e18175c556
* Move path_get outside of sys module * Add implementation of readlinkat * Clean up path_open; use OpenOptions as much as possible * Enable close_preopen test * Implement path_create_directory; fix path_open * Refactor path concatenation onto a descriptor * Implement path_remove_directory * Implement path_unlink_file * Rewrite path_open using specific access mask * Fix error mapping when unlinking file * Fix readlinkat to pass nofollow_errors testcase * Clean up winerror to WASI conversion * Spoof creating dangling symlinks on windows (hacky!) * Add positive testcase for readlink * Implement path_readlink (for nonzero buffers for now) * Clean up * Add Symlink struct immitating *nix symlink * Fix path_readlink * Augment interesting_paths testcase with trailing slashes example * Encapsulate path_get return value as PathGet struct * Remove dangling symlink emulation * Extract dangling symlinks into its own testcase This way, we can re-enable nofollow_errors testcase on Windows also. * Return __WASI_ENOTCAPABLE if user lacks perms to symlink
124 lines
3.5 KiB
Rust
124 lines
3.5 KiB
Rust
#![allow(non_camel_case_types)]
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use winapi::shared::winerror;
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use winapi::um::errhandlingapi::GetLastError;
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macro_rules! win_error_expand {
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{
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$(
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#[doc=$doc:literal]
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$error:ident,
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)*
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} => {
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/// Wraps WINAPI error code as enum.
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#[derive(Debug, Clone, Copy, Eq, PartialEq)]
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#[repr(u32)]
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pub enum WinError {
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/// Unknown error occurred.
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UnknownError = std::u32::MAX,
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$(
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#[doc=$doc]
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$error = winerror::$error,
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)*
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}
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fn desc(err: WinError) -> &'static str {
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use WinError::*;
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match err {
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UnknownError => r" Unknown error occurred.",
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$($error => $doc,)*
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}
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}
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fn from_u32(err: u32) -> WinError {
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use WinError::*;
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match err {
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$(winerror::$error => $error,)*
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_ => UnknownError,
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}
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}
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}
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}
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win_error_expand! {
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/// The operation completed successfully.
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ERROR_SUCCESS,
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/// The system cannot find the file specified.
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ERROR_FILE_NOT_FOUND,
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/// The system cannot find the path specified.
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ERROR_PATH_NOT_FOUND,
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/// The system cannot open the file.
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ERROR_TOO_MANY_OPEN_FILES,
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/// Access is denied.
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ERROR_ACCESS_DENIED,
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/// The handle is invalid.
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ERROR_INVALID_HANDLE,
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/// Not enough storage is available to process this command.
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ERROR_NOT_ENOUGH_MEMORY,
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/// The environment is incorrect.
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ERROR_BAD_ENVIRONMENT,
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/// Not enough storage is available to complete this operation.
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ERROR_OUTOFMEMORY,
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/// The device is not ready.
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ERROR_NOT_READY,
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/// The request is not supported.
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ERROR_NOT_SUPPORTED,
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/// The file exists.
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ERROR_FILE_EXISTS,
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/// The pipe has been ended.
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ERROR_BROKEN_PIPE,
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/// The file name is too long.
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ERROR_BUFFER_OVERFLOW,
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/// The directory is not empty.
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ERROR_DIR_NOT_EMPTY,
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/// The volume label you entered exceeds the label character limit of the destination file system.
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ERROR_LABEL_TOO_LONG,
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/// The requested resource is in use.
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ERROR_BUSY,
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/// The file name, directory name, or volume label syntax is incorrect.
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ERROR_INVALID_NAME,
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/// The process cannot access the file because it is being used by another process.
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ERROR_SHARING_VIOLATION,
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/// A required privilege is not held by the client.
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ERROR_PRIVILEGE_NOT_HELD,
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/// The file or directory is not a reparse point.
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ERROR_NOT_A_REPARSE_POINT,
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/// An attempt was made to move the file pointer before the beginning of the file.
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ERROR_NEGATIVE_SEEK,
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}
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impl WinError {
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/// Returns the last error as WinError.
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pub fn last() -> Self {
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Self::from_u32(unsafe { GetLastError() })
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}
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/// Constructs WinError from error code.
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pub fn from_u32(err: u32) -> Self {
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from_u32(err)
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}
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/// Returns error's description string. This description matches
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/// the docs for the error.
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pub fn desc(self) -> &'static str {
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desc(self)
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}
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}
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impl std::error::Error for WinError {
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fn description(&self) -> &str {
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self.desc()
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}
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}
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impl std::fmt::Display for WinError {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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write!(f, "{:?}: {}", self, self.desc())
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}
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}
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impl From<WinError> for std::io::Error {
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fn from(err: WinError) -> Self {
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Self::from_raw_os_error(err as i32)
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}
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}
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