fuse: add FALLOCATE operation (05ba1f08) · Commits · 戴 / test

fs/fuse/file.c

+33 −0

Original line number	Diff line number	Diff line
		@@ -2171,6 +2171,37 @@ fuse_direct_IO(int rw, struct kiocb iocb, const struct iovec iov,
		return ret;
		}

		long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
		loff_t length)
		{
		struct fuse_file *ff = file->private_data;
		struct fuse_conn *fc = ff->fc;
		struct fuse_req *req;
		struct fuse_fallocate_in inarg = {
		.fh = ff->fh,
		.offset = offset,
		.length = length,
		.mode = mode
		};
		int err;

		req = fuse_get_req(fc);
		if (IS_ERR(req))
		return PTR_ERR(req);

		req->in.h.opcode = FUSE_FALLOCATE;
		req->in.h.nodeid = ff->nodeid;
		req->in.numargs = 1;
		req->in.args[0].size = sizeof(inarg);
		req->in.args[0].value = &inarg;
		fuse_request_send(fc, req);
		err = req->out.h.error;
		fuse_put_request(fc, req);

		return err;
		}
		EXPORT_SYMBOL_GPL(fuse_file_fallocate);

		static const struct file_operations fuse_file_operations = {
		.llseek = fuse_file_llseek,
		.read = do_sync_read,
		@@ -2188,6 +2219,7 @@ static const struct file_operations fuse_file_operations = {
		.unlocked_ioctl = fuse_file_ioctl,
		.compat_ioctl = fuse_file_compat_ioctl,
		.poll = fuse_file_poll,
		.fallocate = fuse_file_fallocate,
		};

		static const struct file_operations fuse_direct_io_file_operations = {
		@@ -2204,6 +2236,7 @@ static const struct file_operations fuse_direct_io_file_operations = {
		.unlocked_ioctl = fuse_file_ioctl,
		.compat_ioctl = fuse_file_compat_ioctl,
		.poll = fuse_file_poll,
		.fallocate = fuse_file_fallocate,
		/* no splice_read */
		};

+13 −1

Original line number	Diff line number	Diff line
		@@ -54,6 +54,9 @@
		* 7.18
		* - add FUSE_IOCTL_DIR flag
		* - add FUSE_NOTIFY_DELETE
		*
		* 7.19
		* - add FUSE_FALLOCATE
		*/

		#ifndef _LINUX_FUSE_H
		@@ -85,7 +88,7 @@
		#define FUSE_KERNEL_VERSION 7

		/** Minor version number of this interface */
		#define FUSE_KERNEL_MINOR_VERSION 18
		#define FUSE_KERNEL_MINOR_VERSION 19

		/** The node ID of the root inode */
		#define FUSE_ROOT_ID 1
		@@ -278,6 +281,7 @@ enum fuse_opcode {
		FUSE_POLL = 40,
		FUSE_NOTIFY_REPLY = 41,
		FUSE_BATCH_FORGET = 42,
		FUSE_FALLOCATE = 43,

		/* CUSE specific operations */
		CUSE_INIT = 4096,
		@@ -571,6 +575,14 @@ struct fuse_notify_poll_wakeup_out {
		__u64 kh;
		};

		struct fuse_fallocate_in {
		__u64 fh;
		__u64 offset;
		__u64 length;
		__u32 mode;
		__u32 padding;
		};

		struct fuse_in_header {
		__u32 len;
		__u32 opcode;