[libvirt] [sandbox PATCH 2/2] Add support for virt-sandbox-service to add additional mount points.
dwalsh at redhat.com
dwalsh at redhat.com
Fri May 10 18:29:25 UTC 2013
From: Dan Walsh <dwalsh at redhat.com>
Add similar support to virt-sandbox-service that is in virt-sandbox
to add guest-bind, host-bind and host-image mount points on the command
line. Openshift needs feature.
---
bin/virt-sandbox-service | 38 ++++++++++++++++++++--
bin/virt-sandbox-service-bash-completion.sh | 4 ++-
bin/virt-sandbox-service-create.pod | 49 ++++++++++++++++++++++++++---
3 files changed, 82 insertions(+), 9 deletions(-)
diff --git a/bin/virt-sandbox-service b/bin/virt-sandbox-service
index d7f43a5..0c656d7 100755
--- a/bin/virt-sandbox-service
+++ b/bin/virt-sandbox-service
@@ -76,6 +76,7 @@ class Container:
self.conn = None
self.image = None
self.uid = 0
+ self.mounts = []
def get_file_type(self):
return self.file_type
@@ -107,6 +108,15 @@ class Container:
def get_homedir(self):
return self.config.get_homedir()
+ def set_mounts(self, mounts):
+ self.mounts = mounts
+
+ def get_mounts(self):
+ return self.mounts
+
+ def add_mounts(self):
+ self.config.add_mount_strv(self.mounts)
+
def get_config_path(self, name = None):
if not name:
name = self.name
@@ -330,12 +340,10 @@ class GenericContainer(Container):
sys.stdout.write(_("Created sandbox container image %s\n") % self.image)
else:
sys.stdout.write(_("Created sandbox container dir %s\n") % self.dest)
+ self.add_mounts()
self.save_config()
def create(self):
- config_path = self.get_config_path()
- if os.path.exists(config_path):
- raise ValueError([_("%s already exists") % config_path ])
try:
self.create_generic()
except Exception, e:
@@ -764,6 +772,7 @@ PrivateNetwork=false
self.set_security_label()
self.create_system_unit()
self.config.set_boot_target("multi-user.target")
+ self.add_mounts()
self.save_config()
def create(self):
@@ -832,6 +841,7 @@ def create(args):
container.set_gid(args.gid)
container.set_path(args.path)
container.set_file_type(args.file_type)
+ container.set_mounts(args.mounts)
if args.imagesize:
container.set_image(args.imagesize)
@@ -1007,6 +1017,25 @@ class CheckUnit(argparse.Action):
unitfiles = [ (value, src) ]
setattr(namespace, self.dest, unitfiles)
+valid_mounts = { "host-bind", "host-image", "guest-bind" }
+class AddMount(argparse.Action):
+ def __call__(self, parser, namespace, values, option_string=None):
+ mounts = getattr(namespace, self.dest)
+ mrec = values.split(":")
+ if mrec[0] not in valid_mounts:
+ raise ValueError([_("Invalid mount type '%s'. Valid types %s." % ( mrec[0], ",".join(valid_mounts)))])
+ try:
+ dest,src = mrec[1].split("=");
+ mdict = {"type":mrec[0], "src": src, "dest":dest }
+ except (IndexError, ValueError):
+ raise ValueError([_("Invalid mount '%s' specification.") % values ])
+
+ if mounts:
+ mounts.append(values)
+ else:
+ mounts = [values]
+ setattr(namespace, self.dest, mounts)
+
class SetNet(argparse.Action):
def __call__(self, parser, namespace, values, option_string=None):
nets = getattr(namespace, self.dest)
@@ -1056,6 +1085,9 @@ def gen_create_args(subparser):
parser.add_argument("-i", "--imagesize", dest="imagesize", default = None,
action=SizeAction,
help=_("create image of this many megabytes."))
+ parser.add_argument("-m", "--mount", dest="mounts",
+ action=AddMount, default=[],
+ help=_("Mount a filesytem in the sandbox"))
parser.add_argument("-N", "--network", dest="network",
action=SetNet, default=[],
help=_("Specify the network configuration"))
diff --git a/bin/virt-sandbox-service-bash-completion.sh b/bin/virt-sandbox-service-bash-completion.sh
index 8f2b6d0..a101f4a 100755
--- a/bin/virt-sandbox-service-bash-completion.sh
+++ b/bin/virt-sandbox-service-bash-completion.sh
@@ -57,7 +57,7 @@ _virt_sandbox_service () {
)
local -A OPTS=(
[ALL]='-h --help'
- [CREATE]='-C --copy -f --filetype -G --gid -i --imagesize --homedir -N --network -p --path -s --security -u --unitfile --username -U -uid'
+ [CREATE]='-C --copy -f --filetype -G --gid -i --imagesize --homedir -m --mount -N --network -p --path -s --security -u --unitfile --username -U -uid'
[LIST]='-r --running'
[RELOAD]='-u --unitfile'
[EXECUTE]='-N --noseclabel'
@@ -116,6 +116,8 @@ _virt_sandbox_service () {
return 0
elif test "$prev" = "-s" || test "$prev" = "--security" ; then
return 0
+ elif test "$prev" = "-m" || test "$prev" = "--mount" ; then
+ return 0
elif test "$prev" = "-n" || test "$prev" = "--network" ; then
return 0
elif test "$prev" = "-i" || test "$prev" = "--imagesize" ; then
diff --git a/bin/virt-sandbox-service-create.pod b/bin/virt-sandbox-service-create.pod
index 942c919..fb1cb62 100644
--- a/bin/virt-sandbox-service-create.pod
+++ b/bin/virt-sandbox-service-create.pod
@@ -5,11 +5,12 @@ virt-sandbox-service create - Create a Security container
=head1 SYNOPSIS
virt-sandbox-service [-c URI] create [-h] [-C] [-f FILE_TYPE]
- [--homedir HOMEDIR] [-G GID] [-i IMAGESIZE]
- [-N NETWORK] [-p PATH] [-s SECURITY]
- [-u UNITFILES] [--username USERNAME]
- [-U UID] [-P package]
- name [command [command ...]]
+ [--homedir HOMEDIR] [-G GID] [-i IMAGESIZE]
+ [[-m TYPE:DST=SRC ] ...]
+ [-N NETWORK] [-p PATH] [-s SECURITY]
+ [[-u UNITFILES] ...] [--username USERNAME]
+ [-U UID] [-P package]
+ name [command [command ...]]
=head1 DESCRIPTION
@@ -67,6 +68,44 @@ Set homedir path to use within container.
Default: C<UID's Homedir>.
+=item B<-m TYPE:DST=SRC>, B<--mount TYPE:DST=SRC>
+
+Sets up a mount inside the sandbox at B<DST> backed by B<SRC>. The meaning of B<SRC> depends on the value of "TYPE" specified:
+
+=over 4
+
+=item host-bind
+
+If B<TYPE> is B<host-bind>, then B<SRC> is interpreted as the path to a directory on the host filesystem. If "SRC" is the empty string, then a temporary (empty) directory is created on the host before starting the sandbox and deleted afterwards. The "--include" option is useful for populating these temporary directories with copies of host files.
+
+=back
+
+=over 4
+
+=item host-image
+
+If B<TYPE> is B<host-image>, then B<SRC> is interpreted as the path to a disk image file on the host filesystem. The image should be formatted with a filesystem that can be auto-detected by the sandbox, such as B<ext3, ext4>, etc. The disk image itself should be a raw file, not qcow2 or any other special format
+
+=back
+
+=over 4
+
+=item guest-bind
+
+If B<TYPE> is B<guest-bind>, then B<SRC> is interpreted as the path to another directory in the container filesystem.
+
+=back
+
+=over 4
+
+=item Some examples
+
+ -m host-bind:/tmp=/var/lib/sandbox/demo/tmp
+ -m host-image:/=/var/lib/sandbox/demo.img
+ -m guest-bind:/home=/tmp/home
+
+=back
+
=item B<-N NETWORK-OPTIONS>, B<--network NETWORK-OPTIONS>
Add a network interface to the sandbox. By default the sandbox will
--
1.8.2.1
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