Also known as 'vmchannel', a transport mechanism is needed for
communication between the host userspace and guest userspace for
achieving things like making clipboard copy/paste work seamlessly across
the host and guest, locking the guest screen in case the vnc session to
the guest is closed and so on. This can be used in offline cases as
well, for example with libguestfs to probe which file systems the guest
uses, the apps installed, etc.
Virtio-serial is just the transport protocol that will enable such
applications to be written. It has two parts: (a) device emulation in
qemu that presents a virtio-pci device to the guest and (b) a guest
driver that presents a char device interface to userspace applications.
Signed-off-by: Dominick Grift <[email protected]>
---
policy/modules/kernel/terminal.fc | 1 +
policy/modules/kernel/terminal.if | 19 +++++++++++++++++++
policy/modules/kernel/terminal.te | 4 ++++
3 files changed, 24 insertions(+)
diff --git a/policy/modules/kernel/terminal.fc b/policy/modules/kernel/terminal.fc
index 7d45d15..0ea25b6 100644
--- a/policy/modules/kernel/terminal.fc
+++ b/policy/modules/kernel/terminal.fc
@@ -19,6 +19,7 @@
/dev/slamr[0-9]+ -c gen_context(system_u:object_r:tty_device_t,s0)
/dev/tty -c gen_context(system_u:object_r:devtty_t,s0)
/dev/ttySG.* -c gen_context(system_u:object_r:tty_device_t,s0)
+/dev/vport[0-9]p[0-9]+ -c gen_context(system_u:object_r:virtio_device_t,s0)
/dev/xvc[^/]* -c gen_context(system_u:object_r:tty_device_t,s0)
/dev/pty/.* -c gen_context(system_u:object_r:bsdpty_device_t,s0)
diff --git a/policy/modules/kernel/terminal.if b/policy/modules/kernel/terminal.if
index 771bce1..cbb729b 100644
--- a/policy/modules/kernel/terminal.if
+++ b/policy/modules/kernel/terminal.if
@@ -1512,3 +1512,22 @@ interface(`term_dontaudit_use_all_user_ttys',`
refpolicywarn(`$0() is deprecated, use term_dontaudit_use_all_ttys() instead.')
term_dontaudit_use_all_ttys($1)
')
+
+#####################################
+## <summary>
+## Read from and write virtio console.
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`term_use_virtio_console',`
+ gen_require(`
+ type virtio_device_t;
+ ')
+
+ dev_list_all_dev_nodes($1)
+ allow $1 virtio_device_t:chr_file rw_term_perms;
+')
diff --git a/policy/modules/kernel/terminal.te b/policy/modules/kernel/terminal.te
index 224e500..a4c9998 100644
--- a/policy/modules/kernel/terminal.te
+++ b/policy/modules/kernel/terminal.te
@@ -56,3 +56,7 @@ dev_node(tty_device_t)
#
type usbtty_device_t, serial_device;
dev_node(usbtty_device_t)
+
+type virtio_device_t, serial_device;
+dev_node(virtio_device_t)
+
--
1.8.3.1
On Tue 24 Sep 2013 09:39:56 AM EDT, Dominick Grift wrote:
> Also known as 'vmchannel', a transport mechanism is needed for
> communication between the host userspace and guest userspace for
> achieving things like making clipboard copy/paste work seamlessly across
> the host and guest, locking the guest screen in case the vnc session to
> the guest is closed and so on. This can be used in offline cases as
> well, for example with libguestfs to probe which file systems the guest
> uses, the apps installed, etc.
>
> Virtio-serial is just the transport protocol that will enable such
> applications to be written. It has two parts: (a) device emulation in
> qemu that presents a virtio-pci device to the guest and (b) a guest
> driver that presents a char device interface to userspace applications.
Merged.
> Signed-off-by: Dominick Grift <[email protected]>
> ---
> policy/modules/kernel/terminal.fc | 1 +
> policy/modules/kernel/terminal.if | 19 +++++++++++++++++++
> policy/modules/kernel/terminal.te | 4 ++++
> 3 files changed, 24 insertions(+)
>
> diff --git a/policy/modules/kernel/terminal.fc b/policy/modules/kernel/terminal.fc
> index 7d45d15..0ea25b6 100644
> --- a/policy/modules/kernel/terminal.fc
> +++ b/policy/modules/kernel/terminal.fc
> @@ -19,6 +19,7 @@
> /dev/slamr[0-9]+ -c gen_context(system_u:object_r:tty_device_t,s0)
> /dev/tty -c gen_context(system_u:object_r:devtty_t,s0)
> /dev/ttySG.* -c gen_context(system_u:object_r:tty_device_t,s0)
> +/dev/vport[0-9]p[0-9]+ -c gen_context(system_u:object_r:virtio_device_t,s0)
> /dev/xvc[^/]* -c gen_context(system_u:object_r:tty_device_t,s0)
>
> /dev/pty/.* -c gen_context(system_u:object_r:bsdpty_device_t,s0)
> diff --git a/policy/modules/kernel/terminal.if b/policy/modules/kernel/terminal.if
> index 771bce1..cbb729b 100644
> --- a/policy/modules/kernel/terminal.if
> +++ b/policy/modules/kernel/terminal.if
> @@ -1512,3 +1512,22 @@ interface(`term_dontaudit_use_all_user_ttys',`
> refpolicywarn(`$0() is deprecated, use term_dontaudit_use_all_ttys() instead.')
> term_dontaudit_use_all_ttys($1)
> ')
> +
> +#####################################
> +## <summary>
> +## Read from and write virtio console.
> +## </summary>
> +## <param name="domain">
> +## <summary>
> +## Domain allowed access.
> +## </summary>
> +## </param>
> +#
> +interface(`term_use_virtio_console',`
> + gen_require(`
> + type virtio_device_t;
> + ')
> +
> + dev_list_all_dev_nodes($1)
> + allow $1 virtio_device_t:chr_file rw_term_perms;
> +')
> diff --git a/policy/modules/kernel/terminal.te b/policy/modules/kernel/terminal.te
> index 224e500..a4c9998 100644
> --- a/policy/modules/kernel/terminal.te
> +++ b/policy/modules/kernel/terminal.te
> @@ -56,3 +56,7 @@ dev_node(tty_device_t)
> #
> type usbtty_device_t, serial_device;
> dev_node(usbtty_device_t)
> +
> +type virtio_device_t, serial_device;
> +dev_node(virtio_device_t)
> +
--
Chris PeBenito
Tresys Technology, LLC
http://www.tresys.com | oss.tresys.com