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# Example showing how to inspect a virtual machine disk.
import sys
import guestfs
if len(sys.argv) < 2:
print("inspect_vm: missing disk image to inspect", file=sys.stderr)
sys.exit(1)
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:
print("inspect_vm: no operating systems found", file=sys.stderr)
sys.exit(1)
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)
for device, mp in sorted(mps.items(), key=lambda k: len(k[0])):
try:
g.mount_ro(mp, 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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