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34 .Nd mount the udf file system using a userspace server
36 .Cd "file-system PUFFS"
37 .Cd "pseudo-device putter"
46 utility can be used to mount udf file systems.
51 to facilitate running the file system as a server in userspace.
55 does not use file system code within the kernel and therefore does
56 not require kernel support except
58 Apart from a minor speed penalty (starting from 10% and depending
59 on the workload and file system in question), there is no difference
60 to using in-kernel code.
62 In case mounting a file system image from a regular file,
64 does not require the use of
66 unlike kernel file systems.
67 Instead, the image path can be directly passed as the special file path.
68 The exception is if the image contains a disklabel.
69 In this case vnconfig is required to resolve the start offset for the
70 correct partition within the image.
72 It is recommended that untrusted file system images be mounted with
76 Corrupt file system images commonly cause the file system
77 to crash the entire kernel, but with
79 only the userspace server process will dump core.
96 is added to the options field of
101 for a full description of the available command line options.
110 utility first appeared in
112 It is currently considered experimental.