1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
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.
11 //! Filesystem manipulation operations.
13 //! This module contains basic methods to manipulate the contents of the local
14 //! filesystem. All methods in this module represent cross-platform filesystem
15 //! operations. Extra platform-specific functionality can be found in the
16 //! extension traits of `std::os::$platform`.
18 #![stable(feature = "rust1", since = "1.0.0")]
22 use io::{self, SeekFrom, Seek, Read, Write};
23 use path::{Path, PathBuf};
24 use sys::fs as fs_imp;
25 use sys_common::{AsInnerMut, FromInner, AsInner, IntoInner};
29 /// A reference to an open file on the filesystem.
31 /// An instance of a `File` can be read and/or written depending on what options
32 /// it was opened with. Files also implement `Seek` to alter the logical cursor
33 /// that the file contains internally.
38 /// use std::io::prelude::*;
39 /// use std::fs::File;
41 /// # fn foo() -> std::io::Result<()> {
42 /// let mut f = try!(File::create("foo.txt"));
43 /// try!(f.write_all(b"Hello, world!"));
45 /// let mut f = try!(File::open("foo.txt"));
46 /// let mut s = String::new();
47 /// try!(f.read_to_string(&mut s));
48 /// assert_eq!(s, "Hello, world!");
52 #[stable(feature = "rust1", since = "1.0.0")]
57 /// Metadata information about a file.
59 /// This structure is returned from the `metadata` function or method and
60 /// represents known metadata about a file such as its permissions, size,
61 /// modification times, etc.
62 #[stable(feature = "rust1", since = "1.0.0")]
64 pub struct Metadata(fs_imp::FileAttr);
66 /// Iterator over the entries in a directory.
68 /// This iterator is returned from the `read_dir` function of this module and
69 /// will yield instances of `io::Result<DirEntry>`. Through a `DirEntry`
70 /// information like the entry's path and possibly other metadata can be
75 /// This `io::Result` will be an `Err` if there's some sort of intermittent
76 /// IO error during iteration.
77 #[stable(feature = "rust1", since = "1.0.0")]
78 pub struct ReadDir(fs_imp::ReadDir);
80 /// Entries returned by the `ReadDir` iterator.
82 /// An instance of `DirEntry` represents an entry inside of a directory on the
83 /// filesystem. Each entry can be inspected via methods to learn about the full
84 /// path or possibly other metadata through per-platform extension traits.
85 #[stable(feature = "rust1", since = "1.0.0")]
86 pub struct DirEntry(fs_imp::DirEntry);
88 /// Options and flags which can be used to configure how a file is opened.
90 /// This builder exposes the ability to configure how a `File` is opened and
91 /// what operations are permitted on the open file. The `File::open` and
92 /// `File::create` methods are aliases for commonly used options using this
95 /// Generally speaking, when using `OpenOptions`, you'll first call `new()`,
96 /// then chain calls to methods to set each option, then call `open()`, passing
97 /// the path of the file you're trying to open. This will give you a
98 /// [`io::Result`][result] with a [`File`][file] inside that you can further
101 /// [result]: ../io/type.Result.html
102 /// [file]: struct.File.html
106 /// Opening a file to read:
109 /// use std::fs::OpenOptions;
111 /// let file = OpenOptions::new().read(true).open("foo.txt");
114 /// Opening a file for both reading and writing, as well as creating it if it
118 /// use std::fs::OpenOptions;
120 /// let file = OpenOptions::new()
124 /// .open("foo.txt");
127 #[stable(feature = "rust1", since = "1.0.0")]
128 pub struct OpenOptions(fs_imp::OpenOptions);
130 /// Representation of the various permissions on a file.
132 /// This module only currently provides one bit of information, `readonly`,
133 /// which is exposed on all currently supported platforms. Unix-specific
134 /// functionality, such as mode bits, is available through the
135 /// `os::unix::PermissionsExt` trait.
136 #[derive(Clone, PartialEq, Eq, Debug)]
137 #[stable(feature = "rust1", since = "1.0.0")]
138 pub struct Permissions(fs_imp::FilePermissions);
140 /// An structure representing a type of file with accessors for each file type.
141 #[stable(feature = "file_type", since = "1.1.0")]
142 #[derive(Copy, Clone, PartialEq, Eq, Hash)]
143 pub struct FileType(fs_imp::FileType);
145 /// A builder used to create directories in various manners.
147 /// This builder also supports platform-specific options.
148 #[stable(feature = "dir_builder", since = "1.6.0")]
149 pub struct DirBuilder {
150 inner: fs_imp::DirBuilder,
155 /// Attempts to open a file in read-only mode.
157 /// See the `OpenOptions::open` method for more details.
161 /// This function will return an error if `path` does not already exist.
162 /// Other errors may also be returned according to `OpenOptions::open`.
167 /// use std::fs::File;
169 /// # fn foo() -> std::io::Result<()> {
170 /// let mut f = try!(File::open("foo.txt"));
174 #[stable(feature = "rust1", since = "1.0.0")]
175 pub fn open<P: AsRef<Path>>(path: P) -> io::Result<File> {
176 OpenOptions::new().read(true).open(path.as_ref())
179 /// Opens a file in write-only mode.
181 /// This function will create a file if it does not exist,
182 /// and will truncate it if it does.
184 /// See the `OpenOptions::open` function for more details.
189 /// use std::fs::File;
191 /// # fn foo() -> std::io::Result<()> {
192 /// let mut f = try!(File::create("foo.txt"));
196 #[stable(feature = "rust1", since = "1.0.0")]
197 pub fn create<P: AsRef<Path>>(path: P) -> io::Result<File> {
198 OpenOptions::new().write(true).create(true).truncate(true).open(path.as_ref())
201 /// Attempts to sync all OS-internal metadata to disk.
203 /// This function will attempt to ensure that all in-core data reaches the
204 /// filesystem before returning.
209 /// use std::fs::File;
210 /// use std::io::prelude::*;
212 /// # fn foo() -> std::io::Result<()> {
213 /// let mut f = try!(File::create("foo.txt"));
214 /// try!(f.write_all(b"Hello, world!"));
216 /// try!(f.sync_all());
220 #[stable(feature = "rust1", since = "1.0.0")]
221 pub fn sync_all(&self) -> io::Result<()> {
225 /// This function is similar to `sync_all`, except that it may not
226 /// synchronize file metadata to the filesystem.
228 /// This is intended for use cases that must synchronize content, but don't
229 /// need the metadata on disk. The goal of this method is to reduce disk
232 /// Note that some platforms may simply implement this in terms of
238 /// use std::fs::File;
239 /// use std::io::prelude::*;
241 /// # fn foo() -> std::io::Result<()> {
242 /// let mut f = try!(File::create("foo.txt"));
243 /// try!(f.write_all(b"Hello, world!"));
245 /// try!(f.sync_data());
249 #[stable(feature = "rust1", since = "1.0.0")]
250 pub fn sync_data(&self) -> io::Result<()> {
251 self.inner.datasync()
254 /// Truncates or extends the underlying file, updating the size of
255 /// this file to become `size`.
257 /// If the `size` is less than the current file's size, then the file will
258 /// be shrunk. If it is greater than the current file's size, then the file
259 /// will be extended to `size` and have all of the intermediate data filled
264 /// This function will return an error if the file is not opened for writing.
269 /// use std::fs::File;
271 /// # fn foo() -> std::io::Result<()> {
272 /// let mut f = try!(File::create("foo.txt"));
273 /// try!(f.set_len(10));
277 #[stable(feature = "rust1", since = "1.0.0")]
278 pub fn set_len(&self, size: u64) -> io::Result<()> {
279 self.inner.truncate(size)
282 /// Queries metadata about the underlying file.
287 /// use std::fs::File;
289 /// # fn foo() -> std::io::Result<()> {
290 /// let mut f = try!(File::open("foo.txt"));
291 /// let metadata = try!(f.metadata());
295 #[stable(feature = "rust1", since = "1.0.0")]
296 pub fn metadata(&self) -> io::Result<Metadata> {
297 self.inner.file_attr().map(Metadata)
300 /// Creates a new independently owned handle to the underlying file.
302 /// The returned `File` is a reference to the same state that this object
303 /// references. Both handles will read and write with the same cursor
305 #[unstable(feature = "file_try_clone", reason = "newly added", issue = "31405")]
306 pub fn try_clone(&self) -> io::Result<File> {
308 inner: try!(self.inner.duplicate())
313 impl AsInner<fs_imp::File> for File {
314 fn as_inner(&self) -> &fs_imp::File { &self.inner }
316 impl FromInner<fs_imp::File> for File {
317 fn from_inner(f: fs_imp::File) -> File {
321 impl IntoInner<fs_imp::File> for File {
322 fn into_inner(self) -> fs_imp::File {
327 #[stable(feature = "rust1", since = "1.0.0")]
328 impl fmt::Debug for File {
329 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
334 #[stable(feature = "rust1", since = "1.0.0")]
336 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
339 fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
340 self.inner.read_to_end(buf)
343 #[stable(feature = "rust1", since = "1.0.0")]
344 impl Write for File {
345 fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
346 self.inner.write(buf)
348 fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
350 #[stable(feature = "rust1", since = "1.0.0")]
352 fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
356 #[stable(feature = "rust1", since = "1.0.0")]
357 impl<'a> Read for &'a File {
358 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
361 fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
362 self.inner.read_to_end(buf)
365 #[stable(feature = "rust1", since = "1.0.0")]
366 impl<'a> Write for &'a File {
367 fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
368 self.inner.write(buf)
370 fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
372 #[stable(feature = "rust1", since = "1.0.0")]
373 impl<'a> Seek for &'a File {
374 fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
380 /// Creates a blank new set of options ready for configuration.
382 /// All options are initially set to `false`.
387 /// use std::fs::OpenOptions;
389 /// let mut options = OpenOptions::new();
390 /// let file = options.read(true).open("foo.txt");
392 #[stable(feature = "rust1", since = "1.0.0")]
393 pub fn new() -> OpenOptions {
394 OpenOptions(fs_imp::OpenOptions::new())
397 /// Sets the option for read access.
399 /// This option, when true, will indicate that the file should be
400 /// `read`-able if opened.
405 /// use std::fs::OpenOptions;
407 /// let file = OpenOptions::new().read(true).open("foo.txt");
409 #[stable(feature = "rust1", since = "1.0.0")]
410 pub fn read(&mut self, read: bool) -> &mut OpenOptions {
411 self.0.read(read); self
414 /// Sets the option for write access.
416 /// This option, when true, will indicate that the file should be
417 /// `write`-able if opened.
419 /// If the file already exists, any write calls on it will overwrite its
420 /// contents, without truncating it.
425 /// use std::fs::OpenOptions;
427 /// let file = OpenOptions::new().write(true).open("foo.txt");
429 #[stable(feature = "rust1", since = "1.0.0")]
430 pub fn write(&mut self, write: bool) -> &mut OpenOptions {
431 self.0.write(write); self
434 /// Sets the option for the append mode.
436 /// This option, when true, means that writes will append to a file instead
437 /// of overwriting previous contents.
438 /// Note that setting `.write(true).append(true)` has the same effect as
439 /// setting only `.append(true)`.
441 /// For most filesystems, the operating system guarantees that all writes are
442 /// atomic: no writes get mangled because another process writes at the same
445 /// One maybe obvious note when using append-mode: make sure that all data
446 /// that belongs together is written to the file in one operation. This
447 /// can be done by concatenating strings before passing them to `write()`,
448 /// or using a buffered writer (with a buffer of adequate size),
449 /// and calling `flush()` when the message is complete.
451 /// If a file is opened with both read and append access, beware that after
452 /// opening, and after every write, the position for reading may be set at the
453 /// end of the file. So, before writing, save the current position (using
454 /// `seek(SeekFrom::Current(0))`, and restore it before the next read.
459 /// use std::fs::OpenOptions;
461 /// let file = OpenOptions::new().append(true).open("foo.txt");
463 #[stable(feature = "rust1", since = "1.0.0")]
464 pub fn append(&mut self, append: bool) -> &mut OpenOptions {
465 self.0.append(append); self
468 /// Sets the option for truncating a previous file.
470 /// If a file is successfully opened with this option set it will truncate
471 /// the file to 0 length if it already exists.
473 /// The file must be opened with write access for truncate to work.
478 /// use std::fs::OpenOptions;
480 /// let file = OpenOptions::new().write(true).truncate(true).open("foo.txt");
482 #[stable(feature = "rust1", since = "1.0.0")]
483 pub fn truncate(&mut self, truncate: bool) -> &mut OpenOptions {
484 self.0.truncate(truncate); self
487 /// Sets the option for creating a new file.
489 /// This option indicates whether a new file will be created if the file
490 /// does not yet already exist.
492 /// In order for the file to be created, `write` or `append` access must
498 /// use std::fs::OpenOptions;
500 /// let file = OpenOptions::new().write(true).create(true).open("foo.txt");
502 #[stable(feature = "rust1", since = "1.0.0")]
503 pub fn create(&mut self, create: bool) -> &mut OpenOptions {
504 self.0.create(create); self
507 /// Sets the option to always create a new file.
509 /// This option indicates whether a new file will be created.
510 /// No file is allowed to exist at the target location, also no (dangling)
513 /// This option is useful because it as atomic. Otherwise between checking
514 /// whether a file exists and creating a new one, the file may have been
515 /// created by another process (a TOCTOU race condition / attack).
517 /// If `.create_new(true)` is set, `.create()` and `.truncate()` are
520 /// The file must be opened with write or append access in order to create
526 /// #![feature(expand_open_options)]
527 /// use std::fs::OpenOptions;
529 /// let file = OpenOptions::new().write(true)
530 /// .create_new(true)
531 /// .open("foo.txt");
533 #[unstable(feature = "expand_open_options",
534 reason = "recently added",
536 pub fn create_new(&mut self, create_new: bool) -> &mut OpenOptions {
537 self.0.create_new(create_new); self
540 /// Opens a file at `path` with the options specified by `self`.
544 /// This function will return an error under a number of different
545 /// circumstances, to include but not limited to:
547 /// * Opening a file that does not exist without setting `create` or
549 /// * Attempting to open a file with access that the user lacks
551 /// * Filesystem-level errors (full disk, etc)
552 /// * Invalid combinations of open options (truncate without write access,
553 /// no access mode set, etc)
558 /// use std::fs::OpenOptions;
560 /// let file = OpenOptions::new().open("foo.txt");
562 #[stable(feature = "rust1", since = "1.0.0")]
563 pub fn open<P: AsRef<Path>>(&self, path: P) -> io::Result<File> {
564 self._open(path.as_ref())
567 fn _open(&self, path: &Path) -> io::Result<File> {
568 let inner = try!(fs_imp::File::open(path, &self.0));
569 Ok(File { inner: inner })
573 impl AsInnerMut<fs_imp::OpenOptions> for OpenOptions {
574 fn as_inner_mut(&mut self) -> &mut fs_imp::OpenOptions { &mut self.0 }
578 /// Returns the file type for this metadata.
579 #[stable(feature = "file_type", since = "1.1.0")]
580 pub fn file_type(&self) -> FileType {
581 FileType(self.0.file_type())
584 /// Returns whether this metadata is for a directory.
589 /// # fn foo() -> std::io::Result<()> {
592 /// let metadata = try!(fs::metadata("foo.txt"));
594 /// assert!(!metadata.is_dir());
598 #[stable(feature = "rust1", since = "1.0.0")]
599 pub fn is_dir(&self) -> bool { self.file_type().is_dir() }
601 /// Returns whether this metadata is for a regular file.
606 /// # fn foo() -> std::io::Result<()> {
609 /// let metadata = try!(fs::metadata("foo.txt"));
611 /// assert!(metadata.is_file());
615 #[stable(feature = "rust1", since = "1.0.0")]
616 pub fn is_file(&self) -> bool { self.file_type().is_file() }
618 /// Returns the size of the file, in bytes, this metadata is for.
623 /// # fn foo() -> std::io::Result<()> {
626 /// let metadata = try!(fs::metadata("foo.txt"));
628 /// assert_eq!(0, metadata.len());
632 #[stable(feature = "rust1", since = "1.0.0")]
633 pub fn len(&self) -> u64 { self.0.size() }
635 /// Returns the permissions of the file this metadata is for.
640 /// # fn foo() -> std::io::Result<()> {
643 /// let metadata = try!(fs::metadata("foo.txt"));
645 /// assert!(!metadata.permissions().readonly());
649 #[stable(feature = "rust1", since = "1.0.0")]
650 pub fn permissions(&self) -> Permissions {
651 Permissions(self.0.perm())
654 /// Returns the last modification time listed in this metadata.
656 /// The returned value corresponds to the `mtime` field of `stat` on Unix
657 /// platforms and the `ftLastWriteTime` field on Windows platforms.
661 /// This field may not be available on all platforms, and will return an
662 /// `Err` on platforms where it is not available.
663 #[unstable(feature = "fs_time", issue = "31399")]
664 pub fn modified(&self) -> io::Result<SystemTime> {
665 self.0.modified().map(FromInner::from_inner)
668 /// Returns the last access time of this metadata.
670 /// The returned value corresponds to the `atime` field of `stat` on Unix
671 /// platforms and the `ftLastAccessTime` field on Windows platforms.
673 /// Note that not all platforms will keep this field update in a file's
674 /// metadata, for example Windows has an option to disable updating this
675 /// time when files are accessed and Linux similarly has `noatime`.
679 /// This field may not be available on all platforms, and will return an
680 /// `Err` on platforms where it is not available.
681 #[unstable(feature = "fs_time", issue = "31399")]
682 pub fn accessed(&self) -> io::Result<SystemTime> {
683 self.0.accessed().map(FromInner::from_inner)
686 /// Returns the creation time listed in the this metadata.
688 /// The returned value corresponds to the `birthtime` field of `stat` on
689 /// Unix platforms and the `ftCreationTime` field on Windows platforms.
693 /// This field may not be available on all platforms, and will return an
694 /// `Err` on platforms where it is not available.
695 #[unstable(feature = "fs_time", issue = "31399")]
696 pub fn created(&self) -> io::Result<SystemTime> {
697 self.0.created().map(FromInner::from_inner)
701 impl AsInner<fs_imp::FileAttr> for Metadata {
702 fn as_inner(&self) -> &fs_imp::FileAttr { &self.0 }
706 /// Returns whether these permissions describe a readonly file.
711 /// use std::fs::File;
713 /// # fn foo() -> std::io::Result<()> {
714 /// let mut f = try!(File::create("foo.txt"));
715 /// let metadata = try!(f.metadata());
717 /// assert_eq!(false, metadata.permissions().readonly());
721 #[stable(feature = "rust1", since = "1.0.0")]
722 pub fn readonly(&self) -> bool { self.0.readonly() }
724 /// Modifies the readonly flag for this set of permissions.
726 /// This operation does **not** modify the filesystem. To modify the
727 /// filesystem use the `fs::set_permissions` function.
732 /// use std::fs::File;
734 /// # fn foo() -> std::io::Result<()> {
735 /// let f = try!(File::create("foo.txt"));
736 /// let metadata = try!(f.metadata());
737 /// let mut permissions = metadata.permissions();
739 /// permissions.set_readonly(true);
741 /// // filesystem doesn't change
742 /// assert_eq!(false, metadata.permissions().readonly());
744 /// // just this particular `permissions`.
745 /// assert_eq!(true, permissions.readonly());
749 #[stable(feature = "rust1", since = "1.0.0")]
750 pub fn set_readonly(&mut self, readonly: bool) {
751 self.0.set_readonly(readonly)
756 /// Test whether this file type represents a directory.
757 #[stable(feature = "file_type", since = "1.1.0")]
758 pub fn is_dir(&self) -> bool { self.0.is_dir() }
760 /// Test whether this file type represents a regular file.
761 #[stable(feature = "file_type", since = "1.1.0")]
762 pub fn is_file(&self) -> bool { self.0.is_file() }
764 /// Test whether this file type represents a symbolic link.
765 #[stable(feature = "file_type", since = "1.1.0")]
766 pub fn is_symlink(&self) -> bool { self.0.is_symlink() }
769 impl AsInner<fs_imp::FileType> for FileType {
770 fn as_inner(&self) -> &fs_imp::FileType { &self.0 }
773 impl FromInner<fs_imp::FilePermissions> for Permissions {
774 fn from_inner(f: fs_imp::FilePermissions) -> Permissions {
779 impl AsInner<fs_imp::FilePermissions> for Permissions {
780 fn as_inner(&self) -> &fs_imp::FilePermissions { &self.0 }
783 #[stable(feature = "rust1", since = "1.0.0")]
784 impl Iterator for ReadDir {
785 type Item = io::Result<DirEntry>;
787 fn next(&mut self) -> Option<io::Result<DirEntry>> {
788 self.0.next().map(|entry| entry.map(DirEntry))
793 /// Returns the full path to the file that this entry represents.
795 /// The full path is created by joining the original path to `read_dir` or
796 /// `walk_dir` with the filename of this entry.
802 /// # fn foo() -> std::io::Result<()> {
803 /// for entry in try!(fs::read_dir(".")) {
804 /// let dir = try!(entry);
805 /// println!("{:?}", dir.path());
811 /// This prints output like:
816 /// "./hello_world.rs"
819 /// The exact text, of course, depends on what files you have in `.`.
820 #[stable(feature = "rust1", since = "1.0.0")]
821 pub fn path(&self) -> PathBuf { self.0.path() }
823 /// Return the metadata for the file that this entry points at.
825 /// This function will not traverse symlinks if this entry points at a
828 /// # Platform-specific behavior
830 /// On Windows this function is cheap to call (no extra system calls
831 /// needed), but on Unix platforms this function is the equivalent of
832 /// calling `symlink_metadata` on the path.
833 #[stable(feature = "dir_entry_ext", since = "1.1.0")]
834 pub fn metadata(&self) -> io::Result<Metadata> {
835 self.0.metadata().map(Metadata)
838 /// Return the file type for the file that this entry points at.
840 /// This function will not traverse symlinks if this entry points at a
843 /// # Platform-specific behavior
845 /// On Windows and most Unix platforms this function is free (no extra
846 /// system calls needed), but some Unix platforms may require the equivalent
847 /// call to `symlink_metadata` to learn about the target file type.
848 #[stable(feature = "dir_entry_ext", since = "1.1.0")]
849 pub fn file_type(&self) -> io::Result<FileType> {
850 self.0.file_type().map(FileType)
853 /// Returns the bare file name of this directory entry without any other
854 /// leading path component.
855 #[stable(feature = "dir_entry_ext", since = "1.1.0")]
856 pub fn file_name(&self) -> OsString {
861 impl AsInner<fs_imp::DirEntry> for DirEntry {
862 fn as_inner(&self) -> &fs_imp::DirEntry { &self.0 }
865 /// Removes a file from the filesystem.
867 /// Note that there is no
868 /// guarantee that the file is immediately deleted (e.g. depending on
869 /// platform, other open file descriptors may prevent immediate removal).
871 /// # Platform-specific behavior
873 /// This function currently corresponds to the `unlink` function on Unix
874 /// and the `DeleteFile` function on Windows.
875 /// Note that, this [may change in the future][changes].
876 /// [changes]: ../io/index.html#platform-specific-behavior
880 /// This function will return an error in the following situations, but is not
881 /// limited to just these cases:
883 /// * `path` points to a directory.
884 /// * The user lacks permissions to remove the file.
891 /// # fn foo() -> std::io::Result<()> {
892 /// try!(fs::remove_file("a.txt"));
896 #[stable(feature = "rust1", since = "1.0.0")]
897 pub fn remove_file<P: AsRef<Path>>(path: P) -> io::Result<()> {
898 fs_imp::unlink(path.as_ref())
901 /// Given a path, query the file system to get information about a file,
904 /// This function will traverse symbolic links to query information about the
905 /// destination file.
907 /// # Platform-specific behavior
909 /// This function currently corresponds to the `stat` function on Unix
910 /// and the `GetFileAttributesEx` function on Windows.
911 /// Note that, this [may change in the future][changes].
912 /// [changes]: ../io/index.html#platform-specific-behavior
916 /// This function will return an error in the following situations, but is not
917 /// limited to just these cases:
919 /// * The user lacks permissions to perform `metadata` call on `path`.
920 /// * `path` does not exist.
925 /// # fn foo() -> std::io::Result<()> {
928 /// let attr = try!(fs::metadata("/some/file/path.txt"));
929 /// // inspect attr ...
933 #[stable(feature = "rust1", since = "1.0.0")]
934 pub fn metadata<P: AsRef<Path>>(path: P) -> io::Result<Metadata> {
935 fs_imp::stat(path.as_ref()).map(Metadata)
938 /// Query the metadata about a file without following symlinks.
940 /// # Platform-specific behavior
942 /// This function currently corresponds to the `lstat` function on Unix
943 /// and the `GetFileAttributesEx` function on Windows.
944 /// Note that, this [may change in the future][changes].
945 /// [changes]: ../io/index.html#platform-specific-behavior
949 /// This function will return an error in the following situations, but is not
950 /// limited to just these cases:
952 /// * The user lacks permissions to perform `metadata` call on `path`.
953 /// * `path` does not exist.
958 /// # fn foo() -> std::io::Result<()> {
961 /// let attr = try!(fs::symlink_metadata("/some/file/path.txt"));
962 /// // inspect attr ...
966 #[stable(feature = "symlink_metadata", since = "1.1.0")]
967 pub fn symlink_metadata<P: AsRef<Path>>(path: P) -> io::Result<Metadata> {
968 fs_imp::lstat(path.as_ref()).map(Metadata)
971 /// Rename a file or directory to a new name.
973 /// This will not work if the new name is on a different mount point.
975 /// # Platform-specific behavior
977 /// This function currently corresponds to the `rename` function on Unix
978 /// and the `MoveFileEx` function with the `MOVEFILE_REPLACE_EXISTING` flag on Windows.
979 /// Note that, this [may change in the future][changes].
980 /// [changes]: ../io/index.html#platform-specific-behavior
984 /// This function will return an error in the following situations, but is not
985 /// limited to just these cases:
987 /// * `from` does not exist.
988 /// * The user lacks permissions to view contents.
989 /// * `from` and `to` are on separate filesystems.
996 /// # fn foo() -> std::io::Result<()> {
997 /// try!(fs::rename("a.txt", "b.txt")); // Rename a.txt to b.txt
1001 #[stable(feature = "rust1", since = "1.0.0")]
1002 pub fn rename<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<()> {
1003 fs_imp::rename(from.as_ref(), to.as_ref())
1006 /// Copies the contents of one file to another. This function will also
1007 /// copy the permission bits of the original file to the destination file.
1009 /// This function will **overwrite** the contents of `to`.
1011 /// Note that if `from` and `to` both point to the same file, then the file
1012 /// will likely get truncated by this operation.
1014 /// On success, the total number of bytes copied is returned.
1016 /// # Platform-specific behavior
1018 /// This function currently corresponds to the `open` function in Unix
1019 /// with `O_RDONLY` for `from` and `O_WRONLY`, `O_CREAT`, and `O_TRUNC` for `to`.
1020 /// `O_CLOEXEC` is set for returned file descriptors.
1021 /// On Windows, this function currently corresponds to `CopyFileEx`.
1022 /// Note that, this [may change in the future][changes].
1023 /// [changes]: ../io/index.html#platform-specific-behavior
1027 /// This function will return an error in the following situations, but is not
1028 /// limited to just these cases:
1030 /// * The `from` path is not a file.
1031 /// * The `from` file does not exist.
1032 /// * The current process does not have the permission rights to access
1033 /// `from` or write `to`.
1040 /// # fn foo() -> std::io::Result<()> {
1041 /// try!(fs::copy("foo.txt", "bar.txt")); // Copy foo.txt to bar.txt
1044 #[stable(feature = "rust1", since = "1.0.0")]
1045 pub fn copy<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<u64> {
1046 fs_imp::copy(from.as_ref(), to.as_ref())
1049 /// Creates a new hard link on the filesystem.
1051 /// The `dst` path will be a link pointing to the `src` path. Note that systems
1052 /// often require these two paths to both be located on the same filesystem.
1054 /// # Platform-specific behavior
1056 /// This function currently corresponds to the `link` function on Unix
1057 /// and the `CreateHardLink` function on Windows.
1058 /// Note that, this [may change in the future][changes].
1059 /// [changes]: ../io/index.html#platform-specific-behavior
1063 /// This function will return an error in the following situations, but is not
1064 /// limited to just these cases:
1066 /// * The `src` path is not a file or doesn't exist.
1073 /// # fn foo() -> std::io::Result<()> {
1074 /// try!(fs::hard_link("a.txt", "b.txt")); // Hard link a.txt to b.txt
1078 #[stable(feature = "rust1", since = "1.0.0")]
1079 pub fn hard_link<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> io::Result<()> {
1080 fs_imp::link(src.as_ref(), dst.as_ref())
1083 /// Creates a new symbolic link on the filesystem.
1085 /// The `dst` path will be a symbolic link pointing to the `src` path.
1086 /// On Windows, this will be a file symlink, not a directory symlink;
1087 /// for this reason, the platform-specific `std::os::unix::fs::symlink`
1088 /// and `std::os::windows::fs::{symlink_file, symlink_dir}` should be
1089 /// used instead to make the intent explicit.
1096 /// # fn foo() -> std::io::Result<()> {
1097 /// try!(fs::soft_link("a.txt", "b.txt"));
1101 #[stable(feature = "rust1", since = "1.0.0")]
1102 #[rustc_deprecated(since = "1.1.0",
1103 reason = "replaced with std::os::unix::fs::symlink and \
1104 std::os::windows::fs::{symlink_file, symlink_dir}")]
1105 pub fn soft_link<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> io::Result<()> {
1106 fs_imp::symlink(src.as_ref(), dst.as_ref())
1109 /// Reads a symbolic link, returning the file that the link points to.
1111 /// # Platform-specific behavior
1113 /// This function currently corresponds to the `readlink` function on Unix
1114 /// and the `CreateFile` function with `FILE_FLAG_OPEN_REPARSE_POINT` and
1115 /// `FILE_FLAG_BACKUP_SEMANTICS` flags on Windows.
1116 /// Note that, this [may change in the future][changes].
1117 /// [changes]: ../io/index.html#platform-specific-behavior
1121 /// This function will return an error in the following situations, but is not
1122 /// limited to just these cases:
1124 /// * `path` is not a symbolic link.
1125 /// * `path` does not exist.
1132 /// # fn foo() -> std::io::Result<()> {
1133 /// let path = try!(fs::read_link("a.txt"));
1137 #[stable(feature = "rust1", since = "1.0.0")]
1138 pub fn read_link<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
1139 fs_imp::readlink(path.as_ref())
1142 /// Returns the canonical form of a path with all intermediate components
1143 /// normalized and symbolic links resolved.
1145 /// # Platform-specific behavior
1147 /// This function currently corresponds to the `realpath` function on Unix
1148 /// and the `CreateFile` and `GetFinalPathNameByHandle` functions on Windows.
1149 /// Note that, this [may change in the future][changes].
1150 /// [changes]: ../io/index.html#platform-specific-behavior
1154 /// This function will return an error in the following situations, but is not
1155 /// limited to just these cases:
1157 /// * `path` does not exist.
1158 /// * A component in path is not a directory.
1165 /// # fn foo() -> std::io::Result<()> {
1166 /// let path = try!(fs::canonicalize("../a/../foo.txt"));
1170 #[stable(feature = "fs_canonicalize", since = "1.5.0")]
1171 pub fn canonicalize<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
1172 fs_imp::canonicalize(path.as_ref())
1175 /// Creates a new, empty directory at the provided path
1177 /// # Platform-specific behavior
1179 /// This function currently corresponds to the `mkdir` function on Unix
1180 /// and the `CreateDirectory` function on Windows.
1181 /// Note that, this [may change in the future][changes].
1182 /// [changes]: ../io/index.html#platform-specific-behavior
1186 /// This function will return an error in the following situations, but is not
1187 /// limited to just these cases:
1189 /// * User lacks permissions to create directory at `path`.
1190 /// * `path` already exists.
1197 /// # fn foo() -> std::io::Result<()> {
1198 /// try!(fs::create_dir("/some/dir"));
1202 #[stable(feature = "rust1", since = "1.0.0")]
1203 pub fn create_dir<P: AsRef<Path>>(path: P) -> io::Result<()> {
1204 DirBuilder::new().create(path.as_ref())
1207 /// Recursively create a directory and all of its parent components if they
1210 /// # Platform-specific behavior
1212 /// This function currently corresponds to the `mkdir` function on Unix
1213 /// and the `CreateDirectory` function on Windows.
1214 /// Note that, this [may change in the future][changes].
1215 /// [changes]: ../io/index.html#platform-specific-behavior
1219 /// This function will return an error in the following situations, but is not
1220 /// limited to just these cases:
1222 /// * If any directory in the path specified by `path`
1223 /// does not already exist and it could not be created otherwise. The specific
1224 /// error conditions for when a directory is being created (after it is
1225 /// determined to not exist) are outlined by `fs::create_dir`.
1232 /// # fn foo() -> std::io::Result<()> {
1233 /// try!(fs::create_dir_all("/some/dir"));
1237 #[stable(feature = "rust1", since = "1.0.0")]
1238 pub fn create_dir_all<P: AsRef<Path>>(path: P) -> io::Result<()> {
1239 DirBuilder::new().recursive(true).create(path.as_ref())
1242 /// Removes an existing, empty directory.
1244 /// # Platform-specific behavior
1246 /// This function currently corresponds to the `rmdir` function on Unix
1247 /// and the `RemoveDirectory` function on Windows.
1248 /// Note that, this [may change in the future][changes].
1249 /// [changes]: ../io/index.html#platform-specific-behavior
1253 /// This function will return an error in the following situations, but is not
1254 /// limited to just these cases:
1256 /// * The user lacks permissions to remove the directory at the provided `path`.
1257 /// * The directory isn't empty.
1264 /// # fn foo() -> std::io::Result<()> {
1265 /// try!(fs::remove_dir("/some/dir"));
1269 #[stable(feature = "rust1", since = "1.0.0")]
1270 pub fn remove_dir<P: AsRef<Path>>(path: P) -> io::Result<()> {
1271 fs_imp::rmdir(path.as_ref())
1274 /// Removes a directory at this path, after removing all its contents. Use
1277 /// This function does **not** follow symbolic links and it will simply remove the
1278 /// symbolic link itself.
1280 /// # Platform-specific behavior
1282 /// This function currently corresponds to `opendir`, `lstat`, `rm` and `rmdir` functions on Unix
1283 /// and the `FindFirstFile`, `GetFileAttributesEx`, `DeleteFile`, and `RemoveDirectory` functions
1285 /// Note that, this [may change in the future][changes].
1286 /// [changes]: ../io/index.html#platform-specific-behavior
1290 /// See `file::remove_file` and `fs::remove_dir`.
1297 /// # fn foo() -> std::io::Result<()> {
1298 /// try!(fs::remove_dir_all("/some/dir"));
1302 #[stable(feature = "rust1", since = "1.0.0")]
1303 pub fn remove_dir_all<P: AsRef<Path>>(path: P) -> io::Result<()> {
1304 fs_imp::remove_dir_all(path.as_ref())
1307 /// Returns an iterator over the entries within a directory.
1309 /// The iterator will yield instances of `io::Result<DirEntry>`. New errors may
1310 /// be encountered after an iterator is initially constructed.
1312 /// # Platform-specific behavior
1314 /// This function currently corresponds to the `opendir` function on Unix
1315 /// and the `FindFirstFile` function on Windows.
1316 /// Note that, this [may change in the future][changes].
1317 /// [changes]: ../io/index.html#platform-specific-behavior
1321 /// This function will return an error in the following situations, but is not
1322 /// limited to just these cases:
1324 /// * The provided `path` doesn't exist.
1325 /// * The process lacks permissions to view the contents.
1326 /// * The `path` points at a non-directory file.
1332 /// use std::fs::{self, DirEntry};
1333 /// use std::path::Path;
1335 /// // one possible implementation of walking a directory only visiting files
1336 /// fn visit_dirs(dir: &Path, cb: &Fn(&DirEntry)) -> io::Result<()> {
1337 /// if try!(fs::metadata(dir)).is_dir() {
1338 /// for entry in try!(fs::read_dir(dir)) {
1339 /// let entry = try!(entry);
1340 /// if try!(fs::metadata(entry.path())).is_dir() {
1341 /// try!(visit_dirs(&entry.path(), cb));
1350 #[stable(feature = "rust1", since = "1.0.0")]
1351 pub fn read_dir<P: AsRef<Path>>(path: P) -> io::Result<ReadDir> {
1352 fs_imp::readdir(path.as_ref()).map(ReadDir)
1355 /// Changes the permissions found on a file or a directory.
1357 /// # Platform-specific behavior
1359 /// This function currently corresponds to the `chmod` function on Unix
1360 /// and the `SetFileAttributes` function on Windows.
1361 /// Note that, this [may change in the future][changes].
1362 /// [changes]: ../io/index.html#platform-specific-behavior
1366 /// This function will return an error in the following situations, but is not
1367 /// limited to just these cases:
1369 /// * `path` does not exist.
1370 /// * The user lacks the permission to change attributes of the file.
1375 /// # fn foo() -> std::io::Result<()> {
1378 /// let mut perms = try!(fs::metadata("foo.txt")).permissions();
1379 /// perms.set_readonly(true);
1380 /// try!(fs::set_permissions("foo.txt", perms));
1384 #[stable(feature = "set_permissions", since = "1.1.0")]
1385 pub fn set_permissions<P: AsRef<Path>>(path: P, perm: Permissions)
1387 fs_imp::set_perm(path.as_ref(), perm.0)
1391 /// Creates a new set of options with default mode/security settings for all
1392 /// platforms and also non-recursive.
1393 #[stable(feature = "dir_builder", since = "1.6.0")]
1394 pub fn new() -> DirBuilder {
1396 inner: fs_imp::DirBuilder::new(),
1401 /// Indicate that directories create should be created recursively, creating
1402 /// all parent directories if they do not exist with the same security and
1403 /// permissions settings.
1405 /// This option defaults to `false`
1406 #[stable(feature = "dir_builder", since = "1.6.0")]
1407 pub fn recursive(&mut self, recursive: bool) -> &mut Self {
1408 self.recursive = recursive;
1412 /// Create the specified directory with the options configured in this
1418 /// use std::fs::{self, DirBuilder};
1420 /// let path = "/tmp/foo/bar/baz";
1421 /// DirBuilder::new()
1422 /// .recursive(true)
1423 /// .create(path).unwrap();
1425 /// assert!(fs::metadata(path).unwrap().is_dir());
1427 #[stable(feature = "dir_builder", since = "1.6.0")]
1428 pub fn create<P: AsRef<Path>>(&self, path: P) -> io::Result<()> {
1429 self._create(path.as_ref())
1432 fn _create(&self, path: &Path) -> io::Result<()> {
1434 self.create_dir_all(path)
1436 self.inner.mkdir(path)
1440 fn create_dir_all(&self, path: &Path) -> io::Result<()> {
1441 if path == Path::new("") || path.is_dir() { return Ok(()) }
1442 if let Some(p) = path.parent() {
1443 try!(self.create_dir_all(p))
1445 self.inner.mkdir(path)
1449 impl AsInnerMut<fs_imp::DirBuilder> for DirBuilder {
1450 fn as_inner_mut(&mut self) -> &mut fs_imp::DirBuilder {
1461 use fs::{self, File, OpenOptions};
1462 use io::{ErrorKind, SeekFrom};
1463 use path::{Path, PathBuf};
1464 use rand::{self, StdRng, Rng};
1468 use os::windows::fs::{symlink_dir, symlink_file};
1470 use sys::fs::symlink_junction;
1472 use os::unix::fs::symlink as symlink_dir;
1474 use os::unix::fs::symlink as symlink_file;
1476 use os::unix::fs::symlink as symlink_junction;
1478 macro_rules! check { ($e:expr) => (
1481 Err(e) => panic!("{} failed with: {}", stringify!($e), e),
1485 macro_rules! error { ($e:expr, $s:expr) => (
1487 Ok(_) => panic!("Unexpected success. Should've been: {:?}", $s),
1488 Err(ref err) => assert!(err.to_string().contains($s),
1489 format!("`{}` did not contain `{}`", err, $s))
1493 pub struct TempDir(PathBuf);
1496 fn join(&self, path: &str) -> PathBuf {
1497 let TempDir(ref p) = *self;
1501 fn path<'a>(&'a self) -> &'a Path {
1502 let TempDir(ref p) = *self;
1507 impl Drop for TempDir {
1508 fn drop(&mut self) {
1509 // Gee, seeing how we're testing the fs module I sure hope that we
1510 // at least implement this correctly!
1511 let TempDir(ref p) = *self;
1512 check!(fs::remove_dir_all(p));
1516 pub fn tmpdir() -> TempDir {
1517 let p = env::temp_dir();
1518 let mut r = rand::thread_rng();
1519 let ret = p.join(&format!("rust-{}", r.next_u32()));
1520 check!(fs::create_dir(&ret));
1524 // Several test fail on windows if the user does not have permission to
1525 // create symlinks (the `SeCreateSymbolicLinkPrivilege`). Instead of
1526 // disabling these test on Windows, use this function to test whether we
1527 // have permission, and return otherwise. This way, we still don't run these
1528 // tests most of the time, but at least we do if the user has the right
1530 pub fn got_symlink_permission(tmpdir: &TempDir) -> bool {
1531 if cfg!(unix) { return true }
1532 let link = tmpdir.join("some_hopefully_unique_link_name");
1534 match symlink_file(r"nonexisting_target", link) {
1537 if err.to_string().contains("A required privilege is not held by the client.") {
1546 fn file_test_io_smoke_test() {
1547 let message = "it's alright. have a good time";
1548 let tmpdir = tmpdir();
1549 let filename = &tmpdir.join("file_rt_io_file_test.txt");
1551 let mut write_stream = check!(File::create(filename));
1552 check!(write_stream.write(message.as_bytes()));
1555 let mut read_stream = check!(File::open(filename));
1556 let mut read_buf = [0; 1028];
1557 let read_str = match check!(read_stream.read(&mut read_buf)) {
1558 0 => panic!("shouldn't happen"),
1559 n => str::from_utf8(&read_buf[..n]).unwrap().to_string()
1561 assert_eq!(read_str, message);
1563 check!(fs::remove_file(filename));
1567 fn invalid_path_raises() {
1568 let tmpdir = tmpdir();
1569 let filename = &tmpdir.join("file_that_does_not_exist.txt");
1570 let result = File::open(filename);
1573 error!(result, "o such file or directory");
1576 error!(result, "The system cannot find the file specified");
1581 fn file_test_iounlinking_invalid_path_should_raise_condition() {
1582 let tmpdir = tmpdir();
1583 let filename = &tmpdir.join("file_another_file_that_does_not_exist.txt");
1585 let result = fs::remove_file(filename);
1588 error!(result, "o such file or directory");
1591 error!(result, "The system cannot find the file specified");
1596 fn file_test_io_non_positional_read() {
1597 let message: &str = "ten-four";
1598 let mut read_mem = [0; 8];
1599 let tmpdir = tmpdir();
1600 let filename = &tmpdir.join("file_rt_io_file_test_positional.txt");
1602 let mut rw_stream = check!(File::create(filename));
1603 check!(rw_stream.write(message.as_bytes()));
1606 let mut read_stream = check!(File::open(filename));
1608 let read_buf = &mut read_mem[0..4];
1609 check!(read_stream.read(read_buf));
1612 let read_buf = &mut read_mem[4..8];
1613 check!(read_stream.read(read_buf));
1616 check!(fs::remove_file(filename));
1617 let read_str = str::from_utf8(&read_mem).unwrap();
1618 assert_eq!(read_str, message);
1622 fn file_test_io_seek_and_tell_smoke_test() {
1623 let message = "ten-four";
1624 let mut read_mem = [0; 4];
1625 let set_cursor = 4 as u64;
1626 let tell_pos_pre_read;
1627 let tell_pos_post_read;
1628 let tmpdir = tmpdir();
1629 let filename = &tmpdir.join("file_rt_io_file_test_seeking.txt");
1631 let mut rw_stream = check!(File::create(filename));
1632 check!(rw_stream.write(message.as_bytes()));
1635 let mut read_stream = check!(File::open(filename));
1636 check!(read_stream.seek(SeekFrom::Start(set_cursor)));
1637 tell_pos_pre_read = check!(read_stream.seek(SeekFrom::Current(0)));
1638 check!(read_stream.read(&mut read_mem));
1639 tell_pos_post_read = check!(read_stream.seek(SeekFrom::Current(0)));
1641 check!(fs::remove_file(filename));
1642 let read_str = str::from_utf8(&read_mem).unwrap();
1643 assert_eq!(read_str, &message[4..8]);
1644 assert_eq!(tell_pos_pre_read, set_cursor);
1645 assert_eq!(tell_pos_post_read, message.len() as u64);
1649 fn file_test_io_seek_and_write() {
1650 let initial_msg = "food-is-yummy";
1651 let overwrite_msg = "-the-bar!!";
1652 let final_msg = "foo-the-bar!!";
1654 let mut read_mem = [0; 13];
1655 let tmpdir = tmpdir();
1656 let filename = &tmpdir.join("file_rt_io_file_test_seek_and_write.txt");
1658 let mut rw_stream = check!(File::create(filename));
1659 check!(rw_stream.write(initial_msg.as_bytes()));
1660 check!(rw_stream.seek(SeekFrom::Start(seek_idx)));
1661 check!(rw_stream.write(overwrite_msg.as_bytes()));
1664 let mut read_stream = check!(File::open(filename));
1665 check!(read_stream.read(&mut read_mem));
1667 check!(fs::remove_file(filename));
1668 let read_str = str::from_utf8(&read_mem).unwrap();
1669 assert!(read_str == final_msg);
1673 fn file_test_io_seek_shakedown() {
1675 let initial_msg = "qwer-asdf-zxcv";
1676 let chunk_one: &str = "qwer";
1677 let chunk_two: &str = "asdf";
1678 let chunk_three: &str = "zxcv";
1679 let mut read_mem = [0; 4];
1680 let tmpdir = tmpdir();
1681 let filename = &tmpdir.join("file_rt_io_file_test_seek_shakedown.txt");
1683 let mut rw_stream = check!(File::create(filename));
1684 check!(rw_stream.write(initial_msg.as_bytes()));
1687 let mut read_stream = check!(File::open(filename));
1689 check!(read_stream.seek(SeekFrom::End(-4)));
1690 check!(read_stream.read(&mut read_mem));
1691 assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_three);
1693 check!(read_stream.seek(SeekFrom::Current(-9)));
1694 check!(read_stream.read(&mut read_mem));
1695 assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_two);
1697 check!(read_stream.seek(SeekFrom::Start(0)));
1698 check!(read_stream.read(&mut read_mem));
1699 assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_one);
1701 check!(fs::remove_file(filename));
1705 fn file_test_stat_is_correct_on_is_file() {
1706 let tmpdir = tmpdir();
1707 let filename = &tmpdir.join("file_stat_correct_on_is_file.txt");
1709 let mut opts = OpenOptions::new();
1710 let mut fs = check!(opts.read(true).write(true)
1711 .create(true).open(filename));
1713 fs.write(msg.as_bytes()).unwrap();
1715 let fstat_res = check!(fs.metadata());
1716 assert!(fstat_res.is_file());
1718 let stat_res_fn = check!(fs::metadata(filename));
1719 assert!(stat_res_fn.is_file());
1720 let stat_res_meth = check!(filename.metadata());
1721 assert!(stat_res_meth.is_file());
1722 check!(fs::remove_file(filename));
1726 fn file_test_stat_is_correct_on_is_dir() {
1727 let tmpdir = tmpdir();
1728 let filename = &tmpdir.join("file_stat_correct_on_is_dir");
1729 check!(fs::create_dir(filename));
1730 let stat_res_fn = check!(fs::metadata(filename));
1731 assert!(stat_res_fn.is_dir());
1732 let stat_res_meth = check!(filename.metadata());
1733 assert!(stat_res_meth.is_dir());
1734 check!(fs::remove_dir(filename));
1738 fn file_test_fileinfo_false_when_checking_is_file_on_a_directory() {
1739 let tmpdir = tmpdir();
1740 let dir = &tmpdir.join("fileinfo_false_on_dir");
1741 check!(fs::create_dir(dir));
1742 assert!(dir.is_file() == false);
1743 check!(fs::remove_dir(dir));
1747 fn file_test_fileinfo_check_exists_before_and_after_file_creation() {
1748 let tmpdir = tmpdir();
1749 let file = &tmpdir.join("fileinfo_check_exists_b_and_a.txt");
1750 check!(check!(File::create(file)).write(b"foo"));
1751 assert!(file.exists());
1752 check!(fs::remove_file(file));
1753 assert!(!file.exists());
1757 fn file_test_directoryinfo_check_exists_before_and_after_mkdir() {
1758 let tmpdir = tmpdir();
1759 let dir = &tmpdir.join("before_and_after_dir");
1760 assert!(!dir.exists());
1761 check!(fs::create_dir(dir));
1762 assert!(dir.exists());
1763 assert!(dir.is_dir());
1764 check!(fs::remove_dir(dir));
1765 assert!(!dir.exists());
1769 fn file_test_directoryinfo_readdir() {
1770 let tmpdir = tmpdir();
1771 let dir = &tmpdir.join("di_readdir");
1772 check!(fs::create_dir(dir));
1775 let f = dir.join(&format!("{}.txt", n));
1776 let mut w = check!(File::create(&f));
1777 let msg_str = format!("{}{}", prefix, n.to_string());
1778 let msg = msg_str.as_bytes();
1779 check!(w.write(msg));
1781 let files = check!(fs::read_dir(dir));
1782 let mut mem = [0; 4];
1784 let f = f.unwrap().path();
1786 let n = f.file_stem().unwrap();
1787 check!(check!(File::open(&f)).read(&mut mem));
1788 let read_str = str::from_utf8(&mem).unwrap();
1789 let expected = format!("{}{}", prefix, n.to_str().unwrap());
1790 assert_eq!(expected, read_str);
1792 check!(fs::remove_file(&f));
1794 check!(fs::remove_dir(dir));
1798 fn mkdir_path_already_exists_error() {
1799 let tmpdir = tmpdir();
1800 let dir = &tmpdir.join("mkdir_error_twice");
1801 check!(fs::create_dir(dir));
1802 let e = fs::create_dir(dir).err().unwrap();
1803 assert_eq!(e.kind(), ErrorKind::AlreadyExists);
1807 fn recursive_mkdir() {
1808 let tmpdir = tmpdir();
1809 let dir = tmpdir.join("d1/d2");
1810 check!(fs::create_dir_all(&dir));
1811 assert!(dir.is_dir())
1815 fn recursive_mkdir_failure() {
1816 let tmpdir = tmpdir();
1817 let dir = tmpdir.join("d1");
1818 let file = dir.join("f1");
1820 check!(fs::create_dir_all(&dir));
1821 check!(File::create(&file));
1823 let result = fs::create_dir_all(&file);
1825 assert!(result.is_err());
1829 fn recursive_mkdir_slash() {
1830 check!(fs::create_dir_all(&Path::new("/")));
1834 fn recursive_rmdir() {
1835 let tmpdir = tmpdir();
1836 let d1 = tmpdir.join("d1");
1837 let dt = d1.join("t");
1838 let dtt = dt.join("t");
1839 let d2 = tmpdir.join("d2");
1840 let canary = d2.join("do_not_delete");
1841 check!(fs::create_dir_all(&dtt));
1842 check!(fs::create_dir_all(&d2));
1843 check!(check!(File::create(&canary)).write(b"foo"));
1844 check!(symlink_junction(&d2, &dt.join("d2")));
1845 let _ = symlink_file(&canary, &d1.join("canary"));
1846 check!(fs::remove_dir_all(&d1));
1848 assert!(!d1.is_dir());
1849 assert!(canary.exists());
1853 fn recursive_rmdir_of_symlink() {
1854 // test we do not recursively delete a symlink but only dirs.
1855 let tmpdir = tmpdir();
1856 let link = tmpdir.join("d1");
1857 let dir = tmpdir.join("d2");
1858 let canary = dir.join("do_not_delete");
1859 check!(fs::create_dir_all(&dir));
1860 check!(check!(File::create(&canary)).write(b"foo"));
1861 check!(symlink_junction(&dir, &link));
1862 check!(fs::remove_dir_all(&link));
1864 assert!(!link.is_dir());
1865 assert!(canary.exists());
1869 // only Windows makes a distinction between file and directory symlinks.
1871 fn recursive_rmdir_of_file_symlink() {
1872 let tmpdir = tmpdir();
1873 if !got_symlink_permission(&tmpdir) { return };
1875 let f1 = tmpdir.join("f1");
1876 let f2 = tmpdir.join("f2");
1877 check!(check!(File::create(&f1)).write(b"foo"));
1878 check!(symlink_file(&f1, &f2));
1879 match fs::remove_dir_all(&f2) {
1880 Ok(..) => panic!("wanted a failure"),
1886 fn unicode_path_is_dir() {
1887 assert!(Path::new(".").is_dir());
1888 assert!(!Path::new("test/stdtest/fs.rs").is_dir());
1890 let tmpdir = tmpdir();
1892 let mut dirpath = tmpdir.path().to_path_buf();
1893 dirpath.push("test-가一ー你好");
1894 check!(fs::create_dir(&dirpath));
1895 assert!(dirpath.is_dir());
1897 let mut filepath = dirpath;
1898 filepath.push("unicode-file-\u{ac00}\u{4e00}\u{30fc}\u{4f60}\u{597d}.rs");
1899 check!(File::create(&filepath)); // ignore return; touch only
1900 assert!(!filepath.is_dir());
1901 assert!(filepath.exists());
1905 fn unicode_path_exists() {
1906 assert!(Path::new(".").exists());
1907 assert!(!Path::new("test/nonexistent-bogus-path").exists());
1909 let tmpdir = tmpdir();
1910 let unicode = tmpdir.path();
1911 let unicode = unicode.join(&format!("test-각丁ー再见"));
1912 check!(fs::create_dir(&unicode));
1913 assert!(unicode.exists());
1914 assert!(!Path::new("test/unicode-bogus-path-각丁ー再见").exists());
1918 fn copy_file_does_not_exist() {
1919 let from = Path::new("test/nonexistent-bogus-path");
1920 let to = Path::new("test/other-bogus-path");
1922 match fs::copy(&from, &to) {
1925 assert!(!from.exists());
1926 assert!(!to.exists());
1932 fn copy_src_does_not_exist() {
1933 let tmpdir = tmpdir();
1934 let from = Path::new("test/nonexistent-bogus-path");
1935 let to = tmpdir.join("out.txt");
1936 check!(check!(File::create(&to)).write(b"hello"));
1937 assert!(fs::copy(&from, &to).is_err());
1938 assert!(!from.exists());
1939 let mut v = Vec::new();
1940 check!(check!(File::open(&to)).read_to_end(&mut v));
1941 assert_eq!(v, b"hello");
1946 let tmpdir = tmpdir();
1947 let input = tmpdir.join("in.txt");
1948 let out = tmpdir.join("out.txt");
1950 check!(check!(File::create(&input)).write(b"hello"));
1951 check!(fs::copy(&input, &out));
1952 let mut v = Vec::new();
1953 check!(check!(File::open(&out)).read_to_end(&mut v));
1954 assert_eq!(v, b"hello");
1956 assert_eq!(check!(input.metadata()).permissions(),
1957 check!(out.metadata()).permissions());
1961 fn copy_file_dst_dir() {
1962 let tmpdir = tmpdir();
1963 let out = tmpdir.join("out");
1965 check!(File::create(&out));
1966 match fs::copy(&*out, tmpdir.path()) {
1967 Ok(..) => panic!(), Err(..) => {}
1972 fn copy_file_dst_exists() {
1973 let tmpdir = tmpdir();
1974 let input = tmpdir.join("in");
1975 let output = tmpdir.join("out");
1977 check!(check!(File::create(&input)).write("foo".as_bytes()));
1978 check!(check!(File::create(&output)).write("bar".as_bytes()));
1979 check!(fs::copy(&input, &output));
1981 let mut v = Vec::new();
1982 check!(check!(File::open(&output)).read_to_end(&mut v));
1983 assert_eq!(v, b"foo".to_vec());
1987 fn copy_file_src_dir() {
1988 let tmpdir = tmpdir();
1989 let out = tmpdir.join("out");
1991 match fs::copy(tmpdir.path(), &out) {
1992 Ok(..) => panic!(), Err(..) => {}
1994 assert!(!out.exists());
1998 fn copy_file_preserves_perm_bits() {
1999 let tmpdir = tmpdir();
2000 let input = tmpdir.join("in.txt");
2001 let out = tmpdir.join("out.txt");
2003 let attr = check!(check!(File::create(&input)).metadata());
2004 let mut p = attr.permissions();
2005 p.set_readonly(true);
2006 check!(fs::set_permissions(&input, p));
2007 check!(fs::copy(&input, &out));
2008 assert!(check!(out.metadata()).permissions().readonly());
2009 check!(fs::set_permissions(&input, attr.permissions()));
2010 check!(fs::set_permissions(&out, attr.permissions()));
2015 fn copy_file_preserves_streams() {
2017 check!(check!(File::create(tmp.join("in.txt:bunny"))).write("carrot".as_bytes()));
2018 assert_eq!(check!(fs::copy(tmp.join("in.txt"), tmp.join("out.txt"))), 6);
2019 assert_eq!(check!(tmp.join("out.txt").metadata()).len(), 0);
2020 let mut v = Vec::new();
2021 check!(check!(File::open(tmp.join("out.txt:bunny"))).read_to_end(&mut v));
2022 assert_eq!(v, b"carrot".to_vec());
2026 fn symlinks_work() {
2027 let tmpdir = tmpdir();
2028 if !got_symlink_permission(&tmpdir) { return };
2030 let input = tmpdir.join("in.txt");
2031 let out = tmpdir.join("out.txt");
2033 check!(check!(File::create(&input)).write("foobar".as_bytes()));
2034 check!(symlink_file(&input, &out));
2035 assert!(check!(out.symlink_metadata()).file_type().is_symlink());
2036 assert_eq!(check!(fs::metadata(&out)).len(),
2037 check!(fs::metadata(&input)).len());
2038 let mut v = Vec::new();
2039 check!(check!(File::open(&out)).read_to_end(&mut v));
2040 assert_eq!(v, b"foobar".to_vec());
2044 fn symlink_noexist() {
2045 // Symlinks can point to things that don't exist
2046 let tmpdir = tmpdir();
2047 if !got_symlink_permission(&tmpdir) { return };
2049 // Use a relative path for testing. Symlinks get normalized by Windows,
2050 // so we may not get the same path back for absolute paths
2051 check!(symlink_file(&"foo", &tmpdir.join("bar")));
2052 assert_eq!(check!(fs::read_link(&tmpdir.join("bar"))).to_str().unwrap(),
2059 // directory symlink
2060 assert_eq!(check!(fs::read_link(r"C:\Users\All Users")).to_str().unwrap(),
2063 assert_eq!(check!(fs::read_link(r"C:\Users\Default User")).to_str().unwrap(),
2064 r"C:\Users\Default");
2065 // junction with special permissions
2066 assert_eq!(check!(fs::read_link(r"C:\Documents and Settings\")).to_str().unwrap(),
2069 let tmpdir = tmpdir();
2070 let link = tmpdir.join("link");
2071 if !got_symlink_permission(&tmpdir) { return };
2072 check!(symlink_file(&"foo", &link));
2073 assert_eq!(check!(fs::read_link(&link)).to_str().unwrap(), "foo");
2077 fn readlink_not_symlink() {
2078 let tmpdir = tmpdir();
2079 match fs::read_link(tmpdir.path()) {
2080 Ok(..) => panic!("wanted a failure"),
2087 let tmpdir = tmpdir();
2088 let input = tmpdir.join("in.txt");
2089 let out = tmpdir.join("out.txt");
2091 check!(check!(File::create(&input)).write("foobar".as_bytes()));
2092 check!(fs::hard_link(&input, &out));
2093 assert_eq!(check!(fs::metadata(&out)).len(),
2094 check!(fs::metadata(&input)).len());
2095 assert_eq!(check!(fs::metadata(&out)).len(),
2096 check!(input.metadata()).len());
2097 let mut v = Vec::new();
2098 check!(check!(File::open(&out)).read_to_end(&mut v));
2099 assert_eq!(v, b"foobar".to_vec());
2101 // can't link to yourself
2102 match fs::hard_link(&input, &input) {
2103 Ok(..) => panic!("wanted a failure"),
2106 // can't link to something that doesn't exist
2107 match fs::hard_link(&tmpdir.join("foo"), &tmpdir.join("bar")) {
2108 Ok(..) => panic!("wanted a failure"),
2115 let tmpdir = tmpdir();
2116 let file = tmpdir.join("in.txt");
2118 check!(File::create(&file));
2119 let attr = check!(fs::metadata(&file));
2120 assert!(!attr.permissions().readonly());
2121 let mut p = attr.permissions();
2122 p.set_readonly(true);
2123 check!(fs::set_permissions(&file, p.clone()));
2124 let attr = check!(fs::metadata(&file));
2125 assert!(attr.permissions().readonly());
2127 match fs::set_permissions(&tmpdir.join("foo"), p.clone()) {
2128 Ok(..) => panic!("wanted an error"),
2132 p.set_readonly(false);
2133 check!(fs::set_permissions(&file, p));
2137 fn sync_doesnt_kill_anything() {
2138 let tmpdir = tmpdir();
2139 let path = tmpdir.join("in.txt");
2141 let mut file = check!(File::create(&path));
2142 check!(file.sync_all());
2143 check!(file.sync_data());
2144 check!(file.write(b"foo"));
2145 check!(file.sync_all());
2146 check!(file.sync_data());
2150 fn truncate_works() {
2151 let tmpdir = tmpdir();
2152 let path = tmpdir.join("in.txt");
2154 let mut file = check!(File::create(&path));
2155 check!(file.write(b"foo"));
2156 check!(file.sync_all());
2158 // Do some simple things with truncation
2159 assert_eq!(check!(file.metadata()).len(), 3);
2160 check!(file.set_len(10));
2161 assert_eq!(check!(file.metadata()).len(), 10);
2162 check!(file.write(b"bar"));
2163 check!(file.sync_all());
2164 assert_eq!(check!(file.metadata()).len(), 10);
2166 let mut v = Vec::new();
2167 check!(check!(File::open(&path)).read_to_end(&mut v));
2168 assert_eq!(v, b"foobar\0\0\0\0".to_vec());
2170 // Truncate to a smaller length, don't seek, and then write something.
2171 // Ensure that the intermediate zeroes are all filled in (we have `seek`ed
2172 // past the end of the file).
2173 check!(file.set_len(2));
2174 assert_eq!(check!(file.metadata()).len(), 2);
2175 check!(file.write(b"wut"));
2176 check!(file.sync_all());
2177 assert_eq!(check!(file.metadata()).len(), 9);
2178 let mut v = Vec::new();
2179 check!(check!(File::open(&path)).read_to_end(&mut v));
2180 assert_eq!(v, b"fo\0\0\0\0wut".to_vec());
2185 use fs::OpenOptions as OO;
2186 fn c<T: Clone>(t: &T) -> T { t.clone() }
2188 let tmpdir = tmpdir();
2190 let mut r = OO::new(); r.read(true);
2191 let mut w = OO::new(); w.write(true);
2192 let mut rw = OO::new(); rw.read(true).write(true);
2193 let mut a = OO::new(); a.append(true);
2194 let mut ra = OO::new(); ra.read(true).append(true);
2196 let invalid_options = if cfg!(windows) { "The parameter is incorrect" }
2197 else { "Invalid argument" };
2199 // Test various combinations of creation modes and access modes.
2202 // creation mode | read | write | read-write | append | read-append |
2203 // :-----------------------|:-----:|:-----:|:----------:|:------:|:-----------:|
2204 // not set (open existing) | X | X | X | X | X |
2205 // create | | X | X | X | X |
2206 // truncate | | X | X | | |
2207 // create and truncate | | X | X | | |
2208 // create_new | | X | X | X | X |
2210 // tested in reverse order, so 'create_new' creates the file, and 'open existing' opens it.
2213 check!(c(&w).create_new(true).open(&tmpdir.join("a")));
2214 check!(c(&w).create(true).truncate(true).open(&tmpdir.join("a")));
2215 check!(c(&w).truncate(true).open(&tmpdir.join("a")));
2216 check!(c(&w).create(true).open(&tmpdir.join("a")));
2217 check!(c(&w).open(&tmpdir.join("a")));
2220 error!(c(&r).create_new(true).open(&tmpdir.join("b")), invalid_options);
2221 error!(c(&r).create(true).truncate(true).open(&tmpdir.join("b")), invalid_options);
2222 error!(c(&r).truncate(true).open(&tmpdir.join("b")), invalid_options);
2223 error!(c(&r).create(true).open(&tmpdir.join("b")), invalid_options);
2224 check!(c(&r).open(&tmpdir.join("a"))); // try opening the file created with write_only
2227 check!(c(&rw).create_new(true).open(&tmpdir.join("c")));
2228 check!(c(&rw).create(true).truncate(true).open(&tmpdir.join("c")));
2229 check!(c(&rw).truncate(true).open(&tmpdir.join("c")));
2230 check!(c(&rw).create(true).open(&tmpdir.join("c")));
2231 check!(c(&rw).open(&tmpdir.join("c")));
2234 check!(c(&a).create_new(true).open(&tmpdir.join("d")));
2235 error!(c(&a).create(true).truncate(true).open(&tmpdir.join("d")), invalid_options);
2236 error!(c(&a).truncate(true).open(&tmpdir.join("d")), invalid_options);
2237 check!(c(&a).create(true).open(&tmpdir.join("d")));
2238 check!(c(&a).open(&tmpdir.join("d")));
2241 check!(c(&ra).create_new(true).open(&tmpdir.join("e")));
2242 error!(c(&ra).create(true).truncate(true).open(&tmpdir.join("e")), invalid_options);
2243 error!(c(&ra).truncate(true).open(&tmpdir.join("e")), invalid_options);
2244 check!(c(&ra).create(true).open(&tmpdir.join("e")));
2245 check!(c(&ra).open(&tmpdir.join("e")));
2247 // Test opening a file without setting an access mode
2248 let mut blank = OO::new();
2249 error!(blank.create(true).open(&tmpdir.join("f")), invalid_options);
2252 check!(check!(File::create(&tmpdir.join("h"))).write("foobar".as_bytes()));
2254 // Test write fails for read-only
2255 check!(r.open(&tmpdir.join("h")));
2257 let mut f = check!(r.open(&tmpdir.join("h")));
2258 assert!(f.write("wut".as_bytes()).is_err());
2261 // Test write overwrites
2263 let mut f = check!(c(&w).open(&tmpdir.join("h")));
2264 check!(f.write("baz".as_bytes()));
2267 let mut f = check!(c(&r).open(&tmpdir.join("h")));
2268 let mut b = vec![0; 6];
2269 check!(f.read(&mut b));
2270 assert_eq!(b, "bazbar".as_bytes());
2273 // Test truncate works
2275 let mut f = check!(c(&w).truncate(true).open(&tmpdir.join("h")));
2276 check!(f.write("foo".as_bytes()));
2278 assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
2280 // Test append works
2281 assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
2283 let mut f = check!(c(&a).open(&tmpdir.join("h")));
2284 check!(f.write("bar".as_bytes()));
2286 assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 6);
2288 // Test .append(true) equals .write(true).append(true)
2290 let mut f = check!(c(&w).append(true).open(&tmpdir.join("h")));
2291 check!(f.write("baz".as_bytes()));
2293 assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 9);
2297 fn _assert_send_sync() {
2298 fn _assert_send_sync<T: Send + Sync>() {}
2299 _assert_send_sync::<OpenOptions>();
2304 let mut bytes = [0; 1024];
2305 StdRng::new().unwrap().fill_bytes(&mut bytes);
2307 let tmpdir = tmpdir();
2309 check!(check!(File::create(&tmpdir.join("test"))).write(&bytes));
2310 let mut v = Vec::new();
2311 check!(check!(File::open(&tmpdir.join("test"))).read_to_end(&mut v));
2312 assert!(v == &bytes[..]);
2316 fn file_try_clone() {
2317 let tmpdir = tmpdir();
2319 let mut f1 = check!(OpenOptions::new()
2323 .open(&tmpdir.join("test")));
2324 let mut f2 = check!(f1.try_clone());
2326 check!(f1.write_all(b"hello world"));
2327 check!(f1.seek(SeekFrom::Start(2)));
2329 let mut buf = vec![];
2330 check!(f2.read_to_end(&mut buf));
2331 assert_eq!(buf, b"llo world");
2334 check!(f1.write_all(b"!"));
2338 #[cfg(not(windows))]
2339 fn unlink_readonly() {
2340 let tmpdir = tmpdir();
2341 let path = tmpdir.join("file");
2342 check!(File::create(&path));
2343 let mut perm = check!(fs::metadata(&path)).permissions();
2344 perm.set_readonly(true);
2345 check!(fs::set_permissions(&path, perm));
2346 check!(fs::remove_file(&path));
2350 fn mkdir_trailing_slash() {
2351 let tmpdir = tmpdir();
2352 let path = tmpdir.join("file");
2353 check!(fs::create_dir_all(&path.join("a/")));
2357 fn canonicalize_works_simple() {
2358 let tmpdir = tmpdir();
2359 let tmpdir = fs::canonicalize(tmpdir.path()).unwrap();
2360 let file = tmpdir.join("test");
2361 File::create(&file).unwrap();
2362 assert_eq!(fs::canonicalize(&file).unwrap(), file);
2366 fn realpath_works() {
2367 let tmpdir = tmpdir();
2368 if !got_symlink_permission(&tmpdir) { return };
2370 let tmpdir = fs::canonicalize(tmpdir.path()).unwrap();
2371 let file = tmpdir.join("test");
2372 let dir = tmpdir.join("test2");
2373 let link = dir.join("link");
2374 let linkdir = tmpdir.join("test3");
2376 File::create(&file).unwrap();
2377 fs::create_dir(&dir).unwrap();
2378 symlink_file(&file, &link).unwrap();
2379 symlink_dir(&dir, &linkdir).unwrap();
2381 assert!(link.symlink_metadata().unwrap().file_type().is_symlink());
2383 assert_eq!(fs::canonicalize(&tmpdir).unwrap(), tmpdir);
2384 assert_eq!(fs::canonicalize(&file).unwrap(), file);
2385 assert_eq!(fs::canonicalize(&link).unwrap(), file);
2386 assert_eq!(fs::canonicalize(&linkdir).unwrap(), dir);
2387 assert_eq!(fs::canonicalize(&linkdir.join("link")).unwrap(), file);
2391 fn realpath_works_tricky() {
2392 let tmpdir = tmpdir();
2393 if !got_symlink_permission(&tmpdir) { return };
2395 let tmpdir = fs::canonicalize(tmpdir.path()).unwrap();
2396 let a = tmpdir.join("a");
2397 let b = a.join("b");
2398 let c = b.join("c");
2399 let d = a.join("d");
2400 let e = d.join("e");
2401 let f = a.join("f");
2403 fs::create_dir_all(&b).unwrap();
2404 fs::create_dir_all(&d).unwrap();
2405 File::create(&f).unwrap();
2406 if cfg!(not(windows)) {
2407 symlink_dir("../d/e", &c).unwrap();
2408 symlink_file("../f", &e).unwrap();
2411 symlink_dir(r"..\d\e", &c).unwrap();
2412 symlink_file(r"..\f", &e).unwrap();
2415 assert_eq!(fs::canonicalize(&c).unwrap(), f);
2416 assert_eq!(fs::canonicalize(&e).unwrap(), f);
2420 fn dir_entry_methods() {
2421 let tmpdir = tmpdir();
2423 fs::create_dir_all(&tmpdir.join("a")).unwrap();
2424 File::create(&tmpdir.join("b")).unwrap();
2426 for file in tmpdir.path().read_dir().unwrap().map(|f| f.unwrap()) {
2427 let fname = file.file_name();
2428 match fname.to_str() {
2430 assert!(file.file_type().unwrap().is_dir());
2431 assert!(file.metadata().unwrap().is_dir());
2434 assert!(file.file_type().unwrap().is_file());
2435 assert!(file.metadata().unwrap().is_file());
2437 f => panic!("unknown file name: {:?}", f),
2443 fn read_dir_not_found() {
2444 let res = fs::read_dir("/path/that/does/not/exist");
2445 assert_eq!(res.err().unwrap().kind(), ErrorKind::NotFound);
2449 fn create_dir_all_with_junctions() {
2450 let tmpdir = tmpdir();
2451 let target = tmpdir.join("target");
2453 let junction = tmpdir.join("junction");
2454 let b = junction.join("a/b");
2456 let link = tmpdir.join("link");
2457 let d = link.join("c/d");
2459 fs::create_dir(&target).unwrap();
2461 check!(symlink_junction(&target, &junction));
2462 check!(fs::create_dir_all(&b));
2463 // the junction itself is not a directory, but `is_dir()` on a Path
2465 assert!(junction.is_dir());
2466 assert!(b.exists());
2468 if !got_symlink_permission(&tmpdir) { return };
2469 check!(symlink_dir(&target, &link));
2470 check!(fs::create_dir_all(&d));
2471 assert!(link.is_dir());
2472 assert!(d.exists());
2476 fn metadata_access_times() {
2477 let tmpdir = tmpdir();
2479 let b = tmpdir.join("b");
2480 File::create(&b).unwrap();
2482 let a = check!(fs::metadata(&tmpdir.path()));
2483 let b = check!(fs::metadata(&b));
2485 assert_eq!(check!(a.accessed()), check!(a.accessed()));
2486 assert_eq!(check!(a.modified()), check!(a.modified()));
2487 assert_eq!(check!(b.accessed()), check!(b.modified()));
2489 if cfg!(target_os = "macos") || cfg!(target_os = "windows") {
2490 check!(a.created());
2491 check!(b.created());