[fio.git] / ioengines.c

/*
 * The io parts of the fio tool, includes workers for sync and mmap'ed
 * io, as well as both posix and linux libaio support.
 *
 * sync io is implemented on top of aio.
 *
 * This is not really specific to fio, if the get_io_u/put_io_u and
 * structures was pulled into this as well it would be a perfectly
 * generic io engine that could be used for other projects.
 *
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <dlfcn.h>
#include <assert.h>

#include "fio.h"
#include "diskutil.h"

static FLIST_HEAD(engine_list);

static int check_engine_ops(struct ioengine_ops *ops)
{
	if (ops->version != FIO_IOOPS_VERSION) {
		log_err("bad ioops version %d (want %d)\n", ops->version,
							FIO_IOOPS_VERSION);
		return 1;
	}

	if (!ops->queue) {
		log_err("%s: no queue handler\n", ops->name);
		return 1;
	}

	/*
	 * sync engines only need a ->queue()
	 */
	if (ops->flags & FIO_SYNCIO)
		return 0;

	if (!ops->event) {
		log_err("%s: no event handler\n", ops->name);
		return 1;
	}
	if (!ops->getevents) {
		log_err("%s: no getevents handler\n", ops->name);
		return 1;
	}
	if (!ops->queue) {
		log_err("%s: no queue handler\n", ops->name);
		return 1;
	}

	return 0;
}

void unregister_ioengine(struct ioengine_ops *ops)
{
	dprint(FD_IO, "ioengine %s unregistered\n", ops->name);
	flist_del(&ops->list);
	INIT_FLIST_HEAD(&ops->list);
}

void register_ioengine(struct ioengine_ops *ops)
{
	dprint(FD_IO, "ioengine %s registered\n", ops->name);
	INIT_FLIST_HEAD(&ops->list);
	flist_add_tail(&ops->list, &engine_list);
}

static struct ioengine_ops *find_ioengine(const char *name)
{
	struct ioengine_ops *ops;
	struct flist_head *entry;

	flist_for_each(entry, &engine_list) {
		ops = flist_entry(entry, struct ioengine_ops, list);
		if (!strcmp(name, ops->name))
			return ops;
	}

	return NULL;
}

static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
					    const char *engine_lib)
{
	struct ioengine_ops *ops;
	void *dlhandle;

	dprint(FD_IO, "dload engine %s\n", engine_lib);

	dlerror();
	dlhandle = dlopen(engine_lib, RTLD_LAZY);
	if (!dlhandle) {
		td_vmsg(td, -1, dlerror(), "dlopen");
		return NULL;
	}

	/*
	 * Unlike the included modules, external engines should have a
	 * non-static ioengine structure that we can reference.
	 */
	ops = dlsym(dlhandle, "ioengine");
	if (!ops) {
		td_vmsg(td, -1, dlerror(), "dlsym");
		dlclose(dlhandle);
		return NULL;
	}

	ops->dlhandle = dlhandle;
	return ops;
}

struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name)
{
	struct ioengine_ops *ops, *ret;
	char engine[16];

	dprint(FD_IO, "load ioengine %s\n", name);

	strncpy(engine, name, sizeof(engine) - 1);

	/*
	 * linux libaio has alias names, so convert to what we want
	 */
	if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3))
		strcpy(engine, "libaio");

	ops = find_ioengine(engine);
	if (!ops)
		ops = dlopen_ioengine(td, name);

	if (!ops) {
		log_err("fio: engine %s not loadable\n", name);
		return NULL;
	}

	/*
	 * Check that the required methods are there.
	 */
	if (check_engine_ops(ops))
		return NULL;

	ret = malloc(sizeof(*ret));
	memcpy(ret, ops, sizeof(*ret));
	ret->data = NULL;

	return ret;
}

void close_ioengine(struct thread_data *td)
{
	dprint(FD_IO, "close ioengine %s\n", td->io_ops->name);

	if (td->io_ops->cleanup) {
		td->io_ops->cleanup(td);
		td->io_ops->data = NULL;
	}

	if (td->io_ops->dlhandle)
		dlclose(td->io_ops->dlhandle);

	free(td->io_ops);
	td->io_ops = NULL;
}

int td_io_prep(struct thread_data *td, struct io_u *io_u)
{
	dprint_io_u(io_u, "prep");
	fio_ro_check(td, io_u);

	lock_file(td, io_u->file, io_u->ddir);

	if (td->io_ops->prep) {
		int ret = td->io_ops->prep(td, io_u);

		dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret);
		if (ret)
			unlock_file(td, io_u->file);
		return ret;
	}

	return 0;
}

int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max,
		    struct timespec *t)
{
	int r = 0;

	if (min > 0 && td->io_ops->commit) {
		r = td->io_ops->commit(td);
		if (r < 0)
			goto out;
	}
	if (max > td->cur_depth)
		max = td->cur_depth;
	if (min > max)
		max = min;

	r = 0;
	if (max && td->io_ops->getevents)
		r = td->io_ops->getevents(td, min, max, t);
out:
	if (r >= 0)
		io_u_mark_complete(td, r);
	else
		td_verror(td, r, "get_events");

	dprint(FD_IO, "getevents: %d\n", r);
	return r;
}

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

	dprint_io_u(io_u, "queue");
	fio_ro_check(td, io_u);

	assert((io_u->flags & IO_U_F_FLIGHT) == 0);
	io_u->flags |= IO_U_F_FLIGHT;

	assert(fio_file_open(io_u->file));

	io_u->error = 0;
	io_u->resid = 0;

	if (td->io_ops->flags & FIO_SYNCIO) {
		if (fio_fill_issue_time(td))
			fio_gettime(&io_u->issue_time, NULL);

		/*
		 * only used for iolog
		 */
		if (td->o.read_iolog_file)
			memcpy(&td->last_issue, &io_u->issue_time,
					sizeof(struct timeval));
	}

	if (ddir_rw(io_u->ddir))
		td->io_issues[io_u->ddir]++;

	ret = td->io_ops->queue(td, io_u);

	unlock_file(td, io_u->file);

	/*
	 * Add warning for O_DIRECT so that users have an easier time
	 * spotting potentially bad alignment. If this triggers for the first
	 * IO, then it's likely an alignment problem or because the host fs
	 * does not support O_DIRECT
	 */
	if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 &&
	    td->o.odirect) {
		log_info("fio: first direct IO errored. File system may not "
			 "support direct IO, or iomem_align= is bad.\n");
	}

	if (!td->io_ops->commit) {
		io_u_mark_submit(td, 1);
		io_u_mark_complete(td, 1);
	}

	if (ret == FIO_Q_COMPLETED) {
		if (ddir_rw(io_u->ddir)) {
			io_u_mark_depth(td, 1);
			td->ts.total_io_u[io_u->ddir]++;
		} else if (io_u->ddir == DDIR_TRIM)
			td->ts.total_io_u[2]++;
	} else if (ret == FIO_Q_QUEUED) {
		int r;

		if (ddir_rw(io_u->ddir)) {
			td->io_u_queued++;
			td->ts.total_io_u[io_u->ddir]++;
		}

		if (td->io_u_queued >= td->o.iodepth_batch) {
			r = td_io_commit(td);
			if (r < 0)
				return r;
		}
	}

	if ((td->io_ops->flags & FIO_SYNCIO) == 0) {
		if (fio_fill_issue_time(td))
			fio_gettime(&io_u->issue_time, NULL);

		/*
		 * only used for iolog
		 */
		if (td->o.read_iolog_file)
			memcpy(&td->last_issue, &io_u->issue_time,
					sizeof(struct timeval));
	}

	return ret;
}

int td_io_init(struct thread_data *td)
{
	int ret = 0;

	if (td->io_ops->init) {
		ret = td->io_ops->init(td);
		if (ret && td->o.iodepth > 1) {
			log_err("fio: io engine init failed. Perhaps try"
				" reducing io depth?\n");
		}
	}

	return ret;
}

int td_io_commit(struct thread_data *td)
{
	int ret;

	dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth);

	if (!td->cur_depth || !td->io_u_queued)
		return 0;

	io_u_mark_depth(td, td->io_u_queued);
	td->io_u_queued = 0;

	if (td->io_ops->commit) {
		ret = td->io_ops->commit(td);
		if (ret)
			td_verror(td, -ret, "io commit");
	}

	return 0;
}

int td_io_open_file(struct thread_data *td, struct fio_file *f)
{
	assert(!fio_file_open(f));
	assert(f->fd == -1);

	if (td->io_ops->open_file(td, f)) {
		if (td->error == EINVAL && td->o.odirect)
			log_err("fio: destination does not support O_DIRECT\n");
		if (td->error == EMFILE) {
			log_err("fio: try reducing/setting openfiles (failed"
				" at %u of %u)\n", td->nr_open_files,
							td->o.nr_files);
		}

		assert(f->fd == -1);
		assert(!fio_file_open(f));
		return 1;
	}

	fio_file_reset(f);
	fio_file_set_open(f);
	fio_file_clear_closing(f);
	disk_util_inc(f->du);

	td->nr_open_files++;
	get_file(f);

	if (f->filetype == FIO_TYPE_PIPE) {
		if (td_random(td)) {
			log_err("fio: can't seek on pipes (no random io)\n");
			goto err;
		}
	}

	if (td->io_ops->flags & FIO_DISKLESSIO)
		goto done;

	if (td->o.invalidate_cache && file_invalidate_cache(td, f))
		goto err;

	if (td->o.fadvise_hint &&
	    (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) {
		int flags;

		if (td_random(td))
			flags = POSIX_FADV_RANDOM;
		else
			flags = POSIX_FADV_SEQUENTIAL;

		if (fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) {
			td_verror(td, errno, "fadvise");
			goto err;
		}
	}

#ifdef FIO_OS_DIRECTIO
	/*
	 * Some OS's have a distinct call to mark the file non-buffered,
	 * instead of using O_DIRECT (Solaris)
	 */
	if (td->o.odirect) {
		int ret = fio_set_odirect(f->fd);

		if (ret) {
			td_verror(td, ret, "fio_set_odirect");
			goto err;
		}
	}
#endif

done:
	log_file(td, f, FIO_LOG_OPEN_FILE);
	return 0;
err:
	disk_util_dec(f->du);
	if (td->io_ops->close_file)
		td->io_ops->close_file(td, f);
	return 1;
}

int td_io_close_file(struct thread_data *td, struct fio_file *f)
{
	if (!fio_file_closing(f))
		log_file(td, f, FIO_LOG_CLOSE_FILE);

	/*
	 * mark as closing, do real close when last io on it has completed
	 */
	fio_file_set_closing(f);

	disk_util_dec(f->du);
	unlock_file_all(td, f);

	return put_file(td, f);
}

int td_io_get_file_size(struct thread_data *td, struct fio_file *f)
{
	if (!td->io_ops->get_file_size)
		return 0;

	return td->io_ops->get_file_size(td, f);
}

static int do_sync_file_range(struct thread_data *td, struct fio_file *f)
{
	off64_t offset, nbytes;

	offset = f->first_write;
	nbytes = f->last_write - f->first_write;

	if (!nbytes)
		return 0;

	return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range);
}

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

	if (io_u->ddir == DDIR_SYNC) {
		ret = fsync(io_u->file->fd);
	} else if (io_u->ddir == DDIR_DATASYNC) {
#ifdef FIO_HAVE_FDATASYNC
		ret = fdatasync(io_u->file->fd);
#else
		ret = io_u->xfer_buflen;
		io_u->error = EINVAL;
#endif
	} else if (io_u->ddir == DDIR_SYNC_FILE_RANGE)
		ret = do_sync_file_range(td, io_u->file);
	else {
		ret = io_u->xfer_buflen;
		io_u->error = EINVAL;
	}

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

	return ret;
}

int do_io_u_trim(struct thread_data *td, struct io_u *io_u)
{
#ifndef FIO_HAVE_TRIM
	io_u->error = EINVAL;
	return 0;
#else
	struct fio_file *f = io_u->file;
	int ret;

	ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen);
	if (!ret)
		return io_u->xfer_buflen;;

	io_u->error = ret;
	return 0;
#endif
}
Commit	Line	Data
	1	/*
	2	* The io parts of the fio tool, includes workers for sync and mmap'ed
	3	* io, as well as both posix and linux libaio support.
	4	*
	5	* sync io is implemented on top of aio.
	6	*
	7	* This is not really specific to fio, if the get_io_u/put_io_u and
	8	* structures was pulled into this as well it would be a perfectly
	9	* generic io engine that could be used for other projects.
	10	*
	11	*/
	12	#include <stdio.h>
	13	#include <stdlib.h>
	14	#include <unistd.h>
	15	#include <string.h>
	16	#include <dlfcn.h>
	17	#include <assert.h>
	18
	19	#include "fio.h"
	20	#include "diskutil.h"
	21
	22	static FLIST_HEAD(engine_list);
	23
	24	static int check_engine_ops(struct ioengine_ops *ops)
	25	{
	26	if (ops->version != FIO_IOOPS_VERSION) {
	27	log_err("bad ioops version %d (want %d)\n", ops->version,
	28	FIO_IOOPS_VERSION);
	29	return 1;
	30	}
	31
	32	if (!ops->queue) {
	33	log_err("%s: no queue handler\n", ops->name);
	34	return 1;
	35	}
	36
	37	/*
	38	* sync engines only need a ->queue()
	39	*/
	40	if (ops->flags & FIO_SYNCIO)
	41	return 0;
	42
	43	if (!ops->event) {
	44	log_err("%s: no event handler\n", ops->name);
	45	return 1;
	46	}
	47	if (!ops->getevents) {
	48	log_err("%s: no getevents handler\n", ops->name);
	49	return 1;
	50	}
	51	if (!ops->queue) {
	52	log_err("%s: no queue handler\n", ops->name);
	53	return 1;
	54	}
	55
	56	return 0;
	57	}
	58
	59	void unregister_ioengine(struct ioengine_ops *ops)
	60	{
	61	dprint(FD_IO, "ioengine %s unregistered\n", ops->name);
	62	flist_del(&ops->list);
	63	INIT_FLIST_HEAD(&ops->list);
	64	}
	65
	66	void register_ioengine(struct ioengine_ops *ops)
	67	{
	68	dprint(FD_IO, "ioengine %s registered\n", ops->name);
	69	INIT_FLIST_HEAD(&ops->list);
	70	flist_add_tail(&ops->list, &engine_list);
	71	}
	72
	73	static struct ioengine_ops find_ioengine(const char name)
	74	{
	75	struct ioengine_ops *ops;
	76	struct flist_head *entry;
	77
	78	flist_for_each(entry, &engine_list) {
	79	ops = flist_entry(entry, struct ioengine_ops, list);
	80	if (!strcmp(name, ops->name))
	81	return ops;
	82	}
	83
	84	return NULL;
	85	}
	86
	87	static struct ioengine_ops dlopen_ioengine(struct thread_data td,
	88	const char *engine_lib)
	89	{
	90	struct ioengine_ops *ops;
	91	void *dlhandle;
	92
	93	dprint(FD_IO, "dload engine %s\n", engine_lib);
	94
	95	dlerror();
	96	dlhandle = dlopen(engine_lib, RTLD_LAZY);
	97	if (!dlhandle) {
	98	td_vmsg(td, -1, dlerror(), "dlopen");
	99	return NULL;
	100	}
	101
	102	/*
	103	* Unlike the included modules, external engines should have a
	104	* non-static ioengine structure that we can reference.
	105	*/
	106	ops = dlsym(dlhandle, "ioengine");
	107	if (!ops) {
	108	td_vmsg(td, -1, dlerror(), "dlsym");
	109	dlclose(dlhandle);
	110	return NULL;
	111	}
	112
	113	ops->dlhandle = dlhandle;
	114	return ops;
	115	}
	116
	117	struct ioengine_ops load_ioengine(struct thread_data td, const char *name)
	118	{
	119	struct ioengine_ops ops, ret;
	120	char engine[16];
	121
	122	dprint(FD_IO, "load ioengine %s\n", name);
	123
	124	strncpy(engine, name, sizeof(engine) - 1);
	125
	126	/*
	127	* linux libaio has alias names, so convert to what we want
	128	*/
	129	if (!strncmp(engine, "linuxaio", 8) \|\| !strncmp(engine, "aio", 3))
	130	strcpy(engine, "libaio");
	131
	132	ops = find_ioengine(engine);
	133	if (!ops)
	134	ops = dlopen_ioengine(td, name);
	135
	136	if (!ops) {
	137	log_err("fio: engine %s not loadable\n", name);
	138	return NULL;
	139	}
	140
	141	/*
	142	* Check that the required methods are there.
	143	*/
	144	if (check_engine_ops(ops))
	145	return NULL;
	146
	147	ret = malloc(sizeof(*ret));
	148	memcpy(ret, ops, sizeof(*ret));
	149	ret->data = NULL;
	150
	151	return ret;
	152	}
	153
	154	void close_ioengine(struct thread_data *td)
	155	{
	156	dprint(FD_IO, "close ioengine %s\n", td->io_ops->name);
	157
	158	if (td->io_ops->cleanup) {
	159	td->io_ops->cleanup(td);
	160	td->io_ops->data = NULL;
	161	}
	162
	163	if (td->io_ops->dlhandle)
	164	dlclose(td->io_ops->dlhandle);
	165
	166	free(td->io_ops);
	167	td->io_ops = NULL;
	168	}
	169
	170	int td_io_prep(struct thread_data td, struct io_u io_u)
	171	{
	172	dprint_io_u(io_u, "prep");
	173	fio_ro_check(td, io_u);
	174
	175	lock_file(td, io_u->file, io_u->ddir);
	176
	177	if (td->io_ops->prep) {
	178	int ret = td->io_ops->prep(td, io_u);
	179
	180	dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret);
	181	if (ret)
	182	unlock_file(td, io_u->file);
	183	return ret;
	184	}
	185
	186	return 0;
	187	}
	188
	189	int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max,
	190	struct timespec *t)
	191	{
	192	int r = 0;
	193
	194	if (min > 0 && td->io_ops->commit) {
	195	r = td->io_ops->commit(td);
	196	if (r < 0)
	197	goto out;
	198	}
	199	if (max > td->cur_depth)
	200	max = td->cur_depth;
	201	if (min > max)
	202	max = min;
	203
	204	r = 0;
	205	if (max && td->io_ops->getevents)
	206	r = td->io_ops->getevents(td, min, max, t);
	207	out:
	208	if (r >= 0)
	209	io_u_mark_complete(td, r);
	210	else
	211	td_verror(td, r, "get_events");
	212
	213	dprint(FD_IO, "getevents: %d\n", r);
	214	return r;
	215	}
	216
	217	int td_io_queue(struct thread_data td, struct io_u io_u)
	218	{
	219	int ret;
	220
	221	dprint_io_u(io_u, "queue");
	222	fio_ro_check(td, io_u);
	223
	224	assert((io_u->flags & IO_U_F_FLIGHT) == 0);
	225	io_u->flags \|= IO_U_F_FLIGHT;
	226
	227	assert(fio_file_open(io_u->file));
	228
	229	io_u->error = 0;
	230	io_u->resid = 0;
	231
	232	if (td->io_ops->flags & FIO_SYNCIO) {
	233	if (fio_fill_issue_time(td))
	234	fio_gettime(&io_u->issue_time, NULL);
	235
	236	/*
	237	* only used for iolog
	238	*/
	239	if (td->o.read_iolog_file)
	240	memcpy(&td->last_issue, &io_u->issue_time,
	241	sizeof(struct timeval));
	242	}
	243
	244	if (ddir_rw(io_u->ddir))
	245	td->io_issues[io_u->ddir]++;
	246
	247	ret = td->io_ops->queue(td, io_u);
	248
	249	unlock_file(td, io_u->file);
	250
	251	/*
	252	* Add warning for O_DIRECT so that users have an easier time
	253	* spotting potentially bad alignment. If this triggers for the first
	254	* IO, then it's likely an alignment problem or because the host fs
	255	* does not support O_DIRECT
	256	*/
	257	if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 &&
	258	td->o.odirect) {
	259	log_info("fio: first direct IO errored. File system may not "
	260	"support direct IO, or iomem_align= is bad.\n");
	261	}
	262
	263	if (!td->io_ops->commit) {
	264	io_u_mark_submit(td, 1);
	265	io_u_mark_complete(td, 1);
	266	}
	267
	268	if (ret == FIO_Q_COMPLETED) {
	269	if (ddir_rw(io_u->ddir)) {
	270	io_u_mark_depth(td, 1);
	271	td->ts.total_io_u[io_u->ddir]++;
	272	} else if (io_u->ddir == DDIR_TRIM)
	273	td->ts.total_io_u[2]++;
	274	} else if (ret == FIO_Q_QUEUED) {
	275	int r;
	276
	277	if (ddir_rw(io_u->ddir)) {
	278	td->io_u_queued++;
	279	td->ts.total_io_u[io_u->ddir]++;
	280	}
	281
	282	if (td->io_u_queued >= td->o.iodepth_batch) {
	283	r = td_io_commit(td);
	284	if (r < 0)
	285	return r;
	286	}
	287	}
	288
	289	if ((td->io_ops->flags & FIO_SYNCIO) == 0) {
	290	if (fio_fill_issue_time(td))
	291	fio_gettime(&io_u->issue_time, NULL);
	292
	293	/*
	294	* only used for iolog
	295	*/
	296	if (td->o.read_iolog_file)
	297	memcpy(&td->last_issue, &io_u->issue_time,
	298	sizeof(struct timeval));
	299	}
	300
	301	return ret;
	302	}
	303
	304	int td_io_init(struct thread_data *td)
	305	{
	306	int ret = 0;
	307
	308	if (td->io_ops->init) {
	309	ret = td->io_ops->init(td);
	310	if (ret && td->o.iodepth > 1) {
	311	log_err("fio: io engine init failed. Perhaps try"
	312	" reducing io depth?\n");
	313	}
	314	}
	315
	316	return ret;
	317	}
	318
	319	int td_io_commit(struct thread_data *td)
	320	{
	321	int ret;
	322
	323	dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth);
	324
	325	if (!td->cur_depth \|\| !td->io_u_queued)
	326	return 0;
	327
	328	io_u_mark_depth(td, td->io_u_queued);
	329	td->io_u_queued = 0;
	330
	331	if (td->io_ops->commit) {
	332	ret = td->io_ops->commit(td);
	333	if (ret)
	334	td_verror(td, -ret, "io commit");
	335	}
	336
	337	return 0;
	338	}
	339
	340	int td_io_open_file(struct thread_data td, struct fio_file f)
	341	{
	342	assert(!fio_file_open(f));
	343	assert(f->fd == -1);
	344
	345	if (td->io_ops->open_file(td, f)) {
	346	if (td->error == EINVAL && td->o.odirect)
	347	log_err("fio: destination does not support O_DIRECT\n");
	348	if (td->error == EMFILE) {
	349	log_err("fio: try reducing/setting openfiles (failed"
	350	" at %u of %u)\n", td->nr_open_files,
	351	td->o.nr_files);
	352	}
	353
	354	assert(f->fd == -1);
	355	assert(!fio_file_open(f));
	356	return 1;
	357	}
	358
	359	fio_file_reset(f);
	360	fio_file_set_open(f);
	361	fio_file_clear_closing(f);
	362	disk_util_inc(f->du);
	363
	364	td->nr_open_files++;
	365	get_file(f);
	366
	367	if (f->filetype == FIO_TYPE_PIPE) {
	368	if (td_random(td)) {
	369	log_err("fio: can't seek on pipes (no random io)\n");
	370	goto err;
	371	}
	372	}
	373
	374	if (td->io_ops->flags & FIO_DISKLESSIO)
	375	goto done;
	376
	377	if (td->o.invalidate_cache && file_invalidate_cache(td, f))
	378	goto err;
	379
	380	if (td->o.fadvise_hint &&
	381	(f->filetype == FIO_TYPE_BD \|\| f->filetype == FIO_TYPE_FILE)) {
	382	int flags;
	383
	384	if (td_random(td))
	385	flags = POSIX_FADV_RANDOM;
	386	else
	387	flags = POSIX_FADV_SEQUENTIAL;
	388
	389	if (fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) {
	390	td_verror(td, errno, "fadvise");
	391	goto err;
	392	}
	393	}
	394
	395	#ifdef FIO_OS_DIRECTIO
	396	/*
	397	* Some OS's have a distinct call to mark the file non-buffered,
	398	* instead of using O_DIRECT (Solaris)
	399	*/
	400	if (td->o.odirect) {
	401	int ret = fio_set_odirect(f->fd);
	402
	403	if (ret) {
	404	td_verror(td, ret, "fio_set_odirect");
	405	goto err;
	406	}
	407	}
	408	#endif
	409
	410	done:
	411	log_file(td, f, FIO_LOG_OPEN_FILE);
	412	return 0;
	413	err:
	414	disk_util_dec(f->du);
	415	if (td->io_ops->close_file)
	416	td->io_ops->close_file(td, f);
	417	return 1;
	418	}
	419
	420	int td_io_close_file(struct thread_data td, struct fio_file f)
	421	{
	422	if (!fio_file_closing(f))
	423	log_file(td, f, FIO_LOG_CLOSE_FILE);
	424
	425	/*
	426	* mark as closing, do real close when last io on it has completed
	427	*/
	428	fio_file_set_closing(f);
	429
	430	disk_util_dec(f->du);
	431	unlock_file_all(td, f);
	432
	433	return put_file(td, f);
	434	}
	435
	436	int td_io_get_file_size(struct thread_data td, struct fio_file f)
	437	{
	438	if (!td->io_ops->get_file_size)
	439	return 0;
	440
	441	return td->io_ops->get_file_size(td, f);
	442	}
	443
	444	static int do_sync_file_range(struct thread_data td, struct fio_file f)
	445	{
	446	off64_t offset, nbytes;
	447
	448	offset = f->first_write;
	449	nbytes = f->last_write - f->first_write;
	450
	451	if (!nbytes)
	452	return 0;
	453
	454	return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range);
	455	}
	456
	457	int do_io_u_sync(struct thread_data td, struct io_u io_u)
	458	{
	459	int ret;
	460
	461	if (io_u->ddir == DDIR_SYNC) {
	462	ret = fsync(io_u->file->fd);
	463	} else if (io_u->ddir == DDIR_DATASYNC) {
	464	#ifdef FIO_HAVE_FDATASYNC
	465	ret = fdatasync(io_u->file->fd);
	466	#else
	467	ret = io_u->xfer_buflen;
	468	io_u->error = EINVAL;
	469	#endif
	470	} else if (io_u->ddir == DDIR_SYNC_FILE_RANGE)
	471	ret = do_sync_file_range(td, io_u->file);
	472	else {
	473	ret = io_u->xfer_buflen;
	474	io_u->error = EINVAL;
	475	}
	476
	477	if (ret < 0)
	478	io_u->error = errno;
	479
	480	return ret;
	481	}
	482
	483	int do_io_u_trim(struct thread_data td, struct io_u io_u)
	484	{
	485	#ifndef FIO_HAVE_TRIM
	486	io_u->error = EINVAL;
	487	return 0;
	488	#else
	489	struct fio_file *f = io_u->file;
	490	int ret;
	491
	492	ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen);
	493	if (!ret)
	494	return io_u->xfer_buflen;;
	495
	496	io_u->error = ret;
	497	return 0;
	498	#endif
	499	}