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Code Issues Activity

Merge pull request #1003 from Arcterus/fix-preserve-root

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chgrp: fix more --preserve-root problems
This commit is contained in:
mpkh 2016-12-03 11:13:17 +04:00 • committed by GitHub
commit a47d7d1a5b
2 changed files with 20 additions and 2 deletions
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18
src/chgrp/chgrp.rs
View file

@ -217,6 +217,22 @@ impl Chgrper {
}
}
#[cfg(windows)]
fn is_bind_root<P: AsRef<Path>>(&self, root: P) -> bool {
// TODO: is there an equivalent on Windows?
false
}
#[cfg(unix)]
fn is_bind_root<P: AsRef<Path>>(&self, path: P) -> bool {
if let (Ok(given), Ok(root)) = (fs::metadata(path), fs::metadata("/")) {
given.dev() == root.dev() && given.ino() == root.ino()
} else {
// FIXME: not totally sure if it's okay to just ignore an error here
false
}
}
fn traverse<P: AsRef<Path>>(&self, root: P) -> i32 {
let follow_arg = self.dereference || self.bit_flag != FTS_PHYSICAL;
let path = root.as_ref();
@ -244,7 +260,7 @@ impl Chgrper {
};
if let Some(p) = may_exist {
if p.parent().is_none() {
if p.parent().is_none() || self.is_bind_root(p) {
show_info!("it is dangerous to operate recursively on '/'");
show_info!("use --no-preserve-root to override this failsafe");
return 1;

4
src/uucore/fs.rs
View file

@ -14,7 +14,6 @@ use std::fs;
use std::io::{Error, ErrorKind};
use std::io::Result as IOResult;
use std::path::{Component, Path, PathBuf};
#[cfg(unix)]
use std::borrow::Cow;
pub fn resolve_relative_path<'a>(path: &'a Path) -> Cow<'a, Path> {
@ -26,6 +25,9 @@ pub fn resolve_relative_path<'a>(path: &'a Path) -> Cow<'a, Path> {
for comp in path.components() {
match comp {
Component::ParentDir => {
if let Ok(p) = result.read_link() {
result = p;
}
result.pop();
}
Component::CurDir => (),