X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=filesetup.c;h=48b034a6b4f83d4913e94a19a72611e8d1755e80;hp=356580e74c1276ccde5af550116e3bfd6813321b;hb=cf3d609747c3e070001173b17ea95e9d6f46b15c;hpb=413dd459a7710ba421061e840dd9ac3161c70f20

diff --git a/filesetup.c b/filesetup.c
index 356580e7..48b034a6 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -15,7 +15,8 @@ static int file_ok(struct thread_data *td, struct fio_file *f)
 {
 	struct stat st;
 
-	if (td->filetype != FIO_TYPE_FILE || (td->io_ops->flags & FIO_NULLIO))
+	if (td->filetype != FIO_TYPE_FILE ||
+	    (td->io_ops->flags & FIO_DISKLESSIO))
 		return 0;
 
 	if (lstat(f->file_name, &st) == -1)
@@ -97,7 +98,7 @@ err:
 static int create_files(struct thread_data *td)
 {
 	struct fio_file *f;
-	int i, err, need_create;
+	int i, err, need_create, can_extend;
 
 	for_each_file(td, f, i)
 		f->file_size = td->total_file_size / td->nr_files;
@@ -105,7 +106,8 @@ static int create_files(struct thread_data *td)
 	/*
 	 * unless specifically asked for overwrite, let normal io extend it
 	 */
-	if (!td->overwrite)
+	can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
+	if (can_extend)
 		return 0;
 
 	need_create = 0;
@@ -159,16 +161,6 @@ static int file_size(struct thread_data *td, struct fio_file *f)
 {
 	struct stat st;
 
-	/*
-	 * if we are not doing real io, just pretend the file is as large
-	 * as the size= given. this works fine with nrfiles > 1 as well,
-	 * we only really care about it being at least as big as size=
-	 */
-	if (td->io_ops->flags & FIO_NULLIO) {
-		f->real_file_size = f->file_size = td->total_file_size;
-		return 0;
-	}
-
 	if (td->overwrite) {
 		if (fstat(f->fd, &st) == -1) {
 			td_verror(td, errno, "fstat");
@@ -234,16 +226,19 @@ int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 {
 	int ret = 0;
 
+	if (td->odirect)
+		return 0;
+
 	/*
 	 * FIXME: add blockdev flushing too
 	 */
-	if (td->io_ops->flags & FIO_MMAPIO)
+	if (f->mmap)
 		ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
-	else if (td->filetype == FIO_TYPE_FILE)
+	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)
+	} else if (td->filetype == FIO_TYPE_BD) {
 		ret = blockdev_invalidate_cache(f->fd);
-	else if (td->filetype == FIO_TYPE_CHAR)
+	} else if (td->filetype == FIO_TYPE_CHAR)
 		ret = 0;
 
 	if (ret < 0) {
@@ -251,171 +246,92 @@ int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 		return 1;
 	}
 
-	return 0;
+	return ret;
 }
 
-static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
+void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 {
-	int flags;
+	close(f->fd);
+	f->fd = -1;
+}
 
-	if (td_rw(td))
-		flags = PROT_READ | PROT_WRITE;
-	else if (td_write(td)) {
-		flags = PROT_WRITE;
+int generic_open_file(struct thread_data *td, struct fio_file *f)
+{
+	int flags = 0;
 
-		if (td->verify != VERIFY_NONE)
-			flags |= PROT_READ;
-	} else
-		flags = PROT_READ;
+	if (td->odirect)
+		flags |= OS_O_DIRECT;
+	if (td->sync_io)
+		flags |= O_SYNC;
 
-	f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
-	if (f->mmap == MAP_FAILED) {
-		f->mmap = NULL;
-		td_verror(td, errno, "mmap");
-		return 1;
-	}
+	if (td_write(td) || td_rw(td)) {
+		flags |= O_RDWR;
 
-	if (td->invalidate_cache && file_invalidate_cache(td, f))
-		return 1;
+		if (td->filetype == FIO_TYPE_FILE)
+			flags |= O_CREAT;
 
-	if (!td_random(td)) {
-		if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
-			td_verror(td, errno, "madvise");
-			return 1;
-		}
+		f->fd = open(f->file_name, flags, 0600);
 	} else {
-		if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
-			td_verror(td, errno, "madvise");
-			return 1;
-		}
-	}
+		if (td->filetype == FIO_TYPE_CHAR)
+			flags |= O_RDWR;
+		else
+			flags |= O_RDONLY;
 
-	return 0;
-}
+		f->fd = open(f->file_name, flags);
+	}
 
-static int setup_files_mmap(struct thread_data *td)
-{
-	struct fio_file *f;
-	int i, err = 0;
+	if (f->fd == -1) {
+		int __e = errno;
 
-	for_each_file(td, f, i) {
-		err = __setup_file_mmap(td, f);
-		if (err)
-			break;
+		td_verror(td, __e, "open");
+		if (__e == EINVAL && td->odirect)
+			log_err("fio: destination does not support O_DIRECT\n");
+		return 1;
 	}
 
-	return err;
-}
+	if (get_file_size(td, f))
+		goto err;
 
-static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
-{
 	if (td->invalidate_cache && file_invalidate_cache(td, f))
-		return 1;
+		goto err;
 
 	if (!td_random(td)) {
 		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
 			td_verror(td, errno, "fadvise");
-			return 1;
+			goto err;
 		}
 	} else {
 		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
 			td_verror(td, errno, "fadvise");
-			return 1;
+			goto err;
 		}
 	}
 
 	return 0;
+err:
+	close(f->fd);
+	return 1;
 }
 
-static int setup_files_plain(struct thread_data *td)
+int open_files(struct thread_data *td)
 {
 	struct fio_file *f;
 	int i, err = 0;
 
 	for_each_file(td, f, i) {
-		err = __setup_file_plain(td, f);
+		err = td_io_open_file(td, f);
 		if (err)
 			break;
-	}
 
-	return err;
-}
-
-static int setup_file(struct thread_data *td, struct fio_file *f)
-{
-	int flags = 0;
-
-	if (td->io_ops->flags & FIO_NETIO)
-		return 0;
-
-	/*
-	 * we need a valid file descriptor, but don't create a real file.
-	 * lets just dup stdout, seems like a sensible approach.
-	 */
-	if (td->io_ops->flags & FIO_NULLIO)
-		f->fd = dup(STDOUT_FILENO);
-	else {
-		if (td->odirect)
-			flags |= OS_O_DIRECT;
-		if (td->sync_io)
-			flags |= O_SYNC;
-
-		if (td_write(td) || td_rw(td)) {
-			flags |= O_RDWR;
-
-			if (td->filetype == FIO_TYPE_FILE) {
-				if (!td->overwrite)
-					flags |= O_TRUNC;
-
-				flags |= O_CREAT;
-			}
-
-			f->fd = open(f->file_name, flags, 0600);
-		} else {
-			if (td->filetype == FIO_TYPE_CHAR)
-				flags |= O_RDWR;
-			else
-				flags |= O_RDONLY;
-
-			f->fd = open(f->file_name, flags);
-		}
-	}
-
-	if (f->fd == -1) {
-		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 (get_file_size(td, f))
-		return 1;
-
-	return 0;
-}
-
-int open_files(struct thread_data *td)
-{
-	struct fio_file *f;
-	int i, err = 0;
-
-	for_each_file(td, f, i) {
-		err = setup_file(td, f);
-		if (err)
+		if (td->open_files == td->nr_open_files)
 			break;
 	}
 
 	if (!err)
 		return 0;
 
-	for_each_file(td, f, i) {
-		if (f->fd != -1) {
-			close(f->fd);
-			f->fd = -1;
-		}
-	}
+	for_each_file(td, f, i)
+		td_io_close_file(td, f);
 
 	return err;
 }
@@ -446,6 +362,8 @@ int setup_files(struct thread_data *td)
 	for_each_file(td, f, i)
 		td->total_file_size += f->file_size;
 
+	td->total_file_size = (td->total_file_size * td->nr_files) / td->open_files;
+
 	td->io_size = td->total_file_size;
 	if (td->io_size == 0) {
 		log_err("%s: no io blocks\n", td->name);
@@ -458,17 +376,8 @@ int setup_files(struct thread_data *td)
 
 	td->total_io_size = td->io_size * td->loops;
 
-	if (td->io_ops->flags & FIO_MMAPIO)
-		err = setup_files_mmap(td);
-	else
-		err = setup_files_plain(td);
-
-	for_each_file(td, f, i) {
-		if (f->fd != -1) {
-			close(f->fd);
-			f->fd = -1;
-		}
-	}
+	for_each_file(td, f, i)
+		td_io_close_file(td, f);
 
 	return err;
 }
@@ -485,14 +394,11 @@ void close_files(struct thread_data *td)
 			free(f->file_name);
 			f->file_name = NULL;
 		}
-		if (f->fd != -1) {
-			close(f->fd);
-			f->fd = -1;
-		}
-		if (f->mmap) {
-			munmap(f->mmap, f->file_size);
-			f->mmap = NULL;
-		}
+
+		td_io_close_file(td, f);
+
+		if (f->file_map)
+			free(f->file_map);
 	}
 
 	td->filename = NULL;