From: Greg KH <gregkh@linuxfoundation.org>
To: Xie Yongji <xieyongji@bytedance.com>
Cc: christian.brauner@ubuntu.com, hch@infradead.org,
arve@android.com, tkjos@android.com, maco@android.com,
joel@joelfernandes.org, hridya@google.com, surenb@google.com,
viro@zeniv.linux.org.uk, sargun@sargun.me, keescook@chromium.org,
jasowang@redhat.com, devel@driverdev.osuosl.org,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 1/2] file: Export receive_fd() to modules
Date: Thu, 1 Apr 2021 11:52:33 +0200 [thread overview]
Message-ID: <YGWX4aIE5QNxsJQ9@kroah.com> (raw)
In-Reply-To: <20210401090932.121-2-xieyongji@bytedance.com>
On Thu, Apr 01, 2021 at 05:09:31PM +0800, Xie Yongji wrote:
> Export receive_fd() so that some modules can use
> it to pass file descriptor across processes without
> missing any security stuffs.
>
> Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
> ---
> fs/file.c | 6 ++++++
> include/linux/file.h | 7 +++----
> 2 files changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/fs/file.c b/fs/file.c
> index 56986e55befa..2a80c6c3e147 100644
> --- a/fs/file.c
> +++ b/fs/file.c
> @@ -1107,6 +1107,12 @@ int receive_fd_replace(int new_fd, struct file *file, unsigned int o_flags)
> return new_fd;
> }
>
> +int receive_fd(struct file *file, unsigned int o_flags)
> +{
> + return __receive_fd(file, NULL, o_flags);
> +}
> +EXPORT_SYMBOL(receive_fd);
What module uses this?
And why not EXPORT_SYMBOL_GPL()?
thanks,
greg k-h
next prev parent reply other threads:[~2021-04-01 9:53 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 9:09 [PATCH 0/2] Export receive_fd() to modules and do some cleanups Xie Yongji
2021-04-01 9:09 ` [PATCH 1/2] file: Export receive_fd() to modules Xie Yongji
2021-04-01 9:52 ` Greg KH [this message]
2021-04-01 10:24 ` Yongji Xie
2021-04-01 9:09 ` [PATCH 2/2] binder: Use receive_fd() to receive file from another process Xie Yongji
2021-04-01 9:54 ` Greg KH
2021-04-01 10:12 ` Yongji Xie
2021-04-01 10:42 ` Greg KH
2021-04-01 11:29 ` Yongji Xie
2021-04-01 11:33 ` Greg KH
2021-04-01 12:28 ` Yongji Xie
2021-04-01 14:09 ` Greg KH
2021-04-02 9:12 ` Kees Cook
2021-04-01 10:40 ` Christian Brauner
2021-04-01 11:11 ` Yongji Xie
2021-04-16 5:19 ` Al Viro
2021-04-16 5:55 ` Al Viro
2021-04-16 13:42 ` Christian Brauner
2021-04-16 14:09 ` Al Viro
2021-04-16 15:13 ` Christian Brauner
2021-04-16 15:35 ` Al Viro
2021-04-16 15:58 ` Christian Brauner
2021-04-16 16:00 ` Christian Brauner
2021-04-16 17:00 ` Al Viro
2021-04-16 17:30 ` Al Viro
2021-04-17 1:30 ` Al Viro
2021-04-01 9:53 ` [PATCH 0/2] Export receive_fd() to modules and do some cleanups Greg KH
2021-04-01 10:00 ` Yongji Xie
2021-04-01 10:20 ` Christian Brauner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YGWX4aIE5QNxsJQ9@kroah.com \
--to=gregkh@linuxfoundation.org \
--cc=arve@android.com \
--cc=christian.brauner@ubuntu.com \
--cc=devel@driverdev.osuosl.org \
--cc=hch@infradead.org \
--cc=hridya@google.com \
--cc=jasowang@redhat.com \
--cc=joel@joelfernandes.org \
--cc=keescook@chromium.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=maco@android.com \
--cc=sargun@sargun.me \
--cc=surenb@google.com \
--cc=tkjos@android.com \
--cc=viro@zeniv.linux.org.uk \
--cc=xieyongji@bytedance.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).