NAME
rump_syspuffs
- mount a puffs file server with a userspace puffs loop
SYNOPSIS
file-system PUFFS
rump_syspuffs
file_server
arguments
DESCRIPTION
The
rump_syspuffs
utility can be used to mount any
puffs(3)
file server so that the requests are passed through the kernel
puffs code in userspace as well.
Therefore the approximate callgraph looks a little like the following,
where k and u denote code running in the kernel space and userspace,
respectively:
puffs vfs (k) -> libpuffs (u) -> p2k (u) -> puffs vfs (u) ->
libpuffs (u) -> file server (u).
The response path is the same, but in reverse.
In its current state,
rump_syspuffs
is most useful as a proof of concept for file system distribution
and for developing and debugging the kernel portion of puffs.
EXAMPLES
Mount a file system with sshfs:
rump_syspuffs
mount_psshfs
server.address
/mnt
Mount an ntfs file system using ntfs-3g (from pkgsrc/filesystems/fuse-ntfs-3g),
set the default uid to 1323:
rump_syspuffs
ntfs-3g
-o
uid=1323
/path/to/filesystem
/mnt
SEE ALSO
p2k(3),
puffs(3),
rump(3)
puffs(4)
HISTORY
The
rump_syspuffs
debugging utility first appeared in
NetBSD5.0.