[fio.git] / engines / binject.c

/*
 * binject engine
 *
 * IO engine that uses the Linux binject interface to directly inject
 * bio's to block devices.
 *
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include <string.h>
#include <sys/poll.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "../fio.h"

#ifdef FIO_HAVE_BINJECT

struct binject_data {
	struct b_user_cmd *cmds;
	struct io_u **events;
	struct pollfd *pfds;
	int *fd_flags;
};

struct binject_file {
	unsigned int bs;
	int minor;
	int fd;
};

static void binject_buc_init(struct binject_data *bd, struct io_u *io_u)
{
	struct b_user_cmd *buc = &io_u->buc;

	memset(buc, 0, sizeof(*buc));
	binject_buc_set_magic(buc);

	buc->buf = (unsigned long) io_u->xfer_buf;
	buc->len = io_u->xfer_buflen;
	buc->offset = io_u->offset;
	buc->usr_ptr = (unsigned long) io_u;

	buc->flags = B_FLAG_NOIDLE | B_FLAG_UNPLUG;
	assert(buc->buf);
}

static int pollin_events(struct pollfd *pfds, int fds)
{
	int i;

	for (i = 0; i < fds; i++)
		if (pfds[i].revents & POLLIN)
			return 1;

	return 0;
}

static unsigned int binject_read_commands(struct thread_data *td, void *p,
					  int left, int *err)
{
	struct binject_file *bf;
	struct fio_file *f;
	int i, ret, events;

one_more:
	events = 0;
	for_each_file(td, f, i) {
		bf = f->file_data;
		ret = read(bf->fd, p, left * sizeof(struct b_user_cmd));
		if (ret < 0) {
			if (errno == EAGAIN)
				continue;
			*err = -errno;
			td_verror(td, errno, "read");
			break;
		} else if (ret) {
			p += ret;
			events += ret / sizeof(struct b_user_cmd);
		}
	}

	if (*err || events)
		return events;

	usleep(1000);
	goto one_more;
}

static int fio_binject_getevents(struct thread_data *td, unsigned int min,
			      unsigned int max, struct timespec fio_unused *t)
{
	struct binject_data *bd = td->io_ops->data;
	int left = max, ret, r = 0, ev_index = 0;
	void *buf = bd->cmds;
	unsigned int i, events;
	struct fio_file *f;
	struct binject_file *bf;

	/*
	 * Fill in the file descriptors
	 */
	for_each_file(td, f, i) {
		bf = f->file_data;

		/*
		 * don't block for min events == 0
		 */
		if (!min) {
			bd->fd_flags[i] = fcntl(bf->fd, F_GETFL);
			fcntl(bf->fd, F_SETFL, bd->fd_flags[i] | O_NONBLOCK);
		}
		bd->pfds[i].fd = bf->fd;
		bd->pfds[i].events = POLLIN;
	}

	while (left) {
		while (!min) {
			ret = poll(bd->pfds, td->o.nr_files, -1);
			if (ret < 0) {
				if (!r)
					r = -errno;
				td_verror(td, errno, "poll");
				break;
			} else if (!ret)
				continue;

			if (pollin_events(bd->pfds, td->o.nr_files))
				break;
		}

		if (r < 0)
			break;

		events = binject_read_commands(td, buf, left, &r);

		if (r < 0)
			break;

		left -= events;
		r += events;

		for (i = 0; i < events; i++) {
			struct b_user_cmd *buc = (struct b_user_cmd *) buf + i;

			bd->events[ev_index] = (struct io_u *) buc->usr_ptr;
			ev_index++;
		}
	}

	if (!min) {
		for_each_file(td, f, i) {
			bf = f->file_data;
			fcntl(bf->fd, F_SETFL, bd->fd_flags[i]);
		}
	}

	if (r > 0)
		assert(ev_index == r);

	return r;
}

static int fio_binject_doio(struct thread_data *td, struct io_u *io_u)
{
	struct b_user_cmd *buc = &io_u->buc;
	struct binject_file *bf = io_u->file->file_data;
	int ret;

	ret = write(bf->fd, buc, sizeof(*buc));
	if (ret < 0)
		return ret;

	return FIO_Q_QUEUED;
}

static int fio_binject_prep(struct thread_data *td, struct io_u *io_u)
{
	struct binject_data *bd = td->io_ops->data;
	struct b_user_cmd *buc = &io_u->buc;
	struct binject_file *bf = io_u->file->file_data;

	if (io_u->xfer_buflen & (bf->bs - 1)) {
		log_err("read/write not sector aligned\n");
		return EINVAL;
	}

	if (io_u->ddir == DDIR_READ) {
		binject_buc_init(bd, io_u);
		buc->type = B_TYPE_READ;
	} else if (io_u->ddir == DDIR_WRITE) {
		binject_buc_init(bd, io_u);
		if (io_u->flags & IO_U_F_BARRIER)
			buc->type = B_TYPE_WRITEBARRIER;
		else
			buc->type = B_TYPE_WRITE;
	} else if (io_u->ddir == DDIR_TRIM) {
		binject_buc_init(bd, io_u);
		buc->type = B_TYPE_DISCARD;
	} else {
		assert(0);
	}

	return 0;
}

static int fio_binject_queue(struct thread_data *td, struct io_u *io_u)
{
	int ret;

	fio_ro_check(td, io_u);

	ret = fio_binject_doio(td, io_u);

	if (ret < 0)
		io_u->error = errno;

	if (io_u->error) {
		td_verror(td, io_u->error, "xfer");
		return FIO_Q_COMPLETED;
	}

	return ret;
}

static struct io_u *fio_binject_event(struct thread_data *td, int event)
{
	struct binject_data *bd = td->io_ops->data;

	return bd->events[event];
}

static void binject_unmap_dev(struct thread_data *td, struct binject_file *bf)
{
	struct b_ioctl_cmd bic;
	int fdb;

	if (bf->fd >= 0) {
		close(bf->fd);
		bf->fd = -1;
	}

	fdb = open("/dev/binject-ctl", O_RDWR);
	if (fdb < 0) {
		td_verror(td, errno, "open binject-ctl");
		return;
	}

	bic.minor = bf->minor;

	if (ioctl(fdb, 1, &bic) < 0) {
		td_verror(td, errno, "binject dev unmap");
		close(fdb);
		return;
	}

	close(fdb);
}

static int binject_map_dev(struct thread_data *td, struct binject_file *bf,
			   int fd)
{
	struct b_ioctl_cmd bic;
	char name[80];
	struct stat sb;
	int fdb, dev_there, loops;

	fdb = open("/dev/binject-ctl", O_RDWR);
	if (fdb < 0) {
		td_verror(td, errno, "binject ctl open");
		return 1;
	}

	bic.fd = fd;

	if (ioctl(fdb, 0, &bic) < 0) {
		td_verror(td, errno, "binject dev map");
		close(fdb);
		return 1;
	}

	bf->minor = bic.minor;

	sprintf(name, "/dev/binject%u", bf->minor);

	/*
	 * Wait for udev to create the node...
	 */
	dev_there = loops = 0;
	do {
		if (!stat(name, &sb)) {
			dev_there = 1;
			break;
		}

		usleep(10000);
	} while (++loops < 100);

	close(fdb);

	if (!dev_there) {
		log_err("fio: timed out waiting for binject dev\n");
		goto err_unmap;
	}

	bf->fd = open(name, O_RDWR);
	if (bf->fd < 0) {
		td_verror(td, errno, "binject dev open");
err_unmap:
		binject_unmap_dev(td, bf);
		return 1;
	}

	return 0;
}

static int fio_binject_close_file(struct thread_data *td, struct fio_file *f)
{
	struct binject_file *bf = f->file_data;

	if (bf) {
		binject_unmap_dev(td, bf);
		free(bf);
		f->file_data = NULL;
		return generic_close_file(td, f);
	}

	return 0;
}

static int fio_binject_open_file(struct thread_data *td, struct fio_file *f)
{
	struct binject_file *bf;
	unsigned int bs;
	int ret;

	ret = generic_open_file(td, f);
	if (ret)
		return 1;

	if (f->filetype != FIO_TYPE_BD) {
		log_err("fio: binject only works with block devices\n");
		goto err_close;
	}
	if (ioctl(f->fd, BLKSSZGET, &bs) < 0) {
		td_verror(td, errno, "BLKSSZGET");
		goto err_close;
	}

	bf = malloc(sizeof(*bf));
	bf->bs = bs;
	bf->minor = bf->fd = -1;
	f->file_data = bf;

	if (binject_map_dev(td, bf, f->fd)) {
err_close:
		ret = generic_close_file(td, f);
		return 1;
	}

	return 0;
}

static void fio_binject_cleanup(struct thread_data *td)
{
	struct binject_data *bd = td->io_ops->data;

	if (bd) {
		free(bd->events);
		free(bd->cmds);
		free(bd->fd_flags);
		free(bd->pfds);
		free(bd);
	}
}

static int fio_binject_init(struct thread_data *td)
{
	struct binject_data *bd;

	bd = malloc(sizeof(*bd));
	memset(bd, 0, sizeof(*bd));

	bd->cmds = malloc(td->o.iodepth * sizeof(struct b_user_cmd));
	memset(bd->cmds, 0, td->o.iodepth * sizeof(struct b_user_cmd));

	bd->events = malloc(td->o.iodepth * sizeof(struct io_u *));
	memset(bd->events, 0, td->o.iodepth * sizeof(struct io_u *));

	bd->pfds = malloc(sizeof(struct pollfd) * td->o.nr_files);
	memset(bd->pfds, 0, sizeof(struct pollfd) * td->o.nr_files);

	bd->fd_flags = malloc(sizeof(int) * td->o.nr_files);
	memset(bd->fd_flags, 0, sizeof(int) * td->o.nr_files);

	td->io_ops->data = bd;
	return 0;
}

static struct ioengine_ops ioengine = {
	.name		= "binject",
	.version	= FIO_IOOPS_VERSION,
	.init		= fio_binject_init,
	.prep		= fio_binject_prep,
	.queue		= fio_binject_queue,
	.getevents	= fio_binject_getevents,
	.event		= fio_binject_event,
	.cleanup	= fio_binject_cleanup,
	.open_file	= fio_binject_open_file,
	.close_file	= fio_binject_close_file,
	.get_file_size	= generic_get_file_size,
	.flags		= FIO_RAWIO | FIO_BARRIER,
};

#else /* FIO_HAVE_BINJECT */

/*
 * When we have a proper configure system in place, we simply wont build
 * and install this io engine. For now install a crippled version that
 * just complains and fails to load.
 */
static int fio_binject_init(struct thread_data fio_unused *td)
{
	log_err("fio: ioengine binject not available\n");
	return 1;
}

static struct ioengine_ops ioengine = {
	.name		= "binject",
	.version	= FIO_IOOPS_VERSION,
	.init		= fio_binject_init,
};

#endif

static void fio_init fio_binject_register(void)
{
	register_ioengine(&ioengine);
}

static void fio_exit fio_binject_unregister(void)
{
	unregister_ioengine(&ioengine);
}
Commit	Line	Data
79a43187 JA	1	/*
	2	* binject engine
	3	*
	4	* IO engine that uses the Linux binject interface to directly inject
	5	* bio's to block devices.
	6	*
	7	*/
	8	#include <stdio.h>
	9	#include <stdlib.h>
	10	#include <unistd.h>
	11	#include <errno.h>
	12	#include <assert.h>
	13	#include <string.h>
	14	#include <sys/poll.h>
83c107b7 JA	15	#include <sys/types.h>
83c107b7 JA	16	#include <sys/stat.h>
79a43187 JA	17
	18	#include "../fio.h"
	19
	20	#ifdef FIO_HAVE_BINJECT
	21
	22	struct binject_data {
	23	struct b_user_cmd *cmds;
	24	struct io_u **events;
	25	struct pollfd *pfds;
	26	int *fd_flags;
79a43187 JA	27	};
79a43187 JA	28
0e238572 JA	29	struct binject_file {
	30	unsigned int bs;
	31	int minor;
	32	int fd;
	33	};
	34
79a43187 JA	35	static void binject_buc_init(struct binject_data bd, struct io_u io_u)
	36	{
	37	struct b_user_cmd *buc = &io_u->buc;
	38
	39	memset(buc, 0, sizeof(*buc));
	40	binject_buc_set_magic(buc);
	41
	42	buc->buf = (unsigned long) io_u->xfer_buf;
	43	buc->len = io_u->xfer_buflen;
	44	buc->offset = io_u->offset;
	45	buc->usr_ptr = (unsigned long) io_u;
	46
	47	buc->flags = B_FLAG_NOIDLE \| B_FLAG_UNPLUG;
	48	assert(buc->buf);
	49	}
	50
	51	static int pollin_events(struct pollfd *pfds, int fds)
	52	{
	53	int i;
	54
	55	for (i = 0; i < fds; i++)
	56	if (pfds[i].revents & POLLIN)
	57	return 1;
	58
	59	return 0;
	60	}
	61
d01c404b JA	62	static unsigned int binject_read_commands(struct thread_data td, void p,
	63	int left, int *err)
	64	{
	65	struct binject_file *bf;
	66	struct fio_file *f;
	67	int i, ret, events;
	68
	69	one_more:
	70	events = 0;
	71	for_each_file(td, f, i) {
	72	bf = f->file_data;
	73	ret = read(bf->fd, p, left * sizeof(struct b_user_cmd));
	74	if (ret < 0) {
	75	if (errno == EAGAIN)
	76	continue;
	77	*err = -errno;
	78	td_verror(td, errno, "read");
	79	break;
	80	} else if (ret) {
	81	p += ret;
	82	events += ret / sizeof(struct b_user_cmd);
	83	}
	84	}
	85
	86	if (*err \|\| events)
	87	return events;
	88
	89	usleep(1000);
	90	goto one_more;
	91	}
	92
79a43187 JA	93	static int fio_binject_getevents(struct thread_data *td, unsigned int min,
	94	unsigned int max, struct timespec fio_unused *t)
	95	{
	96	struct binject_data *bd = td->io_ops->data;
	97	int left = max, ret, r = 0, ev_index = 0;
	98	void *buf = bd->cmds;
	99	unsigned int i, events;
	100	struct fio_file *f;
0e238572	101	struct binject_file *bf;
79a43187 JA	102
	103	/*
	104	* Fill in the file descriptors
	105	*/
	106	for_each_file(td, f, i) {
d01c404b	107	bf = f->file_data;
0e238572	108
79a43187 JA	109	/*
	110	* don't block for min events == 0
	111	*/
	112	if (!min) {
0e238572 JA	113	bd->fd_flags[i] = fcntl(bf->fd, F_GETFL);
0e238572 JA	114	fcntl(bf->fd, F_SETFL, bd->fd_flags[i] \| O_NONBLOCK);
79a43187	115	}
0e238572	116	bd->pfds[i].fd = bf->fd;
79a43187 JA	117	bd->pfds[i].events = POLLIN;
	118	}
	119
	120	while (left) {
d01c404b	121	while (!min) {
79a43187 JA	122	ret = poll(bd->pfds, td->o.nr_files, -1);
	123	if (ret < 0) {
	124	if (!r)
	125	r = -errno;
	126	td_verror(td, errno, "poll");
	127	break;
	128	} else if (!ret)
	129	continue;
	130
	131	if (pollin_events(bd->pfds, td->o.nr_files))
	132	break;
d01c404b	133	}
79a43187 JA	134
	135	if (r < 0)
	136	break;
	137
d01c404b	138	events = binject_read_commands(td, buf, left, &r);
79a43187 JA	139
	140	if (r < 0)
	141	break;
79a43187 JA	142
	143	left -= events;
	144	r += events;
	145
	146	for (i = 0; i < events; i++) {
	147	struct b_user_cmd buc = (struct b_user_cmd ) buf + i;
	148
	149	bd->events[ev_index] = (struct io_u *) buc->usr_ptr;
	150	ev_index++;
	151	}
	152	}
	153
	154	if (!min) {
0e238572	155	for_each_file(td, f, i) {
d01c404b	156	bf = f->file_data;
0e238572 JA	157	fcntl(bf->fd, F_SETFL, bd->fd_flags[i]);
0e238572 JA	158	}
79a43187 JA	159	}
	160
	161	if (r > 0)
	162	assert(ev_index == r);
	163
	164	return r;
	165	}
	166
	167	static int fio_binject_doio(struct thread_data td, struct io_u io_u)
	168	{
	169	struct b_user_cmd *buc = &io_u->buc;
d01c404b	170	struct binject_file *bf = io_u->file->file_data;
79a43187 JA	171	int ret;
79a43187 JA	172
0e238572	173	ret = write(bf->fd, buc, sizeof(*buc));
79a43187 JA	174	if (ret < 0)
	175	return ret;
	176
	177	return FIO_Q_QUEUED;
	178	}
	179
	180	static int fio_binject_prep(struct thread_data td, struct io_u io_u)
	181	{
	182	struct binject_data *bd = td->io_ops->data;
	183	struct b_user_cmd *buc = &io_u->buc;
d01c404b	184	struct binject_file *bf = io_u->file->file_data;
79a43187	185
0e238572	186	if (io_u->xfer_buflen & (bf->bs - 1)) {
79a43187 JA	187	log_err("read/write not sector aligned\n");
	188	return EINVAL;
	189	}
	190
	191	if (io_u->ddir == DDIR_READ) {
	192	binject_buc_init(bd, io_u);
	193	buc->type = B_TYPE_READ;
	194	} else if (io_u->ddir == DDIR_WRITE) {
	195	binject_buc_init(bd, io_u);
1ef2b6be JA	196	if (io_u->flags & IO_U_F_BARRIER)
	197	buc->type = B_TYPE_WRITEBARRIER;
	198	else
	199	buc->type = B_TYPE_WRITE;
79a43187 JA	200	} else if (io_u->ddir == DDIR_TRIM) {
	201	binject_buc_init(bd, io_u);
	202	buc->type = B_TYPE_DISCARD;
	203	} else {
	204	assert(0);
	205	}
	206
	207	return 0;
	208	}
	209
	210	static int fio_binject_queue(struct thread_data td, struct io_u io_u)
	211	{
	212	int ret;
	213
	214	fio_ro_check(td, io_u);
	215
	216	ret = fio_binject_doio(td, io_u);
	217
	218	if (ret < 0)
	219	io_u->error = errno;
	220
	221	if (io_u->error) {
	222	td_verror(td, io_u->error, "xfer");
	223	return FIO_Q_COMPLETED;
	224	}
	225
	226	return ret;
	227	}
	228
	229	static struct io_u fio_binject_event(struct thread_data td, int event)
	230	{
	231	struct binject_data *bd = td->io_ops->data;
	232
	233	return bd->events[event];
	234	}
	235
0e238572 JA	236	static void binject_unmap_dev(struct thread_data td, struct binject_file bf)
	237	{
	238	struct b_ioctl_cmd bic;
	239	int fdb;
	240
	241	if (bf->fd >= 0) {
	242	close(bf->fd);
	243	bf->fd = -1;
	244	}
	245
	246	fdb = open("/dev/binject-ctl", O_RDWR);
	247	if (fdb < 0) {
	248	td_verror(td, errno, "open binject-ctl");
	249	return;
	250	}
	251
	252	bic.minor = bf->minor;
	253
	254	if (ioctl(fdb, 1, &bic) < 0) {
	255	td_verror(td, errno, "binject dev unmap");
	256	close(fdb);
	257	return;
	258	}
	259
	260	close(fdb);
	261	}
	262
	263	static int binject_map_dev(struct thread_data td, struct binject_file bf,
	264	int fd)
	265	{
	266	struct b_ioctl_cmd bic;
	267	char name[80];
	268	struct stat sb;
	269	int fdb, dev_there, loops;
	270
	271	fdb = open("/dev/binject-ctl", O_RDWR);
	272	if (fdb < 0) {
	273	td_verror(td, errno, "binject ctl open");
	274	return 1;
	275	}
	276
	277	bic.fd = fd;
	278
	279	if (ioctl(fdb, 0, &bic) < 0) {
	280	td_verror(td, errno, "binject dev map");
	281	close(fdb);
	282	return 1;
	283	}
	284
	285	bf->minor = bic.minor;
	286
	287	sprintf(name, "/dev/binject%u", bf->minor);
	288
	289	/*
	290	* Wait for udev to create the node...
	291	*/
	292	dev_there = loops = 0;
	293	do {
	294	if (!stat(name, &sb)) {
	295	dev_there = 1;
	296	break;
	297	}
	298
	299	usleep(10000);
300	} while (++loops < 100);
301
302	close(fdb);
303
304	if (!dev_there) {
305	log_err("fio: timed out waiting for binject dev\n");
306	goto err_unmap;
307	}
308
309	bf->fd = open(name, O_RDWR);
310	if (bf->fd < 0) {
311	td_verror(td, errno, "binject dev open");
312	err_unmap:
313	binject_unmap_dev(td, bf);
314	return 1;
315	}
316
317	return 0;
318	}
319
320	static int fio_binject_close_file(struct thread_data td, struct fio_file f)
321	{
d01c404b	322	struct binject_file *bf = f->file_data;
0e238572 JA	323
	324	if (bf) {
	325	binject_unmap_dev(td, bf);
	326	free(bf);
d01c404b	327	f->file_data = NULL;
0e238572 JA	328	return generic_close_file(td, f);
	329	}
	330
	331	return 0;
	332	}
	333
4a435dac JA	334	static int fio_binject_open_file(struct thread_data td, struct fio_file f)
4a435dac JA	335	{
0e238572	336	struct binject_file *bf;
4a435dac JA	337	unsigned int bs;
	338	int ret;
	339
	340	ret = generic_open_file(td, f);
	341	if (ret)
	342	return 1;
	343
	344	if (f->filetype != FIO_TYPE_BD) {
	345	log_err("fio: binject only works with block devices\n");
0e238572	346	goto err_close;
4a435dac JA	347	}
	348	if (ioctl(f->fd, BLKSSZGET, &bs) < 0) {
	349	td_verror(td, errno, "BLKSSZGET");
0e238572 JA	350	goto err_close;
	351	}
	352
	353	bf = malloc(sizeof(*bf));
	354	bf->bs = bs;
	355	bf->minor = bf->fd = -1;
d01c404b	356	f->file_data = bf;
0e238572 JA	357
	358	if (binject_map_dev(td, bf, f->fd)) {
	359	err_close:
	360	ret = generic_close_file(td, f);
4a435dac JA	361	return 1;
	362	}
	363
4a435dac JA	364	return 0;
	365	}
	366
79a43187 JA	367	static void fio_binject_cleanup(struct thread_data *td)
	368	{
	369	struct binject_data *bd = td->io_ops->data;
	370
	371	if (bd) {
	372	free(bd->events);
	373	free(bd->cmds);
	374	free(bd->fd_flags);
	375	free(bd->pfds);
	376	free(bd);
	377	}
	378	}
	379
	380	static int fio_binject_init(struct thread_data *td)
	381	{
	382	struct binject_data *bd;
	383
	384	bd = malloc(sizeof(*bd));
	385	memset(bd, 0, sizeof(*bd));
	386
	387	bd->cmds = malloc(td->o.iodepth * sizeof(struct b_user_cmd));
	388	memset(bd->cmds, 0, td->o.iodepth * sizeof(struct b_user_cmd));
	389
	390	bd->events = malloc(td->o.iodepth * sizeof(struct io_u *));
	391	memset(bd->events, 0, td->o.iodepth * sizeof(struct io_u *));
	392
	393	bd->pfds = malloc(sizeof(struct pollfd) * td->o.nr_files);
	394	memset(bd->pfds, 0, sizeof(struct pollfd) * td->o.nr_files);
	395
	396	bd->fd_flags = malloc(sizeof(int) * td->o.nr_files);
	397	memset(bd->fd_flags, 0, sizeof(int) * td->o.nr_files);
	398
	399	td->io_ops->data = bd;
	400	return 0;
	401	}
	402
	403	static struct ioengine_ops ioengine = {
	404	.name = "binject",
	405	.version = FIO_IOOPS_VERSION,
	406	.init = fio_binject_init,
	407	.prep = fio_binject_prep,
	408	.queue = fio_binject_queue,
	409	.getevents = fio_binject_getevents,
	410	.event = fio_binject_event,
	411	.cleanup = fio_binject_cleanup,
4a435dac	412	.open_file = fio_binject_open_file,
0e238572	413	.close_file = fio_binject_close_file,
79a43187	414	.get_file_size = generic_get_file_size,
1ef2b6be	415	.flags = FIO_RAWIO \| FIO_BARRIER,
79a43187 JA	416	};
	417
	418	#else /* FIO_HAVE_BINJECT */
	419
	420	/*
	421	* When we have a proper configure system in place, we simply wont build
	422	* and install this io engine. For now install a crippled version that
	423	* just complains and fails to load.
	424	*/
	425	static int fio_binject_init(struct thread_data fio_unused *td)
	426	{
a3edaf76	427	log_err("fio: ioengine binject not available\n");
79a43187 JA	428	return 1;
	429	}
	430
	431	static struct ioengine_ops ioengine = {
	432	.name = "binject",
	433	.version = FIO_IOOPS_VERSION,
	434	.init = fio_binject_init,
	435	};
	436
	437	#endif
	438
	439	static void fio_init fio_binject_register(void)
	440	{
	441	register_ioengine(&ioengine);
	442	}
	443
	444	static void fio_exit fio_binject_unregister(void)
	445	{
	446	unregister_ioengine(&ioengine);
	447	}