11 static int create_file(struct thread_data *td, struct fio_file *f)
13 unsigned long long left;
19 if (td->filetype != FIO_TYPE_FILE)
22 if (stat(f->file_name, &st) == -1) {
23 if (!td->create_file) {
24 td_verror(td, ENOENT);
27 } else if (st.st_size >= (off_t) f->file_size)
30 f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
36 if (ftruncate(f->fd, f->file_size) == -1) {
41 b = malloc(td->max_bs);
42 memset(b, 0, td->max_bs);
45 while (left && !td->terminate) {
50 r = write(f->fd, b, bs);
67 else if (td->create_fsync)
80 static int create_files(struct thread_data *td)
86 * unless specifically asked for overwrite, let normal io extend it
89 for_each_file(td, f, i)
90 f->file_size = td->total_file_size / td->nr_files;
95 if (!td->total_file_size) {
96 log_err("Need size for create\n");
97 td_verror(td, EINVAL);
102 fprintf(f_out, "%s: Laying out IO file(s) (%LuMiB)\n",
103 td->name, td->total_file_size >> 20);
106 for_each_file(td, f, i) {
107 f->file_size = td->total_file_size / td->nr_files;
108 err = create_file(td, f);
113 td->io_size = td->total_file_size;
118 static int file_size(struct thread_data *td, struct fio_file *f)
123 if (fstat(f->fd, &st) == -1) {
124 td_verror(td, errno);
128 f->real_file_size = st.st_size;
130 if (!f->file_size || f->file_size > f->real_file_size)
131 f->file_size = f->real_file_size;
134 f->file_size -= f->file_offset;
138 static int bdev_size(struct thread_data *td, struct fio_file *f)
140 unsigned long long bytes;
143 r = blockdev_size(f->fd, &bytes);
149 f->real_file_size = bytes;
152 * no extend possibilities, so limit size to device size if too large
154 if (!f->file_size || f->file_size > f->real_file_size)
155 f->file_size = f->real_file_size;
157 f->file_size -= f->file_offset;
161 static int get_file_size(struct thread_data *td, struct fio_file *f)
165 if (td->filetype == FIO_TYPE_FILE)
166 ret = file_size(td, f);
167 else if (td->filetype == FIO_TYPE_BD)
168 ret = bdev_size(td, f);
170 f->real_file_size = -1;
175 if (f->file_offset > f->real_file_size) {
176 log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
183 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
188 * FIXME: add blockdev flushing too
190 if (td->io_ops->flags & FIO_MMAPIO)
191 ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
192 else if (td->filetype == FIO_TYPE_FILE)
193 ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
194 else if (td->filetype == FIO_TYPE_BD)
195 ret = blockdev_invalidate_cache(f->fd);
196 else if (td->filetype == FIO_TYPE_CHAR)
200 td_verror(td, errno);
207 static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
212 flags = PROT_READ | PROT_WRITE;
213 else if (td_write(td)) {
216 if (td->verify != VERIFY_NONE)
221 f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
222 if (f->mmap == MAP_FAILED) {
224 td_verror(td, errno);
228 if (td->invalidate_cache && file_invalidate_cache(td, f))
231 if (td->sequential) {
232 if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
233 td_verror(td, errno);
237 if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
238 td_verror(td, errno);
246 static int setup_files_mmap(struct thread_data *td)
251 for_each_file(td, f, i) {
252 err = __setup_file_mmap(td, f);
260 static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
262 if (td->invalidate_cache && file_invalidate_cache(td, f))
265 if (td->sequential) {
266 if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
267 td_verror(td, errno);
271 if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
272 td_verror(td, errno);
280 static int setup_files_plain(struct thread_data *td)
285 for_each_file(td, f, i) {
286 err = __setup_file_plain(td, f);
294 static int setup_file(struct thread_data *td, struct fio_file *f)
299 flags |= OS_O_DIRECT;
301 if (td_write(td) || td_rw(td)) {
302 if (td->filetype == FIO_TYPE_FILE) {
313 f->fd = open(f->file_name, flags, 0600);
315 if (td->filetype == FIO_TYPE_CHAR)
320 f->fd = open(f->file_name, flags);
324 td_verror(td, errno);
328 if (get_file_size(td, f))
334 int setup_files(struct thread_data *td)
340 * if ioengine defines a setup() method, it's responsible for
341 * setting up everything in the td->files[] area.
343 if (td->io_ops->setup)
344 return td->io_ops->setup(td);
346 if (create_files(td))
349 for_each_file(td, f, i) {
350 err = setup_file(td, f);
355 if (td->io_size == 0) {
356 log_err("%s: no io blocks\n", td->name);
357 td_verror(td, EINVAL);
362 td->zone_size = td->io_size;
364 td->total_io_size = td->io_size * td->loops;
366 if (td->io_ops->flags & FIO_MMAPIO)
367 return setup_files_mmap(td);
369 return setup_files_plain(td);
372 void close_files(struct thread_data *td)
377 for_each_file(td, f, i) {
379 if (td->unlink && td->filetype == FIO_TYPE_FILE)
380 unlink(f->file_name);
385 munmap(f->mmap, f->file_size);