mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
0c60e4d9dd
Fix guestfish (and other C tools) so that they ignore errors
when /etc/fstab contains bogus entries.
Update the documentation for inspect-get-mountpoints to emphasize
that callers must be aware of this when mounting the returned
values.
Add a regression test.
Update the example code ("inspect_vm") to reflect the way this
API ought to be called.
For more detail see:
https://bugzilla.redhat.com/show_bug.cgi?id=668574
61 lines
1.7 KiB
Python
61 lines
1.7 KiB
Python
# Example showing how to inspect a virtual machine disk.
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import sys
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import guestfs
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assert (len (sys.argv) == 2)
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disk = sys.argv[1]
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g = guestfs.GuestFS ()
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# Attach the disk image read-only to libguestfs.
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g.add_drive_opts (disk, readonly=1)
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# Run the libguestfs back-end.
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g.launch ()
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# Ask libguestfs to inspect for operating systems.
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roots = g.inspect_os ()
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if len (roots) == 0:
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raise (Error ("inspect_vm: no operating systems found"))
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for root in roots:
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print "Root device: %s" % root
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# Print basic information about the operating system.
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print " Product name: %s" % (g.inspect_get_product_name (root))
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print " Version: %d.%d" % \
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(g.inspect_get_major_version (root),
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g.inspect_get_minor_version (root))
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print " Type: %s" % (g.inspect_get_type (root))
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print " Distro: %s" % (g.inspect_get_distro (root))
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# Mount up the disks, like guestfish -i.
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#
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# Sort keys by length, shortest first, so that we end up
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# mounting the filesystems in the correct order.
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mps = g.inspect_get_mountpoints (root)
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def compare (a, b):
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if len(a[0]) > len(b[0]):
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return 1
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elif len(a[0]) == len(b[0]):
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return 0
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else:
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return -1
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mps.sort (compare)
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for mp_dev in mps:
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try:
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g.mount_ro (mp_dev[1], mp_dev[0])
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except RuntimeError as msg:
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print "%s (ignored)" % msg
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# If /etc/issue.net file exists, print up to 3 lines.
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filename = "/etc/issue.net"
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if g.is_file (filename):
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print "--- %s ---" % filename
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lines = g.head_n (3, filename)
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for line in lines: print line
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# Unmount everything.
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g.umount_all ()
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