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->io_ops->flags & FIO_NOEXTEND))
57 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
60 if (unlink_file || new_layout) {
61 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
62 if ((td_io_unlink_file(td, f) < 0) && (errno != ENOENT)) {
63 td_verror(td, errno, "unlink");
69 if (td->o.allow_create)
78 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
79 f->fd = open(f->file_name, flags, 0644);
83 if (err == ENOENT && !td->o.allow_create)
84 log_err("fio: file creation disallowed by "
85 "allow_file_create=0\n");
87 td_verror(td, err, "open");
91 #ifdef CONFIG_POSIX_FALLOCATE
92 if (!td->o.fill_device) {
93 switch (td->o.fallocate_mode) {
94 case FIO_FALLOCATE_NONE:
96 case FIO_FALLOCATE_POSIX:
97 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
99 (unsigned long long) f->real_file_size);
101 r = posix_fallocate(f->fd, 0, f->real_file_size);
103 log_err("fio: posix_fallocate fails: %s\n",
107 #ifdef CONFIG_LINUX_FALLOCATE
108 case FIO_FALLOCATE_KEEP_SIZE:
110 "fallocate(FALLOC_FL_KEEP_SIZE) "
111 "file %s size %llu\n", f->file_name,
112 (unsigned long long) f->real_file_size);
114 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
117 td_verror(td, errno, "fallocate");
120 #endif /* CONFIG_LINUX_FALLOCATE */
122 log_err("fio: unknown fallocate mode: %d\n",
123 td->o.fallocate_mode);
127 #endif /* CONFIG_POSIX_FALLOCATE */
133 * The size will be -1ULL when fill_device is used, so don't truncate
134 * or fallocate this file, just write it
136 if (!td->o.fill_device) {
137 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
138 (unsigned long long) f->real_file_size);
139 if (ftruncate(f->fd, f->real_file_size) == -1) {
140 if (errno != EFBIG) {
141 td_verror(td, errno, "ftruncate");
147 b = malloc(td->o.max_bs[DDIR_WRITE]);
149 left = f->real_file_size;
150 while (left && !td->terminate) {
151 bs = td->o.max_bs[DDIR_WRITE];
155 fill_io_buffer(td, b, bs, bs);
157 r = write(f->fd, b, bs);
167 if (td->o.fill_device)
169 log_info("fio: ENOSPC on laying out "
173 td_verror(td, errno, "write");
175 td_verror(td, EIO, "write");
182 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
183 td_io_unlink_file(td, f);
184 } else if (td->o.create_fsync) {
185 if (fsync(f->fd) < 0) {
186 td_verror(td, errno, "fsync");
190 if (td->o.fill_device && !td_write(td)) {
191 fio_file_clear_size_known(f);
192 if (td_io_get_file_size(td, f))
194 if (f->io_size > f->real_file_size)
195 f->io_size = f->real_file_size;
209 static int pre_read_file(struct thread_data *td, struct fio_file *f)
211 int ret = 0, r, did_open = 0, old_runstate;
212 unsigned long long left;
216 if (td->io_ops->flags & FIO_PIPEIO)
219 if (!fio_file_open(f)) {
220 if (td->io_ops->open_file(td, f)) {
221 log_err("fio: cannot pre-read, failed to open file\n");
227 old_runstate = td_bump_runstate(td, TD_PRE_READING);
229 bs = td->o.max_bs[DDIR_READ];
233 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
234 td_verror(td, errno, "lseek");
235 log_err("fio: failed to lseek pre-read file\n");
242 while (left && !td->terminate) {
246 r = read(f->fd, b, bs);
252 td_verror(td, EIO, "pre_read");
258 td_restore_runstate(td, old_runstate);
261 td->io_ops->close_file(td, f);
267 unsigned long long get_rand_file_size(struct thread_data *td)
269 unsigned long long ret, sized;
273 frand_max = rand_max(&td->file_size_state);
274 r = __rand(&td->file_size_state);
275 sized = td->o.file_size_high - td->o.file_size_low;
276 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
277 ret += td->o.file_size_low;
278 ret -= (ret % td->o.rw_min_bs);
282 static int file_size(struct thread_data *td, struct fio_file *f)
286 if (stat(f->file_name, &st) == -1) {
287 td_verror(td, errno, "fstat");
291 f->real_file_size = st.st_size;
295 static int bdev_size(struct thread_data *td, struct fio_file *f)
297 unsigned long long bytes = 0;
300 if (td->io_ops->open_file(td, f)) {
301 log_err("fio: failed opening blockdev %s for size check\n",
306 r = blockdev_size(f, &bytes);
308 td_verror(td, r, "blockdev_size");
313 log_err("%s: zero sized block device?\n", f->file_name);
317 f->real_file_size = bytes;
318 td->io_ops->close_file(td, f);
321 td->io_ops->close_file(td, f);
325 static int char_size(struct thread_data *td, struct fio_file *f)
327 #ifdef FIO_HAVE_CHARDEV_SIZE
328 unsigned long long bytes = 0;
331 if (td->io_ops->open_file(td, f)) {
332 log_err("fio: failed opening chardev %s for size check\n",
337 r = chardev_size(f, &bytes);
339 td_verror(td, r, "chardev_size");
344 log_err("%s: zero sized char device?\n", f->file_name);
348 f->real_file_size = bytes;
349 td->io_ops->close_file(td, f);
352 td->io_ops->close_file(td, f);
355 f->real_file_size = -1ULL;
360 static int get_file_size(struct thread_data *td, struct fio_file *f)
364 if (fio_file_size_known(f))
367 if (f->filetype == FIO_TYPE_FILE)
368 ret = file_size(td, f);
369 else if (f->filetype == FIO_TYPE_BD)
370 ret = bdev_size(td, f);
371 else if (f->filetype == FIO_TYPE_CHAR)
372 ret = char_size(td, f);
374 f->real_file_size = -1;
379 if (f->file_offset > f->real_file_size) {
380 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
381 (unsigned long long) f->file_offset,
382 (unsigned long long) f->real_file_size);
386 fio_file_set_size_known(f);
390 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
391 unsigned long long off,
392 unsigned long long len)
394 int errval = 0, ret = 0;
403 off = f->file_offset;
405 if (len == -1ULL || off == -1ULL)
408 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
411 if (td->io_ops->invalidate) {
412 ret = td->io_ops->invalidate(td, f);
415 } else if (f->filetype == FIO_TYPE_FILE) {
416 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
419 } else if (f->filetype == FIO_TYPE_BD) {
422 ret = blockdev_invalidate_cache(f);
423 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
425 * Linux multipath devices reject ioctl while
426 * the maps are being updated. That window can
427 * last tens of milliseconds; we'll try up to
428 * a quarter of a second.
431 ret = blockdev_invalidate_cache(f);
433 if (ret < 0 && errno == EACCES && geteuid()) {
435 log_err("fio: only root may flush block "
436 "devices. Cache flush bypassed!\n");
443 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
447 * Cache flushing isn't a fatal condition, and we know it will
448 * happen on some platforms where we don't have the proper
449 * function to flush eg block device caches. So just warn and
450 * continue on our way.
453 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
459 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
461 if (!fio_file_open(f))
464 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
467 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
471 dprint(FD_FILE, "fd close %s\n", f->file_name);
475 if (close(f->fd) < 0)
480 if (f->shadow_fd != -1) {
489 int file_lookup_open(struct fio_file *f, int flags)
491 struct fio_file *__f;
494 __f = lookup_file_hash(f->file_name);
496 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
498 * racy, need the __f->lock locked
503 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
511 f->fd = open(f->file_name, flags, 0600);
515 static int file_close_shadow_fds(struct thread_data *td)
521 for_each_file(td, f, i) {
522 if (f->shadow_fd == -1)
533 int generic_open_file(struct thread_data *td, struct fio_file *f)
539 dprint(FD_FILE, "fd open %s\n", f->file_name);
541 if (!strcmp(f->file_name, "-")) {
543 log_err("fio: can't read/write to stdin/out\n");
549 * move output logging to stderr, if we are writing to stdout
558 flags |= OS_O_DIRECT;
561 td_verror(td, EINVAL, "OS does not support atomic IO");
564 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
568 if (td->o.create_on_open && td->o.allow_create)
571 if (f->filetype != FIO_TYPE_FILE)
572 flags |= FIO_O_NOATIME;
579 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
583 f->fd = dup(STDOUT_FILENO);
585 from_hash = file_lookup_open(f, flags);
586 } else if (td_read(td)) {
587 if (f->filetype == FIO_TYPE_CHAR && !read_only)
593 f->fd = dup(STDIN_FILENO);
595 from_hash = file_lookup_open(f, flags);
598 from_hash = file_lookup_open(f, flags);
602 char buf[FIO_VERROR_SIZE];
605 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
606 flags &= ~FIO_O_NOATIME;
609 if (__e == EMFILE && file_close_shadow_fds(td))
612 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
614 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
615 log_err("fio: looks like your file system does not " \
616 "support direct=1/buffered=0\n");
619 td_verror(td, __e, buf);
623 if (!from_hash && f->fd != -1) {
624 if (add_file_hash(f)) {
628 * Stash away descriptor for later close. This is to
629 * work-around a "feature" on Linux, where a close of
630 * an fd that has been opened for write will trigger
631 * udev to call blkid to check partitions, fs id, etc.
632 * That pollutes the device cache, which can slow down
633 * unbuffered accesses.
635 if (f->shadow_fd == -1)
636 f->shadow_fd = f->fd;
639 * OK to ignore, we haven't done anything
642 ret = generic_close_file(td, f);
651 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
653 return get_file_size(td, f);
657 * open/close all files, so that ->real_file_size gets set
659 static int get_file_sizes(struct thread_data *td)
665 for_each_file(td, f, i) {
666 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
669 if (td_io_get_file_size(td, f)) {
670 if (td->error != ENOENT) {
671 log_err("%s\n", td->verror);
678 if (f->real_file_size == -1ULL && td->o.size)
679 f->real_file_size = td->o.size / td->o.nr_files;
686 struct flist_head list;
693 * Get free number of bytes for each file on each unique mount.
695 static unsigned long long get_fs_free_counts(struct thread_data *td)
697 struct flist_head *n, *tmp;
698 unsigned long long ret = 0;
699 struct fio_mount *fm;
704 for_each_file(td, f, i) {
708 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
709 if (f->real_file_size != -1ULL)
710 ret += f->real_file_size;
712 } else if (f->filetype != FIO_TYPE_FILE)
716 strncpy(buf, f->file_name, 255);
718 if (stat(buf, &sb) < 0) {
722 if (stat(buf, &sb) < 0)
727 flist_for_each(n, &list) {
728 fm = flist_entry(n, struct fio_mount, list);
729 if (fm->key == sb.st_dev)
738 fm = calloc(1, sizeof(*fm));
739 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
740 fm->base = basename(fm->__base);
742 flist_add(&fm->list, &list);
745 flist_for_each_safe(n, tmp, &list) {
746 unsigned long long sz;
748 fm = flist_entry(n, struct fio_mount, list);
749 flist_del(&fm->list);
751 sz = get_fs_free_size(fm->base);
752 if (sz && sz != -1ULL)
761 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
763 struct thread_options *o = &td->o;
765 if (o->file_append && f->filetype == FIO_TYPE_FILE)
766 return f->real_file_size;
768 return td->o.start_offset +
769 td->subjob_number * td->o.offset_increment;
773 * Open the files and setup files sizes, creating files if necessary.
775 int setup_files(struct thread_data *td)
777 unsigned long long total_size, extend_size;
778 struct thread_options *o = &td->o;
780 unsigned int i, nr_fs_extra = 0;
781 int err = 0, need_extend;
783 const unsigned int bs = td_min_bs(td);
786 dprint(FD_FILE, "setup files\n");
788 old_state = td_bump_runstate(td, TD_SETTING_UP);
790 if (o->read_iolog_file)
794 * if ioengine defines a setup() method, it's responsible for
795 * opening the files and setting f->real_file_size to indicate
796 * the valid range for that file.
798 if (td->io_ops->setup)
799 err = td->io_ops->setup(td);
801 err = get_file_sizes(td);
807 * check sizes. if the files/devices do not exist and the size
808 * isn't passed to fio, abort.
811 for_each_file(td, f, i) {
813 if (f->real_file_size == -1ULL)
816 total_size += f->real_file_size;
820 td->fill_device_size = get_fs_free_counts(td);
823 * device/file sizes are zero and no size given, punt
825 if ((!total_size || total_size == -1ULL) && !o->size &&
826 !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
827 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
828 log_err("%s: you need to specify size=\n", o->name);
829 td_verror(td, EINVAL, "total_file_size");
834 * Calculate per-file size and potential extra size for the
835 * first files, if needed.
837 if (!o->file_size_low && o->nr_files) {
840 fs = o->size / o->nr_files;
841 all_fs = fs * o->nr_files;
843 if (all_fs < o->size)
844 nr_fs_extra = (o->size - all_fs) / bs;
848 * now file sizes are known, so we can set ->io_size. if size= is
849 * not given, ->io_size is just equal to ->real_file_size. if size
850 * is given, ->io_size is size / nr_files.
852 extend_size = total_size = 0;
854 for_each_file(td, f, i) {
855 f->file_offset = get_start_offset(td, f);
857 if (!o->file_size_low) {
859 * no file size range given, file size is equal to
860 * total size divided by number of files. If that is
861 * zero, set it to the real file size. If the size
862 * doesn't divide nicely with the min blocksize,
863 * make the first files bigger.
872 f->io_size = f->real_file_size - f->file_offset;
873 } else if (f->real_file_size < o->file_size_low ||
874 f->real_file_size > o->file_size_high) {
875 if (f->file_offset > o->file_size_low)
878 * file size given. if it's fixed, use that. if it's a
879 * range, generate a random size in-between.
881 if (o->file_size_low == o->file_size_high)
882 f->io_size = o->file_size_low - f->file_offset;
884 f->io_size = get_rand_file_size(td)
888 f->io_size = f->real_file_size - f->file_offset;
890 if (f->io_size == -1ULL)
893 if (o->size_percent) {
894 f->io_size = (f->io_size * o->size_percent) / 100;
895 f->io_size -= (f->io_size % td_min_bs(td));
897 total_size += f->io_size;
900 if (f->filetype == FIO_TYPE_FILE &&
901 (f->io_size + f->file_offset) > f->real_file_size &&
902 !(td->io_ops->flags & FIO_DISKLESSIO)) {
903 if (!o->create_on_open)
904 extend_size += (f->io_size + f->file_offset);
906 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) /"
949 " %lluMB)\n", o->name, need_extend,
952 for_each_file(td, f, i) {
953 unsigned long long old_len = -1ULL, extend_len = -1ULL;
955 if (!fio_file_extend(f))
958 assert(f->filetype == FIO_TYPE_FILE);
959 fio_file_clear_extend(f);
960 if (!o->fill_device) {
961 old_len = f->real_file_size;
962 extend_len = f->io_size + f->file_offset -
965 f->real_file_size = (f->io_size + f->file_offset);
966 err = extend_file(td, f);
970 err = __file_invalidate_cache(td, f, old_len,
974 * Shut up static checker
990 o->zone_size = o->size;
993 * iolog already set the total io size, if we read back
996 if (!o->read_iolog_file) {
998 td->total_io_size = o->io_limit * o->loops;
1000 td->total_io_size = o->size * o->loops;
1007 td_restore_runstate(td, old_state);
1010 log_err("%s: you need to specify valid offset=\n", o->name);
1012 td_restore_runstate(td, old_state);
1016 int pre_read_files(struct thread_data *td)
1021 dprint(FD_FILE, "pre_read files\n");
1023 for_each_file(td, f, i) {
1024 pre_read_file(td, f);
1030 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1032 unsigned int range_size, seed;
1033 unsigned long nranges;
1036 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1037 fsize = min(f->real_file_size, f->io_size);
1039 nranges = (fsize + range_size - 1) / range_size;
1041 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1042 if (!td->o.rand_repeatable)
1043 seed = td->rand_seeds[4];
1045 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1046 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1047 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1048 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1049 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1050 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1055 static int init_rand_distribution(struct thread_data *td)
1061 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1064 state = td_bump_runstate(td, TD_SETTING_UP);
1066 for_each_file(td, f, i)
1067 __init_rand_distribution(td, f);
1069 td_restore_runstate(td, state);
1075 * Check if the number of blocks exceeds the randomness capability of
1076 * the selected generator. Tausworthe is 32-bit, the others are fullly
1079 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1082 if (blocks <= FRAND32_MAX)
1084 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1088 * If the user hasn't specified a random generator, switch
1089 * to tausworthe64 with informational warning. If the user did
1090 * specify one, just warn.
1092 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1095 if (!fio_option_is_set(&td->o, random_generator)) {
1096 log_info("fio: Switching to tausworthe64. Use the "
1097 "random_generator= option to get rid of this "
1099 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1104 * Just make this information to avoid breaking scripts.
1106 log_info("fio: Use the random_generator= option to switch to lfsr or "
1111 int init_random_map(struct thread_data *td)
1113 unsigned long long blocks;
1117 if (init_rand_distribution(td))
1122 for_each_file(td, f, i) {
1123 uint64_t fsize = min(f->real_file_size, f->io_size);
1125 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1127 if (check_rand_gen_limits(td, f, blocks))
1130 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1133 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1135 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1136 fio_file_set_lfsr(f);
1139 } else if (!td->o.norandommap) {
1140 f->io_axmap = axmap_new(blocks);
1142 fio_file_set_axmap(f);
1145 } else if (td->o.norandommap)
1148 if (!td->o.softrandommap) {
1149 log_err("fio: failed allocating random map. If running"
1150 " a large number of jobs, try the 'norandommap'"
1151 " option or set 'softrandommap'. Or give"
1152 " a larger --alloc-size to fio.\n");
1156 log_info("fio: file %s failed allocating random map. Running "
1157 "job without.\n", f->file_name);
1163 void close_files(struct thread_data *td)
1168 for_each_file(td, f, i) {
1169 if (fio_file_open(f))
1170 td_io_close_file(td, f);
1174 void close_and_free_files(struct thread_data *td)
1179 dprint(FD_FILE, "close files\n");
1181 for_each_file(td, f, i) {
1182 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1183 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1184 td_io_unlink_file(td, f);
1187 if (fio_file_open(f))
1188 td_io_close_file(td, f);
1190 remove_file_hash(f);
1192 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1193 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1194 td_io_unlink_file(td, f);
1197 sfree(f->file_name);
1198 f->file_name = NULL;
1199 if (fio_file_axmap(f)) {
1200 axmap_free(f->io_axmap);
1206 td->o.filename = NULL;
1208 free(td->file_locks);
1209 td->files_index = 0;
1211 td->file_locks = NULL;
1212 td->o.file_lock_mode = FILE_LOCK_NONE;
1216 static void get_file_type(struct fio_file *f)
1220 if (!strcmp(f->file_name, "-"))
1221 f->filetype = FIO_TYPE_PIPE;
1223 f->filetype = FIO_TYPE_FILE;
1226 /* \\.\ is the device namespace in Windows, where every file is
1228 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1229 f->filetype = FIO_TYPE_BD;
1232 if (!stat(f->file_name, &sb)) {
1233 if (S_ISBLK(sb.st_mode))
1234 f->filetype = FIO_TYPE_BD;
1235 else if (S_ISCHR(sb.st_mode))
1236 f->filetype = FIO_TYPE_CHAR;
1237 else if (S_ISFIFO(sb.st_mode))
1238 f->filetype = FIO_TYPE_PIPE;
1242 static int __is_already_allocated(const char *fname)
1244 struct flist_head *entry;
1247 if (flist_empty(&filename_list))
1250 flist_for_each(entry, &filename_list) {
1251 filename = flist_entry(entry, struct file_name, list)->filename;
1253 if (strcmp(filename, fname) == 0)
1260 static int is_already_allocated(const char *fname)
1264 fio_file_hash_lock();
1265 ret = __is_already_allocated(fname);
1266 fio_file_hash_unlock();
1270 static void set_already_allocated(const char *fname)
1272 struct file_name *fn;
1274 fn = malloc(sizeof(struct file_name));
1275 fn->filename = strdup(fname);
1277 fio_file_hash_lock();
1278 if (!__is_already_allocated(fname)) {
1279 flist_add_tail(&fn->list, &filename_list);
1282 fio_file_hash_unlock();
1291 static void free_already_allocated(void)
1293 struct flist_head *entry, *tmp;
1294 struct file_name *fn;
1296 if (flist_empty(&filename_list))
1299 fio_file_hash_lock();
1300 flist_for_each_safe(entry, tmp, &filename_list) {
1301 fn = flist_entry(entry, struct file_name, list);
1303 flist_del(&fn->list);
1307 fio_file_hash_unlock();
1310 static struct fio_file *alloc_new_file(struct thread_data *td)
1314 f = smalloc(sizeof(*f));
1316 log_err("fio: smalloc OOM\n");
1323 fio_file_reset(td, f);
1327 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1329 int cur_files = td->files_index;
1330 char file_name[PATH_MAX];
1334 dprint(FD_FILE, "add file %s\n", fname);
1336 if (td->o.directory)
1337 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1338 td->o.unique_filename);
1340 sprintf(file_name + len, "%s", fname);
1342 /* clean cloned siblings using existing files */
1343 if (numjob && is_already_allocated(file_name))
1346 f = alloc_new_file(td);
1348 if (td->files_size <= td->files_index) {
1349 unsigned int new_size = td->o.nr_files + 1;
1351 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1353 td->files = realloc(td->files, new_size * sizeof(f));
1354 if (td->files == NULL) {
1355 log_err("fio: realloc OOM\n");
1358 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1359 td->file_locks = realloc(td->file_locks, new_size);
1360 if (!td->file_locks) {
1361 log_err("fio: realloc OOM\n");
1364 td->file_locks[cur_files] = FILE_LOCK_NONE;
1366 td->files_size = new_size;
1368 td->files[cur_files] = f;
1369 f->fileno = cur_files;
1372 * init function, io engine may not be loaded yet
1374 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1375 f->real_file_size = -1ULL;
1377 f->file_name = smalloc_strdup(file_name);
1378 if (!f->file_name) {
1379 log_err("fio: smalloc OOM\n");
1385 switch (td->o.file_lock_mode) {
1386 case FILE_LOCK_NONE:
1388 case FILE_LOCK_READWRITE:
1389 f->rwlock = fio_rwlock_init();
1391 case FILE_LOCK_EXCLUSIVE:
1392 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1395 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1400 if (f->filetype == FIO_TYPE_FILE)
1401 td->nr_normal_files++;
1403 set_already_allocated(file_name);
1408 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1414 int add_file_exclusive(struct thread_data *td, const char *fname)
1419 for_each_file(td, f, i) {
1420 if (!strcmp(f->file_name, fname))
1424 return add_file(td, fname, 0, 1);
1427 void get_file(struct fio_file *f)
1429 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1430 assert(fio_file_open(f));
1434 int put_file(struct thread_data *td, struct fio_file *f)
1436 int f_ret = 0, ret = 0;
1438 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1440 if (!fio_file_open(f)) {
1441 assert(f->fd == -1);
1445 assert(f->references);
1446 if (--f->references)
1449 if (should_fsync(td) && td->o.fsync_on_close) {
1450 f_ret = fsync(f->fd);
1455 if (td->io_ops->close_file)
1456 ret = td->io_ops->close_file(td, f);
1461 td->nr_open_files--;
1462 fio_file_clear_open(f);
1463 assert(f->fd == -1);
1467 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1469 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1472 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1473 if (ddir == DDIR_READ)
1474 fio_rwlock_read(f->rwlock);
1476 fio_rwlock_write(f->rwlock);
1477 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1478 fio_mutex_down(f->lock);
1480 td->file_locks[f->fileno] = td->o.file_lock_mode;
1483 void unlock_file(struct thread_data *td, struct fio_file *f)
1485 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1488 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1489 fio_rwlock_unlock(f->rwlock);
1490 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1491 fio_mutex_up(f->lock);
1493 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1496 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1498 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1500 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1504 static int recurse_dir(struct thread_data *td, const char *dirname)
1510 D = opendir(dirname);
1512 char buf[FIO_VERROR_SIZE];
1514 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1515 td_verror(td, errno, buf);
1519 while ((dir = readdir(D)) != NULL) {
1520 char full_path[PATH_MAX];
1523 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1526 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1528 if (lstat(full_path, &sb) == -1) {
1529 if (errno != ENOENT) {
1530 td_verror(td, errno, "stat");
1536 if (S_ISREG(sb.st_mode)) {
1537 add_file(td, full_path, 0, 1);
1540 if (!S_ISDIR(sb.st_mode))
1543 ret = recurse_dir(td, full_path);
1552 int add_dir_files(struct thread_data *td, const char *path)
1554 int ret = recurse_dir(td, path);
1557 log_info("fio: opendir added %d files\n", td->o.nr_files);
1562 void dup_files(struct thread_data *td, struct thread_data *org)
1567 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1572 td->files = malloc(org->files_index * sizeof(f));
1574 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1575 td->file_locks = malloc(org->files_index);
1577 for_each_file(org, f, i) {
1578 struct fio_file *__f;
1580 __f = alloc_new_file(td);
1583 __f->file_name = smalloc_strdup(f->file_name);
1584 if (!__f->file_name) {
1585 log_err("fio: smalloc OOM\n");
1589 __f->filetype = f->filetype;
1592 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1593 __f->lock = f->lock;
1594 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1595 __f->rwlock = f->rwlock;
1602 * Returns the index that matches the filename, or -1 if not there
1604 int get_fileno(struct thread_data *td, const char *fname)
1609 for_each_file(td, f, i)
1610 if (!strcmp(f->file_name, fname))
1617 * For log usage, where we add/open/close files automatically
1619 void free_release_files(struct thread_data *td)
1623 td->o.open_files = 0;
1624 td->files_index = 0;
1625 td->nr_normal_files = 0;
1628 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1632 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1633 f->last_pos[i] = f->file_offset;
1634 f->last_start[i] = -1ULL;
1637 if (fio_file_axmap(f))
1638 axmap_reset(f->io_axmap);
1639 else if (fio_file_lfsr(f))
1640 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1643 int fio_files_done(struct thread_data *td)
1648 for_each_file(td, f, i)
1649 if (!fio_file_done(f))
1655 /* free memory used in initialization phase only */
1656 void filesetup_mem_free(void)
1658 free_already_allocated();