summaryrefslogtreecommitdiff
path: root/test/d4ae271dfaae-test.c
blob: b4c48fc81934cf34a5900c3974c34a0649cf27d9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
/* SPDX-License-Identifier: MIT */
/*
 * Test case for SQPOLL missing a 'ret' clear in case of busy.
 *
 * Heavily based on a test case from
 * Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
 */
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>

#include "helpers.h"
#include "liburing.h"

#define FILE_SIZE	(128 * 1024)

static int create_file(const char *file)
{
	ssize_t ret;
	char *buf;
	int fd;

	buf = io_uring_malloc(FILE_SIZE);
	memset(buf, 0xaa, FILE_SIZE);

	fd = open(file, O_WRONLY | O_CREAT, 0644);
	if (fd < 0) {
		perror("open file");
		return 1;
	}
	ret = write(fd, buf, FILE_SIZE);
	fsync(fd);
	close(fd);
	return ret != FILE_SIZE;
}

int main(int argc, char *argv[])
{
	struct io_uring ring;
	int i, fd, ret;
	struct io_uring_sqe *sqe;
	struct io_uring_cqe *cqe;
	struct iovec *iovecs;
	struct io_uring_params p;
	char *fname;
	void *buf;

	if (geteuid()) {
		fprintf(stdout, "Test requires root, skipping\n");
		return 0;
	}

	memset(&p, 0, sizeof(p));
	p.flags = IORING_SETUP_SQPOLL;
	ret = io_uring_queue_init_params(4, &ring, &p);
	if (ret < 0) {
		fprintf(stderr, "queue_init: %s\n", strerror(-ret));
		return 1;
	}

	if (argc > 1) {
		fname = argv[1];
	} else {
		fname = ".sqpoll.tmp";
		if (create_file(fname)) {
			fprintf(stderr, "file creation failed\n");
			goto out;
		}
	}

	fd = open(fname, O_RDONLY | O_DIRECT);
	if (fd < 0) {
		perror("open");
		goto out;
	}

	iovecs = calloc(10, sizeof(struct iovec));
	for (i = 0; i < 10; i++) {
		if (posix_memalign(&buf, 4096, 4096))
			goto out;
		iovecs[i].iov_base = buf;
		iovecs[i].iov_len = 4096;
	}

	ret = io_uring_register_files(&ring, &fd, 1);
	if (ret < 0) {
		fprintf(stderr, "register files %d\n", ret);
		goto out;
	}

	for (i = 0; i < 10; i++) {
		sqe = io_uring_get_sqe(&ring);
		if (!sqe)
			break;

		io_uring_prep_readv(sqe, 0, &iovecs[i], 1, 0);
		sqe->flags |= IOSQE_FIXED_FILE;

		ret = io_uring_submit(&ring);
		usleep(1000);
	}

	for (i = 0; i < 10; i++) {
		ret = io_uring_wait_cqe(&ring, &cqe);
		if (ret) {
			fprintf(stderr, "wait_cqe=%d\n", ret);
			break;
		}
		if (cqe->res != 4096) {
			fprintf(stderr, "ret=%d, wanted 4096\n", cqe->res);
			ret = 1;
			break;
		}
		io_uring_cqe_seen(&ring, cqe);
	}

	close(fd);
out:
	if (fname != argv[1])
		unlink(fname);
	io_uring_queue_exit(&ring);
	return ret;
}