5e1c7cb32c
It's generated when the mapping is first created, so it won't update if the file moves. Maybe that's something we should support, too.
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
#include <Kernel/FileSystem/InodeFile.h>
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#include <Kernel/FileSystem/Inode.h>
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#include <Kernel/FileSystem/FileDescriptor.h>
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#include <Kernel/FileSystem/VirtualFileSystem.h>
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#include <Kernel/Process.h>
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InodeFile::InodeFile(Retained<Inode>&& inode)
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: m_inode(move(inode))
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{
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}
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InodeFile::~InodeFile()
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{
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}
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ssize_t InodeFile::read(FileDescriptor& descriptor, byte* buffer, ssize_t count)
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{
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return m_inode->read_bytes(descriptor.offset(), count, buffer, &descriptor);
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}
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ssize_t InodeFile::write(FileDescriptor& descriptor, const byte* data, ssize_t count)
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{
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return m_inode->write_bytes(descriptor.offset(), count, data, &descriptor);
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}
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KResultOr<Region*> InodeFile::mmap(Process& process, FileDescriptor& descriptor, LinearAddress preferred_laddr, size_t offset, size_t size, int prot)
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{
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ASSERT(offset == 0);
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// FIXME: If PROT_EXEC, check that the underlying file system isn't mounted noexec.
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InterruptDisabler disabler;
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auto* region = process.allocate_file_backed_region(preferred_laddr, size, inode(), descriptor.absolute_path(), prot);
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if (!region)
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return KResult(-ENOMEM);
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return region;
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}
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String InodeFile::absolute_path(const FileDescriptor& descriptor) const
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{
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ASSERT_NOT_REACHED();
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ASSERT(descriptor.custody());
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return descriptor.absolute_path();
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}
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KResult InodeFile::truncate(off_t size)
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{
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return m_inode->truncate(size);
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}
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