rump_syspuffs(8) [netbsd man page]

RUMP_SYSPUFFS(8)					    BSD System Manager's Manual 					  RUMP_SYSPUFFS(8)

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.

BSD
								   June 9, 2009 							       BSD

P2K(3)							   BSD Library Functions Manual 						    P2K(3)

NAME

     p2k -- puffs to kernel vfs translation library

LIBRARY

     p2k Library (libp2k, -lp2k)

SYNOPSIS

     #include <rump/p2k.h>

     struct p2k_mount *
     p2k_init(uint32_t puffs_flags);

     void
     p2k_cancel(struct p2k_mount *p2m, int error);

     int
     p2k_setup_fs(struct p2k_mount *p2m, const char *vfsname, const char *devpath, const char *mountpath, int mntflags, void *arg, size_t alen);

     p2k_setup_diskfs(struct p2k_mount *p2m, const char *vfsname, const char *devpath, int partition, const char *mountpath, int mntflags,
	 void *arg, size_t alen);

     int
     p2k_mainloop(struct p2k_mount *p2m);

     int
     p2k_run_fs(const char *vfsname, const char *devpath, const char *mountpath, int mntflags, void *arg, size_t alen, uint32_t puffs_flags);

     int
     p2k_run_diskfs(const char *vfsname, const char *devpath, int partition, const char *mountpath, int mntflags, void *arg, size_t alen,
	 uint32_t puffs_flags);

DESCRIPTION

     The p2k library translates the puffs protocol to the kernel vfs(9) protocol and back again.  It can therefore be used to mount and run kernel
     file system code as a userspace daemon.

     Calling the library interface function mounts the file system and, if succesful, starts handling requests.  The parameters are handled by
     ukfs_mount() (see ukfs(3)), with the exception that mountpath and puffs_flags are handled by puffs(3).  The "run_fs" variants of the inter-
     faces are provided as a convenience for the common case.  They execute all of init, setup and mainloop in one call.

ENVIRONMENT

     The following environment variables affect the behaviour of p2k.  They are useful mostly for debugging purposes.  The flags are environment
     variables because typically the command line arguments to p2k utilities are parsed using versions not aware of p2k options; for example, the
     rump_cd9660(8) arguments are really parsed by mount_cd9660(8).

       P2K_DEBUG	  Do not detach from tty and print information about each puffs operation.  In case the daemon receives SIGINFO (typically
			  from ctrl-T), it dumps out the status of the mount point.  Sending SIGUSR1 causes a dump of all the vnodes (verbose).

       P2K_NODETACH	  Do not detach from tty.

       P2K_NOCACHE_PAGE   Do not use the puffs page cache.

       P2K_NOCACHE_NAME   Do not use the puffs name cache.

       P2K_NOCACHE	  Do not use the puffs page or name cache.

       P2K_WIZARDUID	  If set, use the value of the variable to determine the UID of the caller of each operation instead of the actual caller
			  supplied by puffs(3).  This can be used for example to simplify modifying an OS installation's root image as a non-root
			  user.

SEE ALSO

     puffs(3), rump(3), ukfs(3), rump_cd9660(8), rump_efs(8), rump_ext2fs(8), rump_ffs(8), rump_hfs(8), rump_lfs(8), rump_msdos(8), rump_nfs(8),
     rump_ntfs(8), rump_smbfs(8), rump_syspuffs(8), rump_sysvbfs(8), rump_tmpfs(8), rump_udf(8)

BSD
								  January 7, 2011							       BSD