nfs4mapid — shows
NFSv4 mappings from uids or gids to over the wire string names and string
names to uids or gids.
nfs4mapid |
[-G] string name |
In the first form, nfs4mapid shows
translations from NFSv4 string representations of users, and with the
-G option, groups, to the corresponding local uids
and gids. In the second form shows the translations from opendirectoy GUIDS
to NFSv4 strings. The well known strings names (which are distinguished by a
trailing ‘@’ ), such as "OWNER@" and
"GROUP@" are represented locally by GUIDs and may not map to uids
or gids. To map those GUIDS to NFSv4 strings use this form. The first form
can be used to map the well known ids to GUIDs.
nfs4mapid does this by looking at the trailing
‘@’ sign. Note that NFSv4 well known names are always groups
and are used in ACEs. In the third form, it shows the mapping from uids to
the NFSv4 user@domain form. Similarly, in the last form it shows the mapping
from gids to the NFSv4 group@domain. nfs4mapid will
also show the intermediate GUID translation if used. The NFSv4 domain name
should be set with dscl(1). See
opendirectory(8) for
instructions.
-G- Map an NFSv4 string to a gid.
-u- Map a uid to an NFSv4 user@domain string.
-g- Map a gid to an NFSv4 group@domain string.
nfs4mapid uses a privileged nfs client
system call to pass the translation request down to the kernel, so results
will be the same as a request coming from an NFSv4 server. Because of this,
nfs4mapid must be run with root privileges.
The nfs4mapid utility first appeared in
OSX 10.10