method

groups=

v1_9_2_180 - Show latest stable - Class: Process

groups=(p1)

public

Set the supplemental group access list to the given Array of group IDs.

Process.groups   #=> [0, 1, 2, 3, 4, 6, 10, 11, 20, 26, 27]
Process.groups = [27, 6, 10, 11]   #=> [27, 6, 10, 11]
Process.groups   #=> [27, 6, 10, 11]

static VALUE
proc_setgroups(VALUE obj, VALUE ary)
{
    size_t ngroups, i;
    rb_gid_t *groups;
    struct group *gr;

    Check_Type(ary, T_ARRAY);

    ngroups = RARRAY_LEN(ary);
    if (ngroups > (size_t)maxgroups)
        rb_raise(rb_eArgError, "too many groups, %u max", maxgroups);

    groups = ALLOCA_N(rb_gid_t, ngroups);

    for (i = 0; i < ngroups && i < (size_t)RARRAY_LEN(ary); i++) {
        VALUE g = RARRAY_PTR(ary)[i];

        if (FIXNUM_P(g)) {
            groups[i] = NUM2GIDT(g);
        }
        else {
            VALUE tmp = rb_check_string_type(g);

            if (NIL_P(tmp)) {
                groups[i] = NUM2GIDT(g);
            }
            else {
                gr = getgrnam(RSTRING_PTR(tmp));
                if (gr == NULL)
                    rb_raise(rb_eArgError,
                             "can't find group for %s", RSTRING_PTR(tmp));
                groups[i] = gr->gr_gid;
            }
        }
    }

    if (setgroups((int)ngroups, groups) == -1) /* ngroups <= maxgroups */
        rb_sys_fail(0);

    return proc_getgroups(obj);
}

groups=

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