Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

15 files changed, 1431 insertions, 0 deletions

diff --git a/vendor/xattr/.cargo-checksum.json b/vendor/xattr/.cargo-checksum.json
new file mode 100644
index 000000000..547e79684
--- /dev/null
+++ b/vendor/xattr/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"1ae7bc15ba446183c3eb5a8a368c02be8cd82dcb56e4f3026c86331f36a3e398","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"8b427f5bc501764575e52ba4f9d95673cf8f6d80a86d0d06599852e1a9a20a36","README.md":"f0e781fef97ed5c8bafeeec00cdeb9c7ed68a0bf7bfe3d44d60b92c9c591b32b","src/error.rs":"a212b93e6538a5e6d2abfb1803bc4fbf25220285fe700abd785e0f67cc8eaf09","src/lib.rs":"7b26c557c6bd4866394a5c06911e4ec66d924fb64a8ead43452a527768c88e51","src/sys/bsd.rs":"14f159b84cc0a48c89fbdaa5eee6a4fe0893812ca10ad0f48d59b87f9ac8e47a","src/sys/linux_macos/linux.rs":"688c65425e23446e036ecfe38116f7a2ac7298b164346cbc63f719b431148aa6","src/sys/linux_macos/macos.rs":"18c88ce4e105b7f95c5a2dc968cd0acf046d2956f0c5f5b5a671fa8ddf462ad8","src/sys/linux_macos/mod.rs":"25e6b8908b20ad3449deff196a93719e3741ae7f7341c047b77e01e240d74acb","src/sys/mod.rs":"20d97a0f285e1dda8044daa6b608133cbd2be81307be0075ffdf6d7973e3b21b","src/sys/unsupported.rs":"cb0d5eea04ed27e9205457eeba2db895ac3e44b55763021017c55347a2621047","src/util.rs":"896ef84ce36c43d756e8bc5fd92e7315059fcb04e029db9b6c0408ac13d37751","tests/main.rs":"4e337fc85831629e5e9a9aabbda850beca4de435b89a3cf89b34f23231f7ee86"},"package":"6d1526bbe5aaeb5eb06885f4d987bcdfa5e23187055de9b83fe00156a821fabc"}
\ No newline at end of file
diff --git a/vendor/xattr/Cargo.toml b/vendor/xattr/Cargo.toml
new file mode 100644
index 000000000..0bd3a3b78
--- /dev/null
+++ b/vendor/xattr/Cargo.toml
@@ -0,0 +1,34 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+name = "xattr"
+version = "0.2.3"
+authors = ["Steven Allen <steven@stebalien.com>"]
+description = "unix extended filesystem attributes"
+documentation = "https://docs.rs/xattr"
+keywords = [
+    "xattr",
+    "filesystem",
+    "unix",
+]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/Stebalien/xattr"
+
+[dependencies.libc]
+version = "0.2"
+
+[dev-dependencies.tempfile]
+version = "3"
+
+[features]
+default = ["unsupported"]
+unsupported = []
diff --git a/vendor/xattr/LICENSE-APACHE b/vendor/xattr/LICENSE-APACHE
new file mode 100644
index 000000000..16fe87b06
--- /dev/null
+++ b/vendor/xattr/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
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+   boilerplate notice, with the fields enclosed by brackets "[]"
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+Copyright [yyyy] [name of copyright owner]
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+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
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+
+Unless required by applicable law or agreed to in writing, software
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diff --git a/vendor/xattr/LICENSE-MIT b/vendor/xattr/LICENSE-MIT
new file mode 100644
index 000000000..0c3270fdd
--- /dev/null
+++ b/vendor/xattr/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2015 Steven Allen
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/xattr/README.md b/vendor/xattr/README.md
new file mode 100644
index 000000000..ca1616f4e
--- /dev/null
+++ b/vendor/xattr/README.md
@@ -0,0 +1,22 @@
+xattr
+=====
+
+[![Build Status](https://travis-ci.org/Stebalien/xattr.svg?branch=master)](https://travis-ci.org/Stebalien/xattr)
+[![Build Status](https://api.cirrus-ci.com/github/Stebalien/xattr.svg)](https://cirrus-ci.com/github/Stebalien/xattr)
+
+A small library for setting, getting, and listing extended attributes.
+
+Supported Platforms: Android, Linux, MacOS, FreeBSD, and NetBSD.
+
+API Documentation: https://stebalien.github.com/xattr/xattr/
+
+Unsupported Platforms
+--------------------------
+
+This library includes no-op support for unsupported platforms. That is, it will
+build on *all* platforms but always fail on unsupported platforms.
+
+1. You can turn this off by disabling the default `unsupported` feature. If you
+   do so, this library will fail to compile on unsupported platforms.
+2. Alternatively, you can detect unsupported platforms at runtime by checking
+   the `xattr::SUPPORTED_PLATFORM` boolean.
diff --git a/vendor/xattr/src/error.rs b/vendor/xattr/src/error.rs
new file mode 100644
index 000000000..f17503e97
--- /dev/null
+++ b/vendor/xattr/src/error.rs
@@ -0,0 +1,28 @@
+use std::error::Error;
+use std::fmt;
+
+/// The error type returned on unsupported platforms.
+///
+/// On unsupported platforms, all operations will fail with an `io::Error` with
+/// a kind `io::ErrorKind::Other` and an `UnsupportedPlatformError` error as the inner error.
+/// While you *could* check the inner error, it's probably simpler just to check
+/// `xattr::SUPPORTED_PLATFORM`.
+///
+/// This error mostly exists for pretty error messages.
+#[derive(Copy, Clone, Debug)]
+pub struct UnsupportedPlatformError;
+
+impl Error for UnsupportedPlatformError {
+    fn description(&self) -> &str {
+        "unsupported platform"
+    }
+}
+
+impl fmt::Display for UnsupportedPlatformError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "unsupported platform, please file a bug at `https://github.com/Stebalien/xattr'"
+        )
+    }
+}
diff --git a/vendor/xattr/src/lib.rs b/vendor/xattr/src/lib.rs
new file mode 100644
index 000000000..bf00b37f3
--- /dev/null
+++ b/vendor/xattr/src/lib.rs
@@ -0,0 +1,116 @@
+//! A pure-Rust library to manage extended attributes.
+//!
+//! It provides support for manipulating extended attributes
+//! (`xattrs`) on modern Unix filesystems. See the `attr(5)`
+//! manpage for more details.
+//!
+//! An extension trait [`FileExt`](::FileExt) is provided to directly work with
+//! standard `File` objects and file descriptors.
+//!
+//! NOTE: In case of a symlink as path argument, all methods
+//! in this library work on the symlink itself **without**
+//! de-referencing it.
+//!
+//! ```rust
+//! let mut xattrs = xattr::list("/").unwrap().peekable();
+//!
+//! if xattrs.peek().is_none() {
+//!     println!("no xattr set on root");
+//!     return;
+//! }
+//!
+//! println!("Extended attributes:");
+//! for attr in xattrs {
+//!     println!(" - {:?}", attr);
+//! }
+//! ```
+
+extern crate libc;
+
+mod error;
+mod sys;
+mod util;
+
+use std::ffi::OsStr;
+use std::fs::File;
+use std::io;
+use std::os::unix::io::AsRawFd;
+use std::path::Path;
+
+pub use error::UnsupportedPlatformError;
+pub use sys::{XAttrs, SUPPORTED_PLATFORM};
+
+/// Get an extended attribute for the specified file.
+pub fn get<N, P>(path: P, name: N) -> io::Result<Option<Vec<u8>>>
+where
+    P: AsRef<Path>,
+    N: AsRef<OsStr>,
+{
+    util::extract_noattr(sys::get_path(path.as_ref(), name.as_ref()))
+}
+
+/// Set an extended attribute on the specified file.
+pub fn set<N, P>(path: P, name: N, value: &[u8]) -> io::Result<()>
+where
+    P: AsRef<Path>,
+    N: AsRef<OsStr>,
+{
+    sys::set_path(path.as_ref(), name.as_ref(), value)
+}
+
+/// Remove an extended attribute from the specified file.
+pub fn remove<N, P>(path: P, name: N) -> io::Result<()>
+where
+    P: AsRef<Path>,
+    N: AsRef<OsStr>,
+{
+    sys::remove_path(path.as_ref(), name.as_ref())
+}
+
+/// List extended attributes attached to the specified file.
+///
+/// Note: this may not list *all* attributes. Speficially, it definitely won't list any trusted
+/// attributes unless you are root and it may not list system attributes.
+pub fn list<P>(path: P) -> io::Result<XAttrs>
+where
+    P: AsRef<Path>,
+{
+    sys::list_path(path.as_ref())
+}
+
+/// Extension trait to manipulate extended attributes on `File`-like objects.
+pub trait FileExt: AsRawFd {
+    /// Get an extended attribute for the specified file.
+    fn get_xattr<N>(&self, name: N) -> io::Result<Option<Vec<u8>>>
+    where
+        N: AsRef<OsStr>,
+    {
+        util::extract_noattr(sys::get_fd(self.as_raw_fd(), name.as_ref()))
+    }
+
+    /// Set an extended attribute on the specified file.
+    fn set_xattr<N>(&self, name: N, value: &[u8]) -> io::Result<()>
+    where
+        N: AsRef<OsStr>,
+    {
+        sys::set_fd(self.as_raw_fd(), name.as_ref(), value)
+    }
+
+    /// Remove an extended attribute from the specified file.
+    fn remove_xattr<N>(&self, name: N) -> io::Result<()>
+    where
+        N: AsRef<OsStr>,
+    {
+        sys::remove_fd(self.as_raw_fd(), name.as_ref())
+    }
+
+    /// List extended attributes attached to the specified file.
+    ///
+    /// Note: this may not list *all* attributes. Speficially, it definitely won't list any trusted
+    /// attributes unless you are root and it may not list system attributes.
+    fn list_xattr(&self) -> io::Result<XAttrs> {
+        sys::list_fd(self.as_raw_fd())
+    }
+}
+
+impl FileExt for File {}
diff --git a/vendor/xattr/src/sys/bsd.rs b/vendor/xattr/src/sys/bsd.rs
new file mode 100644
index 000000000..910fbbdf9
--- /dev/null
+++ b/vendor/xattr/src/sys/bsd.rs
@@ -0,0 +1,367 @@
+//! FreeBSD and NetBSD xattr support.
+
+use std::ffi::{CString, OsStr, OsString};
+use std::io;
+use std::mem;
+use std::os::unix::ffi::{OsStrExt, OsStringExt};
+use std::os::unix::io::RawFd;
+use std::path::Path;
+
+use libc::{c_char, c_int, c_void, size_t, ssize_t, EPERM};
+use util::{allocate_loop, path_to_c};
+
+const EXTATTR_NAMESPACE_USER_STRING: &'static str = "user";
+const EXTATTR_NAMESPACE_SYSTEM_STRING: &'static str = "system";
+const EXTATTR_NAMESPACE_NAMES: [&'static str; 3] = [
+    "empty",
+    EXTATTR_NAMESPACE_USER_STRING,
+    EXTATTR_NAMESPACE_SYSTEM_STRING,
+];
+const EXTATTR_NAMESPACE_USER: c_int = 1;
+const EXTATTR_NAMESPACE_SYSTEM: c_int = 2;
+
+extern "C" {
+    pub fn extattr_list_fd(
+        fd: c_int,
+        attrnamespace: c_int,
+        data: *mut c_void,
+        nbytes: size_t,
+    ) -> ssize_t;
+    pub fn extattr_get_fd(
+        fd: c_int,
+        attrnamespace: c_int,
+        attrname: *const c_char,
+        data: *mut c_void,
+        nbytes: size_t,
+    ) -> ssize_t;
+    pub fn extattr_delete_fd(fd: c_int, attrname: c_int, attrname: *const c_char) -> c_int;
+    pub fn extattr_set_fd(
+        fd: c_int,
+        attrname: c_int,
+        attrname: *const c_char,
+        data: *const c_void,
+        nbytes: size_t,
+    ) -> ssize_t;
+
+    pub fn extattr_list_link(
+        path: *const c_char,
+        attrnamespace: c_int,
+        data: *mut c_void,
+        nbytes: size_t,
+    ) -> ssize_t;
+    pub fn extattr_get_link(
+        path: *const c_char,
+        attrnamespace: c_int,
+        attrname: *const c_char,
+        data: *mut c_void,
+        nbytes: size_t,
+    ) -> ssize_t;
+    pub fn extattr_delete_link(
+        path: *const c_char,
+        attrname: c_int,
+        attrname: *const c_char,
+    ) -> c_int;
+    pub fn extattr_set_link(
+        path: *const c_char,
+        attrname: c_int,
+        attrname: *const c_char,
+        data: *const c_void,
+        nbytes: size_t,
+    ) -> ssize_t;
+}
+
+/// An iterator over a set of extended attributes names.
+pub struct XAttrs {
+    user_attrs: Box<[u8]>,
+    system_attrs: Box<[u8]>,
+    offset: usize,
+}
+
+impl Clone for XAttrs {
+    fn clone(&self) -> Self {
+        XAttrs {
+            user_attrs: Vec::from(&*self.user_attrs).into_boxed_slice(),
+            system_attrs: Vec::from(&*self.system_attrs).into_boxed_slice(),
+            offset: self.offset,
+        }
+    }
+
+    fn clone_from(&mut self, other: &XAttrs) {
+        self.offset = other.offset;
+
+        let mut data = mem::replace(&mut self.user_attrs, Box::new([])).into_vec();
+        data.extend(other.user_attrs.iter().cloned());
+        self.user_attrs = data.into_boxed_slice();
+
+        data = mem::replace(&mut self.system_attrs, Box::new([])).into_vec();
+        data.extend(other.system_attrs.iter().cloned());
+        self.system_attrs = data.into_boxed_slice();
+    }
+}
+
+impl Iterator for XAttrs {
+    type Item = OsString;
+    fn next(&mut self) -> Option<OsString> {
+        if self.user_attrs.is_empty() && self.system_attrs.is_empty() {
+            return None;
+        }
+
+        if self.offset == self.user_attrs.len() + self.system_attrs.len() {
+            return None;
+        }
+
+        let data = if self.offset < self.system_attrs.len() {
+            &self.system_attrs[self.offset..]
+        } else {
+            &self.user_attrs[self.offset - self.system_attrs.len()..]
+        };
+
+        let siz = data[0] as usize;
+
+        self.offset += siz + 1;
+        if self.offset < self.system_attrs.len() {
+            Some(prefix_namespace(
+                OsStr::from_bytes(&data[1..siz + 1]),
+                EXTATTR_NAMESPACE_SYSTEM,
+            ))
+        } else {
+            Some(prefix_namespace(
+                OsStr::from_bytes(&data[1..siz + 1]),
+                EXTATTR_NAMESPACE_USER,
+            ))
+        }
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        if self.user_attrs.len() + self.system_attrs.len() == self.offset {
+            (0, Some(0))
+        } else {
+            (1, None)
+        }
+    }
+}
+
+fn name_to_ns(name: &OsStr) -> io::Result<(c_int, CString)> {
+    let mut groups = name.as_bytes().splitn(2, |&b| b == b'.').take(2);
+    let nsname = match groups.next() {
+        Some(s) => s,
+        None => {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "couldn't find namespace",
+            ))
+        }
+    };
+
+    let propname = match groups.next() {
+        Some(s) => s,
+        None => {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "couldn't find attribute",
+            ))
+        }
+    };
+
+    let ns_int = match EXTATTR_NAMESPACE_NAMES
+        .iter()
+        .position(|&s| s.as_bytes() == nsname)
+    {
+        Some(i) => i,
+        None => {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "no matching namespace",
+            ))
+        }
+    };
+
+    Ok((ns_int as c_int, CString::new(propname)?))
+}
+
+fn prefix_namespace(attr: &OsStr, ns: c_int) -> OsString {
+    let nsname = EXTATTR_NAMESPACE_NAMES[ns as usize];
+    let mut v = Vec::with_capacity(nsname.as_bytes().len() + attr.as_bytes().len() + 1);
+    v.extend(nsname.as_bytes());
+    v.extend(".".as_bytes());
+    v.extend(attr.as_bytes());
+    OsString::from_vec(v)
+}
+
+pub fn get_fd(fd: RawFd, name: &OsStr) -> io::Result<Vec<u8>> {
+    let (ns, name) = name_to_ns(name)?;
+    unsafe {
+        allocate_loop(|buf, len| {
+            extattr_get_fd(fd, ns, name.as_ptr(), buf as *mut c_void, len as size_t)
+        })
+    }
+}
+
+pub fn set_fd(fd: RawFd, name: &OsStr, value: &[u8]) -> io::Result<()> {
+    let (ns, name) = name_to_ns(name)?;
+    let ret = unsafe {
+        extattr_set_fd(
+            fd,
+            ns,
+            name.as_ptr(),
+            value.as_ptr() as *const c_void,
+            value.len() as size_t,
+        )
+    };
+    if ret == -1 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn remove_fd(fd: RawFd, name: &OsStr) -> io::Result<()> {
+    let (ns, name) = name_to_ns(name)?;
+    let ret = unsafe { extattr_delete_fd(fd, ns, name.as_ptr()) };
+    if ret != 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn list_fd(fd: RawFd) -> io::Result<XAttrs> {
+    let sysvec = unsafe {
+        let res = allocate_loop(|buf, len| {
+            extattr_list_fd(
+                fd,
+                EXTATTR_NAMESPACE_SYSTEM,
+                buf as *mut c_void,
+                len as size_t,
+            )
+        });
+        // On FreeBSD, system attributes require root privileges to view. However,
+        // to mimic the behavior of listxattr in linux and osx, we need to query
+        // them anyway and return empty results if we get EPERM
+        match res {
+            Ok(v) => v,
+            Err(err) => {
+                if err.raw_os_error() == Some(EPERM) {
+                    Vec::new()
+                } else {
+                    return Err(err);
+                }
+            }
+        }
+    };
+
+    let uservec = unsafe {
+        let res = allocate_loop(|buf, len| {
+            extattr_list_fd(
+                fd,
+                EXTATTR_NAMESPACE_USER,
+                buf as *mut c_void,
+                len as size_t,
+            )
+        });
+        match res {
+            Ok(v) => v,
+            Err(err) => return Err(err),
+        }
+    };
+
+    Ok(XAttrs {
+        system_attrs: sysvec.into_boxed_slice(),
+        user_attrs: uservec.into_boxed_slice(),
+        offset: 0,
+    })
+}
+
+pub fn get_path(path: &Path, name: &OsStr) -> io::Result<Vec<u8>> {
+    let (ns, name) = name_to_ns(name)?;
+    let path = path_to_c(path)?;
+    unsafe {
+        allocate_loop(|buf, len| {
+            extattr_get_link(
+                path.as_ptr(),
+                ns,
+                name.as_ptr(),
+                buf as *mut c_void,
+                len as size_t,
+            )
+        })
+    }
+}
+
+pub fn set_path(path: &Path, name: &OsStr, value: &[u8]) -> io::Result<()> {
+    let (ns, name) = name_to_ns(name)?;
+    let path = path_to_c(path)?;
+    let ret = unsafe {
+        extattr_set_link(
+            path.as_ptr(),
+            ns,
+            name.as_ptr(),
+            value.as_ptr() as *const c_void,
+            value.len() as size_t,
+        )
+    };
+    if ret == -1 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn remove_path(path: &Path, name: &OsStr) -> io::Result<()> {
+    let (ns, name) = name_to_ns(name)?;
+    let path = path_to_c(path)?;
+    let ret = unsafe { extattr_delete_link(path.as_ptr(), ns, name.as_ptr()) };
+    if ret != 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn list_path(path: &Path) -> io::Result<XAttrs> {
+    let path = path_to_c(path)?;
+    let sysvec = unsafe {
+        let res = allocate_loop(|buf, len| {
+            extattr_list_link(
+                path.as_ptr(),
+                EXTATTR_NAMESPACE_SYSTEM,
+                buf as *mut c_void,
+                len as size_t,
+            )
+        });
+        // On FreeBSD, system attributes require root privileges to view. However,
+        // to mimic the behavior of listxattr in linux and osx, we need to query
+        // them anyway and return empty results if we get EPERM
+        match res {
+            Ok(v) => v,
+            Err(err) => {
+                if err.raw_os_error() == Some(EPERM) {
+                    Vec::new()
+                } else {
+                    return Err(err);
+                }
+            }
+        }
+    };
+
+    let uservec = unsafe {
+        let res = allocate_loop(|buf, len| {
+            extattr_list_link(
+                path.as_ptr(),
+                EXTATTR_NAMESPACE_USER,
+                buf as *mut c_void,
+                len as size_t,
+            )
+        });
+        match res {
+            Ok(v) => v,
+            Err(err) => return Err(err),
+        }
+    };
+
+    Ok(XAttrs {
+        system_attrs: sysvec.into_boxed_slice(),
+        user_attrs: uservec.into_boxed_slice(),
+        offset: 0,
+    })
+}
diff --git a/vendor/xattr/src/sys/linux_macos/linux.rs b/vendor/xattr/src/sys/linux_macos/linux.rs
new file mode 100644
index 000000000..6f23fc3e1
--- /dev/null
+++ b/vendor/xattr/src/sys/linux_macos/linux.rs
@@ -0,0 +1,52 @@
+use libc::{c_char, c_int, c_void, size_t, ssize_t};
+
+extern "C" {
+    pub fn flistxattr(fd: c_int, buf: *mut c_char, size: size_t) -> ssize_t;
+    pub fn fgetxattr(fd: c_int, name: *const c_char, value: *mut c_void, size: size_t) -> ssize_t;
+    pub fn fremovexattr(fd: c_int, name: *const c_char) -> c_int;
+
+    pub fn llistxattr(path: *const c_char, buf: *mut c_char, size: size_t) -> ssize_t;
+    pub fn lgetxattr(
+        path: *const c_char,
+        name: *const c_char,
+        value: *mut c_void,
+        size: size_t,
+    ) -> ssize_t;
+    pub fn lremovexattr(path: *const c_char, name: *const c_char) -> c_int;
+}
+
+pub unsafe fn fsetxattr(
+    fd: c_int,
+    name: *const c_char,
+    value: *const c_void,
+    size: size_t,
+) -> ssize_t {
+    extern "C" {
+        fn fsetxattr(
+            fd: c_int,
+            name: *const c_char,
+            value: *const c_void,
+            size: size_t,
+            flags: c_int,
+        ) -> ssize_t;
+    }
+    fsetxattr(fd, name, value, size, 0)
+}
+
+pub unsafe fn lsetxattr(
+    path: *const c_char,
+    name: *const c_char,
+    value: *const c_void,
+    size: size_t,
+) -> ssize_t {
+    extern "C" {
+        fn lsetxattr(
+            path: *const c_char,
+            name: *const c_char,
+            value: *const c_void,
+            size: size_t,
+            flags: c_int,
+        ) -> ssize_t;
+    }
+    lsetxattr(path, name, value, size, 0)
+}
diff --git a/vendor/xattr/src/sys/linux_macos/macos.rs b/vendor/xattr/src/sys/linux_macos/macos.rs
new file mode 100644
index 000000000..734dd88f3
--- /dev/null
+++ b/vendor/xattr/src/sys/linux_macos/macos.rs
@@ -0,0 +1,120 @@
+use libc::{c_char, c_int, c_void, size_t, ssize_t, uint32_t};
+
+const XATTR_NOFOLLOW: c_int = 0x0001;
+
+#[inline(always)]
+pub unsafe fn fremovexattr(fd: c_int, name: *const c_char) -> c_int {
+    extern "C" {
+        fn fremovexattr(fd: c_int, name: *const c_char, options: c_int) -> c_int;
+    }
+    fremovexattr(fd, name, 0)
+}
+
+#[inline(always)]
+pub unsafe fn fsetxattr(
+    fd: c_int,
+    name: *const c_char,
+    value: *const c_void,
+    size: size_t,
+) -> ssize_t {
+    extern "C" {
+        fn fsetxattr(
+            fd: c_int,
+            name: *const c_char,
+            value: *const c_void,
+            size: size_t,
+            position: uint32_t,
+            options: c_int,
+        ) -> ssize_t;
+    }
+    fsetxattr(fd, name, value, size, 0, 0)
+}
+
+#[inline(always)]
+pub unsafe fn fgetxattr(
+    fd: c_int,
+    name: *const c_char,
+    value: *mut c_void,
+    size: size_t,
+) -> ssize_t {
+    extern "C" {
+        fn fgetxattr(
+            fd: c_int,
+            name: *const c_char,
+            value: *mut c_void,
+            size: size_t,
+            position: uint32_t,
+            options: c_int,
+        ) -> ssize_t;
+    }
+    fgetxattr(fd, name, value, size, 0, 0)
+}
+
+#[inline(always)]
+pub unsafe fn flistxattr(fd: c_int, buf: *mut c_char, size: size_t) -> ssize_t {
+    extern "C" {
+        fn flistxattr(fd: c_int, buf: *mut c_char, size: size_t, options: c_int) -> ssize_t;
+    }
+    flistxattr(fd, buf, size, 0)
+}
+
+#[inline(always)]
+pub unsafe fn lremovexattr(path: *const c_char, name: *const c_char) -> c_int {
+    extern "C" {
+        fn removexattr(path: *const c_char, name: *const c_char, options: c_int) -> c_int;
+    }
+    removexattr(path, name, XATTR_NOFOLLOW)
+}
+
+#[inline(always)]
+pub unsafe fn lsetxattr(
+    path: *const c_char,
+    name: *const c_char,
+    value: *const c_void,
+    size: size_t,
+) -> ssize_t {
+    extern "C" {
+        fn setxattr(
+            path: *const c_char,
+            name: *const c_char,
+            value: *const c_void,
+            size: size_t,
+            position: uint32_t,
+            options: c_int,
+        ) -> ssize_t;
+    }
+    setxattr(path, name, value, size, 0, XATTR_NOFOLLOW)
+}
+
+#[inline(always)]
+pub unsafe fn lgetxattr(
+    path: *const c_char,
+    name: *const c_char,
+    value: *mut c_void,
+    size: size_t,
+) -> ssize_t {
+    extern "C" {
+        fn getxattr(
+            path: *const c_char,
+            name: *const c_char,
+            value: *mut c_void,
+            size: size_t,
+            position: uint32_t,
+            options: c_int,
+        ) -> ssize_t;
+    }
+    getxattr(path, name, value, size, 0, XATTR_NOFOLLOW)
+}
+
+#[inline(always)]
+pub unsafe fn llistxattr(path: *const c_char, buf: *mut c_char, size: size_t) -> ssize_t {
+    extern "C" {
+        fn listxattr(
+            path: *const c_char,
+            buf: *mut c_char,
+            size: size_t,
+            options: c_int,
+        ) -> ssize_t;
+    }
+    listxattr(path, buf, size, XATTR_NOFOLLOW)
+}
diff --git a/vendor/xattr/src/sys/linux_macos/mod.rs b/vendor/xattr/src/sys/linux_macos/mod.rs
new file mode 100644
index 000000000..c0e86fe31
--- /dev/null
+++ b/vendor/xattr/src/sys/linux_macos/mod.rs
@@ -0,0 +1,168 @@
+#[cfg(any(target_os = "linux", target_os = "android"))]
+mod linux;
+
+#[cfg(any(target_os = "linux", target_os = "android"))]
+use self::linux::*;
+
+#[cfg(target_os = "macos")]
+mod macos;
+
+#[cfg(target_os = "macos")]
+use self::macos::*;
+
+use std::ffi::{OsStr, OsString};
+use std::io;
+use std::mem;
+use std::os::unix::ffi::OsStrExt;
+use std::os::unix::io::RawFd;
+use std::path::Path;
+
+use libc::{c_char, c_void, size_t};
+
+use util::{allocate_loop, name_to_c, path_to_c};
+
+/// An iterator over a set of extended attributes names.
+pub struct XAttrs {
+    data: Box<[u8]>,
+    offset: usize,
+}
+
+impl Clone for XAttrs {
+    fn clone(&self) -> Self {
+        XAttrs {
+            data: Vec::from(&*self.data).into_boxed_slice(),
+            offset: self.offset,
+        }
+    }
+    fn clone_from(&mut self, other: &XAttrs) {
+        self.offset = other.offset;
+
+        let mut data = mem::replace(&mut self.data, Box::new([])).into_vec();
+        data.extend(other.data.iter().cloned());
+        self.data = data.into_boxed_slice();
+    }
+}
+
+// Yes, I could avoid these allocations on linux/macos. However, if we ever want to be freebsd
+// compatible, we need to be able to prepend the namespace to the extended attribute names.
+// Furthermore, borrowing makes the API messy.
+impl Iterator for XAttrs {
+    type Item = OsString;
+    fn next(&mut self) -> Option<OsString> {
+        let data = &self.data[self.offset..];
+        if data.is_empty() {
+            None
+        } else {
+            // always null terminated (unless empty).
+            let end = data.iter().position(|&b| b == 0u8).unwrap();
+            self.offset += end + 1;
+            Some(OsStr::from_bytes(&data[..end]).to_owned())
+        }
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        if self.data.len() == self.offset {
+            (0, Some(0))
+        } else {
+            (1, None)
+        }
+    }
+}
+
+pub fn get_fd(fd: RawFd, name: &OsStr) -> io::Result<Vec<u8>> {
+    let name = name_to_c(name)?;
+    unsafe {
+        allocate_loop(|buf, len| fgetxattr(fd, name.as_ptr(), buf as *mut c_void, len as size_t))
+    }
+}
+
+pub fn set_fd(fd: RawFd, name: &OsStr, value: &[u8]) -> io::Result<()> {
+    let name = name_to_c(name)?;
+    let ret = unsafe {
+        fsetxattr(
+            fd,
+            name.as_ptr(),
+            value.as_ptr() as *const c_void,
+            value.len() as size_t,
+        )
+    };
+    if ret != 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn remove_fd(fd: RawFd, name: &OsStr) -> io::Result<()> {
+    let name = name_to_c(name)?;
+    let ret = unsafe { fremovexattr(fd, name.as_ptr()) };
+    if ret != 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn list_fd(fd: RawFd) -> io::Result<XAttrs> {
+    let vec =
+        unsafe { allocate_loop(|buf, len| flistxattr(fd, buf as *mut c_char, len as size_t))? };
+    Ok(XAttrs {
+        data: vec.into_boxed_slice(),
+        offset: 0,
+    })
+}
+
+pub fn get_path(path: &Path, name: &OsStr) -> io::Result<Vec<u8>> {
+    let name = name_to_c(name)?;
+    let path = path_to_c(path)?;
+    unsafe {
+        allocate_loop(|buf, len| {
+            lgetxattr(
+                path.as_ptr(),
+                name.as_ptr(),
+                buf as *mut c_void,
+                len as size_t,
+            )
+        })
+    }
+}
+
+pub fn set_path(path: &Path, name: &OsStr, value: &[u8]) -> io::Result<()> {
+    let name = name_to_c(name)?;
+    let path = path_to_c(path)?;
+    let ret = unsafe {
+        lsetxattr(
+            path.as_ptr(),
+            name.as_ptr(),
+            value.as_ptr() as *const c_void,
+            value.len() as size_t,
+        )
+    };
+    if ret != 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn remove_path(path: &Path, name: &OsStr) -> io::Result<()> {
+    let name = name_to_c(name)?;
+    let path = path_to_c(path)?;
+    let ret = unsafe { lremovexattr(path.as_ptr(), name.as_ptr()) };
+    if ret != 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
+
+pub fn list_path(path: &Path) -> io::Result<XAttrs> {
+    let path = path_to_c(path)?;
+    let vec = unsafe {
+        allocate_loop(|buf, len| llistxattr(path.as_ptr(), buf as *mut c_char, len as size_t))?
+    };
+    Ok(XAttrs {
+        data: vec.into_boxed_slice(),
+        offset: 0,
+    })
+}
diff --git a/vendor/xattr/src/sys/mod.rs b/vendor/xattr/src/sys/mod.rs
new file mode 100644
index 000000000..4724826b5
--- /dev/null
+++ b/vendor/xattr/src/sys/mod.rs
@@ -0,0 +1,40 @@
+macro_rules! platforms {
+    ($($($platform:expr);* => $module:ident),*) => {
+        $(
+            #[cfg(any($(target_os = $platform),*))]
+            #[cfg_attr(not(any($(target_os = $platform),*)), allow(dead_code))]
+            mod $module;
+
+            #[cfg(any($(target_os = $platform),*))]
+            pub use self::$module::*;
+
+            #[cfg(any($(target_os = $platform),*))]
+            pub const ENOATTR: ::libc::c_int = ::libc::ENOATTR;
+        )*
+
+        #[cfg(all(feature = "unsupported", not(any($($(target_os = $platform),*),*))))]
+        #[cfg_attr(any($($(target_os = $platform),*),*), allow(dead_code))]
+        mod unsupported;
+
+        #[cfg(all(feature = "unsupported", not(any($($(target_os = $platform),*),*))))]
+        pub use self::unsupported::*;
+        #[cfg(all(feature = "unsupported", not(any($($(target_os = $platform),*),*))))]
+        pub const ENOATTR: ::libc::c_int = 0;
+
+
+        /// A constant indicating whether or not the target platform is supported.
+        ///
+        /// To make programmer's lives easier, this library builds on all platforms.
+        /// However, all function calls on unsupported platforms will return
+        /// `io::Error`s.
+        ///
+        /// Note: If you would like compilation to simply fail on unsupported platforms,
+        /// turn of the `unsupported` feature.
+        pub const SUPPORTED_PLATFORM: bool = cfg!(any($($(target_os = $platform),*),*));
+    }
+}
+
+platforms! {
+    "android"; "linux"; "macos" => linux_macos,
+    "freebsd"; "netbsd" => bsd
+}
diff --git a/vendor/xattr/src/sys/unsupported.rs b/vendor/xattr/src/sys/unsupported.rs
new file mode 100644
index 000000000..7eb48a5d4
--- /dev/null
+++ b/vendor/xattr/src/sys/unsupported.rs
@@ -0,0 +1,77 @@
+use std::ffi::{OsStr, OsString};
+use std::io;
+use std::os::unix::io::RawFd;
+use std::path::Path;
+
+use UnsupportedPlatformError;
+
+/// An iterator over a set of extended attributes names.
+#[derive(Clone, Debug)]
+pub struct XAttrs;
+
+impl Iterator for XAttrs {
+    type Item = OsString;
+    fn next(&mut self) -> Option<OsString> {
+        unreachable!("this should never exist")
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        unreachable!("this should never exist")
+    }
+}
+
+pub fn get_fd(_: RawFd, _: &OsStr) -> io::Result<Vec<u8>> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
+
+pub fn set_fd(_: RawFd, _: &OsStr, _: &[u8]) -> io::Result<()> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
+
+pub fn remove_fd(_: RawFd, _: &OsStr) -> io::Result<()> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
+
+pub fn list_fd(_: RawFd) -> io::Result<XAttrs> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
+
+pub fn get_path(_: &Path, _: &OsStr) -> io::Result<Vec<u8>> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
+
+pub fn set_path(_: &Path, _: &OsStr, _: &[u8]) -> io::Result<()> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
+
+pub fn remove_path(_: &Path, _: &OsStr) -> io::Result<()> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
+
+pub fn list_path(_: &Path) -> io::Result<XAttrs> {
+    Err(io::Error::new(
+        io::ErrorKind::Other,
+        UnsupportedPlatformError,
+    ))
+}
diff --git a/vendor/xattr/src/util.rs b/vendor/xattr/src/util.rs
new file mode 100644
index 000000000..d107694b6
--- /dev/null
+++ b/vendor/xattr/src/util.rs
@@ -0,0 +1,65 @@
+use std::ffi::CString;
+use std::ffi::OsStr;
+use std::io;
+use std::os::unix::ffi::OsStrExt;
+use std::path::Path;
+use std::ptr;
+
+use libc::{ssize_t, ERANGE};
+
+// Need to use this one as libc only defines this on supported platforms. Given
+// that we want to at least compile on unsupported platforms, we define this in
+// our platform-specific modules.
+use sys::ENOATTR;
+
+#[allow(dead_code)]
+pub fn name_to_c(name: &OsStr) -> io::Result<CString> {
+    match CString::new(name.as_bytes()) {
+        Ok(name) => Ok(name),
+        Err(_) => Err(io::Error::new(
+            io::ErrorKind::InvalidInput,
+            "name must not contain null bytes",
+        )),
+    }
+}
+
+pub fn path_to_c(path: &Path) -> io::Result<CString> {
+    match CString::new(path.as_os_str().as_bytes()) {
+        Ok(name) => Ok(name),
+        Err(_) => Err(io::Error::new(io::ErrorKind::NotFound, "file not found")),
+    }
+}
+
+pub fn extract_noattr(result: io::Result<Vec<u8>>) -> io::Result<Option<Vec<u8>>> {
+    result.map(Some).or_else(|e| match e.raw_os_error() {
+        Some(ENOATTR) => Ok(None),
+        _ => Err(e),
+    })
+}
+
+pub unsafe fn allocate_loop<F: FnMut(*mut u8, usize) -> ssize_t>(mut f: F) -> io::Result<Vec<u8>> {
+    let mut vec: Vec<u8> = Vec::new();
+    loop {
+        let ret = (f)(ptr::null_mut(), 0);
+        if ret < 0 {
+            return Err(io::Error::last_os_error());
+        } else if ret == 0 {
+            break;
+        }
+        vec.reserve_exact(ret as usize);
+
+        let ret = (f)(vec.as_mut_ptr(), vec.capacity());
+        if ret >= 0 {
+            vec.set_len(ret as usize);
+            break;
+        } else {
+            let error = io::Error::last_os_error();
+            if error.raw_os_error() == Some(ERANGE) {
+                continue;
+            }
+            return Err(error);
+        }
+    }
+    vec.shrink_to_fit();
+    Ok(vec)
+}
diff --git a/vendor/xattr/tests/main.rs b/vendor/xattr/tests/main.rs
new file mode 100644
index 000000000..0c4367862
--- /dev/null
+++ b/vendor/xattr/tests/main.rs
@@ -0,0 +1,115 @@
+extern crate tempfile;
+extern crate xattr;
+
+use std::collections::BTreeSet;
+use std::ffi::OsStr;
+use xattr::FileExt;
+
+use tempfile::{tempfile_in, NamedTempFile};
+
+#[test]
+#[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "macos"))]
+fn test_fd() {
+    use std::os::unix::ffi::OsStrExt;
+    // Only works on "real" filesystems.
+    let tmp = tempfile_in("/var/tmp").unwrap();
+    assert!(tmp.get_xattr("user.test").unwrap().is_none());
+    assert_eq!(
+        tmp.list_xattr()
+            .unwrap()
+            .filter(|x| x.as_bytes().starts_with(b"user."))
+            .count(),
+        0
+    );
+
+    tmp.set_xattr("user.test", b"my test").unwrap();
+    assert_eq!(tmp.get_xattr("user.test").unwrap().unwrap(), b"my test");
+    assert_eq!(
+        tmp.list_xattr()
+            .unwrap()
+            .filter(|x| x.as_bytes().starts_with(b"user."))
+            .collect::<Vec<_>>(),
+        vec![OsStr::new("user.test")]
+    );
+
+    tmp.remove_xattr("user.test").unwrap();
+    assert!(tmp.get_xattr("user.test").unwrap().is_none());
+    assert_eq!(
+        tmp.list_xattr()
+            .unwrap()
+            .filter(|x| x.as_bytes().starts_with(b"user."))
+            .count(),
+        0
+    );
+}
+
+#[test]
+#[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "macos"))]
+fn test_path() {
+    use std::os::unix::ffi::OsStrExt;
+    // Only works on "real" filesystems.
+    let tmp = NamedTempFile::new_in("/var/tmp").unwrap();
+    assert!(xattr::get(tmp.path(), "user.test").unwrap().is_none());
+    assert_eq!(
+        xattr::list(tmp.path())
+            .unwrap()
+            .filter(|x| x.as_bytes().starts_with(b"user."))
+            .count(),
+        0
+    );
+
+    xattr::set(tmp.path(), "user.test", b"my test").unwrap();
+    assert_eq!(
+        xattr::get(tmp.path(), "user.test").unwrap().unwrap(),
+        b"my test"
+    );
+    assert_eq!(
+        xattr::list(tmp.path())
+            .unwrap()
+            .filter(|x| x.as_bytes().starts_with(b"user."))
+            .collect::<Vec<_>>(),
+        vec![OsStr::new("user.test")]
+    );
+
+    xattr::remove(tmp.path(), "user.test").unwrap();
+    assert!(xattr::get(tmp.path(), "user.test").unwrap().is_none());
+    assert_eq!(
+        xattr::list(tmp.path())
+            .unwrap()
+            .filter(|x| x.as_bytes().starts_with(b"user."))
+            .count(),
+        0
+    );
+}
+
+#[test]
+#[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "macos"))]
+fn test_missing() {
+    assert!(xattr::get("/var/empty/does-not-exist", "user.test").is_err());
+}
+
+#[test]
+#[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "macos"))]
+fn test_multi() {
+    use std::os::unix::ffi::OsStrExt;
+    // Only works on "real" filesystems.
+    let tmp = tempfile_in("/var/tmp").unwrap();
+    let mut items: BTreeSet<_> = [
+        OsStr::new("user.test1"),
+        OsStr::new("user.test2"),
+        OsStr::new("user.test3"),
+    ].iter()
+        .cloned()
+        .collect();
+
+    for it in &items {
+        tmp.set_xattr(it, b"value").unwrap();
+    }
+    for it in tmp.list_xattr()
+        .unwrap()
+        .filter(|x| x.as_bytes().starts_with(&*b"user."))
+    {
+        assert!(items.remove(&*it));
+    }
+    assert!(items.is_empty());
+}