linux-kernel - Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]

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Message-ID: <CA+55aFzaTQJp6aHG_9+W2ShxeZncq7k9G3FkVFjFm7W=ECUiMw@mail.gmail.com>
Date:   Thu, 12 Jul 2018 14:29:22 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     David Howells <dhowells@...hat.com>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Andrew Lutomirski <luto@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Linux API <linux-api@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jann Horn <jannh@...gle.com>, Tycho Andersen <tycho@...ho.ws>
Subject: Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for
 superblock creation [ver #9]

On Thu, Jul 12, 2018 at 2:00 PM David Howells <dhowells@...hat.com> wrote:
>
>
> for example:
>
>         fd = fsopen("ext4", FSOPEN_CLOEXEC);
>         fsconfig(fd, fsconfig_blockdev, "dev.data", "/dev/sda1", ...);
>         fsconfig(fd, fsconfig_blockdev, "dev.journal", "/dev/sda2", ...);

Ok, that looks good to me. It also avoids the parsing issue with using
an interface like "write()", where the expectation is that you can
append things etc.

              Linus