Struct std::fs::Metadata1.0.0 [] [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
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1.1.0
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Returns the file type for this metadata.

Examples

use std::fs;

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

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

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Returns whether this metadata is for a directory.

Examples

use std::fs;

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

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

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Returns whether this metadata is for a regular file.

Examples

use std::fs;

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

assert!(metadata.is_file());Run

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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

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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

1.10.0
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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

1.10.0
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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

1.10.0
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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
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Returns a copy of the value. Read more

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Performs copy-assignment from source. Read more

impl Debug for Metadata
1.16.0
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Formats the value using the given formatter. Read more

impl MetadataExt for Metadata
1.1.0
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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

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This is supported on Linux only.

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

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This is supported on Linux only.

Returns the inode number. Read more

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This is supported on Linux only.

Returns the file type and mode. Read more

This is supported on Linux only.

Returns the number of hard links to file. Read more

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This is supported on Linux only.

Returns the user ID of the file owner. Read more

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This is supported on Linux only.

Returns the group ID of the file owner. Read more

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This is supported on Linux only.

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

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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

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This is supported on Linux only.

Returns the last access time. Read more

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This is supported on Linux only.

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

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This is supported on Linux only.

Returns the last modification time. Read more

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This is supported on Linux only.

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

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This is supported on Linux only.

Returns the last status change time. Read more

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This is supported on Linux only.

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

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This is supported on Linux only.

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

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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
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This is supported on Unix only.

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

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This is supported on Unix only.

Returns the inode number. Read more

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This is supported on Unix only.

Returns the rights applied to this file. Read more

This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

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

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This is supported on Unix only.

Returns the blocksize for filesystem I/O. Read more

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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
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This is supported on Windows only.

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

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This is supported on Windows only.

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

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This is supported on Windows only.

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

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This is supported on Windows only.

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

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This is supported on Windows only.

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