INITGROUPS(S)       Linux Programmer's Manual       INITGROUPS(S)



NAME
       initgroups  -  initialize  the  supplementary group access
       list

SYNOPSIS
       #include <grp.h>
       #include <sys/types.h>

       int initgroups(const char *user, gid_t group);

DESCRIPTION
       The initgroups() function  initializes  the  group  access
       list  by  reading  the group database /etc/group and using
       all groups of which user  is  a  member.   The  additional
       group group is also added to the list.

RETURN VALUE
       The  initgroups()  function returns 0 on success, or -1 if
       an error occurs.

ERRORS
       EPERM  The calling process does not have sufficient privi-
              leges.

       ENOMEM Insufficient  memory  to allocate group information
              structure.

FILES
       /etc/group          group database file

CONFORMING TO
       SVID 3, BSD 4.3

NOTES
       The  prototype  for  initgroups  is  only   available   if
       _BSD_SOURCE  is defined (either explicitly, or implicitly,
       by not defining _POSIX_SOURCE or compiling with the  -ansi
       flag).

SEE ALSO
       getgroups(s), setgroups(s)



GNU                         1993-04-05              INITGROUPS(S)