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fuse: implement ->tmpfile()

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This is basically equivalent to the FUSE_CREATE operation which creates and
opens a regular file.

Add a new FUSE_TMPFILE operation, otherwise just reuse the protocol and the
code for FUSE_CREATE.

Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi 2022-09-24 07:00:00 +02:00
parent 863f144f12
commit 7d37539037
3 changed files with 29 additions and 4 deletions
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6
include/uapi/linux/fuse.h
View file

@ -194,6 +194,9 @@
* - add FUSE_SECURITY_CTX init flag
* - add security context to create, mkdir, symlink, and mknod requests
* - add FUSE_HAS_INODE_DAX, FUSE_ATTR_DAX
*
* 7.37
* - add FUSE_TMPFILE
*/
#ifndef _LINUX_FUSE_H
@ -229,7 +232,7 @@
#define FUSE_KERNEL_VERSION 7
/** Minor version number of this interface */
#define FUSE_KERNEL_MINOR_VERSION 36
#define FUSE_KERNEL_MINOR_VERSION 37
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
@ -537,6 +540,7 @@ enum fuse_opcode {
FUSE_SETUPMAPPING = 48,
FUSE_REMOVEMAPPING = 49,
FUSE_SYNCFS = 50,
FUSE_TMPFILE = 51,
/* CUSE specific operations */
CUSE_INIT = 4096,