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#include <AK/StringBuilder.h>
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/Net/LocalSocket.h>
#include <Kernel/VM/VMObject.h>
HashTable<Inode*>& all_inodes()
{
static HashTable<Inode*>* s_inode_set;
if (!s_inode_set)
s_inode_set = new HashTable<Inode*>();
return *s_inode_set;
}
void Inode::sync()
{
Vector<Retained<Inode>, 32> inodes;
{
InterruptDisabler disabler;
for (auto* inode : all_inodes()) {
if (inode->is_metadata_dirty())
inodes.append(*inode);
}
}
for (auto& inode : inodes) {
ASSERT(inode->is_metadata_dirty());
inode->flush_metadata();
}
}
ByteBuffer Inode::read_entire(FileDescription* descriptor) const
{
size_t initial_size = metadata().size ? metadata().size : 4096;
StringBuilder builder(initial_size);
ssize_t nread;
byte buffer[4096];
off_t offset = 0;
for (;;) {
nread = read_bytes(offset, sizeof(buffer), buffer, descriptor);
ASSERT(nread <= (ssize_t)sizeof(buffer));
if (nread <= 0)
break;
builder.append((const char*)buffer, nread);
offset += nread;
}
if (nread < 0) {
kprintf("Inode::read_entire: ERROR: %d\n", nread);
return nullptr;
}
return builder.to_byte_buffer();
}
unsigned Inode::fsid() const
{
return m_fs.fsid();
}
Inode::Inode(FS& fs, unsigned index)
: m_fs(fs)
, m_index(index)
{
all_inodes().set(this);
}
Inode::~Inode()
{
all_inodes().remove(this);
}
void Inode::will_be_destroyed()
{
if (m_metadata_dirty)
flush_metadata();
}
void Inode::inode_contents_changed(off_t offset, ssize_t size, const byte* data)
{
if (m_vmo)
m_vmo->inode_contents_changed({}, offset, size, data);
}
void Inode::inode_size_changed(size_t old_size, size_t new_size)
{
if (m_vmo)
m_vmo->inode_size_changed({}, old_size, new_size);
}
int Inode::set_atime(time_t)
{
return -ENOTIMPL;
}
int Inode::set_ctime(time_t)
{
return -ENOTIMPL;
}
int Inode::set_mtime(time_t)
{
return -ENOTIMPL;
}
int Inode::increment_link_count()
{
return -ENOTIMPL;
}
int Inode::decrement_link_count()
{
return -ENOTIMPL;
}
void Inode::set_vmo(VMObject& vmo)
{
m_vmo = vmo.make_weak_ptr();
}
bool Inode::bind_socket(LocalSocket& socket)
{
ASSERT(!m_socket);
m_socket = socket;
return true;
}
bool Inode::unbind_socket()
{
ASSERT(m_socket);
m_socket = nullptr;
return true;
}
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