SETGROUPS(2)                BSD Programmer's Manual               SETGROUPS(2)

NAME
     setgroups - set group access list

SYNOPSIS
     #include <unistd.h>
     #include <sys/param.h>

     int
     setgroups(int ngroups, const int *gidset)

DESCRIPTION
     Setgroups() sets the group access list of the current user process ac-
     cording to the array gidset. The parameter ngroups indicates the number
     of entries in the array and must be no more than NGROUPS, as defined in
     <sys/param.h>.

     Only the super-user may set new groups.

RETURN VALUES
     A 0 value is returned on success, -1 on error, with an error code stored
     in errno.

ERRORS
     The setgroups() call will fail if:

     [EPERM]       The caller is not the super-user.

     [EFAULT]      The address specified for gidset is outside the process ad-
                   dress space.

SEE ALSO
     getgroups(2),  initgroups(3)

BUGS
     The gidset array should be of type gidt, but remains integer for compat-
     ibility with earlier systems.

HISTORY
     The setgroups function call appeared in 4.2BSD.

4.2 Berkeley Distribution       March 26, 1993                               1