[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;
}

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) {
		if (madvise(f->mmap, f->file_size, MADV_DONTNEED) < 0) {
			td_verror(td, errno);
			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) {
		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED) < 0) {
			td_verror(td, errno);
			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
186	static int __setup_file_mmap(struct thread_data td, struct fio_file f)
187	{
188	int flags;
189
190	if (td_rw(td))
191	flags = PROT_READ \| PROT_WRITE;
192	else if (td_write(td)) {
193	flags = PROT_WRITE;
194
195	if (td->verify != VERIFY_NONE)
196	flags \|= PROT_READ;
197	} else
198	flags = PROT_READ;
199
200	f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
201	if (f->mmap == MAP_FAILED) {
202	f->mmap = NULL;
203	td_verror(td, errno);
204	return 1;
205	}
206
207	if (td->invalidate_cache) {
208	if (madvise(f->mmap, f->file_size, MADV_DONTNEED) < 0) {
209	td_verror(td, errno);
210	return 1;
211	}
212	}
213
214	if (td->sequential) {
215	if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
216	td_verror(td, errno);
217	return 1;
218	}
219	} else {
220	if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
221	td_verror(td, errno);
222	return 1;
223	}
224	}
225
226	return 0;
227	}
228
229	static int setup_files_mmap(struct thread_data *td)
230	{
231	struct fio_file *f;
232	int i, err = 0;
233
234	for_each_file(td, f, i) {
235	err = __setup_file_mmap(td, f);
236	if (err)
237	break;
238	}
239
240	return err;
241	}
242
243	static int __setup_file_plain(struct thread_data td, struct fio_file f)
244	{
245	if (td->invalidate_cache) {
246	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED) < 0) {
247	td_verror(td, errno);
248	return 1;
249	}
250	}
251
252	if (td->sequential) {
253	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
254	td_verror(td, errno);
255	return 1;
256	}
257	} else {
258	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
259	td_verror(td, errno);
260	return 1;
261	}
262	}
263
264	return 0;
265	}
266
267	static int setup_files_plain(struct thread_data *td)
268	{
269	struct fio_file *f;
270	int i, err = 0;
271
272	for_each_file(td, f, i) {
273	err = __setup_file_plain(td, f);
274	if (err)
275	break;
276	}
277
278	return err;
279	}
280
281	static int setup_file(struct thread_data td, struct fio_file f)
282	{
53cdc686 JA	283	int flags = 0;
53cdc686 JA	284
53cdc686 JA	285	if (td->odirect)
	286	flags \|= OS_O_DIRECT;
	287
	288	if (td_write(td) \|\| td_rw(td)) {
	289	if (td->filetype == FIO_TYPE_FILE) {
	290	if (!td->overwrite)
	291	flags \|= O_TRUNC;
	292
	293	flags \|= O_CREAT;
	294	}
	295	if (td->sync_io)
	296	flags \|= O_SYNC;
	297
	298	flags \|= O_RDWR;
	299
	300	f->fd = open(f->file_name, flags, 0600);
	301	} else {
	302	if (td->filetype == FIO_TYPE_CHAR)
	303	flags \|= O_RDWR;
	304	else
	305	flags \|= O_RDONLY;
	306
	307	f->fd = open(f->file_name, flags);
	308	}
	309
	310	if (f->fd == -1) {
	311	td_verror(td, errno);
	312	return 1;
	313	}
	314
	315	if (get_file_size(td, f))
	316	return 1;
	317
	318	return 0;
	319	}
	320
	321	int setup_files(struct thread_data *td)
	322	{
	323	struct fio_file *f;
	324	int i, err;
	325
	326	/*
	327	* if ioengine defines a setup() method, it's responsible for
	328	* setting up everything in the td->files[] area.
	329	*/
	330	if (td->io_ops->setup)
	331	return td->io_ops->setup(td);
	332
	333	if (create_files(td))
	334	return 1;
	335
	336	for_each_file(td, f, i) {
	337	err = setup_file(td, f);
	338	if (err)
	339	break;
	340	}
	341
	342	if (td->io_size == 0) {
	343	log_err("%s: no io blocks\n", td->name);
	344	td_verror(td, EINVAL);
	345	return 1;
	346	}
	347
	348	if (!td->zone_size)
349	td->zone_size = td->io_size;
350
351	td->total_io_size = td->io_size * td->loops;
352
353	if (td->io_ops->flags & FIO_MMAPIO)
354	return setup_files_mmap(td);
355	else
356	return setup_files_plain(td);
357	}
358
359	void close_files(struct thread_data *td)
360	{
361	int i;
362
363	for (i = 0; i < td->nr_files; i++) {
364	struct fio_file *f = &td->files[i];
365
366	if (f->fd != -1) {
f6cbb269 JA	367	if (td->unlink && td->filetype == FIO_TYPE_FILE)
f6cbb269 JA	368	unlink(f->file_name);
53cdc686 JA	369	close(f->fd);
	370	f->fd = -1;
	371	}
	372	if (f->mmap) {
	373	munmap(f->mmap, f->file_size);
	374	f->mmap = NULL;
	375	}
	376	}
	377	}