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

NAME
     setgroups - set group access list

SYNOPSIS
     #include <&lt;sys/param.h>&gt;
     #include <&lt;unistd.h>&gt;

     int
     setgroups(int ngroups, const gid_t *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)

HISTORY
     The setgroups function call appeared in 4.2BSD.

4.2 Berkeley Distribution       April 16, 1994                               1