nix

Added

• Add WatchDescriptor::as_raw, to get libc id of WatchDescriptor. (#2718)
• Added process::pthread_getthreadid_np() on FreeBSD. (#2725)
• Added timerfd support on FreeBSD (#2728)

Fixed

• The libc requirement is now 0.2.181, rather than pinned to 0.2.180. (#2744)

Added

• termios: Add definition for IUCLC to supported platforms (#2702)
• termios: Add definition for XCASE for supported platforms (#2703)

Added

• Added the UDP GSO/GRO socket options and CMsgs on Android. This includes the following types:

  • UdpGsoSegment
  • UdpGroSegment
  • ControlMessage::UdpGsoSegments
  • ControlMessageOwned::UdpGroSegments

  (#2666)

• Define errno EWOULDBLOCK as an alias of EAGAIN to match the AIX libc definition. (#2692)

• Enable module ifaddrs on GNU Hurd (#2697)

• Add termios OutputFlags::OFILL for Linux, Android, Aix, Cygwin, Fuchsia, Haiku, GNU/Hurd, Nto, Redox, Illumos, Solaris and Apple OSes. (#2701)

• add sync() for cygwin (#2708)

Changed

• changed EpollEvent methods to be const (#2656)
• Bumped libc to 0.2.180 (#2724)

Fixed

• Fixed nix::sys::ptrace::syscall_info, which was not setting the data argument properly, causing garbage values to be returned. (#2653)
• Cast the 'addr' argument of 'madvise()' to '*mut u8' on AIX to match the signature in the AIX libc. (#2655)
• Fixed the Dir module on NTO, Solaris, Hurd, and possibly other platforms. The d_name field was not copied correctly on those platforms. For some other platforms, it could be copied incorrectly for files with very long pathnames. (#2674)
• Fix the build on Illumos (#2694)

Removed

• Removed Eq and PartialEq implementations from SigHandler, because they never worked reliably. The suggested alternative is matches!. For example:

  let h: SigHandler = ...
  if matches!(h, SigHandler::SigIgn) {
      ...
  }
  ``` ([#2642](https://github.com/nix-rust/nix/pull/2642))
  

• Removed IFF_NOTRAILERS by NetBSD, as it has been removed upstream and from libc (#2724)

Fixed

• doc.rs build (#2634)

Added

• Add socket option IPV6_PKTINFO for BSDs/Linux/Android, also IPV6_RECVPKTINFO for DragonFlyBSD (#2113)
• Add fcntl's F_PREALLOCATE constant for Apple targets. (#2393)
• Improve support for extracting the TTL / Hop Limit from incoming packets and support for DSCP (ToS / Traffic Class). (#2425)
• Add socket option IP_TOS (nix::sys::socket::sockopt::IpTos) IPV6_TCLASS (nix::sys::socket::sockopt::Ipv6TClass) on Android/FreeBSD (#2464)
• Add SeekData and SeekHole to Whence for hurd and apple targets (#2473)
• Add From trait implementation between SocketAddr and Sockaddr, Sockaddr6 (#2474)
• Added wrappers for posix_spawn API (#2475)
• Add the support for Emscripten. (#2477)
• Add fcntl constant F_RDADVISE for Apple target (#2480)
• Add fcntl constant F_RDAHEAD for Apple target (#2482)
• Add F_LOG2PHYS and F_LOG2PHYS_EXT for Apple target (#2483)
• MAP_SHARED_VALIDATE was added for all linux targets. & MAP_SYNC was added for linux with the exclusion of mips architecures, and uclibc (#2499)
• Add getregs()/getregset()/setregset() for Linux/musl/aarch64 (#2502)
• Add FcntlArgs F_TRANSFEREXTENTS constant for Apple targets (#2504)
• Add MapFlags::MAP_STACK in sys::man for netbsd (#2526)
• Add support for libc::LOCAL_PEERTOKEN in getsockopt. (#2529)
• Add support for syslog, openlog, closelog on all unix. (#2537)
• Add the TCP_FUNCTION_BLK sockopt, on FreeBSD. (#2539)
• Implements Into<OwnedFd> for PtyMaster/Fanotify/Inotify/SignalFd/TimerFd (#2548)
• Add MremapFlags::MREMAP_DONTUNMAP to sys::mman::mremap for linux target. (#2555)
• Added sockopt_impl! to the public API. It's now possible for users to define their own sockopts without needing to make a PR to Nix. (#2556)
• Add the TCP_FUNCTION_ALIAS sockopt, on FreeBSD. (#2558)
• Add sys::mman::MmapAdvise MADV_PAGEOUT, MADV_COLD, MADV_WIPEONFORK, MADV_KEEPONFORK for Linux and Android targets (#2559)
• Add socket protocol Sctp, as well as MSG_NOTIFICATION for non-Android Linux targets. (#2562)
• Added from_owned_fd constructor to EventFd (#2563)
• Add sys::mman::MmapAdvise MADV_POPULATE_READ, MADV_POPULATE_WRITE for Linux and Android targets (#2565)
• Added from_owned_fd constructor to PtyMaster/Fanotify/Inotify/SignalFd/TimerFd (#2566)
• Added FcntlArg::F_READAHEAD for FreeBSD target (#2569)
• Added sockopt::LingerSec for Apple targets (#2572)
• Added sockopt::EsclBind for solarish targets (#2573)
• Exposed the std::os::fd::AsRawFd trait method for nix::sys::fanotify::Fanotify struct (#2575)
• Add support for syslog's setlogmask on all unix. (#2579)
• Added Fuchsia support for ioctl. (#2580)
• Add sys::socket::SockProtocol::EthIp, sys::socket::SockProtocol::EthIpv6, sys::socket::SockProtocol::EthLoop (#2581)
• Add OpenHarmony target into CI and Update documents. (#2599)
• Added the TcpMaxSeg setsockopt option for apple targets (#2603)
• Add FilAttach and FilDetach to socket::sockopt for Illumos (#2611)
• Add PeerPidfd (SO_PEERPIDFD) to socket::sockopt for Linux (#2620)
• Added socket::sockopt::AttachReusePortCbpf for Linux (#2621)
• Add ptrace::syscall_info for linux/glibc (#2627)

Changed

• Module sys/signal now adopts I/O safety (#1936)
• Change the type of the name argument of memfd_create() from &CStr to <P: NixPath>(name: &P) (#2431)
• Public interfaces in fcntl.rs and dir.rs now use I/O-safe types. (#2434)
• Module sys/stat now adopts I/O safety. (#2439)
• Module unistd now adopts I/O safety. (#2440)
• Module sys/fanotify now adopts I/O safety (#2443)
• Socket option IpTos has been renamed to Ipv4Tos, the old symbol is deprecated since 0.30.0 (#2465)
• Rename Flags EventFlag to EvFlags, and MemFdCreateFlag to MFdFlags (#2476)
• Made nix::sys::socket::UnknownCmsg public and more readable (#2520)
• recvmsg: take slice for cmsg_buffer instead of Vec (#2524)
• linkat: allow distinct types for path arguments (#2582)

Fixed

• Disable unsupported signals on sparc-linux (#2454)
• Fix cmsg_len() return type on OpenHarmony (#2456)
• The ns argument of sys::prctl::set_timerslack() should be of type c_ulong (#2505)
• Properly exclude NUL characters from OSStrings returned by getsockopt. (#2557)
• Fixes the build on OpenHarmony (#2587)

Removed

• Type SigevNotify is no longer PartialEq, Eq and Hash due to the use of BorrowedFd (#1936)
• EventFd::defuse() is removed because it does nothing, EventFd::arm() is also removed for symmetry reasons. (#2452)
• Removed the Copy trait from PollFd (#2631)

[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)
• Add socket option Ipv6Ttl for apple targets. (#2287)
• Add socket option UtunIfname. (#2325)
• make SigAction repr(transparent) & can be converted to the libc raw type (#2326)
• Add From trait implementation for conversions between sockaddr_in and SockaddrIn, sockaddr_in6 and SockaddrIn6 (#2328)
• Add socket option ReusePortLb for FreeBSD. (#2332)
• Added support for openat2 on linux. (#2339)
• Add if_indextoname function. (#2340)
• Add mount and unmount API for apple targets. (#2347)
• Added _PC_MIN_HOLE_SIZE for pathconf and fpathconf. (#2349)
• Added impl AsFd for pty::PtyMaster (#2355)
• Add open flag O_SEARCH to AIX, Empscripten, FreeBSD, Fuchsia, solarish, WASI (#2374)
• Add prctl function prctl_set_vma_anon_name for Linux/Android. (#2378)
• Add sync(2) for apple_targets/solarish/haiku/aix/hurd, syncfs(2) for hurd and fdatasync(2) for aix/hurd (#2379)
• Add fdatasync support for Apple targets. (#2380)
• Add fcntl::OFlag::O_PATH for FreeBSD and Fuchsia (#2382)
• Added PathconfVar::MIN_HOLE_SIZE for apple_targets. (#2388)
• Add open flag O_SEARCH to apple_targets (#2391)
• O_DSYNC may now be used with aio_fsync and fcntl on FreeBSD. (#2404)
• Added Flock::relock for upgrading and downgrading locks. (#2407)

Changed

• Change the ForkptyResult type to the following repr so that the uninitialized master field won't be accessed in the child process:

  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)

• Change the signature of ptrace::write and ptrace::write_user to make them safe (#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)

• Changed tee, splice and vmsplice RawFd arguments to AsFd. (#2387)

• Added I/O safety to the sys/aio module. Most functions that previously accepted a AsRawFd argument now accept an AsFd instead. (#2401)

• RecvMsg::cmsgs() now returns a Result, and checks that cmsgs were not truncated. (#2413)

Fixed

• No longer panics when the fanotify queue overflows. (#2399)
• Fixed ControlMessageOwned::UdpGroSegments wrapped type from u16 to i32 to reflect the used kernel's one. (#2406)

[0.28.0] - 2024-02-24

Added

• Added mkdtemp wrapper (#1297)

• Add associated constants UTIME_OMIT UTIME_NOW for TimeSpec (#1879)

• Added EventFd type. (#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)

• Added TlsGetRecordType control message type and corresponding enum for linux (#2065)

• Added Ipv6HopLimit to ::nix::sys::socket::ControlMessage for Linux, MacOS, FreeBSD, DragonflyBSD, Android, iOS and Haiku. (#2074)

• Added Icmp and IcmpV6 to SockProtocol (#2103)

• Added rfork support for FreeBSD in unistd (#2121)

• Added MapFlags::map_hugetlb_with_size_log2 method for Linux targets (#2125)

• Added mmap_anonymous function (#2127)

• Added mips32r6 and mips64r6 support for signal, ioctl and ptrace (#2138)

• Added F_GETPATH FcntlFlags entry on Apple/NetBSD/DragonflyBSD for ::nix::fcntl. (#2142)

• Added F_KINFO FcntlFlags entry on FreeBSD for ::nix::fcntl. (#2152)

• Added F_GETPATH_NOFIRMLINK and F_BARRIERFSYNC FcntlFlags entry on Apple for ::nix::fcntl. (#2155)

• Added newtype Flock to automatically unlock a held flock upon drop. Added Flockable trait to represent valid types for Flock. (#2170)

• Added SetSockOpt impls to enable Linux Kernel TLS on a TCP socket and to import TLS parameters. (#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)

• Added new fanotify API: wrappers for fanotify_init and fanotify_mark (#2194)

• Added SpecialCharacterindices support for haiku. (#2195)

• Added sys::sendfile support for solaris/illumos. (#2198)

• impl Display for InterfaceFlags (#2206)

• Added sendfilev in sys::sendfile for solarish (#2207)

• Added fctrl::SealFlag::F_SEAL_FUTURE_WRITE (#2213)

• Added Ipv6MulticastHops as socket option to set and read. (#2234)

• Enable ControlMessageOwned::Ipv4RecvIf and ControlMessageOwned::Ipv4RecvDstAddr for DragonFlyBSD (#2240)

• ClockId::set_time() and time::clock_settime() are now enabled on macOS (#2241)

• Added IpBindAddressNoPort sockopt to support IP_BIND_ADDRESS_NO_PORT available on linux. (#2244)

• Enable MapFlags::map_hugetlb_with_size_log2 method for Android/Fuchsia (#2245)

• Added TcpFastOpenConnect sockopt to support TCP_FASTOPEN_CONNECT available on linux. (#2247)

• Add reboot(2) for OpenBSD/NetBSD (#2251)

• Added new MemFdCreateFlag constants to sys::memfd on Linux and Android related to hugetlbfs support. (#2252)

• Expose the inner fd of Kqueue through:

  • impl AsFd for Kqueue
  • impl From<Kqueue> for OwnedFd

  (#2258)

• Added sys::eventfd support on FreeBSD (#2259)

• Added MmapFlags::MAP_FIXED constant in sys::mman for netbsd and openbsd (#2260)

• Added the SO_LISTENQLIMIT sockopt. (#2263)

• Enable the AT_EMPTY_PATH flag for the fchownat() function (#2267)

• Add AtFlags::AT_EMPTY_PATH for FreeBSD and Hurd (#2270)

• Enable `OFlag::O_DIRECTORY for Solarish (#2275)

• Added the Backlog wrapper type for the listen call. (#2276)

• Add clock_nanosleep() (#2277)

• Enabled O_DIRECT in fcntl::OFlags for solarish (#2278)

• Added a new API sigsuspend. (#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)

• Enable the AT_EMPTY_PATH flag for the linkat() function (#2284)

• Enable unistd::{sync, syncfs} for Android (#2296)

Changed

• poll now takes PollTimeout replacing libc::c_int. (#1876)

• Deprecated sys::eventfd::eventfd. (#1945)

• mmap, mmap_anonymous, munmap, mremap, madvise, msync, mprotect, munlock and mlock updated to use NonNull. (#2000)

• mmap function now accepts F instead of Option<F> (#2127)

• PollFd::new now takes a BorrowedFd argument, with relaxed lifetime requirements relative to the previous version. (#2134)

• FdSet::{insert, remove, contains} now take BorrowedFd arguments, and have relaxed lifetime requirements relative to 0.27.1. (#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)

• Changed openat() and Dir::openat(), now take optional dirfds (#2139)

• The MSRV is now 1.69 (#2144)

• Changed function SockaddrIn::ip() to return net::Ipv4Addr and refactored SocketAddrV6::ip() to be const (#2151)

• The following APIs now take optional dirfds:

  • readlinkat()
  • fstatat()
  • mknodat()
  • mkdirat()
  • execveat()

  (#2157)

• Epoll::wait now takes EpollTimeout replacing isize. (#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)

Fixed

• Fix SigSet incorrect implementation of Eq, PartialEq and Hash (#1946)
• Fixed ::sys::socket::sockopt::IpMulticastTtl by fixing the value of optlen passed to libc::setsockopt and added tests. (#2072)
• Fixed the function signature of recvmmsg, potentially causing UB (#2119)
• Fix SignalFd::set_mask. In 0.27.0 it would actually close the file descriptor. (#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)
• Fixed solaris build globally. (#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)
• Fixed ::unistd::Group::members using read_unaligned to avoid crash on misaligned pointers (#2311)

Removed

• The FchownatFlags type has been deprecated, please use AtFlags instead. (#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)
• The LinkatFlags type has been deprecated, please use AtFlags instead. (#2284)

[0.27.1] - 2023-08-28

Fixed

• Fixed generating the documentation on docs.rs. (#2111)

[0.27.0] - 2023-08-28

Added

• Added AT_EACCESS to AtFlags on all platforms but android (#1995)
• Add PF_ROUTE to SockType on macOS, iOS, all of the BSDs, Fuchsia, Haiku, Illumos. (#1867)
• Added nix::ucontext module on aarch64-unknown-linux-gnu. (#1662)
• Added CanRaw to SockProtocol and CanBcm as a separate SocProtocol constant. (#1912)
• Added Generic and NFLOG to SockProtocol. (#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)
• Added TFD_TIMER_CANCEL_ON_SET to ::nix::sys::time::TimerSetTimeFlags on Linux and Android. (#2040)
• Added SOF_TIMESTAMPING_OPT_ID and SOF_TIMESTAMPING_OPT_TSONLY to nix::sys::socket::TimestampingFlag. (#2048)
• Enabled socket timestamping options on Android. (#2077)
• Added vsock support for macOS (#2056)
• Added SO_SETFIB and SO_USER_COOKIE to nix::sys::socket::sockopt for FreeBSD. (#2085)
• Added SO_RTABLE for OpenBSD and SO_ACCEPTFILTER for FreeBSD/NetBSD to nix::sys::socket::sockopt. (#2085)
• Added MSG_WAITFORONE to MsgFlags on Android, Fuchsia, Linux, NetBSD, FreeBSD, OpenBSD, and Solaris. (#2014)
• Added SO_TS_CLOCK for FreeBSD to nix::sys::socket::sockopt. (#2093)
• Added support for prctl in Linux. (#1550)
• nix::socket and nix::select are now available on Redox. (#2012)
• Implemented AsFd, AsRawFd, FromRawFd, and IntoRawFd for mqueue::MqdT. (#2097)
• Add the ability to set kevent_flags on SigEvent. (#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)

• 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)

• Use I/O safety with copy_file_range, and expose it on FreeBSD. (#1906)

• The MSRV is now 1.65 (#1862) (#2104)

• The epoll interface now uses a type. (#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)

• Refactored name parameter of mq_open and mq_unlink to be generic over NixPath. (#2102).

• Made clone unsafe, like fork. (#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)
• Removed deprecated IoVec API. (#1855)
• Removed deprecated net APIs. (#1861)
• nix::sys::signalfd::signalfd is deprecated. Use nix::sys::signalfd::SignalFd instead. (#1938)
• Removed SigEvent support on Fuchsia, where it was unsound. (#2079)
• Removed flock from ::nix::fcntl on Solaris. (#2082)

[0.26.3] - 2023-08-27

Fixed

• Fix: send ETH_P_ALL in htons format (#1925)
• Fix: recvmsg now sets the length of the received sockaddr_un field correctly on Linux platforms. (#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)
• Fixed an incorrect lifetime returned from recvmsg. (#2095)

[0.26.2] - 2023-01-18

Fixed

• Fix SockaddrIn6 bug that was swapping flowinfo and scope_id byte ordering. (#1964)

[0.26.1] - 2022-11-29

Fixed

• Fix UB with sys::socket::sockopt::SockType using SOCK_PACKET. (#1821)

[0.26.0] - 2022-11-29

Added

• Added SockaddrStorage::{as_unix_addr, as_unix_addr_mut} (#1871)
• Added MntFlags and unmount on all of the BSDs.
• Added any() and all() to poll::PollFd. (#1877)
• Add MntFlags and unmount on all of the BSDs. (#1849)
• Added a Statfs::flags method. (#1849)
• Added NSFS_MAGIC FsType on Linux and Android. (#1829)
• Added sched_getcpu on platforms that support it. (#1825)
• Added sched_getaffinity and sched_setaffinity on FreeBSD. (#1804)
• Added line_discipline field to Termios on Linux, Android and Haiku (#1805)
• Expose the memfd module on FreeBSD (memfd was added in FreeBSD 13) (#1808)
• Added domainname field of UtsName on Android and Linux (#1817)
• Re-export RLIM_INFINITY from libc (#1831)
• Added syncfs(2) on Linux (#1833)
• Added faccessat(2) on illumos (#1841)
• Added eaccess() on FreeBSD, DragonFly and Linux (glibc and musl). (#1842)
• Added IP_TOS SO_PRIORITY and IPV6_TCLASS sockopts for Linux (#1853)
• Added new_unnamed and is_unnamed for UnixAddr on Linux and Android. (#1857)
• Added SockProtocol::Raw for raw sockets (#1848)
• added IP_MTU (IpMtu) IPPROTO_IP sockopt on Linux and Android. (#1865)

Changed

• The MSRV is now 1.56.1 (#1792)
• The addr argument of sys::mman::mmap is now of type Option<NonZeroUsize>. (#1870)
• The length argument of sys::mman::mmap is now of type NonZeroUsize. (#1873)

Fixed

• Fixed using SockaddrStorage to store a Unix-domain socket address on Linux. (#1871)
• Fix microsecond calculation for TimeSpec. (#1801)
• Fix User::from_name and Group::from_name panicking when given a name containing a nul. (#1815)
• Fix User::from_uid and User::from_name crash on Android platform. (#1824)
• Workaround XNU bug causing netmasks returned by getifaddrs to misbehave. (#1788)

Removed

• Removed deprecated error constants and conversions. (#1860)

[0.25.0] - 2022-08-13

Added

• Added faccessat (#1780)
• Added memfd on Android. (#1773)
• Added ETH_P_ALL to SockProtocol enum (#1768)
• Added four non-standard Linux SysconfVar variants (#1761)
• Added const constructors for TimeSpec and TimeVal (#1760)
• Added chflags. (#1758)
• Added aio_writev and aio_readv. (#1713)
• impl From<uid_t> for Uid and From<gid_t> for Gid (#1727)
• impl From<SockaddrIn> for std::net::SocketAddrV4 and impl From<SockaddrIn6> for std::net::SocketAddrV6. (#1711)
• Added support for the x86_64-unknown-haiku target. (#1703)
• Added ptrace::read_user and ptrace::write_user for Linux. (#1697)
• Added getrusage and helper types UsageWho and Usage (#1747)
• Added the DontRoute SockOpt (#1752)
• Added signal::SigSet::from_sigset_t_unchecked(). (#1741)
• Added the Ipv4OrigDstAddr sockopt and control message. (#1772)
• Added the Ipv6OrigDstAddr sockopt and control message. (#1772)
• Added the Ipv4SendSrcAddr control message. (#1776)

Changed

• Reimplemented sendmmsg/recvmmsg to avoid allocations and with better API (#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)

• nix::poll::ppoll: sigmask parameter is now optional. (#1739)

• Changed gethostname to return an owned OsString. (#1745)

• signal:SigSet is now marked as repr(transparent). (#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)

[0.24.2] - 2022-07-17

Fixed

• Fixed buffer overflow in nix::sys::socket::recvfrom. (#1763)
• Enabled SockaddrStorage::{as_link_addr, as_link_addr_mut} for Linux-like operating systems. (#1729)
• Fixed SockaddrLike::from_raw implementations for VsockAddr and SysControlAddr. (#1736)

[0.24.1] - 2022-04-22

Fixed

• Fixed UnixAddr::size on Linux-based OSes. (#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)
• Added statfs FS type magic constants for target_os = "android" and synced constants with libc v0.2.121. (#1690)
• Added fexecve on DragonFly. (#1577)
• sys::uio::IoVec is now Send and Sync (#1582)
• Added EPOLLEXCLUSIVE on Android. (#1567)
• Added fdatasync for FreeBSD, Fuchsia, NetBSD, and OpenBSD. (#1581)
• Added sched_setaffinity and sched_getaffinity on DragonFly. (#1537)
• Added posix_fallocate on DragonFly. (#1621)
• Added SO_TIMESTAMPING support (#1547)
• Added getter methods to MqAttr struct (#1619)
• Added the TxTime sockopt and control message. (#1564)
• Added POSIX per-process timer support (#1622)
• Added sendfile on DragonFly. (#1615)
• Added UMOUNT_NOFOLLOW, FUSE_SUPER_MAGIC on Linux. (#1634)
• Added getresuid, setresuid, getresgid, and setresgid on DragonFly, FreeBSD, and OpenBSD. (#1628)
• Added MAP_FIXED_NOREPLACE on Linux. (#1636)
• Added fspacectl on FreeBSD (#1640)
• Added accept4 on DragonFly, Emscripten, Fuchsia, Illumos, and NetBSD. (#1654)
• Added AsRawFd implementation on OwningIter. (#1563)
• Added process_vm_readv and process_vm_writev on Android. (#1557)
• Added nix::ucontext module on s390x. (#1662)
• Implemented Extend, FromIterator, and IntoIterator for SigSet and added SigSet::iter and SigSetIter. (#1553)
• Added ENOTRECOVERABLE and EOWNERDEAD error codes on DragonFly. (#1665)
• Implemented Read and Write for &PtyMaster (#1664)
• Added MSG_NOSIGNAL for Android, Dragonfly, FreeBSD, Fuchsia, Haiku, Illumos, Linux, NetBSD, OpenBSD and Solaris. (#1670)
• Added waitid. (#1584)
• Added Ipv6DontFrag for android, iOS, linux and macOS.
• Added IpDontFrag for iOS, macOS. (#1692)

Changed

• mqueue functions now operate on a distinct type, nix::mqueue::MqdT. Accessors take this type by reference, not by value. (#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)
• 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)
• Changed getrlimit and setrlimit to use rlim_t directly instead of Option<rlim_t>. (#1668)
• Deprecated InetAddr and SockAddr in favor of SockaddrIn, SockaddrIn6, and SockaddrStorage. (#1684)
• Deprecated IpAddr, Ipv4Addr, and Ipv6Addr in favor of their equivalents from the standard library. (#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)
• Replaced IoVec with IoSlice and IoSliceMut, and replaced IoVec::from_slice with IoSlice::new. (#1643)

Fixed

• InetAddr::from_std now sets the sin_len/sin6_len fields on the BSDs. (#1642)
• Fixed a panic in LinkAddr::addr. That function now returns an Option. (#1675) (#1677)

Removed

• Removed public access to the inner fields of NetlinkAddr, AlgAddr, SysControlAddr, LinkAddr, and VsockAddr. (#1614)
• Removed EventFlag::EV_SYSFLAG. (#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)

Fixed

• Fixed soundness issues in FdSet::insert, FdSet::remove, and FdSet::contains involving file descriptors outside of the range 0..FD_SETSIZE. (#1575)

[0.23.0] - 2021-09-28

Added

• Added the LocalPeerCred sockopt. (#1482)
• Added TimeSpec::from_duration and TimeSpec::from_timespec (#1465)
• Added IPV6_V6ONLY sockopt. (#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)
• Added pthread_kill. (#1472)
• Added mknodat. (#1473)
• Added setrlimit and getrlimit. (#1302)
• Added ptrace::interrupt method for platforms that support PTRACE_INTERRUPT (#1422)
• Added IP6T_SO_ORIGINAL_DST sockopt. (#1490)
• Added the PTRACE_EVENT_STOP variant to the sys::ptrace::Event enum (#1335)
• Exposed SockAddr::from_raw_sockaddr (#1447)
• Added TcpRepair (#1503)
• Enabled pwritev and preadv for more operating systems. (#1511)
• Added support for TCP_MAXSEG TCP Maximum Segment Size socket options (#1292)
• Added Ipv4RecvErr and Ipv6RecvErr sockopts and associated control messages. (#1514)
• Added AsRawFd implementation on PollFd. (#1516)
• Added Ipv4Ttl and Ipv6Ttl sockopts. (#1515)
• Added MAP_EXCL, MAP_ALIGNED_SUPER, and MAP_CONCEAL mmap flags, and exposed MAP_ANONYMOUS for all operating systems. (#1522) (#1525) (#1531) (#1534)
• Added read/write accessors for 'events' on PollFd. (#1517)

Changed

• FdSet::{contains, highest, fds} no longer require a mutable reference. (#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)
• eventfds are supported on Android, change conditional compilation to include sys::eventfd::eventfd and sys::eventfd::EfdFlagsfor Android builds. (#1481)
• Most enums that come from C, for example Errno, are now marked as #[non_exhaustive]. (#1474)
• Many more functions, mostly contructors, are now const. (#1476) (#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)
• Minimum supported Rust version is now 1.46.0. (#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)
• Raised bitflags to 1.3.0 and the MSRV to 1.46.0. (#1492)

Fixed

• posix_fadvise now returns errors in the conventional way, rather than as a non-zero value in Ok(). (#1538)
• Added more errno definitions for better backwards compatibility with Nix 0.21.0. (#1467)
• Fixed potential undefined behavior in Signal::try_from on some platforms. (#1484)
• Fixed buffer overflow in unistd::getgrouplist. (#1545)

Removed

• Removed a couple of termios constants on redox that were never actually supported. (#1483)
• Removed nix::sys::signal::NSIG. It was of dubious utility, and not correct for all platforms. (#1484)
• Removed support for 32-bit Apple targets, since they've been dropped by both Rustc and Xcode. (#1492)
• Deprecated SockAddr/InetAddr::to_str in favor of ToString::to_string (#1495)
• Removed SigevNotify on OpenBSD and Redox. (#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)

[0.22.2] - 28 September 2021

Fixed

• Fixed buffer overflow in unistd::getgrouplist. (#1545)
• Added more errno definitions for better backwards compatibility with Nix 0.21.0. (#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)

[0.22.0] - 9 July 2021

Added

• Added if_nameindex (#1445)
• Added nmount for FreeBSD. (#1453)
• Added IpFreebind socket option (sockopt) on Linux, Fuchsia and Android. (#1456)
• Added TcpUserTimeout socket option (sockopt) on Linux and Fuchsia. (#1457)
• Added renameat2 for Linux (#1458)
• Added RxqOvfl support on Linux, Fuchsia and Android. (#1455)

Changed

• ptsname_r now returns a lossily-converted string in the event of bad UTF, just like ptsname. (#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)

[0.21.2] - 29 September 2021

Fixed

• Fixed buffer overflow in unistd::getgrouplist. (#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)

[0.21.0] - 31 May 2021

Added

• Added getresuid and getresgid (#1430)
• Added TIMESTAMPNS support for linux (#1402)
• Added sendfile64 (#1439)
• Added MS_LAZYTIME to MsFlags (#1437)

Changed

• Made forkpty unsafe, like fork (#1390)
• Made Uid, Gid and Pid methods from_raw and as_raw a const fn (#1429)
• Made Uid::is_root a const fn (#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)
• 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)
• Minimum supported Rust version is now 1.41.0. (#1440)
• Errno aliases are now associated consts on Errno, instead of consts in the errno module. (#1452)

Fixed

• Allow sockaddr_ll size, as reported by the Linux kernel, to be smaller then it's definition (#1395)
• Fix spurious errors using sendmmsg with multiple cmsgs (#1414)
• Added Errno::EOPNOTSUPP to FreeBSD, where it was missing. (#1452)

Removed

• Removed sys::socket::accept4 from Android arm because libc removed it in version 0.2.87. (#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. AioCbs now work exclusively with borrowed buffers, not owned ones. (#1440)
• Removed some Errno values from platforms where they aren't actually defined. (#1452)

[0.20.2] - 28 September 2021

Fixed

• Fixed buffer overflow in unistd::getgrouplist. (#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)

[0.20.0] - 20 February 2021

Added

• Added a passwd field to Group (#1338)
• Added mremap (#1306)
• Added personality (#1331)
• Added limited Fuchsia support (#1285)
• Added getpeereid (#1342)
• Implemented IntoIterator for Dir (#1333).

Changed

• Minimum supported Rust version is now 1.40.0. (#1356)
• i686-apple-darwin has been demoted to Tier 2 support, because it's deprecated by Xcode. (#1350)
• Fixed calling recvfrom on an AddrFamily::Packet socket (#1344)

Fixed

• TimerFd now closes the underlying fd on drop. (#1381)
• Define *_MAGIC filesystem constants on Linux s390x (#1372)
• mqueue, sysinfo, timespec, statfs, test_ptrace_syscall() on x32 (#1366)

Removed

• Dir, SignalFd, and PtyMaster are no longer Clone. (#1382)
• Removed SockLevel, which hasn't been used for a few years (#1362)
• Removed both Copy and Clone from TimerFd. (#1381)

[0.19.1] - 28 November 2020

Fixed

• Fixed bugs in recvmmsg. (#1341)

[0.19.0] - 6 October 2020

Added

• Added Netlink protocol families to the SockProtocol enum (#1289)
• Added clock_gettime, clock_settime, clock_getres, clock_getcpuclockid functions and ClockId struct. (#1281)
• Added wrapper functions for PTRACE_SYSEMU and PTRACE_SYSEMU_SINGLESTEP. (#1300)
• Add support for Vsock on Android rather than just Linux. (#1301)
• Added TCP_KEEPCNT and TCP_KEEPINTVL TCP keepalive options. (#1283)

Changed

• Expose SeekData and SeekHole on all Linux targets (#1284)
• Changed unistd::{execv,execve,execvp,execvpe,fexecve,execveat} to take both &[&CStr] and &[CString] as its list argument(s). (#1278)
• Made unistd::fork an unsafe funtion, bringing it in line with libstd's decision. (#1293)

[0.18.0] - 26 July 2020

Added

• Added fchown(2) wrapper. (#1257)
• Added support on linux systems for MAP_HUGE_SIZE family of flags. (#1211)
• Added support for F_OFD_* fcntl commands on Linux and Android. (#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)
• FsType inner value made public. (#1187)
• Added unistd::setfsuid and unistd::setfsgid to set the user or group identity for filesystem checks per-thread. (#1163)
• Derived Ord, PartialOrd for unistd::Pid (#1189)
• Added select::FdSet::fds method to iterate over file descriptors in a set. (#1207)
• Added support for UDP generic segmentation offload (GSO) and generic receive offload (GRO) (#1209)
• Added support for sendmmsg and recvmmsg calls (#1208)
• Added support for SCM_CREDS messages (UnixCredentials) on FreeBSD/DragonFly (#1216)
• Added BindToDevice socket option (sockopt) on Linux (#1233)
• Added EventFilter bitflags for EV_DISPATCH and EV_RECEIPT on OpenBSD. (#1252)
• Added support for Ipv4PacketInfo and Ipv6PacketInfo to ControlMessage. (#1222)
• CpuSet and UnixCredentials now implement Default. (#1244)
• Added unistd::ttyname (#1259)
• Added support for Ipv4PacketInfo and Ipv6PacketInfo to ControlMessage for iOS and Android. (#1265)
• Added support for TimerFd. (#1261)

Changed

• Changed fallocate return type from c_int to () (#1201)
• Enabled sys::ptrace::setregs and sys::ptrace::getregs on x86_64-unknown-linux-musl target (#1198)
• On Linux, ptrace::write is now an unsafe function. Caveat programmer. (#1245)
• execv, execve, execvp and execveat in ::nix::unistd and reboot in ::nix::sys::reboot now return Result<Infallible> instead of Result<Void> (#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)
• Several Inotify methods now take self by value instead of by reference (#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)

• 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)

• Fixed unaligned casting of cmsg_data to af_alg_iv (#1206)

• Fixed readlink/readlinkat when reading symlinks longer than PATH_MAX (#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)

• Fixed unaligned pointer read in Inotify::read_events. (#1244)

Removed

• Removed sys::socket::addr::from_libc_sockaddr from the public API. (#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)

• 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)

• Removed unistd::daemon and unistd::pipe2 on OSX and ios (#1255)

• Removed sys::event::FilterFlag::NOTE_EXIT_REPARENTED and sys::event::FilterFlag::NOTE_REAP on OSX and ios. (#1255)

• Removed sys::ptrace::ptrace on Android and Linux. (#1255)

• Dropped support for powerpc64-unknown-linux-gnu (#1266)

[0.17.0] - 3 February 2020

Added

• Add CLK_TCK to SysconfVar (#1177)

Removed

• Removed deprecated Error::description from error types (#1175)

[0.16.1] - 23 December 2019

Fixed

• Fixed the build for OpenBSD (#1168)

[0.16.0] - 1 December 2019

Added

• Added ptrace::seize(): similar to attach() on Linux but with better-defined semantics. (#1154)

• Added Signal::as_str(): returns signal name as &'static str (#1138)

• Added posix_fallocate. (#1105)

• Implemented Default for FdSet (#1107)

• Added NixPath::is_empty. (#1107)

• Added mkfifoat ([#1133](https://github.com/nix