[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->max_bs[DDIR_WRITE]);
	memset(b, 0, td->max_bs[DDIR_WRITE]);

	left = f->file_size;
	while (left && !td->terminate) {
		bs = td->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->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->file_size_high)
		upper = td->file_size_high;
	else if (upper < td->file_size_low)
		return 0;
	else if (!upper)
		return 0;

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

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;
	unsigned int i, new_files;

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

		f->file_offset = td->start_offset;

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

		if (f->flags & FIO_FILE_EXISTS) {
			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->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
	if (can_extend)
		return 0;

	need_create = 0;
	local_file_size = total_file_size;
	if (!local_file_size)
		local_file_size = -1;

	for_each_file(td, f, i) {
		int file_there;

		if (f->filetype != FIO_TYPE_FILE)
			continue;
		if (f->flags & FIO_FILE_EXISTS)
			continue;

		if (!td->file_size_low)
			f->file_size = total_file_size / new_files;
		else {
			/*
			 * If we don't have enough space left for a file
			 * of the minimum size, bail.
			 */
			if (local_file_size < td->file_size_low) {
				log_info("fio: limited to %d files\n", i);
				new_files -= (td->nr_files - i);
				td->nr_files = i;
				break;
			}

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

		file_there = !file_ok(td, f);

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

		need_create += !file_there;
	}

	if (!need_create)
		return 0;

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

	temp_stall_ts = 1;
	fprintf(f_out, "%s: Laying out IO file(s) (%u files / %LuMiB)\n",
				td->name, new_files,
				total_file_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->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->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->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->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->odirect)
		flags |= OS_O_DIRECT;
	if (td->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->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->nr_files);
		return 1;
	}

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

	if (td->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->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->total_file_size = 0;
	for_each_file(td, f, i)
		td->total_file_size += f->file_size;

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

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

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

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

	return err;
}

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);
	}

	td->filename = NULL;
	td->files = NULL;
	td->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->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->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
a00735e6 JA	61	b = malloc(td->max_bs[DDIR_WRITE]);
a00735e6 JA	62	memset(b, 0, td->max_bs[DDIR_WRITE]);
53cdc686 JA	63
	64	left = f->file_size;
	65	while (left && !td->terminate) {
a00735e6	66	bs = td->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);
	87	else if (td->create_fsync)
	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
	107	if (upper > td->file_size_high)
	108	upper = td->file_size_high;
	109	else if (upper < td->file_size_low)
	110	return 0;
	111	else if (!upper)
	112	return 0;
	113
	114	r = os_random_long(&td->file_size_state);
	115	ret = td->file_size_low + (unsigned long long) ((double) upper * (r / (RAND_MAX + 1.0)));
	116	ret -= (ret % td->rw_min_bs);
	117	if (ret > upper)
	118	ret = upper;
	119	return ret;
	120	}
	121
53cdc686 JA	122	static int create_files(struct thread_data *td)
	123	{
	124	struct fio_file *f;
af52b345	125	int err, need_create, can_extend;
9c60ce64	126	unsigned long long total_file_size, local_file_size;
e407bec2	127	unsigned int i, new_files;
53cdc686	128
e407bec2	129	new_files = 0;
96d32d51	130	total_file_size = td->total_file_size;
1549441c	131	for_each_file(td, f, i) {
96d32d51 JA	132	unsigned long long s;
	133
	134	f->file_offset = td->start_offset;
	135
1549441c JA	136	if (f->filetype != FIO_TYPE_FILE)
	137	continue;
	138
96d32d51 JA	139	if (f->flags & FIO_FILE_EXISTS) {
	140	s = f->file_size;
	141	if (s > total_file_size)
	142	s = total_file_size;
	143
	144	total_file_size -= s;
e407bec2 JA	145	} else
e407bec2 JA	146	new_files++;
1549441c	147	}
f697125a	148
53cdc686 JA	149	/*
	150	* unless specifically asked for overwrite, let normal io extend it
	151	*/
0263882a JA	152	can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
0263882a JA	153	if (can_extend)
53cdc686	154	return 0;
53cdc686	155
25205e97	156	need_create = 0;
9c60ce64 JA	157	local_file_size = total_file_size;
	158	if (!local_file_size)
	159	local_file_size = -1;
	160
af52b345 JA	161	for_each_file(td, f, i) {
	162	int file_there;
	163
	164	if (f->filetype != FIO_TYPE_FILE)
	165	continue;
96d32d51 JA	166	if (f->flags & FIO_FILE_EXISTS)
	167	continue;
	168
9c60ce64 JA	169	if (!td->file_size_low)
	170	f->file_size = total_file_size / new_files;
	171	else {
	172	/*
	173	* If we don't have enough space left for a file
	174	* of the minimum size, bail.
	175	*/
	176	if (local_file_size < td->file_size_low) {
	177	log_info("fio: limited to %d files\n", i);
	178	new_files -= (td->nr_files - i);
	179	td->nr_files = i;
	180	break;
	181	}
	182
	183	f->file_size = set_rand_file_size(td, local_file_size);
	184	local_file_size -= f->file_size;
	185	}
eff6861d	186
af52b345	187	file_there = !file_ok(td, f);
eff6861d	188
af52b345 JA	189	if (file_there && td_write(td) && !td->overwrite) {
	190	unlink(f->file_name);
	191	file_there = 0;
eff6861d	192	}
af52b345 JA	193
af52b345 JA	194	need_create += !file_there;
eff6861d	195	}
25205e97	196
25205e97 JA	197	if (!need_create)
	198	return 0;
	199
f1027063 JA	200	if (!td->total_file_size) {
f1027063 JA	201	log_err("Need size for create\n");
e1161c32	202	td_verror(td, EINVAL, "file_size");
f1027063 JA	203	return 1;
	204	}
	205
53cdc686	206	temp_stall_ts = 1;
9c60ce64	207	fprintf(f_out, "%s: Laying out IO file(s) (%u files / %LuMiB)\n",
e407bec2	208	td->name, new_files,
e407bec2	209	total_file_size >> 20);
53cdc686 JA	210
	211	err = 0;
	212	for_each_file(td, f, i) {
9b031dc8 JA	213	/*
	214	* Only unlink files that we created.
	215	*/
f11bd94d	216	f->flags &= ~FIO_FILE_UNLINK;
25205e97	217	if (file_ok(td, f)) {
f11bd94d JA	218	if (td->unlink)
	219	f->flags \|= FIO_FILE_UNLINK;
	220
25205e97 JA	221	err = create_file(td, f);
	222	if (err)
	223	break;
	224	}
53cdc686 JA	225	}
	226
	227	temp_stall_ts = 0;
	228	return err;
	229	}
	230
	231	static int file_size(struct thread_data td, struct fio_file f)
	232	{
	233	struct stat st;
	234
	235	if (td->overwrite) {
	236	if (fstat(f->fd, &st) == -1) {
e1161c32	237	td_verror(td, errno, "fstat");
53cdc686 JA	238	return 1;
	239	}
	240
	241	f->real_file_size = st.st_size;
	242
	243	if (!f->file_size \|\| f->file_size > f->real_file_size)
	244	f->file_size = f->real_file_size;
745508dd JA	245	} else
745508dd JA	246	f->real_file_size = f->file_size;
53cdc686	247
53cdc686 JA	248	return 0;
	249	}
	250
	251	static int bdev_size(struct thread_data td, struct fio_file f)
	252	{
	253	unsigned long long bytes;
	254	int r;
	255
	256	r = blockdev_size(f->fd, &bytes);
	257	if (r) {
e1161c32	258	td_verror(td, r, "blockdev_size");
53cdc686 JA	259	return 1;
	260	}
	261
	262	f->real_file_size = bytes;
	263
	264	/*
	265	* no extend possibilities, so limit size to device size if too large
	266	*/
	267	if (!f->file_size \|\| f->file_size > f->real_file_size)
	268	f->file_size = f->real_file_size;
	269
	270	f->file_size -= f->file_offset;
	271	return 0;
	272	}
	273
	274	static int get_file_size(struct thread_data td, struct fio_file f)
	275	{
	276	int ret = 0;
	277
96d32d51 JA	278	if (f->filetype == FIO_TYPE_FILE) {
	279	if (!(f->flags & FIO_FILE_EXISTS))
	280	ret = file_size(td, f);
	281	} else if (f->filetype == FIO_TYPE_BD)
53cdc686 JA	282	ret = bdev_size(td, f);
	283	else
	284	f->real_file_size = -1;
	285
	286	if (ret)
	287	return ret;
	288
	289	if (f->file_offset > f->real_file_size) {
	290	log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
	291	return 1;
	292	}
	293
53cdc686 JA	294	return 0;
	295	}
	296
e5b401d4 JA	297	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	298	{
	299	int ret = 0;
	300
da86ccb6	301	if (td->odirect)
b5af8293 JA	302	return 0;
b5af8293 JA	303
e5b401d4 JA	304	/*
	305	* FIXME: add blockdev flushing too
	306	*/
b5af8293	307	if (f->mmap)
e5b401d4	308	ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
af52b345	309	else if (f->filetype == FIO_TYPE_FILE) {
b5af8293	310	ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
af52b345	311	} else if (f->filetype == FIO_TYPE_BD) {
b5af8293	312	ret = blockdev_invalidate_cache(f->fd);
af52b345	313	} else if (f->filetype == FIO_TYPE_CHAR)
e5b401d4 JA	314	ret = 0;
	315
	316	if (ret < 0) {
e1161c32	317	td_verror(td, errno, "invalidate_cache");
e5b401d4 JA	318	return 1;
	319	}
	320
ad2da605	321	return ret;
e5b401d4 JA	322	}
e5b401d4 JA	323
b5af8293	324	void generic_close_file(struct thread_data fio_unused td, struct fio_file f)
53cdc686	325	{
b5af8293 JA	326	close(f->fd);
b5af8293 JA	327	f->fd = -1;
53cdc686 JA	328	}
53cdc686 JA	329
b5af8293	330	int generic_open_file(struct thread_data td, struct fio_file f)
53cdc686	331	{
53cdc686 JA	332	int flags = 0;
53cdc686 JA	333
2fd233b7 JA	334	if (td->odirect)
	335	flags \|= OS_O_DIRECT;
	336	if (td->sync_io)
	337	flags \|= O_SYNC;
53cdc686	338
2fd233b7 JA	339	if (td_write(td) \|\| td_rw(td)) {
2fd233b7 JA	340	flags \|= O_RDWR;
53cdc686	341
af52b345	342	if (f->filetype == FIO_TYPE_FILE)
2fd233b7	343	flags \|= O_CREAT;
2fd233b7	344
b5af8293	345	f->fd = open(f->file_name, flags, 0600);
2fd233b7	346	} else {
af52b345	347	if (f->filetype == FIO_TYPE_CHAR)
2fd233b7 JA	348	flags \|= O_RDWR;
	349	else
	350	flags \|= O_RDONLY;
	351
b5af8293	352	f->fd = open(f->file_name, flags);
53cdc686 JA	353	}
	354
	355	if (f->fd == -1) {
e1161c32 JA	356	int __e = errno;
	357
	358	td_verror(td, __e, "open");
	359	if (__e == EINVAL && td->odirect)
9d80e114	360	log_err("fio: destination does not support O_DIRECT\n");
8ab53873 JA	361	if (__e == EMFILE)
8ab53873 JA	362	log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->nr_files);
53cdc686 JA	363	return 1;
	364	}
	365
b5af8293 JA	366	if (get_file_size(td, f))
	367	goto err;
	368
0263882a	369	if (td->invalidate_cache && file_invalidate_cache(td, f))
b5af8293 JA	370	goto err;
	371
	372	if (!td_random(td)) {
	373	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
	374	td_verror(td, errno, "fadvise");
	375	goto err;
	376	}
	377	} else {
	378	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
	379	td_verror(td, errno, "fadvise");
	380	goto err;
	381	}
bdb4e2e9	382	}
53cdc686 JA	383
53cdc686 JA	384	return 0;
b5af8293 JA	385	err:
	386	close(f->fd);
	387	return 1;
	388	}
	389
21972cde JA	390	int open_files(struct thread_data *td)
	391	{
	392	struct fio_file *f;
af52b345 JA	393	unsigned int i;
af52b345 JA	394	int err = 0;
21972cde JA	395
21972cde JA	396	for_each_file(td, f, i) {
b5af8293	397	err = td_io_open_file(td, f);
21972cde JA	398	if (err)
21972cde JA	399	break;
b5af8293 JA	400
	401	if (td->open_files == td->nr_open_files)
	402	break;
21972cde JA	403	}
21972cde JA	404
7abf833d JA	405	if (!err)
	406	return 0;
	407
bdb4e2e9	408	for_each_file(td, f, i)
b5af8293	409	td_io_close_file(td, f);
7abf833d	410
21972cde JA	411	return err;
	412	}
	413
53cdc686 JA	414	int setup_files(struct thread_data *td)
	415	{
	416	struct fio_file *f;
af52b345 JA	417	unsigned int i;
af52b345 JA	418	int err;
53cdc686 JA	419
	420	/*
	421	* if ioengine defines a setup() method, it's responsible for
	422	* setting up everything in the td->files[] area.
	423	*/
	424	if (td->io_ops->setup)
	425	return td->io_ops->setup(td);
	426
	427	if (create_files(td))
	428	return 1;
	429
21972cde	430	err = open_files(td);
f1027063 JA	431	if (err)
	432	return err;
	433
0a7eb121 JA	434	/*
	435	* Recalculate the total file size now that files are set up.
	436	*/
	437	td->total_file_size = 0;
	438	for_each_file(td, f, i)
	439	td->total_file_size += f->file_size;
	440
f1027063	441	td->io_size = td->total_file_size;
53cdc686 JA	442	if (td->io_size == 0) {
53cdc686 JA	443	log_err("%s: no io blocks\n", td->name);
e1161c32	444	td_verror(td, EINVAL, "total_file_size");
53cdc686 JA	445	return 1;
	446	}
	447
	448	if (!td->zone_size)
	449	td->zone_size = td->io_size;
	450
	451	td->total_io_size = td->io_size * td->loops;
	452
bdb4e2e9	453	for_each_file(td, f, i)
b5af8293	454	td_io_close_file(td, f);
21972cde JA	455
21972cde JA	456	return err;
53cdc686 JA	457	}
	458
	459	void close_files(struct thread_data *td)
	460	{
0ab8db89	461	struct fio_file *f;
af52b345	462	unsigned int i;
53cdc686	463
0ab8db89	464	for_each_file(td, f, i) {
1315a68a	465	if (!f->file_name && (f->flags & FIO_FILE_UNLINK) &&
af52b345	466	f->filetype == FIO_TYPE_FILE) {
132ad46d	467	unlink(f->file_name);
1315a68a	468	free(f->file_name);
132ad46d JA	469	f->file_name = NULL;
132ad46d JA	470	}
bdb4e2e9	471
b5af8293	472	td_io_close_file(td, f);
b3dc7f07 JA	473
	474	if (f->file_map)
	475	free(f->file_map);
53cdc686	476	}
b4a6a59a	477
132ad46d	478	td->filename = NULL;
b4a6a59a JA	479	td->files = NULL;
b4a6a59a JA	480	td->nr_files = 0;
53cdc686	481	}
af52b345	482
e3bab463	483	static void get_file_type(struct fio_file *f)
af52b345 JA	484	{
	485	struct stat sb;
	486
	487	f->filetype = FIO_TYPE_FILE;
	488
e3bab463	489	if (!lstat(f->file_name, &sb)) {
96d32d51 JA	490	f->flags \|= FIO_FILE_EXISTS;
96d32d51 JA	491
af52b345 JA	492	if (S_ISBLK(sb.st_mode))
	493	f->filetype = FIO_TYPE_BD;
	494	else if (S_ISCHR(sb.st_mode))
	495	f->filetype = FIO_TYPE_CHAR;
96d32d51 JA	496	else {
	497	/*
	498	* might as well do this here, and save a stat later on
	499	*/
	500	f->real_file_size = sb.st_size;
	501	f->file_size = f->real_file_size;
	502	}
af52b345 JA	503	}
	504	}
	505
	506	void add_file(struct thread_data td, const char fname)
	507	{
7b4e4fe5	508	int cur_files = td->files_index;
af52b345 JA	509	struct fio_file *f;
	510
	511	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	512
	513	f = &td->files[cur_files];
	514	memset(f, 0, sizeof(*f));
	515	f->fd = -1;
cae61953	516	f->file_name = strdup(fname);
af52b345	517
e3bab463	518	get_file_type(f);
af52b345	519
7b4e4fe5	520	td->files_index++;
1549441c JA	521	if (f->filetype == FIO_TYPE_FILE)
1549441c JA	522	td->nr_normal_files++;
af52b345	523	}
0ad920e7 JA	524
	525	void get_file(struct fio_file *f)
	526	{
	527	f->references++;
	528	}
	529
	530	void put_file(struct thread_data td, struct fio_file f)
	531	{
	532	if (!(f->flags & FIO_FILE_OPEN))
	533	return;
	534
	535	assert(f->references);
	536	if (--f->references)
	537	return;
	538
ebb1415f JA	539	if (should_fsync(td) && td->fsync_on_close)
	540	fsync(f->fd);
	541
0ad920e7 JA	542	if (td->io_ops->close_file)
	543	td->io_ops->close_file(td, f);
	544	td->nr_open_files--;
	545	f->flags &= ~FIO_FILE_OPEN;
	546	}
bbf6b540 JA	547
	548	static int recurse_dir(struct thread_data td, const char dirname)
	549	{
	550	struct dirent *dir;
	551	int ret = 0;
	552	DIR *D;
	553
	554	D = opendir(dirname);
	555	if (!D) {
	556	td_verror(td, errno, "opendir");
	557	return 1;
	558	}
	559
	560	while ((dir = readdir(D)) != NULL) {
	561	char full_path[PATH_MAX];
	562	struct stat sb;
	563
e85b2b83 JA	564	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
e85b2b83 JA	565	continue;
96d32d51	566
bbf6b540 JA	567	sprintf(full_path, "%s/%s", dirname, dir->d_name);
	568
	569	if (lstat(full_path, &sb) == -1) {
	570	if (errno != ENOENT) {
	571	td_verror(td, errno, "stat");
	572	return 1;
	573	}
	574	}
	575
	576	if (S_ISREG(sb.st_mode)) {
	577	add_file(td, full_path);
	578	td->nr_files++;
	579	continue;
	580	}
	581
bbf6b540 JA	582	if ((ret = recurse_dir(td, full_path)) != 0)
	583	break;
	584	}
	585
	586	closedir(D);
	587	return ret;
	588	}
	589
	590	int add_dir_files(struct thread_data td, const char path)
	591	{
	592	return recurse_dir(td, path);
	593	}