From: "Marc-André Lureau" <marcandre.lureau@redhat.com>
To: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, sgarzare@redhat.com,
davem@davemloft.net, kuba@kernel.org,
"Marc-André Lureau" <marcandre.lureau@redhat.com>
Subject: [PATCH 08/10] vhost/vsock: save owner pid & creds
Date: Thu, 21 Oct 2021 16:37:12 +0400 [thread overview]
Message-ID: <20211021123714.1125384-9-marcandre.lureau@redhat.com> (raw)
In-Reply-To: <20211021123714.1125384-1-marcandre.lureau@redhat.com>
After VHOST_SET_OWNER success, save the owner process credentials.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
drivers/vhost/vsock.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index 938aefbc75ec..3067436cddfc 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -58,6 +58,8 @@ struct vhost_vsock {
u32 guest_cid;
bool seqpacket_allow;
+ struct pid *owner_pid;
+ const struct cred *owner_cred;
};
static u32 vhost_transport_get_local_cid(void)
@@ -774,6 +776,10 @@ static int vhost_vsock_dev_release(struct inode *inode, struct file *file)
vhost_dev_cleanup(&vsock->dev);
kfree(vsock->dev.vqs);
+
+ put_pid(vsock->owner_pid);
+ put_cred(vsock->owner_cred);
+
vhost_vsock_free(vsock);
return 0;
}
@@ -851,6 +857,22 @@ static int vhost_vsock_set_features(struct vhost_vsock *vsock, u64 features)
return -EFAULT;
}
+static long vhost_vsock_set_owner(struct vhost_vsock *vsock)
+{
+ long r;
+
+ mutex_lock(&vsock->dev.mutex);
+ r = vhost_dev_set_owner(&vsock->dev);
+ if (r)
+ goto out;
+ vsock->owner_pid = get_pid(task_tgid(current));
+ vsock->owner_cred = get_current_cred();
+ vhost_vsock_flush(vsock);
+out:
+ mutex_unlock(&vsock->dev.mutex);
+ return r;
+}
+
static long vhost_vsock_dev_ioctl(struct file *f, unsigned int ioctl,
unsigned long arg)
{
@@ -894,6 +916,8 @@ static long vhost_vsock_dev_ioctl(struct file *f, unsigned int ioctl,
return -EOPNOTSUPP;
vhost_set_backend_features(&vsock->dev, features);
return 0;
+ case VHOST_SET_OWNER:
+ return vhost_vsock_set_owner(vsock);
default:
mutex_lock(&vsock->dev.mutex);
r = vhost_dev_ioctl(&vsock->dev, ioctl, argp);
--
2.33.0.721.g106298f7f9
next prev parent reply other threads:[~2021-10-21 12:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 12:37 [PATCH 00/10] RFC: SO_PEERCRED for AF_VSOCK Marc-André Lureau
2021-10-21 12:37 ` [PATCH 01/10] sock: move sock_init_peercred() from af_unix Marc-André Lureau
2021-10-21 12:37 ` [PATCH 02/10] sock: move sock_copy_peercred() " Marc-André Lureau
2021-10-21 12:37 ` [PATCH 03/10] vsock: owner field is specific to VMCI Marc-André Lureau
2021-10-26 11:16 ` Stefano Garzarella
2021-10-27 8:13 ` Jorgen Hansen
2021-11-05 8:21 ` Marc-André Lureau
2021-10-21 12:37 ` [PATCH 04/10] sock: add sock_swap_peercred Marc-André Lureau
2021-10-21 12:37 ` [PATCH 05/10] virtio/vsock: add copy_peercred() to virtio_transport Marc-André Lureau
2021-10-26 11:17 ` Stefano Garzarella
2021-10-21 12:37 ` [PATCH 06/10] vsock: set socket peercred Marc-André Lureau
2021-10-26 11:18 ` Stefano Garzarella
2021-10-21 12:37 ` [PATCH 07/10] vsock/loopback: implement copy_peercred() Marc-André Lureau
2021-10-26 11:18 ` Stefano Garzarella
2021-10-21 12:37 ` Marc-André Lureau [this message]
2021-10-21 12:37 ` [PATCH 09/10] vhost/vsock: implement copy_peercred Marc-André Lureau
2021-10-21 12:37 ` [PATCH 10/10] vsock/virtio: clear peer creds on connect Marc-André Lureau
2021-10-21 13:34 ` [PATCH 00/10] RFC: SO_PEERCRED for AF_VSOCK Stefano Garzarella
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