def _find_and_mount_iso(self, device, device_mount_dir, iso_path,
iso_mount_dir):
"""Find and mount installation source from ISO on device.
Return changed path to the iso to save looking for iso in the future call.
"""
self._setup_device(device, mountpoint=device_mount_dir)
# check for ISO images in the newly mounted dir
path = device_mount_dir
if iso_path:
path = os.path.normpath("%s/%s" % (path, iso_path))
# XXX it would be nice to streamline this when we're just setting
# things back up after storage activation instead of having to
# pretend we don't already know which ISO image we're going to
# use
image = findFirstIsoImage(path)
if not image:
payload_utils.teardown_device(device)
raise PayloadSetupError("failed to find valid iso image")
if path.endswith(".iso"):
path = os.path.dirname(path)
# this could already be set up the first time through
if not os.path.ismount(iso_mount_dir):
# mount the ISO on a loop
image = os.path.normpath("%s/%s" % (path, image))
mountImage(image, iso_mount_dir)
if not iso_path.endswith(".iso"):
result_path = os.path.normpath("%s/%s" %
(iso_path, os.path.basename(image)))
while result_path.startswith("/"):
# ridiculous
result_path = result_path[1:]
return result_path
return iso_path
def _setup_nfs_device(self, method, iso_device_path, repo_device_path):
# There are several possible scenarios here:
# 1. dracut could have mounted both the nfs repo and an iso and used
# the stage2 from inside the iso to boot from.
# iso_device_path and repo_device_path will be set in this case.
# 2. dracut could have mounted the nfs repo and used a stage2 from
# the NFS mount w/o mounting the iso.
# iso_device_path will be None and repo_device_path will be the nfs: path
# 3. dracut did not mount the nfs (eg. stage2 came from elsewhere)
# iso_device_path and/or repo_device_path are None
# 4. The repo may not contain an iso, in that case use it as is
url = None
path = None
if iso_device_path and repo_device_path:
path = util.parseNfsUrl('nfs:%s' % iso_device_path)[2]
# See if the dir holding the iso is what we want
# and also if we have an iso mounted to /run/install/repo
if path and path in iso_device_path and DRACUT_ISODIR in repo_device_path:
# Everything should be setup
url = "file://" + DRACUT_REPODIR
else:
# see if the nfs dir is mounted
need_mount = True
if repo_device_path:
_options, host, path = util.parseNfsUrl('nfs:%s' %
repo_device_path)
if method.server and method.server == host and \
method.dir and method.dir == path:
need_mount = False
path = DRACUT_REPODIR
elif iso_device_path:
# iso_device_path with no repo_device_path can happen when options on an existing
# nfs mount have changed. It is already mounted, but on INSTALL_TREE
# which is the same as DRACUT_ISODIR, making it hard for _setup_NFS
# to detect that it is already mounted.
_options, host, path = util.parseNfsUrl('nfs:%s' %
iso_device_path)
if path and path in iso_device_path:
need_mount = False
path = DRACUT_ISODIR
if need_mount:
# Mount the NFS share on INSTALL_TREE. If it ends up
# being nfsiso we will move the mountpoint to ISO_DIR.
if method.dir.endswith(".iso"):
nfs_dir = os.path.dirname(method.dir)
else:
nfs_dir = method.dir
self._setup_NFS(INSTALL_TREE, method.server, nfs_dir,
method.opts)
path = INSTALL_TREE
# check for ISO images in the newly mounted dir
if method.dir.endswith(".iso"):
# if the given URL includes a specific ISO image file, use it
image_file = os.path.basename(method.dir)
path = os.path.normpath("%s/%s" % (path, image_file))
image = findFirstIsoImage(path)
# An image was found, mount it on INSTALL_TREE
if image:
if path.startswith(INSTALL_TREE):
# move the INSTALL_TREE mount to ISO_DIR so we can
# mount the contents of the iso there.
# work around inability to move shared filesystems
util.execWithRedirect("mount", ["--make-rprivate", "/"])
util.execWithRedirect("mount",
["--move", INSTALL_TREE, ISO_DIR])
# The iso is now under ISO_DIR
path = ISO_DIR
elif path.endswith(".iso"):
path = os.path.dirname(path)
# mount the ISO on a loop
image = os.path.normpath("%s/%s" % (path, image))
mountImage(image, INSTALL_TREE)
url = "file://" + INSTALL_TREE
elif os.path.isdir(path):
# Fall back to the mount path instead of a mounted iso
url = "file://" + path
else:
# Do not try to use iso as source if it is not valid source
raise PayloadSetupError("Not a valid ISO image!")
return url
