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 ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
63 td_verror(td, errno, "unlink");
68 flags = O_WRONLY | O_CREAT;
76 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
77 f->fd = open(f->file_name, flags, 0644);
79 td_verror(td, errno, "open");
83 #ifdef CONFIG_POSIX_FALLOCATE
84 if (!td->o.fill_device) {
85 switch (td->o.fallocate_mode) {
86 case FIO_FALLOCATE_NONE:
88 case FIO_FALLOCATE_POSIX:
89 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
91 (unsigned long long) f->real_file_size);
93 r = posix_fallocate(f->fd, 0, f->real_file_size);
95 log_err("fio: posix_fallocate fails: %s\n",
99 #ifdef CONFIG_LINUX_FALLOCATE
100 case FIO_FALLOCATE_KEEP_SIZE:
102 "fallocate(FALLOC_FL_KEEP_SIZE) "
103 "file %s size %llu\n", f->file_name,
104 (unsigned long long) f->real_file_size);
106 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
109 td_verror(td, errno, "fallocate");
112 #endif /* CONFIG_LINUX_FALLOCATE */
114 log_err("fio: unknown fallocate mode: %d\n",
115 td->o.fallocate_mode);
119 #endif /* CONFIG_POSIX_FALLOCATE */
125 * The size will be -1ULL when fill_device is used, so don't truncate
126 * or fallocate this file, just write it
128 if (!td->o.fill_device) {
129 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
130 (unsigned long long) f->real_file_size);
131 if (ftruncate(f->fd, f->real_file_size) == -1) {
132 if (errno != EFBIG) {
133 td_verror(td, errno, "ftruncate");
139 b = malloc(td->o.max_bs[DDIR_WRITE]);
141 left = f->real_file_size;
142 while (left && !td->terminate) {
143 bs = td->o.max_bs[DDIR_WRITE];
147 fill_io_buffer(td, b, bs, bs);
149 r = write(f->fd, b, bs);
159 if (td->o.fill_device)
161 log_info("fio: ENOSPC on laying out "
165 td_verror(td, errno, "write");
167 td_verror(td, EIO, "write");
174 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
175 unlink(f->file_name);
176 } else if (td->o.create_fsync) {
177 if (fsync(f->fd) < 0) {
178 td_verror(td, errno, "fsync");
182 if (td->o.fill_device && !td_write(td)) {
183 fio_file_clear_size_known(f);
184 if (td_io_get_file_size(td, f))
186 if (f->io_size > f->real_file_size)
187 f->io_size = f->real_file_size;
201 static int pre_read_file(struct thread_data *td, struct fio_file *f)
203 int ret = 0, r, did_open = 0, old_runstate;
204 unsigned long long left;
208 if (td->io_ops->flags & FIO_PIPEIO)
211 if (!fio_file_open(f)) {
212 if (td->io_ops->open_file(td, f)) {
213 log_err("fio: cannot pre-read, failed to open file\n");
219 old_runstate = td_bump_runstate(td, TD_PRE_READING);
221 bs = td->o.max_bs[DDIR_READ];
225 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
226 td_verror(td, errno, "lseek");
227 log_err("fio: failed to lseek pre-read file\n");
234 while (left && !td->terminate) {
238 r = read(f->fd, b, bs);
244 td_verror(td, EIO, "pre_read");
250 td_restore_runstate(td, old_runstate);
253 td->io_ops->close_file(td, f);
259 static unsigned long long get_rand_file_size(struct thread_data *td)
261 unsigned long long ret, sized;
264 if (td->o.use_os_rand) {
265 r = os_random_long(&td->file_size_state);
266 sized = td->o.file_size_high - td->o.file_size_low;
267 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
269 r = __rand(&td->__file_size_state);
270 sized = td->o.file_size_high - td->o.file_size_low;
271 ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
274 ret += td->o.file_size_low;
275 ret -= (ret % td->o.rw_min_bs);
279 static int file_size(struct thread_data *td, struct fio_file *f)
283 if (stat(f->file_name, &st) == -1) {
284 td_verror(td, errno, "fstat");
288 f->real_file_size = st.st_size;
292 static int bdev_size(struct thread_data *td, struct fio_file *f)
294 unsigned long long bytes = 0;
297 if (td->io_ops->open_file(td, f)) {
298 log_err("fio: failed opening blockdev %s for size check\n",
303 r = blockdev_size(f, &bytes);
305 td_verror(td, r, "blockdev_size");
310 log_err("%s: zero sized block device?\n", f->file_name);
314 f->real_file_size = bytes;
315 td->io_ops->close_file(td, f);
318 td->io_ops->close_file(td, f);
322 static int char_size(struct thread_data *td, struct fio_file *f)
324 #ifdef FIO_HAVE_CHARDEV_SIZE
325 unsigned long long bytes = 0;
328 if (td->io_ops->open_file(td, f)) {
329 log_err("fio: failed opening blockdev %s for size check\n",
334 r = chardev_size(f, &bytes);
336 td_verror(td, r, "chardev_size");
341 log_err("%s: zero sized char device?\n", f->file_name);
345 f->real_file_size = bytes;
346 td->io_ops->close_file(td, f);
349 td->io_ops->close_file(td, f);
352 f->real_file_size = -1ULL;
357 static int get_file_size(struct thread_data *td, struct fio_file *f)
361 if (fio_file_size_known(f))
364 if (f->filetype == FIO_TYPE_FILE)
365 ret = file_size(td, f);
366 else if (f->filetype == FIO_TYPE_BD)
367 ret = bdev_size(td, f);
368 else if (f->filetype == FIO_TYPE_CHAR)
369 ret = char_size(td, f);
371 f->real_file_size = -1;
376 if (f->file_offset > f->real_file_size) {
377 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
378 (unsigned long long) f->file_offset,
379 (unsigned long long) f->real_file_size);
383 fio_file_set_size_known(f);
387 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
388 unsigned long long off,
389 unsigned long long len)
396 off = f->file_offset;
398 if (len == -1ULL || off == -1ULL)
401 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
405 ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED);
407 if (f->filetype == FIO_TYPE_BD)
408 (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
410 } else if (f->filetype == FIO_TYPE_FILE) {
411 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
412 } else if (f->filetype == FIO_TYPE_BD) {
413 ret = blockdev_invalidate_cache(f);
414 if (ret < 0 && errno == EACCES && geteuid()) {
416 log_err("fio: only root may flush block "
417 "devices. Cache flush bypassed!\n");
422 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
426 * Cache flushing isn't a fatal condition, and we know it will
427 * happen on some platforms where we don't have the proper
428 * function to flush eg block device caches. So just warn and
429 * continue on our way.
432 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
440 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
442 if (!fio_file_open(f))
445 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
448 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
452 dprint(FD_FILE, "fd close %s\n", f->file_name);
456 if (close(f->fd) < 0)
461 if (f->shadow_fd != -1) {
470 int file_lookup_open(struct fio_file *f, int flags)
472 struct fio_file *__f;
475 __f = lookup_file_hash(f->file_name);
477 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
479 * racy, need the __f->lock locked
484 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
492 f->fd = open(f->file_name, flags, 0600);
496 static int file_close_shadow_fds(struct thread_data *td)
502 for_each_file(td, f, i) {
503 if (f->shadow_fd == -1)
514 int generic_open_file(struct thread_data *td, struct fio_file *f)
520 dprint(FD_FILE, "fd open %s\n", f->file_name);
522 if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
523 log_err("fio: trim only applies to block device\n");
527 if (!strcmp(f->file_name, "-")) {
529 log_err("fio: can't read/write to stdin/out\n");
535 * move output logging to stderr, if we are writing to stdout
544 flags |= OS_O_DIRECT;
547 td_verror(td, EINVAL, "OS does not support atomic IO");
550 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
554 if (td->o.create_on_open)
557 if (f->filetype != FIO_TYPE_FILE)
558 flags |= FIO_O_NOATIME;
565 if (f->filetype == FIO_TYPE_FILE)
569 f->fd = dup(STDOUT_FILENO);
571 from_hash = file_lookup_open(f, flags);
572 } else if (td_read(td)) {
573 if (f->filetype == FIO_TYPE_CHAR && !read_only)
579 f->fd = dup(STDIN_FILENO);
581 from_hash = file_lookup_open(f, flags);
584 from_hash = file_lookup_open(f, flags);
588 char buf[FIO_VERROR_SIZE];
591 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
592 flags &= ~FIO_O_NOATIME;
595 if (__e == EMFILE && file_close_shadow_fds(td))
598 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
600 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
601 log_err("fio: looks like your file system does not " \
602 "support direct=1/buffered=0\n");
605 td_verror(td, __e, buf);
608 if (!from_hash && f->fd != -1) {
609 if (add_file_hash(f)) {
613 * Stash away descriptor for later close. This is to
614 * work-around a "feature" on Linux, where a close of
615 * an fd that has been opened for write will trigger
616 * udev to call blkid to check partitions, fs id, etc.
617 * That pollutes the device cache, which can slow down
618 * unbuffered accesses.
620 if (f->shadow_fd == -1)
621 f->shadow_fd = f->fd;
624 * OK to ignore, we haven't done anything
627 ret = generic_close_file(td, f);
636 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
638 return get_file_size(td, f);
642 * open/close all files, so that ->real_file_size gets set
644 static int get_file_sizes(struct thread_data *td)
650 for_each_file(td, f, i) {
651 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
654 if (td_io_get_file_size(td, f)) {
655 if (td->error != ENOENT) {
656 log_err("%s\n", td->verror);
662 if (f->real_file_size == -1ULL && td->o.size)
663 f->real_file_size = td->o.size / td->o.nr_files;
670 struct flist_head list;
677 * Get free number of bytes for each file on each unique mount.
679 static unsigned long long get_fs_free_counts(struct thread_data *td)
681 struct flist_head *n, *tmp;
682 unsigned long long ret = 0;
683 struct fio_mount *fm;
688 for_each_file(td, f, i) {
692 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
693 if (f->real_file_size != -1ULL)
694 ret += f->real_file_size;
696 } else if (f->filetype != FIO_TYPE_FILE)
700 strncpy(buf, f->file_name, 255);
702 if (stat(buf, &sb) < 0) {
706 if (stat(buf, &sb) < 0)
711 flist_for_each(n, &list) {
712 fm = flist_entry(n, struct fio_mount, list);
713 if (fm->key == sb.st_dev)
722 fm = calloc(1, sizeof(*fm));
723 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
724 fm->base = basename(fm->__base);
726 flist_add(&fm->list, &list);
729 flist_for_each_safe(n, tmp, &list) {
730 unsigned long long sz;
732 fm = flist_entry(n, struct fio_mount, list);
733 flist_del(&fm->list);
735 sz = get_fs_size(fm->base);
736 if (sz && sz != -1ULL)
745 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
747 struct thread_options *o = &td->o;
749 if (o->file_append && f->filetype == FIO_TYPE_FILE)
750 return f->real_file_size;
752 return td->o.start_offset +
753 (td->thread_number - 1) * td->o.offset_increment;
757 * Open the files and setup files sizes, creating files if necessary.
759 int setup_files(struct thread_data *td)
761 unsigned long long total_size, extend_size;
762 struct thread_options *o = &td->o;
764 unsigned int i, nr_fs_extra = 0;
765 int err = 0, need_extend;
767 const unsigned int bs = td_min_bs(td);
770 dprint(FD_FILE, "setup files\n");
772 old_state = td_bump_runstate(td, TD_SETTING_UP);
774 if (o->read_iolog_file)
778 * if ioengine defines a setup() method, it's responsible for
779 * opening the files and setting f->real_file_size to indicate
780 * the valid range for that file.
782 if (td->io_ops->setup)
783 err = td->io_ops->setup(td);
785 err = get_file_sizes(td);
791 * check sizes. if the files/devices do not exist and the size
792 * isn't passed to fio, abort.
795 for_each_file(td, f, i) {
796 if (f->real_file_size == -1ULL)
799 total_size += f->real_file_size;
803 td->fill_device_size = get_fs_free_counts(td);
806 * device/file sizes are zero and no size given, punt
808 if ((!total_size || total_size == -1ULL) && !o->size &&
809 !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
810 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
811 log_err("%s: you need to specify size=\n", o->name);
812 td_verror(td, EINVAL, "total_file_size");
817 * Calculate per-file size and potential extra size for the
818 * first files, if needed.
820 if (!o->file_size_low && o->nr_files) {
823 fs = o->size / o->nr_files;
824 all_fs = fs * o->nr_files;
826 if (all_fs < o->size)
827 nr_fs_extra = (o->size - all_fs) / bs;
831 * now file sizes are known, so we can set ->io_size. if size= is
832 * not given, ->io_size is just equal to ->real_file_size. if size
833 * is given, ->io_size is size / nr_files.
835 extend_size = total_size = 0;
837 for_each_file(td, f, i) {
838 f->file_offset = get_start_offset(td, f);
840 if (!o->file_size_low) {
842 * no file size range given, file size is equal to
843 * total size divided by number of files. If that is
844 * zero, set it to the real file size. If the size
845 * doesn't divide nicely with the min blocksize,
846 * make the first files bigger.
855 f->io_size = f->real_file_size - f->file_offset;
856 } else if (f->real_file_size < o->file_size_low ||
857 f->real_file_size > o->file_size_high) {
858 if (f->file_offset > o->file_size_low)
861 * file size given. if it's fixed, use that. if it's a
862 * range, generate a random size in-between.
864 if (o->file_size_low == o->file_size_high)
865 f->io_size = o->file_size_low - f->file_offset;
867 f->io_size = get_rand_file_size(td)
871 f->io_size = f->real_file_size - f->file_offset;
873 if (f->io_size == -1ULL)
877 f->io_size = (f->io_size * o->size_percent) / 100;
878 total_size += f->io_size;
881 if (f->filetype == FIO_TYPE_FILE &&
882 (f->io_size + f->file_offset) > f->real_file_size &&
883 !(td->io_ops->flags & FIO_DISKLESSIO)) {
884 if (!o->create_on_open) {
886 extend_size += (f->io_size + f->file_offset);
888 f->real_file_size = f->io_size + f->file_offset;
889 fio_file_set_extend(f);
893 if (!o->size || o->size > total_size)
894 o->size = total_size;
896 if (o->size < td_min_bs(td)) {
897 log_err("fio: blocksize too large for data set\n");
902 * See if we need to extend some files
906 if (output_format == FIO_OUTPUT_NORMAL)
907 log_info("%s: Laying out IO file(s) (%u file(s) /"
908 " %lluMB)\n", o->name, need_extend,
911 for_each_file(td, f, i) {
912 unsigned long long old_len = -1ULL, extend_len = -1ULL;
914 if (!fio_file_extend(f))
917 assert(f->filetype == FIO_TYPE_FILE);
918 fio_file_clear_extend(f);
919 if (!o->fill_device) {
920 old_len = f->real_file_size;
921 extend_len = f->io_size + f->file_offset -
924 f->real_file_size = (f->io_size + f->file_offset);
925 err = extend_file(td, f);
929 err = __file_invalidate_cache(td, f, old_len,
933 * Shut up static checker
949 o->zone_size = o->size;
952 * iolog already set the total io size, if we read back
955 if (!o->read_iolog_file) {
957 td->total_io_size = o->io_limit * o->loops;
959 td->total_io_size = o->size * o->loops;
966 td_restore_runstate(td, old_state);
969 log_err("%s: you need to specify valid offset=\n", o->name);
971 td_restore_runstate(td, old_state);
975 int pre_read_files(struct thread_data *td)
980 dprint(FD_FILE, "pre_read files\n");
982 for_each_file(td, f, i) {
983 pre_read_file(td, f);
989 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
991 unsigned int range_size, seed;
992 unsigned long nranges;
995 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
996 file_size = min(f->real_file_size, f->io_size);
998 nranges = (file_size + range_size - 1) / range_size;
1000 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1001 if (!td->o.rand_repeatable)
1002 seed = td->rand_seeds[4];
1004 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1005 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1007 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1012 static int init_rand_distribution(struct thread_data *td)
1018 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1021 state = td_bump_runstate(td, TD_SETTING_UP);
1023 for_each_file(td, f, i)
1024 __init_rand_distribution(td, f);
1026 td_restore_runstate(td, state);
1031 int init_random_map(struct thread_data *td)
1033 unsigned long long blocks;
1037 if (init_rand_distribution(td))
1042 for_each_file(td, f, i) {
1043 uint64_t file_size = min(f->real_file_size, f->io_size);
1045 blocks = file_size / (unsigned long long) td->o.rw_min_bs;
1047 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1050 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1052 if (!lfsr_init(&f->lfsr, blocks, seed, 0))
1054 } else if (!td->o.norandommap) {
1055 f->io_axmap = axmap_new(blocks);
1058 } else if (td->o.norandommap)
1061 if (!td->o.softrandommap) {
1062 log_err("fio: failed allocating random map. If running"
1063 " a large number of jobs, try the 'norandommap'"
1064 " option or set 'softrandommap'. Or give"
1065 " a larger --alloc-size to fio.\n");
1069 log_info("fio: file %s failed allocating random map. Running "
1070 "job without.\n", f->file_name);
1076 void close_files(struct thread_data *td)
1081 for_each_file(td, f, i) {
1082 if (fio_file_open(f))
1083 td_io_close_file(td, f);
1087 void close_and_free_files(struct thread_data *td)
1092 dprint(FD_FILE, "close files\n");
1094 for_each_file(td, f, i) {
1095 if (fio_file_open(f))
1096 td_io_close_file(td, f);
1098 remove_file_hash(f);
1100 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1101 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1102 unlink(f->file_name);
1105 sfree(f->file_name);
1106 f->file_name = NULL;
1107 axmap_free(f->io_axmap);
1112 td->o.filename = NULL;
1114 free(td->file_locks);
1115 td->files_index = 0;
1117 td->file_locks = NULL;
1118 td->o.file_lock_mode = FILE_LOCK_NONE;
1122 static void get_file_type(struct fio_file *f)
1126 if (!strcmp(f->file_name, "-"))
1127 f->filetype = FIO_TYPE_PIPE;
1129 f->filetype = FIO_TYPE_FILE;
1131 /* \\.\ is the device namespace in Windows, where every file is
1133 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1134 f->filetype = FIO_TYPE_BD;
1136 if (!stat(f->file_name, &sb)) {
1137 if (S_ISBLK(sb.st_mode))
1138 f->filetype = FIO_TYPE_BD;
1139 else if (S_ISCHR(sb.st_mode))
1140 f->filetype = FIO_TYPE_CHAR;
1141 else if (S_ISFIFO(sb.st_mode))
1142 f->filetype = FIO_TYPE_PIPE;
1146 static int __is_already_allocated(const char *fname)
1148 struct flist_head *entry;
1151 if (flist_empty(&filename_list))
1154 flist_for_each(entry, &filename_list) {
1155 filename = flist_entry(entry, struct file_name, list)->filename;
1157 if (strcmp(filename, fname) == 0)
1164 static int is_already_allocated(const char *fname)
1168 fio_file_hash_lock();
1169 ret = __is_already_allocated(fname);
1170 fio_file_hash_unlock();
1174 static void set_already_allocated(const char *fname)
1176 struct file_name *fn;
1178 fn = malloc(sizeof(struct file_name));
1179 fn->filename = strdup(fname);
1181 fio_file_hash_lock();
1182 if (!__is_already_allocated(fname)) {
1183 flist_add_tail(&fn->list, &filename_list);
1186 fio_file_hash_unlock();
1195 static void free_already_allocated(void)
1197 struct flist_head *entry, *tmp;
1198 struct file_name *fn;
1200 if (flist_empty(&filename_list))
1203 fio_file_hash_lock();
1204 flist_for_each_safe(entry, tmp, &filename_list) {
1205 fn = flist_entry(entry, struct file_name, list);
1207 flist_del(&fn->list);
1211 fio_file_hash_unlock();
1214 static struct fio_file *alloc_new_file(struct thread_data *td)
1218 f = smalloc(sizeof(*f));
1220 log_err("fio: smalloc OOM\n");
1227 fio_file_reset(td, f);
1231 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1233 int cur_files = td->files_index;
1234 char file_name[PATH_MAX];
1238 dprint(FD_FILE, "add file %s\n", fname);
1240 if (td->o.directory)
1241 len = set_name_idx(file_name, td->o.directory, numjob);
1243 sprintf(file_name + len, "%s", fname);
1245 /* clean cloned siblings using existing files */
1246 if (numjob && is_already_allocated(file_name))
1249 f = alloc_new_file(td);
1251 if (td->files_size <= td->files_index) {
1252 unsigned int new_size = td->o.nr_files + 1;
1254 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1256 td->files = realloc(td->files, new_size * sizeof(f));
1257 if (td->files == NULL) {
1258 log_err("fio: realloc OOM\n");
1261 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1262 td->file_locks = realloc(td->file_locks, new_size);
1263 if (!td->file_locks) {
1264 log_err("fio: realloc OOM\n");
1267 td->file_locks[cur_files] = FILE_LOCK_NONE;
1269 td->files_size = new_size;
1271 td->files[cur_files] = f;
1272 f->fileno = cur_files;
1275 * init function, io engine may not be loaded yet
1277 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1278 f->real_file_size = -1ULL;
1280 f->file_name = smalloc_strdup(file_name);
1281 if (!f->file_name) {
1282 log_err("fio: smalloc OOM\n");
1288 switch (td->o.file_lock_mode) {
1289 case FILE_LOCK_NONE:
1291 case FILE_LOCK_READWRITE:
1292 f->rwlock = fio_rwlock_init();
1294 case FILE_LOCK_EXCLUSIVE:
1295 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1298 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1303 if (f->filetype == FIO_TYPE_FILE)
1304 td->nr_normal_files++;
1306 set_already_allocated(file_name);
1311 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1317 int add_file_exclusive(struct thread_data *td, const char *fname)
1322 for_each_file(td, f, i) {
1323 if (!strcmp(f->file_name, fname))
1327 return add_file(td, fname, 0, 1);
1330 void get_file(struct fio_file *f)
1332 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1333 assert(fio_file_open(f));
1337 int put_file(struct thread_data *td, struct fio_file *f)
1339 int f_ret = 0, ret = 0;
1341 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1343 if (!fio_file_open(f)) {
1344 assert(f->fd == -1);
1348 assert(f->references);
1349 if (--f->references)
1352 if (should_fsync(td) && td->o.fsync_on_close) {
1353 f_ret = fsync(f->fd);
1358 if (td->io_ops->close_file)
1359 ret = td->io_ops->close_file(td, f);
1364 td->nr_open_files--;
1365 fio_file_clear_open(f);
1366 assert(f->fd == -1);
1370 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1372 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1375 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1376 if (ddir == DDIR_READ)
1377 fio_rwlock_read(f->rwlock);
1379 fio_rwlock_write(f->rwlock);
1380 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1381 fio_mutex_down(f->lock);
1383 td->file_locks[f->fileno] = td->o.file_lock_mode;
1386 void unlock_file(struct thread_data *td, struct fio_file *f)
1388 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1391 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1392 fio_rwlock_unlock(f->rwlock);
1393 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1394 fio_mutex_up(f->lock);
1396 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1399 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1401 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1403 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1407 static int recurse_dir(struct thread_data *td, const char *dirname)
1413 D = opendir(dirname);
1415 char buf[FIO_VERROR_SIZE];
1417 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1418 td_verror(td, errno, buf);
1422 while ((dir = readdir(D)) != NULL) {
1423 char full_path[PATH_MAX];
1426 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1429 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1431 if (lstat(full_path, &sb) == -1) {
1432 if (errno != ENOENT) {
1433 td_verror(td, errno, "stat");
1439 if (S_ISREG(sb.st_mode)) {
1440 add_file(td, full_path, 0, 1);
1443 if (!S_ISDIR(sb.st_mode))
1446 ret = recurse_dir(td, full_path);
1455 int add_dir_files(struct thread_data *td, const char *path)
1457 int ret = recurse_dir(td, path);
1460 log_info("fio: opendir added %d files\n", td->o.nr_files);
1465 void dup_files(struct thread_data *td, struct thread_data *org)
1470 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1475 td->files = malloc(org->files_index * sizeof(f));
1477 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1478 td->file_locks = malloc(org->files_index);
1480 for_each_file(org, f, i) {
1481 struct fio_file *__f;
1483 __f = alloc_new_file(td);
1486 __f->file_name = smalloc_strdup(f->file_name);
1487 if (!__f->file_name) {
1488 log_err("fio: smalloc OOM\n");
1492 __f->filetype = f->filetype;
1495 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1496 __f->lock = f->lock;
1497 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1498 __f->rwlock = f->rwlock;
1505 * Returns the index that matches the filename, or -1 if not there
1507 int get_fileno(struct thread_data *td, const char *fname)
1512 for_each_file(td, f, i)
1513 if (!strcmp(f->file_name, fname))
1520 * For log usage, where we add/open/close files automatically
1522 void free_release_files(struct thread_data *td)
1525 td->files_index = 0;
1526 td->nr_normal_files = 0;
1529 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1531 f->last_pos = f->file_offset;
1532 f->last_start = -1ULL;
1534 axmap_reset(f->io_axmap);
1535 if (td->o.random_generator == FIO_RAND_GEN_LFSR)
1536 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1539 int fio_files_done(struct thread_data *td)
1544 for_each_file(td, f, i)
1545 if (!fio_file_done(f))
1551 /* free memory used in initialization phase only */
1552 void filesetup_mem_free(void)
1554 free_already_allocated();