linux-kernel - [PATCH v6 3/8] io_uring/cmd: Pass compat mode in issue

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230913152744.2333228-4-leitao@debian.org>
Date:   Wed, 13 Sep 2023 08:27:39 -0700
From:   Breno Leitao <leitao@...ian.org>
To:     sdf@...gle.com, axboe@...nel.dk, asml.silence@...il.com,
        willemdebruijn.kernel@...il.com, kuba@...nel.org,
        pabeni@...hat.com, martin.lau@...ux.dev, krisman@...e.de
Cc:     bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, io-uring@...r.kernel.org
Subject: [PATCH v6 3/8] io_uring/cmd: Pass compat mode in issue_flags

Create a new flag to track if the operation is running compat mode.
This basically check the context->compat and pass it to the issue_flags,
so, it could be queried later in the callbacks.

Reviewed-by: Gabriel Krisman Bertazi <krisman@...e.de>
Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 include/linux/io_uring.h | 1 +
 io_uring/uring_cmd.c     | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h
index 106cdc55ff3b..bc53b35966ed 100644
--- a/include/linux/io_uring.h
+++ b/include/linux/io_uring.h
@@ -20,6 +20,7 @@ enum io_uring_cmd_flags {
 	IO_URING_F_SQE128		= (1 << 8),
 	IO_URING_F_CQE32		= (1 << 9),
 	IO_URING_F_IOPOLL		= (1 << 10),
+	IO_URING_F_COMPAT		= (1 << 11),
 };
 
 struct io_uring_cmd {
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c
index 537795fddc87..60f843a357e0 100644
--- a/io_uring/uring_cmd.c
+++ b/io_uring/uring_cmd.c
@@ -128,6 +128,8 @@ int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags)
 		issue_flags |= IO_URING_F_SQE128;
 	if (ctx->flags & IORING_SETUP_CQE32)
 		issue_flags |= IO_URING_F_CQE32;
+	if (ctx->compat)
+		issue_flags |= IO_URING_F_COMPAT;
 	if (ctx->flags & IORING_SETUP_IOPOLL) {
 		if (!file->f_op->uring_cmd_iopoll)
 			return -EOPNOTSUPP;
-- 
2.34.1