[fio.git] / filesetup.c

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

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

static int extend_file(struct thread_data *td, struct fio_file *f)
{
	int r, new_layout = 0, flags;
	unsigned long long left;
	unsigned int bs;
	char *b;

	/*
	 * check if we need to lay the file out complete again. fio
	 * does that for operations involving reads, or for writes
	 * where overwrite is set
	 */
	if (td_read(td) || (td_write(td) && td->o.overwrite))
		new_layout = 1;

	if (new_layout && (f->flags & FIO_FILE_EXISTS)) {
		if (unlink(f->file_name) < 0) {
			td_verror(td, errno, "unlink");
			return 1;
		}
	}

	flags = O_WRONLY | O_CREAT;
	if (new_layout)
		flags |= O_TRUNC;

	f->fd = open(f->file_name, flags, 0644);
	if (f->fd < 0) {
		td_verror(td, errno, "open");
		return 1;
	}

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

	if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
		td_verror(td, errno, "posix_fallocate");
		goto err;
	}

	if (!new_layout)
		goto done;

	b = malloc(td->o.max_bs[DDIR_WRITE]);
	memset(b, 0, td->o.max_bs[DDIR_WRITE]);

	left = f->real_file_size;
	while (left && !td->terminate) {
		bs = td->o.max_bs[DDIR_WRITE];
		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, "write");
			else
				td_verror(td, EIO, "write");

			break;
		}
	}

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

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

static unsigned long long get_rand_file_size(struct thread_data *td)
{
	unsigned long long ret;
	long r;

	r = os_random_long(&td->file_size_state);
	ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0)));
	ret -= (ret % td->o.rw_min_bs);
	return ret;
}

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

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

	f->real_file_size = st.st_size;
	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, "blockdev_size");
		return 1;
	}

	f->real_file_size = bytes;
	return 0;
}

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

	if (f->filetype == FIO_TYPE_FILE)
		ret = file_size(td, f);
	else if (f->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->o.name, f->file_offset, f->real_file_size);
		return 1;
	}

	return 0;
}

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

	if (td->o.odirect)
		return 0;

	/*
	 * FIXME: add blockdev flushing too
	 */
	if (f->mmap)
		ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
	else if (f->filetype == FIO_TYPE_FILE)
		ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
	else if (f->filetype == FIO_TYPE_BD) {
		ret = blockdev_invalidate_cache(f->fd);
		if (ret < 0 && errno == EACCES && geteuid()) {
			log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
			ret = 0;
		}
	} else if (f->filetype == FIO_TYPE_CHAR)
		ret = 0;

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

	return ret;
}

void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
{
	close(f->fd);
	f->fd = -1;
}

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

	if (td->o.odirect)
		flags |= OS_O_DIRECT;
	if (td->o.sync_io)
		flags |= O_SYNC;

	if (td_write(td) || td_rw(td)) {
		flags |= O_RDWR;

		if (f->filetype == FIO_TYPE_FILE)
			flags |= O_CREAT;

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

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

	if (f->fd == -1) {
		char buf[FIO_VERROR_SIZE];
		int __e = errno;

		snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);

		td_verror(td, __e, buf);
	}

	if (get_file_size(td, f))
		goto err;

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

int open_files(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;
	int err = 0;

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

		if (td->o.open_files == td->nr_open_files)
			break;
	}

	if (!err)
		return 0;

	for_each_file(td, f, i)
		td_io_close_file(td, f);

	return err;
}

/*
 * open/close all files, so that ->real_file_size gets set
 */
static void get_file_sizes(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;

	for_each_file(td, f, i) {
		if (td->io_ops->open_file(td, f)) {
			td->error = 0;
			memset(td->verror, 0, sizeof(td->verror));
		} else
			td->io_ops->close_file(td, f);
	}
}

/*
 * Open the files and setup files sizes, creating files if necessary.
 */
int setup_files(struct thread_data *td)
{
	unsigned long long total_size, extend_size;
	struct fio_file *f;
	unsigned int i;
	int err = 0, need_extend;

	/*
	 * if ioengine defines a setup() method, it's responsible for
	 * opening the files and setting f->real_file_size to indicate
	 * the valid range for that file.
	 */
	if (td->io_ops->setup)
		err = td->io_ops->setup(td);
	else
		get_file_sizes(td);

	if (err)
		return err;

	/*
	 * check sizes. if the files/devices do not exist and the size
	 * isn't passed to fio, abort.
	 */
	total_size = 0;
	for_each_file(td, f, i) {
		if (f->real_file_size == -1ULL)
			total_size = -1ULL;
		else
			total_size += f->real_file_size;
	}

	/*
	 * device/file sizes are zero and no size given, punt
	 */
	if (!total_size && !td->o.size) {
		log_err("%s: you need to specify size=\n", td->o.name);
		td_verror(td, EINVAL, "total_file_size");
		return 1;
	}

	/*
	 * now file sizes are known, so we can set ->io_size. if size= is
	 * not given, ->io_size is just equal to ->real_file_size. if size
	 * is given, ->io_size is size / nr_files.
	 */
	extend_size = total_size = 0;
	need_extend = 0;
	for_each_file(td, f, i) {
		if (!td->o.file_size_low) {
			/*
			 * no file size range given, file size is equal to
			 * total size divided by number of files. if that is
			 * zero, set it to the real file size.
			 */
			f->io_size = td->o.size / td->o.nr_files;
			if (!f->io_size)
				f->io_size = f->real_file_size;
		} else if (f->real_file_size < td->o.file_size_low ||
			   f->real_file_size > td->o.file_size_high) {
			/*
			 * file size given. if it's fixed, use that. if it's a
			 * range, generate a random size in-between.
			 */
			if (td->o.file_size_low == td->o.file_size_high)
				f->io_size = td->o.file_size_low;
			else
				f->io_size = get_rand_file_size(td);
		} else
			f->io_size = f->real_file_size;

		if (f->io_size == -1ULL)
			total_size = -1ULL;
		else
			total_size += f->io_size;

		if (f->filetype == FIO_TYPE_FILE &&
		    f->io_size > f->real_file_size &&
		    !(td->io_ops->flags & FIO_DISKLESSIO)) {
			need_extend++;
			extend_size += f->io_size;
			f->flags |= FIO_FILE_EXTEND;
		}
	}

	if (!td->o.size)
		td->o.size = total_size;

	/*
	 * See if we need to extend some files
	 */
	if (need_extend) {
		temp_stall_ts = 1;
		log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
			td->o.name, need_extend, extend_size >> 20);

		for_each_file(td, f, i) {
			if (!(f->flags & FIO_FILE_EXTEND))
				continue;

			f->flags &= ~FIO_FILE_EXTEND;
			f->real_file_size = f->io_size;
			err = extend_file(td, f);
			if (err)
				break;
		}
		temp_stall_ts = 0;
	}

	if (err)
		return err;

	if (!td->o.zone_size)
		td->o.zone_size = td->o.size;

	td->total_io_size = td->o.size * td->o.loops;
	return 0;
}

int init_random_map(struct thread_data *td)
{
	int num_maps, blocks;
	struct fio_file *f;
	unsigned int i;

	if (td->o.norandommap)
		return 0;

	for_each_file(td, f, i) {
		blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
		num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
		f->file_map = malloc(num_maps * sizeof(long));
		if (!f->file_map) {
			log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
			return 1;
		}
		f->num_maps = num_maps;
		memset(f->file_map, 0, num_maps * sizeof(long));
	}

	return 0;
}

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

	for_each_file(td, f, i) {
		if ((f->flags & FIO_FILE_UNLINK) &&
		    f->filetype == FIO_TYPE_FILE)
			unlink(f->file_name);

		td_io_close_file(td, f);

		free(f->file_name);
		f->file_name = NULL;

		if (f->file_map) {
			free(f->file_map);
			f->file_map = NULL;
		}
	}

	td->o.filename = NULL;
	free(td->files);
	td->files = NULL;
	td->o.nr_files = 0;
}

static void get_file_type(struct fio_file *f)
{
	struct stat sb;

	f->filetype = FIO_TYPE_FILE;

	if (!lstat(f->file_name, &sb)) {
		if (S_ISBLK(sb.st_mode))
			f->filetype = FIO_TYPE_BD;
		else if (S_ISCHR(sb.st_mode))
			f->filetype = FIO_TYPE_CHAR;
	}
}

void add_file(struct thread_data *td, const char *fname)
{
	int cur_files = td->files_index;
	char file_name[PATH_MAX];
	struct fio_file *f;
	int len = 0;

	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));

	f = &td->files[cur_files];
	memset(f, 0, sizeof(*f));
	f->fd = -1;

	if (td->o.directory)
		len = sprintf(file_name, "%s/", td->o.directory);

	sprintf(file_name + len, "%s", fname);
	f->file_name = strdup(file_name);

	get_file_type(f);

	td->files_index++;
	if (f->filetype == FIO_TYPE_FILE)
		td->nr_normal_files++;
}

void get_file(struct fio_file *f)
{
	f->references++;
}

void put_file(struct thread_data *td, struct fio_file *f)
{
	if (!(f->flags & FIO_FILE_OPEN))
		return;

	assert(f->references);
	if (--f->references)
		return;

	if (should_fsync(td) && td->o.fsync_on_close)
		fsync(f->fd);

	if (td->io_ops->close_file)
		td->io_ops->close_file(td, f);
	td->nr_open_files--;
	f->flags &= ~FIO_FILE_OPEN;
}

static int recurse_dir(struct thread_data *td, const char *dirname)
{
	struct dirent *dir;
	int ret = 0;
	DIR *D;

	D = opendir(dirname);
	if (!D) {
		td_verror(td, errno, "opendir");
		return 1;
	}

	while ((dir = readdir(D)) != NULL) {
		char full_path[PATH_MAX];
		struct stat sb;

		if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
			continue;

		sprintf(full_path, "%s/%s", dirname, dir->d_name);

		if (lstat(full_path, &sb) == -1) {
			if (errno != ENOENT) {
				td_verror(td, errno, "stat");
				return 1;
			}
		}

		if (S_ISREG(sb.st_mode)) {
			add_file(td, full_path);
			td->o.nr_files++;
			continue;
		}

		if ((ret = recurse_dir(td, full_path)) != 0)
			break;
	}

	closedir(D);
	return ret;
}

int add_dir_files(struct thread_data *td, const char *path)
{
	return recurse_dir(td, path);
}

void dup_files(struct thread_data *td, struct thread_data *org)
{
	struct fio_file *f;
	unsigned int i;
	size_t bytes;

	if (!org->files)
		return;

	bytes = org->files_index * sizeof(*f);
	td->files = malloc(bytes);
	memcpy(td->files, org->files, bytes);

	for_each_file(td, f, i) {
		if (f->file_name)
			f->file_name = strdup(f->file_name);
	}
}
Commit	Line	Data
53cdc686 JA	1	#include <unistd.h>
	2	#include <fcntl.h>
	3	#include <string.h>
	4	#include <assert.h>
bbf6b540	5	#include <dirent.h>
53cdc686 JA	6	#include <sys/stat.h>
53cdc686 JA	7	#include <sys/mman.h>
bbf6b540	8	#include <sys/types.h>
53cdc686 JA	9
	10	#include "fio.h"
	11	#include "os.h"
	12
7bb48f84	13	static int extend_file(struct thread_data td, struct fio_file f)
25205e97	14	{
507a702f	15	int r, new_layout = 0, flags;
25205e97 JA	16	unsigned long long left;
	17	unsigned int bs;
	18	char *b;
b2a15192	19
507a702f JA	20	/*
	21	* check if we need to lay the file out complete again. fio
	22	* does that for operations involving reads, or for writes
	23	* where overwrite is set
	24	*/
	25	if (td_read(td) \|\| (td_write(td) && td->o.overwrite))
	26	new_layout = 1;
	27
	28	if (new_layout && (f->flags & FIO_FILE_EXISTS)) {
7bb48f84 JA	29	if (unlink(f->file_name) < 0) {
	30	td_verror(td, errno, "unlink");
	31	return 1;
	32	}
	33	}
	34
507a702f JA	35	flags = O_WRONLY \| O_CREAT;
	36	if (new_layout)
	37	flags \|= O_TRUNC;
	38
	39	f->fd = open(f->file_name, flags, 0644);
53cdc686	40	if (f->fd < 0) {
e1161c32	41	td_verror(td, errno, "open");
53cdc686 JA	42	return 1;
	43	}
	44
7bb48f84	45	if (ftruncate(f->fd, f->real_file_size) == -1) {
e1161c32	46	td_verror(td, errno, "ftruncate");
53cdc686 JA	47	goto err;
	48	}
	49
7bb48f84	50	if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
e1161c32	51	td_verror(td, errno, "posix_fallocate");
40f8298c JA	52	goto err;
	53	}
	54
507a702f JA	55	if (!new_layout)
	56	goto done;
	57
2dc1bbeb JA	58	b = malloc(td->o.max_bs[DDIR_WRITE]);
2dc1bbeb JA	59	memset(b, 0, td->o.max_bs[DDIR_WRITE]);
53cdc686	60
7bb48f84	61	left = f->real_file_size;
53cdc686	62	while (left && !td->terminate) {
2dc1bbeb	63	bs = td->o.max_bs[DDIR_WRITE];
53cdc686 JA	64	if (bs > left)
	65	bs = left;
	66
	67	r = write(f->fd, b, bs);
	68
	69	if (r == (int) bs) {
	70	left -= bs;
	71	continue;
	72	} else {
	73	if (r < 0)
e1161c32	74	td_verror(td, errno, "write");
53cdc686	75	else
e1161c32	76	td_verror(td, EIO, "write");
53cdc686 JA	77
	78	break;
	79	}
	80	}
	81
	82	if (td->terminate)
	83	unlink(f->file_name);
2dc1bbeb	84	else if (td->o.create_fsync)
53cdc686 JA	85	fsync(f->fd);
	86
	87	free(b);
507a702f	88	done:
53cdc686 JA	89	close(f->fd);
	90	f->fd = -1;
	91	return 0;
	92	err:
	93	close(f->fd);
	94	f->fd = -1;
	95	return 1;
	96	}
	97
7bb48f84	98	static unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64	99	{
9c60ce64 JA	100	unsigned long long ret;
	101	long r;
	102
9c60ce64	103	r = os_random_long(&td->file_size_state);
7bb48f84	104	ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0)));
2dc1bbeb	105	ret -= (ret % td->o.rw_min_bs);
9c60ce64 JA	106	return ret;
	107	}
	108
53cdc686 JA	109	static int file_size(struct thread_data td, struct fio_file f)
	110	{
	111	struct stat st;
	112
7bb48f84 JA	113	if (fstat(f->fd, &st) == -1) {
	114	td_verror(td, errno, "fstat");
	115	return 1;
	116	}
53cdc686	117
7bb48f84	118	f->real_file_size = st.st_size;
53cdc686 JA	119	return 0;
	120	}
	121
	122	static int bdev_size(struct thread_data td, struct fio_file f)
	123	{
	124	unsigned long long bytes;
	125	int r;
	126
	127	r = blockdev_size(f->fd, &bytes);
	128	if (r) {
e1161c32	129	td_verror(td, r, "blockdev_size");
53cdc686 JA	130	return 1;
	131	}
	132
	133	f->real_file_size = bytes;
53cdc686 JA	134	return 0;
	135	}
	136
	137	static int get_file_size(struct thread_data td, struct fio_file f)
	138	{
	139	int ret = 0;
	140
7bb48f84 JA	141	if (f->filetype == FIO_TYPE_FILE)
	142	ret = file_size(td, f);
	143	else if (f->filetype == FIO_TYPE_BD)
53cdc686 JA	144	ret = bdev_size(td, f);
	145	else
	146	f->real_file_size = -1;
	147
	148	if (ret)
	149	return ret;
	150
	151	if (f->file_offset > f->real_file_size) {
2dc1bbeb	152	log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
53cdc686 JA	153	return 1;
	154	}
	155
53cdc686 JA	156	return 0;
	157	}
	158
e5b401d4 JA	159	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	160	{
	161	int ret = 0;
	162
2dc1bbeb	163	if (td->o.odirect)
b5af8293 JA	164	return 0;
b5af8293 JA	165
e5b401d4 JA	166	/*
	167	* FIXME: add blockdev flushing too
	168	*/
b5af8293	169	if (f->mmap)
7bb48f84	170	ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
467d1b6b	171	else if (f->filetype == FIO_TYPE_FILE)
7bb48f84	172	ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
7e0e25c9	173	else if (f->filetype == FIO_TYPE_BD) {
b5af8293	174	ret = blockdev_invalidate_cache(f->fd);
7e0e25c9 JA	175	if (ret < 0 && errno == EACCES && geteuid()) {
	176	log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
	177	ret = 0;
	178	}
	179	} else if (f->filetype == FIO_TYPE_CHAR)
e5b401d4 JA	180	ret = 0;
	181
	182	if (ret < 0) {
e1161c32	183	td_verror(td, errno, "invalidate_cache");
e5b401d4 JA	184	return 1;
	185	}
	186
ad2da605	187	return ret;
e5b401d4 JA	188	}
e5b401d4 JA	189
b5af8293	190	void generic_close_file(struct thread_data fio_unused td, struct fio_file f)
53cdc686	191	{
b5af8293 JA	192	close(f->fd);
b5af8293 JA	193	f->fd = -1;
53cdc686 JA	194	}
53cdc686 JA	195
b5af8293	196	int generic_open_file(struct thread_data td, struct fio_file f)
53cdc686	197	{
53cdc686 JA	198	int flags = 0;
53cdc686 JA	199
2dc1bbeb	200	if (td->o.odirect)
2fd233b7	201	flags \|= OS_O_DIRECT;
2dc1bbeb	202	if (td->o.sync_io)
2fd233b7	203	flags \|= O_SYNC;
53cdc686	204
2fd233b7 JA	205	if (td_write(td) \|\| td_rw(td)) {
2fd233b7 JA	206	flags \|= O_RDWR;
53cdc686	207
af52b345	208	if (f->filetype == FIO_TYPE_FILE)
2fd233b7	209	flags \|= O_CREAT;
2fd233b7	210
b5af8293	211	f->fd = open(f->file_name, flags, 0600);
2fd233b7	212	} else {
af52b345	213	if (f->filetype == FIO_TYPE_CHAR)
2fd233b7 JA	214	flags \|= O_RDWR;
	215	else
	216	flags \|= O_RDONLY;
	217
b5af8293	218	f->fd = open(f->file_name, flags);
53cdc686 JA	219	}
	220
	221	if (f->fd == -1) {
e4e33258	222	char buf[FIO_VERROR_SIZE];
e1161c32 JA	223	int __e = errno;
e1161c32 JA	224
e4e33258 JA	225	snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
	226
	227	td_verror(td, __e, buf);
53cdc686 JA	228	}
53cdc686 JA	229
b5af8293 JA	230	if (get_file_size(td, f))
	231	goto err;
	232
53cdc686	233	return 0;
b5af8293 JA	234	err:
	235	close(f->fd);
	236	return 1;
	237	}
	238
21972cde JA	239	int open_files(struct thread_data *td)
	240	{
	241	struct fio_file *f;
af52b345 JA	242	unsigned int i;
af52b345 JA	243	int err = 0;
21972cde JA	244
21972cde JA	245	for_each_file(td, f, i) {
b5af8293	246	err = td_io_open_file(td, f);
21972cde JA	247	if (err)
21972cde JA	248	break;
b5af8293	249
2dc1bbeb	250	if (td->o.open_files == td->nr_open_files)
b5af8293	251	break;
21972cde JA	252	}
21972cde JA	253
7abf833d JA	254	if (!err)
	255	return 0;
	256
bdb4e2e9	257	for_each_file(td, f, i)
b5af8293	258	td_io_close_file(td, f);
7abf833d	259
21972cde JA	260	return err;
	261	}
	262
7bb48f84 JA	263	/*
	264	* open/close all files, so that ->real_file_size gets set
	265	*/
000b0803	266	static void get_file_sizes(struct thread_data *td)
7bb48f84 JA	267	{
	268	struct fio_file *f;
	269	unsigned int i;
7bb48f84 JA	270
7bb48f84 JA	271	for_each_file(td, f, i) {
000b0803	272	if (td->io_ops->open_file(td, f)) {
7bb48f84 JA	273	td->error = 0;
7bb48f84 JA	274	memset(td->verror, 0, sizeof(td->verror));
000b0803 JA	275	} else
000b0803 JA	276	td->io_ops->close_file(td, f);
7bb48f84	277	}
7bb48f84 JA	278	}
	279
	280	/*
	281	* Open the files and setup files sizes, creating files if necessary.
	282	*/
53cdc686 JA	283	int setup_files(struct thread_data *td)
53cdc686 JA	284	{
7bb48f84	285	unsigned long long total_size, extend_size;
53cdc686	286	struct fio_file *f;
af52b345	287	unsigned int i;
000b0803	288	int err = 0, need_extend;
53cdc686 JA	289
	290	/*
	291	* if ioengine defines a setup() method, it's responsible for
7bb48f84 JA	292	* opening the files and setting f->real_file_size to indicate
7bb48f84 JA	293	* the valid range for that file.
53cdc686 JA	294	*/
53cdc686 JA	295	if (td->io_ops->setup)
7bb48f84 JA	296	err = td->io_ops->setup(td);
7bb48f84 JA	297	else
000b0803	298	get_file_sizes(td);
53cdc686	299
f1027063 JA	300	if (err)
	301	return err;
	302
0a7eb121	303	/*
7bb48f84 JA	304	* check sizes. if the files/devices do not exist and the size
7bb48f84 JA	305	* isn't passed to fio, abort.
0a7eb121	306	*/
7bb48f84 JA	307	total_size = 0;
	308	for_each_file(td, f, i) {
	309	if (f->real_file_size == -1ULL)
	310	total_size = -1ULL;
	311	else
	312	total_size += f->real_file_size;
	313	}
0a7eb121	314
7bb48f84 JA	315	/*
	316	* device/file sizes are zero and no size given, punt
	317	*/
	318	if (!total_size && !td->o.size) {
	319	log_err("%s: you need to specify size=\n", td->o.name);
e1161c32	320	td_verror(td, EINVAL, "total_file_size");
53cdc686 JA	321	return 1;
	322	}
	323
7bb48f84 JA	324	/*
	325	* now file sizes are known, so we can set ->io_size. if size= is
	326	* not given, ->io_size is just equal to ->real_file_size. if size
	327	* is given, ->io_size is size / nr_files.
	328	*/
	329	extend_size = total_size = 0;
	330	need_extend = 0;
	331	for_each_file(td, f, i) {
	332	if (!td->o.file_size_low) {
	333	/*
	334	* no file size range given, file size is equal to
	335	* total size divided by number of files. if that is
	336	* zero, set it to the real file size.
	337	*/
	338	f->io_size = td->o.size / td->o.nr_files;
	339	if (!f->io_size)
	340	f->io_size = f->real_file_size;
	341	} else if (f->real_file_size < td->o.file_size_low \|\|
	342	f->real_file_size > td->o.file_size_high) {
	343	/*
	344	* file size given. if it's fixed, use that. if it's a
	345	* range, generate a random size in-between.
	346	*/
	347	if (td->o.file_size_low == td->o.file_size_high)
	348	f->io_size = td->o.file_size_low;
	349	else
	350	f->io_size = get_rand_file_size(td);
	351	} else
	352	f->io_size = f->real_file_size;
53cdc686	353
7bb48f84 JA	354	if (f->io_size == -1ULL)
	355	total_size = -1ULL;
	356	else
	357	total_size += f->io_size;
	358
	359	if (f->filetype == FIO_TYPE_FILE &&
	360	f->io_size > f->real_file_size &&
	361	!(td->io_ops->flags & FIO_DISKLESSIO)) {
	362	need_extend++;
	363	extend_size += f->io_size;
	364	f->flags \|= FIO_FILE_EXTEND;
	365	}
	366	}
53cdc686	367
7bb48f84 JA	368	if (!td->o.size)
7bb48f84 JA	369	td->o.size = total_size;
21972cde	370
7bb48f84 JA	371	/*
	372	* See if we need to extend some files
	373	*/
	374	if (need_extend) {
	375	temp_stall_ts = 1;
	376	log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
	377	td->o.name, need_extend, extend_size >> 20);
	378
	379	for_each_file(td, f, i) {
	380	if (!(f->flags & FIO_FILE_EXTEND))
	381	continue;
	382
	383	f->flags &= ~FIO_FILE_EXTEND;
	384	f->real_file_size = f->io_size;
	385	err = extend_file(td, f);
	386	if (err)
	387	break;
	388	}
	389	temp_stall_ts = 0;
	390	}
	391
	392	if (err)
	393	return err;
	394
	395	if (!td->o.zone_size)
	396	td->o.zone_size = td->o.size;
	397
	398	td->total_io_size = td->o.size * td->o.loops;
	399	return 0;
53cdc686 JA	400	}
53cdc686 JA	401
68727076 JA	402	int init_random_map(struct thread_data *td)
	403	{
	404	int num_maps, blocks;
	405	struct fio_file *f;
	406	unsigned int i;
	407
	408	if (td->o.norandommap)
	409	return 0;
	410
	411	for_each_file(td, f, i) {
	412	blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
	413	num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
	414	f->file_map = malloc(num_maps * sizeof(long));
	415	if (!f->file_map) {
	416	log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
	417	return 1;
	418	}
	419	f->num_maps = num_maps;
	420	memset(f->file_map, 0, num_maps * sizeof(long));
	421	}
	422
	423	return 0;
	424	}
	425
53cdc686 JA	426	void close_files(struct thread_data *td)
53cdc686 JA	427	{
0ab8db89	428	struct fio_file *f;
af52b345	429	unsigned int i;
53cdc686	430
0ab8db89	431	for_each_file(td, f, i) {
fa1da865 JA	432	if ((f->flags & FIO_FILE_UNLINK) &&
fa1da865 JA	433	f->filetype == FIO_TYPE_FILE)
132ad46d	434	unlink(f->file_name);
bdb4e2e9	435
b5af8293	436	td_io_close_file(td, f);
b3dc7f07	437
fa1da865 JA	438	free(f->file_name);
	439	f->file_name = NULL;
	440
c343981b	441	if (f->file_map) {
b3dc7f07	442	free(f->file_map);
c343981b JA	443	f->file_map = NULL;
c343981b JA	444	}
53cdc686	445	}
b4a6a59a	446
2dc1bbeb	447	td->o.filename = NULL;
cade3ef4	448	free(td->files);
b4a6a59a	449	td->files = NULL;
2dc1bbeb	450	td->o.nr_files = 0;
53cdc686	451	}
af52b345	452
e3bab463	453	static void get_file_type(struct fio_file *f)
af52b345 JA	454	{
	455	struct stat sb;
	456
	457	f->filetype = FIO_TYPE_FILE;
	458
e3bab463	459	if (!lstat(f->file_name, &sb)) {
af52b345 JA	460	if (S_ISBLK(sb.st_mode))
	461	f->filetype = FIO_TYPE_BD;
	462	else if (S_ISCHR(sb.st_mode))
	463	f->filetype = FIO_TYPE_CHAR;
	464	}
	465	}
	466
	467	void add_file(struct thread_data td, const char fname)
	468	{
7b4e4fe5	469	int cur_files = td->files_index;
bd0ee748	470	char file_name[PATH_MAX];
af52b345	471	struct fio_file *f;
bd0ee748	472	int len = 0;
af52b345 JA	473
	474	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	475
	476	f = &td->files[cur_files];
	477	memset(f, 0, sizeof(*f));
	478	f->fd = -1;
bd0ee748 JA	479
	480	if (td->o.directory)
	481	len = sprintf(file_name, "%s/", td->o.directory);
	482
	483	sprintf(file_name + len, "%s", fname);
	484	f->file_name = strdup(file_name);
af52b345	485
e3bab463	486	get_file_type(f);
af52b345	487
7b4e4fe5	488	td->files_index++;
1549441c JA	489	if (f->filetype == FIO_TYPE_FILE)
1549441c JA	490	td->nr_normal_files++;
af52b345	491	}
0ad920e7 JA	492
	493	void get_file(struct fio_file *f)
	494	{
	495	f->references++;
	496	}
	497
	498	void put_file(struct thread_data td, struct fio_file f)
	499	{
	500	if (!(f->flags & FIO_FILE_OPEN))
	501	return;
	502
	503	assert(f->references);
	504	if (--f->references)
	505	return;
	506
2dc1bbeb	507	if (should_fsync(td) && td->o.fsync_on_close)
ebb1415f JA	508	fsync(f->fd);
ebb1415f JA	509
0ad920e7 JA	510	if (td->io_ops->close_file)
	511	td->io_ops->close_file(td, f);
	512	td->nr_open_files--;
	513	f->flags &= ~FIO_FILE_OPEN;
	514	}
bbf6b540 JA	515
	516	static int recurse_dir(struct thread_data td, const char dirname)
	517	{
	518	struct dirent *dir;
	519	int ret = 0;
	520	DIR *D;
	521
	522	D = opendir(dirname);
	523	if (!D) {
	524	td_verror(td, errno, "opendir");
	525	return 1;
	526	}
	527
	528	while ((dir = readdir(D)) != NULL) {
	529	char full_path[PATH_MAX];
	530	struct stat sb;
	531
e85b2b83 JA	532	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
e85b2b83 JA	533	continue;
96d32d51	534
bbf6b540 JA	535	sprintf(full_path, "%s/%s", dirname, dir->d_name);
	536
	537	if (lstat(full_path, &sb) == -1) {
	538	if (errno != ENOENT) {
	539	td_verror(td, errno, "stat");
	540	return 1;
	541	}
	542	}
	543
	544	if (S_ISREG(sb.st_mode)) {
	545	add_file(td, full_path);
2dc1bbeb	546	td->o.nr_files++;
bbf6b540 JA	547	continue;
	548	}
	549
bbf6b540 JA	550	if ((ret = recurse_dir(td, full_path)) != 0)
	551	break;
	552	}
	553
	554	closedir(D);
	555	return ret;
	556	}
	557
	558	int add_dir_files(struct thread_data td, const char path)
	559	{
	560	return recurse_dir(td, path);
	561	}
cade3ef4 JA	562
	563	void dup_files(struct thread_data td, struct thread_data org)
	564	{
	565	struct fio_file *f;
	566	unsigned int i;
	567	size_t bytes;
	568
	569	if (!org->files)
	570	return;
	571
	572	bytes = org->files_index * sizeof(*f);
	573	td->files = malloc(bytes);
	574	memcpy(td->files, org->files, bytes);
	575
	576	for_each_file(td, f, i) {
	577	if (f->file_name)
	578	f->file_name = strdup(f->file_name);
	579	}
	580	}