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.
impl Metadata[src]
pub fn file_type(&self) -> FileType[src]1.1.0
Returns the file type for this metadata.
fn main() -> std::io::Result<()> {
use std::fs;
let metadata = fs::metadata("foo.txt")?;
println!("{:?}", metadata.file_type());
Ok(())
}pub fn is_dir(&self) -> bool[src]
Returns true if this metadata is for a directory. The result is mutually exclusive to the result of Metadata::is_file, and will be false for symlink metadata obtained from symlink_metadata.
fn main() -> std::io::Result<()> {
use std::fs;
let metadata = fs::metadata("foo.txt")?;
assert!(!metadata.is_dir());
Ok(())
}pub fn is_file(&self) -> bool[src]
Returns true if this metadata is for a regular file. The result is mutually exclusive to the result of Metadata::is_dir, and will be false for symlink metadata obtained from symlink_metadata.
When the goal is simply to read from (or write to) the source, the most reliable way to test the source can be read (or written to) is to open it. Only using is_file can break workflows like diff <( prog_a ) on a Unix-like system for example. See File::open or OpenOptions::open for more information.
use std::fs;
fn main() -> std::io::Result<()> {
let metadata = fs::metadata("foo.txt")?;
assert!(metadata.is_file());
Ok(())
}pub fn len(&self) -> u64[src]
Returns the size of the file, in bytes, this metadata is for.
use std::fs;
fn main() -> std::io::Result<()> {
let metadata = fs::metadata("foo.txt")?;
assert_eq!(0, metadata.len());
Ok(())
}pub fn permissions(&self) -> Permissions[src]
Returns the permissions of the file this metadata is for.
use std::fs;
fn main() -> std::io::Result<()> {
let metadata = fs::metadata("foo.txt")?;
assert!(!metadata.permissions().readonly());
Ok(())
}pub fn modified(&self) -> Result<SystemTime>[src]1.10.0
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.
This field may not be available on all platforms, and will return an Err on platforms where it is not available.
use std::fs;
fn main() -> std::io::Result<()> {
let metadata = fs::metadata("foo.txt")?;
if let Ok(time) = metadata.modified() {
println!("{:?}", time);
} else {
println!("Not supported on this platform");
}
Ok(())
}pub fn accessed(&self) -> Result<SystemTime>[src]1.10.0
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.
This field may not be available on all platforms, and will return an Err on platforms where it is not available.
use std::fs;
fn main() -> std::io::Result<()> {
let metadata = fs::metadata("foo.txt")?;
if let Ok(time) = metadata.accessed() {
println!("{:?}", time);
} else {
println!("Not supported on this platform");
}
Ok(())
}pub fn created(&self) -> Result<SystemTime>[src]1.10.0
Returns the creation time listed in this metadata.
The returned value corresponds to the btime field of statx on Linux kernel starting from to 4.11, the birthtime field of stat on other Unix platforms, and the ftCreationTime field on Windows platforms.
This field may not be available on all platforms, and will return an Err on platforms or filesystems where it is not available.
use std::fs;
fn main() -> std::io::Result<()> {
let metadata = fs::metadata("foo.txt")?;
if let Ok(time) = metadata.created() {
println!("{:?}", time);
} else {
println!("Not supported on this platform or filesystem");
}
Ok(())
}impl Clone for Metadata[src]
impl Debug for Metadata[src]1.16.0
impl MetadataExt for Metadata[src]1.1.0
fn as_raw_stat(&self) -> &stat[src]
fn st_dev(&self) -> u64[src]
fn st_ino(&self) -> u64[src]
fn st_mode(&self) -> u32[src]
fn st_nlink(&self) -> u64[src]
fn st_uid(&self) -> u32[src]
fn st_gid(&self) -> u32[src]
fn st_rdev(&self) -> u64[src]
fn st_size(&self) -> u64[src]
fn st_atime(&self) -> i64[src]
fn st_atime_nsec(&self) -> i64[src]
fn st_mtime(&self) -> i64[src]
fn st_mtime_nsec(&self) -> i64[src]
fn st_ctime(&self) -> i64[src]
fn st_ctime_nsec(&self) -> i64[src]
fn st_blksize(&self) -> u64[src]
fn st_blocks(&self) -> u64[src]
impl MetadataExt for Metadata[src]1.1.0
fn dev(&self) -> u64[src]
fn ino(&self) -> u64[src]
fn mode(&self) -> u32[src]
fn nlink(&self) -> u64[src]
fn uid(&self) -> u32[src]
fn gid(&self) -> u32[src]
fn rdev(&self) -> u64[src]
fn size(&self) -> u64[src]
fn atime(&self) -> i64[src]
fn atime_nsec(&self) -> i64[src]
fn mtime(&self) -> i64[src]
fn mtime_nsec(&self) -> i64[src]
fn ctime(&self) -> i64[src]
fn ctime_nsec(&self) -> i64[src]
fn blksize(&self) -> u64[src]
fn blocks(&self) -> u64[src]
impl MetadataExt for Metadata[src]1.1.0
fn file_attributes(&self) -> u32[src]
fn creation_time(&self) -> u64[src]
fn last_access_time(&self) -> u64[src]
fn last_write_time(&self) -> u64[src]
fn file_size(&self) -> u64[src]
fn volume_serial_number(&self) -> Option<u32>[src]
fn number_of_links(&self) -> Option<u32>[src]
fn file_index(&self) -> Option<u64>[src]
impl RefUnwindSafe for Metadataimpl Send for Metadataimpl Sync for Metadataimpl Unpin for Metadataimpl UnwindSafe for Metadataimpl<T> Any for T where
    T: 'static + ?Sized, [src]
impl<T> Borrow<T> for T where
    T: ?Sized, [src]
fn borrow(&self) -> &TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
    F: Unpin + Future + ?Sized,Â
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,Â
type Item = <I as Iterator>::Item;
impl<R:Â Read + ?Sized, '_> Read for &'_ mut R
impl<W:Â Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]
fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
    F: Unpin + Future + ?Sized,Â
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,Â
type Item = <I as Iterator>::Item;
impl<R:Â Read + ?Sized, '_> Read for &'_ mut R
impl<W:Â Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
    U: From<T>, [src]
impl<T> ToOwned for T where
    T: Clone, [src]
type Owned = TThe resulting type after obtaining ownership.
fn to_owned(&self) -> T[src]
fn clone_into(&self, target: &mut T)[src]
impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]
type Error = InfallibleThe type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/fs/struct.Metadata.html