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Add some basic setgroups(), getgroups() and initgroups().

Browse source 
Also teach /bin/id to print the user's supplemental groups.
This commit is contained in:
Andreas Kling 2018-11-07 01:38:51 +01:00
parent d3bd3791cb
commit a7f1d892a9
12 changed files with 167 additions and 19 deletions
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33
AK/DoublyLinkedList.h
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@ -8,6 +8,7 @@ template<typename T>
class DoublyLinkedList {
private:
struct Node {
explicit Node(const T& v) : value(v) { }
explicit Node(T&& v) : value(move(v)) { }
T value;
Node* next { nullptr };
@ -38,17 +39,13 @@ public:
void append(T&& value)
{
auto* node = new Node(move(value));
if (!m_head) {
ASSERT(!m_tail);
m_head = node;
m_tail = node;
return;
}
ASSERT(m_tail);
m_tail->next = node;
node->prev = m_tail;
m_tail = node;
append_node(new Node(move(value)));
}
void append(const T& value)
{
append_node(new Node(value));
}
bool containsSlow(const T& value) const
@ -136,6 +133,20 @@ public:
private:
friend class Iterator;
void append_node(Node* node)
{
if (!m_head) {
ASSERT(!m_tail);
m_head = node;
m_tail = node;
return;
}
ASSERT(m_tail);
m_tail->next = node;
node->prev = m_tail;
m_tail = node;
}
Node* head() { return m_head; }
const Node* head() const { return m_head; }