//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//

@exported import Darwin // Clang module


//===----------------------------------------------------------------------===//
// MacTypes.h
//===----------------------------------------------------------------------===//
public let noErr: OSStatus = 0

//===----------------------------------------------------------------------===//
// sys/errno.h
//===----------------------------------------------------------------------===//

public var errno : Int32 {
  get {
    return __error().memory
  }
  set {
    __error().memory = newValue
  }
}


//===----------------------------------------------------------------------===//
// stdio.h
//===----------------------------------------------------------------------===//

public var stdin : UnsafeMutablePointer<FILE> {
  get {
    return __stdinp
  }
  set {
    __stdinp = newValue
  }   
}

public var stdout : UnsafeMutablePointer<FILE> {
  get {
    return __stdoutp
  }
  set {
    __stdoutp = newValue
  }   
}

public var stderr : UnsafeMutablePointer<FILE> {
  get {
    return __stderrp
  }
  set {
    __stderrp = newValue
  }   
}


//===----------------------------------------------------------------------===//
// fcntl.h
//===----------------------------------------------------------------------===//

@asmname("_swift_Darwin_open") 
func _swift_Darwin_open(path: UnsafePointer<CChar>,
  _ oflag: CInt, _ mode: mode_t) -> CInt
@asmname("_swift_Darwin_openat")
func _swift_Darwin_openat(fd: CInt,
  _ path: UnsafePointer<CChar>,
  _ oflag: CInt, _ mode: mode_t) -> CInt

public func open(path: UnsafePointer<CChar>, _ oflag: CInt) -> CInt {
  return _swift_Darwin_open(path, oflag, 0)
}

public func open(path: UnsafePointer<CChar>, _ oflag: CInt,
  _ mode: mode_t) -> CInt {
  return _swift_Darwin_open(path, oflag, mode)
}

public func openat(fd: CInt, _ path: UnsafePointer<CChar>,
  _ oflag: CInt) -> CInt {
  return _swift_Darwin_openat(fd, path, oflag, 0)
}

public func openat(fd: CInt, _ path: UnsafePointer<CChar>,
  _ oflag: CInt, _ mode: mode_t) -> CInt {
  return _swift_Darwin_openat(fd, path, oflag, mode)
}


public let	S_IFMT   = mode_t(0o170000)
public let	S_IFIFO  = mode_t(0o010000)
public let	S_IFCHR  = mode_t(0o020000)
public let	S_IFDIR  = mode_t(0o040000)
public let	S_IFBLK  = mode_t(0o060000)
public let	S_IFREG  = mode_t(0o100000)
public let	S_IFLNK  = mode_t(0o120000)
public let	S_IFSOCK = mode_t(0o140000)
public let	S_IFWHT  = mode_t(0o160000)

public let	S_IRWXU  = mode_t(0o000700)
public let	S_IRUSR  = mode_t(0o000400)
public let	S_IWUSR  = mode_t(0o000200)
public let	S_IXUSR  = mode_t(0o000100)

public let	S_IRWXG  = mode_t(0o000070)
public let	S_IRGRP  = mode_t(0o000040)
public let	S_IWGRP  = mode_t(0o000020)
public let	S_IXGRP  = mode_t(0o000010)

public let	S_IRWXO  = mode_t(0o000007)
public let	S_IROTH  = mode_t(0o000004)
public let	S_IWOTH  = mode_t(0o000002)
public let	S_IXOTH  = mode_t(0o000001)

public let	S_ISUID  = mode_t(0o004000)
public let	S_ISGID  = mode_t(0o002000)
public let	S_ISVTX  = mode_t(0o001000)

public let	S_ISTXT  = S_ISVTX
public let	S_IREAD  = S_IRUSR
public let	S_IWRITE = S_IWUSR
public let	S_IEXEC  = S_IXUSR


//===----------------------------------------------------------------------===//
// unistd.h
//===----------------------------------------------------------------------===//

@available(*, unavailable, message="Please use threads or posix_spawn*()")
public func fork() -> Int32 {
  errno = ENOSYS
  return -1
}

@available(*, unavailable, message="Please use threads or posix_spawn*()")
public func vfork() -> Int32 {
  errno = ENOSYS
  return -1
}

//===----------------------------------------------------------------------===//
// signal.h
//===----------------------------------------------------------------------===//

public let SIG_DFL: sig_t? = nil
public let SIG_IGN = unsafeBitCast(1, sig_t.self)
public let SIG_HOLD = unsafeBitCast(5, sig_t.self)
public let SIG_ERR = unsafeBitCast(-1, sig_t.self)

// ${'Local Variables'}:
// eval: (read-only-mode 1)
// End: