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

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

25 files changed, 1110 insertions, 0 deletions

diff --git a/vendor/fd-lock/.cargo-checksum.json b/vendor/fd-lock/.cargo-checksum.json
new file mode 100644
index 000000000..34474fd2f
--- /dev/null
+++ b/vendor/fd-lock/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"8a0f86066c7666bf8979819be2020a5e21b80507518e1b75a09520a0168184d5","LICENSE-APACHE":"b00ec75cd7ef2a62ff1f26c0ddafbc508282d15dce149506f983ce6c8e7a4876","LICENSE-MIT":"ce688e08d0454a032063ff701c4e88051ed89f0c5c9c391cbe58e4099769ae5d","README.md":"ede6ce06722fa6bc718ef44ba9605ef1ff4f0d13551dfb648f889c2d08826f01","src/lib.rs":"1bb896e8d6be4e0a344132cd3cbfd89b08a8ee84414be2151fe1ecbdba88cb6d","src/read_guard.rs":"09dec78e58bc222b195122158c0164f5b03a0bbf4beebff3a9dfa6171cd3919b","src/rw_lock.rs":"a5360aba83a03e25d7fee58b4e56ce8e18aaa360f6458a7b45b4a9af8fc85f4f","src/sys/mod.rs":"af808ccf3e9a2e480b2113915a9018bc5698b1156eec16ced69131ff22010a04","src/sys/unix/mod.rs":"af44a486cd53b0367b2466cf4e4240ad9ebfb77274ed7dd73a8b722be9f1fb0d","src/sys/unix/read_guard.rs":"debf4cbdbbbf5d1f31b2f420e7ef85cadb56d5d63b6be0101ff60970aa23af4d","src/sys/unix/rw_lock.rs":"695cf947892b4f6cf24ed80151d485edfc3ae48d1111df7e028f1590000ce1cd","src/sys/unix/write_guard.rs":"8b1249e51aba8e6812277856cb449e27433ff14c1e761c53e43a4fc81d79324d","src/sys/unsupported/mod.rs":"da50072981243d69b2f3cd43d0d314184d9fe32f4d1f83f9d65ffa56be591d35","src/sys/unsupported/read_guard.rs":"996e4137fd5f6a4ee586d3988f399c01886a4ff517caf605b0b15b15ec1d1921","src/sys/unsupported/rw_lock.rs":"0ab0291a20cd802099e9330140ad81778f60656185df1b3bd35b1aaabcd3476d","src/sys/unsupported/utils.rs":"c0c608a32b8686f4242d3639b8d490efcfbc2385910f369e1dac741fb173e83d","src/sys/unsupported/write_guard.rs":"b2c02e43c4a939370a65ec33b949246d4486118631e1178b79d8d8c83fc59d13","src/sys/windows/mod.rs":"299c760cfd51ac2905750b29ae9662fb5c637ad43edd7f0d738955d52002faa3","src/sys/windows/read_guard.rs":"67789ae766d2e29688f1e580bccb1bd49cb046462f5b88d6cc7f5519a67d261f","src/sys/windows/rw_lock.rs":"715da53c6593d56d94e1ebd901369c7036e21ae5d43d1bea466cc289e869ecc8","src/sys/windows/utils.rs":"908f71e686f835ccddfb338fdea22e56b58685a6b90036aea60bcfa693d19f39","src/sys/windows/write_guard.rs":"e8bce84cb22476cc3468f45a278260b6299f753c91174f702cfeb86aa358f0b6","src/write_guard.rs":"67a8f4328620f2f4f5f373115cad1cb6372e56a841480f67d6a96bf6a151a9cc","tests/test.rs":"a4ac6ed7ca76556da0e324bf32b4f47dde15b9c818963f7a88f41e07bc72994b"},"package":"e11dcc7e4d79a8c89b9ab4c6f5c30b1fc4a83c420792da3542fd31179ed5f517"}
\ No newline at end of file
diff --git a/vendor/fd-lock/Cargo.toml b/vendor/fd-lock/Cargo.toml
new file mode 100644
index 000000000..81e663819
--- /dev/null
+++ b/vendor/fd-lock/Cargo.toml
@@ -0,0 +1,53 @@
+# 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]
+edition = "2018"
+name = "fd-lock"
+version = "3.0.6"
+authors = ["Yoshua Wuyts <yoshuawuyts@gmail.com>"]
+description = "Advisory cross-platform lock on a file using a file descriptor to it."
+documentation = "https://docs.rs/fd-lock"
+readme = "README.md"
+keywords = [
+    "file",
+    "fd",
+    "lock",
+    "windows",
+    "unix",
+]
+categories = [
+    "filesystem",
+    "os",
+    "os::macos-apis",
+    "os::unix-apis",
+    "os::windows-apis",
+]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/yoshuawuyts/fd-lock"
+
+[dependencies.cfg-if]
+version = "1.0.0"
+
+[dev-dependencies.tempfile]
+version = "3.0.8"
+
+[target."cfg(unix)".dependencies.rustix]
+version = "0.35.6"
+features = ["fs"]
+
+[target."cfg(windows)".dependencies.windows-sys]
+version = "0.36.0"
+features = [
+    "Win32_Foundation",
+    "Win32_Storage_FileSystem",
+    "Win32_System_IO",
+]
diff --git a/vendor/fd-lock/LICENSE-APACHE b/vendor/fd-lock/LICENSE-APACHE
new file mode 100644
index 000000000..1fe151fe5
--- /dev/null
+++ b/vendor/fd-lock/LICENSE-APACHE
@@ -0,0 +1,190 @@
+                                 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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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2019 Yoshua Wuyts
+
+   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
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/fd-lock/LICENSE-MIT b/vendor/fd-lock/LICENSE-MIT
new file mode 100644
index 000000000..645b57f69
--- /dev/null
+++ b/vendor/fd-lock/LICENSE-MIT
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2019 Yoshua Wuyts
+
+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/fd-lock/README.md b/vendor/fd-lock/README.md
new file mode 100644
index 000000000..6720153af
--- /dev/null
+++ b/vendor/fd-lock/README.md
@@ -0,0 +1,72 @@
+# fd-lock
+[![crates.io version][1]][2] 
+[![downloads][5]][6] [![docs.rs docs][7]][8]
+
+Advisory cross-platform file locks using file descriptors. Adapted from
+[mafintosh/fd-lock].
+
+Note that advisory lock compliance is opt-in, and can freely be ignored by other
+parties. This means this crate __should never be used for security purposes__,
+but solely to coordinate file access.
+
+[mafintosh/fd-lock]: https://github.com/mafintosh/fd-lock
+
+- [Documentation][8]
+- [Crates.io][2]
+- [Releases][releases]
+
+## Examples
+__Basic usage__
+```rust
+use std::io::prelude::*;
+use std::fs::File;
+use fd_lock::RwLock;
+
+// Lock a file and write to it.
+let mut f = RwLock::new(File::open("foo.txt")?);
+write!(f.write()?, "chashu cat")?;
+
+// A lock can also be held across multiple operations.
+let mut f = f.write()?;
+write!(f, "nori cat")?;
+write!(f, "bird!")?;
+```
+
+## Installation
+```sh
+$ cargo add fd-lock
+```
+
+## Safety
+This crate uses `unsafe` on Windows to interface with `windows-sys`. All
+invariants have been carefully checked, and are manually enforced.
+
+## Contributing
+Want to join us? Check out our ["Contributing" guide][contributing] and take a
+look at some of these issues:
+
+- [Issues labeled "good first issue"][good-first-issue]
+- [Issues labeled "help wanted"][help-wanted]
+
+## References
+- [LockFile function - WDC](https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-lockfile)
+- [flock(2) - Linux Man Page](https://man7.org/linux/man-pages/man2/flock.2.html)
+- [`rustix::fs::flock`](https://docs.rs/rustix/*/rustix/fs/fn.flock.html)
+- [`windows_sys::Win32::Storage::FileSystem::LockFile`](https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Storage/FileSystem/fn.LockFile.html)
+
+## License
+[MIT](./LICENSE-MIT) OR [Apache-2.0](./LICENSE-APACHE)
+
+[1]: https://img.shields.io/crates/v/fd-lock.svg?style=flat-square
+[2]: https://crates.io/crates/fd-lock
+[3]: https://img.shields.io/travis/yoshuawuyts/fd-lock/master.svg?style=flat-square
+[4]: https://travis-ci.org/yoshuawuyts/fd-lock
+[5]: https://img.shields.io/crates/d/fd-lock.svg?style=flat-square
+[6]: https://crates.io/crates/fd-lock
+[7]: https://img.shields.io/badge/docs-latest-blue.svg?style=flat-square
+[8]: https://docs.rs/fd-lock
+
+[releases]: https://github.com/yoshuawuyts/fd-lock/releases
+[contributing]: https://github.com/yoshuawuyts/fd-lock/blob/master.github/CONTRIBUTING.md
+[good-first-issue]: https://github.com/yoshuawuyts/fd-lock/labels/good%20first%20issue
+[help-wanted]: https://github.com/yoshuawuyts/fd-lock/labels/help%20wanted
diff --git a/vendor/fd-lock/src/lib.rs b/vendor/fd-lock/src/lib.rs
new file mode 100644
index 000000000..9d3d6192b
--- /dev/null
+++ b/vendor/fd-lock/src/lib.rs
@@ -0,0 +1,43 @@
+//! Advisory reader-writer locks for files.
+//!
+//! # Notes on Advisory Locks
+//!
+//! "advisory locks" are locks which programs must opt-in to adhere to. This
+//! means that they can be used to coordinate file access, but not prevent
+//! access. Use this to coordinate file access between multiple instances of the
+//! same program. But do not use this to prevent actors from accessing or
+//! modifying files.
+//!
+//! # Example
+//!
+//! ```no_run
+//! # use std::io;
+//! use std::io::prelude::*;
+//! use std::fs::File;
+//! use fd_lock::RwLock;
+//!
+//! # fn main() -> io::Result<()> {
+//! // Lock a file and write to it.
+//! let mut f = RwLock::new(File::open("foo.txt")?);
+//! write!(f.write()?, "chashu cat")?;
+//!
+//! // A lock can also be held across multiple operations.
+//! let mut f = f.write()?;
+//! write!(f, "nori cat")?;
+//! write!(f, "bird!")?;
+//! # Ok(()) }
+//! ```
+
+#![forbid(future_incompatible)]
+#![deny(missing_debug_implementations, nonstandard_style)]
+#![cfg_attr(doc, warn(missing_docs, rustdoc::missing_doc_code_examples))]
+
+mod read_guard;
+mod rw_lock;
+mod write_guard;
+
+pub(crate) mod sys;
+
+pub use read_guard::RwLockReadGuard;
+pub use rw_lock::RwLock;
+pub use write_guard::RwLockWriteGuard;
diff --git a/vendor/fd-lock/src/read_guard.rs b/vendor/fd-lock/src/read_guard.rs
new file mode 100644
index 000000000..29ed06da3
--- /dev/null
+++ b/vendor/fd-lock/src/read_guard.rs
@@ -0,0 +1,43 @@
+use std::ops;
+
+use crate::sys;
+
+/// RAII structure used to release the shared read access of a lock when
+/// dropped.
+///
+/// This structure is created by the [`read`] and [`try_read`] methods on
+/// [`RwLock`].
+///
+/// [`read`]: crate::RwLock::read
+/// [`try_read`]: crate::RwLock::try_read
+/// [`RwLock`]: crate::RwLock
+///
+/// # Panics
+///
+/// Dropping this type may panic if the lock fails to unlock.
+#[must_use = "if unused the RwLock will immediately unlock"]
+#[derive(Debug)]
+pub struct RwLockReadGuard<'lock, T: sys::AsRaw> {
+    guard: sys::RwLockReadGuard<'lock, T>,
+}
+
+impl<'lock, T: sys::AsRaw> RwLockReadGuard<'lock, T> {
+    pub(crate) fn new(guard: sys::RwLockReadGuard<'lock, T>) -> Self {
+        Self { guard }
+    }
+}
+
+impl<T: sys::AsRaw> ops::Deref for RwLockReadGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        self.guard.deref()
+    }
+}
+
+/// Release the lock.
+impl<T: sys::AsRaw> Drop for RwLockReadGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {}
+}
diff --git a/vendor/fd-lock/src/rw_lock.rs b/vendor/fd-lock/src/rw_lock.rs
new file mode 100644
index 000000000..77f9d2231
--- /dev/null
+++ b/vendor/fd-lock/src/rw_lock.rs
@@ -0,0 +1,126 @@
+use crate::read_guard::RwLockReadGuard;
+use crate::sys;
+use crate::write_guard::RwLockWriteGuard;
+use std::io;
+
+/// Advisory reader-writer lock for files.
+///
+/// This type of lock allows a number of readers or at most one writer at any point
+/// in time. The write portion of this lock typically allows modification of the
+/// underlying data (exclusive access) and the read portion of this lock typically
+/// allows for read-only access (shared access).
+#[derive(Debug)]
+pub struct RwLock<T: sys::AsRaw> {
+    lock: sys::RwLock<T>,
+}
+
+impl<T: sys::AsRaw> RwLock<T> {
+    /// Create a new instance.
+    ///
+    /// # Examples
+    ///
+    /// ```no_run
+    /// use fd_lock::RwLock;
+    /// use std::fs::File;
+    ///
+    /// fn main() -> std::io::Result<()> {
+    ///     let mut f = RwLock::new(File::open("foo.txt")?);
+    ///     Ok(())
+    /// }
+    /// ```
+    #[inline]
+    pub fn new(inner: T) -> Self {
+        Self {
+            lock: sys::RwLock::new(inner),
+        }
+    }
+
+    /// Locks this lock with shared read access, blocking the current thread
+    /// until it can be acquired.
+    ///
+    /// The calling thread will be blocked until there are no more writers which
+    /// hold the lock. There may be other readers currently inside the lock when
+    /// this method returns. This method does not provide any guarantees with
+    /// respect to the ordering of whether contentious readers or writers will
+    /// acquire the lock first.
+    ///
+    /// Returns an RAII guard which will release this thread's shared access
+    /// once it is dropped.
+    ///
+    /// # Errors
+    ///
+    /// On Unix this may return an `ErrorKind::Interrupted` if the operation was
+    /// interrupted by a signal handler.
+    #[inline]
+    pub fn read(&self) -> io::Result<RwLockReadGuard<'_, T>> {
+        let guard = self.lock.read()?;
+        Ok(RwLockReadGuard::new(guard))
+    }
+
+    /// Attempts to acquire this lock with shared read access.
+    ///
+    /// If the access could not be granted at this time, then `Err` is returned.
+    /// Otherwise, an RAII guard is returned which will release the shared access
+    /// when it is dropped.
+    ///
+    /// This function does not block.
+    ///
+    /// This function does not provide any guarantees with respect to the ordering
+    /// of whether contentious readers or writers will acquire the lock first.
+    ///
+    /// # Errors
+    ///
+    /// If the lock is already held and `ErrorKind::WouldBlock` error is returned.
+    /// On Unix this may return an `ErrorKind::Interrupted` if the operation was
+    /// interrupted by a signal handler.
+    #[inline]
+    pub fn try_read(&self) -> io::Result<RwLockReadGuard<'_, T>> {
+        let guard = self.lock.try_read()?;
+        Ok(RwLockReadGuard::new(guard))
+    }
+
+    /// Locks this lock with exclusive write access, blocking the current thread
+    /// until it can be acquired.
+    ///
+    /// This function will not return while other writers or other readers
+    /// currently have access to the lock.
+    ///
+    /// Returns an RAII guard which will drop the write access of this rwlock
+    /// when dropped.
+    ///
+    /// # Errors
+    ///
+    /// On Unix this may return an `ErrorKind::Interrupted` if the operation was
+    /// interrupted by a signal handler.
+    #[inline]
+    pub fn write(&mut self) -> io::Result<RwLockWriteGuard<'_, T>> {
+        let guard = self.lock.write()?;
+        Ok(RwLockWriteGuard::new(guard))
+    }
+
+    /// Attempts to lock this lock with exclusive write access.
+    ///
+    /// If the lock could not be acquired at this time, then `Err` is returned.
+    /// Otherwise, an RAII guard is returned which will release the lock when
+    /// it is dropped.
+    ///
+    /// # Errors
+    ///
+    /// If the lock is already held and `ErrorKind::WouldBlock` error is returned.
+    /// On Unix this may return an `ErrorKind::Interrupted` if the operation was
+    /// interrupted by a signal handler.
+    #[inline]
+    pub fn try_write(&mut self) -> io::Result<RwLockWriteGuard<'_, T>> {
+        let guard = self.lock.try_write()?;
+        Ok(RwLockWriteGuard::new(guard))
+    }
+
+    /// Consumes this `RwLock`, returning the underlying data.
+    #[inline]
+    pub fn into_inner(self) -> T
+    where
+        T: Sized,
+    {
+        self.lock.into_inner()
+    }
+}
diff --git a/vendor/fd-lock/src/sys/mod.rs b/vendor/fd-lock/src/sys/mod.rs
new file mode 100644
index 000000000..3c6391e98
--- /dev/null
+++ b/vendor/fd-lock/src/sys/mod.rs
@@ -0,0 +1,17 @@
+use cfg_if::cfg_if;
+
+cfg_if! {
+    if #[cfg(unix)] {
+        mod unix;
+        pub use unix::*;
+        pub(crate) use std::os::unix::prelude::AsRawFd as AsRaw;
+    } else if #[cfg(windows)] {
+        mod windows;
+        pub use windows::*;
+        #[doc(no_inline)]
+        pub(crate) use std::os::windows::prelude::AsRawHandle as AsRaw;
+    } else {
+        mod unsupported;
+        pub use unsupported;
+    }
+}
diff --git a/vendor/fd-lock/src/sys/unix/mod.rs b/vendor/fd-lock/src/sys/unix/mod.rs
new file mode 100644
index 000000000..023e69187
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unix/mod.rs
@@ -0,0 +1,7 @@
+mod read_guard;
+mod rw_lock;
+mod write_guard;
+
+pub use read_guard::RwLockReadGuard;
+pub use rw_lock::RwLock;
+pub use write_guard::RwLockWriteGuard;
diff --git a/vendor/fd-lock/src/sys/unix/read_guard.rs b/vendor/fd-lock/src/sys/unix/read_guard.rs
new file mode 100644
index 000000000..6d6718789
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unix/read_guard.rs
@@ -0,0 +1,32 @@
+use rustix::fs::{flock, FlockOperation};
+use std::ops;
+use std::os::unix::io::AsRawFd;
+
+use super::RwLock;
+
+#[derive(Debug)]
+pub struct RwLockReadGuard<'lock, T: AsRawFd> {
+    lock: &'lock RwLock<T>,
+}
+
+impl<'lock, T: AsRawFd> RwLockReadGuard<'lock, T> {
+    pub(crate) fn new(lock: &'lock RwLock<T>) -> Self {
+        Self { lock }
+    }
+}
+
+impl<T: AsRawFd> ops::Deref for RwLockReadGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        &self.lock.inner
+    }
+}
+
+impl<T: AsRawFd> Drop for RwLockReadGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {
+        let _ = flock(&self.lock.as_fd(), FlockOperation::Unlock).ok();
+    }
+}
diff --git a/vendor/fd-lock/src/sys/unix/rw_lock.rs b/vendor/fd-lock/src/sys/unix/rw_lock.rs
new file mode 100644
index 000000000..c33ce5c78
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unix/rw_lock.rs
@@ -0,0 +1,70 @@
+use rustix::fd::BorrowedFd;
+use rustix::fs::{flock, FlockOperation};
+use std::io::{self, Error, ErrorKind};
+use std::os::unix::io::AsRawFd;
+
+use super::{RwLockReadGuard, RwLockWriteGuard};
+
+#[derive(Debug)]
+pub struct RwLock<T: AsRawFd> {
+    pub(crate) inner: T,
+}
+
+impl<T: AsRawFd> RwLock<T> {
+    #[inline]
+    pub fn new(inner: T) -> Self {
+        RwLock { inner }
+    }
+
+    #[inline]
+    pub fn write(&mut self) -> io::Result<RwLockWriteGuard<'_, T>> {
+        flock(&self.as_fd(), FlockOperation::LockExclusive)?;
+        Ok(RwLockWriteGuard::new(self))
+    }
+
+    #[inline]
+    pub fn try_write(&mut self) -> Result<RwLockWriteGuard<'_, T>, Error> {
+        flock(&self.as_fd(), FlockOperation::NonBlockingLockExclusive).map_err(|err| match err
+            .kind()
+        {
+            ErrorKind::AlreadyExists => ErrorKind::WouldBlock.into(),
+            _ => Error::from(err),
+        })?;
+        Ok(RwLockWriteGuard::new(self))
+    }
+
+    #[inline]
+    pub fn read(&self) -> io::Result<RwLockReadGuard<'_, T>> {
+        flock(&self.as_fd(), FlockOperation::LockShared)?;
+        Ok(RwLockReadGuard::new(self))
+    }
+
+    #[inline]
+    pub fn try_read(&self) -> Result<RwLockReadGuard<'_, T>, Error> {
+        flock(&self.as_fd(), FlockOperation::NonBlockingLockShared).map_err(|err| {
+            match err.kind() {
+                ErrorKind::AlreadyExists => ErrorKind::WouldBlock.into(),
+                _ => Error::from(err),
+            }
+        })?;
+        Ok(RwLockReadGuard::new(self))
+    }
+
+    #[inline]
+    pub fn into_inner(self) -> T
+    where
+        T: Sized,
+    {
+        self.inner
+    }
+
+    #[inline]
+    pub(crate) fn as_fd(&self) -> BorrowedFd<'_> {
+        // Safety: We assume that `self.inner`'s file descriptor is valid for
+        // at least the lifetime of `self`.
+        //
+        // Once I/O safety is stablized in std, we can switch the public API to
+        // use `AsFd` instead of `AsRawFd` and eliminate this `unsafe` block.
+        unsafe { BorrowedFd::borrow_raw(self.inner.as_raw_fd()) }
+    }
+}
diff --git a/vendor/fd-lock/src/sys/unix/write_guard.rs b/vendor/fd-lock/src/sys/unix/write_guard.rs
new file mode 100644
index 000000000..a12bdf97a
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unix/write_guard.rs
@@ -0,0 +1,39 @@
+use rustix::fs::{flock, FlockOperation};
+use std::ops;
+use std::os::unix::io::AsRawFd;
+
+use super::RwLock;
+
+#[derive(Debug)]
+pub struct RwLockWriteGuard<'lock, T: AsRawFd> {
+    lock: &'lock mut RwLock<T>,
+}
+
+impl<'lock, T: AsRawFd> RwLockWriteGuard<'lock, T> {
+    pub(crate) fn new(lock: &'lock mut RwLock<T>) -> Self {
+        Self { lock }
+    }
+}
+
+impl<T: AsRawFd> ops::Deref for RwLockWriteGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        &self.lock.inner
+    }
+}
+
+impl<T: AsRawFd> ops::DerefMut for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.lock.inner
+    }
+}
+
+impl<T: AsRawFd> Drop for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {
+        let _ = flock(&self.lock.as_fd(), FlockOperation::Unlock).ok();
+    }
+}
diff --git a/vendor/fd-lock/src/sys/unsupported/mod.rs b/vendor/fd-lock/src/sys/unsupported/mod.rs
new file mode 100644
index 000000000..9d7bd2cbd
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unsupported/mod.rs
@@ -0,0 +1,9 @@
+mod read_guard;
+mod rw_lock;
+mod write_guard;
+
+pub(crate) mod utils;
+
+pub use read_guard::RwLockReadGuard;
+pub use rw_lock::RwLock;
+pub use write_guard::RwLockWriteGuard;
diff --git a/vendor/fd-lock/src/sys/unsupported/read_guard.rs b/vendor/fd-lock/src/sys/unsupported/read_guard.rs
new file mode 100644
index 000000000..7d6b4c783
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unsupported/read_guard.rs
@@ -0,0 +1,31 @@
+use std::ops;
+use std::os::unix::io::AsRawFd;
+
+use super::RwLock;
+
+#[derive(Debug)]
+pub struct RwLockReadGuard<'lock, T: AsRawFd> {
+    lock: &'lock RwLock<T>,
+}
+
+impl<'lock, T: AsRawFd> RwLockReadGuard<'lock, T> {
+    pub(crate) fn new(lock: &'lock RwLock<T>) -> Self {
+        panic!("target unsupported")
+    }
+}
+
+impl<T: AsRawFd> ops::Deref for RwLockReadGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        panic!("target unsupported")
+    }
+}
+
+impl<T: AsRawFd> Drop for RwLockReadGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {
+        panic!("target unsupported")
+    }
+}
diff --git a/vendor/fd-lock/src/sys/unsupported/rw_lock.rs b/vendor/fd-lock/src/sys/unsupported/rw_lock.rs
new file mode 100644
index 000000000..fb11da84b
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unsupported/rw_lock.rs
@@ -0,0 +1,44 @@
+use std::io::{self, Error, ErrorKind};
+use std::os::unix::io::AsRawFd;
+
+use super::{RwLockReadGuard, RwLockWriteGuard};
+
+#[derive(Debug)]
+pub struct RwLock<T: AsRawFd> {
+    pub(crate) inner: T,
+}
+
+impl<T: AsRawFd> RwLock<T> {
+    #[inline]
+    pub fn new(inner: T) -> Self {
+        panic!("target unsupported")
+    }
+
+    #[inline]
+    pub fn write(&mut self) -> io::Result<RwLockWriteGuard<'_, T>> {
+        panic!("target unsupported")
+    }
+
+    #[inline]
+    pub fn try_write(&mut self) -> Result<RwLockWriteGuard<'_, T>, Error> {
+        panic!("target unsupported")
+    }
+
+    #[inline]
+    pub fn read(&self) -> io::Result<RwLockReadGuard<'_, T>> {
+        panic!("target unsupported")
+    }
+
+    #[inline]
+    pub fn try_read(&self) -> Result<RwLockReadGuard<'_, T>, Error> {
+        panic!("target unsupported")
+    }
+
+    #[inline]
+    pub fn into_inner(self) -> T
+    where
+        T: Sized,
+    {
+        panic!("target unsupported")
+    }
+}
diff --git a/vendor/fd-lock/src/sys/unsupported/utils.rs b/vendor/fd-lock/src/sys/unsupported/utils.rs
new file mode 100644
index 000000000..191dd0c5c
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unsupported/utils.rs
@@ -0,0 +1,9 @@
+use std::io;
+use std::os::raw::c_int;
+
+pub(crate) fn syscall(int: c_int) -> io::Result<()> {
+    match int {
+        0 => Ok(()),
+        _ => Err(io::Error::last_os_error()),
+    }
+}
diff --git a/vendor/fd-lock/src/sys/unsupported/write_guard.rs b/vendor/fd-lock/src/sys/unsupported/write_guard.rs
new file mode 100644
index 000000000..19727c307
--- /dev/null
+++ b/vendor/fd-lock/src/sys/unsupported/write_guard.rs
@@ -0,0 +1,38 @@
+use std::ops;
+use std::os::unix::io::AsRawFd;
+
+use super::RwLock;
+
+#[derive(Debug)]
+pub struct RwLockWriteGuard<'lock, T: AsRawFd> {
+    lock: &'lock mut RwLock<T>,
+}
+
+impl<'lock, T: AsRawFd> RwLockWriteGuard<'lock, T> {
+    pub(crate) fn new(lock: &'lock mut RwLock<T>) -> Self {
+        panic!("target unsupported")
+    }
+}
+
+impl<T: AsRawFd> ops::Deref for RwLockWriteGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        panic!("target unsupported")
+    }
+}
+
+impl<T: AsRawFd> ops::DerefMut for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        panic!("target unsupported")
+    }
+}
+
+impl<T: AsRawFd> Drop for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {
+        panic!("target unsupported")
+    }
+}
diff --git a/vendor/fd-lock/src/sys/windows/mod.rs b/vendor/fd-lock/src/sys/windows/mod.rs
new file mode 100644
index 000000000..dafbd31ad
--- /dev/null
+++ b/vendor/fd-lock/src/sys/windows/mod.rs
@@ -0,0 +1,8 @@
+mod read_guard;
+mod rw_lock;
+mod utils;
+mod write_guard;
+
+pub use read_guard::RwLockReadGuard;
+pub use rw_lock::RwLock;
+pub use write_guard::RwLockWriteGuard;
diff --git a/vendor/fd-lock/src/sys/windows/read_guard.rs b/vendor/fd-lock/src/sys/windows/read_guard.rs
new file mode 100644
index 000000000..28f09bb95
--- /dev/null
+++ b/vendor/fd-lock/src/sys/windows/read_guard.rs
@@ -0,0 +1,31 @@
+use windows_sys::Win32::Foundation::HANDLE;
+use windows_sys::Win32::Storage::FileSystem::UnlockFile;
+
+use std::ops;
+use std::os::windows::prelude::*;
+
+use super::utils::syscall;
+use super::RwLock;
+
+#[derive(Debug)]
+pub struct RwLockReadGuard<'lock, T: AsRawHandle> {
+    pub(crate) lock: &'lock RwLock<T>,
+}
+
+impl<T: AsRawHandle> ops::Deref for RwLockReadGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        &self.lock.inner
+    }
+}
+
+impl<T: AsRawHandle> Drop for RwLockReadGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {
+        let handle = self.lock.inner.as_raw_handle() as HANDLE;
+        syscall(unsafe { UnlockFile(handle, 0, 0, 1, 0) })
+            .expect("Could not unlock the file descriptor");
+    }
+}
diff --git a/vendor/fd-lock/src/sys/windows/rw_lock.rs b/vendor/fd-lock/src/sys/windows/rw_lock.rs
new file mode 100644
index 000000000..778b79100
--- /dev/null
+++ b/vendor/fd-lock/src/sys/windows/rw_lock.rs
@@ -0,0 +1,72 @@
+use std::io::{self, Error, ErrorKind};
+use std::os::windows::io::AsRawHandle;
+
+use windows_sys::Win32::Foundation::HANDLE;
+use windows_sys::Win32::Storage::FileSystem::{
+    LockFileEx, LOCKFILE_EXCLUSIVE_LOCK, LOCKFILE_FAIL_IMMEDIATELY,
+};
+
+use super::utils::{syscall, Overlapped};
+use super::{RwLockReadGuard, RwLockWriteGuard};
+
+#[derive(Debug)]
+pub struct RwLock<T: AsRawHandle> {
+    pub(crate) inner: T,
+}
+
+impl<T: AsRawHandle> RwLock<T> {
+    #[inline]
+    pub fn new(inner: T) -> Self {
+        RwLock { inner }
+    }
+
+    #[inline]
+    pub fn read(&self) -> io::Result<RwLockReadGuard<'_, T>> {
+        // See: https://stackoverflow.com/a/9186532, https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-lockfileex
+        let handle = self.inner.as_raw_handle() as HANDLE;
+        let overlapped = Overlapped::zero();
+        let flags = 0;
+        syscall(unsafe { LockFileEx(handle, flags, 0, 1, 0, overlapped.raw()) })?;
+        Ok(RwLockReadGuard { lock: self })
+    }
+
+    #[inline]
+    pub fn try_read(&self) -> io::Result<RwLockReadGuard<'_, T>> {
+        let handle = self.inner.as_raw_handle() as HANDLE;
+        let overlapped = Overlapped::zero();
+        let flags = LOCKFILE_FAIL_IMMEDIATELY;
+
+        syscall(unsafe { LockFileEx(handle, flags, 0, 1, 0, overlapped.raw()) })
+            .map_err(|_| Error::from(ErrorKind::WouldBlock))?;
+        Ok(RwLockReadGuard { lock: self })
+    }
+
+    #[inline]
+    pub fn write(&mut self) -> io::Result<RwLockWriteGuard<'_, T>> {
+        // See: https://stackoverflow.com/a/9186532, https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-lockfileex
+        let handle = self.inner.as_raw_handle() as HANDLE;
+        let overlapped = Overlapped::zero();
+        let flags = LOCKFILE_EXCLUSIVE_LOCK;
+        syscall(unsafe { LockFileEx(handle, flags, 0, 1, 0, overlapped.raw()) })?;
+        Ok(RwLockWriteGuard { lock: self })
+    }
+
+    #[inline]
+    pub fn try_write(&mut self) -> io::Result<RwLockWriteGuard<'_, T>> {
+        let handle = self.inner.as_raw_handle() as HANDLE;
+        let overlapped = Overlapped::zero();
+        let flags = LOCKFILE_FAIL_IMMEDIATELY | LOCKFILE_EXCLUSIVE_LOCK;
+
+        syscall(unsafe { LockFileEx(handle, flags, 0, 1, 0, overlapped.raw()) })
+            .map_err(|_| Error::from(ErrorKind::WouldBlock))?;
+        Ok(RwLockWriteGuard { lock: self })
+    }
+
+    #[inline]
+    pub fn into_inner(self) -> T
+    where
+        T: Sized,
+    {
+        self.inner
+    }
+}
diff --git a/vendor/fd-lock/src/sys/windows/utils.rs b/vendor/fd-lock/src/sys/windows/utils.rs
new file mode 100644
index 000000000..43656a083
--- /dev/null
+++ b/vendor/fd-lock/src/sys/windows/utils.rs
@@ -0,0 +1,33 @@
+use std::io;
+use std::mem;
+
+use windows_sys::Win32::Foundation::BOOL;
+use windows_sys::Win32::System::IO::OVERLAPPED;
+
+/// A wrapper around `OVERLAPPED` to provide "rustic" accessors and
+/// initializers.
+pub(crate) struct Overlapped(OVERLAPPED);
+
+impl Overlapped {
+    /// Creates a new zeroed out instance of an overlapped I/O tracking state.
+    ///
+    /// This is suitable for passing to methods which will then later get
+    /// notified via an I/O Completion Port.
+    pub(crate) fn zero() -> Overlapped {
+        Overlapped(unsafe { mem::zeroed() })
+    }
+
+    /// Gain access to the raw underlying data
+    pub(crate) fn raw(&self) -> *mut OVERLAPPED {
+        &self.0 as *const _ as *mut _
+    }
+}
+
+/// Convert a system call which returns a `BOOL` to an `io::Result`.
+pub(crate) fn syscall(status: BOOL) -> std::io::Result<()> {
+    if status == 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(())
+    }
+}
diff --git a/vendor/fd-lock/src/sys/windows/write_guard.rs b/vendor/fd-lock/src/sys/windows/write_guard.rs
new file mode 100644
index 000000000..5494bd99e
--- /dev/null
+++ b/vendor/fd-lock/src/sys/windows/write_guard.rs
@@ -0,0 +1,38 @@
+use windows_sys::Win32::Foundation::HANDLE;
+use windows_sys::Win32::Storage::FileSystem::UnlockFile;
+
+use std::ops;
+use std::os::windows::prelude::*;
+
+use super::utils::syscall;
+use super::RwLock;
+
+#[derive(Debug)]
+pub struct RwLockWriteGuard<'lock, T: AsRawHandle> {
+    pub(crate) lock: &'lock mut RwLock<T>,
+}
+
+impl<T: AsRawHandle> ops::Deref for RwLockWriteGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        &self.lock.inner
+    }
+}
+
+impl<T: AsRawHandle> ops::DerefMut for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.lock.inner
+    }
+}
+
+impl<T: AsRawHandle> Drop for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {
+        let handle = self.lock.inner.as_raw_handle() as HANDLE;
+        syscall(unsafe { UnlockFile(handle, 0, 0, 1, 0) })
+            .expect("Could not unlock the file descriptor");
+    }
+}
diff --git a/vendor/fd-lock/src/write_guard.rs b/vendor/fd-lock/src/write_guard.rs
new file mode 100644
index 000000000..e218e3842
--- /dev/null
+++ b/vendor/fd-lock/src/write_guard.rs
@@ -0,0 +1,50 @@
+use std::ops;
+
+use crate::sys;
+
+/// RAII structure used to release the exclusive write access of a lock when
+/// dropped.
+///
+/// This structure is created by the [`write`] and [`try_write`] methods
+/// on [`RwLock`].
+///
+/// [`write`]: crate::RwLock::write
+/// [`try_write`]: crate::RwLock::try_write
+/// [`RwLock`]: crate::RwLock
+///
+/// # Panics
+///
+/// Dropping this type may panic if the lock fails to unlock.
+#[must_use = "if unused the RwLock will immediately unlock"]
+#[derive(Debug)]
+pub struct RwLockWriteGuard<'lock, T: sys::AsRaw> {
+    guard: sys::RwLockWriteGuard<'lock, T>,
+}
+
+impl<'lock, T: sys::AsRaw> RwLockWriteGuard<'lock, T> {
+    pub(crate) fn new(guard: sys::RwLockWriteGuard<'lock, T>) -> Self {
+        Self { guard }
+    }
+}
+
+impl<T: sys::AsRaw> ops::Deref for RwLockWriteGuard<'_, T> {
+    type Target = T;
+
+    #[inline]
+    fn deref(&self) -> &Self::Target {
+        self.guard.deref()
+    }
+}
+
+impl<T: sys::AsRaw> ops::DerefMut for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        self.guard.deref_mut()
+    }
+}
+
+/// Release the lock.
+impl<T: sys::AsRaw> Drop for RwLockWriteGuard<'_, T> {
+    #[inline]
+    fn drop(&mut self) {}
+}
diff --git a/vendor/fd-lock/tests/test.rs b/vendor/fd-lock/tests/test.rs
new file mode 100644
index 000000000..35fd5b33b
--- /dev/null
+++ b/vendor/fd-lock/tests/test.rs
@@ -0,0 +1,33 @@
+use fd_lock::RwLock;
+use std::fs::File;
+use std::io::ErrorKind;
+
+use tempfile::tempdir;
+
+#[test]
+fn double_read_lock() {
+    let dir = tempdir().unwrap();
+    let path = dir.path().join("lockfile");
+
+    let l0 = RwLock::new(File::create(&path).unwrap());
+    let l1 = RwLock::new(File::open(path).unwrap());
+
+    let _g0 = l0.try_read().unwrap();
+    let _g1 = l1.try_read().unwrap();
+}
+
+#[test]
+fn double_write_lock() {
+    let dir = tempdir().unwrap();
+    let path = dir.path().join("lockfile");
+
+    let mut l0 = RwLock::new(File::create(&path).unwrap());
+    let mut l1 = RwLock::new(File::open(path).unwrap());
+
+    let g0 = l0.try_write().unwrap();
+
+    let err = l1.try_write().unwrap_err();
+    assert!(matches!(err.kind(), ErrorKind::WouldBlock));
+
+    drop(g0);
+}