Official Samba-3 HOWTO and Reference Guide, The

Chapter 36. Portability

Samba works on a wide range of platforms but the interface all the platforms provide is not always compatible. This chapter contains platform-specific information about compiling and using Samba.

HPUX

HP’s implementation of supplementary groups is non-standard (for historical reasons). There are two group files, /etc/group and /etc/logingroup; the system maps UIDs to numbers using the former, but initgroups() reads the latter. Most system admins who know the ropes symlink /etc/group to /etc/logingroup (hard link does not work for reasons too obtuse to go into here). initgroups() will complain if one of the groups you’re in in /etc/logingroup has what it considers to be an invalid ID, which means outside the range [0..UID_MAX] ...