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# Example showing how to inspect a virtual machine disk.
import sys
import guestfs
assert(len(sys.argv) == 2)
disk = sys.argv[1]
# All new Python code should pass python_return_dict=True
# to the constructor. It indicates that your program wants
# to receive Python dicts for methods in the API that return
# hashtables.
g = guestfs.GuestFS(python_return_dict=True)
# Attach the disk image read-only to libguestfs.
g.add_drive_opts(disk, readonly=1)
# Run the libguestfs back-end.
g.launch()
# Ask libguestfs to inspect for operating systems.
roots = g.inspect_os()
if len(roots) == 0:
raise(Error("inspect_vm: no operating systems found"))
for root in roots:
print "Root device: %s" % root
# Print basic information about the operating system.
print " Product name: %s" % (g.inspect_get_product_name(root))
print " Version: %d.%d" % \
(g.inspect_get_major_version(root),
g.inspect_get_minor_version(root))
print " Type: %s" % (g.inspect_get_type(root))
print " Distro: %s" % (g.inspect_get_distro(root))
# Mount up the disks, like guestfish -i.
#
# Sort keys by length, shortest first, so that we end up
# mounting the filesystems in the correct order.
mps = g.inspect_get_mountpoints(root)
def compare(a, b):
return len(a) - len(b)
for device in sorted(mps.keys(), compare):
try:
g.mount_ro(mps[device], device)
except RuntimeError as msg:
print "%s (ignored)" % msg
# If /etc/issue.net file exists, print up to 3 lines.
filename = "/etc/issue.net"
if g.is_file(filename):
print "--- %s ---" % filename
lines = g.head_n(3, filename)
for line in lines:
print line
# Unmount everything.
g.umount_all()
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