From: Jens Axboe <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>
Subject: [PATCH 2/8] io_uring: allow SQPOLL with CAP_SYS_NICE privileges
Date: Wed, 2 Sep 2020 20:20:47 -0600 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
CAP_SYS_ADMIN is too restrictive for a lot of uses cases, allow
CAP_SYS_NICE based on the premise that such users are already allowed
to raise the priority of tasks.
Signed-off-by: Jens Axboe <[email protected]>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 4766cc54144d..e2e62dbc4b93 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -7552,7 +7552,7 @@ static int io_sq_offload_create(struct io_ring_ctx *ctx,
if (ctx->flags & IORING_SETUP_SQPOLL) {
ret = -EPERM;
- if (!capable(CAP_SYS_ADMIN))
+ if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_NICE))
goto err;
/*
--
2.28.0
next prev parent reply other threads:[~2020-09-03 2:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-03 2:20 [PATCHSET for-next 0/8] io_uring SQPOLL improvements Jens Axboe
2020-09-03 2:20 ` [PATCH 1/8] io_uring: io_sq_thread() doesn't need to flush signals Jens Axboe
2020-09-03 2:20 ` Jens Axboe [this message]
2020-09-03 2:20 ` [PATCH 3/8] io_uring: use private ctx wait queue entries for SQPOLL Jens Axboe
2020-09-03 2:20 ` [PATCH 4/8] io_uring: move SQPOLL post-wakeup ring need wakeup flag into wake handler Jens Axboe
2020-09-03 2:20 ` [PATCH 5/8] io_uring: split work handling part of SQPOLL into helper Jens Axboe
2020-09-03 2:20 ` [PATCH 6/8] io_uring: split SQPOLL data into separate structure Jens Axboe
2020-09-03 2:20 ` [PATCH 7/8] io_uring: base SQPOLL handling off io_sq_data Jens Axboe
2020-09-03 2:20 ` [PATCH 8/8] io_uring: enable IORING_SETUP_ATTACH_WQ to attach to SQPOLL thread too Jens Axboe
2020-09-07 8:56 ` Xiaoguang Wang
2020-09-07 14:00 ` Pavel Begunkov
2020-09-07 16:11 ` Jens Axboe
2020-09-07 16:14 ` Jens Axboe
2020-09-07 16:18 ` Jens Axboe
2020-09-08 2:28 ` Xiaoguang Wang
2020-09-08 2:53 ` Xiaoguang Wang
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