#include <fcntl.h>
#include <string.h>
#include <assert.h>
+#include <dirent.h>
#include <sys/stat.h>
#include <sys/mman.h>
+#include <sys/types.h>
#include "fio.h"
-#include "os.h"
+#include "smalloc.h"
+#include "filehash.h"
+
+static int root_warn;
/*
- * Check if the file exists and it's large enough.
+ * Leaves f->fd open on success, caller must close
*/
-static int file_ok(struct thread_data *td, struct fio_file *f)
+static int extend_file(struct thread_data *td, struct fio_file *f)
{
- struct stat st;
+ int r, new_layout = 0, unlink_file = 0, flags;
+ unsigned long long left;
+ unsigned int bs;
+ char *b;
- if (td->filetype != FIO_TYPE_FILE ||
- (td->io_ops->flags & FIO_DISKLESSIO))
+ if (read_only) {
+ log_err("fio: refusing extend of file due to read-only\n");
return 0;
-
- if (lstat(f->file_name, &st) == -1)
- return 1;
+ }
/*
- * if it's a special file, size is always ok for now
+ * check if we need to lay the file out complete again. fio
+ * does that for operations involving reads, or for writes
+ * where overwrite is set
*/
- if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
- return 0;
- if (st.st_size < (off_t) f->file_size)
- return 1;
-
- return 0;
-}
+ if (td_read(td) || (td_write(td) && td->o.overwrite) ||
+ (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
+ new_layout = 1;
+ if (td_write(td) && !td->o.overwrite)
+ unlink_file = 1;
+
+ if (unlink_file || new_layout) {
+ dprint(FD_FILE, "layout unlink %s\n", f->file_name);
+ if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
+ td_verror(td, errno, "unlink");
+ return 1;
+ }
+ }
-static int create_file(struct thread_data *td, struct fio_file *f)
-{
- unsigned long long left;
- unsigned int bs;
- char *b;
- int r;
+ flags = O_WRONLY | O_CREAT;
+ if (new_layout)
+ flags |= O_TRUNC;
- f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+ dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
+ f->fd = open(f->file_name, flags, 0644);
if (f->fd < 0) {
td_verror(td, errno, "open");
return 1;
}
- if (ftruncate(f->fd, f->file_size) == -1) {
+ if (!new_layout)
+ goto done;
+
+ dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
+ f->real_file_size);
+ if (ftruncate(f->fd, f->real_file_size) == -1) {
td_verror(td, errno, "ftruncate");
goto err;
}
- if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
- td_verror(td, errno, "posix_fallocate");
- goto err;
- }
+#ifdef FIO_HAVE_FALLOCATE
+ dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
+ f->real_file_size);
+ r = posix_fallocate(f->fd, 0, f->real_file_size);
+ if (r < 0)
+ log_err("fio: posix_fallocate fails: %s\n", strerror(-r));
+#endif
- b = malloc(td->max_bs[DDIR_WRITE]);
- memset(b, 0, td->max_bs[DDIR_WRITE]);
+ b = malloc(td->o.max_bs[DDIR_WRITE]);
+ memset(b, 0, td->o.max_bs[DDIR_WRITE]);
- left = f->file_size;
+ left = f->real_file_size;
while (left && !td->terminate) {
- bs = td->max_bs[DDIR_WRITE];
+ bs = td->o.max_bs[DDIR_WRITE];
if (bs > left)
bs = left;
}
}
- if (td->terminate)
+ if (td->terminate) {
+ dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
unlink(f->file_name);
- else if (td->create_fsync)
- fsync(f->fd);
+ } else if (td->o.create_fsync) {
+ if (fsync(f->fd) < 0) {
+ td_verror(td, errno, "fsync");
+ goto err;
+ }
+ }
free(b);
- close(f->fd);
- f->fd = -1;
+done:
return 0;
err:
close(f->fd);
return 1;
}
-static int create_files(struct thread_data *td)
+static unsigned long long get_rand_file_size(struct thread_data *td)
{
- struct fio_file *f;
- int i, err, need_create, can_extend;
-
- for_each_file(td, f, i)
- f->file_size = td->total_file_size / td->nr_files;
-
- /*
- * unless specifically asked for overwrite, let normal io extend it
- */
- can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
- if (can_extend)
- return 0;
-
- need_create = 0;
- if (td->filetype == FIO_TYPE_FILE) {
- for_each_file(td, f, i) {
- int file_there = !file_ok(td, f);
-
- if (file_there && td_write(td) && !can_extend) {
- unlink(f->file_name);
- file_there = 0;
- }
-
- need_create += !file_there;
- }
- }
-
- if (!need_create)
- return 0;
-
- if (!td->total_file_size) {
- log_err("Need size for create\n");
- td_verror(td, EINVAL, "file_size");
- return 1;
- }
-
- temp_stall_ts = 1;
- fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n",
- td->name, td->nr_uniq_files,
- (td->total_file_size >> 20) / td->nr_uniq_files,
- td->total_file_size >> 20);
-
- err = 0;
- for_each_file(td, f, i) {
- /*
- * Only unlink files that we created.
- */
- f->unlink = 0;
- if (file_ok(td, f)) {
- f->unlink = td->unlink;
- err = create_file(td, f);
- if (err)
- break;
- }
- }
-
- temp_stall_ts = 0;
- return err;
+ unsigned long long ret, size_d;
+ long r;
+
+ r = os_random_long(&td->file_size_state);
+ size_d = td->o.file_size_high - td->o.file_size_low;
+ ret = (unsigned long long) ((double) size_d * (r / (RAND_MAX + 1.0)));
+ ret += td->o.file_size_low;
+ ret -= (ret % td->o.rw_min_bs);
+ return ret;
}
static int file_size(struct thread_data *td, struct fio_file *f)
{
struct stat st;
- if (td->overwrite) {
- if (fstat(f->fd, &st) == -1) {
- td_verror(td, errno, "fstat");
- return 1;
- }
-
- f->real_file_size = st.st_size;
-
- if (!f->file_size || f->file_size > f->real_file_size)
- f->file_size = f->real_file_size;
- } else
- f->real_file_size = f->file_size;
+ if (fstat(f->fd, &st) == -1) {
+ td_verror(td, errno, "fstat");
+ return 1;
+ }
+ f->real_file_size = st.st_size;
return 0;
}
}
f->real_file_size = bytes;
-
- /*
- * no extend possibilities, so limit size to device size if too large
- */
- if (!f->file_size || f->file_size > f->real_file_size)
- f->file_size = f->real_file_size;
-
- f->file_size -= f->file_offset;
return 0;
}
{
int ret = 0;
- if (td->filetype == FIO_TYPE_FILE)
+ if (f->flags & FIO_SIZE_KNOWN)
+ return 0;
+
+ if (f->filetype == FIO_TYPE_FILE)
ret = file_size(td, f);
- else if (td->filetype == FIO_TYPE_BD)
+ else if (f->filetype == FIO_TYPE_BD)
ret = bdev_size(td, f);
else
f->real_file_size = -1;
return ret;
if (f->file_offset > f->real_file_size) {
- log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
+ log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
+ f->file_offset, f->real_file_size);
return 1;
}
+ f->flags |= FIO_SIZE_KNOWN;
return 0;
}
-int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
+static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
+ unsigned long long off,
+ unsigned long long len)
{
int ret = 0;
- if (td->odirect)
- return 0;
+ if (len == -1ULL)
+ len = f->io_size;
+ if (off == -1ULL)
+ off = f->file_offset;
+
+ dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
+ len);
/*
* FIXME: add blockdev flushing too
*/
if (f->mmap)
- ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
- else if (td->filetype == FIO_TYPE_FILE) {
- ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
- } else if (td->filetype == FIO_TYPE_BD) {
+ ret = madvise(f->mmap, len, MADV_DONTNEED);
+ else if (f->filetype == FIO_TYPE_FILE) {
+ ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
+ } else if (f->filetype == FIO_TYPE_BD) {
ret = blockdev_invalidate_cache(f->fd);
- } else if (td->filetype == FIO_TYPE_CHAR)
+ if (ret < 0 && errno == EACCES && geteuid()) {
+ if (!root_warn) {
+ log_err("fio: only root may flush block "
+ "devices. Cache flush bypassed!\n");
+ root_warn = 1;
+ }
+ ret = 0;
+ }
+ } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
ret = 0;
if (ret < 0) {
td_verror(td, errno, "invalidate_cache");
return 1;
+ } else if (ret > 0) {
+ td_verror(td, ret, "invalidate_cache");
+ return 1;
}
return ret;
+
}
-void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
+int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
{
- close(f->fd);
+ if (!(f->flags & FIO_FILE_OPEN))
+ return 0;
+
+ return __file_invalidate_cache(td, f, -1, -1);
+}
+
+int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
+{
+ int ret = 0;
+
+ dprint(FD_FILE, "fd close %s\n", f->file_name);
+
+ remove_file_hash(f);
+
+ if (close(f->fd) < 0)
+ ret = errno;
+
f->fd = -1;
+ return ret;
+}
+
+static int file_lookup_open(struct fio_file *f, int flags)
+{
+ struct fio_file *__f;
+ int from_hash;
+
+ __f = lookup_file_hash(f->file_name);
+ if (__f) {
+ dprint(FD_FILE, "found file in hash %s\n", f->file_name);
+ /*
+ * racy, need the __f->lock locked
+ */
+ f->lock = __f->lock;
+ f->lock_owner = __f->lock_owner;
+ f->lock_batch = __f->lock_batch;
+ f->lock_ddir = __f->lock_ddir;
+ from_hash = 1;
+ } else {
+ dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
+ from_hash = 0;
+ }
+
+ f->fd = open(f->file_name, flags, 0600);
+ return from_hash;
}
int generic_open_file(struct thread_data *td, struct fio_file *f)
{
+ int is_std = 0;
int flags = 0;
+ int from_hash = 0;
- if (td->odirect)
+ dprint(FD_FILE, "fd open %s\n", f->file_name);
+
+ if (!strcmp(f->file_name, "-")) {
+ if (td_rw(td)) {
+ log_err("fio: can't read/write to stdin/out\n");
+ return 1;
+ }
+ is_std = 1;
+
+ /*
+ * move output logging to stderr, if we are writing to stdout
+ */
+ if (td_write(td))
+ f_out = stderr;
+ }
+
+ if (td->o.odirect)
flags |= OS_O_DIRECT;
- if (td->sync_io)
+ if (td->o.sync_io)
flags |= O_SYNC;
+ if (f->filetype != FIO_TYPE_FILE)
+ flags |= FIO_O_NOATIME;
- if (td_write(td) || td_rw(td)) {
- flags |= O_RDWR;
+open_again:
+ if (td_write(td)) {
+ if (!read_only)
+ flags |= O_RDWR;
- if (td->filetype == FIO_TYPE_FILE)
+ if (f->filetype == FIO_TYPE_FILE)
flags |= O_CREAT;
- f->fd = open(f->file_name, flags, 0600);
+ if (is_std)
+ f->fd = dup(STDOUT_FILENO);
+ else
+ from_hash = file_lookup_open(f, flags);
} else {
- if (td->filetype == FIO_TYPE_CHAR)
+ if (f->filetype == FIO_TYPE_CHAR && !read_only)
flags |= O_RDWR;
else
flags |= O_RDONLY;
- f->fd = open(f->file_name, flags);
+ if (is_std)
+ f->fd = dup(STDIN_FILENO);
+ else
+ from_hash = file_lookup_open(f, flags);
}
if (f->fd == -1) {
+ char buf[FIO_VERROR_SIZE];
int __e = errno;
- td_verror(td, __e, "open");
- if (__e == EINVAL && td->odirect)
- log_err("fio: destination does not support O_DIRECT\n");
- return 1;
+ if (errno == EPERM && (flags & FIO_O_NOATIME)) {
+ flags &= ~FIO_O_NOATIME;
+ goto open_again;
+ }
+
+ snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
+
+ td_verror(td, __e, buf);
}
if (get_file_size(td, f))
goto err;
- if (td->invalidate_cache && file_invalidate_cache(td, f))
- goto err;
+ if (!from_hash && f->fd != -1) {
+ if (add_file_hash(f)) {
+ int ret;
- if (!td_random(td)) {
- if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
- td_verror(td, errno, "fadvise");
- goto err;
- }
- } else {
- if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
- td_verror(td, errno, "fadvise");
- goto err;
+ /*
+ * OK to ignore, we haven't done anything with it
+ */
+ ret = generic_close_file(td, f);
+ goto open_again;
}
}
int open_files(struct thread_data *td)
{
struct fio_file *f;
- int i, err = 0;
+ unsigned int i;
+ int err = 0;
+
+ dprint(FD_FILE, "open files\n");
for_each_file(td, f, i) {
err = td_io_open_file(td, f);
- if (err)
+ if (err) {
+ if (td->error == EMFILE) {
+ log_err("fio: limited open files to: %d\n",
+ td->nr_open_files);
+ td->o.open_files = td->nr_open_files;
+ err = 0;
+ clear_error(td);
+ }
break;
+ }
- if (td->open_files == td->nr_open_files)
+ if (td->o.open_files == td->nr_open_files)
break;
}
return err;
}
+/*
+ * open/close all files, so that ->real_file_size gets set
+ */
+static int get_file_sizes(struct thread_data *td)
+{
+ struct fio_file *f;
+ unsigned int i;
+ int err = 0;
+
+ for_each_file(td, f, i) {
+ dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
+ f->file_name);
+
+ if (td->io_ops->open_file(td, f)) {
+ if (td->error != ENOENT) {
+ log_err("%s\n", td->verror);
+ err = 1;
+ }
+ clear_error(td);
+ } else {
+ if (td->io_ops->close_file)
+ td->io_ops->close_file(td, f);
+ }
+
+ if (f->real_file_size == -1ULL && td->o.size)
+ f->real_file_size = td->o.size / td->o.nr_files;
+ }
+
+ return err;
+}
+
+/*
+ * Open the files and setup files sizes, creating files if necessary.
+ */
int setup_files(struct thread_data *td)
{
+ unsigned long long total_size, extend_size;
struct fio_file *f;
- int err, i;
+ unsigned int i;
+ int err = 0, need_extend;
+
+ dprint(FD_FILE, "setup files\n");
+
+ if (td->o.read_iolog_file)
+ return 0;
/*
* if ioengine defines a setup() method, it's responsible for
- * setting up everything in the td->files[] area.
+ * opening the files and setting f->real_file_size to indicate
+ * the valid range for that file.
*/
if (td->io_ops->setup)
- return td->io_ops->setup(td);
+ err = td->io_ops->setup(td);
+ else
+ err = get_file_sizes(td);
+
+ if (err)
+ return err;
+
+ /*
+ * check sizes. if the files/devices do not exist and the size
+ * isn't passed to fio, abort.
+ */
+ total_size = 0;
+ for_each_file(td, f, i) {
+ if (f->real_file_size == -1ULL)
+ total_size = -1ULL;
+ else
+ total_size += f->real_file_size;
+ }
- if (create_files(td))
+ /*
+ * device/file sizes are zero and no size given, punt
+ */
+ if ((!total_size || total_size == -1ULL) && !td->o.size &&
+ !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
+ log_err("%s: you need to specify size=\n", td->o.name);
+ td_verror(td, EINVAL, "total_file_size");
return 1;
+ }
+
+ /*
+ * now file sizes are known, so we can set ->io_size. if size= is
+ * not given, ->io_size is just equal to ->real_file_size. if size
+ * is given, ->io_size is size / nr_files.
+ */
+ extend_size = total_size = 0;
+ need_extend = 0;
+ for_each_file(td, f, i) {
+ f->file_offset = td->o.start_offset;
+
+ if (!td->o.file_size_low) {
+ /*
+ * no file size range given, file size is equal to
+ * total size divided by number of files. if that is
+ * zero, set it to the real file size.
+ */
+ f->io_size = td->o.size / td->o.nr_files;
+ if (!f->io_size)
+ f->io_size = f->real_file_size - f->file_offset;
+ } else if (f->real_file_size < td->o.file_size_low ||
+ f->real_file_size > td->o.file_size_high) {
+ if (f->file_offset > td->o.file_size_low)
+ goto err_offset;
+ /*
+ * file size given. if it's fixed, use that. if it's a
+ * range, generate a random size in-between.
+ */
+ if (td->o.file_size_low == td->o.file_size_high) {
+ f->io_size = td->o.file_size_low
+ - f->file_offset;
+ } else {
+ f->io_size = get_rand_file_size(td)
+ - f->file_offset;
+ }
+ } else
+ f->io_size = f->real_file_size - f->file_offset;
+
+ if (f->io_size == -1ULL)
+ total_size = -1ULL;
+ else
+ total_size += f->io_size;
+
+ if (f->filetype == FIO_TYPE_FILE &&
+ (f->io_size + f->file_offset) > f->real_file_size &&
+ !(td->io_ops->flags & FIO_DISKLESSIO)) {
+ need_extend++;
+ extend_size += (f->io_size + f->file_offset);
+ f->flags |= FIO_FILE_EXTEND;
+ }
+ }
+
+ if (!td->o.size || td->o.size > total_size)
+ td->o.size = total_size;
+
+ /*
+ * See if we need to extend some files
+ */
+ if (need_extend) {
+ temp_stall_ts = 1;
+ log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
+ td->o.name, need_extend, extend_size >> 20);
+
+ for_each_file(td, f, i) {
+ unsigned long long old_len, extend_len;
+
+ if (!(f->flags & FIO_FILE_EXTEND))
+ continue;
+
+ assert(f->filetype == FIO_TYPE_FILE);
+ f->flags &= ~FIO_FILE_EXTEND;
+ old_len = f->real_file_size;
+ extend_len = f->io_size + f->file_offset - old_len;
+ f->real_file_size = (f->io_size + f->file_offset);
+ err = extend_file(td, f);
+ if (err)
+ break;
+
+ err = __file_invalidate_cache(td, f, old_len,
+ extend_len);
+ close(f->fd);
+ f->fd = -1;
+ if (err)
+ break;
+ }
+ temp_stall_ts = 0;
+ }
- err = open_files(td);
if (err)
return err;
+ if (!td->o.zone_size)
+ td->o.zone_size = td->o.size;
+
/*
- * Recalculate the total file size now that files are set up.
+ * iolog already set the total io size, if we read back
+ * stored entries.
*/
- td->total_file_size = 0;
- for_each_file(td, f, i)
- td->total_file_size += f->file_size;
+ if (!td->o.read_iolog_file)
+ td->total_io_size = td->o.size * td->o.loops;
+ return 0;
+err_offset:
+ log_err("%s: you need to specify valid offset=\n", td->o.name);
+ return 1;
+}
+
+int init_random_map(struct thread_data *td)
+{
+ unsigned long long blocks, num_maps;
+ struct fio_file *f;
+ unsigned int i;
- td->total_file_size = (td->total_file_size * td->nr_files) / td->open_files;
+ if (td->o.norandommap || !td_random(td))
+ return 0;
- td->io_size = td->total_file_size;
- if (td->io_size == 0) {
- log_err("%s: no io blocks\n", td->name);
- td_verror(td, EINVAL, "total_file_size");
- return 1;
+ for_each_file(td, f, i) {
+ blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
+ (unsigned long long) td->o.rw_min_bs;
+ num_maps = (blocks + BLOCKS_PER_MAP - 1) /
+ (unsigned long long) BLOCKS_PER_MAP;
+ f->file_map = smalloc(num_maps * sizeof(int));
+ if (f->file_map) {
+ f->num_maps = num_maps;
+ continue;
+ }
+ if (!td->o.softrandommap) {
+ log_err("fio: failed allocating random map. If running"
+ " a large number of jobs, try the 'norandommap'"
+ " option or set 'softrandommap'. Or give"
+ " a larger --alloc-size to fio.\n");
+ return 1;
+ }
+
+ log_info("fio: file %s failed allocating random map. Running "
+ "job without.\n", f->file_name);
+ f->num_maps = 0;
}
- if (!td->zone_size)
- td->zone_size = td->io_size;
+ return 0;
+}
- td->total_io_size = td->io_size * td->loops;
+void close_files(struct thread_data *td)
+{
+ struct fio_file *f;
+ unsigned int i;
for_each_file(td, f, i)
td_io_close_file(td, f);
-
- return err;
}
-void close_files(struct thread_data *td)
+void close_and_free_files(struct thread_data *td)
{
struct fio_file *f;
- int i;
+ unsigned int i;
+
+ dprint(FD_FILE, "close files\n");
for_each_file(td, f, i) {
- if (!td->filename && f->unlink &&
- td->filetype == FIO_TYPE_FILE) {
+ if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
+ dprint(FD_FILE, "free unlink %s\n", f->file_name);
unlink(f->file_name);
- free(f->file_name);
- f->file_name = NULL;
}
td_io_close_file(td, f);
- if (f->file_map)
- free(f->file_map);
+ sfree(f->file_name);
+ f->file_name = NULL;
+
+ if (f->file_map) {
+ sfree(f->file_map);
+ f->file_map = NULL;
+ }
+ sfree(f);
}
- td->filename = NULL;
+ td->o.filename = NULL;
free(td->files);
+ td->files_index = 0;
td->files = NULL;
- td->nr_files = 0;
+ td->o.nr_files = 0;
+}
+
+static void get_file_type(struct fio_file *f)
+{
+ struct stat sb;
+
+ if (!strcmp(f->file_name, "-"))
+ f->filetype = FIO_TYPE_PIPE;
+ else
+ f->filetype = FIO_TYPE_FILE;
+
+ if (!lstat(f->file_name, &sb)) {
+ if (S_ISBLK(sb.st_mode))
+ f->filetype = FIO_TYPE_BD;
+ else if (S_ISCHR(sb.st_mode))
+ f->filetype = FIO_TYPE_CHAR;
+ else if (S_ISFIFO(sb.st_mode))
+ f->filetype = FIO_TYPE_PIPE;
+ }
+}
+
+int add_file(struct thread_data *td, const char *fname)
+{
+ int cur_files = td->files_index;
+ char file_name[PATH_MAX];
+ struct fio_file *f;
+ int len = 0;
+
+ dprint(FD_FILE, "add file %s\n", fname);
+
+ f = smalloc(sizeof(*f));
+ f->fd = -1;
+
+ dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
+
+ td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
+ td->files[cur_files] = f;
+
+ /*
+ * init function, io engine may not be loaded yet
+ */
+ if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
+ f->real_file_size = -1ULL;
+
+ if (td->o.directory)
+ len = sprintf(file_name, "%s/", td->o.directory);
+
+ sprintf(file_name + len, "%s", fname);
+ f->file_name = smalloc_strdup(file_name);
+
+ get_file_type(f);
+
+ switch (td->o.file_lock_mode) {
+ case FILE_LOCK_NONE:
+ break;
+ case FILE_LOCK_READWRITE:
+ f->lock = fio_mutex_rw_init();
+ break;
+ case FILE_LOCK_EXCLUSIVE:
+ f->lock = fio_mutex_init(1);
+ break;
+ default:
+ log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
+ assert(0);
+ }
+
+ td->files_index++;
+ if (f->filetype == FIO_TYPE_FILE)
+ td->nr_normal_files++;
+
+ dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
+ cur_files);
+
+ return cur_files;
+}
+
+void get_file(struct fio_file *f)
+{
+ dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
+ assert(f->flags & FIO_FILE_OPEN);
+ f->references++;
+}
+
+int put_file(struct thread_data *td, struct fio_file *f)
+{
+ int f_ret = 0, ret = 0;
+
+ dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
+
+ if (!(f->flags & FIO_FILE_OPEN))
+ return 0;
+
+ assert(f->references);
+ if (--f->references)
+ return 0;
+
+ if (should_fsync(td) && td->o.fsync_on_close)
+ f_ret = fsync(f->fd);
+
+ if (td->io_ops->close_file)
+ ret = td->io_ops->close_file(td, f);
+
+ if (!ret)
+ ret = f_ret;
+
+ td->nr_open_files--;
+ f->flags &= ~FIO_FILE_OPEN;
+ return ret;
+}
+
+void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
+{
+ if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
+ return;
+
+ if (f->lock_owner == td && f->lock_batch--)
+ return;
+
+ if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
+ if (ddir == DDIR_READ)
+ fio_mutex_down_read(f->lock);
+ else
+ fio_mutex_down_write(f->lock);
+ } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
+ fio_mutex_down(f->lock);
+
+ f->lock_owner = td;
+ f->lock_batch = td->o.lockfile_batch;
+ f->lock_ddir = ddir;
+}
+
+void unlock_file(struct thread_data *td, struct fio_file *f)
+{
+ if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
+ return;
+ if (f->lock_batch)
+ return;
+
+ if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
+ const int is_read = f->lock_ddir == DDIR_READ;
+ int val = fio_mutex_getval(f->lock);
+
+ if ((is_read && val == 1) || (!is_read && val == -1))
+ f->lock_owner = NULL;
+
+ if (is_read)
+ fio_mutex_up_read(f->lock);
+ else
+ fio_mutex_up_write(f->lock);
+ } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
+ int val = fio_mutex_getval(f->lock);
+
+ if (val == 0)
+ f->lock_owner = NULL;
+
+ fio_mutex_up(f->lock);
+ }
+}
+
+void unlock_file_all(struct thread_data *td, struct fio_file *f)
+{
+ if (f->lock_owner != td)
+ return;
+
+ f->lock_batch = 0;
+ unlock_file(td, f);
+}
+
+static int recurse_dir(struct thread_data *td, const char *dirname)
+{
+ struct dirent *dir;
+ int ret = 0;
+ DIR *D;
+
+ D = opendir(dirname);
+ if (!D) {
+ char buf[FIO_VERROR_SIZE];
+
+ snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
+ td_verror(td, errno, buf);
+ return 1;
+ }
+
+ while ((dir = readdir(D)) != NULL) {
+ char full_path[PATH_MAX];
+ struct stat sb;
+
+ if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
+ continue;
+
+ sprintf(full_path, "%s/%s", dirname, dir->d_name);
+
+ if (lstat(full_path, &sb) == -1) {
+ if (errno != ENOENT) {
+ td_verror(td, errno, "stat");
+ return 1;
+ }
+ }
+
+ if (S_ISREG(sb.st_mode)) {
+ add_file(td, full_path);
+ td->o.nr_files++;
+ continue;
+ }
+ if (!S_ISDIR(sb.st_mode))
+ continue;
+
+ ret = recurse_dir(td, full_path);
+ if (ret)
+ break;
+ }
+
+ closedir(D);
+ return ret;
+}
+
+int add_dir_files(struct thread_data *td, const char *path)
+{
+ int ret = recurse_dir(td, path);
+
+ if (!ret)
+ log_info("fio: opendir added %d files\n", td->o.nr_files);
+
+ return ret;
+}
+
+void dup_files(struct thread_data *td, struct thread_data *org)
+{
+ struct fio_file *f;
+ unsigned int i;
+
+ dprint(FD_FILE, "dup files: %d\n", org->files_index);
+
+ if (!org->files)
+ return;
+
+ td->files = malloc(org->files_index * sizeof(f));
+
+ for_each_file(org, f, i) {
+ struct fio_file *__f;
+
+ __f = smalloc(sizeof(*__f));
+
+ if (f->file_name)
+ __f->file_name = smalloc_strdup(f->file_name);
+
+ td->files[i] = __f;
+ }
+}
+
+/*
+ * Returns the index that matches the filename, or -1 if not there
+ */
+int get_fileno(struct thread_data *td, const char *fname)
+{
+ struct fio_file *f;
+ unsigned int i;
+
+ for_each_file(td, f, i)
+ if (!strcmp(f->file_name, fname))
+ return i;
+
+ return -1;
+}
+
+/*
+ * For log usage, where we add/open/close files automatically
+ */
+void free_release_files(struct thread_data *td)
+{
+ close_files(td);
+ td->files_index = 0;
+ td->nr_normal_files = 0;
}