[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"

/*
 * Check if the file exists and it's large enough.
 */
static int file_ok(struct thread_data *td, struct fio_file *f)
{
	struct stat st;

	if (f->filetype != FIO_TYPE_FILE ||
	    (td->io_ops->flags & FIO_DISKLESSIO))
		return 0;

	if (lstat(f->file_name, &st) == -1)
		return 1;

	/*
	 * if it's a special file, size is always ok for now
	 */
	if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
		return 0;
	if (st.st_size < (off_t) f->file_size)
		return 1;

	return 0;
}

static int create_file(struct thread_data *td, struct fio_file *f)
{
	unsigned long long left;
	unsigned int bs;
	char *b;
	int r;

	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->file_size) == -1) {
		td_verror(td, errno, "ftruncate");
		goto err;
	}

	if (posix_fallocate(f->fd, 0, f->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->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 set_rand_file_size(struct thread_data *td,
					     unsigned long long total_size)
{
	unsigned long long upper = total_size;
	unsigned long long ret;
	long r;

	if (upper > td->o.file_size_high)
		upper = td->o.file_size_high;
	else if (upper < td->o.file_size_low)
		return 0;
	else if (!upper)
		return 0;

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

static int fill_file_size(struct thread_data *td, struct fio_file *f,
			  unsigned long long *file_size, int new_files)
{
	if (!td->o.file_size_low) {
		f->file_size = *file_size / new_files;
		f->real_file_size = f->file_size;
	} else {
		/*
		 * If we don't have enough space left for a file
		 * of the minimum size, bail.
		 */
		if (*file_size < td->o.file_size_low)
			return 1;

		f->file_size = set_rand_file_size(td, *file_size);
		f->real_file_size = f->file_size;
		*file_size -= f->file_size;
	}

	return 0;
}

static int create_files(struct thread_data *td)
{
	struct fio_file *f;
	int err, need_create, can_extend;
	unsigned long long total_file_size, local_file_size, create_size;
	unsigned int i, new_files;

	new_files = 0;
	total_file_size = td->o.size;
	for_each_file(td, f, i) {
		unsigned long long s;

		f->file_offset = td->o.start_offset;

		if (f->filetype != FIO_TYPE_FILE)
			continue;
		if (!total_file_size)
			continue;

		if (f->flags & FIO_FILE_EXISTS) {
			if ((f->file_size > td->o.size / td->o.nr_files) ||
			    !f->file_size)
				f->file_size = td->o.size / td->o.nr_files;

			s = f->file_size;
			if (s > total_file_size)
				s = total_file_size;

			total_file_size -= s;
		} else
			new_files++;
	}

	/*
	 * unless specifically asked for overwrite, let normal io extend it
	 */
	can_extend = !td->o.overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
	if (can_extend && new_files) {
		for_each_file(td, f, i) {
			if (fill_file_size(td, f, &total_file_size, new_files)) {
				log_info("fio: limited to %d files\n", i);
				td->o.nr_files = i;
				break;
			}
		}

		return 0;
	}

	local_file_size = total_file_size;
	if (!local_file_size)
		local_file_size = -1;

	total_file_size = 0;
	need_create = 0;
	create_size = 0;
	for_each_file(td, f, i) {
		int file_there;

		if (f->filetype != FIO_TYPE_FILE)
			continue;
		if (f->flags & FIO_FILE_EXISTS) {
			total_file_size += f->file_size;
			continue;
		}

		if (fill_file_size(td, f, &local_file_size, new_files)) {
			log_info("fio: limited to %d files\n", i);
			new_files -= (td->o.nr_files - i);
			td->o.nr_files = i;
			break;
		}

		total_file_size += f->file_size;
		create_size += f->file_size;
		file_there = !file_ok(td, f);

		if (file_there && td_write(td) && !td->o.overwrite) {
			unlink(f->file_name);
			file_there = 0;
		}

		need_create += !file_there;
	}

	if (!need_create)
		return 0;

	if (!td->o.size && !total_file_size) {
		log_err("Need size for create\n");
		td_verror(td, EINVAL, "file_size");
		return 1;
	}

	temp_stall_ts = 1;
	log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
				td->o.name, new_files, create_size >> 20);

	err = 0;
	for_each_file(td, f, i) {
		/*
		 * Only unlink files that we created.
		 */
		f->flags &= ~FIO_FILE_UNLINK;
		if (file_ok(td, f)) {
			if (td->o.unlink)
				f->flags |= FIO_FILE_UNLINK;

			err = create_file(td, f);
			if (err)
				break;
		}
	}

	temp_stall_ts = 0;
	return err;
}

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

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

		f->real_file_size = st.st_size;

		if (!f->file_size || f->file_size > f->real_file_size)
			f->file_size = f->real_file_size;
	} else
		f->real_file_size = f->file_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;

	/*
	 * no extend possibilities, so limit size to device size if too large
	 */
	if (!f->file_size || f->file_size > f->real_file_size)
		f->file_size = f->real_file_size;

	f->file_size -= f->file_offset;
	return 0;
}

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

	if (f->filetype == FIO_TYPE_FILE) {
		if (!(f->flags & FIO_FILE_EXISTS))
			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->file_size, MADV_DONTNEED);
	else if (f->filetype == FIO_TYPE_FILE)
		ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
	else if (f->filetype == FIO_TYPE_BD)
		ret = blockdev_invalidate_cache(f->fd);
	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) {
		int __e = errno;

		td_verror(td, __e, "open");
		if (__e == EINVAL && td->o.odirect)
			log_err("fio: destination does not support O_DIRECT\n");
		if (__e == EMFILE)
			log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->o.nr_files);
		return 1;
	}

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

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

	if (!td_random(td)) {
		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
			td_verror(td, errno, "fadvise");
			goto err;
		}
	} else {
		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 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;
}

int setup_files(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;
	int err;

	/*
	 * if ioengine defines a setup() method, it's responsible for
	 * setting up everything in the td->files[] area.
	 */
	if (td->io_ops->setup)
		return td->io_ops->setup(td);

	if (create_files(td))
		return 1;

	err = open_files(td);
	if (err)
		return err;

	/*
	 * Recalculate the total file size now that files are set up.
	 */
	td->o.size = 0;
	for_each_file(td, f, i)
		td->o.size += f->file_size;

	td->io_size = td->o.size;
	if (td->io_size == 0) {
		log_err("%s: no io blocks\n", td->o.name);
		td_verror(td, EINVAL, "total_file_size");
		return 1;
	}

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

	td->total_io_size = td->io_size * td->o.loops;

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

	return err;
}

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->file_name && (f->flags & FIO_FILE_UNLINK) &&
		    f->filetype == FIO_TYPE_FILE) {
			unlink(f->file_name);
			free(f->file_name);
			f->file_name = NULL;
		}

		td_io_close_file(td, f);

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

	td->o.filename = NULL;
	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)) {
		f->flags |= FIO_FILE_EXISTS;

		if (S_ISBLK(sb.st_mode))
			f->filetype = FIO_TYPE_BD;
		else if (S_ISCHR(sb.st_mode))
			f->filetype = FIO_TYPE_CHAR;
		else {
			/*
			 * might as well do this here, and save a stat later on
			 */
			f->real_file_size = sb.st_size;
			f->file_size = f->real_file_size;
		}
	}
}

void add_file(struct thread_data *td, const char *fname)
{
	int cur_files = td->files_index;
	struct fio_file *f;

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

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

	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);
}
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
25205e97 JA	13	/*
	14	* Check if the file exists and it's large enough.
	15	*/
	16	static int file_ok(struct thread_data td, struct fio_file f)
53cdc686	17	{
b2a15192	18	struct stat st;
53cdc686	19
af52b345	20	if (f->filetype != FIO_TYPE_FILE \|\|
b5af8293	21	(td->io_ops->flags & FIO_DISKLESSIO))
b2a15192 JA	22	return 0;
b2a15192 JA	23
fa01d139	24	if (lstat(f->file_name, &st) == -1)
25205e97	25	return 1;
fa01d139 JA	26
	27	/*
	28	* if it's a special file, size is always ok for now
	29	*/
	30	if (S_ISCHR(st.st_mode) \|\| S_ISBLK(st.st_mode))
	31	return 0;
	32	if (st.st_size < (off_t) f->file_size)
25205e97 JA	33	return 1;
	34
	35	return 0;
	36	}
	37
	38	static int create_file(struct thread_data td, struct fio_file f)
	39	{
	40	unsigned long long left;
	41	unsigned int bs;
	42	char *b;
	43	int r;
b2a15192	44
53cdc686 JA	45	f->fd = open(f->file_name, O_WRONLY \| O_CREAT \| O_TRUNC, 0644);
53cdc686 JA	46	if (f->fd < 0) {
e1161c32	47	td_verror(td, errno, "open");
53cdc686 JA	48	return 1;
	49	}
	50
	51	if (ftruncate(f->fd, f->file_size) == -1) {
e1161c32	52	td_verror(td, errno, "ftruncate");
53cdc686 JA	53	goto err;
	54	}
	55
40f8298c	56	if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
e1161c32	57	td_verror(td, errno, "posix_fallocate");
40f8298c JA	58	goto err;
	59	}
	60
2dc1bbeb JA	61	b = malloc(td->o.max_bs[DDIR_WRITE]);
2dc1bbeb JA	62	memset(b, 0, td->o.max_bs[DDIR_WRITE]);
53cdc686 JA	63
	64	left = f->file_size;
	65	while (left && !td->terminate) {
2dc1bbeb	66	bs = td->o.max_bs[DDIR_WRITE];
53cdc686 JA	67	if (bs > left)
	68	bs = left;
	69
	70	r = write(f->fd, b, bs);
	71
	72	if (r == (int) bs) {
	73	left -= bs;
	74	continue;
	75	} else {
	76	if (r < 0)
e1161c32	77	td_verror(td, errno, "write");
53cdc686	78	else
e1161c32	79	td_verror(td, EIO, "write");
53cdc686 JA	80
	81	break;
	82	}
	83	}
	84
	85	if (td->terminate)
	86	unlink(f->file_name);
2dc1bbeb	87	else if (td->o.create_fsync)
53cdc686 JA	88	fsync(f->fd);
	89
	90	free(b);
	91	close(f->fd);
	92	f->fd = -1;
	93	return 0;
	94	err:
	95	close(f->fd);
	96	f->fd = -1;
	97	return 1;
	98	}
	99
9c60ce64 JA	100	static unsigned long long set_rand_file_size(struct thread_data *td,
	101	unsigned long long total_size)
	102	{
	103	unsigned long long upper = total_size;
	104	unsigned long long ret;
	105	long r;
	106
2dc1bbeb JA	107	if (upper > td->o.file_size_high)
	108	upper = td->o.file_size_high;
	109	else if (upper < td->o.file_size_low)
9c60ce64 JA	110	return 0;
	111	else if (!upper)
	112	return 0;
	113
	114	r = os_random_long(&td->file_size_state);
2dc1bbeb JA	115	ret = td->o.file_size_low + (unsigned long long) ((double) upper * (r / (RAND_MAX + 1.0)));
2dc1bbeb JA	116	ret -= (ret % td->o.rw_min_bs);
9c60ce64 JA	117	if (ret > upper)
	118	ret = upper;
	119	return ret;
	120	}
	121
68727076 JA	122	static int fill_file_size(struct thread_data td, struct fio_file f,
	123	unsigned long long *file_size, int new_files)
	124	{
	125	if (!td->o.file_size_low) {
	126	f->file_size = *file_size / new_files;
	127	f->real_file_size = f->file_size;
	128	} else {
	129	/*
	130	* If we don't have enough space left for a file
	131	* of the minimum size, bail.
	132	*/
	133	if (*file_size < td->o.file_size_low)
	134	return 1;
	135
	136	f->file_size = set_rand_file_size(td, *file_size);
	137	f->real_file_size = f->file_size;
	138	*file_size -= f->file_size;
	139	}
	140
	141	return 0;
	142	}
	143
53cdc686 JA	144	static int create_files(struct thread_data *td)
	145	{
	146	struct fio_file *f;
af52b345	147	int err, need_create, can_extend;
e8be395b	148	unsigned long long total_file_size, local_file_size, create_size;
e407bec2	149	unsigned int i, new_files;
53cdc686	150
e407bec2	151	new_files = 0;
2dc1bbeb	152	total_file_size = td->o.size;
1549441c	153	for_each_file(td, f, i) {
96d32d51 JA	154	unsigned long long s;
96d32d51 JA	155
2dc1bbeb	156	f->file_offset = td->o.start_offset;
96d32d51	157
1549441c JA	158	if (f->filetype != FIO_TYPE_FILE)
1549441c JA	159	continue;
ee3dcd95 JA	160	if (!total_file_size)
ee3dcd95 JA	161	continue;
1549441c	162
96d32d51	163	if (f->flags & FIO_FILE_EXISTS) {
ee3dcd95 JA	164	if ((f->file_size > td->o.size / td->o.nr_files) \|\|
	165	!f->file_size)
	166	f->file_size = td->o.size / td->o.nr_files;
	167
96d32d51 JA	168	s = f->file_size;
	169	if (s > total_file_size)
	170	s = total_file_size;
	171
	172	total_file_size -= s;
e407bec2 JA	173	} else
e407bec2 JA	174	new_files++;
1549441c	175	}
f697125a	176
53cdc686 JA	177	/*
	178	* unless specifically asked for overwrite, let normal io extend it
	179	*/
2dc1bbeb	180	can_extend = !td->o.overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
3f344202	181	if (can_extend && new_files) {
68727076 JA	182	for_each_file(td, f, i) {
	183	if (fill_file_size(td, f, &total_file_size, new_files)) {
	184	log_info("fio: limited to %d files\n", i);
	185	td->o.nr_files = i;
	186	break;
	187	}
	188	}
	189
53cdc686	190	return 0;
68727076	191	}
53cdc686	192
9c60ce64 JA	193	local_file_size = total_file_size;
	194	if (!local_file_size)
	195	local_file_size = -1;
	196
f4c4f4d7 JA	197	total_file_size = 0;
f4c4f4d7 JA	198	need_create = 0;
e8be395b	199	create_size = 0;
af52b345 JA	200	for_each_file(td, f, i) {
	201	int file_there;
	202
	203	if (f->filetype != FIO_TYPE_FILE)
	204	continue;
f4c4f4d7 JA	205	if (f->flags & FIO_FILE_EXISTS) {
f4c4f4d7 JA	206	total_file_size += f->file_size;
96d32d51	207	continue;
f4c4f4d7	208	}
96d32d51	209
68727076 JA	210	if (fill_file_size(td, f, &local_file_size, new_files)) {
	211	log_info("fio: limited to %d files\n", i);
	212	new_files -= (td->o.nr_files - i);
	213	td->o.nr_files = i;
	214	break;
9c60ce64	215	}
eff6861d	216
f4c4f4d7	217	total_file_size += f->file_size;
e8be395b	218	create_size += f->file_size;
af52b345	219	file_there = !file_ok(td, f);
eff6861d	220
2dc1bbeb	221	if (file_there && td_write(td) && !td->o.overwrite) {
af52b345 JA	222	unlink(f->file_name);
af52b345 JA	223	file_there = 0;
eff6861d	224	}
af52b345 JA	225
af52b345 JA	226	need_create += !file_there;
eff6861d	227	}
25205e97	228
25205e97 JA	229	if (!need_create)
	230	return 0;
	231
2dc1bbeb	232	if (!td->o.size && !total_file_size) {
f1027063	233	log_err("Need size for create\n");
e1161c32	234	td_verror(td, EINVAL, "file_size");
f1027063 JA	235	return 1;
	236	}
	237
53cdc686	238	temp_stall_ts = 1;
6d86144d	239	log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
2dc1bbeb	240	td->o.name, new_files, create_size >> 20);
53cdc686 JA	241
	242	err = 0;
	243	for_each_file(td, f, i) {
9b031dc8 JA	244	/*
	245	* Only unlink files that we created.
	246	*/
f11bd94d	247	f->flags &= ~FIO_FILE_UNLINK;
25205e97	248	if (file_ok(td, f)) {
2dc1bbeb	249	if (td->o.unlink)
f11bd94d JA	250	f->flags \|= FIO_FILE_UNLINK;
f11bd94d JA	251
25205e97 JA	252	err = create_file(td, f);
	253	if (err)
	254	break;
	255	}
53cdc686 JA	256	}
	257
	258	temp_stall_ts = 0;
	259	return err;
	260	}
	261
	262	static int file_size(struct thread_data td, struct fio_file f)
	263	{
	264	struct stat st;
	265
2dc1bbeb	266	if (td->o.overwrite) {
53cdc686	267	if (fstat(f->fd, &st) == -1) {
e1161c32	268	td_verror(td, errno, "fstat");
53cdc686 JA	269	return 1;
	270	}
	271
	272	f->real_file_size = st.st_size;
	273
	274	if (!f->file_size \|\| f->file_size > f->real_file_size)
	275	f->file_size = f->real_file_size;
745508dd JA	276	} else
745508dd JA	277	f->real_file_size = f->file_size;
53cdc686	278
53cdc686 JA	279	return 0;
	280	}
	281
	282	static int bdev_size(struct thread_data td, struct fio_file f)
	283	{
	284	unsigned long long bytes;
	285	int r;
	286
	287	r = blockdev_size(f->fd, &bytes);
	288	if (r) {
e1161c32	289	td_verror(td, r, "blockdev_size");
53cdc686 JA	290	return 1;
	291	}
	292
	293	f->real_file_size = bytes;
	294
	295	/*
	296	* no extend possibilities, so limit size to device size if too large
	297	*/
	298	if (!f->file_size \|\| f->file_size > f->real_file_size)
	299	f->file_size = f->real_file_size;
	300
	301	f->file_size -= f->file_offset;
	302	return 0;
	303	}
	304
	305	static int get_file_size(struct thread_data td, struct fio_file f)
	306	{
	307	int ret = 0;
	308
96d32d51 JA	309	if (f->filetype == FIO_TYPE_FILE) {
	310	if (!(f->flags & FIO_FILE_EXISTS))
	311	ret = file_size(td, f);
	312	} else if (f->filetype == FIO_TYPE_BD)
53cdc686 JA	313	ret = bdev_size(td, f);
	314	else
	315	f->real_file_size = -1;
	316
	317	if (ret)
	318	return ret;
	319
	320	if (f->file_offset > f->real_file_size) {
2dc1bbeb	321	log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
53cdc686 JA	322	return 1;
	323	}
	324
53cdc686 JA	325	return 0;
	326	}
	327
e5b401d4 JA	328	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	329	{
	330	int ret = 0;
	331
2dc1bbeb	332	if (td->o.odirect)
b5af8293 JA	333	return 0;
b5af8293 JA	334
e5b401d4 JA	335	/*
	336	* FIXME: add blockdev flushing too
	337	*/
b5af8293	338	if (f->mmap)
e5b401d4	339	ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
467d1b6b	340	else if (f->filetype == FIO_TYPE_FILE)
b5af8293	341	ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
467d1b6b	342	else if (f->filetype == FIO_TYPE_BD)
b5af8293	343	ret = blockdev_invalidate_cache(f->fd);
467d1b6b	344	else if (f->filetype == FIO_TYPE_CHAR)
e5b401d4 JA	345	ret = 0;
	346
	347	if (ret < 0) {
e1161c32	348	td_verror(td, errno, "invalidate_cache");
e5b401d4 JA	349	return 1;
	350	}
	351
ad2da605	352	return ret;
e5b401d4 JA	353	}
e5b401d4 JA	354
b5af8293	355	void generic_close_file(struct thread_data fio_unused td, struct fio_file f)
53cdc686	356	{
b5af8293 JA	357	close(f->fd);
b5af8293 JA	358	f->fd = -1;
53cdc686 JA	359	}
53cdc686 JA	360
b5af8293	361	int generic_open_file(struct thread_data td, struct fio_file f)
53cdc686	362	{
53cdc686 JA	363	int flags = 0;
53cdc686 JA	364
2dc1bbeb	365	if (td->o.odirect)
2fd233b7	366	flags \|= OS_O_DIRECT;
2dc1bbeb	367	if (td->o.sync_io)
2fd233b7	368	flags \|= O_SYNC;
53cdc686	369
2fd233b7 JA	370	if (td_write(td) \|\| td_rw(td)) {
2fd233b7 JA	371	flags \|= O_RDWR;
53cdc686	372
af52b345	373	if (f->filetype == FIO_TYPE_FILE)
2fd233b7	374	flags \|= O_CREAT;
2fd233b7	375
b5af8293	376	f->fd = open(f->file_name, flags, 0600);
2fd233b7	377	} else {
af52b345	378	if (f->filetype == FIO_TYPE_CHAR)
2fd233b7 JA	379	flags \|= O_RDWR;
	380	else
	381	flags \|= O_RDONLY;
	382
b5af8293	383	f->fd = open(f->file_name, flags);
53cdc686 JA	384	}
	385
	386	if (f->fd == -1) {
e1161c32 JA	387	int __e = errno;
	388
	389	td_verror(td, __e, "open");
2dc1bbeb	390	if (__e == EINVAL && td->o.odirect)
9d80e114	391	log_err("fio: destination does not support O_DIRECT\n");
8ab53873	392	if (__e == EMFILE)
2dc1bbeb	393	log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->o.nr_files);
53cdc686 JA	394	return 1;
	395	}
	396
b5af8293 JA	397	if (get_file_size(td, f))
	398	goto err;
	399
2dc1bbeb	400	if (td->o.invalidate_cache && file_invalidate_cache(td, f))
b5af8293 JA	401	goto err;
	402
	403	if (!td_random(td)) {
	404	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
	405	td_verror(td, errno, "fadvise");
	406	goto err;
	407	}
	408	} else {
	409	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
	410	td_verror(td, errno, "fadvise");
	411	goto err;
	412	}
bdb4e2e9	413	}
53cdc686 JA	414
53cdc686 JA	415	return 0;
b5af8293 JA	416	err:
	417	close(f->fd);
	418	return 1;
	419	}
	420
21972cde JA	421	int open_files(struct thread_data *td)
	422	{
	423	struct fio_file *f;
af52b345 JA	424	unsigned int i;
af52b345 JA	425	int err = 0;
21972cde JA	426
21972cde JA	427	for_each_file(td, f, i) {
b5af8293	428	err = td_io_open_file(td, f);
21972cde JA	429	if (err)
21972cde JA	430	break;
b5af8293	431
2dc1bbeb	432	if (td->o.open_files == td->nr_open_files)
b5af8293	433	break;
21972cde JA	434	}
21972cde JA	435
7abf833d JA	436	if (!err)
	437	return 0;
	438
bdb4e2e9	439	for_each_file(td, f, i)
b5af8293	440	td_io_close_file(td, f);
7abf833d	441
21972cde JA	442	return err;
	443	}
	444
53cdc686 JA	445	int setup_files(struct thread_data *td)
	446	{
	447	struct fio_file *f;
af52b345 JA	448	unsigned int i;
af52b345 JA	449	int err;
53cdc686 JA	450
	451	/*
	452	* if ioengine defines a setup() method, it's responsible for
	453	* setting up everything in the td->files[] area.
	454	*/
	455	if (td->io_ops->setup)
	456	return td->io_ops->setup(td);
	457
	458	if (create_files(td))
	459	return 1;
	460
21972cde	461	err = open_files(td);
f1027063 JA	462	if (err)
	463	return err;
	464
0a7eb121 JA	465	/*
	466	* Recalculate the total file size now that files are set up.
	467	*/
2dc1bbeb	468	td->o.size = 0;
0a7eb121	469	for_each_file(td, f, i)
2dc1bbeb	470	td->o.size += f->file_size;
0a7eb121	471
2dc1bbeb	472	td->io_size = td->o.size;
53cdc686	473	if (td->io_size == 0) {
2dc1bbeb	474	log_err("%s: no io blocks\n", td->o.name);
e1161c32	475	td_verror(td, EINVAL, "total_file_size");
53cdc686 JA	476	return 1;
	477	}
	478
2dc1bbeb JA	479	if (!td->o.zone_size)
2dc1bbeb JA	480	td->o.zone_size = td->io_size;
53cdc686	481
2dc1bbeb	482	td->total_io_size = td->io_size * td->o.loops;
53cdc686	483
bdb4e2e9	484	for_each_file(td, f, i)
b5af8293	485	td_io_close_file(td, f);
21972cde JA	486
21972cde JA	487	return err;
53cdc686 JA	488	}
53cdc686 JA	489
68727076 JA	490	int init_random_map(struct thread_data *td)
	491	{
	492	int num_maps, blocks;
	493	struct fio_file *f;
	494	unsigned int i;
	495
	496	if (td->o.norandommap)
	497	return 0;
	498
	499	for_each_file(td, f, i) {
	500	blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
	501	num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
	502	f->file_map = malloc(num_maps * sizeof(long));
	503	if (!f->file_map) {
	504	log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
	505	return 1;
	506	}
	507	f->num_maps = num_maps;
	508	memset(f->file_map, 0, num_maps * sizeof(long));
	509	}
	510
	511	return 0;
	512	}
	513
53cdc686 JA	514	void close_files(struct thread_data *td)
53cdc686 JA	515	{
0ab8db89	516	struct fio_file *f;
af52b345	517	unsigned int i;
53cdc686	518
0ab8db89	519	for_each_file(td, f, i) {
1315a68a	520	if (!f->file_name && (f->flags & FIO_FILE_UNLINK) &&
af52b345	521	f->filetype == FIO_TYPE_FILE) {
132ad46d	522	unlink(f->file_name);
1315a68a	523	free(f->file_name);
132ad46d JA	524	f->file_name = NULL;
132ad46d JA	525	}
bdb4e2e9	526
b5af8293	527	td_io_close_file(td, f);
b3dc7f07	528
c343981b	529	if (f->file_map) {
b3dc7f07	530	free(f->file_map);
c343981b JA	531	f->file_map = NULL;
c343981b JA	532	}
53cdc686	533	}
b4a6a59a	534
2dc1bbeb	535	td->o.filename = NULL;
b4a6a59a	536	td->files = NULL;
2dc1bbeb	537	td->o.nr_files = 0;
53cdc686	538	}
af52b345	539
e3bab463	540	static void get_file_type(struct fio_file *f)
af52b345 JA	541	{
	542	struct stat sb;
	543
	544	f->filetype = FIO_TYPE_FILE;
	545
e3bab463	546	if (!lstat(f->file_name, &sb)) {
96d32d51 JA	547	f->flags \|= FIO_FILE_EXISTS;
96d32d51 JA	548
af52b345 JA	549	if (S_ISBLK(sb.st_mode))
	550	f->filetype = FIO_TYPE_BD;
	551	else if (S_ISCHR(sb.st_mode))
	552	f->filetype = FIO_TYPE_CHAR;
96d32d51 JA	553	else {
	554	/*
	555	* might as well do this here, and save a stat later on
	556	*/
	557	f->real_file_size = sb.st_size;
	558	f->file_size = f->real_file_size;
	559	}
af52b345 JA	560	}
	561	}
	562
	563	void add_file(struct thread_data td, const char fname)
	564	{
7b4e4fe5	565	int cur_files = td->files_index;
af52b345 JA	566	struct fio_file *f;
	567
	568	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	569
	570	f = &td->files[cur_files];
	571	memset(f, 0, sizeof(*f));
	572	f->fd = -1;
cae61953	573	f->file_name = strdup(fname);
af52b345	574
e3bab463	575	get_file_type(f);
af52b345	576
7b4e4fe5	577	td->files_index++;
1549441c JA	578	if (f->filetype == FIO_TYPE_FILE)
1549441c JA	579	td->nr_normal_files++;
af52b345	580	}
0ad920e7 JA	581
	582	void get_file(struct fio_file *f)
	583	{
	584	f->references++;
	585	}
	586
	587	void put_file(struct thread_data td, struct fio_file f)
	588	{
	589	if (!(f->flags & FIO_FILE_OPEN))
	590	return;
	591
	592	assert(f->references);
	593	if (--f->references)
	594	return;
	595
2dc1bbeb	596	if (should_fsync(td) && td->o.fsync_on_close)
ebb1415f JA	597	fsync(f->fd);
ebb1415f JA	598
0ad920e7 JA	599	if (td->io_ops->close_file)
	600	td->io_ops->close_file(td, f);
	601	td->nr_open_files--;
	602	f->flags &= ~FIO_FILE_OPEN;
	603	}
bbf6b540 JA	604
	605	static int recurse_dir(struct thread_data td, const char dirname)
	606	{
	607	struct dirent *dir;
	608	int ret = 0;
	609	DIR *D;
	610
	611	D = opendir(dirname);
	612	if (!D) {
	613	td_verror(td, errno, "opendir");
	614	return 1;
	615	}
	616
	617	while ((dir = readdir(D)) != NULL) {
	618	char full_path[PATH_MAX];
	619	struct stat sb;
	620
e85b2b83 JA	621	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
e85b2b83 JA	622	continue;
96d32d51	623
bbf6b540 JA	624	sprintf(full_path, "%s/%s", dirname, dir->d_name);
	625
	626	if (lstat(full_path, &sb) == -1) {
	627	if (errno != ENOENT) {
	628	td_verror(td, errno, "stat");
	629	return 1;
	630	}
	631	}
	632
	633	if (S_ISREG(sb.st_mode)) {
	634	add_file(td, full_path);
2dc1bbeb	635	td->o.nr_files++;
bbf6b540 JA	636	continue;
	637	}
	638
bbf6b540 JA	639	if ((ret = recurse_dir(td, full_path)) != 0)
	640	break;
	641	}
	642
	643	closedir(D);
	644	return ret;
	645	}
	646
	647	int add_dir_files(struct thread_data td, const char path)
	648	{
	649	return recurse_dir(td, path);
	650	}