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

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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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29
AK/HashTable.h
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@ -48,6 +48,7 @@ public:
unsigned size() const { return m_size; }
unsigned capacity() const { return m_capacity; }
void set(const T&);
void set(T&&);
bool contains(const T&) const;
void clear();
@ -224,6 +225,7 @@ private:
Bucket& lookup(const T&, unsigned* bucketIndex = nullptr);
const Bucket& lookup(const T&, unsigned* bucketIndex = nullptr) const;
void rehash(unsigned capacity);
void insert(const T&);
void insert(T&&);
Bucket* m_buckets { nullptr };
@ -251,6 +253,26 @@ void HashTable<T, TraitsForT>::set(T&& value)
m_size++;
}
template<typename T, typename TraitsForT>
void HashTable<T, TraitsForT>::set(const T& value)
{
if (!m_capacity)
rehash(1);
auto& bucket = lookup(value);
for (auto& e : bucket.chain) {
if (e == value)
return;
}
if (size() >= capacity()) {
rehash(size() + 1);
insert(value);
} else {
bucket.chain.append(value);
}
m_size++;
}
template<typename T, typename TraitsForT>
void HashTable<T, TraitsForT>::rehash(unsigned newCapacity)
{
@ -291,6 +313,13 @@ void HashTable<T, TraitsForT>::insert(T&& value)
bucket.chain.append(move(value));
}
template<typename T, typename TraitsForT>
void HashTable<T, TraitsForT>::insert(const T& value)
{
auto& bucket = lookup(value);
bucket.chain.append(value);
}
template<typename T, typename TraitsForT>
bool HashTable<T, TraitsForT>::contains(const T& value) const
{