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| author | Amir Goldstein <amir73il@gmail.com> | 2024-02-09 17:03:55 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2024-03-05 13:40:42 +0100 |
| commit | fc8ff397b2a91590031ae08534de627f957005cb (patch) | |
| tree | 75eccaa695f54d036602532bf38b1b9911434394 /fs/fuse/fuse_i.h | |
| parent | 44350256ab943d424d70aa60a34f45060b3a36e8 (diff) | |
| download | linux-fc8ff397b2a91590031ae08534de627f957005cb.tar.gz linux-fc8ff397b2a91590031ae08534de627f957005cb.tar.bz2 linux-fc8ff397b2a91590031ae08534de627f957005cb.zip | |
fuse: prepare for opening file in passthrough mode
In preparation for opening file in passthrough mode, store the
fuse_open_out argument in ff->args to be passed into fuse_file_io_open()
with the optional backing_id member.
This will be used for setting up passthrough to backing file on open
reply with FOPEN_PASSTHROUGH flag and a valid backing_id.
Opening a file in passthrough mode may fail for several reasons, such as
missing capability, conflicting open flags or inode in caching mode.
Return EIO from fuse_file_io_open() in those cases.
The combination of FOPEN_PASSTHROUGH and FOPEN_DIRECT_IO is allowed -
it mean that read/write operations will go directly to the server,
but mmap will be done to the backing file.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 4f1681650f57..40e94ef3d093 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -213,15 +213,15 @@ enum { struct fuse_conn; struct fuse_mount; -struct fuse_release_args; +union fuse_file_args; /** FUSE specific file data */ struct fuse_file { /** Fuse connection for this file */ struct fuse_mount *fm; - /* Argument space reserved for release */ - struct fuse_release_args *release_args; + /* Argument space reserved for open/release */ + union fuse_file_args *args; /** Kernel file handle guaranteed to be unique */ u64 kh; @@ -320,6 +320,19 @@ struct fuse_args_pages { unsigned int num_pages; }; +struct fuse_release_args { + struct fuse_args args; + struct fuse_release_in inarg; + struct inode *inode; +}; + +union fuse_file_args { + /* Used during open() */ + struct fuse_open_out open_outarg; + /* Used during release() */ + struct fuse_release_args release_args; +}; + #define FUSE_ARGS(args) struct fuse_args args = {} /** The request IO state (for asynchronous processing) */ |