mirror of
https://github.com/denoland/deno
synced 2024-09-19 16:12:30 +00:00
917 lines
24 KiB
Rust
917 lines
24 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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// Some deserializer fields are only used on Unix and Windows build fails without it
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use super::dispatch_json::{blocking_json, Deserialize, JsonOp, Value};
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use super::io::std_file_resource;
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use super::io::{FileMetadata, StreamResource, StreamResourceHolder};
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use crate::fs::resolve_from_cwd;
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use crate::op_error::OpError;
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use crate::ops::dispatch_json::JsonResult;
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use crate::state::State;
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use deno_core::CoreIsolate;
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use deno_core::ZeroCopyBuf;
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use futures::future::FutureExt;
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use std::convert::From;
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use std::env::{current_dir, set_current_dir, temp_dir};
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use std::io;
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use std::path::{Path, PathBuf};
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use std::time::SystemTime;
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use std::time::UNIX_EPOCH;
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use rand::{thread_rng, Rng};
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pub fn init(i: &mut CoreIsolate, s: &State) {
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i.register_op("op_open", s.stateful_json_op2(op_open));
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i.register_op("op_seek", s.stateful_json_op2(op_seek));
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i.register_op("op_umask", s.stateful_json_op(op_umask));
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i.register_op("op_chdir", s.stateful_json_op(op_chdir));
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i.register_op("op_mkdir", s.stateful_json_op(op_mkdir));
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i.register_op("op_chmod", s.stateful_json_op(op_chmod));
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i.register_op("op_chown", s.stateful_json_op(op_chown));
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i.register_op("op_remove", s.stateful_json_op(op_remove));
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i.register_op("op_copy_file", s.stateful_json_op(op_copy_file));
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i.register_op("op_stat", s.stateful_json_op(op_stat));
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i.register_op("op_realpath", s.stateful_json_op(op_realpath));
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i.register_op("op_read_dir", s.stateful_json_op(op_read_dir));
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i.register_op("op_rename", s.stateful_json_op(op_rename));
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i.register_op("op_link", s.stateful_json_op(op_link));
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i.register_op("op_symlink", s.stateful_json_op(op_symlink));
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i.register_op("op_read_link", s.stateful_json_op(op_read_link));
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i.register_op("op_truncate", s.stateful_json_op(op_truncate));
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i.register_op("op_make_temp_dir", s.stateful_json_op(op_make_temp_dir));
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i.register_op("op_make_temp_file", s.stateful_json_op(op_make_temp_file));
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i.register_op("op_cwd", s.stateful_json_op(op_cwd));
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i.register_op("op_utime", s.stateful_json_op(op_utime));
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}
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fn into_string(s: std::ffi::OsString) -> Result<String, OpError> {
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s.into_string().map_err(|_| OpError::invalid_utf8())
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}
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct OpenArgs {
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promise_id: Option<u64>,
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path: String,
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options: OpenOptions,
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mode: Option<u32>,
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}
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#[derive(Deserialize, Default, Debug)]
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#[serde(rename_all = "camelCase")]
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#[serde(default)]
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struct OpenOptions {
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read: bool,
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write: bool,
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create: bool,
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truncate: bool,
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append: bool,
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create_new: bool,
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}
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fn op_open(
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isolate: &mut CoreIsolate,
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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let args: OpenArgs = serde_json::from_value(args)?;
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let path = resolve_from_cwd(Path::new(&args.path))?;
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let resource_table = isolate.resource_table.clone();
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let mut open_options = std::fs::OpenOptions::new();
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if let Some(mode) = args.mode {
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// mode only used if creating the file on Unix
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// if not specified, defaults to 0o666
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#[cfg(unix)]
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{
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use std::os::unix::fs::OpenOptionsExt;
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open_options.mode(mode & 0o777);
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}
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#[cfg(not(unix))]
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let _ = mode; // avoid unused warning
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}
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let options = args.options;
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if options.read {
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state.check_read(&path)?;
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}
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if options.write || options.append {
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state.check_write(&path)?;
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}
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open_options
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.read(options.read)
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.create(options.create)
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.write(options.write)
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.truncate(options.truncate)
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.append(options.append)
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.create_new(options.create_new);
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let is_sync = args.promise_id.is_none();
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if is_sync {
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let std_file = open_options.open(path)?;
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let tokio_file = tokio::fs::File::from_std(std_file);
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let mut resource_table = resource_table.borrow_mut();
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let rid = resource_table.add(
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"fsFile",
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Box::new(StreamResourceHolder::new(StreamResource::FsFile(Some((
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tokio_file,
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FileMetadata::default(),
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))))),
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);
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Ok(JsonOp::Sync(json!(rid)))
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} else {
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let fut = async move {
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let tokio_file = tokio::fs::OpenOptions::from(open_options)
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.open(path)
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.await?;
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let mut resource_table = resource_table.borrow_mut();
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let rid = resource_table.add(
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"fsFile",
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Box::new(StreamResourceHolder::new(StreamResource::FsFile(Some((
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tokio_file,
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FileMetadata::default(),
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))))),
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);
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Ok(json!(rid))
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};
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Ok(JsonOp::Async(fut.boxed_local()))
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}
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}
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct SeekArgs {
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promise_id: Option<u64>,
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rid: i32,
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offset: i32,
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whence: i32,
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}
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fn op_seek(
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isolate: &mut CoreIsolate,
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_state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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use std::io::{Seek, SeekFrom};
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let args: SeekArgs = serde_json::from_value(args)?;
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let rid = args.rid as u32;
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let offset = args.offset;
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let whence = args.whence as u32;
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// Translate seek mode to Rust repr.
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let seek_from = match whence {
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0 => SeekFrom::Start(offset as u64),
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1 => SeekFrom::Current(i64::from(offset)),
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2 => SeekFrom::End(i64::from(offset)),
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_ => {
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return Err(OpError::type_error(format!(
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"Invalid seek mode: {}",
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whence
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)));
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}
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};
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let resource_table = isolate.resource_table.clone();
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let is_sync = args.promise_id.is_none();
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if is_sync {
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let mut resource_table = resource_table.borrow_mut();
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let pos = std_file_resource(&mut resource_table, rid, |r| match r {
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Ok(std_file) => std_file.seek(seek_from).map_err(OpError::from),
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Err(_) => Err(OpError::type_error(
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"cannot seek on this type of resource".to_string(),
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)),
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})?;
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Ok(JsonOp::Sync(json!(pos)))
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} else {
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// TODO(ry) This is a fake async op. We need to use poll_fn,
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// tokio::fs::File::start_seek and tokio::fs::File::poll_complete
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let fut = async move {
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let mut resource_table = resource_table.borrow_mut();
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let pos = std_file_resource(&mut resource_table, rid, |r| match r {
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Ok(std_file) => std_file.seek(seek_from).map_err(OpError::from),
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Err(_) => Err(OpError::type_error(
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"cannot seek on this type of resource".to_string(),
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)),
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})?;
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Ok(json!(pos))
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};
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Ok(JsonOp::Async(fut.boxed_local()))
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}
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}
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#[derive(Deserialize)]
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struct UmaskArgs {
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mask: Option<u32>,
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}
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fn op_umask(
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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state.check_unstable("Deno.umask");
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let args: UmaskArgs = serde_json::from_value(args)?;
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// TODO implement umask for Windows
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// see https://github.com/nodejs/node/blob/master/src/node_process_methods.cc
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// and https://docs.microsoft.com/fr-fr/cpp/c-runtime-library/reference/umask?view=vs-2019
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#[cfg(not(unix))]
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{
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let _ = args.mask; // avoid unused warning.
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Err(OpError::not_implemented())
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}
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#[cfg(unix)]
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{
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use nix::sys::stat::mode_t;
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use nix::sys::stat::umask;
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use nix::sys::stat::Mode;
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let r = if let Some(mask) = args.mask {
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// If mask provided, return previous.
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umask(Mode::from_bits_truncate(mask as mode_t))
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} else {
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// If no mask provided, we query the current. Requires two syscalls.
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let prev = umask(Mode::from_bits_truncate(0o777));
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let _ = umask(prev);
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prev
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};
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Ok(JsonOp::Sync(json!(r.bits() as u32)))
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}
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}
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#[derive(Deserialize)]
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struct ChdirArgs {
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directory: String,
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}
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fn op_chdir(
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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let args: ChdirArgs = serde_json::from_value(args)?;
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let d = PathBuf::from(&args.directory);
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state.check_read(&d)?;
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set_current_dir(&d)?;
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Ok(JsonOp::Sync(json!({})))
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}
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct MkdirArgs {
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promise_id: Option<u64>,
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path: String,
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recursive: bool,
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mode: Option<u32>,
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}
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fn op_mkdir(
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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let args: MkdirArgs = serde_json::from_value(args)?;
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let path = resolve_from_cwd(Path::new(&args.path))?;
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let mode = args.mode.unwrap_or(0o777) & 0o777;
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state.check_write(&path)?;
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let is_sync = args.promise_id.is_none();
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blocking_json(is_sync, move || {
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debug!("op_mkdir {} {:o} {}", path.display(), mode, args.recursive);
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let mut builder = std::fs::DirBuilder::new();
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builder.recursive(args.recursive);
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#[cfg(unix)]
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{
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use std::os::unix::fs::DirBuilderExt;
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builder.mode(mode);
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}
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builder.create(path)?;
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Ok(json!({}))
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})
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}
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct ChmodArgs {
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promise_id: Option<u64>,
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path: String,
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mode: u32,
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}
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fn op_chmod(
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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let args: ChmodArgs = serde_json::from_value(args)?;
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let path = resolve_from_cwd(Path::new(&args.path))?;
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let mode = args.mode & 0o777;
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state.check_write(&path)?;
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let is_sync = args.promise_id.is_none();
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blocking_json(is_sync, move || {
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debug!("op_chmod {} {:o}", path.display(), mode);
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#[cfg(unix)]
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{
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use std::os::unix::fs::PermissionsExt;
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let permissions = PermissionsExt::from_mode(mode);
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std::fs::set_permissions(&path, permissions)?;
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Ok(json!({}))
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}
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// TODO Implement chmod for Windows (#4357)
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#[cfg(not(unix))]
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{
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// Still check file/dir exists on Windows
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let _metadata = std::fs::metadata(&path)?;
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Err(OpError::not_implemented())
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}
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})
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}
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct ChownArgs {
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promise_id: Option<u64>,
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path: String,
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uid: u32,
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gid: u32,
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}
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fn op_chown(
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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let args: ChownArgs = serde_json::from_value(args)?;
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let path = resolve_from_cwd(Path::new(&args.path))?;
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state.check_write(&path)?;
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let is_sync = args.promise_id.is_none();
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blocking_json(is_sync, move || {
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debug!("op_chown {} {} {}", path.display(), args.uid, args.gid);
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#[cfg(unix)]
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{
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use nix::unistd::{chown, Gid, Uid};
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let nix_uid = Uid::from_raw(args.uid);
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let nix_gid = Gid::from_raw(args.gid);
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chown(&path, Option::Some(nix_uid), Option::Some(nix_gid))?;
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Ok(json!({}))
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}
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// TODO Implement chown for Windows
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#[cfg(not(unix))]
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{
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// Still check file/dir exists on Windows
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let _metadata = std::fs::metadata(&path)?;
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Err(OpError::not_implemented())
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}
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})
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}
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct RemoveArgs {
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promise_id: Option<u64>,
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path: String,
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recursive: bool,
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}
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fn op_remove(
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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let args: RemoveArgs = serde_json::from_value(args)?;
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let path = resolve_from_cwd(Path::new(&args.path))?;
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let recursive = args.recursive;
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state.check_write(&path)?;
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let is_sync = args.promise_id.is_none();
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blocking_json(is_sync, move || {
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let metadata = std::fs::symlink_metadata(&path)?;
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debug!("op_remove {} {}", path.display(), recursive);
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let file_type = metadata.file_type();
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if file_type.is_file() || file_type.is_symlink() {
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std::fs::remove_file(&path)?;
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} else if recursive {
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std::fs::remove_dir_all(&path)?;
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} else {
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std::fs::remove_dir(&path)?;
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}
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Ok(json!({}))
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})
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}
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct CopyFileArgs {
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promise_id: Option<u64>,
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from: String,
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to: String,
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}
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fn op_copy_file(
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state: &State,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, OpError> {
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let args: CopyFileArgs = serde_json::from_value(args)?;
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let from = resolve_from_cwd(Path::new(&args.from))?;
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let to = resolve_from_cwd(Path::new(&args.to))?;
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state.check_read(&from)?;
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state.check_write(&to)?;
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debug!("op_copy_file {} {}", from.display(), to.display());
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let is_sync = args.promise_id.is_none();
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blocking_json(is_sync, move || {
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// On *nix, Rust reports non-existent `from` as ErrorKind::InvalidInput
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// See https://github.com/rust-lang/rust/issues/54800
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// Once the issue is resolved, we should remove this workaround.
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if cfg!(unix) && !from.is_file() {
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return Err(OpError::not_found("File not found".to_string()));
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}
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|
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// returns size of from as u64 (we ignore)
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std::fs::copy(&from, &to)?;
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Ok(json!({}))
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})
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}
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fn to_msec(maybe_time: Result<SystemTime, io::Error>) -> serde_json::Value {
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match maybe_time {
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Ok(time) => {
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let msec = time
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.duration_since(UNIX_EPOCH)
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.map(|t| t.as_secs_f64() * 1000f64)
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.unwrap_or_else(|err| err.duration().as_secs_f64() * -1000f64);
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serde_json::Number::from_f64(msec)
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.map(serde_json::Value::Number)
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.unwrap_or(serde_json::Value::Null)
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}
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Err(_) => serde_json::Value::Null,
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}
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}
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|
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#[inline(always)]
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fn get_stat_json(metadata: std::fs::Metadata) -> JsonResult {
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// Unix stat member (number types only). 0 if not on unix.
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|
macro_rules! usm {
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($member: ident) => {{
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#[cfg(unix)]
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{
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metadata.$member()
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}
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#[cfg(not(unix))]
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{
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0
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}
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}};
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}
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|
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#[cfg(unix)]
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use std::os::unix::fs::MetadataExt;
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let json_val = json!({
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"isFile": metadata.is_file(),
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"isDirectory": metadata.is_dir(),
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"isSymlink": metadata.file_type().is_symlink(),
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"size": metadata.len(),
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// In milliseconds, like JavaScript. Available on both Unix or Windows.
|
|
"mtime": to_msec(metadata.modified()),
|
|
"atime": to_msec(metadata.accessed()),
|
|
"birthtime": to_msec(metadata.created()),
|
|
// Following are only valid under Unix.
|
|
"dev": usm!(dev),
|
|
"ino": usm!(ino),
|
|
"mode": usm!(mode),
|
|
"nlink": usm!(nlink),
|
|
"uid": usm!(uid),
|
|
"gid": usm!(gid),
|
|
"rdev": usm!(rdev),
|
|
// TODO(kevinkassimo): *time_nsec requires BigInt.
|
|
// Probably should be treated as String if we need to add them.
|
|
"blksize": usm!(blksize),
|
|
"blocks": usm!(blocks),
|
|
});
|
|
Ok(json_val)
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct StatArgs {
|
|
promise_id: Option<u64>,
|
|
path: String,
|
|
lstat: bool,
|
|
}
|
|
|
|
fn op_stat(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: StatArgs = serde_json::from_value(args)?;
|
|
let path = resolve_from_cwd(Path::new(&args.path))?;
|
|
let lstat = args.lstat;
|
|
|
|
state.check_read(&path)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_stat {} {}", path.display(), lstat);
|
|
let metadata = if lstat {
|
|
std::fs::symlink_metadata(&path)?
|
|
} else {
|
|
std::fs::metadata(&path)?
|
|
};
|
|
get_stat_json(metadata)
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct RealpathArgs {
|
|
promise_id: Option<u64>,
|
|
path: String,
|
|
}
|
|
|
|
fn op_realpath(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: RealpathArgs = serde_json::from_value(args)?;
|
|
let path = resolve_from_cwd(Path::new(&args.path))?;
|
|
|
|
state.check_read(&path)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_realpath {}", path.display());
|
|
// corresponds to the realpath on Unix and
|
|
// CreateFile and GetFinalPathNameByHandle on Windows
|
|
let realpath = std::fs::canonicalize(&path)?;
|
|
let mut realpath_str =
|
|
into_string(realpath.into_os_string())?.replace("\\", "/");
|
|
if cfg!(windows) {
|
|
realpath_str = realpath_str.trim_start_matches("//?/").to_string();
|
|
}
|
|
Ok(json!(realpath_str))
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct ReadDirArgs {
|
|
promise_id: Option<u64>,
|
|
path: String,
|
|
}
|
|
|
|
fn op_read_dir(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: ReadDirArgs = serde_json::from_value(args)?;
|
|
let path = resolve_from_cwd(Path::new(&args.path))?;
|
|
|
|
state.check_read(&path)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_read_dir {}", path.display());
|
|
let entries: Vec<_> = std::fs::read_dir(path)?
|
|
.filter_map(|entry| {
|
|
let entry = entry.unwrap();
|
|
let file_type = entry.file_type().unwrap();
|
|
// Not all filenames can be encoded as UTF-8. Skip those for now.
|
|
if let Ok(name) = into_string(entry.file_name()) {
|
|
Some(json!({
|
|
"name": name,
|
|
"isFile": file_type.is_file(),
|
|
"isDirectory": file_type.is_dir(),
|
|
"isSymlink": file_type.is_symlink()
|
|
}))
|
|
} else {
|
|
None
|
|
}
|
|
})
|
|
.collect();
|
|
|
|
Ok(json!({ "entries": entries }))
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct RenameArgs {
|
|
promise_id: Option<u64>,
|
|
oldpath: String,
|
|
newpath: String,
|
|
}
|
|
|
|
fn op_rename(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: RenameArgs = serde_json::from_value(args)?;
|
|
let oldpath = resolve_from_cwd(Path::new(&args.oldpath))?;
|
|
let newpath = resolve_from_cwd(Path::new(&args.newpath))?;
|
|
|
|
state.check_read(&oldpath)?;
|
|
state.check_write(&oldpath)?;
|
|
state.check_write(&newpath)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_rename {} {}", oldpath.display(), newpath.display());
|
|
std::fs::rename(&oldpath, &newpath)?;
|
|
Ok(json!({}))
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct LinkArgs {
|
|
promise_id: Option<u64>,
|
|
oldpath: String,
|
|
newpath: String,
|
|
}
|
|
|
|
fn op_link(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
state.check_unstable("Deno.link");
|
|
let args: LinkArgs = serde_json::from_value(args)?;
|
|
let oldpath = resolve_from_cwd(Path::new(&args.oldpath))?;
|
|
let newpath = resolve_from_cwd(Path::new(&args.newpath))?;
|
|
|
|
state.check_read(&oldpath)?;
|
|
state.check_write(&newpath)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_link {} {}", oldpath.display(), newpath.display());
|
|
std::fs::hard_link(&oldpath, &newpath)?;
|
|
Ok(json!({}))
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct SymlinkArgs {
|
|
promise_id: Option<u64>,
|
|
oldpath: String,
|
|
newpath: String,
|
|
}
|
|
|
|
fn op_symlink(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
state.check_unstable("Deno.symlink");
|
|
let args: SymlinkArgs = serde_json::from_value(args)?;
|
|
let oldpath = resolve_from_cwd(Path::new(&args.oldpath))?;
|
|
let newpath = resolve_from_cwd(Path::new(&args.newpath))?;
|
|
|
|
state.check_write(&newpath)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_symlink {} {}", oldpath.display(), newpath.display());
|
|
#[cfg(unix)]
|
|
{
|
|
use std::os::unix::fs::symlink;
|
|
symlink(&oldpath, &newpath)?;
|
|
Ok(json!({}))
|
|
}
|
|
// TODO Implement symlink, use type for Windows
|
|
#[cfg(not(unix))]
|
|
{
|
|
// Unlike with chmod/chown, here we don't
|
|
// require `oldpath` to exist on Windows
|
|
let _ = oldpath; // avoid unused warning
|
|
Err(OpError::not_implemented())
|
|
}
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct ReadLinkArgs {
|
|
promise_id: Option<u64>,
|
|
path: String,
|
|
}
|
|
|
|
fn op_read_link(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: ReadLinkArgs = serde_json::from_value(args)?;
|
|
let path = resolve_from_cwd(Path::new(&args.path))?;
|
|
|
|
state.check_read(&path)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_read_link {}", path.display());
|
|
let target = std::fs::read_link(&path)?.into_os_string();
|
|
let targetstr = into_string(target)?;
|
|
Ok(json!(targetstr))
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct TruncateArgs {
|
|
promise_id: Option<u64>,
|
|
path: String,
|
|
len: u64,
|
|
}
|
|
|
|
fn op_truncate(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: TruncateArgs = serde_json::from_value(args)?;
|
|
let path = resolve_from_cwd(Path::new(&args.path))?;
|
|
let len = args.len;
|
|
|
|
state.check_write(&path)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_truncate {} {}", path.display(), len);
|
|
let f = std::fs::OpenOptions::new().write(true).open(&path)?;
|
|
f.set_len(len)?;
|
|
Ok(json!({}))
|
|
})
|
|
}
|
|
|
|
fn make_temp(
|
|
dir: Option<&Path>,
|
|
prefix: Option<&str>,
|
|
suffix: Option<&str>,
|
|
is_dir: bool,
|
|
) -> std::io::Result<PathBuf> {
|
|
let prefix_ = prefix.unwrap_or("");
|
|
let suffix_ = suffix.unwrap_or("");
|
|
let mut buf: PathBuf = match dir {
|
|
Some(ref p) => p.to_path_buf(),
|
|
None => temp_dir(),
|
|
}
|
|
.join("_");
|
|
let mut rng = thread_rng();
|
|
loop {
|
|
let unique = rng.gen::<u32>();
|
|
buf.set_file_name(format!("{}{:08x}{}", prefix_, unique, suffix_));
|
|
let r = if is_dir {
|
|
#[allow(unused_mut)]
|
|
let mut builder = std::fs::DirBuilder::new();
|
|
#[cfg(unix)]
|
|
{
|
|
use std::os::unix::fs::DirBuilderExt;
|
|
builder.mode(0o700);
|
|
}
|
|
builder.create(buf.as_path())
|
|
} else {
|
|
let mut open_options = std::fs::OpenOptions::new();
|
|
open_options.write(true).create_new(true);
|
|
#[cfg(unix)]
|
|
{
|
|
use std::os::unix::fs::OpenOptionsExt;
|
|
open_options.mode(0o600);
|
|
}
|
|
open_options.open(buf.as_path())?;
|
|
Ok(())
|
|
};
|
|
match r {
|
|
Err(ref e) if e.kind() == std::io::ErrorKind::AlreadyExists => continue,
|
|
Ok(_) => return Ok(buf),
|
|
Err(e) => return Err(e),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct MakeTempArgs {
|
|
promise_id: Option<u64>,
|
|
dir: Option<String>,
|
|
prefix: Option<String>,
|
|
suffix: Option<String>,
|
|
}
|
|
|
|
fn op_make_temp_dir(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: MakeTempArgs = serde_json::from_value(args)?;
|
|
|
|
let dir = args.dir.map(|s| resolve_from_cwd(Path::new(&s)).unwrap());
|
|
let prefix = args.prefix.map(String::from);
|
|
let suffix = args.suffix.map(String::from);
|
|
|
|
state.check_write(dir.clone().unwrap_or_else(temp_dir).as_path())?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
// TODO(piscisaureus): use byte vector for paths, not a string.
|
|
// See https://github.com/denoland/deno/issues/627.
|
|
// We can't assume that paths are always valid utf8 strings.
|
|
let path = make_temp(
|
|
// Converting Option<String> to Option<&str>
|
|
dir.as_ref().map(|x| &**x),
|
|
prefix.as_ref().map(|x| &**x),
|
|
suffix.as_ref().map(|x| &**x),
|
|
true,
|
|
)?;
|
|
let path_str = into_string(path.into_os_string())?;
|
|
|
|
Ok(json!(path_str))
|
|
})
|
|
}
|
|
|
|
fn op_make_temp_file(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let args: MakeTempArgs = serde_json::from_value(args)?;
|
|
|
|
let dir = args.dir.map(|s| resolve_from_cwd(Path::new(&s)).unwrap());
|
|
let prefix = args.prefix.map(String::from);
|
|
let suffix = args.suffix.map(String::from);
|
|
|
|
state.check_write(dir.clone().unwrap_or_else(temp_dir).as_path())?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
// TODO(piscisaureus): use byte vector for paths, not a string.
|
|
// See https://github.com/denoland/deno/issues/627.
|
|
// We can't assume that paths are always valid utf8 strings.
|
|
let path = make_temp(
|
|
// Converting Option<String> to Option<&str>
|
|
dir.as_ref().map(|x| &**x),
|
|
prefix.as_ref().map(|x| &**x),
|
|
suffix.as_ref().map(|x| &**x),
|
|
false,
|
|
)?;
|
|
let path_str = into_string(path.into_os_string())?;
|
|
|
|
Ok(json!(path_str))
|
|
})
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct UtimeArgs {
|
|
promise_id: Option<u64>,
|
|
path: String,
|
|
atime: u64,
|
|
mtime: u64,
|
|
}
|
|
|
|
fn op_utime(
|
|
state: &State,
|
|
args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
state.check_unstable("Deno.utime");
|
|
|
|
let args: UtimeArgs = serde_json::from_value(args)?;
|
|
let path = resolve_from_cwd(Path::new(&args.path))?;
|
|
|
|
state.check_write(&path)?;
|
|
|
|
let is_sync = args.promise_id.is_none();
|
|
blocking_json(is_sync, move || {
|
|
debug!("op_utime {} {} {}", args.path, args.atime, args.mtime);
|
|
utime::set_file_times(args.path, args.atime, args.mtime)?;
|
|
Ok(json!({}))
|
|
})
|
|
}
|
|
|
|
fn op_cwd(
|
|
state: &State,
|
|
_args: Value,
|
|
_zero_copy: Option<ZeroCopyBuf>,
|
|
) -> Result<JsonOp, OpError> {
|
|
let path = current_dir()?;
|
|
state.check_read(&path)?;
|
|
let path_str = into_string(path.into_os_string())?;
|
|
Ok(JsonOp::Sync(json!(path_str)))
|
|
}
|