# Struct std::fs::Metadata 1.0.0 [−] [src]

    pub struct Metadata(_);

Metadata information about a file.

This structure is returned from the `metadata` or `symlink_metadata` function or method and represents known metadata about a file such as its permissions, size, modification times, etc.

## Methods

### `impl Metadata`
[src]

#### `pub fn file_type(&self) -> FileType`
1.1.0
[src]

Returns the file type for this metadata.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    println!("{:?}", metadata.file_type());Run

#### `pub fn is_dir(&self) -> bool`
[src]

Returns whether this metadata is for a directory.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    assert!(!metadata.is_dir());Run

#### `pub fn is_file(&self) -> bool`
[src]

Returns whether this metadata is for a regular file.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    assert!(metadata.is_file());Run

#### `pub fn len(&self) -> u64`
[src]

Returns the size of the file, in bytes, this metadata is for.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    assert_eq!(0, metadata.len());Run

#### `pub fn permissions(&self) -> Permissions`
[src]

Returns the permissions of the file this metadata is for.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    assert!(!metadata.permissions().readonly());Run

#### `pub fn modified(&self) -> Result<SystemTime>`
1.10.0
[src]

Returns the last modification time listed in this metadata.

The returned value corresponds to the `mtime` field of `stat` on Unix platforms and the `ftLastWriteTime` field on Windows platforms.

# Errors

This field may not be available on all platforms, and will return an `Err` on platforms where it is not available.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    if let Ok(time) = metadata.modified() {
        println!("{:?}", time);
    } else {
        println!("Not supported on this platform");
    }Run

#### `pub fn accessed(&self) -> Result<SystemTime>`
1.10.0
[src]

Returns the last access time of this metadata.

The returned value corresponds to the `atime` field of `stat` on Unix platforms and the `ftLastAccessTime` field on Windows platforms.

Note that not all platforms will keep this field update in a file's metadata, for example Windows has an option to disable updating this time when files are accessed and Linux similarly has `noatime`.

# Errors

This field may not be available on all platforms, and will return an `Err` on platforms where it is not available.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    if let Ok(time) = metadata.accessed() {
        println!("{:?}", time);
    } else {
        println!("Not supported on this platform");
    }Run

#### `pub fn created(&self) -> Result<SystemTime>`
1.10.0
[src]

Returns the creation time listed in this metadata.

The returned value corresponds to the `birthtime` field of `stat` on Unix platforms and the `ftCreationTime` field on Windows platforms.

# Errors

This field may not be available on all platforms, and will return an `Err` on platforms where it is not available.

# Examples

    use std::fs;

    let metadata = fs::metadata("foo.txt")?;

    if let Ok(time) = metadata.created() {
        println!("{:?}", time);
    } else {
        println!("Not supported on this platform");
    }Run

## Trait Implementations

### `impl Clone for Metadata`
[src]

#### `fn clone(&self) -> Metadata`
[src]

Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`
[src]

Performs copy-assignment from `source`. Read more

### `impl Debug for Metadata`
1.16.0
[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`
[src]

Formats the value using the given formatter. Read more

### `impl MetadataExt for Metadata`
1.1.0
[src]

#### `fn as_raw_stat(&self) -> &stat`
[src]

Deprecated since 1.8.0

: deprecated in favor of the accessor methods of this trait

This is supported on Linux only.

Gain a reference to the underlying `stat` structure which contains the raw information returned by the OS. Read more

#### `fn st_dev(&self) -> u64`
[src]

This is supported on Linux only.

Returns the device ID on which this file resides. Read more

#### `fn st_ino(&self) -> u64`
[src]

This is supported on Linux only.

Returns the inode number. Read more

#### `fn st_mode(&self) -> u32`
[src]

This is supported on Linux only.

Returns the file type and mode. Read more

#### `fn st_nlink(&self) -> u64`
[src]

This is supported on Linux only.

Returns the number of hard links to file. Read more

#### `fn st_uid(&self) -> u32`
[src]

This is supported on Linux only.

Returns the user ID of the file owner. Read more

#### `fn st_gid(&self) -> u32`
[src]

This is supported on Linux only.

Returns the group ID of the file owner. Read more

#### `fn st_rdev(&self) -> u64`
[src]

This is supported on Linux only.

Returns the device ID that this file represents. Only relevant for special file. Read more

#### `fn st_size(&self) -> u64`
[src]

This is supported on Linux only.

Returns the size of the file (if it is a regular file or a symbolic link) in bytes. Read more

#### `fn st_atime(&self) -> i64`
[src]

This is supported on Linux only.

Returns the last access time. Read more

#### `fn st_atime_nsec(&self) -> i64`
[src]

This is supported on Linux only.

Returns the last access time, nano seconds part. Read more

#### `fn st_mtime(&self) -> i64`
[src]

This is supported on Linux only.

Returns the last modification time. Read more

#### `fn st_mtime_nsec(&self) -> i64`
[src]

This is supported on Linux only.

Returns the last modification time, nano seconds part. Read more

#### `fn st_ctime(&self) -> i64`
[src]

This is supported on Linux only.

Returns the last status change time. Read more

#### `fn st_ctime_nsec(&self) -> i64`
[src]

This is supported on Linux only.

Returns the last status change time, nano seconds part. Read more

#### `fn st_blksize(&self) -> u64`
[src]

This is supported on Linux only.

Returns the "preferred" blocksize for efficient filesystem I/O. Read more

#### `fn st_blocks(&self) -> u64`
[src]

This is supported on Linux only.

Returns the number of blocks allocated to the file, 512-byte units. Read more

### `impl MetadataExt for Metadata`
1.1.0
[src]

#### `fn dev(&self) -> u64`
[src]

This is supported on Unix only.

Returns the ID of the device containing the file. Read more

#### `fn ino(&self) -> u64`
[src]

This is supported on Unix only.

Returns the inode number. Read more

#### `fn mode(&self) -> u32`
[src]

This is supported on Unix only.

Returns the rights applied to this file. Read more

#### `fn nlink(&self) -> u64`
[src]

This is supported on Unix only.

Returns the number of hard links pointing to this file. Read more

#### `fn uid(&self) -> u32`
[src]

This is supported on Unix only.

Returns the user ID of the owner of this file. Read more

#### `fn gid(&self) -> u32`
[src]

This is supported on Unix only.

Returns the group ID of the owner of this file. Read more

#### `fn rdev(&self) -> u64`
[src]

This is supported on Unix only.

Returns the device ID of this file (if it is a special one). Read more

#### `fn size(&self) -> u64`
[src]

This is supported on Unix only.

Returns the total size of this file in bytes. Read more

#### `fn atime(&self) -> i64`
[src]

This is supported on Unix only.

Returns the time of the last access to the file. Read more

#### `fn atime_nsec(&self) -> i64`
[src]

This is supported on Unix only.

Returns the time of the last access to the file in nanoseconds. Read more

#### `fn mtime(&self) -> i64`
[src]

This is supported on Unix only.

Returns the time of the last modification of the file. Read more

#### `fn mtime_nsec(&self) -> i64`
[src]

This is supported on Unix only.

Returns the time of the last modification of the file in nanoseconds. Read more

#### `fn ctime(&self) -> i64`
[src]

This is supported on Unix only.

Returns the time of the last status change of the file. Read more

#### `fn ctime_nsec(&self) -> i64`
[src]

This is supported on Unix only.

Returns the time of the last status change of the file in nanoseconds. Read more

#### `fn blksize(&self) -> u64`
[src]

This is supported on Unix only.

Returns the blocksize for filesystem I/O. Read more

#### `fn blocks(&self) -> u64`
[src]

This is supported on Unix only.

Returns the number of blocks allocated to the file, in 512-byte units. Read more

### `impl MetadataExt for Metadata`
1.1.0
[src]

#### `fn file_attributes(&self) -> u32`
[src]

This is supported on Windows only.

Returns the value of the `dwFileAttributes` field of this metadata. Read more

#### `fn creation_time(&self) -> u64`
[src]

This is supported on Windows only.

Returns the value of the `ftCreationTime` field of this metadata. Read more

#### `fn last_access_time(&self) -> u64`
[src]

This is supported on Windows only.

Returns the value of the `ftLastAccessTime` field of this metadata. Read more

#### `fn last_write_time(&self) -> u64`
[src]

This is supported on Windows only.

Returns the value of the `ftLastWriteTime` field of this metadata. Read more

#### `fn file_size(&self) -> u64`
[src]

This is supported on Windows only.

Returns the value of the `nFileSize{High,Low}` fields of this metadata. Read more

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