17 #include "lib/axmap.h"
19 #ifdef CONFIG_LINUX_FALLOCATE
20 #include <linux/falloc.h>
25 static FLIST_HEAD(filename_list);
27 static inline void clear_error(struct thread_data *td)
34 * Leaves f->fd open on success, caller must close
36 static int extend_file(struct thread_data *td, struct fio_file *f)
38 int r, new_layout = 0, unlink_file = 0, flags;
39 unsigned long long left;
44 log_err("fio: refusing extend of file due to read-only\n");
49 * check if we need to lay the file out complete again. fio
50 * does that for operations involving reads, or for writes
51 * where overwrite is set
54 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
55 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
57 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
60 if (unlink_file || new_layout) {
63 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
65 ret = td_io_unlink_file(td, f);
66 if (ret != 0 && ret != ENOENT) {
67 td_verror(td, errno, "unlink");
73 if (td->o.allow_create)
82 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
83 f->fd = open(f->file_name, flags, 0644);
87 if (err == ENOENT && !td->o.allow_create)
88 log_err("fio: file creation disallowed by "
89 "allow_file_create=0\n");
91 td_verror(td, err, "open");
95 #ifdef CONFIG_POSIX_FALLOCATE
96 if (!td->o.fill_device) {
97 switch (td->o.fallocate_mode) {
98 case FIO_FALLOCATE_NONE:
100 case FIO_FALLOCATE_POSIX:
101 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
103 (unsigned long long) f->real_file_size);
105 r = posix_fallocate(f->fd, 0, f->real_file_size);
107 log_err("fio: posix_fallocate fails: %s\n",
111 #ifdef CONFIG_LINUX_FALLOCATE
112 case FIO_FALLOCATE_KEEP_SIZE:
114 "fallocate(FALLOC_FL_KEEP_SIZE) "
115 "file %s size %llu\n", f->file_name,
116 (unsigned long long) f->real_file_size);
118 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
121 td_verror(td, errno, "fallocate");
124 #endif /* CONFIG_LINUX_FALLOCATE */
126 log_err("fio: unknown fallocate mode: %d\n",
127 td->o.fallocate_mode);
131 #endif /* CONFIG_POSIX_FALLOCATE */
137 * The size will be -1ULL when fill_device is used, so don't truncate
138 * or fallocate this file, just write it
140 if (!td->o.fill_device) {
141 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
142 (unsigned long long) f->real_file_size);
143 if (ftruncate(f->fd, f->real_file_size) == -1) {
144 if (errno != EFBIG) {
145 td_verror(td, errno, "ftruncate");
151 b = malloc(td->o.max_bs[DDIR_WRITE]);
153 left = f->real_file_size;
154 while (left && !td->terminate) {
155 bs = td->o.max_bs[DDIR_WRITE];
159 fill_io_buffer(td, b, bs, bs);
161 r = write(f->fd, b, bs);
171 if (td->o.fill_device)
173 log_info("fio: ENOSPC on laying out "
177 td_verror(td, errno, "write");
179 td_verror(td, EIO, "write");
186 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
187 td_io_unlink_file(td, f);
188 } else if (td->o.create_fsync) {
189 if (fsync(f->fd) < 0) {
190 td_verror(td, errno, "fsync");
194 if (td->o.fill_device && !td_write(td)) {
195 fio_file_clear_size_known(f);
196 if (td_io_get_file_size(td, f))
198 if (f->io_size > f->real_file_size)
199 f->io_size = f->real_file_size;
213 static int pre_read_file(struct thread_data *td, struct fio_file *f)
215 int ret = 0, r, did_open = 0, old_runstate;
216 unsigned long long left;
220 if (td_ioengine_flagged(td, FIO_PIPEIO))
223 if (!fio_file_open(f)) {
224 if (td->io_ops->open_file(td, f)) {
225 log_err("fio: cannot pre-read, failed to open file\n");
231 old_runstate = td_bump_runstate(td, TD_PRE_READING);
233 bs = td->o.max_bs[DDIR_READ];
237 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
238 td_verror(td, errno, "lseek");
239 log_err("fio: failed to lseek pre-read file\n");
246 while (left && !td->terminate) {
250 r = read(f->fd, b, bs);
256 td_verror(td, EIO, "pre_read");
262 td_restore_runstate(td, old_runstate);
265 td->io_ops->close_file(td, f);
271 unsigned long long get_rand_file_size(struct thread_data *td)
273 unsigned long long ret, sized;
277 frand_max = rand_max(&td->file_size_state);
278 r = __rand(&td->file_size_state);
279 sized = td->o.file_size_high - td->o.file_size_low;
280 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
281 ret += td->o.file_size_low;
282 ret -= (ret % td->o.rw_min_bs);
286 static int file_size(struct thread_data *td, struct fio_file *f)
290 if (stat(f->file_name, &st) == -1) {
291 td_verror(td, errno, "fstat");
295 f->real_file_size = st.st_size;
299 static int bdev_size(struct thread_data *td, struct fio_file *f)
301 unsigned long long bytes = 0;
304 if (td->io_ops->open_file(td, f)) {
305 log_err("fio: failed opening blockdev %s for size check\n",
310 r = blockdev_size(f, &bytes);
312 td_verror(td, r, "blockdev_size");
317 log_err("%s: zero sized block device?\n", f->file_name);
321 f->real_file_size = bytes;
322 td->io_ops->close_file(td, f);
325 td->io_ops->close_file(td, f);
329 static int char_size(struct thread_data *td, struct fio_file *f)
331 #ifdef FIO_HAVE_CHARDEV_SIZE
332 unsigned long long bytes = 0;
335 if (td->io_ops->open_file(td, f)) {
336 log_err("fio: failed opening chardev %s for size check\n",
341 r = chardev_size(f, &bytes);
343 td_verror(td, r, "chardev_size");
348 log_err("%s: zero sized char device?\n", f->file_name);
352 f->real_file_size = bytes;
353 td->io_ops->close_file(td, f);
356 td->io_ops->close_file(td, f);
359 f->real_file_size = -1ULL;
364 static int get_file_size(struct thread_data *td, struct fio_file *f)
368 if (fio_file_size_known(f))
371 if (f->filetype == FIO_TYPE_FILE)
372 ret = file_size(td, f);
373 else if (f->filetype == FIO_TYPE_BLOCK)
374 ret = bdev_size(td, f);
375 else if (f->filetype == FIO_TYPE_CHAR)
376 ret = char_size(td, f);
378 f->real_file_size = -1;
383 if (f->file_offset > f->real_file_size) {
384 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
385 (unsigned long long) f->file_offset,
386 (unsigned long long) f->real_file_size);
390 fio_file_set_size_known(f);
394 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
395 unsigned long long off,
396 unsigned long long len)
398 int errval = 0, ret = 0;
407 off = f->file_offset;
409 if (len == -1ULL || off == -1ULL)
412 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
415 if (td->io_ops->invalidate) {
416 ret = td->io_ops->invalidate(td, f);
419 } else if (f->filetype == FIO_TYPE_FILE) {
420 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
423 } else if (f->filetype == FIO_TYPE_BLOCK) {
426 ret = blockdev_invalidate_cache(f);
427 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
429 * Linux multipath devices reject ioctl while
430 * the maps are being updated. That window can
431 * last tens of milliseconds; we'll try up to
432 * a quarter of a second.
435 ret = blockdev_invalidate_cache(f);
437 if (ret < 0 && errno == EACCES && geteuid()) {
439 log_err("fio: only root may flush block "
440 "devices. Cache flush bypassed!\n");
447 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
451 * Cache flushing isn't a fatal condition, and we know it will
452 * happen on some platforms where we don't have the proper
453 * function to flush eg block device caches. So just warn and
454 * continue on our way.
457 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
463 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
465 if (!fio_file_open(f))
468 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
471 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
475 dprint(FD_FILE, "fd close %s\n", f->file_name);
479 if (close(f->fd) < 0)
484 if (f->shadow_fd != -1) {
493 int file_lookup_open(struct fio_file *f, int flags)
495 struct fio_file *__f;
498 __f = lookup_file_hash(f->file_name);
500 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
504 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
512 f->fd = open(f->file_name, flags, 0600);
516 static int file_close_shadow_fds(struct thread_data *td)
522 for_each_file(td, f, i) {
523 if (f->shadow_fd == -1)
534 int generic_open_file(struct thread_data *td, struct fio_file *f)
540 dprint(FD_FILE, "fd open %s\n", f->file_name);
542 if (!strcmp(f->file_name, "-")) {
544 log_err("fio: can't read/write to stdin/out\n");
550 * move output logging to stderr, if we are writing to stdout
559 flags |= OS_O_DIRECT;
562 td_verror(td, EINVAL, "OS does not support atomic IO");
565 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
569 if (td->o.create_on_open && td->o.allow_create)
572 if (f->filetype != FIO_TYPE_FILE)
573 flags |= FIO_O_NOATIME;
580 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
584 f->fd = dup(STDOUT_FILENO);
586 from_hash = file_lookup_open(f, flags);
587 } else if (td_read(td)) {
588 if (f->filetype == FIO_TYPE_CHAR && !read_only)
594 f->fd = dup(STDIN_FILENO);
596 from_hash = file_lookup_open(f, flags);
599 from_hash = file_lookup_open(f, flags);
603 char buf[FIO_VERROR_SIZE];
606 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
607 flags &= ~FIO_O_NOATIME;
610 if (__e == EMFILE && file_close_shadow_fds(td))
613 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
615 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
616 log_err("fio: looks like your file system does not " \
617 "support direct=1/buffered=0\n");
620 td_verror(td, __e, buf);
624 if (!from_hash && f->fd != -1) {
625 if (add_file_hash(f)) {
629 * Stash away descriptor for later close. This is to
630 * work-around a "feature" on Linux, where a close of
631 * an fd that has been opened for write will trigger
632 * udev to call blkid to check partitions, fs id, etc.
633 * That pollutes the device cache, which can slow down
634 * unbuffered accesses.
636 if (f->shadow_fd == -1)
637 f->shadow_fd = f->fd;
640 * OK to ignore, we haven't done anything
643 ret = generic_close_file(td, f);
652 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
654 return get_file_size(td, f);
658 * open/close all files, so that ->real_file_size gets set
660 static int get_file_sizes(struct thread_data *td)
666 for_each_file(td, f, i) {
667 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
670 if (td_io_get_file_size(td, f)) {
671 if (td->error != ENOENT) {
672 log_err("%s\n", td->verror);
679 if (f->real_file_size == -1ULL && td->o.size)
680 f->real_file_size = td->o.size / td->o.nr_files;
687 struct flist_head list;
694 * Get free number of bytes for each file on each unique mount.
696 static unsigned long long get_fs_free_counts(struct thread_data *td)
698 struct flist_head *n, *tmp;
699 unsigned long long ret = 0;
700 struct fio_mount *fm;
705 for_each_file(td, f, i) {
709 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
710 if (f->real_file_size != -1ULL)
711 ret += f->real_file_size;
713 } else if (f->filetype != FIO_TYPE_FILE)
717 strncpy(buf, f->file_name, 255);
719 if (stat(buf, &sb) < 0) {
723 if (stat(buf, &sb) < 0)
728 flist_for_each(n, &list) {
729 fm = flist_entry(n, struct fio_mount, list);
730 if (fm->key == sb.st_dev)
739 fm = calloc(1, sizeof(*fm));
740 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
741 fm->base = basename(fm->__base);
743 flist_add(&fm->list, &list);
746 flist_for_each_safe(n, tmp, &list) {
747 unsigned long long sz;
749 fm = flist_entry(n, struct fio_mount, list);
750 flist_del(&fm->list);
752 sz = get_fs_free_size(fm->base);
753 if (sz && sz != -1ULL)
762 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
764 struct thread_options *o = &td->o;
766 if (o->file_append && f->filetype == FIO_TYPE_FILE)
767 return f->real_file_size;
769 return td->o.start_offset +
770 td->subjob_number * td->o.offset_increment;
774 * Open the files and setup files sizes, creating files if necessary.
776 int setup_files(struct thread_data *td)
778 unsigned long long total_size, extend_size;
779 struct thread_options *o = &td->o;
781 unsigned int i, nr_fs_extra = 0;
782 int err = 0, need_extend;
784 const unsigned int bs = td_min_bs(td);
787 dprint(FD_FILE, "setup files\n");
789 old_state = td_bump_runstate(td, TD_SETTING_UP);
791 if (o->read_iolog_file)
795 * if ioengine defines a setup() method, it's responsible for
796 * opening the files and setting f->real_file_size to indicate
797 * the valid range for that file.
799 if (td->io_ops->setup)
800 err = td->io_ops->setup(td);
802 err = get_file_sizes(td);
808 * check sizes. if the files/devices do not exist and the size
809 * isn't passed to fio, abort.
812 for_each_file(td, f, i) {
814 if (f->real_file_size == -1ULL)
817 total_size += f->real_file_size;
821 td->fill_device_size = get_fs_free_counts(td);
824 * device/file sizes are zero and no size given, punt
826 if ((!total_size || total_size == -1ULL) && !o->size &&
827 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
828 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
829 log_err("%s: you need to specify size=\n", o->name);
830 td_verror(td, EINVAL, "total_file_size");
835 * Calculate per-file size and potential extra size for the
836 * first files, if needed.
838 if (!o->file_size_low && o->nr_files) {
841 fs = o->size / o->nr_files;
842 all_fs = fs * o->nr_files;
844 if (all_fs < o->size)
845 nr_fs_extra = (o->size - all_fs) / bs;
849 * now file sizes are known, so we can set ->io_size. if size= is
850 * not given, ->io_size is just equal to ->real_file_size. if size
851 * is given, ->io_size is size / nr_files.
853 extend_size = total_size = 0;
855 for_each_file(td, f, i) {
856 f->file_offset = get_start_offset(td, f);
858 if (!o->file_size_low) {
860 * no file size range given, file size is equal to
861 * total size divided by number of files. If that is
862 * zero, set it to the real file size. If the size
863 * doesn't divide nicely with the min blocksize,
864 * make the first files bigger.
873 f->io_size = f->real_file_size - f->file_offset;
874 } else if (f->real_file_size < o->file_size_low ||
875 f->real_file_size > o->file_size_high) {
876 if (f->file_offset > o->file_size_low)
879 * file size given. if it's fixed, use that. if it's a
880 * range, generate a random size in-between.
882 if (o->file_size_low == o->file_size_high)
883 f->io_size = o->file_size_low - f->file_offset;
885 f->io_size = get_rand_file_size(td)
889 f->io_size = f->real_file_size - f->file_offset;
891 if (f->io_size == -1ULL)
894 if (o->size_percent) {
895 f->io_size = (f->io_size * o->size_percent) / 100;
896 f->io_size -= (f->io_size % td_min_bs(td));
898 total_size += f->io_size;
901 if (f->filetype == FIO_TYPE_FILE &&
902 (f->io_size + f->file_offset) > f->real_file_size &&
903 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
904 if (!o->create_on_open) {
906 extend_size += (f->io_size + f->file_offset);
908 f->real_file_size = f->io_size + f->file_offset;
909 fio_file_set_extend(f);
913 if (td->o.block_error_hist) {
916 assert(td->o.nr_files == 1); /* checked in fixup_options */
918 len = f->io_size / td->o.bs[DDIR_TRIM];
919 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
920 log_err("fio: cannot calculate block histogram with "
921 "%d trim blocks, maximum %d\n",
922 len, MAX_NR_BLOCK_INFOS);
923 td_verror(td, EINVAL, "block_error_hist");
927 td->ts.nr_block_infos = len;
928 for (i = 0; i < len; i++)
929 td->ts.block_infos[i] =
930 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
932 td->ts.nr_block_infos = 0;
934 if (!o->size || (total_size && o->size > total_size))
935 o->size = total_size;
937 if (o->size < td_min_bs(td)) {
938 log_err("fio: blocksize too large for data set\n");
943 * See if we need to extend some files
947 if (output_format & FIO_OUTPUT_NORMAL)
948 log_info("%s: Laying out IO file(s) (%u file(s) / %lluMiB)\n",
949 o->name, need_extend, extend_size >> 20);
951 for_each_file(td, f, i) {
952 unsigned long long old_len = -1ULL, extend_len = -1ULL;
954 if (!fio_file_extend(f))
957 assert(f->filetype == FIO_TYPE_FILE);
958 fio_file_clear_extend(f);
959 if (!o->fill_device) {
960 old_len = f->real_file_size;
961 extend_len = f->io_size + f->file_offset -
964 f->real_file_size = (f->io_size + f->file_offset);
965 err = extend_file(td, f);
969 err = __file_invalidate_cache(td, f, old_len,
973 * Shut up static checker
989 o->zone_size = o->size;
992 * iolog already set the total io size, if we read back
995 if (!o->read_iolog_file) {
997 td->total_io_size = o->io_limit * o->loops;
999 td->total_io_size = o->size * o->loops;
1006 td_restore_runstate(td, old_state);
1009 log_err("%s: you need to specify valid offset=\n", o->name);
1011 td_restore_runstate(td, old_state);
1015 int pre_read_files(struct thread_data *td)
1020 dprint(FD_FILE, "pre_read files\n");
1022 for_each_file(td, f, i) {
1023 pre_read_file(td, f);
1029 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1031 unsigned int range_size, seed;
1032 unsigned long nranges;
1035 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1036 fsize = min(f->real_file_size, f->io_size);
1038 nranges = (fsize + range_size - 1) / range_size;
1040 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1041 if (!td->o.rand_repeatable)
1042 seed = td->rand_seeds[4];
1044 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1045 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1046 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1047 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1048 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1049 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1054 static int init_rand_distribution(struct thread_data *td)
1060 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1063 state = td_bump_runstate(td, TD_SETTING_UP);
1065 for_each_file(td, f, i)
1066 __init_rand_distribution(td, f);
1068 td_restore_runstate(td, state);
1074 * Check if the number of blocks exceeds the randomness capability of
1075 * the selected generator. Tausworthe is 32-bit, the others are fullly
1078 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1081 if (blocks <= FRAND32_MAX)
1083 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1087 * If the user hasn't specified a random generator, switch
1088 * to tausworthe64 with informational warning. If the user did
1089 * specify one, just warn.
1091 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1094 if (!fio_option_is_set(&td->o, random_generator)) {
1095 log_info("fio: Switching to tausworthe64. Use the "
1096 "random_generator= option to get rid of this "
1098 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1103 * Just make this information to avoid breaking scripts.
1105 log_info("fio: Use the random_generator= option to switch to lfsr or "
1110 int init_random_map(struct thread_data *td)
1112 unsigned long long blocks;
1116 if (init_rand_distribution(td))
1121 for_each_file(td, f, i) {
1122 uint64_t fsize = min(f->real_file_size, f->io_size);
1124 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1126 if (check_rand_gen_limits(td, f, blocks))
1129 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1132 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1134 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1135 fio_file_set_lfsr(f);
1138 } else if (!td->o.norandommap) {
1139 f->io_axmap = axmap_new(blocks);
1141 fio_file_set_axmap(f);
1144 } else if (td->o.norandommap)
1147 if (!td->o.softrandommap) {
1148 log_err("fio: failed allocating random map. If running"
1149 " a large number of jobs, try the 'norandommap'"
1150 " option or set 'softrandommap'. Or give"
1151 " a larger --alloc-size to fio.\n");
1155 log_info("fio: file %s failed allocating random map. Running "
1156 "job without.\n", f->file_name);
1162 void close_files(struct thread_data *td)
1167 for_each_file(td, f, i) {
1168 if (fio_file_open(f))
1169 td_io_close_file(td, f);
1173 void close_and_free_files(struct thread_data *td)
1178 dprint(FD_FILE, "close files\n");
1180 for_each_file(td, f, i) {
1181 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1182 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1183 td_io_unlink_file(td, f);
1186 if (fio_file_open(f))
1187 td_io_close_file(td, f);
1189 remove_file_hash(f);
1191 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1192 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1193 td_io_unlink_file(td, f);
1196 sfree(f->file_name);
1197 f->file_name = NULL;
1198 if (fio_file_axmap(f)) {
1199 axmap_free(f->io_axmap);
1205 td->o.filename = NULL;
1207 free(td->file_locks);
1208 td->files_index = 0;
1210 td->file_locks = NULL;
1211 td->o.file_lock_mode = FILE_LOCK_NONE;
1215 static void get_file_type(struct fio_file *f)
1219 if (!strcmp(f->file_name, "-"))
1220 f->filetype = FIO_TYPE_PIPE;
1222 f->filetype = FIO_TYPE_FILE;
1225 /* \\.\ is the device namespace in Windows, where every file is
1227 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1228 f->filetype = FIO_TYPE_BLOCK;
1231 if (!stat(f->file_name, &sb)) {
1232 if (S_ISBLK(sb.st_mode))
1233 f->filetype = FIO_TYPE_BLOCK;
1234 else if (S_ISCHR(sb.st_mode))
1235 f->filetype = FIO_TYPE_CHAR;
1236 else if (S_ISFIFO(sb.st_mode))
1237 f->filetype = FIO_TYPE_PIPE;
1241 static bool __is_already_allocated(const char *fname, bool set)
1243 struct flist_head *entry;
1246 ret = file_bloom_exists(fname, set);
1250 flist_for_each(entry, &filename_list) {
1251 struct file_name *fn;
1253 fn = flist_entry(entry, struct file_name, list);
1255 if (!strcmp(fn->filename, fname))
1262 static bool is_already_allocated(const char *fname)
1266 fio_file_hash_lock();
1267 ret = __is_already_allocated(fname, false);
1268 fio_file_hash_unlock();
1273 static void set_already_allocated(const char *fname)
1275 struct file_name *fn;
1277 fn = malloc(sizeof(struct file_name));
1278 fn->filename = strdup(fname);
1280 fio_file_hash_lock();
1281 if (!__is_already_allocated(fname, true)) {
1282 flist_add_tail(&fn->list, &filename_list);
1285 fio_file_hash_unlock();
1293 static void free_already_allocated(void)
1295 struct flist_head *entry, *tmp;
1296 struct file_name *fn;
1298 if (flist_empty(&filename_list))
1301 fio_file_hash_lock();
1302 flist_for_each_safe(entry, tmp, &filename_list) {
1303 fn = flist_entry(entry, struct file_name, list);
1305 flist_del(&fn->list);
1309 fio_file_hash_unlock();
1312 static struct fio_file *alloc_new_file(struct thread_data *td)
1316 f = smalloc(sizeof(*f));
1324 fio_file_reset(td, f);
1328 bool exists_and_not_regfile(const char *filename)
1332 if (lstat(filename, &sb) == -1)
1335 #ifndef WIN32 /* NOT Windows */
1336 if (S_ISREG(sb.st_mode))
1339 /* \\.\ is the device namespace in Windows, where every file
1340 * is a device node */
1341 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1348 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1350 int cur_files = td->files_index;
1351 char file_name[PATH_MAX];
1355 dprint(FD_FILE, "add file %s\n", fname);
1357 if (td->o.directory)
1358 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1359 td->o.unique_filename);
1361 sprintf(file_name + len, "%s", fname);
1363 /* clean cloned siblings using existing files */
1364 if (numjob && is_already_allocated(file_name) &&
1365 !exists_and_not_regfile(fname))
1368 f = alloc_new_file(td);
1370 if (td->files_size <= td->files_index) {
1371 unsigned int new_size = td->o.nr_files + 1;
1373 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1375 td->files = realloc(td->files, new_size * sizeof(f));
1376 if (td->files == NULL) {
1377 log_err("fio: realloc OOM\n");
1380 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1381 td->file_locks = realloc(td->file_locks, new_size);
1382 if (!td->file_locks) {
1383 log_err("fio: realloc OOM\n");
1386 td->file_locks[cur_files] = FILE_LOCK_NONE;
1388 td->files_size = new_size;
1390 td->files[cur_files] = f;
1391 f->fileno = cur_files;
1394 * init function, io engine may not be loaded yet
1396 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1397 f->real_file_size = -1ULL;
1399 f->file_name = smalloc_strdup(file_name);
1405 switch (td->o.file_lock_mode) {
1406 case FILE_LOCK_NONE:
1408 case FILE_LOCK_READWRITE:
1409 f->rwlock = fio_rwlock_init();
1411 case FILE_LOCK_EXCLUSIVE:
1412 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1415 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1420 if (f->filetype == FIO_TYPE_FILE)
1421 td->nr_normal_files++;
1423 set_already_allocated(file_name);
1428 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1434 int add_file_exclusive(struct thread_data *td, const char *fname)
1439 for_each_file(td, f, i) {
1440 if (!strcmp(f->file_name, fname))
1444 return add_file(td, fname, 0, 1);
1447 void get_file(struct fio_file *f)
1449 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1450 assert(fio_file_open(f));
1454 int put_file(struct thread_data *td, struct fio_file *f)
1456 int f_ret = 0, ret = 0;
1458 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1460 if (!fio_file_open(f)) {
1461 assert(f->fd == -1);
1465 assert(f->references);
1466 if (--f->references)
1469 if (should_fsync(td) && td->o.fsync_on_close) {
1470 f_ret = fsync(f->fd);
1475 if (td->io_ops->close_file)
1476 ret = td->io_ops->close_file(td, f);
1481 td->nr_open_files--;
1482 fio_file_clear_open(f);
1483 assert(f->fd == -1);
1487 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1489 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1492 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1493 if (ddir == DDIR_READ)
1494 fio_rwlock_read(f->rwlock);
1496 fio_rwlock_write(f->rwlock);
1497 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1498 fio_mutex_down(f->lock);
1500 td->file_locks[f->fileno] = td->o.file_lock_mode;
1503 void unlock_file(struct thread_data *td, struct fio_file *f)
1505 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1508 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1509 fio_rwlock_unlock(f->rwlock);
1510 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1511 fio_mutex_up(f->lock);
1513 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1516 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1518 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1520 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1524 static int recurse_dir(struct thread_data *td, const char *dirname)
1530 D = opendir(dirname);
1532 char buf[FIO_VERROR_SIZE];
1534 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1535 td_verror(td, errno, buf);
1539 while ((dir = readdir(D)) != NULL) {
1540 char full_path[PATH_MAX];
1543 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1546 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1548 if (lstat(full_path, &sb) == -1) {
1549 if (errno != ENOENT) {
1550 td_verror(td, errno, "stat");
1556 if (S_ISREG(sb.st_mode)) {
1557 add_file(td, full_path, 0, 1);
1560 if (!S_ISDIR(sb.st_mode))
1563 ret = recurse_dir(td, full_path);
1572 int add_dir_files(struct thread_data *td, const char *path)
1574 int ret = recurse_dir(td, path);
1577 log_info("fio: opendir added %d files\n", td->o.nr_files);
1582 void dup_files(struct thread_data *td, struct thread_data *org)
1587 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1592 td->files = malloc(org->files_index * sizeof(f));
1594 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1595 td->file_locks = malloc(org->files_index);
1597 for_each_file(org, f, i) {
1598 struct fio_file *__f;
1600 __f = alloc_new_file(td);
1603 __f->file_name = smalloc_strdup(f->file_name);
1604 if (!__f->file_name)
1607 __f->filetype = f->filetype;
1610 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1611 __f->lock = f->lock;
1612 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1613 __f->rwlock = f->rwlock;
1620 * Returns the index that matches the filename, or -1 if not there
1622 int get_fileno(struct thread_data *td, const char *fname)
1627 for_each_file(td, f, i)
1628 if (!strcmp(f->file_name, fname))
1635 * For log usage, where we add/open/close files automatically
1637 void free_release_files(struct thread_data *td)
1641 td->o.open_files = 0;
1642 td->files_index = 0;
1643 td->nr_normal_files = 0;
1646 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1650 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1651 f->last_pos[i] = f->file_offset;
1652 f->last_start[i] = -1ULL;
1655 if (fio_file_axmap(f))
1656 axmap_reset(f->io_axmap);
1657 else if (fio_file_lfsr(f))
1658 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1661 bool fio_files_done(struct thread_data *td)
1666 for_each_file(td, f, i)
1667 if (!fio_file_done(f))
1673 /* free memory used in initialization phase only */
1674 void filesetup_mem_free(void)
1676 free_already_allocated();