[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;

	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
53cdc686	217	return 0;
b5af8293 JA	218	err:
	219	close(f->fd);
	220	return 1;
	221	}
	222
21972cde JA	223	int open_files(struct thread_data *td)
	224	{
	225	struct fio_file *f;
af52b345 JA	226	unsigned int i;
af52b345 JA	227	int err = 0;
21972cde JA	228
21972cde JA	229	for_each_file(td, f, i) {
b5af8293	230	err = td_io_open_file(td, f);
21972cde JA	231	if (err)
21972cde JA	232	break;
b5af8293	233
2dc1bbeb	234	if (td->o.open_files == td->nr_open_files)
b5af8293	235	break;
21972cde JA	236	}
21972cde JA	237
7abf833d JA	238	if (!err)
	239	return 0;
	240
bdb4e2e9	241	for_each_file(td, f, i)
b5af8293	242	td_io_close_file(td, f);
7abf833d	243
21972cde JA	244	return err;
	245	}
	246
7bb48f84 JA	247	/*
	248	* open/close all files, so that ->real_file_size gets set
	249	*/
	250	static int get_file_sizes(struct thread_data *td)
	251	{
	252	struct fio_file *f;
	253	unsigned int i;
	254	int err = 0;
	255
	256	for_each_file(td, f, i) {
	257	err = td->io_ops->open_file(td, f);
	258	if (err) {
	259	td->error = 0;
	260	memset(td->verror, 0, sizeof(td->verror));
	261	err = 0;
	262	continue;
	263	}
	264
	265	td->io_ops->close_file(td, f);
	266	}
	267
	268	return err;
	269	}
	270
	271	/*
	272	* Open the files and setup files sizes, creating files if necessary.
	273	*/
53cdc686 JA	274	int setup_files(struct thread_data *td)
53cdc686 JA	275	{
7bb48f84	276	unsigned long long total_size, extend_size;
53cdc686	277	struct fio_file *f;
af52b345	278	unsigned int i;
7bb48f84	279	int err, need_extend;
53cdc686 JA	280
	281	/*
	282	* if ioengine defines a setup() method, it's responsible for
7bb48f84 JA	283	* opening the files and setting f->real_file_size to indicate
7bb48f84 JA	284	* the valid range for that file.
53cdc686 JA	285	*/
53cdc686 JA	286	if (td->io_ops->setup)
7bb48f84 JA	287	err = td->io_ops->setup(td);
	288	else
	289	err = get_file_sizes(td);
53cdc686	290
f1027063 JA	291	if (err)
	292	return err;
	293
0a7eb121	294	/*
7bb48f84 JA	295	* check sizes. if the files/devices do not exist and the size
7bb48f84 JA	296	* isn't passed to fio, abort.
0a7eb121	297	*/
7bb48f84 JA	298	total_size = 0;
	299	for_each_file(td, f, i) {
	300	if (f->real_file_size == -1ULL)
	301	total_size = -1ULL;
	302	else
	303	total_size += f->real_file_size;
	304	}
0a7eb121	305
7bb48f84 JA	306	/*
	307	* device/file sizes are zero and no size given, punt
	308	*/
	309	if (!total_size && !td->o.size) {
	310	log_err("%s: you need to specify size=\n", td->o.name);
e1161c32	311	td_verror(td, EINVAL, "total_file_size");
53cdc686 JA	312	return 1;
	313	}
	314
7bb48f84 JA	315	/*
	316	* now file sizes are known, so we can set ->io_size. if size= is
	317	* not given, ->io_size is just equal to ->real_file_size. if size
	318	* is given, ->io_size is size / nr_files.
	319	*/
	320	extend_size = total_size = 0;
	321	need_extend = 0;
	322	for_each_file(td, f, i) {
	323	if (!td->o.file_size_low) {
	324	/*
	325	* no file size range given, file size is equal to
	326	* total size divided by number of files. if that is
	327	* zero, set it to the real file size.
	328	*/
	329	f->io_size = td->o.size / td->o.nr_files;
	330	if (!f->io_size)
	331	f->io_size = f->real_file_size;
	332	} else if (f->real_file_size < td->o.file_size_low \|\|
	333	f->real_file_size > td->o.file_size_high) {
	334	/*
	335	* file size given. if it's fixed, use that. if it's a
	336	* range, generate a random size in-between.
	337	*/
	338	if (td->o.file_size_low == td->o.file_size_high)
	339	f->io_size = td->o.file_size_low;
	340	else
	341	f->io_size = get_rand_file_size(td);
	342	} else
	343	f->io_size = f->real_file_size;
53cdc686	344
7bb48f84 JA	345	if (f->io_size == -1ULL)
	346	total_size = -1ULL;
	347	else
	348	total_size += f->io_size;
	349
	350	if (f->filetype == FIO_TYPE_FILE &&
	351	f->io_size > f->real_file_size &&
	352	!(td->io_ops->flags & FIO_DISKLESSIO)) {
	353	need_extend++;
	354	extend_size += f->io_size;
	355	f->flags \|= FIO_FILE_EXTEND;
	356	}
	357	}
53cdc686	358
7bb48f84 JA	359	if (!td->o.size)
7bb48f84 JA	360	td->o.size = total_size;
21972cde	361
7bb48f84 JA	362	/*
	363	* See if we need to extend some files
	364	*/
	365	if (need_extend) {
	366	temp_stall_ts = 1;
	367	log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
	368	td->o.name, need_extend, extend_size >> 20);
	369
	370	for_each_file(td, f, i) {
	371	if (!(f->flags & FIO_FILE_EXTEND))
	372	continue;
	373
	374	f->flags &= ~FIO_FILE_EXTEND;
	375	f->real_file_size = f->io_size;
	376	err = extend_file(td, f);
	377	if (err)
	378	break;
	379	}
	380	temp_stall_ts = 0;
	381	}
	382
	383	if (err)
	384	return err;
	385
	386	if (!td->o.zone_size)
	387	td->o.zone_size = td->o.size;
	388
	389	td->total_io_size = td->o.size * td->o.loops;
	390	return 0;
53cdc686 JA	391	}
53cdc686 JA	392
68727076 JA	393	int init_random_map(struct thread_data *td)
	394	{
	395	int num_maps, blocks;
	396	struct fio_file *f;
	397	unsigned int i;
	398
	399	if (td->o.norandommap)
	400	return 0;
	401
	402	for_each_file(td, f, i) {
	403	blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
	404	num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
	405	f->file_map = malloc(num_maps * sizeof(long));
	406	if (!f->file_map) {
	407	log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
	408	return 1;
	409	}
	410	f->num_maps = num_maps;
	411	memset(f->file_map, 0, num_maps * sizeof(long));
	412	}
	413
	414	return 0;
	415	}
	416
53cdc686 JA	417	void close_files(struct thread_data *td)
53cdc686 JA	418	{
0ab8db89	419	struct fio_file *f;
af52b345	420	unsigned int i;
53cdc686	421
0ab8db89	422	for_each_file(td, f, i) {
fa1da865 JA	423	if ((f->flags & FIO_FILE_UNLINK) &&
fa1da865 JA	424	f->filetype == FIO_TYPE_FILE)
132ad46d	425	unlink(f->file_name);
bdb4e2e9	426
b5af8293	427	td_io_close_file(td, f);
b3dc7f07	428
fa1da865 JA	429	free(f->file_name);
	430	f->file_name = NULL;
	431
c343981b	432	if (f->file_map) {
b3dc7f07	433	free(f->file_map);
c343981b JA	434	f->file_map = NULL;
c343981b JA	435	}
53cdc686	436	}
b4a6a59a	437
2dc1bbeb	438	td->o.filename = NULL;
cade3ef4	439	free(td->files);
b4a6a59a	440	td->files = NULL;
2dc1bbeb	441	td->o.nr_files = 0;
53cdc686	442	}
af52b345	443
e3bab463	444	static void get_file_type(struct fio_file *f)
af52b345 JA	445	{
	446	struct stat sb;
	447
	448	f->filetype = FIO_TYPE_FILE;
	449
e3bab463	450	if (!lstat(f->file_name, &sb)) {
af52b345 JA	451	if (S_ISBLK(sb.st_mode))
	452	f->filetype = FIO_TYPE_BD;
	453	else if (S_ISCHR(sb.st_mode))
	454	f->filetype = FIO_TYPE_CHAR;
	455	}
	456	}
	457
	458	void add_file(struct thread_data td, const char fname)
	459	{
7b4e4fe5	460	int cur_files = td->files_index;
bd0ee748	461	char file_name[PATH_MAX];
af52b345	462	struct fio_file *f;
bd0ee748	463	int len = 0;
af52b345 JA	464
	465	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	466
	467	f = &td->files[cur_files];
	468	memset(f, 0, sizeof(*f));
	469	f->fd = -1;
bd0ee748 JA	470
	471	if (td->o.directory)
	472	len = sprintf(file_name, "%s/", td->o.directory);
	473
	474	sprintf(file_name + len, "%s", fname);
	475	f->file_name = strdup(file_name);
af52b345	476
e3bab463	477	get_file_type(f);
af52b345	478
7b4e4fe5	479	td->files_index++;
1549441c JA	480	if (f->filetype == FIO_TYPE_FILE)
1549441c JA	481	td->nr_normal_files++;
af52b345	482	}
0ad920e7 JA	483
	484	void get_file(struct fio_file *f)
	485	{
	486	f->references++;
	487	}
	488
	489	void put_file(struct thread_data td, struct fio_file f)
	490	{
	491	if (!(f->flags & FIO_FILE_OPEN))
	492	return;
	493
	494	assert(f->references);
	495	if (--f->references)
	496	return;
	497
2dc1bbeb	498	if (should_fsync(td) && td->o.fsync_on_close)
ebb1415f JA	499	fsync(f->fd);
ebb1415f JA	500
0ad920e7 JA	501	if (td->io_ops->close_file)
	502	td->io_ops->close_file(td, f);
	503	td->nr_open_files--;
	504	f->flags &= ~FIO_FILE_OPEN;
	505	}
bbf6b540 JA	506
	507	static int recurse_dir(struct thread_data td, const char dirname)
	508	{
	509	struct dirent *dir;
	510	int ret = 0;
	511	DIR *D;
	512
	513	D = opendir(dirname);
	514	if (!D) {
	515	td_verror(td, errno, "opendir");
	516	return 1;
	517	}
	518
	519	while ((dir = readdir(D)) != NULL) {
	520	char full_path[PATH_MAX];
	521	struct stat sb;
	522
e85b2b83 JA	523	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
e85b2b83 JA	524	continue;
96d32d51	525
bbf6b540 JA	526	sprintf(full_path, "%s/%s", dirname, dir->d_name);
	527
	528	if (lstat(full_path, &sb) == -1) {
	529	if (errno != ENOENT) {
	530	td_verror(td, errno, "stat");
	531	return 1;
	532	}
	533	}
	534
	535	if (S_ISREG(sb.st_mode)) {
	536	add_file(td, full_path);
2dc1bbeb	537	td->o.nr_files++;
bbf6b540 JA	538	continue;
	539	}
	540
bbf6b540 JA	541	if ((ret = recurse_dir(td, full_path)) != 0)
	542	break;
	543	}
	544
	545	closedir(D);
	546	return ret;
	547	}
	548
	549	int add_dir_files(struct thread_data td, const char path)
	550	{
	551	return recurse_dir(td, path);
	552	}
cade3ef4 JA	553
	554	void dup_files(struct thread_data td, struct thread_data org)
	555	{
	556	struct fio_file *f;
	557	unsigned int i;
	558	size_t bytes;
	559
	560	if (!org->files)
	561	return;
	562
	563	bytes = org->files_index * sizeof(*f);
	564	td->files = malloc(bytes);
	565	memcpy(td->files, org->files, bytes);
	566
	567	for_each_file(td, f, i) {
	568	if (f->file_name)
	569	f->file_name = strdup(f->file_name);
	570	}
	571	}