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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Description: test multishot read on stdin. Not that this REQUIRES input
* to be received on stdin, and hence if invoked with no
* arguments, or without the single argument being 'stdin',
* the test will just return SKIPPED. Can't be run from the
* standard test harness, as it's interactive.
*
* To run, do run "test/read-mshot-stdin.t stdin" and then input text on
* the console, followed by enter / line feed. If it works as it should,
* it'll output the received CQE data. If an error is detected, it'll
* abort with an error.
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "liburing.h"
#include "helpers.h"
#define BUF_SIZE 32
#define NR_BUFS 64
#define BUF_BGID 1
#define BR_MASK (NR_BUFS - 1)
static int test_stdin(void)
{
struct io_uring_buf_ring *br;
struct io_uring_params p = { };
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct io_uring ring;
int ret, i, last_bid;
char *buf, *ptr;
p.flags = IORING_SETUP_CQSIZE;
p.cq_entries = NR_BUFS;
ret = io_uring_queue_init_params(1, &ring, &p);
if (ret) {
if (ret == -EINVAL)
return T_EXIT_SKIP;
fprintf(stderr, "ring setup failed: %d\n", ret);
return T_EXIT_FAIL;
}
if (posix_memalign((void **) &buf, 4096, NR_BUFS * BUF_SIZE))
return T_EXIT_FAIL;
br = io_uring_setup_buf_ring(&ring, NR_BUFS, BUF_BGID, 0, &ret);
if (!br) {
if (ret == -EINVAL)
return T_EXIT_SKIP;
fprintf(stderr, "Buffer ring register failed %d\n", ret);
return T_EXIT_FAIL;
}
ptr = buf;
for (i = 0; i < NR_BUFS; i++) {
io_uring_buf_ring_add(br, ptr, BUF_SIZE, i + 1, BR_MASK, i);
ptr += BUF_SIZE;
}
io_uring_buf_ring_advance(br, NR_BUFS);
sqe = io_uring_get_sqe(&ring);
io_uring_prep_read_multishot(sqe, STDIN_FILENO, 0, 0, BUF_BGID);
ret = io_uring_submit(&ring);
if (ret != 1) {
fprintf(stderr, "submit: %d\n", ret);
return T_EXIT_FAIL;
}
last_bid = -1;
do {
int bid;
ret = io_uring_wait_cqe(&ring, &cqe);
if (ret) {
fprintf(stderr, "wait cqe failed %d\n", ret);
return T_EXIT_FAIL;
}
if (cqe->res && !(cqe->flags & IORING_CQE_F_BUFFER)) {
fprintf(stderr, "BUF flag not set %x\n", cqe->flags);
return T_EXIT_FAIL;
}
bid = cqe->flags >> 16;
printf("CQE res %d, bid %d, flags %x\n", cqe->res, bid, cqe->flags);
if (cqe->res > 0 && last_bid != -1 && last_bid + 1 != bid) {
fprintf(stderr, "Got bid %d, wanted %d\n", bid, last_bid + 1);
return T_EXIT_FAIL;
}
if (!(cqe->flags & IORING_CQE_F_MORE)) {
io_uring_cqe_seen(&ring, cqe);
break;
}
last_bid = bid;
io_uring_cqe_seen(&ring, cqe);
}while (1);
io_uring_free_buf_ring(&ring, br, NR_BUFS, BUF_BGID);
io_uring_queue_exit(&ring);
free(buf);
return T_EXIT_PASS;
}
int main(int argc, char *argv[])
{
if (argc == 1)
return T_EXIT_SKIP;
else if (argc > 2)
return T_EXIT_SKIP;
if (!strcmp(argv[1], "stdin"))
return test_stdin();
return T_EXIT_SKIP;
}
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