[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->flags & FIO_SIZE_KNOWN)
		return 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;
	}

	f->flags |= FIO_SIZE_KNOWN;
	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) {
			if (td->error == EMFILE) {
				log_err("fio: limited open files to: %d\n", td->nr_open_files);
				td->o.open_files = td->nr_open_files;
				err = 0;
				clear_error(td);
			}
			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))
			clear_error(td);
		else
			td->io_ops->close_file(td, f);

		if (f->real_file_size == -1ULL && td->o.size)
			f->real_file_size = td->o.size / td->o.nr_files;
	}
}

/*
 * 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 || total_size == -1ULL) && !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;

			assert(f->filetype == FIO_TYPE_FILE);
			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) {
		char buf[FIO_VERROR_SIZE];

		snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
		td_verror(td, errno, buf);
		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 (!S_ISDIR(sb.st_mode))
			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)
{
	int ret = recurse_dir(td, path);

	if (!ret)
		log_info("fio: opendir added %d files\n", td->o.nr_files);

	return ret;
}

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
409b3417 JA	141	if (f->flags & FIO_SIZE_KNOWN)
	142	return 0;
	143
7bb48f84 JA	144	if (f->filetype == FIO_TYPE_FILE)
	145	ret = file_size(td, f);
	146	else if (f->filetype == FIO_TYPE_BD)
53cdc686 JA	147	ret = bdev_size(td, f);
	148	else
	149	f->real_file_size = -1;
	150
	151	if (ret)
	152	return ret;
	153
	154	if (f->file_offset > f->real_file_size) {
2dc1bbeb	155	log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
53cdc686 JA	156	return 1;
	157	}
	158
409b3417	159	f->flags \|= FIO_SIZE_KNOWN;
53cdc686 JA	160	return 0;
	161	}
	162
e5b401d4 JA	163	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	164	{
	165	int ret = 0;
	166
2dc1bbeb	167	if (td->o.odirect)
b5af8293 JA	168	return 0;
b5af8293 JA	169
e5b401d4 JA	170	/*
	171	* FIXME: add blockdev flushing too
	172	*/
b5af8293	173	if (f->mmap)
7bb48f84	174	ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
467d1b6b	175	else if (f->filetype == FIO_TYPE_FILE)
7bb48f84	176	ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
7e0e25c9	177	else if (f->filetype == FIO_TYPE_BD) {
b5af8293	178	ret = blockdev_invalidate_cache(f->fd);
7e0e25c9 JA	179	if (ret < 0 && errno == EACCES && geteuid()) {
	180	log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
	181	ret = 0;
	182	}
	183	} else if (f->filetype == FIO_TYPE_CHAR)
e5b401d4 JA	184	ret = 0;
	185
	186	if (ret < 0) {
e1161c32	187	td_verror(td, errno, "invalidate_cache");
e5b401d4 JA	188	return 1;
	189	}
	190
ad2da605	191	return ret;
e5b401d4 JA	192	}
e5b401d4 JA	193
b5af8293	194	void generic_close_file(struct thread_data fio_unused td, struct fio_file f)
53cdc686	195	{
b5af8293 JA	196	close(f->fd);
b5af8293 JA	197	f->fd = -1;
53cdc686 JA	198	}
53cdc686 JA	199
b5af8293	200	int generic_open_file(struct thread_data td, struct fio_file f)
53cdc686	201	{
53cdc686 JA	202	int flags = 0;
53cdc686 JA	203
2dc1bbeb	204	if (td->o.odirect)
2fd233b7	205	flags \|= OS_O_DIRECT;
2dc1bbeb	206	if (td->o.sync_io)
2fd233b7	207	flags \|= O_SYNC;
53cdc686	208
2fd233b7 JA	209	if (td_write(td) \|\| td_rw(td)) {
2fd233b7 JA	210	flags \|= O_RDWR;
53cdc686	211
af52b345	212	if (f->filetype == FIO_TYPE_FILE)
2fd233b7	213	flags \|= O_CREAT;
2fd233b7	214
b5af8293	215	f->fd = open(f->file_name, flags, 0600);
2fd233b7	216	} else {
af52b345	217	if (f->filetype == FIO_TYPE_CHAR)
2fd233b7 JA	218	flags \|= O_RDWR;
	219	else
	220	flags \|= O_RDONLY;
	221
b5af8293	222	f->fd = open(f->file_name, flags);
53cdc686 JA	223	}
	224
	225	if (f->fd == -1) {
e4e33258	226	char buf[FIO_VERROR_SIZE];
e1161c32 JA	227	int __e = errno;
e1161c32 JA	228
e4e33258 JA	229	snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
	230
	231	td_verror(td, __e, buf);
53cdc686 JA	232	}
53cdc686 JA	233
b5af8293 JA	234	if (get_file_size(td, f))
	235	goto err;
	236
53cdc686	237	return 0;
b5af8293 JA	238	err:
	239	close(f->fd);
	240	return 1;
	241	}
	242
21972cde JA	243	int open_files(struct thread_data *td)
	244	{
	245	struct fio_file *f;
af52b345 JA	246	unsigned int i;
af52b345 JA	247	int err = 0;
21972cde JA	248
21972cde JA	249	for_each_file(td, f, i) {
b5af8293	250	err = td_io_open_file(td, f);
9bf27b45 JA	251	if (err) {
	252	if (td->error == EMFILE) {
	253	log_err("fio: limited open files to: %d\n", td->nr_open_files);
	254	td->o.open_files = td->nr_open_files;
	255	err = 0;
	256	clear_error(td);
	257	}
21972cde	258	break;
9bf27b45	259	}
b5af8293	260
2dc1bbeb	261	if (td->o.open_files == td->nr_open_files)
b5af8293	262	break;
21972cde JA	263	}
21972cde JA	264
7abf833d JA	265	if (!err)
	266	return 0;
	267
bdb4e2e9	268	for_each_file(td, f, i)
b5af8293	269	td_io_close_file(td, f);
7abf833d	270
21972cde JA	271	return err;
	272	}
	273
7bb48f84 JA	274	/*
	275	* open/close all files, so that ->real_file_size gets set
	276	*/
000b0803	277	static void get_file_sizes(struct thread_data *td)
7bb48f84 JA	278	{
	279	struct fio_file *f;
	280	unsigned int i;
7bb48f84 JA	281
7bb48f84 JA	282	for_each_file(td, f, i) {
541d66d7 JA	283	if (td->io_ops->open_file(td, f))
	284	clear_error(td);
	285	else
000b0803	286	td->io_ops->close_file(td, f);
409b3417 JA	287
	288	if (f->real_file_size == -1ULL && td->o.size)
	289	f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84	290	}
7bb48f84 JA	291	}
	292
	293	/*
	294	* Open the files and setup files sizes, creating files if necessary.
	295	*/
53cdc686 JA	296	int setup_files(struct thread_data *td)
53cdc686 JA	297	{
7bb48f84	298	unsigned long long total_size, extend_size;
53cdc686	299	struct fio_file *f;
af52b345	300	unsigned int i;
000b0803	301	int err = 0, need_extend;
53cdc686 JA	302
	303	/*
	304	* if ioengine defines a setup() method, it's responsible for
7bb48f84 JA	305	* opening the files and setting f->real_file_size to indicate
7bb48f84 JA	306	* the valid range for that file.
53cdc686 JA	307	*/
53cdc686 JA	308	if (td->io_ops->setup)
7bb48f84 JA	309	err = td->io_ops->setup(td);
7bb48f84 JA	310	else
000b0803	311	get_file_sizes(td);
53cdc686	312
f1027063 JA	313	if (err)
	314	return err;
	315
0a7eb121	316	/*
7bb48f84 JA	317	* check sizes. if the files/devices do not exist and the size
7bb48f84 JA	318	* isn't passed to fio, abort.
0a7eb121	319	*/
7bb48f84 JA	320	total_size = 0;
	321	for_each_file(td, f, i) {
	322	if (f->real_file_size == -1ULL)
	323	total_size = -1ULL;
	324	else
	325	total_size += f->real_file_size;
	326	}
0a7eb121	327
7bb48f84 JA	328	/*
	329	* device/file sizes are zero and no size given, punt
	330	*/
409b3417	331	if ((!total_size \|\| total_size == -1ULL) && !td->o.size) {
7bb48f84	332	log_err("%s: you need to specify size=\n", td->o.name);
e1161c32	333	td_verror(td, EINVAL, "total_file_size");
53cdc686 JA	334	return 1;
	335	}
	336
7bb48f84 JA	337	/*
	338	* now file sizes are known, so we can set ->io_size. if size= is
	339	* not given, ->io_size is just equal to ->real_file_size. if size
	340	* is given, ->io_size is size / nr_files.
	341	*/
	342	extend_size = total_size = 0;
	343	need_extend = 0;
	344	for_each_file(td, f, i) {
	345	if (!td->o.file_size_low) {
	346	/*
	347	* no file size range given, file size is equal to
	348	* total size divided by number of files. if that is
	349	* zero, set it to the real file size.
	350	*/
	351	f->io_size = td->o.size / td->o.nr_files;
	352	if (!f->io_size)
	353	f->io_size = f->real_file_size;
	354	} else if (f->real_file_size < td->o.file_size_low \|\|
	355	f->real_file_size > td->o.file_size_high) {
	356	/*
	357	* file size given. if it's fixed, use that. if it's a
	358	* range, generate a random size in-between.
	359	*/
	360	if (td->o.file_size_low == td->o.file_size_high)
	361	f->io_size = td->o.file_size_low;
	362	else
	363	f->io_size = get_rand_file_size(td);
	364	} else
	365	f->io_size = f->real_file_size;
53cdc686	366
7bb48f84 JA	367	if (f->io_size == -1ULL)
	368	total_size = -1ULL;
	369	else
	370	total_size += f->io_size;
	371
	372	if (f->filetype == FIO_TYPE_FILE &&
	373	f->io_size > f->real_file_size &&
	374	!(td->io_ops->flags & FIO_DISKLESSIO)) {
	375	need_extend++;
	376	extend_size += f->io_size;
	377	f->flags \|= FIO_FILE_EXTEND;
	378	}
	379	}
53cdc686	380
7bb48f84 JA	381	if (!td->o.size)
7bb48f84 JA	382	td->o.size = total_size;
21972cde	383
7bb48f84 JA	384	/*
	385	* See if we need to extend some files
	386	*/
	387	if (need_extend) {
	388	temp_stall_ts = 1;
	389	log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
	390	td->o.name, need_extend, extend_size >> 20);
	391
	392	for_each_file(td, f, i) {
	393	if (!(f->flags & FIO_FILE_EXTEND))
	394	continue;
	395
409b3417	396	assert(f->filetype == FIO_TYPE_FILE);
7bb48f84 JA	397	f->flags &= ~FIO_FILE_EXTEND;
	398	f->real_file_size = f->io_size;
	399	err = extend_file(td, f);
	400	if (err)
	401	break;
	402	}
	403	temp_stall_ts = 0;
	404	}
	405
	406	if (err)
	407	return err;
	408
	409	if (!td->o.zone_size)
	410	td->o.zone_size = td->o.size;
	411
	412	td->total_io_size = td->o.size * td->o.loops;
	413	return 0;
53cdc686 JA	414	}
53cdc686 JA	415
68727076 JA	416	int init_random_map(struct thread_data *td)
	417	{
	418	int num_maps, blocks;
	419	struct fio_file *f;
	420	unsigned int i;
	421
	422	if (td->o.norandommap)
	423	return 0;
	424
	425	for_each_file(td, f, i) {
	426	blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
	427	num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
	428	f->file_map = malloc(num_maps * sizeof(long));
	429	if (!f->file_map) {
	430	log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
	431	return 1;
	432	}
	433	f->num_maps = num_maps;
	434	memset(f->file_map, 0, num_maps * sizeof(long));
	435	}
	436
	437	return 0;
	438	}
	439
53cdc686 JA	440	void close_files(struct thread_data *td)
53cdc686 JA	441	{
0ab8db89	442	struct fio_file *f;
af52b345	443	unsigned int i;
53cdc686	444
0ab8db89	445	for_each_file(td, f, i) {
fa1da865 JA	446	if ((f->flags & FIO_FILE_UNLINK) &&
fa1da865 JA	447	f->filetype == FIO_TYPE_FILE)
132ad46d	448	unlink(f->file_name);
bdb4e2e9	449
b5af8293	450	td_io_close_file(td, f);
b3dc7f07	451
fa1da865 JA	452	free(f->file_name);
	453	f->file_name = NULL;
	454
c343981b	455	if (f->file_map) {
b3dc7f07	456	free(f->file_map);
c343981b JA	457	f->file_map = NULL;
c343981b JA	458	}
53cdc686	459	}
b4a6a59a	460
2dc1bbeb	461	td->o.filename = NULL;
cade3ef4	462	free(td->files);
b4a6a59a	463	td->files = NULL;
2dc1bbeb	464	td->o.nr_files = 0;
53cdc686	465	}
af52b345	466
e3bab463	467	static void get_file_type(struct fio_file *f)
af52b345 JA	468	{
	469	struct stat sb;
	470
	471	f->filetype = FIO_TYPE_FILE;
	472
e3bab463	473	if (!lstat(f->file_name, &sb)) {
af52b345 JA	474	if (S_ISBLK(sb.st_mode))
	475	f->filetype = FIO_TYPE_BD;
	476	else if (S_ISCHR(sb.st_mode))
	477	f->filetype = FIO_TYPE_CHAR;
	478	}
	479	}
	480
	481	void add_file(struct thread_data td, const char fname)
	482	{
7b4e4fe5	483	int cur_files = td->files_index;
bd0ee748	484	char file_name[PATH_MAX];
af52b345	485	struct fio_file *f;
bd0ee748	486	int len = 0;
af52b345 JA	487
	488	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	489
	490	f = &td->files[cur_files];
	491	memset(f, 0, sizeof(*f));
	492	f->fd = -1;
bd0ee748 JA	493
	494	if (td->o.directory)
	495	len = sprintf(file_name, "%s/", td->o.directory);
	496
	497	sprintf(file_name + len, "%s", fname);
	498	f->file_name = strdup(file_name);
af52b345	499
e3bab463	500	get_file_type(f);
af52b345	501
7b4e4fe5	502	td->files_index++;
1549441c JA	503	if (f->filetype == FIO_TYPE_FILE)
1549441c JA	504	td->nr_normal_files++;
af52b345	505	}
0ad920e7 JA	506
	507	void get_file(struct fio_file *f)
	508	{
	509	f->references++;
	510	}
	511
	512	void put_file(struct thread_data td, struct fio_file f)
	513	{
	514	if (!(f->flags & FIO_FILE_OPEN))
	515	return;
	516
	517	assert(f->references);
	518	if (--f->references)
	519	return;
	520
2dc1bbeb	521	if (should_fsync(td) && td->o.fsync_on_close)
ebb1415f JA	522	fsync(f->fd);
ebb1415f JA	523
0ad920e7 JA	524	if (td->io_ops->close_file)
	525	td->io_ops->close_file(td, f);
	526	td->nr_open_files--;
	527	f->flags &= ~FIO_FILE_OPEN;
	528	}
bbf6b540 JA	529
	530	static int recurse_dir(struct thread_data td, const char dirname)
	531	{
	532	struct dirent *dir;
	533	int ret = 0;
	534	DIR *D;
	535
	536	D = opendir(dirname);
	537	if (!D) {
0ddb270c JA	538	char buf[FIO_VERROR_SIZE];
	539
	540	snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
	541	td_verror(td, errno, buf);
bbf6b540 JA	542	return 1;
	543	}
	544
	545	while ((dir = readdir(D)) != NULL) {
	546	char full_path[PATH_MAX];
	547	struct stat sb;
	548
e85b2b83 JA	549	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
e85b2b83 JA	550	continue;
96d32d51	551
bbf6b540 JA	552	sprintf(full_path, "%s/%s", dirname, dir->d_name);
	553
	554	if (lstat(full_path, &sb) == -1) {
	555	if (errno != ENOENT) {
	556	td_verror(td, errno, "stat");
	557	return 1;
	558	}
	559	}
	560
	561	if (S_ISREG(sb.st_mode)) {
	562	add_file(td, full_path);
2dc1bbeb	563	td->o.nr_files++;
bbf6b540 JA	564	continue;
bbf6b540 JA	565	}
0ddb270c JA	566	if (!S_ISDIR(sb.st_mode))
0ddb270c JA	567	continue;
bbf6b540	568
bbf6b540 JA	569	if ((ret = recurse_dir(td, full_path)) != 0)
	570	break;
	571	}
	572
	573	closedir(D);
	574	return ret;
	575	}
	576
	577	int add_dir_files(struct thread_data td, const char path)
	578	{
0ddb270c JA	579	int ret = recurse_dir(td, path);
	580
	581	if (!ret)
	582	log_info("fio: opendir added %d files\n", td->o.nr_files);
	583
	584	return ret;
bbf6b540	585	}
cade3ef4 JA	586
	587	void dup_files(struct thread_data td, struct thread_data org)
	588	{
	589	struct fio_file *f;
	590	unsigned int i;
	591	size_t bytes;
	592
	593	if (!org->files)
	594	return;
	595
	596	bytes = org->files_index * sizeof(*f);
	597	td->files = malloc(bytes);
	598	memcpy(td->files, org->files, bytes);
	599
	600	for_each_file(td, f, i) {
	601	if (f->file_name)
	602	f->file_name = strdup(f->file_name);
	603	}
	604	}