(index<- ) ./libstd/io/fs.rs
git branch: * master 5200215 auto merge of #14035 : alexcrichton/rust/experimental, r=huonw
modified: Fri May 9 13:02:28 2014
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10
11 /*! Synchronous File I/O
12
13 This module provides a set of functions and traits for working
14 with regular files & directories on a filesystem.
15
16 At the top-level of the module are a set of freestanding functions, associated
17 with various filesystem operations. They all operate on `Path` objects.
18
19 All operations in this module, including those as part of `File` et al
20 block the task during execution. In the event of failure, all functions/methods
21 will return an `IoResult` type with an `Err` value.
22
23 Also included in this module is an implementation block on the `Path` object
24 defined in `std::path::Path`. The impl adds useful methods about inspecting the
25 metadata of a file. This includes getting the `stat` information, reading off
26 particular bits of it, etc.
27
28 # Example
29
30 ```rust
31 # #![allow(unused_must_use)]
32 use std::io::{File, fs};
33
34 let path = Path::new("foo.txt");
35
36 // create the file, whether it exists or not
37 let mut file = File::create(&path);
38 file.write(bytes!("foobar"));
39 # drop(file);
40
41 // open the file in read-only mode
42 let mut file = File::open(&path);
43 file.read_to_end();
44
45 println!("{}", path.stat().unwrap().size);
46 # drop(file);
47 fs::unlink(&path);
48 ```
49
50 */
51
52 use c_str::ToCStr;
53 use clone::Clone;
54 use container::Container;
55 use iter::Iterator;
56 use kinds::Send;
57 use super::{Reader, Writer, Seek};
58 use super::{SeekStyle, Read, Write, Open, IoError, Truncate};
59 use super::{FileMode, FileAccess, FileStat, IoResult, FilePermission};
60 use rt::rtio::{RtioFileStream, IoFactory, LocalIo};
61 use io;
62 use option::{Some, None, Option};
63 use owned::Box;
64 use result::{Ok, Err};
65 use path;
66 use path::{Path, GenericPath};
67 use slice::{OwnedVector, ImmutableVector};
68 use vec::Vec;
69
70 /// Unconstrained file access type that exposes read and write operations
71 ///
72 /// Can be constructed via `File::open()`, `File::create()`, and
73 /// `File::open_mode()`.
74 ///
75 /// # Error
76 ///
77 /// This type will return errors as an `IoResult<T>` if operations are
78 /// attempted against it for which its underlying file descriptor was not
79 /// configured at creation time, via the `FileAccess` parameter to
80 /// `File::open_mode()`.
81 pub struct File {
82 fd: Box<RtioFileStream:Send>,
83 path: Path,
84 last_nread: int,
85 }
86
87 impl File {
88 /// Open a file at `path` in the mode specified by the `mode` and `access`
89 /// arguments
90 ///
91 /// # Example
92 ///
93 /// ```rust,should_fail
94 /// use std::io::{File, Open, ReadWrite};
95 ///
96 /// let p = Path::new("/some/file/path.txt");
97 ///
98 /// let file = match File::open_mode(&p, Open, ReadWrite) {
99 /// Ok(f) => f,
100 /// Err(e) => fail!("file error: {}", e),
101 /// };
102 /// // do some stuff with that file
103 ///
104 /// // the file will be closed at the end of this block
105 /// ```
106 ///
107 /// `FileMode` and `FileAccess` provide information about the permissions
108 /// context in which a given stream is created. More information about them
109 /// can be found in `std::io`'s docs. If a file is opened with `Write`
110 /// or `ReadWrite` access, then it will be created it does not already
111 /// exist.
112 ///
113 /// Note that, with this function, a `File` is returned regardless of the
114 /// access-limitations indicated by `FileAccess` (e.g. calling `write` on a
115 /// `File` opened as `Read` will return an error at runtime).
116 ///
117 /// # Error
118 ///
119 /// This function will return an error under a number of different
120 /// circumstances, to include but not limited to:
121 ///
122 /// * Opening a file that does not exist with `Read` access.
123 /// * Attempting to open a file with a `FileAccess` that the user lacks
124 /// permissions for
125 /// * Filesystem-level errors (full disk, etc)
126 pub fn open_mode(path: &Path,
127 mode: FileMode,
128 access: FileAccess) -> IoResult<File> {
129 LocalIo::maybe_raise(|io| {
130 io.fs_open(&path.to_c_str(), mode, access).map(|fd| {
131 File {
132 path: path.clone(),
133 fd: fd,
134 last_nread: -1
135 }
136 })
137 })
138 }
139
140 /// Attempts to open a file in read-only mode. This function is equivalent to
141 /// `File::open_mode(path, Open, Read)`, and will raise all of the same
142 /// errors that `File::open_mode` does.
143 ///
144 /// For more information, see the `File::open_mode` function.
145 ///
146 /// # Example
147 ///
148 /// ```rust
149 /// use std::io::File;
150 ///
151 /// let contents = File::open(&Path::new("foo.txt")).read_to_end();
152 /// ```
153 pub fn open(path: &Path) -> IoResult<File> {
154 File::open_mode(path, Open, Read)
155 }
156
157 /// Attempts to create a file in write-only mode. This function is
158 /// equivalent to `File::open_mode(path, Truncate, Write)`, and will
159 /// raise all of the same errors that `File::open_mode` does.
160 ///
161 /// For more information, see the `File::open_mode` function.
162 ///
163 /// # Example
164 ///
165 /// ```rust
166 /// # #![allow(unused_must_use)]
167 /// use std::io::File;
168 ///
169 /// let mut f = File::create(&Path::new("foo.txt"));
170 /// f.write(bytes!("This is a sample file"));
171 /// # drop(f);
172 /// # ::std::io::fs::unlink(&Path::new("foo.txt"));
173 /// ```
174 pub fn create(path: &Path) -> IoResult<File> {
175 File::open_mode(path, Truncate, Write)
176 }
177
178 /// Returns the original path which was used to open this file.
179 pub fn path<'a>(&'a self) -> &'a Path {
180 &self.path
181 }
182
183 /// Synchronizes all modifications to this file to its permanent storage
184 /// device. This will flush any internal buffers necessary to perform this
185 /// operation.
186 pub fn fsync(&mut self) -> IoResult<()> {
187 self.fd.fsync()
188 }
189
190 /// This function is similar to `fsync`, except that it may not synchronize
191 /// file metadata to the filesystem. This is intended for use case which
192 /// must synchronize content, but don't need the metadata on disk. The goal
193 /// of this method is to reduce disk operations.
194 pub fn datasync(&mut self) -> IoResult<()> {
195 self.fd.datasync()
196 }
197
198 /// Either truncates or extends the underlying file, updating the size of
199 /// this file to become `size`. This is equivalent to unix's `truncate`
200 /// function.
201 ///
202 /// If the `size` is less than the current file's size, then the file will
203 /// be shrunk. If it is greater than the current file's size, then the file
204 /// will be extended to `size` and have all of the intermediate data filled
205 /// in with 0s.
206 pub fn truncate(&mut self, size: i64) -> IoResult<()> {
207 self.fd.truncate(size)
208 }
209
210 /// Tests whether this stream has reached EOF.
211 ///
212 /// If true, then this file will no longer continue to return data via
213 /// `read`.
214 pub fn eof(&self) -> bool {
215 self.last_nread == 0
216 }
217 }
218
219 /// Unlink a file from the underlying filesystem.
220 ///
221 /// # Example
222 ///
223 /// ```rust
224 /// # #![allow(unused_must_use)]
225 /// use std::io::fs;
226 ///
227 /// let p = Path::new("/some/file/path.txt");
228 /// fs::unlink(&p);
229 /// ```
230 ///
231 /// Note that, just because an unlink call was successful, it is not
232 /// guaranteed that a file is immediately deleted (e.g. depending on
233 /// platform, other open file descriptors may prevent immediate removal)
234 ///
235 /// # Error
236 ///
237 /// This function will return an error if the path points to a directory, the
238 /// user lacks permissions to remove the file, or if some other filesystem-level
239 /// error occurs.
240 pub fn unlink(path: &Path) -> IoResult<()> {
241 LocalIo::maybe_raise(|io| io.fs_unlink(&path.to_c_str()))
242 }
243
244 /// Given a path, query the file system to get information about a file,
245 /// directory, etc. This function will traverse symlinks to query
246 /// information about the destination file.
247 ///
248 /// # Example
249 ///
250 /// ```rust
251 /// use std::io::fs;
252 ///
253 /// let p = Path::new("/some/file/path.txt");
254 /// match fs::stat(&p) {
255 /// Ok(stat) => { /* ... */ }
256 /// Err(e) => { /* handle error */ }
257 /// }
258 /// ```
259 ///
260 /// # Error
261 ///
262 /// This call will return an error if the user lacks the requisite permissions
263 /// to perform a `stat` call on the given path or if there is no entry in the
264 /// filesystem at the provided path.
265 pub fn stat(path: &Path) -> IoResult<FileStat> {
266 LocalIo::maybe_raise(|io| {
267 io.fs_stat(&path.to_c_str())
268 })
269 }
270
271 /// Perform the same operation as the `stat` function, except that this
272 /// function does not traverse through symlinks. This will return
273 /// information about the symlink file instead of the file that it points
274 /// to.
275 ///
276 /// # Error
277 ///
278 /// See `stat`
279 pub fn lstat(path: &Path) -> IoResult<FileStat> {
280 LocalIo::maybe_raise(|io| {
281 io.fs_lstat(&path.to_c_str())
282 })
283 }
284
285 /// Rename a file or directory to a new name.
286 ///
287 /// # Example
288 ///
289 /// ```rust
290 /// # #![allow(unused_must_use)]
291 /// use std::io::fs;
292 ///
293 /// fs::rename(&Path::new("foo"), &Path::new("bar"));
294 /// ```
295 ///
296 /// # Error
297 ///
298 /// Will return an error if the provided `path` doesn't exist, the process lacks
299 /// permissions to view the contents, or if some other intermittent I/O error
300 /// occurs.
301 pub fn rename(from: &Path, to: &Path) -> IoResult<()> {
302 LocalIo::maybe_raise(|io| io.fs_rename(&from.to_c_str(), &to.to_c_str()))
303 }
304
305 /// Copies the contents of one file to another. This function will also
306 /// copy the permission bits of the original file to the destination file.
307 ///
308 /// Note that if `from` and `to` both point to the same file, then the file
309 /// will likely get truncated by this operation.
310 ///
311 /// # Example
312 ///
313 /// ```rust
314 /// # #![allow(unused_must_use)]
315 /// use std::io::fs;
316 ///
317 /// fs::copy(&Path::new("foo.txt"), &Path::new("bar.txt"));
318 /// ```
319 ///
320 /// # Error
321 ///
322 /// Will return an error in the following situations, but is not limited to
323 /// just these cases:
324 ///
325 /// * The `from` path is not a file
326 /// * The `from` file does not exist
327 /// * The current process does not have the permission rights to access
328 /// `from` or write `to`
329 ///
330 /// Note that this copy is not atomic in that once the destination is
331 /// ensured to not exist, there is nothing preventing the destination from
332 /// being created and then destroyed by this operation.
333 pub fn copy(from: &Path, to: &Path) -> IoResult<()> {
334 if !from.is_file() {
335 return Err(IoError {
336 kind: io::MismatchedFileTypeForOperation,
337 desc: "the source path is not an existing file",
338 detail: None,
339 })
340 }
341
342 let mut reader = try!(File::open(from));
343 let mut writer = try!(File::create(to));
344 let mut buf = [0, ..io::DEFAULT_BUF_SIZE];
345
346 loop {
347 let amt = match reader.read(buf) {
348 Ok(n) => n,
349 Err(ref e) if e.kind == io::EndOfFile => { break }
350 Err(e) => return Err(e)
351 };
352 try!(writer.write(buf.slice_to(amt)));
353 }
354
355 chmod(to, try!(from.stat()).perm)
356 }
357
358 /// Changes the permission mode bits found on a file or a directory. This
359 /// function takes a mask from the `io` module
360 ///
361 /// # Example
362 ///
363 /// ```rust
364 /// # #![allow(unused_must_use)]
365 /// use std::io;
366 /// use std::io::fs;
367 ///
368 /// fs::chmod(&Path::new("file.txt"), io::UserFile);
369 /// fs::chmod(&Path::new("file.txt"), io::UserRead | io::UserWrite);
370 /// fs::chmod(&Path::new("dir"), io::UserDir);
371 /// fs::chmod(&Path::new("file.exe"), io::UserExec);
372 /// ```
373 ///
374 /// # Error
375 ///
376 /// If this function encounters an I/O error, it will return an `Err` value.
377 /// Some possible error situations are not having the permission to
378 /// change the attributes of a file or the file not existing.
379 pub fn chmod(path: &Path, mode: io::FilePermission) -> IoResult<()> {
380 LocalIo::maybe_raise(|io| io.fs_chmod(&path.to_c_str(), mode))
381 }
382
383 /// Change the user and group owners of a file at the specified path.
384 pub fn chown(path: &Path, uid: int, gid: int) -> IoResult<()> {
385 LocalIo::maybe_raise(|io| io.fs_chown(&path.to_c_str(), uid, gid))
386 }
387
388 /// Creates a new hard link on the filesystem. The `dst` path will be a
389 /// link pointing to the `src` path. Note that systems often require these
390 /// two paths to both be located on the same filesystem.
391 pub fn link(src: &Path, dst: &Path) -> IoResult<()> {
392 LocalIo::maybe_raise(|io| io.fs_link(&src.to_c_str(), &dst.to_c_str()))
393 }
394
395 /// Creates a new symbolic link on the filesystem. The `dst` path will be a
396 /// symlink pointing to the `src` path.
397 pub fn symlink(src: &Path, dst: &Path) -> IoResult<()> {
398 LocalIo::maybe_raise(|io| io.fs_symlink(&src.to_c_str(), &dst.to_c_str()))
399 }
400
401 /// Reads a symlink, returning the file that the symlink points to.
402 ///
403 /// # Error
404 ///
405 /// This function will return an error on failure. Failure conditions include
406 /// reading a file that does not exist or reading a file which is not a symlink.
407 pub fn readlink(path: &Path) -> IoResult<Path> {
408 LocalIo::maybe_raise(|io| io.fs_readlink(&path.to_c_str()))
409 }
410
411 /// Create a new, empty directory at the provided path
412 ///
413 /// # Example
414 ///
415 /// ```rust
416 /// # #![allow(unused_must_use)]
417 /// use std::io;
418 /// use std::io::fs;
419 ///
420 /// let p = Path::new("/some/dir");
421 /// fs::mkdir(&p, io::UserRWX);
422 /// ```
423 ///
424 /// # Error
425 ///
426 /// This call will return an error if the user lacks permissions to make a new
427 /// directory at the provided path, or if the directory already exists.
428 pub fn mkdir(path: &Path, mode: FilePermission) -> IoResult<()> {
429 LocalIo::maybe_raise(|io| io.fs_mkdir(&path.to_c_str(), mode))
430 }
431
432 /// Remove an existing, empty directory
433 ///
434 /// # Example
435 ///
436 /// ```rust
437 /// # #![allow(unused_must_use)]
438 /// use std::io::fs;
439 ///
440 /// let p = Path::new("/some/dir");
441 /// fs::rmdir(&p);
442 /// ```
443 ///
444 /// # Error
445 ///
446 /// This call will return an error if the user lacks permissions to remove the
447 /// directory at the provided path, or if the directory isn't empty.
448 pub fn rmdir(path: &Path) -> IoResult<()> {
449 LocalIo::maybe_raise(|io| io.fs_rmdir(&path.to_c_str()))
450 }
451
452 /// Retrieve a vector containing all entries within a provided directory
453 ///
454 /// # Example
455 ///
456 /// ```rust
457 /// use std::io;
458 /// use std::io::fs;
459 ///
460 /// // one possible implementation of fs::walk_dir only visiting files
461 /// fn visit_dirs(dir: &Path, cb: |&Path|) -> io::IoResult<()> {
462 /// if dir.is_dir() {
463 /// let contents = try!(fs::readdir(dir));
464 /// for entry in contents.iter() {
465 /// if entry.is_dir() {
466 /// try!(visit_dirs(entry, |p| cb(p)));
467 /// } else {
468 /// cb(entry);
469 /// }
470 /// }
471 /// Ok(())
472 /// } else {
473 /// Err(io::standard_error(io::InvalidInput))
474 /// }
475 /// }
476 /// ```
477 ///
478 /// # Error
479 ///
480 /// Will return an error if the provided `from` doesn't exist, the process lacks
481 /// permissions to view the contents or if the `path` points at a non-directory
482 /// file
483 pub fn readdir(path: &Path) -> IoResult<Vec<Path>> {
484 LocalIo::maybe_raise(|io| {
485 io.fs_readdir(&path.to_c_str(), 0)
486 })
487 }
488
489 /// Returns an iterator which will recursively walk the directory structure
490 /// rooted at `path`. The path given will not be iterated over, and this will
491 /// perform iteration in some top-down order. The contents of unreadable
492 /// subdirectories are ignored.
493 pub fn walk_dir(path: &Path) -> IoResult<Directories> {
494 Ok(Directories { stack: try!(readdir(path)) })
495 }
496
497 /// An iterator which walks over a directory
498 pub struct Directories {
499 stack: Vec<Path>,
500 }
501
502 impl Iterator<Path> for Directories {
503 fn next(&mut self) -> Option<Path> {
504 match self.stack.pop() {
505 Some(path) => {
506 if path.is_dir() {
507 match readdir(&path) {
508 Ok(dirs) => { self.stack.push_all_move(dirs); }
509 Err(..) => {}
510 }
511 }
512 Some(path)
513 }
514 None => None
515 }
516 }
517 }
518
519 /// Recursively create a directory and all of its parent components if they
520 /// are missing.
521 ///
522 /// # Error
523 ///
524 /// This function will return an `Err` value if an error happens, see
525 /// `fs::mkdir` for more information about error conditions and performance.
526 pub fn mkdir_recursive(path: &Path, mode: FilePermission) -> IoResult<()> {
527 // tjc: if directory exists but with different permissions,
528 // should we return false?
529 if path.is_dir() {
530 return Ok(())
531 }
532
533 let mut comps = path.components();
534 let mut curpath = path.root_path().unwrap_or(Path::new("."));
535
536 for c in comps {
537 curpath.push(c);
538
539 match mkdir(&curpath, mode) {
540 Err(mkdir_err) => {
541 // already exists ?
542 if try!(stat(&curpath)).kind != io::TypeDirectory {
543 return Err(mkdir_err);
544 }
545 }
546 Ok(()) => ()
547 }
548 }
549
550 Ok(())
551 }
552
553 /// Removes a directory at this path, after removing all its contents. Use
554 /// carefully!
555 ///
556 /// # Error
557 ///
558 /// This function will return an `Err` value if an error happens. See
559 /// `file::unlink` and `fs::readdir` for possible error conditions.
560 pub fn rmdir_recursive(path: &Path) -> IoResult<()> {
561 let mut rm_stack = Vec::new();
562 rm_stack.push(path.clone());
563
564 while !rm_stack.is_empty() {
565 let children = try!(readdir(rm_stack.last().unwrap()));
566 let mut has_child_dir = false;
567
568 // delete all regular files in the way and push subdirs
569 // on the stack
570 for child in children.move_iter() {
571 // FIXME(#12795) we should use lstat in all cases
572 let child_type = match cfg!(windows) {
573 true => try!(stat(&child)).kind,
574 false => try!(lstat(&child)).kind
575 };
576
577 if child_type == io::TypeDirectory {
578 rm_stack.push(child);
579 has_child_dir = true;
580 } else {
581 // we can carry on safely if the file is already gone
582 // (eg: deleted by someone else since readdir)
583 match unlink(&child) {
584 Ok(()) => (),
585 Err(ref e) if e.kind == io::FileNotFound => (),
586 Err(e) => return Err(e)
587 }
588 }
589 }
590
591 // if no subdir was found, let's pop and delete
592 if !has_child_dir {
593 match rmdir(&rm_stack.pop().unwrap()) {
594 Ok(()) => (),
595 Err(ref e) if e.kind == io::FileNotFound => (),
596 Err(e) => return Err(e)
597 }
598 }
599 }
600
601 Ok(())
602 }
603
604 /// Changes the timestamps for a file's last modification and access time.
605 /// The file at the path specified will have its last access time set to
606 /// `atime` and its modification time set to `mtime`. The times specified should
607 /// be in milliseconds.
608 // FIXME(#10301) these arguments should not be u64
609 pub fn change_file_times(path: &Path, atime: u64, mtime: u64) -> IoResult<()> {
610 LocalIo::maybe_raise(|io| io.fs_utime(&path.to_c_str(), atime, mtime))
611 }
612
613 impl Reader for File {
614 fn read(&mut self, buf: &mut [u8]) -> IoResult<uint> {
615 match self.fd.read(buf) {
616 Ok(read) => {
617 self.last_nread = read;
618 match read {
619 0 => Err(io::standard_error(io::EndOfFile)),
620 _ => Ok(read as uint)
621 }
622 },
623 Err(e) => Err(e),
624 }
625 }
626 }
627
628 impl Writer for File {
629 fn write(&mut self, buf: &[u8]) -> IoResult<()> { self.fd.write(buf) }
630 }
631
632 impl Seek for File {
633 fn tell(&self) -> IoResult<u64> {
634 self.fd.tell()
635 }
636
637 fn seek(&mut self, pos: i64, style: SeekStyle) -> IoResult<()> {
638 match self.fd.seek(pos, style) {
639 Ok(_) => {
640 // successful seek resets EOF indicator
641 self.last_nread = -1;
642 Ok(())
643 }
644 Err(e) => Err(e),
645 }
646 }
647 }
648
649 impl path::Path {
650 /// Get information on the file, directory, etc at this path.
651 ///
652 /// Consult the `fs::stat` documentation for more info.
653 ///
654 /// This call preserves identical runtime/error semantics with `file::stat`.
655 pub fn stat(&self) -> IoResult<FileStat> { stat(self) }
656
657 /// Get information on the file, directory, etc at this path, not following
658 /// symlinks.
659 ///
660 /// Consult the `fs::lstat` documentation for more info.
661 ///
662 /// This call preserves identical runtime/error semantics with `file::lstat`.
663 pub fn lstat(&self) -> IoResult<FileStat> { lstat(self) }
664
665 /// Boolean value indicator whether the underlying file exists on the local
666 /// filesystem. Returns false in exactly the cases where `fs::stat` fails.
667 pub fn exists(&self) -> bool {
668 self.stat().is_ok()
669 }
670
671 /// Whether the underlying implementation (be it a file path, or something
672 /// else) points at a "regular file" on the FS. Will return false for paths
673 /// to non-existent locations or directories or other non-regular files
674 /// (named pipes, etc). Follows links when making this determination.
675 pub fn is_file(&self) -> bool {
676 match self.stat() {
677 Ok(s) => s.kind == io::TypeFile,
678 Err(..) => false
679 }
680 }
681
682 /// Whether the underlying implementation (be it a file path, or something
683 /// else) is pointing at a directory in the underlying FS. Will return
684 /// false for paths to non-existent locations or if the item is not a
685 /// directory (eg files, named pipes, etc). Follows links when making this
686 /// determination.
687 pub fn is_dir(&self) -> bool {
688 match self.stat() {
689 Ok(s) => s.kind == io::TypeDirectory,
690 Err(..) => false
691 }
692 }
693 }
694
695 #[cfg(test)]
696 #[allow(unused_imports)]
697 mod test {
698 use prelude::*;
699 use io::{SeekSet, SeekCur, SeekEnd, Read, Open, ReadWrite};
700 use io;
701 use str;
702 use io::fs::{File, rmdir, mkdir, readdir, rmdir_recursive,
703 mkdir_recursive, copy, unlink, stat, symlink, link,
704 readlink, chmod, lstat, change_file_times};
705 use path::Path;
706 use io;
707 use ops::Drop;
708 use str::StrSlice;
709
710 macro_rules! check( ($e:expr) => (
711 match $e {
712 Ok(t) => t,
713 Err(e) => fail!("{} failed with: {}", stringify!($e), e),
714 }
715 ) )
716
717 struct TempDir(Path);
718
719 impl TempDir {
720 fn join(&self, path: &str) -> Path {
721 let TempDir(ref p) = *self;
722 p.join(path)
723 }
724
725 fn path<'a>(&'a self) -> &'a Path {
726 let TempDir(ref p) = *self;
727 p
728 }
729 }
730
731 impl Drop for TempDir {
732 fn drop(&mut self) {
733 // Gee, seeing how we're testing the fs module I sure hope that we
734 // at least implement this correctly!
735 let TempDir(ref p) = *self;
736 check!(io::fs::rmdir_recursive(p));
737 }
738 }
739
740 pub fn tmpdir() -> TempDir {
741 use os;
742 use rand;
743 let ret = os::tmpdir().join(format!("rust-{}", rand::random::<u32>()));
744 check!(io::fs::mkdir(&ret, io::UserRWX));
745 TempDir(ret)
746 }
747
748 iotest!(fn file_test_io_smoke_test() {
749 let message = "it's alright. have a good time";
750 let tmpdir = tmpdir();
751 let filename = &tmpdir.join("file_rt_io_file_test.txt");
752 {
753 let mut write_stream = File::open_mode(filename, Open, ReadWrite);
754 check!(write_stream.write(message.as_bytes()));
755 }
756 {
757 let mut read_stream = File::open_mode(filename, Open, Read);
758 let mut read_buf = [0, .. 1028];
759 let read_str = match check!(read_stream.read(read_buf)) {
760 -1|0 => fail!("shouldn't happen"),
761 n => str::from_utf8(read_buf.slice_to(n).to_owned()).unwrap().to_owned()
762 };
763 assert_eq!(read_str, message.to_owned());
764 }
765 check!(unlink(filename));
766 })
767
768 iotest!(fn invalid_path_raises() {
769 let tmpdir = tmpdir();
770 let filename = &tmpdir.join("file_that_does_not_exist.txt");
771 let result = File::open_mode(filename, Open, Read);
772 assert!(result.is_err());
773 })
774
775 iotest!(fn file_test_iounlinking_invalid_path_should_raise_condition() {
776 let tmpdir = tmpdir();
777 let filename = &tmpdir.join("file_another_file_that_does_not_exist.txt");
778 assert!(unlink(filename).is_err());
779 })
780
781 iotest!(fn file_test_io_non_positional_read() {
782 let message: &str = "ten-four";
783 let mut read_mem = [0, .. 8];
784 let tmpdir = tmpdir();
785 let filename = &tmpdir.join("file_rt_io_file_test_positional.txt");
786 {
787 let mut rw_stream = File::open_mode(filename, Open, ReadWrite);
788 check!(rw_stream.write(message.as_bytes()));
789 }
790 {
791 let mut read_stream = File::open_mode(filename, Open, Read);
792 {
793 let read_buf = read_mem.mut_slice(0, 4);
794 check!(read_stream.read(read_buf));
795 }
796 {
797 let read_buf = read_mem.mut_slice(4, 8);
798 check!(read_stream.read(read_buf));
799 }
800 }
801 check!(unlink(filename));
802 let read_str = str::from_utf8(read_mem).unwrap();
803 assert_eq!(read_str, message);
804 })
805
806 iotest!(fn file_test_io_seek_and_tell_smoke_test() {
807 let message = "ten-four";
808 let mut read_mem = [0, .. 4];
809 let set_cursor = 4 as u64;
810 let mut tell_pos_pre_read;
811 let mut tell_pos_post_read;
812 let tmpdir = tmpdir();
813 let filename = &tmpdir.join("file_rt_io_file_test_seeking.txt");
814 {
815 let mut rw_stream = File::open_mode(filename, Open, ReadWrite);
816 check!(rw_stream.write(message.as_bytes()));
817 }
818 {
819 let mut read_stream = File::open_mode(filename, Open, Read);
820 check!(read_stream.seek(set_cursor as i64, SeekSet));
821 tell_pos_pre_read = check!(read_stream.tell());
822 check!(read_stream.read(read_mem));
823 tell_pos_post_read = check!(read_stream.tell());
824 }
825 check!(unlink(filename));
826 let read_str = str::from_utf8(read_mem).unwrap();
827 assert_eq!(read_str, message.slice(4, 8));
828 assert_eq!(tell_pos_pre_read, set_cursor);
829 assert_eq!(tell_pos_post_read, message.len() as u64);
830 })
831
832 iotest!(fn file_test_io_seek_and_write() {
833 let initial_msg = "food-is-yummy";
834 let overwrite_msg = "-the-bar!!";
835 let final_msg = "foo-the-bar!!";
836 let seek_idx = 3;
837 let mut read_mem = [0, .. 13];
838 let tmpdir = tmpdir();
839 let filename = &tmpdir.join("file_rt_io_file_test_seek_and_write.txt");
840 {
841 let mut rw_stream = File::open_mode(filename, Open, ReadWrite);
842 check!(rw_stream.write(initial_msg.as_bytes()));
843 check!(rw_stream.seek(seek_idx as i64, SeekSet));
844 check!(rw_stream.write(overwrite_msg.as_bytes()));
845 }
846 {
847 let mut read_stream = File::open_mode(filename, Open, Read);
848 check!(read_stream.read(read_mem));
849 }
850 check!(unlink(filename));
851 let read_str = str::from_utf8(read_mem).unwrap();
852 assert!(read_str == final_msg.to_owned());
853 })
854
855 iotest!(fn file_test_io_seek_shakedown() {
856 use std::str; // 01234567890123
857 let initial_msg = "qwer-asdf-zxcv";
858 let chunk_one: &str = "qwer";
859 let chunk_two: &str = "asdf";
860 let chunk_three: &str = "zxcv";
861 let mut read_mem = [0, .. 4];
862 let tmpdir = tmpdir();
863 let filename = &tmpdir.join("file_rt_io_file_test_seek_shakedown.txt");
864 {
865 let mut rw_stream = File::open_mode(filename, Open, ReadWrite);
866 check!(rw_stream.write(initial_msg.as_bytes()));
867 }
868 {
869 let mut read_stream = File::open_mode(filename, Open, Read);
870
871 check!(read_stream.seek(-4, SeekEnd));
872 check!(read_stream.read(read_mem));
873 assert_eq!(str::from_utf8(read_mem).unwrap(), chunk_three);
874
875 check!(read_stream.seek(-9, SeekCur));
876 check!(read_stream.read(read_mem));
877 assert_eq!(str::from_utf8(read_mem).unwrap(), chunk_two);
878
879 check!(read_stream.seek(0, SeekSet));
880 check!(read_stream.read(read_mem));
881 assert_eq!(str::from_utf8(read_mem).unwrap(), chunk_one);
882 }
883 check!(unlink(filename));
884 })
885
886 iotest!(fn file_test_stat_is_correct_on_is_file() {
887 let tmpdir = tmpdir();
888 let filename = &tmpdir.join("file_stat_correct_on_is_file.txt");
889 {
890 let mut fs = File::open_mode(filename, Open, ReadWrite);
891 let msg = "hw";
892 fs.write(msg.as_bytes()).unwrap();
893 }
894 let stat_res_fn = check!(stat(filename));
895 assert_eq!(stat_res_fn.kind, io::TypeFile);
896 let stat_res_meth = check!(filename.stat());
897 assert_eq!(stat_res_meth.kind, io::TypeFile);
898 check!(unlink(filename));
899 })
900
901 iotest!(fn file_test_stat_is_correct_on_is_dir() {
902 let tmpdir = tmpdir();
903 let filename = &tmpdir.join("file_stat_correct_on_is_dir");
904 check!(mkdir(filename, io::UserRWX));
905 let stat_res_fn = check!(stat(filename));
906 assert!(stat_res_fn.kind == io::TypeDirectory);
907 let stat_res_meth = check!(filename.stat());
908 assert!(stat_res_meth.kind == io::TypeDirectory);
909 check!(rmdir(filename));
910 })
911
912 iotest!(fn file_test_fileinfo_false_when_checking_is_file_on_a_directory() {
913 let tmpdir = tmpdir();
914 let dir = &tmpdir.join("fileinfo_false_on_dir");
915 check!(mkdir(dir, io::UserRWX));
916 assert!(dir.is_file() == false);
917 check!(rmdir(dir));
918 })
919
920 iotest!(fn file_test_fileinfo_check_exists_before_and_after_file_creation() {
921 let tmpdir = tmpdir();
922 let file = &tmpdir.join("fileinfo_check_exists_b_and_a.txt");
923 check!(File::create(file).write(bytes!("foo")));
924 assert!(file.exists());
925 check!(unlink(file));
926 assert!(!file.exists());
927 })
928
929 iotest!(fn file_test_directoryinfo_check_exists_before_and_after_mkdir() {
930 let tmpdir = tmpdir();
931 let dir = &tmpdir.join("before_and_after_dir");
932 assert!(!dir.exists());
933 check!(mkdir(dir, io::UserRWX));
934 assert!(dir.exists());
935 assert!(dir.is_dir());
936 check!(rmdir(dir));
937 assert!(!dir.exists());
938 })
939
940 iotest!(fn file_test_directoryinfo_readdir() {
941 use std::str;
942 let tmpdir = tmpdir();
943 let dir = &tmpdir.join("di_readdir");
944 check!(mkdir(dir, io::UserRWX));
945 let prefix = "foo";
946 for n in range(0,3) {
947 let f = dir.join(format!("{}.txt", n));
948 let mut w = check!(File::create(&f));
949 let msg_str = (prefix + n.to_str().to_owned()).to_owned();
950 let msg = msg_str.as_bytes();
951 check!(w.write(msg));
952 }
953 let files = check!(readdir(dir));
954 let mut mem = [0u8, .. 4];
955 for f in files.iter() {
956 {
957 let n = f.filestem_str();
958 check!(File::open(f).read(mem));
959 let read_str = str::from_utf8(mem).unwrap();
960 let expected = match n {
961 None|Some("") => fail!("really shouldn't happen.."),
962 Some(n) => prefix+n
963 };
964 assert_eq!(expected.as_slice(), read_str);
965 }
966 check!(unlink(f));
967 }
968 check!(rmdir(dir));
969 })
970
971 iotest!(fn file_test_walk_dir() {
972 let tmpdir = tmpdir();
973 let dir = &tmpdir.join("walk_dir");
974 check!(mkdir(dir, io::UserRWX));
975
976 let dir1 = &dir.join("01/02/03");
977 check!(mkdir_recursive(dir1, io::UserRWX));
978 check!(File::create(&dir1.join("04")));
979
980 let dir2 = &dir.join("11/12/13");
981 check!(mkdir_recursive(dir2, io::UserRWX));
982 check!(File::create(&dir2.join("14")));
983
984 let mut files = check!(walk_dir(dir));
985 let mut cur = [0u8, .. 2];
986 for f in files {
987 let stem = f.filestem_str().unwrap();
988 let root = stem[0] - ('0' as u8);
989 let name = stem[1] - ('0' as u8);
990 assert!(cur[root as uint] < name);
991 cur[root as uint] = name;
992 }
993
994 check!(rmdir_recursive(dir));
995 })
996
997 iotest!(fn recursive_mkdir() {
998 let tmpdir = tmpdir();
999 let dir = tmpdir.join("d1/d2");
1000 check!(mkdir_recursive(&dir, io::UserRWX));
1001 assert!(dir.is_dir())
1002 })
1003
1004 iotest!(fn recursive_mkdir_slash() {
1005 check!(mkdir_recursive(&Path::new("/"), io::UserRWX));
1006 })
1007
1008 // FIXME(#12795) depends on lstat to work on windows
1009 #[cfg(not(windows))]
1010 iotest!(fn recursive_rmdir() {
1011 let tmpdir = tmpdir();
1012 let d1 = tmpdir.join("d1");
1013 let dt = d1.join("t");
1014 let dtt = dt.join("t");
1015 let d2 = tmpdir.join("d2");
1016 let canary = d2.join("do_not_delete");
1017 check!(mkdir_recursive(&dtt, io::UserRWX));
1018 check!(mkdir_recursive(&d2, io::UserRWX));
1019 check!(File::create(&canary).write(bytes!("foo")));
1020 check!(symlink(&d2, &dt.join("d2")));
1021 check!(rmdir_recursive(&d1));
1022
1023 assert!(!d1.is_dir());
1024 assert!(canary.exists());
1025 })
1026
1027 iotest!(fn unicode_path_is_dir() {
1028 assert!(Path::new(".").is_dir());
1029 assert!(!Path::new("test/stdtest/fs.rs").is_dir());
1030
1031 let tmpdir = tmpdir();
1032
1033 let mut dirpath = tmpdir.path().clone();
1034 dirpath.push(format!("test-ê°ä¸ã¼ä½ 好"));
1035 check!(mkdir(&dirpath, io::UserRWX));
1036 assert!(dirpath.is_dir());
1037
1038 let mut filepath = dirpath;
1039 filepath.push("unicode-file-\uac00\u4e00\u30fc\u4f60\u597d.rs");
1040 check!(File::create(&filepath)); // ignore return; touch only
1041 assert!(!filepath.is_dir());
1042 assert!(filepath.exists());
1043 })
1044
1045 iotest!(fn unicode_path_exists() {
1046 assert!(Path::new(".").exists());
1047 assert!(!Path::new("test/nonexistent-bogus-path").exists());
1048
1049 let tmpdir = tmpdir();
1050 let unicode = tmpdir.path();
1051 let unicode = unicode.join(format!("test-ê°ä¸ã¼åè§"));
1052 check!(mkdir(&unicode, io::UserRWX));
1053 assert!(unicode.exists());
1054 assert!(!Path::new("test/unicode-bogus-path-ê°ä¸ã¼åè§").exists());
1055 })
1056
1057 iotest!(fn copy_file_does_not_exist() {
1058 let from = Path::new("test/nonexistent-bogus-path");
1059 let to = Path::new("test/other-bogus-path");
1060 match copy(&from, &to) {
1061 Ok(..) => fail!(),
1062 Err(..) => {
1063 assert!(!from.exists());
1064 assert!(!to.exists());
1065 }
1066 }
1067 })
1068
1069 iotest!(fn copy_file_ok() {
1070 let tmpdir = tmpdir();
1071 let input = tmpdir.join("in.txt");
1072 let out = tmpdir.join("out.txt");
1073
1074 check!(File::create(&input).write(bytes!("hello")));
1075 check!(copy(&input, &out));
1076 let contents = check!(File::open(&out).read_to_end());
1077 assert_eq!(contents.as_slice(), bytes!("hello"));
1078
1079 assert_eq!(check!(input.stat()).perm, check!(out.stat()).perm);
1080 })
1081
1082 iotest!(fn copy_file_dst_dir() {
1083 let tmpdir = tmpdir();
1084 let out = tmpdir.join("out");
1085
1086 check!(File::create(&out));
1087 match copy(&out, tmpdir.path()) {
1088 Ok(..) => fail!(), Err(..) => {}
1089 }
1090 })
1091
1092 iotest!(fn copy_file_dst_exists() {
1093 let tmpdir = tmpdir();
1094 let input = tmpdir.join("in");
1095 let output = tmpdir.join("out");
1096
1097 check!(File::create(&input).write("foo".as_bytes()));
1098 check!(File::create(&output).write("bar".as_bytes()));
1099 check!(copy(&input, &output));
1100
1101 assert_eq!(check!(File::open(&output).read_to_end()),
1102 (Vec::from_slice(bytes!("foo"))));
1103 })
1104
1105 iotest!(fn copy_file_src_dir() {
1106 let tmpdir = tmpdir();
1107 let out = tmpdir.join("out");
1108
1109 match copy(tmpdir.path(), &out) {
1110 Ok(..) => fail!(), Err(..) => {}
1111 }
1112 assert!(!out.exists());
1113 })
1114
1115 iotest!(fn copy_file_preserves_perm_bits() {
1116 let tmpdir = tmpdir();
1117 let input = tmpdir.join("in.txt");
1118 let out = tmpdir.join("out.txt");
1119
1120 check!(File::create(&input));
1121 check!(chmod(&input, io::UserRead));
1122 check!(copy(&input, &out));
1123 assert!(!check!(out.stat()).perm.intersects(io::UserWrite));
1124
1125 check!(chmod(&input, io::UserFile));
1126 check!(chmod(&out, io::UserFile));
1127 })
1128
1129 #[cfg(not(windows))] // FIXME(#10264) operation not permitted?
1130 iotest!(fn symlinks_work() {
1131 let tmpdir = tmpdir();
1132 let input = tmpdir.join("in.txt");
1133 let out = tmpdir.join("out.txt");
1134
1135 check!(File::create(&input).write("foobar".as_bytes()));
1136 check!(symlink(&input, &out));
1137 if cfg!(not(windows)) {
1138 assert_eq!(check!(lstat(&out)).kind, io::TypeSymlink);
1139 assert_eq!(check!(out.lstat()).kind, io::TypeSymlink);
1140 }
1141 assert_eq!(check!(stat(&out)).size, check!(stat(&input)).size);
1142 assert_eq!(check!(File::open(&out).read_to_end()),
1143 (Vec::from_slice(bytes!("foobar"))));
1144 })
1145
1146 #[cfg(not(windows))] // apparently windows doesn't like symlinks
1147 iotest!(fn symlink_noexist() {
1148 let tmpdir = tmpdir();
1149 // symlinks can point to things that don't exist
1150 check!(symlink(&tmpdir.join("foo"), &tmpdir.join("bar")));
1151 assert!(check!(readlink(&tmpdir.join("bar"))) == tmpdir.join("foo"));
1152 })
1153
1154 iotest!(fn readlink_not_symlink() {
1155 let tmpdir = tmpdir();
1156 match readlink(tmpdir.path()) {
1157 Ok(..) => fail!("wanted a failure"),
1158 Err(..) => {}
1159 }
1160 })
1161
1162 iotest!(fn links_work() {
1163 let tmpdir = tmpdir();
1164 let input = tmpdir.join("in.txt");
1165 let out = tmpdir.join("out.txt");
1166
1167 check!(File::create(&input).write("foobar".as_bytes()));
1168 check!(link(&input, &out));
1169 if cfg!(not(windows)) {
1170 assert_eq!(check!(lstat(&out)).kind, io::TypeFile);
1171 assert_eq!(check!(out.lstat()).kind, io::TypeFile);
1172 assert_eq!(check!(stat(&out)).unstable.nlink, 2);
1173 assert_eq!(check!(out.stat()).unstable.nlink, 2);
1174 }
1175 assert_eq!(check!(stat(&out)).size, check!(stat(&input)).size);
1176 assert_eq!(check!(stat(&out)).size, check!(input.stat()).size);
1177 assert_eq!(check!(File::open(&out).read_to_end()),
1178 (Vec::from_slice(bytes!("foobar"))));
1179
1180 // can't link to yourself
1181 match link(&input, &input) {
1182 Ok(..) => fail!("wanted a failure"),
1183 Err(..) => {}
1184 }
1185 // can't link to something that doesn't exist
1186 match link(&tmpdir.join("foo"), &tmpdir.join("bar")) {
1187 Ok(..) => fail!("wanted a failure"),
1188 Err(..) => {}
1189 }
1190 })
1191
1192 iotest!(fn chmod_works() {
1193 let tmpdir = tmpdir();
1194 let file = tmpdir.join("in.txt");
1195
1196 check!(File::create(&file));
1197 assert!(check!(stat(&file)).perm.contains(io::UserWrite));
1198 check!(chmod(&file, io::UserRead));
1199 assert!(!check!(stat(&file)).perm.contains(io::UserWrite));
1200
1201 match chmod(&tmpdir.join("foo"), io::UserRWX) {
1202 Ok(..) => fail!("wanted a failure"),
1203 Err(..) => {}
1204 }
1205
1206 check!(chmod(&file, io::UserFile));
1207 })
1208
1209 iotest!(fn sync_doesnt_kill_anything() {
1210 let tmpdir = tmpdir();
1211 let path = tmpdir.join("in.txt");
1212
1213 let mut file = check!(File::open_mode(&path, io::Open, io::ReadWrite));
1214 check!(file.fsync());
1215 check!(file.datasync());
1216 check!(file.write(bytes!("foo")));
1217 check!(file.fsync());
1218 check!(file.datasync());
1219 drop(file);
1220 })
1221
1222 iotest!(fn truncate_works() {
1223 let tmpdir = tmpdir();
1224 let path = tmpdir.join("in.txt");
1225
1226 let mut file = check!(File::open_mode(&path, io::Open, io::ReadWrite));
1227 check!(file.write(bytes!("foo")));
1228 check!(file.fsync());
1229
1230 // Do some simple things with truncation
1231 assert_eq!(check!(stat(&path)).size, 3);
1232 check!(file.truncate(10));
1233 assert_eq!(check!(stat(&path)).size, 10);
1234 check!(file.write(bytes!("bar")));
1235 check!(file.fsync());
1236 assert_eq!(check!(stat(&path)).size, 10);
1237 assert_eq!(check!(File::open(&path).read_to_end()),
1238 (Vec::from_slice(bytes!("foobar", 0, 0, 0, 0))));
1239
1240 // Truncate to a smaller length, don't seek, and then write something.
1241 // Ensure that the intermediate zeroes are all filled in (we're seeked
1242 // past the end of the file).
1243 check!(file.truncate(2));
1244 assert_eq!(check!(stat(&path)).size, 2);
1245 check!(file.write(bytes!("wut")));
1246 check!(file.fsync());
1247 assert_eq!(check!(stat(&path)).size, 9);
1248 assert_eq!(check!(File::open(&path).read_to_end()),
1249 (Vec::from_slice(bytes!("fo", 0, 0, 0, 0, "wut"))));
1250 drop(file);
1251 })
1252
1253 iotest!(fn open_flavors() {
1254 let tmpdir = tmpdir();
1255
1256 match File::open_mode(&tmpdir.join("a"), io::Open, io::Read) {
1257 Ok(..) => fail!(), Err(..) => {}
1258 }
1259
1260 // Perform each one twice to make sure that it succeeds the second time
1261 // (where the file exists)
1262 check!(File::open_mode(&tmpdir.join("b"), io::Open, io::Write));
1263 assert!(tmpdir.join("b").exists());
1264 check!(File::open_mode(&tmpdir.join("b"), io::Open, io::Write));
1265
1266 check!(File::open_mode(&tmpdir.join("c"), io::Open, io::ReadWrite));
1267 assert!(tmpdir.join("c").exists());
1268 check!(File::open_mode(&tmpdir.join("c"), io::Open, io::ReadWrite));
1269
1270 check!(File::open_mode(&tmpdir.join("d"), io::Append, io::Write));
1271 assert!(tmpdir.join("d").exists());
1272 check!(File::open_mode(&tmpdir.join("d"), io::Append, io::Write));
1273
1274 check!(File::open_mode(&tmpdir.join("e"), io::Append, io::ReadWrite));
1275 assert!(tmpdir.join("e").exists());
1276 check!(File::open_mode(&tmpdir.join("e"), io::Append, io::ReadWrite));
1277
1278 check!(File::open_mode(&tmpdir.join("f"), io::Truncate, io::Write));
1279 assert!(tmpdir.join("f").exists());
1280 check!(File::open_mode(&tmpdir.join("f"), io::Truncate, io::Write));
1281
1282 check!(File::open_mode(&tmpdir.join("g"), io::Truncate, io::ReadWrite));
1283 assert!(tmpdir.join("g").exists());
1284 check!(File::open_mode(&tmpdir.join("g"), io::Truncate, io::ReadWrite));
1285
1286 check!(File::create(&tmpdir.join("h")).write("foo".as_bytes()));
1287 check!(File::open_mode(&tmpdir.join("h"), io::Open, io::Read));
1288 {
1289 let mut f = check!(File::open_mode(&tmpdir.join("h"), io::Open,
1290 io::Read));
1291 match f.write("wut".as_bytes()) {
1292 Ok(..) => fail!(), Err(..) => {}
1293 }
1294 }
1295 assert!(check!(stat(&tmpdir.join("h"))).size == 3,
1296 "write/stat failed");
1297 {
1298 let mut f = check!(File::open_mode(&tmpdir.join("h"), io::Append,
1299 io::Write));
1300 check!(f.write("bar".as_bytes()));
1301 }
1302 assert!(check!(stat(&tmpdir.join("h"))).size == 6,
1303 "append didn't append");
1304 {
1305 let mut f = check!(File::open_mode(&tmpdir.join("h"), io::Truncate,
1306 io::Write));
1307 check!(f.write("bar".as_bytes()));
1308 }
1309 assert!(check!(stat(&tmpdir.join("h"))).size == 3,
1310 "truncate didn't truncate");
1311 })
1312
1313 #[test]
1314 fn utime() {
1315 let tmpdir = tmpdir();
1316 let path = tmpdir.join("a");
1317 check!(File::create(&path));
1318
1319 check!(change_file_times(&path, 1000, 2000));
1320 assert_eq!(check!(path.stat()).accessed, 1000);
1321 assert_eq!(check!(path.stat()).modified, 2000);
1322 }
1323
1324 #[test]
1325 fn utime_noexist() {
1326 let tmpdir = tmpdir();
1327
1328 match change_file_times(&tmpdir.join("a"), 100, 200) {
1329 Ok(..) => fail!(),
1330 Err(..) => {}
1331 }
1332 }
1333
1334 iotest!(fn binary_file() {
1335 use rand::{StdRng, Rng};
1336
1337 let mut bytes = [0, ..1024];
1338 StdRng::new().ok().unwrap().fill_bytes(bytes);
1339
1340 let tmpdir = tmpdir();
1341
1342 check!(File::create(&tmpdir.join("test")).write(bytes));
1343 let actual = check!(File::open(&tmpdir.join("test")).read_to_end());
1344 assert!(actual.as_slice() == bytes);
1345 })
1346 }
libstd/io/fs.rs:80:25-80:25 -struct- definition:
/// `File::open_mode()`.
pub struct File {
fd: Box<RtioFileStream:Send>,
references:- 8130: io.fs_open(&path.to_c_str(), mode, access).map(|fd| {
131: File {
132: path: path.clone(),
--
152: /// ```
153: pub fn open(path: &Path) -> IoResult<File> {
154: File::open_mode(path, Open, Read)
--
632: impl Seek for File {
633: fn tell(&self) -> IoResult<u64> {
libstd/io/fs.rs:482:9-482:9 -fn- definition:
/// file
pub fn readdir(path: &Path) -> IoResult<Vec<Path>> {
LocalIo::maybe_raise(|io| {
references:- 3493: pub fn walk_dir(path: &Path) -> IoResult<Directories> {
494: Ok(Directories { stack: try!(readdir(path)) })
495: }
--
506: if path.is_dir() {
507: match readdir(&path) {
508: Ok(dirs) => { self.stack.push_all_move(dirs); }
--
564: while !rm_stack.is_empty() {
565: let children = try!(readdir(rm_stack.last().unwrap()));
566: let mut has_child_dir = false;
libstd/io/fs.rs:427:72-427:72 -fn- definition:
/// directory at the provided path, or if the directory already exists.
pub fn mkdir(path: &Path, mode: FilePermission) -> IoResult<()> {
LocalIo::maybe_raise(|io| io.fs_mkdir(&path.to_c_str(), mode))
references:- 2libstd/io/tempfile.rs:
48: let p = tmpdir.join(filename);
49: match fs::mkdir(&p, io::UserRWX) {
50: Err(..) => {}
libstd/io/fs.rs:
539: match mkdir(&curpath, mode) {
540: Err(mkdir_err) => {
libstd/io/fs.rs:278:15-278:15 -fn- definition:
/// See `stat`
pub fn lstat(path: &Path) -> IoResult<FileStat> {
LocalIo::maybe_raise(|io| {
references:- 2662: /// This call preserves identical runtime/error semantics with `file::lstat`.
663: pub fn lstat(&self) -> IoResult<FileStat> { lstat(self) }
libstd/io/fs.rs:497:45-497:45 -struct- definition:
/// An iterator which walks over a directory
pub struct Directories {
stack: Vec<Path>,
references:- 3493: pub fn walk_dir(path: &Path) -> IoResult<Directories> {
494: Ok(Directories { stack: try!(readdir(path)) })
495: }
--
502: impl Iterator<Path> for Directories {
503: fn next(&mut self) -> Option<Path> {
libstd/io/fs.rs:264:37-264:37 -fn- definition:
/// filesystem at the provided path.
pub fn stat(path: &Path) -> IoResult<FileStat> {
LocalIo::maybe_raise(|io| {
references:- 3572: let child_type = match cfg!(windows) {
573: true => try!(stat(&child)).kind,
574: false => try!(lstat(&child)).kind
--
654: /// This call preserves identical runtime/error semantics with `file::stat`.
655: pub fn stat(&self) -> IoResult<FileStat> { stat(self) }