NAME
rump_syspuffs —
mount a puffs file
server with a userspace puffs loop
SYNOPSIS
file-system PUFFS
pseudo-device putter
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
NetBSD 5.0.