74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
#include "fs/tmpfs/FileSystem.h"
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#include <luna/Alloc.h>
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#include <luna/CString.h>
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#include <luna/Ignore.h>
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namespace TmpFS
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{
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Result<SharedPtr<VFS::FileSystem>> FileSystem::create()
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{
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SharedPtr<FileSystem> fs = TRY(adopt_shared(new (std::nothrow) FileSystem()));
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SharedPtr<VFS::Inode> root = TRY(fs->create_dir_inode({}));
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fs->set_root(root);
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return (SharedPtr<VFS::FileSystem>)fs;
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}
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Result<SharedPtr<VFS::Inode>> FileSystem::create_file_inode()
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{
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SharedPtr<FileInode> inode = TRY(make_shared<FileInode>());
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inode->set_fs(*this, {});
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inode->set_inode_number(m_next_inode_number, {});
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TRY(m_inodes.try_append(inode));
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m_next_inode_number++;
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return (SharedPtr<VFS::Inode>)inode;
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}
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Result<SharedPtr<VFS::Inode>> FileSystem::create_dir_inode(SharedPtr<VFS::Inode> parent)
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{
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SharedPtr<DirInode> inode = TRY(make_shared<DirInode>());
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TRY(inode->add_entry(inode, "."));
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TRY(inode->add_entry(parent ? parent : (SharedPtr<VFS::Inode>)inode, ".."));
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inode->set_fs(*this, {});
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inode->set_inode_number(m_next_inode_number, {});
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TRY(m_inodes.try_append(inode));
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m_next_inode_number++;
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return (SharedPtr<VFS::Inode>)inode;
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}
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void FileSystem::set_root(SharedPtr<VFS::Inode> root)
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{
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m_root_inode = root;
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}
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Result<SharedPtr<VFS::Inode>> DirInode::find(const char* name) const
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{
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for (const auto& entry : m_entries)
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{
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if (!strcmp(name, entry.name)) return entry.inode;
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}
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return err(ENOENT);
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}
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Result<void> DirInode::add_entry(SharedPtr<VFS::Inode> inode, const char* name)
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{
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Entry entry;
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entry.inode = inode;
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strlcpy(entry.name, name, sizeof(entry.name));
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TRY(m_entries.try_append(move(entry)));
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return {};
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}
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Result<SharedPtr<VFS::Inode>> DirInode::create_file(const char* name)
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{
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auto inode = TRY(m_fs->create_file_inode());
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TRY(add_entry(inode, name));
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return inode;
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}
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}
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