linux-kernel - Re: [PATCH 1/4] statx: Add a system call to make enhanced file info available

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Date:   Fri, 18 Nov 2016 10:29:04 +0000
From:   David Howells <dhowells@...hat.com>
To:     Dave Chinner <david@...morbit.com>
Cc:     dhowells@...hat.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH 1/4] statx: Add a system call to make enhanced file info available

Dave Chinner <david@...morbit.com> wrote:

> > (13) FS_IOC_GETFLAGS value.  These could be translated to BSD's st_flags.
> >      Note that the Linux IOC flags are a mess and filesystems such as Ext4
> >      define flags that aren't in linux/fs.h, so translation in the kernel
> >      may be a necessity (or, possibly, we provide the filesystem type too).
> 
> And we now also have FS_IOC_FSGETXATTR that extends the flags
> and information userspace can get from filesystems.

Btw, can you point me at the manpage that defines the fsxattr struct and its
flags?

Also, ioctl_list(2) should probably include FS_IOC_FS[GS]ETXATTR.

David