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rump_syspuffs(8) [netbsd man page]

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

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

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

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
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