AdvancedFileStructs

keos_project5::advanced_file_structs

Trait AdvancedFileStructs 

Source 
pub trait AdvancedFileStructs {
    // Required methods
    fn create(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>;
    fn mkdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>;
    fn unlink(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>;
    fn chdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>;
    fn readdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>;
    fn stat(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>;
    fn fsync(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>;
}
Expand description

A trait for extending file operation functionality.

This trait provides implementations for file system-related system calls that operate on files and directories. Each method corresponds to a specific system call, handling user-space arguments via SyscallAbi and returning either success or a KernelError on failure.

Required Methods§

Source

fn create(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Creates a new empty file in the current directory.

§Syscall API
int create(const char *pathname);
  • pathname: Path of the new file to create.

Returns 0 on success.

Source

fn mkdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Creates a new directory in the current working directory.

§Syscall API
int mkdir(const char *pathname);
  • pathname: Path of the new directory to create.

Returns 0 on success.

Removes a file from the file system.

§Syscall API
int unlink(const char *pathname);
  • pathname: Path of the file to remove.

Returns 0 on success.

Source

fn chdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Changes the current working directory.

§Syscall API
int chdir(const char *pathname);
  • pathname: Path of the directory to change to.

Returns 0 on success.

Source

fn readdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Reads directory entries from the current directory.

§Syscall API
ssize_t readdir(int fd, struct dentry *buf, size_t count);
  • fd: File descriptor of the directory to read from.
  • buf: a pointer to the array of the dentries.
  • count: the number of entries in the array.

Returns the number of entries read into the buffer.

Source

fn stat(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Retrieves file metadata.

§Syscall API
int stat(const char *pathname, struct stat *buf);
  • pathname: Path of the file or directory.
  • buf: Buffer to store the metadata.

Returns 0 on success.

Source

fn fsync(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Synchronizes in-memory file contents to disk.

§Syscall API
int fsync(int fd);
  • fd: File descriptor of the file to synchronize.

Returns 0 on success.

Implementations on Foreign Types§

Source§

impl AdvancedFileStructs for FileStruct

Source§

fn create(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Creates a new empty file in the current directory.

§Syscall API
int create(const char *pathname);
  • pathname: Path of the new file to create.

Returns 0 on success.

Source§

fn mkdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Creates a new directory in the current working directory.

§Syscall API
int mkdir(const char *pathname);
  • pathname: Path of the new directory to create.

Returns 0 on success.

Removes a file from the file system.

§Syscall API
int unlink(const char *pathname);
  • pathname: Path of the file to remove.

Returns 0 on success.

Source§

fn chdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Changes the current working directory.

§Syscall API
int chdir(const char *pathname);
  • pathname: Path of the directory to change to.

Returns 0 on success.

Source§

fn readdir(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Reads directory entries from the current directory.

§Syscall API
ssize_t readdir(int fd, struct dentry *buf, size_t count);
  • fd: File descriptor of the directory to read from.
  • buf: a pointer to the array of the dentries.
  • count: the number of entries in the array.

Returns the number of entries read into the buffer.

Source§

fn stat(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Retrieves file metadata.

§Syscall API
int stat(const char *pathname, struct stat *buf);
  • pathname: Path of the file or directory.
  • buf: Buffer to store the metadata.

Returns 0 on success.

Source§

fn fsync(&mut self, abi: &SyscallAbi<'_>) -> Result<usize, KernelError>

Synchronizes in-memory file contents to disk.

§Syscall API
int fsync(int fd);
  • fd: File descriptor of the file to synchronize.

Returns 0 on success.

Implementors§