drinkingtea/nostalgia
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[ox/fs] Fix FileSystemTemplate::write to create Directory path index

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This commit is contained in:
Gary Talent 2018-09-01 16:28:36 -05:00
parent 0c6a557878
commit cbfd9566d1
2 changed files with 37 additions and 9 deletions
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2
deps/ox/src/ox/fs/filesystem2/directory.hpp vendored
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@ -94,6 +94,8 @@ class Directory {
FileStore *m_fs = nullptr;
public:
Directory() = default;
Directory(FileStore *fs, InodeId_t inode);
/**

44
deps/ox/src/ox/fs/filesystem2/filesystem.hpp vendored
View File

@ -15,6 +15,12 @@
namespace ox::fs {
/**
* FileSystemTemplate used to create file system that wraps around a FileStore,
* taking an inode size and a directory type as parameters.
*
* Note: Directory parameter must have a default constructor.
*/
template<typename InodeId_t, typename Directory>
class FileSystemTemplate {
private:
@ -73,12 +79,14 @@ class FileSystemTemplate {
bool valid() const;
private:
ValErr<FileSystemData> fileSystemData();
ValErr<FileSystemData> fileSystemData() const noexcept;
/**
* Finds the inode ID at the given path.
*/
ValErr<uint64_t> find(const char *path);
ValErr<uint64_t> find(const char *path) const noexcept;
ValErr<Directory> rootDir() const noexcept;
};
@ -186,13 +194,18 @@ void FileSystemTemplate<InodeId_t, Directory>::resize(uint64_t size, void *buffe
template<typename InodeId_t, typename Directory>
Error FileSystemTemplate<InodeId_t, Directory>::write(const char *path, void *buffer, uint64_t size, uint8_t fileType) {
auto inode = find(path);
oxReturnError(inode.error);
return write(inode, buffer, size, fileType);
if (inode.error) {
inode = m_fs->generateInodeId();
}
auto rootDir = this->rootDir();
oxReturnError(rootDir.error);
oxReturnError(rootDir.value.write(path, inode));
oxReturnError(write(inode, buffer, size, fileType));
return 0;
}
template<typename InodeId_t, typename Directory>
Error FileSystemTemplate<InodeId_t, Directory>::write(uint64_t inode, void *buffer, uint64_t size, uint8_t fileType) {
// TODO: directory insert
return m_fs->write(inode, buffer, size, fileType);
}
@ -242,7 +255,7 @@ Error FileSystemTemplate<InodeId_t, Directory>::walk(Error(*cb)(uint8_t, uint64_
}
template<typename InodeId_t, typename Directory>
ValErr<typename FileSystemTemplate<InodeId_t, Directory>::FileSystemData> FileSystemTemplate<InodeId_t, Directory>::fileSystemData() {
ValErr<typename FileSystemTemplate<InodeId_t, Directory>::FileSystemData> FileSystemTemplate<InodeId_t, Directory>::fileSystemData() const noexcept {
FileSystemData fd;
auto err = m_fs->read(InodeFsData, &fd, sizeof(fd));
if (err != 0) {
@ -252,15 +265,28 @@ ValErr<typename FileSystemTemplate<InodeId_t, Directory>::FileSystemData> FileSy
}
template<typename InodeId_t, typename Directory>
ValErr<uint64_t> FileSystemTemplate<InodeId_t, Directory>::find(const char *path) {
ValErr<uint64_t> FileSystemTemplate<InodeId_t, Directory>::find(const char *path) const noexcept {
auto fd = fileSystemData();
oxReturnError(fd.error);
if (fd.error) {
return {0, fd.error};
}
Directory rootDir(m_fs, fd.value.rootDirInode);
auto inode = rootDir.find(path);
oxReturnError(inode.error);
if (inode.error) {
return {0, inode.error};
}
return inode.value;
}
template<typename InodeId_t, typename Directory>
ValErr<Directory> FileSystemTemplate<InodeId_t, Directory>::rootDir() const noexcept {
auto fd = fileSystemData();
if (fd.error) {
return {{}, fd.error};
}
return Directory(m_fs, fd.value.rootDirInode);
}
extern template class Directory<uint16_t>;
extern template class Directory<uint32_t>;