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 td->io_size = td->total_file_size;
90 for_each_file(td, f, i)
91 f->file_size = td->total_file_size / td->nr_files;
96 if (!td->total_file_size) {
97 log_err("Need size for create\n");
98 td_verror(td, EINVAL);
103 fprintf(f_out, "%s: Laying out IO file(s) (%LuMiB)\n",
104 td->name, td->total_file_size >> 20);
107 for_each_file(td, f, i) {
108 f->file_size = td->total_file_size / td->nr_files;
109 err = create_file(td, f);
113 td->io_size += f->file_size;
120 static int file_size(struct thread_data *td, struct fio_file *f)
125 if (fstat(f->fd, &st) == -1) {
126 td_verror(td, errno);
130 f->real_file_size = st.st_size;
132 if (!f->file_size || f->file_size > f->real_file_size)
133 f->file_size = f->real_file_size;
136 f->file_size -= f->file_offset;
140 static int bdev_size(struct thread_data *td, struct fio_file *f)
142 unsigned long long bytes;
145 r = blockdev_size(f->fd, &bytes);
151 f->real_file_size = bytes;
154 * no extend possibilities, so limit size to device size if too large
156 if (!f->file_size || f->file_size > f->real_file_size)
157 f->file_size = f->real_file_size;
159 f->file_size -= f->file_offset;
163 static int get_file_size(struct thread_data *td, struct fio_file *f)
167 if (td->filetype == FIO_TYPE_FILE)
168 ret = file_size(td, f);
169 else if (td->filetype == FIO_TYPE_BD)
170 ret = bdev_size(td, f);
172 f->real_file_size = -1;
177 if (f->file_offset > f->real_file_size) {
178 log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
182 td->io_size += f->file_size;
186 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
191 * FIXME: add blockdev flushing too
193 if (td->io_ops->flags & FIO_MMAPIO)
194 ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
195 else if (td->filetype == FIO_TYPE_FILE)
196 ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
197 else if (td->filetype == FIO_TYPE_BD)
198 ret = blockdev_invalidate_cache(f->fd);
199 else if (td->filetype == FIO_TYPE_CHAR)
203 td_verror(td, errno);
210 static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
215 flags = PROT_READ | PROT_WRITE;
216 else if (td_write(td)) {
219 if (td->verify != VERIFY_NONE)
224 f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
225 if (f->mmap == MAP_FAILED) {
227 td_verror(td, errno);
231 if (td->invalidate_cache && file_invalidate_cache(td, f))
234 if (td->sequential) {
235 if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
236 td_verror(td, errno);
240 if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
241 td_verror(td, errno);
249 static int setup_files_mmap(struct thread_data *td)
254 for_each_file(td, f, i) {
255 err = __setup_file_mmap(td, f);
263 static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
265 if (td->invalidate_cache && file_invalidate_cache(td, f))
268 if (td->sequential) {
269 if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
270 td_verror(td, errno);
274 if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
275 td_verror(td, errno);
283 static int setup_files_plain(struct thread_data *td)
288 for_each_file(td, f, i) {
289 err = __setup_file_plain(td, f);
297 static int setup_file(struct thread_data *td, struct fio_file *f)
302 flags |= OS_O_DIRECT;
304 if (td_write(td) || td_rw(td)) {
305 if (td->filetype == FIO_TYPE_FILE) {
316 f->fd = open(f->file_name, flags, 0600);
318 if (td->filetype == FIO_TYPE_CHAR)
323 f->fd = open(f->file_name, flags);
327 td_verror(td, errno);
331 if (get_file_size(td, f))
337 int setup_files(struct thread_data *td)
343 * if ioengine defines a setup() method, it's responsible for
344 * setting up everything in the td->files[] area.
346 if (td->io_ops->setup)
347 return td->io_ops->setup(td);
349 if (create_files(td))
352 for_each_file(td, f, i) {
353 err = setup_file(td, f);
358 if (td->io_size == 0) {
359 log_err("%s: no io blocks\n", td->name);
360 td_verror(td, EINVAL);
365 td->zone_size = td->io_size;
367 td->total_io_size = td->io_size * td->loops;
369 if (td->io_ops->flags & FIO_MMAPIO)
370 return setup_files_mmap(td);
372 return setup_files_plain(td);
375 void close_files(struct thread_data *td)
380 for_each_file(td, f, i) {
382 if (td->unlink && td->filetype == FIO_TYPE_FILE)
383 unlink(f->file_name);
388 munmap(f->mmap, f->file_size);