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/*
* Description: test IORING_REGISTER_PROBE
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "liburing.h"
static int verify_probe(struct io_uring_probe *p, int full)
{
if (!full && p->ops_len) {
fprintf(stderr, "Got ops_len=%u\n", p->ops_len);
return 1;
}
if (!p->last_op) {
fprintf(stderr, "Got last_op=%u\n", p->last_op);
return 1;
}
if (!full)
return 0;
/* check a few ops that must be supported */
if (!(p->ops[IORING_OP_NOP].flags & IO_URING_OP_SUPPORTED)) {
fprintf(stderr, "NOP not supported!?\n");
return 1;
}
if (!(p->ops[IORING_OP_READV].flags & IO_URING_OP_SUPPORTED)) {
fprintf(stderr, "READV not supported!?\n");
return 1;
}
if (!(p->ops[IORING_OP_WRITE].flags & IO_URING_OP_SUPPORTED)) {
fprintf(stderr, "READV not supported!?\n");
return 1;
}
return 0;
}
static int test_probe(struct io_uring *ring)
{
struct io_uring_probe *p;
size_t len;
int ret;
len = sizeof(*p) + 256 * sizeof(struct io_uring_probe_op);
p = calloc(1, len);
ret = io_uring_register_probe(ring, p, 0);
if (ret == -EINVAL) {
fprintf(stdout, "Probe not supported, skipping\n");
goto out;
} else if (ret) {
fprintf(stdout, "Probe returned %d\n", ret);
goto err;
}
if (verify_probe(p, 0))
goto err;
/* now grab for all entries */
memset(p, 0, len);
ret = io_uring_register_probe(ring, p, 256);
if (ret == -EINVAL) {
fprintf(stdout, "Probe not supported, skipping\n");
goto err;
} else if (ret) {
fprintf(stdout, "Probe returned %d\n", ret);
goto err;
}
if (verify_probe(p, 1))
goto err;
out:
free(p);
return 0;
err:
free(p);
return 1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
ret = test_probe(&ring);
if (ret) {
fprintf(stderr, "test_probe failed\n");
return ret;
}
return 0;
}
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