diff --git a/Cargo.lock b/Cargo.lock
index cc5241b412538493aed2dcc10f29fb1118b861f4..cae109214aa390d520cee6ac81fe81325433078d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -260,6 +260,12 @@ version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "384c2842d4e069d5ccacf5fe1dca4ef8d07a5444329715f0fc3c61813502d4d1"
+[[package]]
+name = "redox-path"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64072665120942deff5fd5425d6c1811b854f4939e7f1c01ce755f64432bbea7"
+
[[package]]
name = "redox_simple_endian"
version = "0.3.0"
@@ -303,6 +309,7 @@ dependencies = [
"libc",
"log",
"range-tree",
+ "redox-path",
"redox_simple_endian",
"redox_syscall 0.4.1",
"seahash",
diff --git a/Cargo.toml b/Cargo.toml
index d875c2556d21d534c31d01799cf74bf769e81772..5541f5aae9162ed2fe0c95044f531f0be9a231d4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,6 +43,7 @@ range-tree = { version = "0.1", optional = true }
seahash = { version = "4.1.0", default-features = false }
termion = { version = "1.5.6", optional = true }
uuid = { version = "1.4", default-features = false }
+redox-path = "0.2.0"
# https://github.com/rexlunae/simple-endian-rs/pull/5
[dependencies.redox_simple_endian]
diff --git a/src/bin/mount.rs b/src/bin/mount.rs
index 986bb5f63a70076e78049768bc95340d0eb104ab..e7347e2a97faac7d71d89d830c1dfec294fd487f 100644
--- a/src/bin/mount.rs
+++ b/src/bin/mount.rs
@@ -205,15 +205,17 @@ fn filesystem_by_uuid(
) -> Option<(String, FileSystem<DiskCache<DiskFile>>)> {
use std::fs;
- match fs::read_dir(":") {
+ use redox_path::canonicalize_using_scheme;
+
+ match fs::read_dir("/scheme") {
Ok(entries) => {
for entry_res in entries {
if let Ok(entry) = entry_res {
- if let Ok(path) = entry.path().into_os_string().into_string() {
- let scheme = path.trim_start_matches(':').trim_matches('/');
+ if let Ok(scheme) = entry.file_name().into_string() {
if scheme.starts_with("disk") {
println!("redoxfs: found scheme {}", scheme);
- match fs::read_dir(&format!("{}:", scheme)) {
+ let scheme_path = canonicalize_using_scheme(&scheme, "")?;
+ match fs::read_dir(scheme_path) {
Ok(entries) => {
for entry_res in entries {
if let Ok(entry) = entry_res {
diff --git a/src/mount/redox/scheme.rs b/src/mount/redox/scheme.rs
index c34fa7fd601e94b0e5fa843c0b534a463cf4d6fc..80bd73b2fe74e789e7064d3d139c335b40110486 100644
--- a/src/mount/redox/scheme.rs
+++ b/src/mount/redox/scheme.rs
@@ -15,6 +15,8 @@ use syscall::flag::{
use syscall::scheme::SchemeMut;
use syscall::{MunmapFlags, EBADFD};
+use redox_path::{canonicalize_using_cwd, canonicalize_using_scheme, RedoxPath};
+
use crate::{Disk, FileSystem, Node, Transaction, TreeData, TreePtr, BLOCK_SIZE};
use super::resource::{DirResource, FileResource, Resource};
@@ -43,15 +45,15 @@ impl<D: Disk> FileScheme<D> {
tx: &mut Transaction<D>,
uid: u32,
gid: u32,
- url: &str,
+ full_path: &str,
node: TreeData<Node>,
nodes: &mut Vec<(TreeData<Node>, String)>,
) -> Result<String> {
let atime = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
- let scheme = format!("{}:", scheme_name);
+ let scheme_path = canonicalize_using_scheme(scheme_name, "").ok_or(Error::new(EINVAL))?;
// symbolic link is relative to this part of the url
- let mut working_dir = dirname(url).unwrap_or(&scheme).to_string();
+ let mut working_dir = dirname(full_path).unwrap_or(scheme_path.to_string());
// node of the link
let mut node = node;
@@ -66,22 +68,49 @@ impl<D: Disk> FileScheme<D> {
atime.as_secs(),
atime.subsec_nanos(),
)?;
- let target = canonicalize(
- &working_dir,
- str::from_utf8(&buf[..count]).map_err(|_| Error::new(EINVAL))?,
+
+ let target = canonicalize_using_cwd(
+ Some(&working_dir),
+ str::from_utf8(&buf[..count]).or(Err(Error::new(EINVAL)))?,
)
.ok_or(Error::new(EINVAL))?;
- if !target.starts_with(&scheme) {
- return Err(Error::new(EXDEV));
- }
- let target_path = &target[scheme.len()..];
+ let target_as_path = RedoxPath::from_absolute(&target).ok_or(Error::new(EINVAL))?;
+
+ let target_reference = match target_as_path {
+ RedoxPath::Standard(_) => {
+ let (scheme, reference) =
+ target_as_path.as_parts().ok_or(Error::new(EINVAL))?;
+ if scheme.as_ref() != scheme_name {
+ return Err(Error::new(EXDEV));
+ }
+ reference.as_ref().to_string()
+ }
+ RedoxPath::Legacy(scheme, reference) => {
+ // Legacy references are not canonicalized because they can contain coded information
+ // We know this is a `file:` reference, so canonicalize into a Standard path
+ if scheme.as_ref() != scheme_name {
+ return Err(Error::new(EXDEV));
+ }
+ let target = canonicalize_using_scheme(scheme_name, reference.as_ref())
+ .ok_or(Error::new(EINVAL))?;
+ let target_as_path =
+ RedoxPath::from_absolute(&target).ok_or(Error::new(EINVAL))?;
+ let (scheme, reference) =
+ target_as_path.as_parts().ok_or(Error::new(EINVAL))?;
+ if scheme.as_ref() != scheme_name {
+ return Err(Error::new(EXDEV));
+ }
+ reference.as_ref().to_string()
+ }
+ };
+
nodes.clear();
if let Some((next_node, next_node_name)) =
- Self::path_nodes(scheme_name, tx, target_path, uid, gid, nodes)?
+ Self::path_nodes(scheme_name, tx, &target_reference, uid, gid, nodes)?
{
if !next_node.data().is_symlink() {
nodes.push((next_node, next_node_name));
- return Ok(target_path.to_string());
+ return Ok(target_reference.to_string());
}
node = next_node;
working_dir = dirname(&target).ok_or(Error::new(EINVAL))?.to_string();
@@ -148,91 +177,9 @@ impl<D: Disk> FileScheme<D> {
}
}
-/// given a path with a prefix, return the containing directory (or scheme)
-fn dirname(path: &str) -> Option<&str> {
- if let Some(separator_index) = path.trim_end_matches('/').rfind('/') {
- return Some(&path[..=separator_index]);
- }
- // there was no path separator, just use the scheme
- if let Some(scheme) = scheme_with_separator(path) {
- return Some(scheme);
- }
- None
-}
-
-/// given a path with a scheme prefix, return the prefix including the separator
-fn scheme_with_separator(path: &str) -> Option<&str> {
- if let Some(sep_idx) = path.find(':') {
- let scheme = &path[..=sep_idx];
- if scheme.find('/').is_none() {
- return Some(&scheme);
- }
- }
- None
-}
-
-/// Make a relative path absolute
-/// Given a cwd of "scheme:/path"
-/// This function will turn "foo" into "scheme:/path/foo"
-/// "/foo" will turn into "scheme:/foo"
-/// "bar:/foo" will be used directly, as it is already absolute
-pub fn canonicalize(current: &str, path: &str) -> Option<String> {
- // This function is modified from a version in the kernel
- let mut canon = if scheme_with_separator(path).is_none() {
- let mut canon = if !path.starts_with('/') {
- let mut cwd = current.trim_end_matches('/').to_string();
- cwd.push('/');
- cwd
- } else {
- scheme_with_separator(current)?.to_string()
- };
-
- canon.push_str(path);
- canon
- } else {
- path.to_string()
- };
-
- // NOTE: assumes the scheme does not include anything like "../" or "./"
- let mut result = {
- let parts = canon
- .split('/')
- .rev()
- .scan(0, |nskip, part| {
- if part == "" {
- Some(None)
- } else if part == "." {
- Some(None)
- } else if part == ".." {
- *nskip += 1;
- Some(None)
- } else {
- if *nskip > 0 {
- *nskip -= 1;
- Some(None)
- } else {
- Some(Some(part))
- }
- }
- })
- .filter_map(|x| x)
- .filter(|x| !x.is_empty())
- .collect::<Vec<_>>();
- parts.iter().rev().fold(String::new(), |mut string, &part| {
- string.push_str(part);
- string.push('/');
- string
- })
- };
- result.pop(); // remove extra '/'
-
- // replace with the root of the scheme if it's empty
- if result.len() == 0 {
- canon.truncate(scheme_with_separator(&canon)?.len());
- Some(canon)
- } else {
- Some(result)
- }
+/// given a path with a scheme, return the containing directory (or scheme)
+fn dirname(path: &str) -> Option<String> {
+ canonicalize_using_cwd(Some(path), "..")
}
impl<D: Disk> SchemeMut for FileScheme<D> {
@@ -296,13 +243,15 @@ impl<D: Disk> SchemeMut for FileScheme<D> {
&& flags & O_SYMLINK != O_SYMLINK
{
let mut resolve_nodes = Vec::new();
+ let full_path =
+ canonicalize_using_scheme(scheme_name, url).ok_or(Error::new(EINVAL))?;
let resolved = self.fs.tx(|tx| {
Self::resolve_symlink(
scheme_name,
tx,
uid,
gid,
- &format!("{}:/{}", scheme_name, url),
+ &full_path,
node,
&mut resolve_nodes,
)