All notable changes to this project will be documented in this file.This project adheres to [Semantic Versioning](https://semver.org/).# Change Log## [0.29.0] - 2024-05-24### Added- Add `getregset()/setregset()` for Linux/glibc/x86/x86_64/aarch64/riscv64 and  `getregs()/setregs()` for Linux/glibc/aarch64/riscv64  ([#2044](https://github.com/nix-rust/nix/pull/2044))- Add socket option Ipv6Ttl for apple targets.  ([#2287](https://github.com/nix-rust/nix/pull/2287))- Add socket option UtunIfname.  ([#2325](https://github.com/nix-rust/nix/pull/2325))- make SigAction repr(transparent) & can be converted to the libc raw type  ([#2326](https://github.com/nix-rust/nix/pull/2326))- Add `From` trait implementation for conversions between `sockaddr_in` and  `SockaddrIn`, `sockaddr_in6` and `SockaddrIn6`  ([#2328](https://github.com/nix-rust/nix/pull/2328))- Add socket option ReusePortLb for FreeBSD.  ([#2332](https://github.com/nix-rust/nix/pull/2332))- Added support for openat2 on linux.  ([#2339](https://github.com/nix-rust/nix/pull/2339))- Add if_indextoname function.  ([#2340](https://github.com/nix-rust/nix/pull/2340))- Add `mount` and `unmount` API for apple targets.  ([#2347](https://github.com/nix-rust/nix/pull/2347))- Added `_PC_MIN_HOLE_SIZE` for `pathconf` and `fpathconf`.  ([#2349](https://github.com/nix-rust/nix/pull/2349))- Added `impl AsFd for pty::PtyMaster`  ([#2355](https://github.com/nix-rust/nix/pull/2355))- Add `open` flag `O_SEARCH` to AIX, Empscripten, FreeBSD, Fuchsia, solarish,  WASI ([#2374](https://github.com/nix-rust/nix/pull/2374))- Add prctl function `prctl_set_vma_anon_name` for Linux/Android.  ([#2378](https://github.com/nix-rust/nix/pull/2378))- Add `sync(2)` for `apple_targets/solarish/haiku/aix/hurd`, `syncfs(2)` for  `hurd` and `fdatasync(2)` for `aix/hurd`  ([#2379](https://github.com/nix-rust/nix/pull/2379))- Add fdatasync support for Apple targets.  ([#2380](https://github.com/nix-rust/nix/pull/2380))- Add `fcntl::OFlag::O_PATH` for FreeBSD and Fuchsia  ([#2382](https://github.com/nix-rust/nix/pull/2382))- Added `PathconfVar::MIN_HOLE_SIZE` for apple_targets.  ([#2388](https://github.com/nix-rust/nix/pull/2388))- Add `open` flag `O_SEARCH` to apple_targets  ([#2391](https://github.com/nix-rust/nix/pull/2391))- `O_DSYNC` may now be used with `aio_fsync` and `fcntl` on FreeBSD.  ([#2404](https://github.com/nix-rust/nix/pull/2404))- Added `Flock::relock` for upgrading and downgrading locks.  ([#2407](https://github.com/nix-rust/nix/pull/2407))### Changed- Change the `ForkptyResult` type to the following repr so that the  uninitialized  `master` field won't be accessed in the child process:  ```rs  pub enum ForkptyResult {      Parent {          child: Pid,          master: OwnedFd,      },      Child,  }  ``` ([#2315](https://github.com/nix-rust/nix/pull/2315))- Updated `cfg_aliases` dependency from version 0.1 to 0.2  ([#2322](https://github.com/nix-rust/nix/pull/2322))- Change the signature of `ptrace::write` and `ptrace::write_user` to make them  safe ([#2324](https://github.com/nix-rust/nix/pull/2324))- Allow use of `SignalFd` through shared reference  Like with many other file descriptors, concurrent use of signalfds is safe.  Changing the signal mask of and reading signals from a signalfd can now be  done  with the `SignalFd` API even if other references to it exist.  ([#2367](https://github.com/nix-rust/nix/pull/2367))- Changed tee, splice and vmsplice RawFd arguments to AsFd.  ([#2387](https://github.com/nix-rust/nix/pull/2387))- Added I/O safety to the sys/aio module.  Most functions that previously  accepted a `AsRawFd` argument now accept an `AsFd` instead.  ([#2401](https://github.com/nix-rust/nix/pull/2401))- `RecvMsg::cmsgs()` now returns a `Result`, and checks that cmsgs were not  truncated. ([#2413](https://github.com/nix-rust/nix/pull/2413))### Fixed- No longer panics when the `fanotify` queue overflows.  ([#2399](https://github.com/nix-rust/nix/pull/2399))- Fixed ControlMessageOwned::UdpGroSegments wrapped type from u16 to i32 to  reflect the used kernel's one.  ([#2406](https://github.com/nix-rust/nix/pull/2406))## [0.28.0] - 2024-02-24### Added- Added `mkdtemp` wrapper ([#1297](https://github.com/nix-rust/nix/pull/1297))- Add associated constants `UTIME_OMIT` `UTIME_NOW` for `TimeSpec`  ([#1879](https://github.com/nix-rust/nix/pull/1879))- Added `EventFd` type. ([#1945](https://github.com/nix-rust/nix/pull/1945))- - Added `impl From<Signal> for SigSet`.  - Added `impl std::ops::BitOr for SigSet`.  - Added `impl std::ops::BitOr for Signal`.  - Added `impl std::ops::BitOr<Signal> for SigSet`  ([#1959](https://github.com/nix-rust/nix/pull/1959))- Added `TlsGetRecordType` control message type and corresponding enum for  linux ([#2065](https://github.com/nix-rust/nix/pull/2065))- Added `Ipv6HopLimit` to `::nix::sys::socket::ControlMessage` for Linux,  MacOS, FreeBSD, DragonflyBSD, Android, iOS and Haiku.  ([#2074](https://github.com/nix-rust/nix/pull/2074))- Added `Icmp` and `IcmpV6` to `SockProtocol`  ([#2103](https://github.com/nix-rust/nix/pull/2103))- Added rfork support for FreeBSD in `unistd`  ([#2121](https://github.com/nix-rust/nix/pull/2121))- Added `MapFlags::map_hugetlb_with_size_log2` method for Linux targets  ([#2125](https://github.com/nix-rust/nix/pull/2125))- Added `mmap_anonymous` function  ([#2127](https://github.com/nix-rust/nix/pull/2127))- Added `mips32r6` and `mips64r6` support for signal, ioctl and ptrace  ([#2138](https://github.com/nix-rust/nix/pull/2138))- Added `F_GETPATH` FcntlFlags entry on Apple/NetBSD/DragonflyBSD for  `::nix::fcntl`. ([#2142](https://github.com/nix-rust/nix/pull/2142))- Added `F_KINFO` FcntlFlags entry on FreeBSD for `::nix::fcntl`.  ([#2152](https://github.com/nix-rust/nix/pull/2152))- Added `F_GETPATH_NOFIRMLINK` and `F_BARRIERFSYNC` FcntlFlags entry  on Apple for `::nix::fcntl`.  ([#2155](https://github.com/nix-rust/nix/pull/2155))- Added newtype `Flock` to automatically unlock a held flock upon drop.  Added `Flockable` trait to represent valid types for `Flock`.  ([#2170](https://github.com/nix-rust/nix/pull/2170))- Added `SetSockOpt` impls to enable Linux Kernel TLS on a TCP socket and to  import TLS parameters. ([#2175](https://github.com/nix-rust/nix/pull/2175))- - Added the `::nix::sys::socket::SocketTimestamp` enum for configuring the  `TsClock` (a.k.a `SO_TS_CLOCK`) sockopt  - Added FreeBSD's `ScmRealtime` and `ScmMonotonic` as new options in  `::nix::sys::socket::ControlMessageOwned`  ([#2187](https://github.com/nix-rust/nix/pull/2187))- Added new fanotify API: wrappers for `fanotify_init` and `fanotify_mark`  ([#2194](https://github.com/nix-rust/nix/pull/2194))- Added `SpecialCharacterindices` support for haiku.  ([#2195](https://github.com/nix-rust/nix/pull/2195))- Added `sys::sendfile` support for solaris/illumos.  ([#2198](https://github.com/nix-rust/nix/pull/2198))- impl Display for InterfaceFlags  ([#2206](https://github.com/nix-rust/nix/pull/2206))- Added `sendfilev` in sys::sendfile for solarish  ([#2207](https://github.com/nix-rust/nix/pull/2207))- Added `fctrl::SealFlag::F_SEAL_FUTURE_WRITE`  ([#2213](https://github.com/nix-rust/nix/pull/2213))- Added `Ipv6MulticastHops` as socket option to set and read.  ([#2234](https://github.com/nix-rust/nix/pull/2234))- Enable `ControlMessageOwned::Ipv4RecvIf` and  `ControlMessageOwned::Ipv4RecvDstAddr` for DragonFlyBSD  ([#2240](https://github.com/nix-rust/nix/pull/2240))- `ClockId::set_time()` and `time::clock_settime()` are now enabled on macOS  ([#2241](https://github.com/nix-rust/nix/pull/2241))- Added `IpBindAddressNoPort` sockopt to support `IP_BIND_ADDRESS_NO_PORT`  available on linux. ([#2244](https://github.com/nix-rust/nix/pull/2244))- Enable `MapFlags::map_hugetlb_with_size_log2` method for Android/Fuchsia  ([#2245](https://github.com/nix-rust/nix/pull/2245))- Added `TcpFastOpenConnect` sockopt to support `TCP_FASTOPEN_CONNECT`  available on linux. ([#2247](https://github.com/nix-rust/nix/pull/2247))- Add `reboot(2)` for OpenBSD/NetBSD  ([#2251](https://github.com/nix-rust/nix/pull/2251))- Added new `MemFdCreateFlag` constants to `sys::memfd` on Linux and Android  related to hugetlbfs support.  ([#2252](https://github.com/nix-rust/nix/pull/2252))- Expose the inner fd of `Kqueue` through:  * impl AsFd for Kqueue  * impl From\<Kqueue\> for OwnedFd  ([#2258](https://github.com/nix-rust/nix/pull/2258))- Added `sys::eventfd` support on FreeBSD  ([#2259](https://github.com/nix-rust/nix/pull/2259))- Added `MmapFlags::MAP_FIXED` constant in `sys::mman` for netbsd and openbsd  ([#2260](https://github.com/nix-rust/nix/pull/2260))- Added the `SO_LISTENQLIMIT` sockopt.  ([#2263](https://github.com/nix-rust/nix/pull/2263))- Enable the `AT_EMPTY_PATH` flag for the `fchownat()` function  ([#2267](https://github.com/nix-rust/nix/pull/2267))- Add `AtFlags::AT_EMPTY_PATH` for FreeBSD and Hurd  ([#2270](https://github.com/nix-rust/nix/pull/2270))- Enable `OFlag::O_DIRECTORY for Solarish  ([#2275](https://github.com/nix-rust/nix/pull/2275))- Added the `Backlog` wrapper type for the `listen` call.  ([#2276](https://github.com/nix-rust/nix/pull/2276))- Add `clock_nanosleep()` ([#2277](https://github.com/nix-rust/nix/pull/2277))- Enabled `O_DIRECT` in `fcntl::OFlags` for solarish  ([#2278](https://github.com/nix-rust/nix/pull/2278))- Added a new API sigsuspend.  ([#2279](https://github.com/nix-rust/nix/pull/2279))- - Added `errno::Errno::set` function  - Added `errno::Errno::set_raw` function  - Added `errno::Errno::last_raw` function  - Added `errno::Errno::from_raw` function  ([#2283](https://github.com/nix-rust/nix/pull/2283))- Enable the `AT_EMPTY_PATH` flag for the `linkat()` function  ([#2284](https://github.com/nix-rust/nix/pull/2284))- Enable unistd::{sync, syncfs} for Android  ([#2296](https://github.com/nix-rust/nix/pull/2296))### Changed- `poll` now takes `PollTimeout` replacing `libc::c_int`.  ([#1876](https://github.com/nix-rust/nix/pull/1876))- Deprecated `sys::eventfd::eventfd`.  ([#1945](https://github.com/nix-rust/nix/pull/1945))- `mmap`, `mmap_anonymous`, `munmap`, `mremap`, `madvise`, `msync`, `mprotect`,  `munlock` and `mlock` updated to use `NonNull`.  ([#2000](https://github.com/nix-rust/nix/pull/2000))- `mmap` function now accepts `F` instead of `Option<F>`  ([#2127](https://github.com/nix-rust/nix/pull/2127))- `PollFd::new` now takes a `BorrowedFd` argument, with relaxed lifetime    requirements relative to the previous version.  ([#2134](https://github.com/nix-rust/nix/pull/2134))- `FdSet::{insert, remove, contains}` now take `BorrowedFd` arguments, and have  relaxed lifetime requirements relative to 0.27.1.  ([#2136](https://github.com/nix-rust/nix/pull/2136))- The following APIs now take an implementation of `AsFd` rather than a    `RawFd`:    - `unistd::tcgetpgrp`    - `unistd::tcsetpgrp`    - `unistd::fpathconf`    - `unistd::ttyname`    - `unistd::getpeereid` ([#2137](https://github.com/nix-rust/nix/pull/2137))- Changed `openat()` and `Dir::openat()`, now take optional `dirfd`s  ([#2139](https://github.com/nix-rust/nix/pull/2139))- The MSRV is now 1.69 ([#2144](https://github.com/nix-rust/nix/pull/2144))- Changed function `SockaddrIn::ip()` to return `net::Ipv4Addr` and refactored  `SocketAddrV6::ip()` to be `const`  ([#2151](https://github.com/nix-rust/nix/pull/2151))- The following APIs now take optional `dirfd`s:  - `readlinkat()`  - `fstatat()`  - `mknodat()`  - `mkdirat()`  - `execveat()`  ([#2157](https://github.com/nix-rust/nix/pull/2157))- `Epoll::wait` now takes `EpollTimeout` replacing `isize`.  ([#2202](https://github.com/nix-rust/nix/pull/2202))- - Deprecated `errno::errno()` function (use `Errno::last_raw()`)  - Deprecated `errno::from_i32()` function (use `Errno::from_raw()`)  - Deprecated `errno::Errno::from_i32()` function (use `Errno::from_raw()`)  ([#2283](https://github.com/nix-rust/nix/pull/2283))### Fixed- Fix `SigSet` incorrect implementation of `Eq`, `PartialEq` and `Hash`  ([#1946](https://github.com/nix-rust/nix/pull/1946))- Fixed `::sys::socket::sockopt::IpMulticastTtl` by fixing the value of optlen  passed to `libc::setsockopt` and added tests.  ([#2072](https://github.com/nix-rust/nix/pull/2072))- Fixed the function signature of `recvmmsg`, potentially causing UB  ([#2119](https://github.com/nix-rust/nix/pull/2119))- Fix `SignalFd::set_mask`.  In 0.27.0 it would actually close the file  descriptor. ([#2141](https://github.com/nix-rust/nix/pull/2141))- Fixed UnixAddr::new for haiku, it did not record the `sun_len` value as  needed.  Fixed `sys::socket::addr::from_raw_parts` and  `sys::socket::Sockaddrlike::len` build for solaris.  ([#2242](https://github.com/nix-rust/nix/pull/2242))- Fixed solaris build globally.  ([#2248](https://github.com/nix-rust/nix/pull/2248))- Changed the `dup3` wrapper to perform a real call to `dup3` instead of  emulating it via `dup2` and `fcntl` to get rid of race condition  ([#2268](https://github.com/nix-rust/nix/pull/2268))- Fixed `::unistd::Group::members` using read_unaligned to avoid crash on  misaligned pointers ([#2311](https://github.com/nix-rust/nix/pull/2311))### Removed- The `FchownatFlags` type has been deprecated, please use `AtFlags` instead.  ([#2267](https://github.com/nix-rust/nix/pull/2267))- Removed the `dup3` wrapper on macOS, which was emulated via `dup2` and  `fcntl` and could cause a race condition. The `dup3` system call is not  supported on macOS. ([#2268](https://github.com/nix-rust/nix/pull/2268))- The `LinkatFlags` type has been deprecated, please use `AtFlags` instead.  ([#2284](https://github.com/nix-rust/nix/pull/2284))## [0.27.1] - 2023-08-28### Fixed- Fixed generating the documentation on docs.rs.  ([#2111](https://github.com/nix-rust/nix/pull/2111))## [0.27.0] - 2023-08-28### Added- Added `AT_EACCESS` to `AtFlags` on all platforms but android  ([#1995](https://github.com/nix-rust/nix/pull/1995))- Add `PF_ROUTE` to `SockType` on macOS, iOS, all of the BSDs, Fuchsia, Haiku, Illumos.  ([#1867](https://github.com/nix-rust/nix/pull/1867))- Added `nix::ucontext` module on `aarch64-unknown-linux-gnu`.  (#[1662](https://github.com/nix-rust/nix/pull/1662))- Added `CanRaw` to `SockProtocol` and `CanBcm` as a separate `SocProtocol` constant.  ([#1912](https://github.com/nix-rust/nix/pull/1912))- Added `Generic` and `NFLOG` to `SockProtocol`.  ([#2092](https://github.com/nix-rust/nix/pull/2092))- Added `mq_timedreceive` to `::nix::mqueue`.  ([#1966])(https://github.com/nix-rust/nix/pull/1966)- Added `LocalPeerPid` to `nix::sys::socket::sockopt` for macOS. ([#1967](https://github.com/nix-rust/nix/pull/1967))- Added `TFD_TIMER_CANCEL_ON_SET` to `::nix::sys::time::TimerSetTimeFlags` on Linux and Android.  ([#2040](https://github.com/nix-rust/nix/pull/2040))- Added `SOF_TIMESTAMPING_OPT_ID` and `SOF_TIMESTAMPING_OPT_TSONLY` to `nix::sys::socket::TimestampingFlag`.  ([#2048](https://github.com/nix-rust/nix/pull/2048))- Enabled socket timestamping options on Android. ([#2077](https://github.com/nix-rust/nix/pull/2077))- Added vsock support for macOS ([#2056](https://github.com/nix-rust/nix/pull/2056))- Added `SO_SETFIB` and `SO_USER_COOKIE` to `nix::sys::socket::sockopt` for FreeBSD.  ([#2085](https://github.com/nix-rust/nix/pull/2085))- Added `SO_RTABLE` for OpenBSD and `SO_ACCEPTFILTER` for FreeBSD/NetBSD to `nix::sys::socket::sockopt`.  ([#2085](https://github.com/nix-rust/nix/pull/2085))- Added `MSG_WAITFORONE` to `MsgFlags` on Android, Fuchsia, Linux, NetBSD,  FreeBSD, OpenBSD, and Solaris.  ([#2014](https://github.com/nix-rust/nix/pull/2014))- Added `SO_TS_CLOCK` for FreeBSD to `nix::sys::socket::sockopt`.  ([#2093](https://github.com/nix-rust/nix/pull/2093))- Added support for prctl in Linux.  (#[1550](https://github.com/nix-rust/nix/pull/1550))- `nix::socket` and `nix::select` are now available on Redox.  ([#2012](https://github.com/nix-rust/nix/pull/2012))- Implemented AsFd, AsRawFd, FromRawFd, and IntoRawFd for `mqueue::MqdT`.  ([#2097](https://github.com/nix-rust/nix/pull/2097))- Add the ability to set `kevent_flags` on `SigEvent`.  ([#1731](https://github.com/nix-rust/nix/pull/1731))### Changed- All Cargo features have been removed from the default set. Users will need to  specify which features they depend on in their Cargo.toml.  ([#2091](https://github.com/nix-rust/nix/pull/2091))- Implemented I/O safety for many, but not all, of Nix's APIs.  Many public  functions argument and return types have changed:  | Original Type | New Type              |  | ------------- | --------------------- |  | AsRawFd       | AsFd                  |  | RawFd         | BorrowedFd or OwnedFd |  (#[1906](https://github.com/nix-rust/nix/pull/1906))- Use I/O safety with `copy_file_range`, and expose it on FreeBSD.  (#[1906](https://github.com/nix-rust/nix/pull/1906))- The MSRV is now 1.65  ([#1862](https://github.com/nix-rust/nix/pull/1862))  ([#2104](https://github.com/nix-rust/nix/pull/2104))- The epoll interface now uses a type.  ([#1882](https://github.com/nix-rust/nix/pull/1882))- With I/O-safe type applied in `pty::OpenptyResult` and `pty::ForkptyResult`,  users no longer need to manually close the file descriptors in these types.  ([#1921](https://github.com/nix-rust/nix/pull/1921))- Refactored `name` parameter of `mq_open` and `mq_unlink` to be generic over   `NixPath`.  ([#2102](https://github.com/nix-rust/nix/pull/2102)).- Made `clone` unsafe, like `fork`.  ([#1993](https://github.com/nix-rust/nix/pull/1993))### Removed- `sys::event::{kevent, kevent_ts}` are deprecated in favor of  `sys::kevent::Kqueue::kevent`, and `sys::event::kqueue` is deprecated in  favor of `sys::kevent::Kqueue::new`.  ([#1943](https://github.com/nix-rust/nix/pull/1943))- Removed deprecated IoVec API.  ([#1855](https://github.com/nix-rust/nix/pull/1855))- Removed deprecated net APIs.  ([#1861](https://github.com/nix-rust/nix/pull/1861))- `nix::sys::signalfd::signalfd` is deprecated.  Use  `nix::sys::signalfd::SignalFd` instead.  ([#1938](https://github.com/nix-rust/nix/pull/1938))- Removed `SigEvent` support on Fuchsia, where it was unsound.  ([#2079](https://github.com/nix-rust/nix/pull/2079))- Removed `flock` from `::nix::fcntl` on Solaris.  ([#2082](https://github.com/nix-rust/nix/pull/2082))## [0.26.3] - 2023-08-27### Fixed- Fix: send `ETH_P_ALL` in htons format  ([#1925](https://github.com/nix-rust/nix/pull/1925))- Fix: `recvmsg` now sets the length of the received `sockaddr_un` field  correctly on Linux platforms. ([#2041](https://github.com/nix-rust/nix/pull/2041))- Fix potentially invalid conversions in  `SockaddrIn::from<std::net::SocketAddrV4>`,  `SockaddrIn6::from<std::net::SockaddrV6>`, `IpMembershipRequest::new`, and  `Ipv6MembershipRequest::new` with future Rust versions.  ([#2061](https://github.com/nix-rust/nix/pull/2061))- Fixed an incorrect lifetime returned from `recvmsg`.  ([#2095](https://github.com/nix-rust/nix/pull/2095))## [0.26.2] - 2023-01-18### Fixed- Fix `SockaddrIn6` bug that was swapping `flowinfo` and `scope_id` byte  ordering.  ([#1964](https://github.com/nix-rust/nix/pull/1964))## [0.26.1] - 2022-11-29### Fixed- Fix UB with `sys::socket::sockopt::SockType` using `SOCK_PACKET`.  ([#1821](https://github.com/nix-rust/nix/pull/1821))## [0.26.0] - 2022-11-29### Added- Added `SockaddrStorage::{as_unix_addr, as_unix_addr_mut}`  ([#1871](https://github.com/nix-rust/nix/pull/1871))- Added `MntFlags` and `unmount` on all of the BSDs.- Added `any()` and `all()` to `poll::PollFd`.  ([#1877](https://github.com/nix-rust/nix/pull/1877))- Add `MntFlags` and `unmount` on all of the BSDs.  ([#1849](https://github.com/nix-rust/nix/pull/1849))- Added a `Statfs::flags` method.  ([#1849](https://github.com/nix-rust/nix/pull/1849))- Added `NSFS_MAGIC` FsType on Linux and Android.  ([#1829](https://github.com/nix-rust/nix/pull/1829))- Added `sched_getcpu` on platforms that support it.  ([#1825](https://github.com/nix-rust/nix/pull/1825))- Added `sched_getaffinity` and `sched_setaffinity` on FreeBSD.  ([#1804](https://github.com/nix-rust/nix/pull/1804))- Added `line_discipline` field to `Termios` on Linux, Android and Haiku  ([#1805](https://github.com/nix-rust/nix/pull/1805))- Expose the memfd module on FreeBSD (memfd was added in FreeBSD 13)  ([#1808](https://github.com/nix-rust/nix/pull/1808))- Added `domainname` field of `UtsName` on Android and Linux  ([#1817](https://github.com/nix-rust/nix/pull/1817))- Re-export `RLIM_INFINITY` from `libc`  ([#1831](https://github.com/nix-rust/nix/pull/1831))- Added `syncfs(2)` on Linux  ([#1833](https://github.com/nix-rust/nix/pull/1833))- Added `faccessat(2)` on illumos  ([#1841](https://github.com/nix-rust/nix/pull/1841))- Added `eaccess()` on FreeBSD, DragonFly and Linux (glibc and musl).  ([#1842](https://github.com/nix-rust/nix/pull/1842))- Added `IP_TOS` `SO_PRIORITY` and `IPV6_TCLASS` sockopts for Linux  ([#1853](https://github.com/nix-rust/nix/pull/1853))- Added `new_unnamed` and `is_unnamed` for `UnixAddr` on Linux and Android.  ([#1857](https://github.com/nix-rust/nix/pull/1857))- Added `SockProtocol::Raw` for raw sockets  ([#1848](https://github.com/nix-rust/nix/pull/1848))- added `IP_MTU` (`IpMtu`) `IPPROTO_IP` sockopt on Linux and Android.  ([#1865](https://github.com/nix-rust/nix/pull/1865))### Changed- The MSRV is now 1.56.1  ([#1792](https://github.com/nix-rust/nix/pull/1792))- The `addr` argument of `sys::mman::mmap` is now of type `Option<NonZeroUsize>`.  ([#1870](https://github.com/nix-rust/nix/pull/1870))- The `length` argument of `sys::mman::mmap` is now of type `NonZeroUsize`.  ([#1873](https://github.com/nix-rust/nix/pull/1873))### Fixed- Fixed using `SockaddrStorage` to store a Unix-domain socket address on Linux.  ([#1871](https://github.com/nix-rust/nix/pull/1871))- Fix microsecond calculation for `TimeSpec`.  ([#1801](https://github.com/nix-rust/nix/pull/1801))- Fix `User::from_name` and `Group::from_name` panicking  when given a name containing a nul.  ([#1815](https://github.com/nix-rust/nix/pull/1815))- Fix `User::from_uid` and `User::from_name` crash on Android platform.  ([#1824](https://github.com/nix-rust/nix/pull/1824))- Workaround XNU bug causing netmasks returned by `getifaddrs` to misbehave.  ([#1788](https://github.com/nix-rust/nix/pull/1788))### Removed- Removed deprecated error constants and conversions.  ([#1860](https://github.com/nix-rust/nix/pull/1860))## [0.25.0] - 2022-08-13### Added- Added `faccessat`  ([#1780](https://github.com/nix-rust/nix/pull/1780))- Added `memfd` on Android.  (#[1773](https://github.com/nix-rust/nix/pull/1773))- Added `ETH_P_ALL` to `SockProtocol` enum  (#[1768](https://github.com/nix-rust/nix/pull/1768))- Added four non-standard Linux `SysconfVar` variants  (#[1761](https://github.com/nix-rust/nix/pull/1761))- Added const constructors for `TimeSpec` and `TimeVal`  (#[1760](https://github.com/nix-rust/nix/pull/1760))- Added `chflags`.  (#[1758](https://github.com/nix-rust/nix/pull/1758))- Added `aio_writev` and `aio_readv`.  (#[1713](https://github.com/nix-rust/nix/pull/1713))- impl `From<uid_t>` for `Uid` and `From<gid_t>` for `Gid`  (#[1727](https://github.com/nix-rust/nix/pull/1727))- impl `From<SockaddrIn>` for `std::net::SocketAddrV4` and  impl `From<SockaddrIn6>` for `std::net::SocketAddrV6`.  (#[1711](https://github.com/nix-rust/nix/pull/1711))- Added support for the `x86_64-unknown-haiku` target.  (#[1703](https://github.com/nix-rust/nix/pull/1703))- Added `ptrace::read_user` and `ptrace::write_user` for Linux.  (#[1697](https://github.com/nix-rust/nix/pull/1697))- Added `getrusage` and helper types `UsageWho` and `Usage`  (#[1747](https://github.com/nix-rust/nix/pull/1747))- Added the `DontRoute` SockOpt  (#[1752](https://github.com/nix-rust/nix/pull/1752))- Added `signal::SigSet::from_sigset_t_unchecked()`.  (#[1741](https://github.com/nix-rust/nix/pull/1741))- Added the `Ipv4OrigDstAddr` sockopt and control message.  (#[1772](https://github.com/nix-rust/nix/pull/1772))- Added the `Ipv6OrigDstAddr` sockopt and control message.  (#[1772](https://github.com/nix-rust/nix/pull/1772))- Added the `Ipv4SendSrcAddr` control message.  (#[1776](https://github.com/nix-rust/nix/pull/1776))### Changed- Reimplemented sendmmsg/recvmmsg to avoid allocations and with better API  (#[1744](https://github.com/nix-rust/nix/pull/1744))- Rewrote the aio module.  The new module:  * Does more type checking at compile time rather than runtime.  * Gives the caller control over whether and when to `Box` an aio operation.  * Changes the type of the `priority` arguments to `i32`.  * Changes the return type of `aio_return` to `usize`.  (#[1713](https://github.com/nix-rust/nix/pull/1713))- `nix::poll::ppoll`: `sigmask` parameter is now optional.  (#[1739](https://github.com/nix-rust/nix/pull/1739))- Changed `gethostname` to return an owned `OsString`.  (#[1745](https://github.com/nix-rust/nix/pull/1745))- `signal:SigSet` is now marked as `repr(transparent)`.  (#[1741](https://github.com/nix-rust/nix/pull/1741))### Removed- Removed support for resubmitting partially complete `lio_listio` operations.  It was too complicated, and didn't fit Nix's theme of zero-cost abstractions.  Instead, it can be reimplemented downstream.  (#[1713](https://github.com/nix-rust/nix/pull/1713))## [0.24.2] - 2022-07-17### Fixed- Fixed buffer overflow in `nix::sys::socket::recvfrom`.  (#[1763](https://github.com/nix-rust/nix/pull/1763))- Enabled `SockaddrStorage::{as_link_addr, as_link_addr_mut}` for Linux-like  operating systems.  (#[1729](https://github.com/nix-rust/nix/pull/1729))- Fixed `SockaddrLike::from_raw` implementations for `VsockAddr` and  `SysControlAddr`.  (#[1736](https://github.com/nix-rust/nix/pull/1736))## [0.24.1] - 2022-04-22### Fixed- Fixed `UnixAddr::size` on Linux-based OSes.  (#[1702](https://github.com/nix-rust/nix/pull/1702))## [0.24.0] - 2022-04-21### Added- Added fine-grained features flags.  Most Nix functionality can now be  conditionally enabled.  By default, all features are enabled.  (#[1611](https://github.com/nix-rust/nix/pull/1611))- Added statfs FS type magic constants for `target_os = "android"`  and synced constants with libc v0.2.121.  (#[1690](https://github.com/nix-rust/nix/pull/1690))- Added `fexecve` on DragonFly.  (#[1577](https://github.com/nix-rust/nix/pull/1577))- `sys::uio::IoVec` is now `Send` and `Sync`  (#[1582](https://github.com/nix-rust/nix/pull/1582))- Added `EPOLLEXCLUSIVE` on Android.  (#[1567](https://github.com/nix-rust/nix/pull/1567))- Added `fdatasync` for FreeBSD, Fuchsia, NetBSD, and OpenBSD.  (#[1581](https://github.com/nix-rust/nix/pull/1581))- Added `sched_setaffinity` and `sched_getaffinity` on DragonFly.  (#[1537](https://github.com/nix-rust/nix/pull/1537))- Added `posix_fallocate` on DragonFly.  (#[1621](https://github.com/nix-rust/nix/pull/1621))- Added `SO_TIMESTAMPING` support  (#[1547](https://github.com/nix-rust/nix/pull/1547))- Added getter methods to `MqAttr` struct  (#[1619](https://github.com/nix-rust/nix/pull/1619))- Added the `TxTime` sockopt and control message.  (#[1564](https://github.com/nix-rust/nix/pull/1564))- Added POSIX per-process timer support  (#[1622](https://github.com/nix-rust/nix/pull/1622))- Added `sendfile` on DragonFly.  (#[1615](https://github.com/nix-rust/nix/pull/1615))- Added `UMOUNT_NOFOLLOW`, `FUSE_SUPER_MAGIC` on Linux.  (#[1634](https://github.com/nix-rust/nix/pull/1634))- Added `getresuid`, `setresuid`, `getresgid`, and `setresgid` on DragonFly, FreeBSD, and OpenBSD.  (#[1628](https://github.com/nix-rust/nix/pull/1628))- Added `MAP_FIXED_NOREPLACE` on Linux.  (#[1636](https://github.com/nix-rust/nix/pull/1636))- Added `fspacectl` on FreeBSD  (#[1640](https://github.com/nix-rust/nix/pull/1640))- Added `accept4` on DragonFly, Emscripten, Fuchsia, Illumos, and NetBSD.  (#[1654](https://github.com/nix-rust/nix/pull/1654))- Added `AsRawFd` implementation on `OwningIter`.  (#[1563](https://github.com/nix-rust/nix/pull/1563))- Added `process_vm_readv` and `process_vm_writev` on Android.  (#[1557](https://github.com/nix-rust/nix/pull/1557))- Added `nix::ucontext` module on s390x.  (#[1662](https://github.com/nix-rust/nix/pull/1662))- Implemented `Extend`, `FromIterator`, and `IntoIterator` for `SigSet` and  added `SigSet::iter` and `SigSetIter`.  (#[1553](https://github.com/nix-rust/nix/pull/1553))- Added `ENOTRECOVERABLE` and `EOWNERDEAD` error codes on DragonFly.  (#[1665](https://github.com/nix-rust/nix/pull/1665))- Implemented `Read` and `Write` for `&PtyMaster`  (#[1664](https://github.com/nix-rust/nix/pull/1664))- Added `MSG_NOSIGNAL` for Android, Dragonfly, FreeBSD, Fuchsia, Haiku, Illumos, Linux, NetBSD, OpenBSD and Solaris.  (#[1670](https://github.com/nix-rust/nix/pull/1670))- Added `waitid`.  (#[1584](https://github.com/nix-rust/nix/pull/1584))- Added `Ipv6DontFrag` for android, iOS, linux and macOS.- Added `IpDontFrag` for iOS, macOS.  (#[1692](https://github.com/nix-rust/nix/pull/1692))### Changed- `mqueue` functions now operate on a distinct type, `nix::mqueue::MqdT`.  Accessors take this type by reference, not by value.  (#[1639](https://github.com/nix-rust/nix/pull/1639))- Removed `SigSet::extend` in favor of `<SigSet as Extend<Signal>>::extend`.  Because of this change, you now need `use std::iter::Extend` to call `extend`  on a `SigSet`.  (#[1553](https://github.com/nix-rust/nix/pull/1553))- Removed the the `PATH_MAX` restriction from APIs accepting paths. Paths  will now be allocated on the heap if they are too long. In addition, large  instruction count improvements (~30x) were made to path handling.  (#[1656](https://github.com/nix-rust/nix/pull/1656))- Changed `getrlimit` and `setrlimit` to use `rlim_t` directly  instead of `Option<rlim_t>`.  (#[1668](https://github.com/nix-rust/nix/pull/1668))- Deprecated `InetAddr` and `SockAddr` in favor of `SockaddrIn`, `SockaddrIn6`,  and `SockaddrStorage`.  (#[1684](https://github.com/nix-rust/nix/pull/1684))- Deprecated `IpAddr`, `Ipv4Addr`, and `Ipv6Addr` in favor of their equivalents  from the standard library.  (#[1685](https://github.com/nix-rust/nix/pull/1685))- `uname` now returns a `Result<UtsName>` instead of just a `UtsName` and  ignoring failures from libc.  And getters on the `UtsName` struct now return  an `&OsStr` instead of `&str`.  (#[1672](https://github.com/nix-rust/nix/pull/1672))- Replaced `IoVec` with `IoSlice` and `IoSliceMut`, and replaced `IoVec::from_slice` with  `IoSlice::new`. (#[1643](https://github.com/nix-rust/nix/pull/1643))### Fixed- `InetAddr::from_std` now sets the `sin_len`/`sin6_len` fields on the BSDs.  (#[1642](https://github.com/nix-rust/nix/pull/1642))- Fixed a panic in `LinkAddr::addr`.  That function now returns an `Option`.  (#[1675](https://github.com/nix-rust/nix/pull/1675))  (#[1677](https://github.com/nix-rust/nix/pull/1677))### Removed- Removed public access to the inner fields of `NetlinkAddr`, `AlgAddr`,  `SysControlAddr`, `LinkAddr`, and `VsockAddr`.  (#[1614](https://github.com/nix-rust/nix/pull/1614))- Removed `EventFlag::EV_SYSFLAG`.  (#[1635](https://github.com/nix-rust/nix/pull/1635))## [0.23.1] - 2021-12-16### Changed- Relaxed the bitflags requirement from 1.3.1 to 1.1.  This partially reverts  #1492.  From now on, the MSRV is not guaranteed to work with all versions of  all dependencies, just with some version of all dependencies.  (#[1607](https://github.com/nix-rust/nix/pull/1607))### Fixed- Fixed soundness issues in `FdSet::insert`, `FdSet::remove`, and  `FdSet::contains` involving file descriptors outside of the range  `0..FD_SETSIZE`.  (#[1575](https://github.com/nix-rust/nix/pull/1575))## [0.23.0] - 2021-09-28### Added- Added the `LocalPeerCred` sockopt.  (#[1482](https://github.com/nix-rust/nix/pull/1482))- Added `TimeSpec::from_duration` and `TimeSpec::from_timespec`  (#[1465](https://github.com/nix-rust/nix/pull/1465))- Added `IPV6_V6ONLY` sockopt.  (#[1470](https://github.com/nix-rust/nix/pull/1470))- Added `impl From<User> for libc::passwd` trait implementation to convert a `User`  into a `libc::passwd`. Consumes the `User` struct to give ownership over  the member pointers.  (#[1471](https://github.com/nix-rust/nix/pull/1471))- Added `pthread_kill`.  (#[1472](https://github.com/nix-rust/nix/pull/1472))- Added `mknodat`.  (#[1473](https://github.com/nix-rust/nix/pull/1473))- Added `setrlimit` and `getrlimit`.  (#[1302](https://github.com/nix-rust/nix/pull/1302))- Added `ptrace::interrupt` method for platforms that support `PTRACE_INTERRUPT`  (#[1422](https://github.com/nix-rust/nix/pull/1422))- Added `IP6T_SO_ORIGINAL_DST` sockopt.  (#[1490](https://github.com/nix-rust/nix/pull/1490))- Added the `PTRACE_EVENT_STOP` variant to the `sys::ptrace::Event` enum  (#[1335](https://github.com/nix-rust/nix/pull/1335))- Exposed `SockAddr::from_raw_sockaddr`  (#[1447](https://github.com/nix-rust/nix/pull/1447))- Added `TcpRepair`  (#[1503](https://github.com/nix-rust/nix/pull/1503))- Enabled `pwritev` and `preadv` for more operating systems.  (#[1511](https://github.com/nix-rust/nix/pull/1511))- Added support for `TCP_MAXSEG` TCP Maximum Segment Size socket options  (#[1292](https://github.com/nix-rust/nix/pull/1292))- Added `Ipv4RecvErr` and `Ipv6RecvErr` sockopts and associated control messages.  (#[1514](https://github.com/nix-rust/nix/pull/1514))- Added `AsRawFd` implementation on `PollFd`.  (#[1516](https://github.com/nix-rust/nix/pull/1516))- Added `Ipv4Ttl` and `Ipv6Ttl` sockopts.  (#[1515](https://github.com/nix-rust/nix/pull/1515))- Added `MAP_EXCL`, `MAP_ALIGNED_SUPER`, and `MAP_CONCEAL` mmap flags, and  exposed `MAP_ANONYMOUS` for all operating systems.  (#[1522](https://github.com/nix-rust/nix/pull/1522))  (#[1525](https://github.com/nix-rust/nix/pull/1525))  (#[1531](https://github.com/nix-rust/nix/pull/1531))  (#[1534](https://github.com/nix-rust/nix/pull/1534))- Added read/write accessors for 'events' on `PollFd`.  (#[1517](https://github.com/nix-rust/nix/pull/1517))### Changed- `FdSet::{contains, highest, fds}` no longer require a mutable reference.  (#[1464](https://github.com/nix-rust/nix/pull/1464))- `User::gecos` and corresponding `libc::passwd::pw_gecos` are supported on  64-bit Android, change conditional compilation to include the field in  64-bit Android builds  (#[1471](https://github.com/nix-rust/nix/pull/1471))- `eventfd`s are supported on Android, change conditional compilation to  include `sys::eventfd::eventfd` and `sys::eventfd::EfdFlags`for Android  builds.  (#[1481](https://github.com/nix-rust/nix/pull/1481))- Most enums that come from C, for example `Errno`, are now marked as  `#[non_exhaustive]`.  (#[1474](https://github.com/nix-rust/nix/pull/1474))- Many more functions, mostly contructors, are now `const`.  (#[1476](https://github.com/nix-rust/nix/pull/1476))  (#[1492](https://github.com/nix-rust/nix/pull/1492))- `sys::event::KEvent::filter` now returns a `Result` instead of being  infalliable.  The only cases where it will now return an error are cases  where it previously would've had undefined behavior.  (#[1484](https://github.com/nix-rust/nix/pull/1484))- Minimum supported Rust version is now 1.46.0.  ([#1492](https://github.com/nix-rust/nix/pull/1492))- Rework `UnixAddr` to encapsulate internals better in order to fix soundness  issues. No longer allows creating a `UnixAddr` from a raw `sockaddr_un`.  ([#1496](https://github.com/nix-rust/nix/pull/1496))- Raised bitflags to 1.3.0 and the MSRV to 1.46.0.  ([#1492](https://github.com/nix-rust/nix/pull/1492))### Fixed- `posix_fadvise` now returns errors in the conventional way, rather than as a  non-zero value in `Ok()`.  (#[1538](https://github.com/nix-rust/nix/pull/1538))- Added more errno definitions for better backwards compatibility with  Nix 0.21.0.  (#[1467](https://github.com/nix-rust/nix/pull/1467))- Fixed potential undefined behavior in `Signal::try_from` on some platforms.  (#[1484](https://github.com/nix-rust/nix/pull/1484))- Fixed buffer overflow in `unistd::getgrouplist`.  (#[1545](https://github.com/nix-rust/nix/pull/1545))### Removed- Removed a couple of termios constants on redox that were never actually  supported.  (#[1483](https://github.com/nix-rust/nix/pull/1483))- Removed `nix::sys::signal::NSIG`.  It was of dubious utility, and not correct  for all platforms.  (#[1484](https://github.com/nix-rust/nix/pull/1484))- Removed support for 32-bit Apple targets, since they've been dropped by both  Rustc and Xcode.  (#[1492](https://github.com/nix-rust/nix/pull/1492))- Deprecated `SockAddr/InetAddr::to_str` in favor of `ToString::to_string`  (#[1495](https://github.com/nix-rust/nix/pull/1495))- Removed `SigevNotify` on OpenBSD and Redox.  (#[1511](https://github.com/nix-rust/nix/pull/1511))## [0.22.3] - 22 January 2022### Changed- Relaxed the bitflags requirement from 1.3.1 to 1.1.  This partially reverts  #1492.  From now on, the MSRV is not guaranteed to work with all versions of  all dependencies, just with some version of all dependencies.  (#[1607](https://github.com/nix-rust/nix/pull/1607))## [0.22.2] - 28 September 2021### Fixed- Fixed buffer overflow in `unistd::getgrouplist`.  (#[1545](https://github.com/nix-rust/nix/pull/1545))- Added more errno definitions for better backwards compatibility with  Nix 0.21.0.  (#[1467](https://github.com/nix-rust/nix/pull/1467))## [0.22.1] - 13 August 2021### Fixed- Locked bitflags to < 1.3.0 to fix the build with rust < 1.46.0.### Removed- Removed a couple of termios constants on redox that were never actually  supported.  (#[1483](https://github.com/nix-rust/nix/pull/1483))## [0.22.0] - 9 July 2021### Added- Added `if_nameindex` (#[1445](https://github.com/nix-rust/nix/pull/1445))- Added `nmount` for FreeBSD.  (#[1453](https://github.com/nix-rust/nix/pull/1453))- Added `IpFreebind` socket option (sockopt) on Linux, Fuchsia and Android.  (#[1456](https://github.com/nix-rust/nix/pull/1456))- Added `TcpUserTimeout` socket option (sockopt) on Linux and Fuchsia.  (#[1457](https://github.com/nix-rust/nix/pull/1457))- Added `renameat2` for Linux  (#[1458](https://github.com/nix-rust/nix/pull/1458))- Added `RxqOvfl` support on Linux, Fuchsia and Android.  (#[1455](https://github.com/nix-rust/nix/pull/1455))### Changed- `ptsname_r` now returns a lossily-converted string in the event of bad UTF,  just like `ptsname`.  ([#1446](https://github.com/nix-rust/nix/pull/1446))- Nix's error type is now a simple wrapper around the platform's Errno.  This  means it is now `Into<std::io::Error>`.  It's also `Clone`, `Copy`, `Eq`, and  has a small fixed size.  It also requires less typing.  For example, the old  enum variant `nix::Error::Sys(nix::errno::Errno::EINVAL)` is now simply  `nix::Error::EINVAL`.  ([#1446](https://github.com/nix-rust/nix/pull/1446))## [0.21.2] - 29 September 2021### Fixed- Fixed buffer overflow in `unistd::getgrouplist`.  (#[1545](https://github.com/nix-rust/nix/pull/1545))## [0.21.1] - 13 August 2021### Fixed- Locked bitflags to < 1.3.0 to fix the build with rust < 1.46.0.### Removed- Removed a couple of termios constants on redox that were never actually  supported.  (#[1483](https://github.com/nix-rust/nix/pull/1483))## [0.21.0] - 31 May 2021### Added- Added `getresuid` and `getresgid`  (#[1430](https://github.com/nix-rust/nix/pull/1430))- Added TIMESTAMPNS support for linux  (#[1402](https://github.com/nix-rust/nix/pull/1402))- Added `sendfile64` (#[1439](https://github.com/nix-rust/nix/pull/1439))- Added `MS_LAZYTIME` to `MsFlags`  (#[1437](https://github.com/nix-rust/nix/pull/1437))### Changed- Made `forkpty` unsafe, like `fork`  (#[1390](https://github.com/nix-rust/nix/pull/1390))- Made `Uid`, `Gid` and `Pid` methods `from_raw` and `as_raw` a `const fn`  (#[1429](https://github.com/nix-rust/nix/pull/1429))- Made `Uid::is_root` a `const fn`  (#[1429](https://github.com/nix-rust/nix/pull/1429))- `AioCb` is now always pinned.  Once a `libc::aiocb` gets sent to the kernel,  its address in memory must not change.  Nix now enforces that by using  `std::pin`.  Most users won't need to change anything, except when using  `aio_suspend`.  See that method's documentation for the new usage.  (#[1440](https://github.com/nix-rust/nix/pull/1440))- `LioCb` is now constructed using a distinct `LioCbBuilder` struct.  This  avoids a soundness issue with the old `LioCb`.  Usage is similar but  construction now uses the builder pattern.  See the documentation for  details.  (#[1440](https://github.com/nix-rust/nix/pull/1440))- Minimum supported Rust version is now 1.41.0.  ([#1440](https://github.com/nix-rust/nix/pull/1440))- Errno aliases are now associated consts on `Errno`, instead of consts in the  `errno` module.  (#[1452](https://github.com/nix-rust/nix/pull/1452))### Fixed- Allow `sockaddr_ll` size, as reported by the Linux kernel, to be smaller then it's definition  (#[1395](https://github.com/nix-rust/nix/pull/1395))- Fix spurious errors using `sendmmsg` with multiple cmsgs  (#[1414](https://github.com/nix-rust/nix/pull/1414))- Added `Errno::EOPNOTSUPP` to FreeBSD, where it was missing.  (#[1452](https://github.com/nix-rust/nix/pull/1452))### Removed- Removed `sys::socket::accept4` from Android arm because libc removed it in  version 0.2.87.  ([#1399](https://github.com/nix-rust/nix/pull/1399))- `AioCb::from_boxed_slice` and `AioCb::from_boxed_mut_slice` have been  removed.  They were useful with earlier versions of Rust, but should no  longer be needed now that async/await are available.  `AioCb`s now work  exclusively with borrowed buffers, not owned ones.  (#[1440](https://github.com/nix-rust/nix/pull/1440))- Removed some Errno values from platforms where they aren't actually defined.  (#[1452](https://github.com/nix-rust/nix/pull/1452))## [0.20.2] - 28 September 2021### Fixed- Fixed buffer overflow in `unistd::getgrouplist`.  (#[1545](https://github.com/nix-rust/nix/pull/1545))## [0.20.1] - 13 August 2021### Fixed- Locked bitflags to < 1.3.0 to fix the build with rust < 1.46.0.### Removed- Removed a couple of termios constants on redox that were never actually  supported.  (#[1483](https://github.com/nix-rust/nix/pull/1483))## [0.20.0] - 20 February 2021### Added- Added a `passwd` field to `Group` (#[1338](https://github.com/nix-rust/nix/pull/1338))- Added `mremap` (#[1306](https://github.com/nix-rust/nix/pull/1306))- Added `personality` (#[1331](https://github.com/nix-rust/nix/pull/1331))- Added limited Fuchsia support (#[1285](https://github.com/nix-rust/nix/pull/1285))- Added `getpeereid` (#[1342](https://github.com/nix-rust/nix/pull/1342))- Implemented `IntoIterator` for `Dir`  (#[1333](https://github.com/nix-rust/nix/pull/1333)).### Changed- Minimum supported Rust version is now 1.40.0.  ([#1356](https://github.com/nix-rust/nix/pull/1356))- i686-apple-darwin has been demoted to Tier 2 support, because it's deprecated  by Xcode.  (#[1350](https://github.com/nix-rust/nix/pull/1350))- Fixed calling `recvfrom` on an `AddrFamily::Packet` socket  (#[1344](https://github.com/nix-rust/nix/pull/1344))### Fixed- `TimerFd` now closes the underlying fd on drop.  ([#1381](https://github.com/nix-rust/nix/pull/1381))- Define `*_MAGIC` filesystem constants on Linux s390x  (#[1372](https://github.com/nix-rust/nix/pull/1372))- mqueue, sysinfo, timespec, statfs, test_ptrace_syscall() on x32  (#[1366](https://github.com/nix-rust/nix/pull/1366))### Removed- `Dir`, `SignalFd`, and `PtyMaster` are no longer `Clone`.  (#[1382](https://github.com/nix-rust/nix/pull/1382))- Removed `SockLevel`, which hasn't been used for a few years  (#[1362](https://github.com/nix-rust/nix/pull/1362))- Removed both `Copy` and `Clone` from `TimerFd`.  ([#1381](https://github.com/nix-rust/nix/pull/1381))## [0.19.1] - 28 November 2020### Fixed- Fixed bugs in `recvmmsg`.  (#[1341](https://github.com/nix-rust/nix/pull/1341))## [0.19.0] - 6 October 2020### Added- Added Netlink protocol families to the `SockProtocol` enum  (#[1289](https://github.com/nix-rust/nix/pull/1289))- Added `clock_gettime`, `clock_settime`, `clock_getres`,  `clock_getcpuclockid` functions and `ClockId` struct.  (#[1281](https://github.com/nix-rust/nix/pull/1281))- Added wrapper functions for `PTRACE_SYSEMU` and `PTRACE_SYSEMU_SINGLESTEP`.  (#[1300](https://github.com/nix-rust/nix/pull/1300))- Add support for Vsock on Android rather than just Linux.  (#[1301](https://github.com/nix-rust/nix/pull/1301))- Added `TCP_KEEPCNT` and `TCP_KEEPINTVL` TCP keepalive options.  (#[1283](https://github.com/nix-rust/nix/pull/1283))### Changed- Expose `SeekData` and `SeekHole` on all Linux targets  (#[1284](https://github.com/nix-rust/nix/pull/1284))- Changed unistd::{execv,execve,execvp,execvpe,fexecve,execveat} to take both `&[&CStr]` and `&[CString]` as its list argument(s).  (#[1278](https://github.com/nix-rust/nix/pull/1278))- Made `unistd::fork` an unsafe funtion, bringing it in line with [libstd's decision](https://github.com/rust-lang/rust/pull/58059).  (#[1293](https://github.com/nix-rust/nix/pull/1293))## [0.18.0] - 26 July 2020### Added- Added `fchown(2)` wrapper.  (#[1257](https://github.com/nix-rust/nix/pull/1257))- Added support on linux systems for `MAP_HUGE_`_`SIZE`_ family of flags.  (#[1211](https://github.com/nix-rust/nix/pull/1211))- Added support for `F_OFD_*` `fcntl` commands on Linux and Android.  (#[1195](https://github.com/nix-rust/nix/pull/1195))- Added `env::clearenv()`: calls `libc::clearenv` on platforms  where it's available, and clears the environment of all variables  via `std::env::vars` and `std::env::remove_var` on others.  (#[1185](https://github.com/nix-rust/nix/pull/1185))- `FsType` inner value made public.  (#[1187](https://github.com/nix-rust/nix/pull/1187))- Added `unistd::setfsuid` and `unistd::setfsgid` to set the user or group  identity for filesystem checks per-thread.  (#[1163](https://github.com/nix-rust/nix/pull/1163))- Derived `Ord`, `PartialOrd` for `unistd::Pid` (#[1189](https://github.com/nix-rust/nix/pull/1189))- Added `select::FdSet::fds` method to iterate over file descriptors in a set.  ([#1207](https://github.com/nix-rust/nix/pull/1207))- Added support for UDP generic segmentation offload (GSO) and generic  receive offload (GRO) ([#1209](https://github.com/nix-rust/nix/pull/1209))- Added support for `sendmmsg` and `recvmmsg` calls  (#[1208](https://github.com/nix-rust/nix/pull/1208))- Added support for `SCM_CREDS` messages (`UnixCredentials`) on FreeBSD/DragonFly  (#[1216](https://github.com/nix-rust/nix/pull/1216))- Added `BindToDevice` socket option (sockopt) on Linux  (#[1233](https://github.com/nix-rust/nix/pull/1233))- Added `EventFilter` bitflags for `EV_DISPATCH` and `EV_RECEIPT` on OpenBSD.  (#[1252](https://github.com/nix-rust/nix/pull/1252))- Added support for `Ipv4PacketInfo` and `Ipv6PacketInfo` to `ControlMessage`.  (#[1222](https://github.com/nix-rust/nix/pull/1222))- `CpuSet` and `UnixCredentials` now implement `Default`.  (#[1244](https://github.com/nix-rust/nix/pull/1244))- Added `unistd::ttyname`  (#[1259](https://github.com/nix-rust/nix/pull/1259))- Added support for `Ipv4PacketInfo` and `Ipv6PacketInfo` to `ControlMessage` for iOS and Android.  (#[1265](https://github.com/nix-rust/nix/pull/1265))- Added support for `TimerFd`.  (#[1261](https://github.com/nix-rust/nix/pull/1261))### Changed- Changed `fallocate` return type from `c_int` to `()` (#[1201](https://github.com/nix-rust/nix/pull/1201))- Enabled `sys::ptrace::setregs` and `sys::ptrace::getregs` on x86_64-unknown-linux-musl target  (#[1198](https://github.com/nix-rust/nix/pull/1198))- On Linux, `ptrace::write` is now an `unsafe` function. Caveat programmer.  (#[1245](https://github.com/nix-rust/nix/pull/1245))- `execv`, `execve`, `execvp` and `execveat` in `::nix::unistd` and `reboot` in  `::nix::sys::reboot` now return `Result<Infallible>` instead of `Result<Void>` (#[1239](https://github.com/nix-rust/nix/pull/1239))- `sys::socket::sockaddr_storage_to_addr` is no longer `unsafe`.  So is  `offset_of!`.- `sys::socket::sockaddr_storage_to_addr`, `offset_of!`, and `Errno::clear` are  no longer `unsafe`.- `SockAddr::as_ffi_pair`,`sys::socket::sockaddr_storage_to_addr`, `offset_of!`,  and `Errno::clear` are no longer `unsafe`.  (#[1244](https://github.com/nix-rust/nix/pull/1244))- Several `Inotify` methods now take `self` by value instead of by reference  (#[1244](https://github.com/nix-rust/nix/pull/1244))- `nix::poll::ppoll`: `timeout` parameter is now optional, None is equivalent for infinite timeout.### Fixed- Fixed `getsockopt`.  The old code produced UB which triggers a panic with  Rust 1.44.0.  (#[1214](https://github.com/nix-rust/nix/pull/1214))- Fixed a bug in nix::unistd that would result in an infinite loop  when a group or user lookup required a buffer larger than  16KB. (#[1198](https://github.com/nix-rust/nix/pull/1198))- Fixed unaligned casting of `cmsg_data` to `af_alg_iv` (#[1206](https://github.com/nix-rust/nix/pull/1206))- Fixed `readlink`/`readlinkat` when reading symlinks longer than `PATH_MAX` (#[1231](https://github.com/nix-rust/nix/pull/1231))- `PollFd`, `EpollEvent`, `IpMembershipRequest`, `Ipv6MembershipRequest`,  `TimeVal`, and `IoVec` are now `repr(transparent)`.  This is required for  correctness's sake across all architectures and compilers, though now bugs  have been reported so far.  (#[1243](https://github.com/nix-rust/nix/pull/1243))- Fixed unaligned pointer read in `Inotify::read_events`.  (#[1244](https://github.com/nix-rust/nix/pull/1244))### Removed- Removed `sys::socket::addr::from_libc_sockaddr` from the public API.  (#[1215](https://github.com/nix-rust/nix/pull/1215))- Removed `sys::termios::{get_libc_termios, get_libc_termios_mut, update_wrapper`  from the public API. These were previously hidden in the docs but still usable  by downstream.  (#[1235](https://github.com/nix-rust/nix/pull/1235))- Nix no longer implements `NixPath` for `Option<P> where P: NixPath`.  Most  Nix functions that accept `NixPath` arguments can't do anything useful with  `None`.  The exceptions (`mount` and `quotactl_sync`) already take explicitly  optional arguments.  (#[1242](https://github.com/nix-rust/nix/pull/1242))- Removed `unistd::daemon` and `unistd::pipe2` on OSX and ios  (#[1255](https://github.com/nix-rust/nix/pull/1255))- Removed `sys::event::FilterFlag::NOTE_EXIT_REPARENTED` and  `sys::event::FilterFlag::NOTE_REAP` on OSX and ios.  (#[1255](https://github.com/nix-rust/nix/pull/1255))- Removed `sys::ptrace::ptrace` on Android and Linux.  (#[1255](https://github.com/nix-rust/nix/pull/1255))- Dropped support for powerpc64-unknown-linux-gnu  (#[1266](https://github.com/nix-rust/nix/pull/1268))## [0.17.0] - 3 February 2020### Added- Add `CLK_TCK` to `SysconfVar`  (#[1177](https://github.com/nix-rust/nix/pull/1177))### Removed- Removed deprecated Error::description from error types  (#[1175](https://github.com/nix-rust/nix/pull/1175))## [0.16.1] - 23 December 2019### Fixed- Fixed the build for OpenBSD  (#[1168](https://github.com/nix-rust/nix/pull/1168))## [0.16.0] - 1 December 2019### Added- Added `ptrace::seize()`: similar to `attach()` on Linux  but with better-defined semantics.  (#[1154](https://github.com/nix-rust/nix/pull/1154))- Added `Signal::as_str()`: returns signal name as `&'static str`  (#[1138](https://github.com/nix-rust/nix/pull/1138))- Added `posix_fallocate`.  ([#1105](https://github.com/nix-rust/nix/pull/1105))- Implemented `Default` for `FdSet`  ([#1107](https://github.com/nix-rust/nix/pull/1107))- Added `NixPath::is_empty`.  ([#1107](https://github.com/nix-rust/nix/pull/1107))- Added `mkfifoat`  ([#1133](https://github.com/nix-rust/nix/pull/1133))- Added `User::from_uid`, `User::from_name`, `User::from_gid` and  `Group::from_name`,  ([#1139](https://github.com/nix-rust/nix/pull/1139))- Added `linkat`  ([#1101](https://github.com/nix-rust/nix/pull/1101))- Added `sched_getaffinity`.  ([#1148](https://github.com/nix-rust/nix/pull/1148))- Added optional `Signal` argument to `ptrace::{detach, syscall}` for signal  injection. ([#1083](https://github.com/nix-rust/nix/pull/1083))### Changed- `sys::termios::BaudRate` now implements `TryFrom<speed_t>` instead of  `From<speed_t>`.  The old `From` implementation would panic on failure.  ([#1159](https://github.com/nix-rust/nix/pull/1159))- `sys::socket::ControlMessage::ScmCredentials` and  `sys::socket::ControlMessageOwned::ScmCredentials` now wrap `UnixCredentials`  rather than `libc::ucred`.  ([#1160](https://github.com/nix-rust/nix/pull/1160))- `sys::socket::recvmsg` now takes a plain `Vec` instead of a `CmsgBuffer`  implementor.  If you were already using `cmsg_space!`, then you needn't worry.  ([#1156](https://github.com/nix-rust/nix/pull/1156))- `sys::socket::recvfrom` now returns  `Result<(usize, Option<SockAddr>)>` instead of `Result<(usize, SockAddr)>`.  ([#1145](https://github.com/nix-rust/nix/pull/1145))- `Signal::from_c_int` has been replaced by `Signal::try_from`  ([#1113](https://github.com/nix-rust/nix/pull/1113))- Changed `readlink` and `readlinkat` to return `OsString`  ([#1109](https://github.com/nix-rust/nix/pull/1109))  ```rust  # use nix::fcntl::{readlink, readlinkat};  // the buffer argument of `readlink` and `readlinkat` has been removed,  // and the return value is now an owned type (`OsString`).  // Existing code can be updated by removing the buffer argument  // and removing any clone or similar operation on the output  // old code `readlink(&path, &mut buf)` can be replaced with the following  let _: OsString = readlink(&path);  // old code `readlinkat(dirfd, &path, &mut buf)` can be replaced with the following  let _: OsString = readlinkat(dirfd, &path);  ```- Minimum supported Rust version is now 1.36.0.  ([#1108](https://github.com/nix-rust/nix/pull/1108))- `Ipv4Addr::octets`, `Ipv4Addr::to_std`, `Error::as_errno`,  `ForkResult::is_child`, `ForkResult::is_parent`, `Gid::as_raw`,  `Uid::is_root`, `Uid::as_raw`, `Pid::as_raw`, and `PollFd::revents` now take  `self` by value.  ([#1107](https://github.com/nix-rust/nix/pull/1107))- Type `&CString` for parameters of `exec(v|ve|vp|vpe|veat)` are changed to `&CStr`.  ([#1121](https://github.com/nix-rust/nix/pull/1121))### Fixed- Fix length of abstract socket addresses  ([#1120](https://github.com/nix-rust/nix/pull/1120))- Fix initialization of msghdr in recvmsg/sendmsg when built with musl  ([#1136](https://github.com/nix-rust/nix/pull/1136))### Removed- Remove the deprecated `CmsgSpace`.  ([#1156](https://github.com/nix-rust/nix/pull/1156))## [0.15.0] - 10 August 2019### Added- Added `MSG_WAITALL` to `MsgFlags` in `sys::socket`.  ([#1079](https://github.com/nix-rust/nix/pull/1079))- Implemented `Clone`, `Copy`, `Debug`, `Eq`, `Hash`, and `PartialEq` for most  types that support them. ([#1035](https://github.com/nix-rust/nix/pull/1035))- Added `copy_file_range` wrapper  ([#1069](https://github.com/nix-rust/nix/pull/1069))- Add `mkdirat`.  ([#1084](https://github.com/nix-rust/nix/pull/1084))- Add `posix_fadvise`.  ([#1089](https://github.com/nix-rust/nix/pull/1089))- Added `AF_VSOCK` to `AddressFamily`.  ([#1091](https://github.com/nix-rust/nix/pull/1091))- Add `unlinkat`  ([#1058](https://github.com/nix-rust/nix/pull/1058))- Add `renameat`.  ([#1097](https://github.com/nix-rust/nix/pull/1097))### Changed- Support for `ifaddrs` now present when building for Android.  ([#1077](https://github.com/nix-rust/nix/pull/1077))- Minimum supported Rust version is now 1.31.0  ([#1035](https://github.com/nix-rust/nix/pull/1035))  ([#1095](https://github.com/nix-rust/nix/pull/1095))- Now functions `statfs()` and `fstatfs()` return result with `Statfs` wrapper  ([#928](https://github.com/nix-rust/nix/pull/928))### Fixed- Enabled `sched_yield` for all nix hosts.  ([#1090](https://github.com/nix-rust/nix/pull/1090))## [0.14.1] - 2019-06-06### Added- Macros exported by `nix` may now be imported via `use` on the Rust 2018  edition without importing helper macros on Linux targets.  ([#1066](https://github.com/nix-rust/nix/pull/1066))  For example, in Rust 2018, the `ioctl_read_bad!` macro can now be imported  without importing the `convert_ioctl_res!` macro.  ```rust  use nix::ioctl_read_bad;  ioctl_read_bad!(tcgets, libc::TCGETS, libc::termios);  ```### Changed- Changed some public types from reexports of libc types like `uint32_t` to the  native equivalents like `u32.`  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))### Fixed- Fix the build on Android and Linux/mips with recent versions of libc.  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))## [0.14.0] - 2019-05-21### Added- Add IP_RECVIF & IP_RECVDSTADDR. Enable IP_PKTINFO and IP6_PKTINFO on netbsd/openbsd.  ([#1002](https://github.com/nix-rust/nix/pull/1002))- Added `inotify_init1`, `inotify_add_watch` and `inotify_rm_watch` wrappers for  Android and Linux. ([#1016](https://github.com/nix-rust/nix/pull/1016))- Add `ALG_SET_IV`, `ALG_SET_OP` and `ALG_SET_AEAD_ASSOCLEN` control messages and `AF_ALG`  socket types on Linux and Android ([#1031](https://github.com/nix-rust/nix/pull/1031))- Add killpg  ([#1034](https://github.com/nix-rust/nix/pull/1034))- Added ENOTSUP errno support for Linux and Android.  ([#969](https://github.com/nix-rust/nix/pull/969))- Add several errno constants from OpenBSD 6.2  ([#1036](https://github.com/nix-rust/nix/pull/1036))- Added `from_std` and `to_std` methods for `sys::socket::IpAddr`  ([#1043](https://github.com/nix-rust/nix/pull/1043))- Added `nix::unistd:seteuid` and `nix::unistd::setegid` for those platforms that do  not support `setresuid` nor `setresgid` respectively.  ([#1044](https://github.com/nix-rust/nix/pull/1044))- Added a `access` wrapper  ([#1045](https://github.com/nix-rust/nix/pull/1045))- Add `forkpty`  ([#1042](https://github.com/nix-rust/nix/pull/1042))- Add `sched_yield`  ([#1050](https://github.com/nix-rust/nix/pull/1050))### Changed- `PollFd` event flags renamed to `PollFlags` ([#1024](https://github.com/nix-rust/nix/pull/1024/))- `recvmsg` now returns an Iterator over `ControlMessageOwned` objects rather  than `ControlMessage` objects.  This is sadly not backwards-compatible.  Fix  code like this:  ```rust  if let ControlMessage::ScmRights(&fds) = cmsg {  ```  By replacing it with code like this:  ```rust  if let ControlMessageOwned::ScmRights(fds) = cmsg {  ```  ([#1020](https://github.com/nix-rust/nix/pull/1020))- Replaced `CmsgSpace` with the `cmsg_space` macro.  ([#1020](https://github.com/nix-rust/nix/pull/1020))### Fixed- Fixed multiple bugs when using `sendmsg` and `recvmsg` with ancillary control messages  ([#1020](https://github.com/nix-rust/nix/pull/1020))- Macros exported by `nix` may now be imported via `use` on the Rust 2018  edition without importing helper macros for BSD targets.  ([#1041](https://github.com/nix-rust/nix/pull/1041))  For example, in Rust 2018, the `ioctl_read_bad!` macro can now be imported  without importing the `convert_ioctl_res!` macro.  ```rust  use nix::ioctl_read_bad;  ioctl_read_bad!(tcgets, libc::TCGETS, libc::termios);  ```### Removed- `Daemon`, `NOTE_REAP`, and `NOTE_EXIT_REPARENTED` are now deprecated on OSX  and iOS.  ([#1033](https://github.com/nix-rust/nix/pull/1033))- `PTRACE_GETREGS`, `PTRACE_SETREGS`, `PTRACE_GETFPREGS`, and  `PTRACE_SETFPREGS` have been removed from some platforms where they never  should've been defined in the first place.  ([#1055](https://github.com/nix-rust/nix/pull/1055))## [0.13.1] - 2019-06-10### Changed- Changed some public types from reexports of libc types like `uint32_t` to the  native equivalents like `u32.`  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))### Fixed- Fix the build on Android and Linux/mips with recent versions of libc.  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))- Fixed build on Linux/arm and Linux/s390x with the latest Rust libc  ([52102cb](https://github.com/nix-rust/nix/commit/52102cb76398c4dfb9ea141b98c5b01a2e050973))### Removed- `Daemon`, `NOTE_REAP`, and `NOTE_EXIT_REPARENTED` are now deprecated on OSX  and iOS.  ([#1033](https://github.com/nix-rust/nix/pull/1033))## [0.13.0] - 2019-01-15### Added- Added PKTINFO(V4) & V6PKTINFO cmsg support - Android/FreeBSD/iOS/Linux/MacOS.  ([#990](https://github.com/nix-rust/nix/pull/990))- Added support of CString type in `setsockopt`.  ([#972](https://github.com/nix-rust/nix/pull/972))- Added option `TCP_CONGESTION` in `setsockopt`.  ([#972](https://github.com/nix-rust/nix/pull/972))- Added `symlinkat` wrapper.  ([#997](https://github.com/nix-rust/nix/pull/997))- Added `ptrace::{getregs, setregs}`.  ([#1010](https://github.com/nix-rust/nix/pull/1010))- Added `nix::sys::signal::signal`.  ([#817](https://github.com/nix-rust/nix/pull/817))- Added an `mprotect` wrapper.  ([#991](https://github.com/nix-rust/nix/pull/991))### Fixed- `lutimes` never worked on OpenBSD as it is not implemented on OpenBSD. It has  been removed. ([#1000](https://github.com/nix-rust/nix/pull/1000))- `fexecve` never worked on NetBSD or on OpenBSD as it is not implemented on  either OS. It has been removed. ([#1000](https://github.com/nix-rust/nix/pull/1000))## [0.12.1] 2019-06-08### Changed- Changed some public types from reexports of libc types like `uint32_t` to the  native equivalents like `u32.`  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))### Fixed- Fix the build on Android and Linux/mips with recent versions of libc.  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))- Fixed build on Linux/arm and Linux/s390x with the latest Rust libc  ([52102cb](https://github.com/nix-rust/nix/commit/52102cb76398c4dfb9ea141b98c5b01a2e050973))### Removed- `fexecve` never worked on NetBSD or on OpenBSD as it is not implemented on  either OS. It has been removed. ([#1000](https://github.com/nix-rust/nix/pull/1000))- `Daemon`, `NOTE_REAP`, and `NOTE_EXIT_REPARENTED` are now deprecated on OSX  and iOS.  ([#1033](https://github.com/nix-rust/nix/pull/1033))## [0.12.0] 2018-11-28### Added- Added `FromStr` and `Display` impls for `nix::sys::Signal`  ([#884](https://github.com/nix-rust/nix/pull/884))- Added a `sync` wrapper.  ([#961](https://github.com/nix-rust/nix/pull/961))- Added a `sysinfo` wrapper.  ([#922](https://github.com/nix-rust/nix/pull/922))- Support the `SO_PEERCRED` socket option and the `UnixCredentials` type on all Linux and Android targets.  ([#921](https://github.com/nix-rust/nix/pull/921))- Added support for `SCM_CREDENTIALS`, allowing to send process credentials over Unix sockets.  ([#923](https://github.com/nix-rust/nix/pull/923))- Added a `dir` module for reading directories (wraps `fdopendir`, `readdir`, and `rewinddir`).  ([#916](https://github.com/nix-rust/nix/pull/916))- Added `kmod` module that allows loading and unloading kernel modules on Linux.  ([#930](https://github.com/nix-rust/nix/pull/930))- Added `futimens` and `utimesat` wrappers ([#944](https://github.com/nix-rust/nix/pull/944)),  an `lutimes` wrapper ([#967](https://github.com/nix-rust/nix/pull/967)),  and a `utimes` wrapper ([#946](https://github.com/nix-rust/nix/pull/946)).- Added `AF_UNSPEC` wrapper to `AddressFamily` ([#948](https://github.com/nix-rust/nix/pull/948))- Added the `mode_t` public alias within `sys::stat`.  ([#954](https://github.com/nix-rust/nix/pull/954))- Added a `truncate` wrapper.  ([#956](https://github.com/nix-rust/nix/pull/956))- Added a `fchownat` wrapper.  ([#955](https://github.com/nix-rust/nix/pull/955))- Added support for `ptrace` on BSD operating systems ([#949](https://github.com/nix-rust/nix/pull/949))- Added `ptrace` functions for reads and writes to tracee memory and ptrace kill  ([#949](https://github.com/nix-rust/nix/pull/949)) ([#958](https://github.com/nix-rust/nix/pull/958))- Added a `acct` wrapper module for enabling and disabling process accounting  ([#952](https://github.com/nix-rust/nix/pull/952))- Added the `time_t` and `suseconds_t` public aliases within `sys::time`.  ([#968](https://github.com/nix-rust/nix/pull/968))- Added `unistd::execvpe` for Haiku, Linux and OpenBSD  ([#975](https://github.com/nix-rust/nix/pull/975))- Added `Error::as_errno`.  ([#977](https://github.com/nix-rust/nix/pull/977))### Changed- Increased required Rust version to 1.24.1  ([#900](https://github.com/nix-rust/nix/pull/900))  ([#966](https://github.com/nix-rust/nix/pull/966))### Fixed- Made `preadv` take immutable slice of IoVec.  ([#914](https://github.com/nix-rust/nix/pull/914))- Fixed passing multiple file descriptors over Unix Sockets.  ([#918](https://github.com/nix-rust/nix/pull/918))## [0.11.1] 2019-06-06### Changed- Changed some public types from reexports of libc types like `uint32_t` to the  native equivalents like `u32.`  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))### Fixed- Fix the build on Android and Linux/mips with recent versions of libc.  ([#1072](https://github.com/nix-rust/nix/pull/1072/commits))- Fixed build on Linux/arm and Linux/s390x with the latest Rust libc  ([52102cb](https://github.com/nix-rust/nix/commit/52102cb76398c4dfb9ea141b98c5b01a2e050973))### Removed- `fexecve` never worked on NetBSD or on OpenBSD as it is not implemented on  either OS. It has been removed. ([#1000](https://github.com/nix-rust/nix/pull/1000))- `Daemon`, `NOTE_REAP`, and `NOTE_EXIT_REPARENTED` are now deprecated on OSX  and iOS.  ([#1033](https://github.com/nix-rust/nix/pull/1033))## [0.11.0] 2018-06-01### Added- Added `sendfile` on FreeBSD and Darwin.  ([#901](https://github.com/nix-rust/nix/pull/901))- Added `pselect`  ([#894](https://github.com/nix-rust/nix/pull/894))- Exposed `preadv` and `pwritev` on the BSDs.  ([#883](https://github.com/nix-rust/nix/pull/883))- Added `mlockall` and `munlockall`  ([#876](https://github.com/nix-rust/nix/pull/876))- Added `SO_MARK` on Linux.  ([#873](https://github.com/nix-rust/nix/pull/873))- Added safe support for nearly any buffer type in the `sys::aio` module.  ([#872](https://github.com/nix-rust/nix/pull/872))- Added `sys::aio::LioCb` as a wrapper for `libc::lio_listio`.  ([#872](https://github.com/nix-rust/nix/pull/872))- Added `unistd::getsid`  ([#850](https://github.com/nix-rust/nix/pull/850))- Added `alarm`. ([#830](https://github.com/nix-rust/nix/pull/830))- Added interface flags `IFF_NO_PI, IFF_TUN, IFF_TAP` on linux-like systems.  ([#853](https://github.com/nix-rust/nix/pull/853))- Added `statvfs` module to all MacOS and Linux architectures.  ([#832](https://github.com/nix-rust/nix/pull/832))- Added `EVFILT_EMPTY`, `EVFILT_PROCDESC`, and `EVFILT_SENDFILE` on FreeBSD.  ([#825](https://github.com/nix-rust/nix/pull/825))- Exposed `termios::cfmakesane` on FreeBSD.  ([#825](https://github.com/nix-rust/nix/pull/825))- Exposed `MSG_CMSG_CLOEXEC` on *BSD.  ([#825](https://github.com/nix-rust/nix/pull/825))- Added `fchmod`, `fchmodat`.  ([#857](https://github.com/nix-rust/nix/pull/857))- Added `request_code_write_int!` on FreeBSD/DragonFlyBSD  ([#833](https://github.com/nix-rust/nix/pull/833))### Changed- `Display` and `Debug` for `SysControlAddr` now includes all fields.  ([#837](https://github.com/nix-rust/nix/pull/837))- `ioctl!` has been replaced with a family of `ioctl_*!` macros.  ([#833](https://github.com/nix-rust/nix/pull/833))- `io!`, `ior!`, `iow!`, and `iorw!` has been renamed to `request_code_none!`, `request_code_read!`,  `request_code_write!`, and `request_code_readwrite!` respectively. These have also now been exposed  in the documentation.  ([#833](https://github.com/nix-rust/nix/pull/833))- Enabled more `ptrace::Request` definitions for uncommon Linux platforms  ([#892](https://github.com/nix-rust/nix/pull/892))- Emulation of `FD_CLOEXEC` and `O_NONBLOCK` was removed from `socket()`, `accept4()`, and  `socketpair()`.  ([#907](https://github.com/nix-rust/nix/pull/907))### Fixed- Fixed possible panics when using `SigAction::flags` on Linux  ([#869](https://github.com/nix-rust/nix/pull/869))- Properly exposed 460800 and 921600 baud rates on NetBSD  ([#837](https://github.com/nix-rust/nix/pull/837))- Fixed `ioctl_write_int!` on FreeBSD/DragonFlyBSD  ([#833](https://github.com/nix-rust/nix/pull/833))- `ioctl_write_int!` now properly supports passing a `c_ulong` as the parameter on Linux non-musl targets  ([#833](https://github.com/nix-rust/nix/pull/833))### Removed- Removed explicit support for the `bytes` crate from the `sys::aio` module.  See `sys::aio::AioCb::from_boxed_slice` examples for alternatives.  ([#872](https://github.com/nix-rust/nix/pull/872))- Removed `sys::aio::lio_listio`.  Use `sys::aio::LioCb::listio` instead.  ([#872](https://github.com/nix-rust/nix/pull/872))- Removed emulated `accept4()` from macos, ios, and netbsd targets  ([#907](https://github.com/nix-rust/nix/pull/907))- Removed `IFF_NOTRAILERS` on OpenBSD, as it has been removed in OpenBSD 6.3  ([#893](https://github.com/nix-rust/nix/pull/893))## [0.10.0] 2018-01-26### Added- Added specialized wrapper: `sys::ptrace::step`  ([#852](https://github.com/nix-rust/nix/pull/852))- Added `AioCb::from_ptr` and `AioCb::from_mut_ptr`  ([#820](https://github.com/nix-rust/nix/pull/820))- Added specialized wrappers: `sys::ptrace::{traceme, syscall, cont, attach}`. Using the matching routines  with `sys::ptrace::ptrace` is now deprecated.- Added `nix::poll` module for all platforms  ([#672](https://github.com/nix-rust/nix/pull/672))- Added `nix::ppoll` function for FreeBSD and DragonFly  ([#672](https://github.com/nix-rust/nix/pull/672))- Added protocol families in `AddressFamily` enum.  ([#647](https://github.com/nix-rust/nix/pull/647))- Added the `pid()` method to `WaitStatus` for extracting the PID.  ([#722](https://github.com/nix-rust/nix/pull/722))- Added `nix::unistd:fexecve`.  ([#727](https://github.com/nix-rust/nix/pull/727))- Expose `uname()` on all platforms.  ([#739](https://github.com/nix-rust/nix/pull/739))- Expose `signalfd` module on Android as well.  ([#739](https://github.com/nix-rust/nix/pull/739))- Added `nix::sys::ptrace::detach`.  ([#749](https://github.com/nix-rust/nix/pull/749))- Added timestamp socket control message variant:  `nix::sys::socket::ControlMessage::ScmTimestamp`  ([#663](https://github.com/nix-rust/nix/pull/663))- Added socket option variant that enables the timestamp socket  control message: `nix::sys::socket::sockopt::ReceiveTimestamp`  ([#663](https://github.com/nix-rust/nix/pull/663))- Added more accessor methods for `AioCb`  ([#773](https://github.com/nix-rust/nix/pull/773))- Add `nix::sys::fallocate`  ([#768](https:://github.com/nix-rust/nix/pull/768))- Added `nix::unistd::mkfifo`.  ([#602](https://github.com/nix-rust/nix/pull/774))- Added `ptrace::Options::PTRACE_O_EXITKILL` on Linux and Android.  ([#771](https://github.com/nix-rust/nix/pull/771))- Added `nix::sys::uio::{process_vm_readv, process_vm_writev}` on Linux  ([#568](https://github.com/nix-rust/nix/pull/568))- Added `nix::unistd::{getgroups, setgroups, getgrouplist, initgroups}`. ([#733](https://github.com/nix-rust/nix/pull/733))- Added `nix::sys::socket::UnixAddr::as_abstract` on Linux and Android.  ([#785](https://github.com/nix-rust/nix/pull/785))- Added `nix::unistd::execveat` on Linux and Android.  ([#800](https://github.com/nix-rust/nix/pull/800))- Added the `from_raw()` method to `WaitStatus` for converting raw status values  to `WaitStatus` independent of syscalls.  ([#741](https://github.com/nix-rust/nix/pull/741))- Added more standard trait implementations for various types.  ([#814](https://github.com/nix-rust/nix/pull/814))- Added `sigprocmask` to the signal module.  ([#826](https://github.com/nix-rust/nix/pull/826))- Added `nix::sys::socket::LinkAddr` on Linux and all bsdlike system.  ([#813](https://github.com/nix-rust/nix/pull/813))- Add socket options for `IP_TRANSPARENT` / `BIND_ANY`.  ([#835](https://github.com/nix-rust/nix/pull/835))### Changed- Exposed the `mqueue` module for all supported operating systems.  ([#834](https://github.com/nix-rust/nix/pull/834))- Use native `pipe2` on all BSD targets.  Users should notice no difference.  ([#777](https://github.com/nix-rust/nix/pull/777))- Renamed existing `ptrace` wrappers to encourage namespacing ([#692](https://github.com/nix-rust/nix/pull/692))- Marked `sys::ptrace::ptrace` as `unsafe`.- Changed function signature of `socket()` and `socketpair()`. The `protocol` argument  has changed type from `c_int` to `SockProtocol`.  It accepts a `None` value for default protocol that was specified with zero using `c_int`.  ([#647](https://github.com/nix-rust/nix/pull/647))- Made `select` easier to use, adding the ability to automatically calculate the `nfds` parameter using the new  `FdSet::highest` ([#701](https://github.com/nix-rust/nix/pull/701))- Exposed `unistd::setresuid` and `unistd::setresgid` on FreeBSD and OpenBSD  ([#721](https://github.com/nix-rust/nix/pull/721))- Refactored the `statvfs` module removing extraneous API functions and the  `statvfs::vfs` module. Additionally  `(f)statvfs()` now return the struct  directly. And the returned `Statvfs` struct now exposes its data through  accessor methods. ([#729](https://github.com/nix-rust/nix/pull/729))- The `addr` argument to `madvise` and `msync` is now `*mut` to better match the  libc API. ([#731](https://github.com/nix-rust/nix/pull/731))- `shm_open` and `shm_unlink` are no longer exposed on Android targets, where  they are not officially supported. ([#731](https://github.com/nix-rust/nix/pull/731))- `MapFlags`, `MmapAdvise`, and `MsFlags` expose some more variants and only  officially-supported variants are provided for each target.  ([#731](https://github.com/nix-rust/nix/pull/731))- Marked `pty::ptsname` function as `unsafe`  ([#744](https://github.com/nix-rust/nix/pull/744))- Moved constants ptrace request, event and options to enums and updated ptrace functions and argument types accordingly.  ([#749](https://github.com/nix-rust/nix/pull/749))- `AioCb::Drop` will now panic if the `AioCb` is still in-progress ([#715](https://github.com/nix-rust/nix/pull/715))- Restricted `nix::sys::socket::UnixAddr::new_abstract` to Linux and Android only.  ([#785](https://github.com/nix-rust/nix/pull/785))- The `ucred` struct has been removed in favor of a `UserCredentials` struct that  contains only getters for its fields.  ([#814](https://github.com/nix-rust/nix/pull/814))- Both `ip_mreq` and `ipv6_mreq` have been replaced with `IpMembershipRequest` and  `Ipv6MembershipRequest`.  ([#814](https://github.com/nix-rust/nix/pull/814))- Removed return type from `pause`.  ([#829](https://github.com/nix-rust/nix/pull/829))- Changed the termios APIs to allow for using a `u32` instead of the `BaudRate`  enum on BSD platforms to support arbitrary baud rates. See the module docs for  `nix::sys::termios` for more details.  ([#843](https://github.com/nix-rust/nix/pull/843))### Fixed- Fix compilation and tests for OpenBSD targets  ([#688](https://github.com/nix-rust/nix/pull/688))- Fixed error handling in `AioCb::fsync`, `AioCb::read`, and `AioCb::write`.  It is no longer an error to drop an `AioCb` that failed to enqueue in the OS.  ([#715](https://github.com/nix-rust/nix/pull/715))- Fix potential memory corruption on non-Linux platforms when using  `sendmsg`/`recvmsg`, caused by mismatched `msghdr` definition.  ([#648](https://github.com/nix-rust/nix/pull/648))### Removed- `AioCb::from_boxed_slice` has been removed.  It was never actually safe.  Use  `from_bytes` or `from_bytes_mut` instead.  ([#820](https://github.com/nix-rust/nix/pull/820))- The syscall module has been removed. This only exposed enough functionality for  `memfd_create()` and `pivot_root()`, which are still exposed as separate functions.  ([#747](https://github.com/nix-rust/nix/pull/747))- The `Errno` variants are no longer reexported from the `errno` module. `Errno` itself is no longer reexported from the  crate root and instead must be accessed using the `errno` module. ([#696](https://github.com/nix-rust/nix/pull/696))- Removed `MS_VERBOSE`, `MS_NOSEC`, and `MS_BORN` from `MsFlags`. These  are internal kernel flags and should never have been exposed.  ([#814](https://github.com/nix-rust/nix/pull/814))## [0.9.0] 2017-07-23### Added- Added `sysconf`, `pathconf`, and `fpathconf`  ([#630](https://github.com/nix-rust/nix/pull/630)- Added `sys::signal::SigAction::{ flags, mask, handler}`  ([#611](https://github.com/nix-rust/nix/pull/609)- Added `nix::sys::pthread::pthread_self`  ([#591](https://github.com/nix-rust/nix/pull/591)- Added `AioCb::from_boxed_slice`  ([#582](https://github.com/nix-rust/nix/pull/582)- Added `nix::unistd::{openat, fstatat, readlink, readlinkat}`  ([#551](https://github.com/nix-rust/nix/pull/551))- Added `nix::pty::{grantpt, posix_openpt, ptsname/ptsname_r, unlockpt}`  ([#556](https://github.com/nix-rust/nix/pull/556)- Added `nix::ptr::openpty`  ([#456](https://github.com/nix-rust/nix/pull/456))- Added `nix::ptrace::{ptrace_get_data, ptrace_getsiginfo, ptrace_setsiginfo  and nix::Error::UnsupportedOperation}`  ([#614](https://github.com/nix-rust/nix/pull/614))- Added `cfmakeraw`, `cfsetspeed`, and `tcgetsid`. ([#527](https://github.com/nix-rust/nix/pull/527))- Added "bad none", "bad write_ptr", "bad write_int", and "bad readwrite" variants to the `ioctl!`  macro. ([#670](https://github.com/nix-rust/nix/pull/670))- On Linux and Android, added support for receiving `PTRACE_O_TRACESYSGOOD`  events from `wait` and `waitpid` using `WaitStatus::PtraceSyscall`  ([#566](https://github.com/nix-rust/nix/pull/566)).### Changed- The `ioctl!` macro and its variants now allow the generated functions to have  doccomments. ([#661](https://github.com/nix-rust/nix/pull/661))- Changed `ioctl!(write ...)` into `ioctl!(write_ptr ...)` and `ioctl!(write_int ..)` variants  to more clearly separate those use cases. ([#670](https://github.com/nix-rust/nix/pull/670))- Marked `sys::mman::{ mmap, munmap, madvise, munlock, msync }` as unsafe.  ([#559](https://github.com/nix-rust/nix/pull/559))- Minimum supported Rust version is now 1.13.- Removed `revents` argument from `PollFd::new()` as it's an output argument and  will be overwritten regardless of value.  ([#542](https://github.com/nix-rust/nix/pull/542))- Changed type signature of `sys::select::FdSet::contains` to make `self`  immutable ([#564](https://github.com/nix-rust/nix/pull/564))- Introduced wrapper types for `gid_t`, `pid_t`, and `uid_t` as `Gid`, `Pid`, and `Uid`  respectively. Various functions have been changed to use these new types as  arguments. ([#629](https://github.com/nix-rust/nix/pull/629))- Fixed compilation on all Android and iOS targets ([#527](https://github.com/nix-rust/nix/pull/527))  and promoted them to Tier 2 support.- `nix::sys::statfs::{statfs,fstatfs}` uses statfs definition from `libc::statfs` instead of own linux specific type `nix::sys::Statfs`.  Also file system type constants like `nix::sys::statfs::ADFS_SUPER_MAGIC` were removed in favor of the libc equivalent.  ([#561](https://github.com/nix-rust/nix/pull/561))- Revised the termios API including additional tests and documentation and exposed it on iOS. ([#527](https://github.com/nix-rust/nix/pull/527))- `eventfd`, `signalfd`, and `pwritev`/`preadv` functionality is now included by default for all  supported platforms. ([#681](https://github.com/nix-rust/nix/pull/561))- The `ioctl!` macro's plain variants has been replaced with "bad read" to be consistent with  other variants. The generated functions also have more strict types for their arguments. The  "*_buf" variants also now calculate total array size and take slice references for improved type  safety. The documentation has also been dramatically improved.  ([#670](https://github.com/nix-rust/nix/pull/670))### Removed- Removed `io::Error` from `nix::Error` and the conversion from `nix::Error` to `Errno`  ([#614](https://github.com/nix-rust/nix/pull/614))- All feature flags have been removed in favor of conditional compilation on supported platforms.  `execvpe` is no longer supported, but this was already broken and will be added back in the next  release. ([#681](https://github.com/nix-rust/nix/pull/561))- Removed `ioc_*` functions and many helper constants and macros within the `ioctl` module. These  should always have been private and only the `ioctl!` should be used in public code.  ([#670](https://github.com/nix-rust/nix/pull/670))### Fixed- Fixed multiple issues compiling under different archetectures and OSes.  Now compiles on Linux/MIPS ([#538](https://github.com/nix-rust/nix/pull/538)),  `Linux/PPC` ([#553](https://github.com/nix-rust/nix/pull/553)),  `MacOS/x86_64,i686` ([#553](https://github.com/nix-rust/nix/pull/553)),  `NetBSD/x64_64` ([#538](https://github.com/nix-rust/nix/pull/538)),  `FreeBSD/x86_64,i686` ([#536](https://github.com/nix-rust/nix/pull/536)), and  `Android` ([#631](https://github.com/nix-rust/nix/pull/631)).- `bind` and `errno_location` now work correctly on `Android`  ([#631](https://github.com/nix-rust/nix/pull/631))- Added `nix::ptrace` on all Linux-kernel-based platforms  [#624](https://github.com/nix-rust/nix/pull/624). Previously it was  only available on x86, x86-64, and ARM, and also not on Android.- Fixed `sys::socket::sendmsg` with zero entry `cmsgs` parameter.  ([#623](https://github.com/nix-rust/nix/pull/623))- Multiple constants related to the termios API have now been properly defined for  all supported platforms. ([#527](https://github.com/nix-rust/nix/pull/527))- `ioctl!` macro now supports working with non-int datatypes and properly supports all platforms.  ([#670](https://github.com/nix-rust/nix/pull/670))## [0.8.1] 2017-04-16### Fixed- Fixed build on FreeBSD. (Cherry-picked  [a859ee3c](https://github.com/nix-rust/nix/commit/a859ee3c9396dfdb118fcc2c8ecc697e2d303467))## [0.8.0] 2017-03-02### Added- Added `::nix::sys::termios::BaudRate` enum to provide portable baudrate  values. ([#518](https://github.com/nix-rust/nix/pull/518))- Added a new `WaitStatus::PtraceEvent` to support ptrace events on Linux  and Android ([#438](https://github.com/nix-rust/nix/pull/438))- Added support for POSIX AIO  ([#483](https://github.com/nix-rust/nix/pull/483))  ([#506](https://github.com/nix-rust/nix/pull/506))- Added support for XNU system control sockets  ([#478](https://github.com/nix-rust/nix/pull/478))- Added support for `ioctl` calls on BSD platforms  ([#478](https://github.com/nix-rust/nix/pull/478))- Added struct `TimeSpec`  ([#475](https://github.com/nix-rust/nix/pull/475))  ([#483](https://github.com/nix-rust/nix/pull/483))- Added complete definitions for all kqueue-related constants on all supported  OSes  ([#415](https://github.com/nix-rust/nix/pull/415))- Added function `epoll_create1` and bitflags `EpollCreateFlags` in  `::nix::sys::epoll` in order to support `::libc::epoll_create1`.  ([#410](https://github.com/nix-rust/nix/pull/410))- Added `setresuid` and `setresgid` for Linux in `::nix::unistd`  ([#448](https://github.com/nix-rust/nix/pull/448))- Added `getpgid` in `::nix::unistd`  ([#433](https://github.com/nix-rust/nix/pull/433))- Added `tcgetpgrp` and `tcsetpgrp` in `::nix::unistd`  ([#451](https://github.com/nix-rust/nix/pull/451))- Added `CLONE_NEWCGROUP` in `::nix::sched`  ([#457](https://github.com/nix-rust/nix/pull/457))- Added `getpgrp` in `::nix::unistd`  ([#491](https://github.com/nix-rust/nix/pull/491))- Added `fchdir` in `::nix::unistd`  ([#497](https://github.com/nix-rust/nix/pull/497))- Added `major` and `minor` in `::nix::sys::stat` for decomposing `dev_t`  ([#508](https://github.com/nix-rust/nix/pull/508))- Fixed the style of many bitflags and use `libc` in more places.  ([#503](https://github.com/nix-rust/nix/pull/503))- Added `ppoll` in `::nix::poll`  ([#520](https://github.com/nix-rust/nix/pull/520))- Added support for getting and setting pipe size with fcntl(2) on Linux  ([#540](https://github.com/nix-rust/nix/pull/540))### Changed- `::nix::sys::termios::{cfgetispeed, cfsetispeed, cfgetospeed, cfsetospeed}`  switched  to use `BaudRate` enum from `speed_t`.  ([#518](https://github.com/nix-rust/nix/pull/518))- `epoll_ctl` now could accept None as argument `event`  when op is `EpollOp::EpollCtlDel`.  ([#480](https://github.com/nix-rust/nix/pull/480))- Removed the `bad` keyword from the `ioctl!` macro  ([#478](https://github.com/nix-rust/nix/pull/478))- Changed `TimeVal` into an opaque Newtype  ([#475](https://github.com/nix-rust/nix/pull/475))- `kill`'s signature, defined in `::nix::sys::signal`, changed, so that the  signal parameter has type `T: Into<Option<Signal>>`. `None` as an argument  for that parameter will result in a 0 passed to libc's `kill`, while a  `Some`-argument will result in the previous behavior for the contained  `Signal`.  ([#445](https://github.com/nix-rust/nix/pull/445))- The minimum supported version of rustc is now 1.7.0.  ([#444](https://github.com/nix-rust/nix/pull/444))- Changed `KEvent` to an opaque structure that may only be modified by its  constructor and the `ev_set` method.  ([#415](https://github.com/nix-rust/nix/pull/415))  ([#442](https://github.com/nix-rust/nix/pull/442))  ([#463](https://github.com/nix-rust/nix/pull/463))- `pipe2` now calls `libc::pipe2` where available. Previously it was emulated  using `pipe`, which meant that setting `O_CLOEXEC` was not atomic.  ([#427](https://github.com/nix-rust/nix/pull/427))- Renamed `EpollEventKind` to `EpollFlags` in `::nix::sys::epoll` in order for  it to conform with our conventions.  ([#410](https://github.com/nix-rust/nix/pull/410))- `EpollEvent` in `::nix::sys::epoll` is now an opaque proxy for  `::libc::epoll_event`. The formerly public field `events` is now be read-only  accessible with the new method `events()` of `EpollEvent`. Instances of  `EpollEvent` can be constructed using the new method `new()` of EpollEvent.  ([#410](https://github.com/nix-rust/nix/pull/410))- `SigFlags` in `::nix::sys::signal` has be renamed to `SigmaskHow` and its type  has changed from `bitflags` to `enum` in order to conform to our conventions.  ([#460](https://github.com/nix-rust/nix/pull/460))- `sethostname` now takes a `&str` instead of a `&[u8]` as this provides an API  that makes more sense in normal, correct usage of the API.- `gethostname` previously did not expose the actual length of the hostname  written from the underlying system call at all.  This has been updated to  return a `&CStr` within the provided buffer that is always properly  NUL-terminated (this is not guaranteed by the call with all platforms/libc  implementations).- Exposed all fcntl(2) operations at the module level, so they can be  imported direclty instead of via `FcntlArg` enum.  ([#541](https://github.com/nix-rust/nix/pull/541))### Fixed- Fixed multiple issues with Unix domain sockets on non-Linux OSes  ([#474](https://github.com/nix-rust/nix/pull/415))- Fixed using kqueue with `EVFILT_USER` on FreeBSD  ([#415](https://github.com/nix-rust/nix/pull/415))- Fixed the build on FreeBSD, and fixed the getsockopt, sendmsg, and recvmsg  functions on that same OS.  ([#397](https://github.com/nix-rust/nix/pull/397))- Fixed an off-by-one bug in `UnixAddr::new_abstract` in `::nix::sys::socket`.  ([#429](https://github.com/nix-rust/nix/pull/429))- Fixed clone passing a potentially unaligned stack.  ([#490](https://github.com/nix-rust/nix/pull/490))- Fixed mkdev not creating a `dev_t` the same way as libc.  ([#508](https://github.com/nix-rust/nix/pull/508))## [0.7.0] 2016-09-09### Added- Added `lseek` and `lseek64` in `::nix::unistd`  ([#377](https://github.com/nix-rust/nix/pull/377))- Added `mkdir` and `getcwd` in `::nix::unistd`  ([#416](https://github.com/nix-rust/nix/pull/416))- Added accessors `sigmask_mut` and `sigmask` to `UContext` in  `::nix::ucontext`.  ([#370](https://github.com/nix-rust/nix/pull/370))- Added `WUNTRACED` to `WaitPidFlag` in `::nix::sys::wait` for non-_linux_  targets.  ([#379](https://github.com/nix-rust/nix/pull/379))- Added new module `::nix::sys::reboot` with enumeration `RebootMode` and  functions `reboot` and `set_cad_enabled`. Currently for _linux_ only.  ([#386](https://github.com/nix-rust/nix/pull/386))- `FdSet` in `::nix::sys::select` now also implements `Clone`.  ([#405](https://github.com/nix-rust/nix/pull/405))- Added `F_FULLFSYNC` to `FcntlArg` in `::nix::fcntl` for _apple_ targets.  ([#407](https://github.com/nix-rust/nix/pull/407))- Added `CpuSet::unset` in `::nix::sched`.  ([#402](https://github.com/nix-rust/nix/pull/402))- Added constructor method `new()` to `PollFd` in `::nix::poll`, in order to  allow creation of objects, after removing public access to members.  ([#399](https://github.com/nix-rust/nix/pull/399))- Added method `revents()` to `PollFd` in `::nix::poll`, in order to provide  read access to formerly public member `revents`.  ([#399](https://github.com/nix-rust/nix/pull/399))- Added `MSG_CMSG_CLOEXEC` to `MsgFlags` in `::nix::sys::socket` for _linux_ only.  ([#422](https://github.com/nix-rust/nix/pull/422))### Changed- Replaced the reexported integer constants for signals by the enumeration  `Signal` in `::nix::sys::signal`.  ([#362](https://github.com/nix-rust/nix/pull/362))- Renamed `EventFdFlag` to `EfdFlags` in `::nix::sys::eventfd`.  ([#383](https://github.com/nix-rust/nix/pull/383))- Changed the result types of `CpuSet::is_set` and `CpuSet::set` in  `::nix::sched` to `Result<bool>` and `Result<()>`, respectively. They now  return `EINVAL`, if an invalid argument for the `field` parameter is passed.  ([#402](https://github.com/nix-rust/nix/pull/402))- `MqAttr` in `::nix::mqueue` is now an opaque proxy for `::libc::mq_attr`,  which has the same structure as the old `MqAttr`. The field `mq_flags` of  `::libc::mq_attr` is readable using the new method `flags()` of `MqAttr`.  `MqAttr` also no longer implements `Debug`.  ([#392](https://github.com/nix-rust/nix/pull/392))- The parameter `msq_prio` of `mq_receive` with type `u32` in `::nix::mqueue`  was replaced by a parameter named `msg_prio` with type `&mut u32`, so that  the message priority can be obtained by the caller.  ([#392](https://github.com/nix-rust/nix/pull/392))- The type alias `MQd` in `::nix::queue` was replaced by the type alias  `libc::mqd_t`, both of which are aliases for the same type.  ([#392](https://github.com/nix-rust/nix/pull/392))### Removed- Type alias `SigNum` from `::nix::sys::signal`.  ([#362](https://github.com/nix-rust/nix/pull/362))- Type alias `CpuMask` from `::nix::shed`.  ([#402](https://github.com/nix-rust/nix/pull/402))- Removed public fields from `PollFd` in `::nix::poll`. (See also added method  `revents()`.  ([#399](https://github.com/nix-rust/nix/pull/399))### Fixed- Fixed the build problem for NetBSD (Note, that we currently do not support  it, so it might already be broken again).  ([#389](https://github.com/nix-rust/nix/pull/389))- Fixed the build on FreeBSD, and fixed the getsockopt, sendmsg, and recvmsg  functions on that same OS.  ([#397](https://github.com/nix-rust/nix/pull/397))## [0.6.0] 2016-06-10### Added- Added `gettid` in `::nix::unistd` for _linux_ and _android_.  ([#293](https://github.com/nix-rust/nix/pull/293))- Some _mips_ support in `::nix::sched` and `::nix::sys::syscall`.  ([#301](https://github.com/nix-rust/nix/pull/301))- Added `SIGNALFD_SIGINFO_SIZE` in `::nix::sys::signalfd`.  ([#309](https://github.com/nix-rust/nix/pull/309))- Added new module `::nix::ucontext` with struct `UContext`. Currently for  _linux_ only.  ([#311](https://github.com/nix-rust/nix/pull/311))- Added `EPOLLEXCLUSIVE` to `EpollEventKind` in `::nix::sys::epoll`.  ([#330](https://github.com/nix-rust/nix/pull/330))- Added `pause` to `::nix::unistd`.  ([#336](https://github.com/nix-rust/nix/pull/336))- Added `sleep` to `::nix::unistd`.  ([#351](https://github.com/nix-rust/nix/pull/351))- Added `S_IFDIR`, `S_IFLNK`, `S_IFMT` to `SFlag` in `::nix::sys::stat`.  ([#359](https://github.com/nix-rust/nix/pull/359))- Added `clear` and `extend` functions to `SigSet`'s implementation in  `::nix::sys::signal`.  ([#347](https://github.com/nix-rust/nix/pull/347))- `sockaddr_storage_to_addr` in `::nix::sys::socket` now supports `sockaddr_nl`  on _linux_ and _android_.  ([#366](https://github.com/nix-rust/nix/pull/366))- Added support for `SO_ORIGINAL_DST` in `::nix::sys::socket` on _linux_.  ([#367](https://github.com/nix-rust/nix/pull/367))- Added `SIGINFO` in `::nix::sys::signal` for the _macos_ target as well as  `SIGPWR` and `SIGSTKFLT` in `::nix::sys::signal` for non-_macos_ targets.  ([#361](https://github.com/nix-rust/nix/pull/361))### Changed- Changed the structure `IoVec` in `::nix::sys::uio`.  ([#304](https://github.com/nix-rust/nix/pull/304))- Replaced `CREATE_NEW_FD` by `SIGNALFD_NEW` in `::nix::sys::signalfd`.  ([#309](https://github.com/nix-rust/nix/pull/309))- Renamed `SaFlag` to `SaFlags` and `SigFlag` to `SigFlags` in  `::nix::sys::signal`.  ([#314](https://github.com/nix-rust/nix/pull/314))- Renamed `Fork` to `ForkResult` and changed its fields in `::nix::unistd`.  ([#332](https://github.com/nix-rust/nix/pull/332))- Added the `signal` parameter to `clone`'s signature in `::nix::sched`.  ([#344](https://github.com/nix-rust/nix/pull/344))- `execv`, `execve`, and `execvp` now return `Result<Void>` instead of  `Result<()>` in `::nix::unistd`.  ([#357](https://github.com/nix-rust/nix/pull/357))### Fixed- Improved the conversion from `std::net::SocketAddr` to `InetAddr` in  `::nix::sys::socket::addr`.  ([#335](https://github.com/nix-rust/nix/pull/335))## [0.5.0] 2016-03-01