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fuse: add FUSE_NO_OPEN_SUPPORT flag to INIT

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Here some additional changes to set a capability flag so that clients can
detect when it's appropriate to return -ENOSYS from open.

This amends the following commit introduced in 3.14:

  7678ac5061  fuse: support clients that don't implement 'open'

However we can only add the flag to 3.15 and later since there was no
protocol version update in 3.14.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: <stable@vger.kernel.org> # v3.15+
This commit is contained in:
Andrew Gallagher 2014-07-22 16:37:43 +02:00 • committed by Miklos Szeredi
parent a800bad366
commit d7afaec0b5
2 changed files with 4 additions and 1 deletions
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3
include/uapi/linux/fuse.h
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@ -101,6 +101,7 @@
* - add FATTR_CTIME
* - add ctime and ctimensec to fuse_setattr_in
* - add FUSE_RENAME2 request
* - add FUSE_NO_OPEN_SUPPORT flag
*/
#ifndef _LINUX_FUSE_H
@ -229,6 +230,7 @@ struct fuse_file_lock {
* FUSE_READDIRPLUS_AUTO: adaptive readdirplus
* FUSE_ASYNC_DIO: asynchronous direct I/O submission
* FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
* FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
*/
#define FUSE_ASYNC_READ (1 << 0)
#define FUSE_POSIX_LOCKS (1 << 1)
@ -247,6 +249,7 @@ struct fuse_file_lock {
#define FUSE_READDIRPLUS_AUTO (1 << 14)
#define FUSE_ASYNC_DIO (1 << 15)
#define FUSE_WRITEBACK_CACHE (1 << 16)
#define FUSE_NO_OPEN_SUPPORT (1 << 17)
/**
* CUSE INIT request/reply flags