[fio.git] / filesetup.c

#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <assert.h>
#include <sys/stat.h>
#include <sys/mman.h>

#include "fio.h"
#include "os.h"

static int create_file(struct thread_data *td, struct fio_file *f)
{
	unsigned long long left;
	unsigned int bs;
	struct stat st;
	char *b;
	int r;

	if (td->filetype != FIO_TYPE_FILE)
		return 0;

	if (stat(f->file_name, &st) == -1) {
		if (!td->create_file) {
			td_verror(td, ENOENT);
			return 1;
		}
	} else if (st.st_size >= (off_t) f->file_size)
		return 0;

	f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
	if (f->fd < 0) {
		td_verror(td, errno);
		return 1;
	}

	if (ftruncate(f->fd, f->file_size) == -1) {
		td_verror(td, errno);
		goto err;
	}

	b = malloc(td->max_bs);
	memset(b, 0, td->max_bs);

	left = f->file_size;
	while (left && !td->terminate) {
		bs = td->max_bs;
		if (bs > left)
			bs = left;

		r = write(f->fd, b, bs);

		if (r == (int) bs) {
			left -= bs;
			continue;
		} else {
			if (r < 0)
				td_verror(td, errno);
			else
				td_verror(td, EIO);

			break;
		}
	}

	if (td->terminate)
		unlink(f->file_name);
	else if (td->create_fsync)
		fsync(f->fd);

	free(b);
	close(f->fd);
	f->fd = -1;
	return 0;
err:
	close(f->fd);
	f->fd = -1;
	return 1;
}

static int create_files(struct thread_data *td)
{
	struct fio_file *f;
	int i, err;

	/*
	 * unless specifically asked for overwrite, let normal io extend it
	 */
	if (!td->overwrite) {
		td->io_size = td->total_file_size;
		for_each_file(td, f, i)
			f->file_size = td->total_file_size / td->nr_files;

		return 0;
	}

	if (!td->total_file_size) {
		log_err("Need size for create\n");
		td_verror(td, EINVAL);
		return 1;
	}

	temp_stall_ts = 1;
	fprintf(f_out, "%s: Laying out IO file(s) (%LuMiB)\n",
					td->name, td->total_file_size >> 20);

	err = 0;
	for_each_file(td, f, i) {
		f->file_size = td->total_file_size / td->nr_files;
		err = create_file(td, f);
		if (err)
			break;

		td->io_size += f->file_size;
	}

	temp_stall_ts = 0;
	return err;
}

static int file_size(struct thread_data *td, struct fio_file *f)
{
	struct stat st;

	if (td->overwrite) {
		if (fstat(f->fd, &st) == -1) {
			td_verror(td, errno);
			return 1;
		}

		f->real_file_size = st.st_size;

		if (!f->file_size || f->file_size > f->real_file_size)
			f->file_size = f->real_file_size;
	}

	f->file_size -= f->file_offset;
	return 0;
}

static int bdev_size(struct thread_data *td, struct fio_file *f)
{
	unsigned long long bytes;
	int r;

	r = blockdev_size(f->fd, &bytes);
	if (r) {
		td_verror(td, r);
		return 1;
	}

	f->real_file_size = bytes;

	/*
	 * no extend possibilities, so limit size to device size if too large
	 */
	if (!f->file_size || f->file_size > f->real_file_size)
		f->file_size = f->real_file_size;

	f->file_size -= f->file_offset;
	return 0;
}

static int get_file_size(struct thread_data *td, struct fio_file *f)
{
	int ret = 0;

	if (td->filetype == FIO_TYPE_FILE)
		ret = file_size(td, f);
	else if (td->filetype == FIO_TYPE_BD)
		ret = bdev_size(td, f);
	else
		f->real_file_size = -1;

	if (ret)
		return ret;

	if (f->file_offset > f->real_file_size) {
		log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
		return 1;
	}

	td->io_size += f->file_size;
	return 0;
}

int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
{
	int ret = 0;

	/*
	 * FIXME: add blockdev flushing too
	 */
	if (td->io_ops->flags & FIO_MMAPIO)
		ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
	else if (td->filetype == FIO_TYPE_FILE)
		ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
	else if (td->filetype == FIO_TYPE_BD)
		ret = blockdev_invalidate_cache(f->fd);
	else if (td->filetype == FIO_TYPE_CHAR)
		ret = 0;

	if (ret < 0) {
		td_verror(td, errno);
		return 1;
	}

	return 0;
}

static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
{
	int flags;

	if (td_rw(td))
		flags = PROT_READ | PROT_WRITE;
	else if (td_write(td)) {
		flags = PROT_WRITE;

		if (td->verify != VERIFY_NONE)
			flags |= PROT_READ;
	} else
		flags = PROT_READ;

	f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
	if (f->mmap == MAP_FAILED) {
		f->mmap = NULL;
		td_verror(td, errno);
		return 1;
	}

	if (td->invalidate_cache && file_invalidate_cache(td, f))
		return 1;

	if (td->sequential) {
		if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
			td_verror(td, errno);
			return 1;
		}
	} else {
		if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
			td_verror(td, errno);
			return 1;
		}
	}

	return 0;
}

static int setup_files_mmap(struct thread_data *td)
{
	struct fio_file *f;
	int i, err = 0;

	for_each_file(td, f, i) {
		err = __setup_file_mmap(td, f);
		if (err)
			break;
	}

	return err;
}

static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
{
	if (td->invalidate_cache && file_invalidate_cache(td, f))
		return 1;

	if (td->sequential) {
		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
			td_verror(td, errno);
			return 1;
		}
	} else {
		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
			td_verror(td, errno);
			return 1;
		}
	}

	return 0;
}

static int setup_files_plain(struct thread_data *td)
{
	struct fio_file *f;
	int i, err = 0;

	for_each_file(td, f, i) {
		err = __setup_file_plain(td, f);
		if (err)
			break;
	}

	return err;
}

static int setup_file(struct thread_data *td, struct fio_file *f)
{
	int flags = 0;

	if (td->odirect)
		flags |= OS_O_DIRECT;

	if (td_write(td) || td_rw(td)) {
		if (td->filetype == FIO_TYPE_FILE) {
			if (!td->overwrite)
				flags |= O_TRUNC;

			flags |= O_CREAT;
		}
		if (td->sync_io)
			flags |= O_SYNC;

		flags |= O_RDWR;

		f->fd = open(f->file_name, flags, 0600);
	} else {
		if (td->filetype == FIO_TYPE_CHAR)
			flags |= O_RDWR;
		else
			flags |= O_RDONLY;

		f->fd = open(f->file_name, flags);
	}

	if (f->fd == -1) {
		td_verror(td, errno);
		return 1;
	}

	if (get_file_size(td, f))
		return 1;

	return 0;
}

int setup_files(struct thread_data *td)
{
	struct fio_file *f;
	int i, err;

	/*
	 * if ioengine defines a setup() method, it's responsible for
	 * setting up everything in the td->files[] area.
	 */
	if (td->io_ops->setup)
		return td->io_ops->setup(td);

	if (create_files(td))
		return 1;

	for_each_file(td, f, i) {
		err = setup_file(td, f);
		if (err)
			break;
	}

	if (td->io_size == 0) {
		log_err("%s: no io blocks\n", td->name);
		td_verror(td, EINVAL);
		return 1;
	}

	if (!td->zone_size)
		td->zone_size = td->io_size;

	td->total_io_size = td->io_size * td->loops;

	if (td->io_ops->flags & FIO_MMAPIO)
		return setup_files_mmap(td);
	else
		return setup_files_plain(td);
}

void close_files(struct thread_data *td)
{
	int i;

	for (i = 0; i < td->nr_files; i++) {
		struct fio_file *f = &td->files[i];

		if (f->fd != -1) {
			if (td->unlink && td->filetype == FIO_TYPE_FILE)
				unlink(f->file_name);
			close(f->fd);
			f->fd = -1;
		}
		if (f->mmap) {
			munmap(f->mmap, f->file_size);
			f->mmap = NULL;
		}
	}
}
Commit	Line	Data
53cdc686 JA	1	#include <unistd.h>
	2	#include <fcntl.h>
	3	#include <string.h>
	4	#include <assert.h>
	5	#include <sys/stat.h>
	6	#include <sys/mman.h>
	7
	8	#include "fio.h"
	9	#include "os.h"
	10
	11	static int create_file(struct thread_data td, struct fio_file f)
	12	{
	13	unsigned long long left;
	14	unsigned int bs;
b2a15192	15	struct stat st;
53cdc686 JA	16	char *b;
	17	int r;
	18
b2a15192 JA	19	if (td->filetype != FIO_TYPE_FILE)
	20	return 0;
	21
	22	if (stat(f->file_name, &st) == -1) {
	23	if (!td->create_file) {
	24	td_verror(td, ENOENT);
	25	return 1;
	26	}
	27	} else if (st.st_size >= (off_t) f->file_size)
	28	return 0;
	29
53cdc686 JA	30	f->fd = open(f->file_name, O_WRONLY \| O_CREAT \| O_TRUNC, 0644);
	31	if (f->fd < 0) {
	32	td_verror(td, errno);
	33	return 1;
	34	}
	35
	36	if (ftruncate(f->fd, f->file_size) == -1) {
	37	td_verror(td, errno);
	38	goto err;
	39	}
	40
	41	b = malloc(td->max_bs);
	42	memset(b, 0, td->max_bs);
	43
	44	left = f->file_size;
	45	while (left && !td->terminate) {
	46	bs = td->max_bs;
	47	if (bs > left)
	48	bs = left;
	49
	50	r = write(f->fd, b, bs);
	51
	52	if (r == (int) bs) {
	53	left -= bs;
	54	continue;
	55	} else {
	56	if (r < 0)
	57	td_verror(td, errno);
	58	else
	59	td_verror(td, EIO);
	60
	61	break;
	62	}
	63	}
	64
	65	if (td->terminate)
	66	unlink(f->file_name);
	67	else if (td->create_fsync)
	68	fsync(f->fd);
	69
	70	free(b);
	71	close(f->fd);
	72	f->fd = -1;
	73	return 0;
	74	err:
	75	close(f->fd);
	76	f->fd = -1;
	77	return 1;
	78	}
	79
	80	static int create_files(struct thread_data *td)
	81	{
	82	struct fio_file *f;
	83	int i, err;
	84
	85	/*
	86	* unless specifically asked for overwrite, let normal io extend it
	87	*/
	88	if (!td->overwrite) {
	89	td->io_size = td->total_file_size;
	90	for_each_file(td, f, i)
	91	f->file_size = td->total_file_size / td->nr_files;
	92
	93	return 0;
94	}
95
96	if (!td->total_file_size) {
97	log_err("Need size for create\n");
98	td_verror(td, EINVAL);
99	return 1;
100	}
101
102	temp_stall_ts = 1;
103	fprintf(f_out, "%s: Laying out IO file(s) (%LuMiB)\n",
104	td->name, td->total_file_size >> 20);
105
106	err = 0;
107	for_each_file(td, f, i) {
108	f->file_size = td->total_file_size / td->nr_files;
109	err = create_file(td, f);
b2a15192	110	if (err)
53cdc686 JA	111	break;
	112
	113	td->io_size += f->file_size;
	114	}
	115
	116	temp_stall_ts = 0;
	117	return err;
	118	}
	119
	120	static int file_size(struct thread_data td, struct fio_file f)
	121	{
	122	struct stat st;
	123
	124	if (td->overwrite) {
	125	if (fstat(f->fd, &st) == -1) {
	126	td_verror(td, errno);
	127	return 1;
	128	}
	129
	130	f->real_file_size = st.st_size;
	131
	132	if (!f->file_size \|\| f->file_size > f->real_file_size)
	133	f->file_size = f->real_file_size;
	134	}
	135
	136	f->file_size -= f->file_offset;
	137	return 0;
	138	}
	139
	140	static int bdev_size(struct thread_data td, struct fio_file f)
	141	{
	142	unsigned long long bytes;
	143	int r;
	144
	145	r = blockdev_size(f->fd, &bytes);
	146	if (r) {
	147	td_verror(td, r);
	148	return 1;
	149	}
	150
	151	f->real_file_size = bytes;
	152
	153	/*
	154	* no extend possibilities, so limit size to device size if too large
	155	*/
	156	if (!f->file_size \|\| f->file_size > f->real_file_size)
	157	f->file_size = f->real_file_size;
	158
	159	f->file_size -= f->file_offset;
	160	return 0;
	161	}
	162
	163	static int get_file_size(struct thread_data td, struct fio_file f)
	164	{
	165	int ret = 0;
	166
	167	if (td->filetype == FIO_TYPE_FILE)
	168	ret = file_size(td, f);
	169	else if (td->filetype == FIO_TYPE_BD)
	170	ret = bdev_size(td, f);
	171	else
	172	f->real_file_size = -1;
	173
	174	if (ret)
175	return ret;
176
177	if (f->file_offset > f->real_file_size) {
178	log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
179	return 1;
180	}
181
182	td->io_size += f->file_size;
183	return 0;
184	}
185
e5b401d4 JA	186	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	187	{
	188	int ret = 0;
	189
	190	/*
	191	* FIXME: add blockdev flushing too
	192	*/
	193	if (td->io_ops->flags & FIO_MMAPIO)
	194	ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
	195	else if (td->filetype == FIO_TYPE_FILE)
	196	ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
	197	else if (td->filetype == FIO_TYPE_BD)
	198	ret = blockdev_invalidate_cache(f->fd);
	199	else if (td->filetype == FIO_TYPE_CHAR)
	200	ret = 0;
	201
	202	if (ret < 0) {
	203	td_verror(td, errno);
	204	return 1;
	205	}
	206
	207	return 0;
	208	}
	209
53cdc686 JA	210	static int __setup_file_mmap(struct thread_data td, struct fio_file f)
	211	{
	212	int flags;
	213
	214	if (td_rw(td))
	215	flags = PROT_READ \| PROT_WRITE;
	216	else if (td_write(td)) {
	217	flags = PROT_WRITE;
	218
	219	if (td->verify != VERIFY_NONE)
	220	flags \|= PROT_READ;
	221	} else
	222	flags = PROT_READ;
	223
	224	f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
	225	if (f->mmap == MAP_FAILED) {
	226	f->mmap = NULL;
	227	td_verror(td, errno);
	228	return 1;
	229	}
	230
e5b401d4 JA	231	if (td->invalidate_cache && file_invalidate_cache(td, f))
e5b401d4 JA	232	return 1;
53cdc686 JA	233
	234	if (td->sequential) {
	235	if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
	236	td_verror(td, errno);
	237	return 1;
	238	}
	239	} else {
	240	if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
	241	td_verror(td, errno);
	242	return 1;
	243	}
	244	}
	245
	246	return 0;
	247	}
	248
	249	static int setup_files_mmap(struct thread_data *td)
	250	{
	251	struct fio_file *f;
	252	int i, err = 0;
	253
	254	for_each_file(td, f, i) {
	255	err = __setup_file_mmap(td, f);
	256	if (err)
	257	break;
	258	}
	259
	260	return err;
	261	}
	262
	263	static int __setup_file_plain(struct thread_data td, struct fio_file f)
	264	{
e5b401d4 JA	265	if (td->invalidate_cache && file_invalidate_cache(td, f))
e5b401d4 JA	266	return 1;
53cdc686 JA	267
	268	if (td->sequential) {
	269	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
	270	td_verror(td, errno);
	271	return 1;
	272	}
	273	} else {
	274	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
	275	td_verror(td, errno);
	276	return 1;
	277	}
	278	}
	279
	280	return 0;
	281	}
	282
	283	static int setup_files_plain(struct thread_data *td)
	284	{
	285	struct fio_file *f;
	286	int i, err = 0;
	287
	288	for_each_file(td, f, i) {
	289	err = __setup_file_plain(td, f);
	290	if (err)
	291	break;
	292	}
	293
	294	return err;
	295	}
	296
	297	static int setup_file(struct thread_data td, struct fio_file f)
	298	{
53cdc686 JA	299	int flags = 0;
53cdc686 JA	300
53cdc686 JA	301	if (td->odirect)
	302	flags \|= OS_O_DIRECT;
	303
	304	if (td_write(td) \|\| td_rw(td)) {
	305	if (td->filetype == FIO_TYPE_FILE) {
	306	if (!td->overwrite)
	307	flags \|= O_TRUNC;
	308
	309	flags \|= O_CREAT;
	310	}
	311	if (td->sync_io)
	312	flags \|= O_SYNC;
	313
	314	flags \|= O_RDWR;
	315
	316	f->fd = open(f->file_name, flags, 0600);
	317	} else {
	318	if (td->filetype == FIO_TYPE_CHAR)
	319	flags \|= O_RDWR;
	320	else
	321	flags \|= O_RDONLY;
	322
	323	f->fd = open(f->file_name, flags);
	324	}
	325
	326	if (f->fd == -1) {
	327	td_verror(td, errno);
	328	return 1;
	329	}
	330
	331	if (get_file_size(td, f))
	332	return 1;
	333
	334	return 0;
	335	}
	336
	337	int setup_files(struct thread_data *td)
	338	{
	339	struct fio_file *f;
	340	int i, err;
	341
	342	/*
	343	* if ioengine defines a setup() method, it's responsible for
	344	* setting up everything in the td->files[] area.
	345	*/
	346	if (td->io_ops->setup)
	347	return td->io_ops->setup(td);
	348
	349	if (create_files(td))
	350	return 1;
	351
	352	for_each_file(td, f, i) {
	353	err = setup_file(td, f);
	354	if (err)
	355	break;
	356	}
	357
	358	if (td->io_size == 0) {
	359	log_err("%s: no io blocks\n", td->name);
	360	td_verror(td, EINVAL);
	361	return 1;
	362	}
	363
	364	if (!td->zone_size)
365	td->zone_size = td->io_size;
366
367	td->total_io_size = td->io_size * td->loops;
368
369	if (td->io_ops->flags & FIO_MMAPIO)
370	return setup_files_mmap(td);
371	else
372	return setup_files_plain(td);
373	}
374
375	void close_files(struct thread_data *td)
376	{
377	int i;
378
379	for (i = 0; i < td->nr_files; i++) {
380	struct fio_file *f = &td->files[i];
381
382	if (f->fd != -1) {
f6cbb269 JA	383	if (td->unlink && td->filetype == FIO_TYPE_FILE)
f6cbb269 JA	384	unlink(f->file_name);
53cdc686 JA	385	close(f->fd);
	386	f->fd = -1;
	387	}
	388	if (f->mmap) {
	389	munmap(f->mmap, f->file_size);
	390	f->mmap = NULL;
	391	}
	392	}
	393	}