idmap_rid(8)

NAME

       idmap_rid - Samba's idmap_rid Backend for Winbind

DESCRIPTION

       The idmap_rid backend provides a way to use an algorithmic mapping
       scheme to map UIDs/GIDs and SIDs. No database is required in this case
       as the mapping is deterministic.

IDMAP OPTIONS

       range = low - high
           Defines the available matching uid and gid range for which the
           backend is authoritative. Note that the range acts as a filter. If
           algorithmically determined UID or GID fall outside the range, they
           are ignored and the corresponding map is discarded. It is intended
           as a way to avoid accidental UID/GID overlaps between local and
           remotely defined IDs.

       base_rid = INTEGER
           Defines the base integer used to build SIDs out of an UID or a GID,
           and to rebase the UID or GID to be obtained from a SID. User RIDs
           by default start at 1000 (512 hexadecimal), this means a good value
           for base_rid can be 1000 as the resulting ID is calculated this
           way: ID = RID - BASE_RID + LOW RANGE ID.

EXAMPLES

       This example shows how to configure 2 domains with idmap_rid

                [global]
                    idmap domains = MAIN TRUSTED1

                    idmap config MAIN:backend      = rid
                    idmap config MAIN:base_rid     = 0
                    idmap config MAIN:range        = 10000 - 49999

                    idmap config TRUSTED1:backend  = rid
                    idmap config TRUSTED1:base_rid = 1000
                    idmap config TRUSTED1:range    = 50000 - 99999

AUTHOR

       The original Samba software and related utilities were created by
       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

Samba 3.0                         05/28/2008                      IDMAP_RID(8)