unix

POSIX functionality

https://github.com/haskell/unix

Version on this page:2.7.1.0
LTS Haskell 23.19:2.8.6.0
Stackage Nightly 2025-04-24:2.8.5.1
Latest on Hackage:2.8.6.0@rev:1

See all snapshots unix appears in

BSD-3-Clause licensed
Maintained by [email protected]
This version can be pinned in stack with:unix-2.7.1.0@sha256:81a006a3a960de48111e8cd941bb90a0f19d3d39d3cce01a1c330bbed3fb039b,3225

Module documentation for 2.7.1.0

Depends on 3 packages(full list with versions):
base, bytestring, time

This package gives you access to the set of operating system services standardised by POSIX 1003.1b (or the IEEE Portable Operating System Interface for Computing Environments - IEEE Std. 1003.1).

The package is not supported under Windows (except under Cygwin).

Changes

Changelog for unix package

2.7.1.0 Dec 2014

  • Bundled with GHC 7.10.1

  • Add support for base-4.8.0.0

  • Tighten SafeHaskell bounds for GHC 7.10+

  • Add haddock comments on RTLD_NEXT and RTLD_DEFAULT

  • Deprecate function haveRtldLocal

  • Fix getGroupEntryForID/getGroupEntryForName on Solaris. Solaris uses CPP macros for required getgrgid_r and getgrnam_r functions definition so the fix is to change from C ABI calling convention to C API calling convention

  • Fix potential type-mismatch in telldir/seekdir FFI imports

  • Use CAPI FFI import for truncate to make sure the LFS-version is used.

  • executeFile: Fix ENOTDIR error for entries with non-directory components in PATH (and instead skip over non-directory PATH-elements)

  • New functions in System.Posix.Unistd:

    • fileSynchronise (aka fsync(2)), and
    • fileSynchroniseDataOnly (aka fdatasync(2))

  • New module System.Posix.Fcntl providing

    • fileAdvise (aka posix_fadvise(2)), and
    • fileAllocate (aka posix_fallocate(2))

  • Fix SIGINFO and SIGWINCH definitions

2.7.0.1 Mar 2014

  • Bundled with GHC 7.8.1

  • Handle EROFS and ETXTBSY as (non-exceptional) permission denied in fileAccess

  • Fix getFileStatus to retry stat(2) when it returns EAGAIN (this can happen on Solaris)

2.7.0.0 Nov 2013

  • New forkProcessWithUnmask function in the style of forkIOWithUnmask

  • Change forkProcess to inherit the exception masking state of its caller

  • Add new Bool flag to ProcessStatus(Terminated) constructor indicating whether a core dump occured

  • New functions in System.Posix.Files{,.ByteString} for operating on high resolution file timestamps:

    setFdTimesHiRes :: Fd -> POSIXTime -> POSIXTime -> IO ()
setFileTimesHiRes :: FilePath -> POSIXTime -> POSIXTime -> IO ()
setSymbolicLinkTimesHiRes :: FilePath -> POSIXTime -> POSIXTime -> IO ()
touchFd :: Fd -> IO ()
touchSymbolicLink :: FilePath -> IO ()

  • Export SignalInfo(..) and SignalSpecificInfo(..) as well as the two Handler constructors CatchInfo and CatchInfoOnce from System.Posix.Signals

  • Don’t export seekDirStream and tellDirStream if the underlying seekdir(3)/telldir(3) system calls are not available (as on Android)

  • Fix library detection of shm* on openSUSE (#8350)

  • Minor documentation fixes/updates

  • Update package to cabal-version >= 1.10 format

2.6.0.1 Jan 2013

  • Bundled with GHC 7.6.2
  • Fix memory corruption issue in putEnv
  • Use pthread_kill(3) instead of raise(2) on OS X too

2.6.0.0 Sep 2012

  • Bundled with GHC 7.6.1
  • New functions mkdtemp and mkstemps in System.Posix.Temp
  • New functions setEnvironment and cleanEnv
  • New functions accessTimeHiRes, modificationTimeHiRes, and statusChangeTimeHiRes for accessing high resolution timestamps