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fuse: implement nonseekable open 

Let the client request nonseekable open using FOPEN_NONSEEKABLE and
call nonseekable_open() on the file if requested.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Tejun Heo 2008-10-16 16:08:57 +02:00 committed by Miklos Szeredi
parent 29d434b39c
commit a7c1b990f7
2 changed files with 8 additions and 1 deletions
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2
fs/fuse/file.c
View File

@ -101,6 +101,8 @@ void fuse_finish_open(struct inode *inode, struct file *file,
file->f_op = &fuse_direct_io_file_operations;
if (!(outarg->open_flags & FOPEN_KEEP_CACHE))
invalidate_inode_pages2(inode->i_mapping);
if (outarg->open_flags & FOPEN_NONSEEKABLE)
nonseekable_open(inode, file);
ff->fh = outarg->fh;
file->private_data = fuse_file_get(ff);
}

7
include/linux/fuse.h
View File

@ -17,6 +17,9 @@
* - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
* - add blksize field to fuse_attr
* - add file flags field to fuse_read_in and fuse_write_in
*
* 7.10
* - add nonseekable open flag
*/
#ifndef _LINUX_FUSE_H
@ -29,7 +32,7 @@
#define FUSE_KERNEL_VERSION 7
/** Minor version number of this interface */
#define FUSE_KERNEL_MINOR_VERSION 9
#define FUSE_KERNEL_MINOR_VERSION 10
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
@ -101,9 +104,11 @@ struct fuse_file_lock {
*
* FOPEN_DIRECT_IO: bypass page cache for this open file
* FOPEN_KEEP_CACHE: don't invalidate the data cache on open
* FOPEN_NONSEEKABLE: the file is not seekable
*/
#define FOPEN_DIRECT_IO (1 << 0)
#define FOPEN_KEEP_CACHE (1 << 1)
#define FOPEN_NONSEEKABLE (1 << 2)
/**
* INIT request/reply flags