopped_noexit failed\n");
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return ret;
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}
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return 0;
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}
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