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 static 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 blockdev %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)
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);
413 else if (f->filetype == FIO_TYPE_FILE)
414 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
415 else if (f->filetype == FIO_TYPE_BD) {
418 ret = blockdev_invalidate_cache(f);
419 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
421 * Linux multipath devices reject ioctl while
422 * the maps are being updated. That window can
423 * last tens of milliseconds; we'll try up to
424 * a quarter of a second.
427 ret = blockdev_invalidate_cache(f);
429 if (ret < 0 && errno == EACCES && geteuid()) {
431 log_err("fio: only root may flush block "
432 "devices. Cache flush bypassed!\n");
437 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
441 * Cache flushing isn't a fatal condition, and we know it will
442 * happen on some platforms where we don't have the proper
443 * function to flush eg block device caches. So just warn and
444 * continue on our way.
447 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
455 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
457 if (!fio_file_open(f))
460 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
463 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
467 dprint(FD_FILE, "fd close %s\n", f->file_name);
471 if (close(f->fd) < 0)
476 if (f->shadow_fd != -1) {
485 int file_lookup_open(struct fio_file *f, int flags)
487 struct fio_file *__f;
490 __f = lookup_file_hash(f->file_name);
492 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
494 * racy, need the __f->lock locked
499 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
507 f->fd = open(f->file_name, flags, 0600);
511 static int file_close_shadow_fds(struct thread_data *td)
517 for_each_file(td, f, i) {
518 if (f->shadow_fd == -1)
529 int generic_open_file(struct thread_data *td, struct fio_file *f)
535 dprint(FD_FILE, "fd open %s\n", f->file_name);
537 if (!strcmp(f->file_name, "-")) {
539 log_err("fio: can't read/write to stdin/out\n");
545 * move output logging to stderr, if we are writing to stdout
554 flags |= OS_O_DIRECT;
557 td_verror(td, EINVAL, "OS does not support atomic IO");
560 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
564 if (td->o.create_on_open && td->o.allow_create)
567 if (f->filetype != FIO_TYPE_FILE)
568 flags |= FIO_O_NOATIME;
575 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
579 f->fd = dup(STDOUT_FILENO);
581 from_hash = file_lookup_open(f, flags);
582 } else if (td_read(td)) {
583 if (f->filetype == FIO_TYPE_CHAR && !read_only)
589 f->fd = dup(STDIN_FILENO);
591 from_hash = file_lookup_open(f, flags);
594 from_hash = file_lookup_open(f, flags);
598 char buf[FIO_VERROR_SIZE];
601 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
602 flags &= ~FIO_O_NOATIME;
605 if (__e == EMFILE && file_close_shadow_fds(td))
608 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
610 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
611 log_err("fio: looks like your file system does not " \
612 "support direct=1/buffered=0\n");
615 td_verror(td, __e, buf);
619 if (!from_hash && f->fd != -1) {
620 if (add_file_hash(f)) {
624 * Stash away descriptor for later close. This is to
625 * work-around a "feature" on Linux, where a close of
626 * an fd that has been opened for write will trigger
627 * udev to call blkid to check partitions, fs id, etc.
628 * That pollutes the device cache, which can slow down
629 * unbuffered accesses.
631 if (f->shadow_fd == -1)
632 f->shadow_fd = f->fd;
635 * OK to ignore, we haven't done anything
638 ret = generic_close_file(td, f);
647 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
649 return get_file_size(td, f);
653 * open/close all files, so that ->real_file_size gets set
655 static int get_file_sizes(struct thread_data *td)
661 for_each_file(td, f, i) {
662 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
665 if (td_io_get_file_size(td, f)) {
666 if (td->error != ENOENT) {
667 log_err("%s\n", td->verror);
674 if (f->real_file_size == -1ULL && td->o.size)
675 f->real_file_size = td->o.size / td->o.nr_files;
682 struct flist_head list;
689 * Get free number of bytes for each file on each unique mount.
691 static unsigned long long get_fs_free_counts(struct thread_data *td)
693 struct flist_head *n, *tmp;
694 unsigned long long ret = 0;
695 struct fio_mount *fm;
700 for_each_file(td, f, i) {
704 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
705 if (f->real_file_size != -1ULL)
706 ret += f->real_file_size;
708 } else if (f->filetype != FIO_TYPE_FILE)
712 strncpy(buf, f->file_name, 255);
714 if (stat(buf, &sb) < 0) {
718 if (stat(buf, &sb) < 0)
723 flist_for_each(n, &list) {
724 fm = flist_entry(n, struct fio_mount, list);
725 if (fm->key == sb.st_dev)
734 fm = calloc(1, sizeof(*fm));
735 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
736 fm->base = basename(fm->__base);
738 flist_add(&fm->list, &list);
741 flist_for_each_safe(n, tmp, &list) {
742 unsigned long long sz;
744 fm = flist_entry(n, struct fio_mount, list);
745 flist_del(&fm->list);
747 sz = get_fs_free_size(fm->base);
748 if (sz && sz != -1ULL)
757 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
759 struct thread_options *o = &td->o;
761 if (o->file_append && f->filetype == FIO_TYPE_FILE)
762 return f->real_file_size;
764 return td->o.start_offset +
765 td->subjob_number * td->o.offset_increment;
769 * Open the files and setup files sizes, creating files if necessary.
771 int setup_files(struct thread_data *td)
773 unsigned long long total_size, extend_size;
774 struct thread_options *o = &td->o;
776 unsigned int i, nr_fs_extra = 0;
777 int err = 0, need_extend;
779 const unsigned int bs = td_min_bs(td);
782 dprint(FD_FILE, "setup files\n");
784 old_state = td_bump_runstate(td, TD_SETTING_UP);
786 if (o->read_iolog_file)
790 * if ioengine defines a setup() method, it's responsible for
791 * opening the files and setting f->real_file_size to indicate
792 * the valid range for that file.
794 if (td->io_ops->setup)
795 err = td->io_ops->setup(td);
797 err = get_file_sizes(td);
803 * check sizes. if the files/devices do not exist and the size
804 * isn't passed to fio, abort.
807 for_each_file(td, f, i) {
808 if (f->real_file_size == -1ULL)
811 total_size += f->real_file_size;
815 td->fill_device_size = get_fs_free_counts(td);
818 * device/file sizes are zero and no size given, punt
820 if ((!total_size || total_size == -1ULL) && !o->size &&
821 !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
822 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
823 log_err("%s: you need to specify size=\n", o->name);
824 td_verror(td, EINVAL, "total_file_size");
829 * Calculate per-file size and potential extra size for the
830 * first files, if needed.
832 if (!o->file_size_low && o->nr_files) {
835 fs = o->size / o->nr_files;
836 all_fs = fs * o->nr_files;
838 if (all_fs < o->size)
839 nr_fs_extra = (o->size - all_fs) / bs;
843 * now file sizes are known, so we can set ->io_size. if size= is
844 * not given, ->io_size is just equal to ->real_file_size. if size
845 * is given, ->io_size is size / nr_files.
847 extend_size = total_size = 0;
849 for_each_file(td, f, i) {
850 f->file_offset = get_start_offset(td, f);
852 if (!o->file_size_low) {
854 * no file size range given, file size is equal to
855 * total size divided by number of files. If that is
856 * zero, set it to the real file size. If the size
857 * doesn't divide nicely with the min blocksize,
858 * make the first files bigger.
867 f->io_size = f->real_file_size - f->file_offset;
868 } else if (f->real_file_size < o->file_size_low ||
869 f->real_file_size > o->file_size_high) {
870 if (f->file_offset > o->file_size_low)
873 * file size given. if it's fixed, use that. if it's a
874 * range, generate a random size in-between.
876 if (o->file_size_low == o->file_size_high)
877 f->io_size = o->file_size_low - f->file_offset;
879 f->io_size = get_rand_file_size(td)
883 f->io_size = f->real_file_size - f->file_offset;
885 if (f->io_size == -1ULL)
889 f->io_size = (f->io_size * o->size_percent) / 100;
890 total_size += f->io_size;
893 if (f->filetype == FIO_TYPE_FILE &&
894 (f->io_size + f->file_offset) > f->real_file_size &&
895 !(td->io_ops->flags & FIO_DISKLESSIO)) {
896 if (!o->create_on_open) {
898 extend_size += (f->io_size + f->file_offset);
900 f->real_file_size = f->io_size + f->file_offset;
901 fio_file_set_extend(f);
905 if (td->o.block_error_hist) {
908 assert(td->o.nr_files == 1); /* checked in fixup_options */
910 len = f->io_size / td->o.bs[DDIR_TRIM];
911 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
912 log_err("fio: cannot calculate block histogram with "
913 "%d trim blocks, maximum %d\n",
914 len, MAX_NR_BLOCK_INFOS);
915 td_verror(td, EINVAL, "block_error_hist");
919 td->ts.nr_block_infos = len;
920 for (i = 0; i < len; i++)
921 td->ts.block_infos[i] =
922 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
924 td->ts.nr_block_infos = 0;
926 if (!o->size || (total_size && o->size > total_size))
927 o->size = total_size;
929 if (o->size < td_min_bs(td)) {
930 log_err("fio: blocksize too large for data set\n");
935 * See if we need to extend some files
939 if (output_format & FIO_OUTPUT_NORMAL)
940 log_info("%s: Laying out IO file(s) (%u file(s) /"
941 " %lluMB)\n", o->name, need_extend,
944 for_each_file(td, f, i) {
945 unsigned long long old_len = -1ULL, extend_len = -1ULL;
947 if (!fio_file_extend(f))
950 assert(f->filetype == FIO_TYPE_FILE);
951 fio_file_clear_extend(f);
952 if (!o->fill_device) {
953 old_len = f->real_file_size;
954 extend_len = f->io_size + f->file_offset -
957 f->real_file_size = (f->io_size + f->file_offset);
958 err = extend_file(td, f);
962 err = __file_invalidate_cache(td, f, old_len,
966 * Shut up static checker
982 o->zone_size = o->size;
985 * iolog already set the total io size, if we read back
988 if (!o->read_iolog_file) {
990 td->total_io_size = o->io_limit * o->loops;
992 td->total_io_size = o->size * o->loops;
999 td_restore_runstate(td, old_state);
1002 log_err("%s: you need to specify valid offset=\n", o->name);
1004 td_restore_runstate(td, old_state);
1008 int pre_read_files(struct thread_data *td)
1013 dprint(FD_FILE, "pre_read files\n");
1015 for_each_file(td, f, i) {
1016 pre_read_file(td, f);
1022 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1024 unsigned int range_size, seed;
1025 unsigned long nranges;
1028 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1029 fsize = min(f->real_file_size, f->io_size);
1031 nranges = (fsize + range_size - 1) / range_size;
1033 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1034 if (!td->o.rand_repeatable)
1035 seed = td->rand_seeds[4];
1037 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1038 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1039 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1040 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1041 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1042 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1047 static int init_rand_distribution(struct thread_data *td)
1053 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1056 state = td_bump_runstate(td, TD_SETTING_UP);
1058 for_each_file(td, f, i)
1059 __init_rand_distribution(td, f);
1061 td_restore_runstate(td, state);
1067 * Check if the number of blocks exceeds the randomness capability of
1068 * the selected generator. Tausworthe is 32-bit, the others are fullly
1071 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1074 if (blocks <= FRAND32_MAX)
1076 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1080 * If the user hasn't specified a random generator, switch
1081 * to tausworthe64 with informational warning. If the user did
1082 * specify one, just warn.
1084 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1087 if (!fio_option_is_set(&td->o, random_generator)) {
1088 log_info("fio: Switching to tausworthe64. Use the "
1089 "random_generator= option to get rid of this "
1091 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1096 * Just make this information to avoid breaking scripts.
1098 log_info("fio: Use the random_generator= option to switch to lfsr or "
1103 int init_random_map(struct thread_data *td)
1105 unsigned long long blocks;
1109 if (init_rand_distribution(td))
1114 for_each_file(td, f, i) {
1115 uint64_t fsize = min(f->real_file_size, f->io_size);
1117 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1119 if (check_rand_gen_limits(td, f, blocks))
1122 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1125 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1127 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1128 fio_file_set_lfsr(f);
1131 } else if (!td->o.norandommap) {
1132 f->io_axmap = axmap_new(blocks);
1134 fio_file_set_axmap(f);
1137 } else if (td->o.norandommap)
1140 if (!td->o.softrandommap) {
1141 log_err("fio: failed allocating random map. If running"
1142 " a large number of jobs, try the 'norandommap'"
1143 " option or set 'softrandommap'. Or give"
1144 " a larger --alloc-size to fio.\n");
1148 log_info("fio: file %s failed allocating random map. Running "
1149 "job without.\n", f->file_name);
1155 void close_files(struct thread_data *td)
1160 for_each_file(td, f, i) {
1161 if (fio_file_open(f))
1162 td_io_close_file(td, f);
1166 void close_and_free_files(struct thread_data *td)
1171 dprint(FD_FILE, "close files\n");
1173 for_each_file(td, f, i) {
1174 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1175 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1176 td_io_unlink_file(td, f);
1179 if (fio_file_open(f))
1180 td_io_close_file(td, f);
1182 remove_file_hash(f);
1184 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1185 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1186 td_io_unlink_file(td, f);
1189 sfree(f->file_name);
1190 f->file_name = NULL;
1191 if (fio_file_axmap(f)) {
1192 axmap_free(f->io_axmap);
1198 td->o.filename = NULL;
1200 free(td->file_locks);
1201 td->files_index = 0;
1203 td->file_locks = NULL;
1204 td->o.file_lock_mode = FILE_LOCK_NONE;
1208 static void get_file_type(struct fio_file *f)
1212 if (!strcmp(f->file_name, "-"))
1213 f->filetype = FIO_TYPE_PIPE;
1215 f->filetype = FIO_TYPE_FILE;
1217 /* \\.\ is the device namespace in Windows, where every file is
1219 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1220 f->filetype = FIO_TYPE_BD;
1222 if (!stat(f->file_name, &sb)) {
1223 if (S_ISBLK(sb.st_mode))
1224 f->filetype = FIO_TYPE_BD;
1225 else if (S_ISCHR(sb.st_mode))
1226 f->filetype = FIO_TYPE_CHAR;
1227 else if (S_ISFIFO(sb.st_mode))
1228 f->filetype = FIO_TYPE_PIPE;
1232 static int __is_already_allocated(const char *fname)
1234 struct flist_head *entry;
1237 if (flist_empty(&filename_list))
1240 flist_for_each(entry, &filename_list) {
1241 filename = flist_entry(entry, struct file_name, list)->filename;
1243 if (strcmp(filename, fname) == 0)
1250 static int is_already_allocated(const char *fname)
1254 fio_file_hash_lock();
1255 ret = __is_already_allocated(fname);
1256 fio_file_hash_unlock();
1260 static void set_already_allocated(const char *fname)
1262 struct file_name *fn;
1264 fn = malloc(sizeof(struct file_name));
1265 fn->filename = strdup(fname);
1267 fio_file_hash_lock();
1268 if (!__is_already_allocated(fname)) {
1269 flist_add_tail(&fn->list, &filename_list);
1272 fio_file_hash_unlock();
1281 static void free_already_allocated(void)
1283 struct flist_head *entry, *tmp;
1284 struct file_name *fn;
1286 if (flist_empty(&filename_list))
1289 fio_file_hash_lock();
1290 flist_for_each_safe(entry, tmp, &filename_list) {
1291 fn = flist_entry(entry, struct file_name, list);
1293 flist_del(&fn->list);
1297 fio_file_hash_unlock();
1300 static struct fio_file *alloc_new_file(struct thread_data *td)
1304 f = smalloc(sizeof(*f));
1306 log_err("fio: smalloc OOM\n");
1313 fio_file_reset(td, f);
1317 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1319 int cur_files = td->files_index;
1320 char file_name[PATH_MAX];
1324 dprint(FD_FILE, "add file %s\n", fname);
1326 if (td->o.directory)
1327 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob);
1329 sprintf(file_name + len, "%s", fname);
1331 /* clean cloned siblings using existing files */
1332 if (numjob && is_already_allocated(file_name))
1335 f = alloc_new_file(td);
1337 if (td->files_size <= td->files_index) {
1338 unsigned int new_size = td->o.nr_files + 1;
1340 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1342 td->files = realloc(td->files, new_size * sizeof(f));
1343 if (td->files == NULL) {
1344 log_err("fio: realloc OOM\n");
1347 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1348 td->file_locks = realloc(td->file_locks, new_size);
1349 if (!td->file_locks) {
1350 log_err("fio: realloc OOM\n");
1353 td->file_locks[cur_files] = FILE_LOCK_NONE;
1355 td->files_size = new_size;
1357 td->files[cur_files] = f;
1358 f->fileno = cur_files;
1361 * init function, io engine may not be loaded yet
1363 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1364 f->real_file_size = -1ULL;
1366 f->file_name = smalloc_strdup(file_name);
1367 if (!f->file_name) {
1368 log_err("fio: smalloc OOM\n");
1374 switch (td->o.file_lock_mode) {
1375 case FILE_LOCK_NONE:
1377 case FILE_LOCK_READWRITE:
1378 f->rwlock = fio_rwlock_init();
1380 case FILE_LOCK_EXCLUSIVE:
1381 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1384 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1389 if (f->filetype == FIO_TYPE_FILE)
1390 td->nr_normal_files++;
1392 set_already_allocated(file_name);
1397 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1403 int add_file_exclusive(struct thread_data *td, const char *fname)
1408 for_each_file(td, f, i) {
1409 if (!strcmp(f->file_name, fname))
1413 return add_file(td, fname, 0, 1);
1416 void get_file(struct fio_file *f)
1418 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1419 assert(fio_file_open(f));
1423 int put_file(struct thread_data *td, struct fio_file *f)
1425 int f_ret = 0, ret = 0;
1427 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1429 if (!fio_file_open(f)) {
1430 assert(f->fd == -1);
1434 assert(f->references);
1435 if (--f->references)
1438 if (should_fsync(td) && td->o.fsync_on_close) {
1439 f_ret = fsync(f->fd);
1444 if (td->io_ops->close_file)
1445 ret = td->io_ops->close_file(td, f);
1450 td->nr_open_files--;
1451 fio_file_clear_open(f);
1452 assert(f->fd == -1);
1456 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1458 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1461 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1462 if (ddir == DDIR_READ)
1463 fio_rwlock_read(f->rwlock);
1465 fio_rwlock_write(f->rwlock);
1466 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1467 fio_mutex_down(f->lock);
1469 td->file_locks[f->fileno] = td->o.file_lock_mode;
1472 void unlock_file(struct thread_data *td, struct fio_file *f)
1474 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1477 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1478 fio_rwlock_unlock(f->rwlock);
1479 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1480 fio_mutex_up(f->lock);
1482 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1485 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1487 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1489 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1493 static int recurse_dir(struct thread_data *td, const char *dirname)
1499 D = opendir(dirname);
1501 char buf[FIO_VERROR_SIZE];
1503 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1504 td_verror(td, errno, buf);
1508 while ((dir = readdir(D)) != NULL) {
1509 char full_path[PATH_MAX];
1512 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1515 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1517 if (lstat(full_path, &sb) == -1) {
1518 if (errno != ENOENT) {
1519 td_verror(td, errno, "stat");
1525 if (S_ISREG(sb.st_mode)) {
1526 add_file(td, full_path, 0, 1);
1529 if (!S_ISDIR(sb.st_mode))
1532 ret = recurse_dir(td, full_path);
1541 int add_dir_files(struct thread_data *td, const char *path)
1543 int ret = recurse_dir(td, path);
1546 log_info("fio: opendir added %d files\n", td->o.nr_files);
1551 void dup_files(struct thread_data *td, struct thread_data *org)
1556 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1561 td->files = malloc(org->files_index * sizeof(f));
1563 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1564 td->file_locks = malloc(org->files_index);
1566 for_each_file(org, f, i) {
1567 struct fio_file *__f;
1569 __f = alloc_new_file(td);
1572 __f->file_name = smalloc_strdup(f->file_name);
1573 if (!__f->file_name) {
1574 log_err("fio: smalloc OOM\n");
1578 __f->filetype = f->filetype;
1581 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1582 __f->lock = f->lock;
1583 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1584 __f->rwlock = f->rwlock;
1591 * Returns the index that matches the filename, or -1 if not there
1593 int get_fileno(struct thread_data *td, const char *fname)
1598 for_each_file(td, f, i)
1599 if (!strcmp(f->file_name, fname))
1606 * For log usage, where we add/open/close files automatically
1608 void free_release_files(struct thread_data *td)
1612 td->o.open_files = 0;
1613 td->files_index = 0;
1614 td->nr_normal_files = 0;
1617 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1621 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1622 f->last_pos[i] = f->file_offset;
1623 f->last_start[i] = -1ULL;
1626 if (fio_file_axmap(f))
1627 axmap_reset(f->io_axmap);
1628 else if (fio_file_lfsr(f))
1629 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1632 int fio_files_done(struct thread_data *td)
1637 for_each_file(td, f, i)
1638 if (!fio_file_done(f))
1644 /* free memory used in initialization phase only */
1645 void filesetup_mem_free(void)
1647 free_already_allocated();