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#include <Kernel/FileSystem/InodeFile.h>
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/FileSystem/FileDescriptor.h>
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/Process.h>
InodeFile::InodeFile(Retained<Inode>&& inode)
: m_inode(move(inode))
{
}
InodeFile::~InodeFile()
{
}
ssize_t InodeFile::read(FileDescriptor& descriptor, byte* buffer, ssize_t count)
{
return m_inode->read_bytes(descriptor.offset(), count, buffer, &descriptor);
}
ssize_t InodeFile::write(FileDescriptor& descriptor, const byte* data, ssize_t count)
{
return m_inode->write_bytes(descriptor.offset(), count, data, &descriptor);
}
KResultOr<Region*> InodeFile::mmap(Process& process, FileDescriptor& descriptor, LinearAddress preferred_laddr, size_t offset, size_t size, int prot)
{
ASSERT(offset == 0);
// FIXME: If PROT_EXEC, check that the underlying file system isn't mounted noexec.
InterruptDisabler disabler;
auto* region = process.allocate_file_backed_region(preferred_laddr, size, inode(), descriptor.absolute_path(), prot);
if (!region)
return KResult(-ENOMEM);
return region;
}
String InodeFile::absolute_path(const FileDescriptor& descriptor) const
{
ASSERT_NOT_REACHED();
ASSERT(descriptor.custody());
return descriptor.absolute_path();
}
KResult InodeFile::truncate(off_t size)
{
return m_inode->truncate(size);
}
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