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nvme: restrict management ioctls to admin

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The passthrough commands already have this restriction, but the other
operations do not. Require the same capabilities for all users as all of
these operations, which include resets and rescans, can be disruptive.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Keith Busch 2022-09-22 07:54:06 -07:00 committed by Christoph Hellwig
parent a8eb6c1ba4
commit 23e085b2de
1 changed files with 6 additions and 0 deletions
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6
drivers/nvme/host/ioctl.c
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@ -764,11 +764,17 @@ long nvme_dev_ioctl(struct file *file, unsigned int cmd,
case NVME_IOCTL_IO_CMD:
return nvme_dev_user_cmd(ctrl, argp);
case NVME_IOCTL_RESET:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
dev_warn(ctrl->device, "resetting controller\n");
return nvme_reset_ctrl_sync(ctrl);
case NVME_IOCTL_SUBSYS_RESET:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return nvme_reset_subsystem(ctrl);
case NVME_IOCTL_RESCAN:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
nvme_queue_scan(ctrl);
return 0;
default: