[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)
{
	unsigned long long left;
	unsigned int bs;
	char *b;
	int r;

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

	f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 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;
	}

	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);
	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;

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

	if (td->o.fadvise_hint) {
		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;
		}
	}

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

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

		td->io_ops->close_file(td, f);
	}

	return err;
}

/*
 * 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, 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
		err = 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 JA	14	{
	15	unsigned long long left;
	16	unsigned int bs;
	17	char *b;
	18	int r;
b2a15192	19
7bb48f84 JA	20	if (f->flags & FIO_FILE_EXISTS) {
	21	if (unlink(f->file_name) < 0) {
	22	td_verror(td, errno, "unlink");
	23	return 1;
	24	}
	25	}
	26
53cdc686 JA	27	f->fd = open(f->file_name, O_WRONLY \| O_CREAT \| O_TRUNC, 0644);
53cdc686 JA	28	if (f->fd < 0) {
e1161c32	29	td_verror(td, errno, "open");
53cdc686 JA	30	return 1;
	31	}
	32
7bb48f84	33	if (ftruncate(f->fd, f->real_file_size) == -1) {
e1161c32	34	td_verror(td, errno, "ftruncate");
53cdc686 JA	35	goto err;
	36	}
	37
7bb48f84	38	if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
e1161c32	39	td_verror(td, errno, "posix_fallocate");
40f8298c JA	40	goto err;
	41	}
	42
2dc1bbeb JA	43	b = malloc(td->o.max_bs[DDIR_WRITE]);
2dc1bbeb JA	44	memset(b, 0, td->o.max_bs[DDIR_WRITE]);
53cdc686	45
7bb48f84	46	left = f->real_file_size;
53cdc686	47	while (left && !td->terminate) {
2dc1bbeb	48	bs = td->o.max_bs[DDIR_WRITE];
53cdc686 JA	49	if (bs > left)
	50	bs = left;
	51
	52	r = write(f->fd, b, bs);
	53
	54	if (r == (int) bs) {
	55	left -= bs;
	56	continue;
	57	} else {
	58	if (r < 0)
e1161c32	59	td_verror(td, errno, "write");
53cdc686	60	else
e1161c32	61	td_verror(td, EIO, "write");
53cdc686 JA	62
	63	break;
	64	}
	65	}
	66
	67	if (td->terminate)
	68	unlink(f->file_name);
2dc1bbeb	69	else if (td->o.create_fsync)
53cdc686 JA	70	fsync(f->fd);
	71
	72	free(b);
	73	close(f->fd);
	74	f->fd = -1;
	75	return 0;
	76	err:
	77	close(f->fd);
	78	f->fd = -1;
	79	return 1;
	80	}
	81
7bb48f84	82	static unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64	83	{
9c60ce64 JA	84	unsigned long long ret;
	85	long r;
	86
9c60ce64	87	r = os_random_long(&td->file_size_state);
7bb48f84	88	ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0)));
2dc1bbeb	89	ret -= (ret % td->o.rw_min_bs);
9c60ce64 JA	90	return ret;
	91	}
	92
53cdc686 JA	93	static int file_size(struct thread_data td, struct fio_file f)
	94	{
	95	struct stat st;
	96
7bb48f84 JA	97	if (fstat(f->fd, &st) == -1) {
	98	td_verror(td, errno, "fstat");
	99	return 1;
	100	}
53cdc686	101
7bb48f84	102	f->real_file_size = st.st_size;
53cdc686 JA	103	return 0;
	104	}
	105
	106	static int bdev_size(struct thread_data td, struct fio_file f)
	107	{
	108	unsigned long long bytes;
	109	int r;
	110
	111	r = blockdev_size(f->fd, &bytes);
	112	if (r) {
e1161c32	113	td_verror(td, r, "blockdev_size");
53cdc686 JA	114	return 1;
	115	}
	116
	117	f->real_file_size = bytes;
53cdc686 JA	118	return 0;
	119	}
	120
	121	static int get_file_size(struct thread_data td, struct fio_file f)
	122	{
	123	int ret = 0;
	124
7bb48f84 JA	125	if (f->filetype == FIO_TYPE_FILE)
	126	ret = file_size(td, f);
	127	else if (f->filetype == FIO_TYPE_BD)
53cdc686 JA	128	ret = bdev_size(td, f);
	129	else
	130	f->real_file_size = -1;
	131
	132	if (ret)
	133	return ret;
	134
	135	if (f->file_offset > f->real_file_size) {
2dc1bbeb	136	log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
53cdc686 JA	137	return 1;
	138	}
	139
53cdc686 JA	140	return 0;
	141	}
	142
e5b401d4 JA	143	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	144	{
	145	int ret = 0;
	146
2dc1bbeb	147	if (td->o.odirect)
b5af8293 JA	148	return 0;
b5af8293 JA	149
e5b401d4 JA	150	/*
	151	* FIXME: add blockdev flushing too
	152	*/
b5af8293	153	if (f->mmap)
7bb48f84	154	ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
467d1b6b	155	else if (f->filetype == FIO_TYPE_FILE)
7bb48f84	156	ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
7e0e25c9	157	else if (f->filetype == FIO_TYPE_BD) {
b5af8293	158	ret = blockdev_invalidate_cache(f->fd);
7e0e25c9 JA	159	if (ret < 0 && errno == EACCES && geteuid()) {
	160	log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
	161	ret = 0;
	162	}
	163	} else if (f->filetype == FIO_TYPE_CHAR)
e5b401d4 JA	164	ret = 0;
	165
	166	if (ret < 0) {
e1161c32	167	td_verror(td, errno, "invalidate_cache");
e5b401d4 JA	168	return 1;
	169	}
	170
ad2da605	171	return ret;
e5b401d4 JA	172	}
e5b401d4 JA	173
b5af8293	174	void generic_close_file(struct thread_data fio_unused td, struct fio_file f)
53cdc686	175	{
b5af8293 JA	176	close(f->fd);
b5af8293 JA	177	f->fd = -1;
53cdc686 JA	178	}
53cdc686 JA	179
b5af8293	180	int generic_open_file(struct thread_data td, struct fio_file f)
53cdc686	181	{
53cdc686 JA	182	int flags = 0;
53cdc686 JA	183
2dc1bbeb	184	if (td->o.odirect)
2fd233b7	185	flags \|= OS_O_DIRECT;
2dc1bbeb	186	if (td->o.sync_io)
2fd233b7	187	flags \|= O_SYNC;
53cdc686	188
2fd233b7 JA	189	if (td_write(td) \|\| td_rw(td)) {
2fd233b7 JA	190	flags \|= O_RDWR;
53cdc686	191
af52b345	192	if (f->filetype == FIO_TYPE_FILE)
2fd233b7	193	flags \|= O_CREAT;
2fd233b7	194
b5af8293	195	f->fd = open(f->file_name, flags, 0600);
2fd233b7	196	} else {
af52b345	197	if (f->filetype == FIO_TYPE_CHAR)
2fd233b7 JA	198	flags \|= O_RDWR;
	199	else
	200	flags \|= O_RDONLY;
	201
b5af8293	202	f->fd = open(f->file_name, flags);
53cdc686 JA	203	}
	204
	205	if (f->fd == -1) {
e4e33258	206	char buf[FIO_VERROR_SIZE];
e1161c32 JA	207	int __e = errno;
e1161c32 JA	208
e4e33258 JA	209	snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
	210
	211	td_verror(td, __e, buf);
53cdc686 JA	212	}
53cdc686 JA	213
b5af8293 JA	214	if (get_file_size(td, f))
	215	goto err;
	216
2dc1bbeb	217	if (td->o.invalidate_cache && file_invalidate_cache(td, f))
b5af8293 JA	218	goto err;
b5af8293 JA	219
148cf6a9 JA	220	if (td->o.fadvise_hint) {
	221	if (td_random(td))
	222	flags = POSIX_FADV_RANDOM;
	223	else
	224	flags = POSIX_FADV_SEQUENTIAL;
d2f3ac35	225
7bb48f84	226	if (fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) {
b5af8293 JA	227	td_verror(td, errno, "fadvise");
	228	goto err;
	229	}
bdb4e2e9	230	}
53cdc686 JA	231
53cdc686 JA	232	return 0;
b5af8293 JA	233	err:
	234	close(f->fd);
	235	return 1;
	236	}
	237
21972cde JA	238	int open_files(struct thread_data *td)
	239	{
	240	struct fio_file *f;
af52b345 JA	241	unsigned int i;
af52b345 JA	242	int err = 0;
21972cde JA	243
21972cde JA	244	for_each_file(td, f, i) {
b5af8293	245	err = td_io_open_file(td, f);
21972cde JA	246	if (err)
21972cde JA	247	break;
b5af8293	248
2dc1bbeb	249	if (td->o.open_files == td->nr_open_files)
b5af8293	250	break;
21972cde JA	251	}
21972cde JA	252
7abf833d JA	253	if (!err)
	254	return 0;
	255
bdb4e2e9	256	for_each_file(td, f, i)
b5af8293	257	td_io_close_file(td, f);
7abf833d	258
21972cde JA	259	return err;
	260	}
	261
7bb48f84 JA	262	/*
	263	* open/close all files, so that ->real_file_size gets set
	264	*/
	265	static int get_file_sizes(struct thread_data *td)
	266	{
	267	struct fio_file *f;
	268	unsigned int i;
	269	int err = 0;
	270
	271	for_each_file(td, f, i) {
	272	err = td->io_ops->open_file(td, f);
	273	if (err) {
	274	td->error = 0;
	275	memset(td->verror, 0, sizeof(td->verror));
	276	err = 0;
	277	continue;
	278	}
	279
	280	td->io_ops->close_file(td, f);
	281	}
	282
	283	return err;
	284	}
	285
	286	/*
	287	* Open the files and setup files sizes, creating files if necessary.
	288	*/
53cdc686 JA	289	int setup_files(struct thread_data *td)
53cdc686 JA	290	{
7bb48f84	291	unsigned long long total_size, extend_size;
53cdc686	292	struct fio_file *f;
af52b345	293	unsigned int i;
7bb48f84	294	int err, need_extend;
53cdc686 JA	295
	296	/*
	297	* if ioengine defines a setup() method, it's responsible for
7bb48f84 JA	298	* opening the files and setting f->real_file_size to indicate
7bb48f84 JA	299	* the valid range for that file.
53cdc686 JA	300	*/
53cdc686 JA	301	if (td->io_ops->setup)
7bb48f84 JA	302	err = td->io_ops->setup(td);
	303	else
	304	err = get_file_sizes(td);
53cdc686	305
f1027063 JA	306	if (err)
	307	return err;
	308
0a7eb121	309	/*
7bb48f84 JA	310	* check sizes. if the files/devices do not exist and the size
7bb48f84 JA	311	* isn't passed to fio, abort.
0a7eb121	312	*/
7bb48f84 JA	313	total_size = 0;
	314	for_each_file(td, f, i) {
	315	if (f->real_file_size == -1ULL)
	316	total_size = -1ULL;
	317	else
	318	total_size += f->real_file_size;
	319	}
0a7eb121	320
7bb48f84 JA	321	/*
	322	* device/file sizes are zero and no size given, punt
	323	*/
	324	if (!total_size && !td->o.size) {
	325	log_err("%s: you need to specify size=\n", td->o.name);
e1161c32	326	td_verror(td, EINVAL, "total_file_size");
53cdc686 JA	327	return 1;
	328	}
	329
7bb48f84 JA	330	/*
	331	* now file sizes are known, so we can set ->io_size. if size= is
	332	* not given, ->io_size is just equal to ->real_file_size. if size
	333	* is given, ->io_size is size / nr_files.
	334	*/
	335	extend_size = total_size = 0;
	336	need_extend = 0;
	337	for_each_file(td, f, i) {
	338	if (!td->o.file_size_low) {
	339	/*
	340	* no file size range given, file size is equal to
	341	* total size divided by number of files. if that is
	342	* zero, set it to the real file size.
	343	*/
	344	f->io_size = td->o.size / td->o.nr_files;
	345	if (!f->io_size)
	346	f->io_size = f->real_file_size;
	347	} else if (f->real_file_size < td->o.file_size_low \|\|
	348	f->real_file_size > td->o.file_size_high) {
	349	/*
	350	* file size given. if it's fixed, use that. if it's a
	351	* range, generate a random size in-between.
	352	*/
	353	if (td->o.file_size_low == td->o.file_size_high)
	354	f->io_size = td->o.file_size_low;
	355	else
	356	f->io_size = get_rand_file_size(td);
	357	} else
	358	f->io_size = f->real_file_size;
53cdc686	359
7bb48f84 JA	360	if (f->io_size == -1ULL)
	361	total_size = -1ULL;
	362	else
	363	total_size += f->io_size;
	364
	365	if (f->filetype == FIO_TYPE_FILE &&
	366	f->io_size > f->real_file_size &&
	367	!(td->io_ops->flags & FIO_DISKLESSIO)) {
	368	need_extend++;
	369	extend_size += f->io_size;
	370	f->flags \|= FIO_FILE_EXTEND;
	371	}
	372	}
53cdc686	373
7bb48f84 JA	374	if (!td->o.size)
7bb48f84 JA	375	td->o.size = total_size;
21972cde	376
7bb48f84 JA	377	/*
	378	* See if we need to extend some files
	379	*/
	380	if (need_extend) {
	381	temp_stall_ts = 1;
	382	log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
	383	td->o.name, need_extend, extend_size >> 20);
	384
	385	for_each_file(td, f, i) {
	386	if (!(f->flags & FIO_FILE_EXTEND))
	387	continue;
	388
	389	f->flags &= ~FIO_FILE_EXTEND;
	390	f->real_file_size = f->io_size;
	391	err = extend_file(td, f);
	392	if (err)
	393	break;
	394	}
	395	temp_stall_ts = 0;
	396	}
	397
	398	if (err)
	399	return err;
	400
	401	if (!td->o.zone_size)
	402	td->o.zone_size = td->o.size;
	403
	404	td->total_io_size = td->o.size * td->o.loops;
	405	return 0;
53cdc686 JA	406	}
53cdc686 JA	407
68727076 JA	408	int init_random_map(struct thread_data *td)
	409	{
	410	int num_maps, blocks;
	411	struct fio_file *f;
	412	unsigned int i;
	413
	414	if (td->o.norandommap)
	415	return 0;
	416
	417	for_each_file(td, f, i) {
	418	blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
	419	num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
	420	f->file_map = malloc(num_maps * sizeof(long));
	421	if (!f->file_map) {
	422	log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
	423	return 1;
	424	}
	425	f->num_maps = num_maps;
	426	memset(f->file_map, 0, num_maps * sizeof(long));
	427	}
	428
	429	return 0;
	430	}
	431
53cdc686 JA	432	void close_files(struct thread_data *td)
53cdc686 JA	433	{
0ab8db89	434	struct fio_file *f;
af52b345	435	unsigned int i;
53cdc686	436
0ab8db89	437	for_each_file(td, f, i) {
fa1da865 JA	438	if ((f->flags & FIO_FILE_UNLINK) &&
fa1da865 JA	439	f->filetype == FIO_TYPE_FILE)
132ad46d	440	unlink(f->file_name);
bdb4e2e9	441
b5af8293	442	td_io_close_file(td, f);
b3dc7f07	443
fa1da865 JA	444	free(f->file_name);
	445	f->file_name = NULL;
	446
c343981b	447	if (f->file_map) {
b3dc7f07	448	free(f->file_map);
c343981b JA	449	f->file_map = NULL;
c343981b JA	450	}
53cdc686	451	}
b4a6a59a	452
2dc1bbeb	453	td->o.filename = NULL;
cade3ef4	454	free(td->files);
b4a6a59a	455	td->files = NULL;
2dc1bbeb	456	td->o.nr_files = 0;
53cdc686	457	}
af52b345	458
e3bab463	459	static void get_file_type(struct fio_file *f)
af52b345 JA	460	{
	461	struct stat sb;
	462
	463	f->filetype = FIO_TYPE_FILE;
	464
e3bab463	465	if (!lstat(f->file_name, &sb)) {
af52b345 JA	466	if (S_ISBLK(sb.st_mode))
	467	f->filetype = FIO_TYPE_BD;
	468	else if (S_ISCHR(sb.st_mode))
	469	f->filetype = FIO_TYPE_CHAR;
	470	}
	471	}
	472
	473	void add_file(struct thread_data td, const char fname)
	474	{
7b4e4fe5	475	int cur_files = td->files_index;
bd0ee748	476	char file_name[PATH_MAX];
af52b345	477	struct fio_file *f;
bd0ee748	478	int len = 0;
af52b345 JA	479
	480	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	481
	482	f = &td->files[cur_files];
	483	memset(f, 0, sizeof(*f));
	484	f->fd = -1;
bd0ee748 JA	485
	486	if (td->o.directory)
	487	len = sprintf(file_name, "%s/", td->o.directory);
	488
	489	sprintf(file_name + len, "%s", fname);
	490	f->file_name = strdup(file_name);
af52b345	491
e3bab463	492	get_file_type(f);
af52b345	493
7b4e4fe5	494	td->files_index++;
1549441c JA	495	if (f->filetype == FIO_TYPE_FILE)
1549441c JA	496	td->nr_normal_files++;
af52b345	497	}
0ad920e7 JA	498
	499	void get_file(struct fio_file *f)
	500	{
	501	f->references++;
	502	}
	503
	504	void put_file(struct thread_data td, struct fio_file f)
	505	{
	506	if (!(f->flags & FIO_FILE_OPEN))
	507	return;
	508
	509	assert(f->references);
	510	if (--f->references)
	511	return;
	512
2dc1bbeb	513	if (should_fsync(td) && td->o.fsync_on_close)
ebb1415f JA	514	fsync(f->fd);
ebb1415f JA	515
0ad920e7 JA	516	if (td->io_ops->close_file)
	517	td->io_ops->close_file(td, f);
	518	td->nr_open_files--;
	519	f->flags &= ~FIO_FILE_OPEN;
	520	}
bbf6b540 JA	521
	522	static int recurse_dir(struct thread_data td, const char dirname)
	523	{
	524	struct dirent *dir;
	525	int ret = 0;
	526	DIR *D;
	527
	528	D = opendir(dirname);
	529	if (!D) {
	530	td_verror(td, errno, "opendir");
	531	return 1;
	532	}
	533
	534	while ((dir = readdir(D)) != NULL) {
	535	char full_path[PATH_MAX];
	536	struct stat sb;
	537
e85b2b83 JA	538	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
e85b2b83 JA	539	continue;
96d32d51	540
bbf6b540 JA	541	sprintf(full_path, "%s/%s", dirname, dir->d_name);
	542
	543	if (lstat(full_path, &sb) == -1) {
	544	if (errno != ENOENT) {
	545	td_verror(td, errno, "stat");
	546	return 1;
	547	}
	548	}
	549
	550	if (S_ISREG(sb.st_mode)) {
	551	add_file(td, full_path);
2dc1bbeb	552	td->o.nr_files++;
bbf6b540 JA	553	continue;
	554	}
	555
bbf6b540 JA	556	if ((ret = recurse_dir(td, full_path)) != 0)
	557	break;
	558	}
	559
	560	closedir(D);
	561	return ret;
	562	}
	563
	564	int add_dir_files(struct thread_data td, const char path)
	565	{
	566	return recurse_dir(td, path);
	567	}
cade3ef4 JA	568
	569	void dup_files(struct thread_data td, struct thread_data org)
	570	{
	571	struct fio_file *f;
	572	unsigned int i;
	573	size_t bytes;
	574
	575	if (!org->files)
	576	return;
	577
	578	bytes = org->files_index * sizeof(*f);
	579	td->files = malloc(bytes);
	580	memcpy(td->files, org->files, bytes);
	581
	582	for_each_file(td, f, i) {
	583	if (f->file_name)
	584	f->file_name = strdup(f->file_name);
	585	}
	586	}