Process.groups

Process.groups → array

static VALUE
proc_getgroups(VALUE obj)
{
    VALUE ary, tmp;
    int i, ngroups;
    rb_gid_t *groups;

    ngroups = getgroups(0, NULL);
    if (ngroups == -1)
        rb_sys_fail(0);

    groups = ALLOCV_N(rb_gid_t, tmp, ngroups);

    ngroups = getgroups(ngroups, groups);
    if (ngroups == -1)
        rb_sys_fail(0);

    ary = rb_ary_new();
    for (i = 0; i < ngroups; i++)
        rb_ary_push(ary, GIDT2NUM(groups[i]));

    ALLOCV_END(tmp);

    return ary;
}

Returns an array of the group IDs in the supplemental group access list for the current process:

Example

Process.groups # => [4, 24, 27, 30, 46, 122, 135, 136, 1000]

These properties of the returned array are system-dependent:

Whether (and how) the array is sorted.
Whether the array includes effective group IDs.
Whether the array includes duplicate group IDs.
Whether the array size exceeds the value of Process.maxgroups.

Use this call to get a sorted and unique array:

Example

Process.groups.uniq.sort

See also .groups= .gid= .gid .initgroups also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0

‹ prev.gid= next ›.groups=