fatfs::FatFsFileSystem::FatFsInodeOps Class Reference

FatFS inode 操作实现 More...

#include <fatfs.hpp>

Inheritance diagram for fatfs::FatFsFileSystem::FatFsInodeOps:

Collaboration diagram for fatfs::FatFsFileSystem::FatFsInodeOps:

Public Member Functions
	FatFsInodeOps (FatFsFileSystem *fs)
auto	Lookup (vfs::Inode *dir, const char *name) -> Expected< vfs::Inode * > override
	在目录中查找指定名称的 inode
auto	Create (vfs::Inode *dir, const char *name, vfs::FileType type) -> Expected< vfs::Inode * > override
	在目录中创建文件或子目录
auto	Unlink (vfs::Inode *dir, const char *name) -> Expected< void > override
	删除目录中的文件条目
auto	Mkdir (vfs::Inode *dir, const char *name) -> Expected< vfs::Inode * > override
	在目录中创建子目录
auto	Rmdir (vfs::Inode *dir, const char *name) -> Expected< void > override
	删除目录中的空子目录
Public Member Functions inherited from vfs::InodeOps
	InodeOps ()=default
	InodeOps (const InodeOps &)=delete
	InodeOps (InodeOps &&)=delete
auto	operator= (const InodeOps &) -> InodeOps &=delete
auto	operator= (InodeOps &&) -> InodeOps &=delete
virtual	~InodeOps ()=default

Private Attributes
FatFsFileSystem *	fs_

Detailed Description

FatFS inode 操作实现

Definition at line 130 of file fatfs.hpp.

Constructor & Destructor Documentation

FatFsInodeOps()

fatfs::FatFsFileSystem::FatFsInodeOps::FatFsInodeOps ( FatFsFileSystem *  fs )

inlineexplicit

Definition at line 132 of file fatfs.hpp.

: fs_(fs) {}

Member Function Documentation

Create()

auto fatfs::FatFsFileSystem::FatFsInodeOps::Create ( vfs::Inode *  dir, const char *  name, vfs::FileType  type  ) -> Expected<vfs::Inode*>

overridevirtual

在目录中创建文件或子目录

Parameters

dir	父目录 inode
name	新条目名称
type	文件类型（kRegular 或 kDirectory）

Returns

Expected<vfs::Inode*> 新 inode 或错误

Implements vfs::InodeOps.

Definition at line 334 of file fatfs.cpp.

                           {
  auto* dir_fi = static_cast<FatInode*>(dir->fs_private);
  std::array<char, kPathBufSize> full_path{};
  strncpy(full_path.data(), dir_fi->path.data(), full_path.size() - 1);
  size_t dir_len = strlen(full_path.data());
  strncpy(full_path.data() + dir_len, name, full_path.size() - dir_len - 1);
  full_path[full_path.size() - 1] = '\0';
 
  if (type == vfs::FileType::kDirectory) {
    FRESULT fr = f_mkdir(full_path.data());
    if (fr != FR_OK) {
      return std::unexpected(Error{FresultToErrorCode(fr)});
    }
  } else {
    FIL fil;
    FRESULT fr = f_open(&fil, full_path.data(), FA_CREATE_NEW | FA_WRITE);
    if (fr != FR_OK) {
      return std::unexpected(Error{FresultToErrorCode(fr)});
    }
    (void)f_close(&fil);
  }
 
  auto inode_result = fs_->AllocateInode();
  if (!inode_result) {
    return std::unexpected(inode_result.error());
  }
  vfs::Inode* inode = *inode_result;
  auto* new_fi = static_cast<FatInode*>(inode->fs_private);
  inode->ino = 0;
  inode->type = type;
  inode->size = 0;
  inode->permissions = kDefaultFilePermissions;
  inode->link_count = 1;
  strncpy(new_fi->path.data(), full_path.data(), new_fi->path.size() - 1);
  new_fi->path[new_fi->path.size() - 1] = '\0';
  return inode;
}

Lookup()

auto fatfs::FatFsFileSystem::FatFsInodeOps::Lookup ( vfs::Inode *  dir, const char *  name  ) -> Expected<vfs::Inode*>

overridevirtual

在目录中查找指定名称的 inode

Parameters

dir	目录 inode
name	文件或子目录名称

Returns

Expected<vfs::Inode*> 找到的 inode 或错误

Implements vfs::InodeOps.

Definition at line 301 of file fatfs.cpp.

                           {
  auto* dir_fi = static_cast<FatInode*>(dir->fs_private);
 
  // 拼接完整路径：dir_path + name
  std::array<char, kPathBufSize> full_path{};
  strncpy(full_path.data(), dir_fi->path.data(), full_path.size() - 1);
  size_t dir_len = strlen(full_path.data());
  strncpy(full_path.data() + dir_len, name, full_path.size() - dir_len - 1);
  full_path[full_path.size() - 1] = '\0';
 
  FILINFO fi_info;
  FRESULT fr = f_stat(full_path.data(), &fi_info);
  if (fr != FR_OK) {
    return std::unexpected(Error{FresultToErrorCode(fr)});
  }
 
  auto inode_result = fs_->AllocateInode();
  if (!inode_result) {
    return std::unexpected(inode_result.error());
  }
  vfs::Inode* inode = *inode_result;
  auto* new_fi = static_cast<FatInode*>(inode->fs_private);
  inode->ino = 0;
  inode->type = FilInfoToFileType(fi_info);
  inode->size = fi_info.fsize;
  inode->permissions = kDefaultFilePermissions;
  inode->link_count = 1;
  strncpy(new_fi->path.data(), full_path.data(), new_fi->path.size() - 1);
  new_fi->path[new_fi->path.size() - 1] = '\0';
  return inode;
}

Mkdir()

auto fatfs::FatFsFileSystem::FatFsInodeOps::Mkdir ( vfs::Inode *  dir, const char *  name  ) -> Expected<vfs::Inode*>

overridevirtual

在目录中创建子目录

Parameters

dir	父目录 inode
name	子目录名称

Returns

Expected<vfs::Inode*> 新目录 inode 或错误

Implements vfs::InodeOps.

Definition at line 385 of file fatfs.cpp.

                           {
  return Create(dir, name, vfs::FileType::kDirectory);
}

Rmdir()

auto fatfs::FatFsFileSystem::FatFsInodeOps::Rmdir ( vfs::Inode *  dir, const char *  name  ) -> Expected<void>

overridevirtual

删除目录中的空子目录

Parameters

dir	父目录 inode
name	子目录名称

Returns

Expected<void> 成功或错误

Implements vfs::InodeOps.

Definition at line 390 of file fatfs.cpp.

                      {
  // f_unlink 同时处理文件和空目录
  return Unlink(dir, name);
}

Unlink()

auto fatfs::FatFsFileSystem::FatFsInodeOps::Unlink ( vfs::Inode *  dir, const char *  name  ) -> Expected<void>

overridevirtual

删除目录中的文件条目

Parameters

dir	父目录 inode
name	文件名称

Returns

Expected<void> 成功或错误

Implements vfs::InodeOps.

Definition at line 374 of file fatfs.cpp.

                      {
  auto* dir_fi = static_cast<FatInode*>(dir->fs_private);
  std::array<char, kPathBufSize> full_path{};
  strncpy(full_path.data(), dir_fi->path.data(), full_path.size() - 1);
  size_t dir_len = strlen(full_path.data());
  strncpy(full_path.data() + dir_len, name, full_path.size() - dir_len - 1);
  full_path[full_path.size() - 1] = '\0';
  return FresultToExpected(f_unlink(full_path.data()));
}

Member Data Documentation

fs_

FatFsFileSystem* fatfs::FatFsFileSystem::FatFsInodeOps::fs_

private

Definition at line 179 of file fatfs.hpp.

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The documentation for this class was generated from the following files:

• /workspaces/SimpleKernel/src/filesystem/fatfs/include/fatfs.hpp
• /workspaces/SimpleKernel/src/filesystem/fatfs/fatfs.cpp