process 1.6.13.1 → 1.6.30.0
raw patch · 25 files changed
Files
- Setup.hs +6/−0
- System/Process.hs +189/−74
- System/Process/Common.hs +59/−23
- System/Process/CommunicationHandle.hs +155/−0
- System/Process/CommunicationHandle/Internal.hsc +311/−0
- System/Process/Environment/OsString.hs +41/−0
- System/Process/Internals.hs +73/−6
- System/Process/JavaScript.hs +308/−0
- System/Process/Posix.hs +33/−1
- System/Process/Windows.hsc +140/−26
- aclocal.m4 +2/−3
- cbits/posix/common.h +4/−2
- cbits/posix/find_executable.c +75/−14
- cbits/posix/fork_exec.c +83/−43
- cbits/posix/posix_spawn.c +52/−11
- cbits/posix/runProcess.c +13/−0
- cbits/win32/runProcess.c +69/−15
- changelog.md +120/−0
- configure +5210/−4950
- configure.ac +43/−3
- include/HsProcessConfig.h.in +16/−4
- include/runProcess.h +5/−1
- jsbits/process.js +581/−0
- process.cabal +47/−32
- test/main.hs +0/−147
Setup.hs view
@@ -1,6 +1,12 @@ module Main (main) where +-- Cabal import Distribution.Simple+ ( defaultMainWithHooks+ , autoconfUserHooks+ )++-------------------------------------------------------------------------------- main :: IO () main = defaultMainWithHooks autoconfUserHooks
System/Process.hs view
@@ -1,4 +1,5 @@ {-# LANGUAGE CPP, ForeignFunctionInterface #-}+{-# LANGUAGE LambdaCase #-} #if __GLASGOW_HASKELL__ >= 709 {-# LANGUAGE Safe #-} #else@@ -6,6 +7,12 @@ #endif {-# LANGUAGE InterruptibleFFI #-} +#include <ghcplatform.h>++#if defined(javascript_HOST_ARCH)+{-# LANGUAGE JavaScriptFFI #-}+#endif+ ----------------------------------------------------------------------------- -- | -- Module : System.Process@@ -20,28 +27,62 @@ -- ----------------------------------------------------------------------------- --- ToDo:+-- TODO: -- * Flag to control whether exiting the parent also kills the child. module System.Process ( -- * Running sub-processes++ -- ** General interface to process creation++ -- | @createProcess@ and @createProcess_@ are general interfaces+ -- to process creation. To start with you might instead want to use+ -- one of the [simpler process creation functions](#g:simpler)+ -- below.+ createProcess, createProcess_,++ -- ** Creating a @CreateProcess@++ -- | Once you have a @CreateProcess@ you can launch it with+ -- 'createProcess' or one of the [simpler process creation+ -- functions](#g:simpler).+ shell, proc,++ -- ** @CreateProcess@ and associated types+ CreateProcess(..), CmdSpec(..), StdStream(..), ProcessHandle, - -- ** Simpler functions for common tasks+ -- * Simpler functions for common tasks #simpler#++ -- ** Call, the simplest way of launching a process++ callCreateProcess, callProcess, callCommand,++ -- ** Spawn, obtaining a @ProcessHandle@+ spawnProcess, spawnCommand,++ -- ** Read, passing @stdin@ and obtaining @stdout@+ readCreateProcess, readProcess,++ -- ** Read with exit code, passing @stdin@, obtaining exit code, @stdout@ and @stderr@+ readCreateProcessWithExitCode, readProcessWithExitCode,++ -- ** Other+ withCreateProcess, cleanupProcess, @@ -51,6 +92,9 @@ getPid, getCurrentPid, + -- ** Secure process creation on Windows+ -- $windows-mitigations+ -- ** Control-C handling on Unix -- $ctlc-handling @@ -83,7 +127,11 @@ import Control.Concurrent import Control.DeepSeq (rnf)-import Control.Exception (SomeException, mask, allowInterrupt, bracket, try, throwIO)+import Control.Exception (+#if !defined(javascript_HOST_ARCH)+ allowInterrupt,+#endif+ bracket) import qualified Control.Exception as C import Control.Monad import Data.Maybe@@ -93,21 +141,30 @@ import System.IO import System.IO.Error (mkIOError, ioeSetErrorString) -#if defined(WINDOWS)+#if defined(javascript_HOST_ARCH)+import System.Process.JavaScript(getProcessId, getCurrentProcessId)+#elif defined(mingw32_HOST_OS) import System.Win32.Process (getProcessId, getCurrentProcessId, ProcessId) #else import System.Posix.Process (getProcessID) import System.Posix.Types (CPid (..)) #endif -import GHC.IO.Exception ( ioException, IOErrorType(..), IOException(..) )+import GHC.IO.Exception ( ioException, IOErrorType(..) ) +#if defined(wasm32_HOST_ARCH)+import GHC.IO.Exception ( unsupportedOperation )+import System.IO.Error+#endif+ -- | The platform specific type for a process identifier. -- -- This is always an integral type. Width and signedness are platform specific. -- -- @since 1.6.3.0-#if defined(WINDOWS)+#if defined(javascript_HOST_ARCH)+type Pid = Int+#elif defined(mingw32_HOST_OS) type Pid = ProcessId #else type Pid = CPid@@ -315,43 +372,47 @@ -- ---------------------------------------------------------------------------- -- callProcess/callCommand --- | Creates a new process to run the specified command with the given--- arguments, and wait for it to finish. If the command returns a non-zero--- exit code, an exception is raised.+-- | Creates a new process from the provided `CreateProcess`, and wait for it+-- to finish. If the process returns a non-zero exit code, an exception is+-- raised. -- -- If an asynchronous exception is thrown to the thread executing--- @callProcess@, the forked process will be terminated and--- @callProcess@ will wait (block) until the process has been+-- @callCreateProcess@, the forked process will be terminated and+-- @callCreateProcess@ will wait (block) until the process has been -- terminated. --+-- @since TODO+callCreateProcess :: CreateProcess -> IO ()+callCreateProcess = callCreateProcess_ "callCreateProcess"++-- | \"@callProcess cmd args@\" is a shorthand for+-- \"@'callCreateProcess' ('proc' cmd args)@\".+-- -- @since 1.2.0.0 callProcess :: FilePath -> [String] -> IO ()-callProcess cmd args = do- exit_code <- withCreateProcess_ "callProcess"- (proc cmd args) { delegate_ctlc = True } $ \_ _ _ p ->- waitForProcess p- case exit_code of- ExitSuccess -> return ()- ExitFailure r -> processFailedException "callProcess" cmd args r+callProcess cmd = callCreateProcess_ "callProcess" . proc cmd --- | Creates a new process to run the specified shell command. If the--- command returns a non-zero exit code, an exception is raised.------ If an asynchronous exception is thrown to the thread executing--- @callCommand@, the forked process will be terminated and--- @callCommand@ will wait (block) until the process has been--- terminated.+-- | \"@callCommand cmd@\" is a shorthand for \"@'callCreateProcess'+-- ('shell' cmd)@\". -- -- @since 1.2.0.0 callCommand :: String -> IO ()-callCommand cmd = do- exit_code <- withCreateProcess_ "callCommand"- (shell cmd) { delegate_ctlc = True } $ \_ _ _ p ->+callCommand = callCreateProcess_ "callCommand" . shell++callCreateProcess_ :: String -> CreateProcess -> IO ()+callCreateProcess_ fun command = do+ exit_code <- withCreateProcess_ fun+ command { delegate_ctlc = True } $ \_ _ _ p -> waitForProcess p case exit_code of ExitSuccess -> return ()- ExitFailure r -> processFailedException "callCommand" cmd [] r+ ExitFailure r -> processFailed fun (cmdspec command) r +processFailed :: String -> CmdSpec -> Int -> IO a+processFailed fun = \ case+ ShellCommand cmd -> processFailedException fun cmd []+ RawCommand cmd args -> processFailedException fun cmd args+ processFailedException :: String -> String -> [String] -> Int -> IO a processFailedException fun cmd args exit_code = ioError (mkIOError OtherError (fun ++ ": " ++ cmd ++@@ -361,6 +422,39 @@ -- ----------------------------------------------------------------------------+-- Secure process creation on Windows++-- $windows-migitations+--+-- In general it is strongly advised that any untrusted user input be validated before+-- being passed to a subprocess. One must be especially careful on Windows due to the+-- crude nature of the platform's argument passing scheme. Specifically, unlike POSIX+-- platforms, Windows treats the command-line not as a sequence of arguments but rather+-- as a single string. It is therefore the responsibility of the called process to tokenize+-- this string into distinct arguments.+--+-- While various programs on Windows tend to differ in their precise argument splitting+-- behavior, the scheme used by @process@'s 'RawCommand' 'CmdSpec' should work for+-- most reasonable programs. If you find that 'RawCommand' doesn't provide+-- the behavior you need, it is recommended to instead compose your command-line+-- manually and rather using the 'shell' 'CmdSpec'.+--+-- Additionally, the idiosyncratic escaping and string interpolation behavior of+-- the Windows @cmd.exe@ command interpreter is known to introduce considerable+-- complication to secure process creation. For this reason, @process@ implements+-- specific argument escaping logic when the executable's file extension suggests+-- that it is a batch file (e.g. @.bat@ or @.cmd@). However, this is not a+-- completely reliable mitigation as Windows will also silently execute batch files+-- when starting executables lacking a file extension (e.g. @callProcess "hello" []@+-- when a @hello.bat@ is present in @PATH@). For this reason, users are encouraged to+-- specify the file extension of invoked executables where possible, especially+-- when untrusted input is involved.+--+-- Users passed untrusted input to subprocesses on Windows are encouraged to review+-- <https://flatt.tech/research/posts/batbadbut-you-cant-securely-execute-commands-on-windows/>+-- for guidance on how to safely navigate these waters.++-- ---------------------------------------------------------------------------- -- Control-C handling on Unix -- $ctlc-handling@@ -383,7 +477,7 @@ -- @SIGINT@ to every process using the console. The standard solution is that -- while running an interactive program, ignore @SIGINT@ in the parent, and let -- it be handled in the child process. If that process then terminates due to--- the @SIGINT@ signal, then at that point treat it as if we had recieved the+-- the @SIGINT@ signal, then at that point treat it as if we had received the -- @SIGINT@ ourselves and begin an orderly shutdown. -- -- This behaviour is implemented by 'createProcess' (and@@ -459,7 +553,8 @@ -- -- * The command to run, which must be in the $PATH, or an absolute or relative path ----- * A list of separate command line arguments to the program+-- * A list of separate command line arguments to the program. See 'RawCommand' for+-- further discussion of Windows semantics. -- -- * A string to pass on standard input to the forked process. --@@ -518,14 +613,7 @@ case ex of ExitSuccess -> return output- ExitFailure r -> processFailedException "readCreateProcess" cmd args r- where- cmd = case cp of- CreateProcess { cmdspec = ShellCommand sc } -> sc- CreateProcess { cmdspec = RawCommand fp _ } -> fp- args = case cp of- CreateProcess { cmdspec = ShellCommand _ } -> []- CreateProcess { cmdspec = RawCommand _ args' } -> args'+ ExitFailure r -> processFailed "readCreateProcess" (cmdspec cp) r -- | @readProcessWithExitCode@ is like 'readProcess' but with two differences:@@ -597,28 +685,6 @@ (_,Nothing,_) -> error "readCreateProcessWithExitCode: Failed to get a stdout handle." (_,_,Nothing) -> error "readCreateProcessWithExitCode: Failed to get a stderr handle." --- | Fork a thread while doing something else, but kill it if there's an--- exception.------ This is important in the cases above because we want to kill the thread--- that is holding the Handle lock, because when we clean up the process we--- try to close that handle, which could otherwise deadlock.----withForkWait :: IO () -> (IO () -> IO a) -> IO a-withForkWait async body = do- waitVar <- newEmptyMVar :: IO (MVar (Either SomeException ()))- mask $ \restore -> do- tid <- forkIO $ try (restore async) >>= putMVar waitVar- let wait = takeMVar waitVar >>= either throwIO return- restore (body wait) `C.onException` killThread tid--ignoreSigPipe :: IO () -> IO ()-ignoreSigPipe = C.handle $ \e -> case e of- IOError { ioe_type = ResourceVanished- , ioe_errno = Just ioe }- | Errno ioe == ePIPE -> return ()- _ -> throwIO e- -- ---------------------------------------------------------------------------- -- showCommandForUser @@ -644,10 +710,14 @@ getPid (ProcessHandle mh _ _) = do p_ <- readMVar mh case p_ of-#ifdef WINDOWS+#if defined(javascript_HOST_ARCH) OpenHandle h -> do pid <- getProcessId h return $ Just pid+#elif defined(mingw32_HOST_OS)+ OpenHandle h -> do+ pid <- getProcessId h+ return $ Just pid #else OpenHandle pid -> return $ Just pid #endif@@ -665,8 +735,10 @@ -- @since 1.6.12.0 getCurrentPid :: IO Pid getCurrentPid =-#ifdef WINDOWS+#if defined(javascript_HOST_ARCH) getCurrentProcessId+#elif defined(mingw32_HOST_OS)+ getCurrentProcessId #else getProcessID #endif@@ -676,6 +748,7 @@ -- waitForProcess {- | Waits for the specified process to terminate, and returns its exit code.+On Unix systems, may throw 'UserInterrupt' when using 'delegate_ctlc'. GHC Note: in order to call @waitForProcess@ without blocking all the other threads in the system, you must compile the program with@@ -683,7 +756,8 @@ Note that it is safe to call @waitForProcess@ for the same process in multiple threads. When the process ends, threads blocking on this call will wake in-FIFO order.+FIFO order. When using 'delegate_ctlc' and the process is interrupted, only+the first waiting thread will throw 'UserInterrupt'. (/Since: 1.2.0.0/) On Unix systems, a negative value @'ExitFailure' -/signum/@ indicates that the child was terminated by signal @/signum/@.@@ -703,17 +777,19 @@ OpenHandle h -> do -- don't hold the MVar while we call c_waitForProcess... e <- waitForProcess' h- e' <- modifyProcessHandle ph $ \p_' ->+ (e', was_open) <- modifyProcessHandle ph $ \p_' -> case p_' of- ClosedHandle e' -> return (p_', e')+ ClosedHandle e' -> return (p_', (e', False)) OpenExtHandle{} -> fail "waitForProcess(OpenExtHandle): this cannot happen" OpenHandle ph' -> do closePHANDLE ph'- when delegating_ctlc $- endDelegateControlC e- return (ClosedHandle e, e)+ return (ClosedHandle e, (e, True))+ -- endDelegateControlC after closing the handle, since it+ -- may throw UserInterrupt+ when (was_open && delegating_ctlc) $+ endDelegateControlC e return e'-#if defined(WINDOWS)+#if defined(mingw32_HOST_OS) OpenExtHandle h job -> do -- First wait for completion of the job... waitForJobCompletion job@@ -725,9 +801,8 @@ OpenExtHandle ph' job' -> do closePHANDLE ph' closePHANDLE job'- when delegating_ctlc $- endDelegateControlC e return (ClosedHandle e, e)+ -- omit endDelegateControlC since it's a no-op on Windows return e' #else OpenExtHandle _ _job ->@@ -743,7 +818,11 @@ waitForProcess' :: PHANDLE -> IO ExitCode waitForProcess' h = alloca $ \pret -> do+#if defined(javascript_HOST_ARCH)+ throwErrnoIfMinus1Retry_ "waitForProcess" (C.interruptible $ c_waitForProcess h pret)+#else throwErrnoIfMinus1Retry_ "waitForProcess" (allowInterrupt >> c_waitForProcess h pret)+#endif mkExitCode <$> peek pret mkExitCode :: CInt -> ExitCode@@ -761,7 +840,8 @@ @'Just' e@ is returned where @e@ is the exit code of the process. On Unix systems, see 'waitForProcess' for the meaning of exit codes-when the process died as the result of a signal.+when the process died as the result of a signal. May throw+'UserInterrupt' when using 'delegate_ctlc'. -} getProcessExitCode :: ProcessHandle -> IO (Maybe ExitCode)@@ -784,6 +864,8 @@ let e | code == 0 = ExitSuccess | otherwise = ExitFailure (fromIntegral code) return (ClosedHandle e, (Just e, True))+ -- endDelegateControlC after closing the handle, since it+ -- may throw UserInterrupt case m_e of Just e | was_open && delegating_ctlc -> endDelegateControlC e _ -> return ()@@ -836,7 +918,7 @@ withProcessHandle ph $ \p_ -> case p_ of ClosedHandle _ -> return ()-#if defined(WINDOWS)+#if defined(mingw32_HOST_OS) OpenExtHandle{} -> terminateJobUnsafe p_ 1 >> return () #else OpenExtHandle{} -> error "terminateProcess with OpenExtHandle should not happen on POSIX."@@ -851,6 +933,38 @@ -- ---------------------------------------------------------------------------- -- Interface to C bits +#if defined(wasm32_HOST_ARCH)++c_terminateProcess :: PHANDLE -> IO CInt+c_terminateProcess _ = ioError (ioeSetLocation unsupportedOperation "terminateProcess")++c_getProcessExitCode :: PHANDLE -> Ptr CInt -> IO CInt+c_getProcessExitCode _ _ = ioError (ioeSetLocation unsupportedOperation "getProcessExitCode")++c_waitForProcess :: PHANDLE -> Ptr CInt -> IO CInt+c_waitForProcess _ _ = ioError (ioeSetLocation unsupportedOperation "waitForProcess")++#elif defined(javascript_HOST_ARCH)++foreign import javascript unsafe "h$process_terminateProcess"+ c_terminateProcess+ :: PHANDLE+ -> IO Int++foreign import javascript unsafe "h$process_getProcessExitCode"+ c_getProcessExitCode+ :: PHANDLE+ -> Ptr Int+ -> IO Int++foreign import javascript interruptible "h$process_waitForProcess"+ c_waitForProcess+ :: PHANDLE+ -> Ptr CInt+ -> IO CInt++#else+ foreign import ccall unsafe "terminateProcess" c_terminateProcess :: PHANDLE@@ -868,6 +982,7 @@ -> Ptr CInt -> IO CInt +#endif -- ---------------------------------------------------------------------------- -- Old deprecated variants
System/Process/Common.hs view
@@ -19,27 +19,31 @@ , mbFd , mbPipe , pfdToHandle+ , rawFdToHandle -- Avoid a warning on Windows-#ifdef WINDOWS+#if defined(mingw32_HOST_OS) , CGid (..) #else , CGid #endif --- WINIO is only available on GHC 8.12 and up.-#if defined(__IO_MANAGER_WINIO__)+#if defined(mingw32_HOST_OS) , HANDLE+-- WINIO is only available on GHC 9.0 and up.+# if defined(__IO_MANAGER_WINIO__) , mbHANDLE , mbPipeHANDLE+ , rawHANDLEToHandle+# endif #endif ) where import Control.Concurrent import Control.Exception-import Data.String+import Data.String ( IsString(..) ) import Foreign.Ptr-import Foreign.Storable+import Foreign.Storable ( Storable(peek) ) import System.Posix.Internals import GHC.IO.Exception@@ -57,9 +61,13 @@ import Data.Typeable import System.IO (IOMode) +#if defined(javascript_HOST_ARCH)+import GHC.JS.Prim (JSVal)+#endif+ -- We do a minimal amount of CPP here to provide uniform data types across -- Windows and POSIX.-#ifdef WINDOWS+#if defined(mingw32_HOST_OS) import Data.Word (Word32) import System.Win32.DebugApi (PHANDLE) #if defined(__IO_MANAGER_WINIO__)@@ -69,7 +77,9 @@ import System.Posix.Types #endif -#ifdef WINDOWS+#if defined(javascript_HOST_ARCH)+type PHANDLE = JSVal+#elif defined(mingw32_HOST_OS) -- Define some missing types for Windows compatibility. Note that these values -- will never actually be used, as the setuid/setgid system calls are not -- applicable on Windows. No value of this type will ever exist.@@ -80,7 +90,6 @@ #else type PHANDLE = CPid #endif- data CreateProcess = CreateProcess{ cmdspec :: CmdSpec, -- ^ Executable & arguments, or shell command. If 'cwd' is 'Nothing', relative paths are resolved with respect to the current working directory. If 'cwd' is provided, it is implementation-dependent whether relative paths are resolved with respect to 'cwd' or the current working directory, so absolute paths should be used to ensure portability. cwd :: Maybe FilePath, -- ^ Optional path to the working directory for the new process@@ -88,12 +97,11 @@ std_in :: StdStream, -- ^ How to determine stdin std_out :: StdStream, -- ^ How to determine stdout std_err :: StdStream, -- ^ How to determine stderr- close_fds :: Bool, -- ^ Close all file descriptors except stdin, stdout and stderr in the new process (on Windows, only works if std_in, std_out, and std_err are all Inherit). This implementation will call close an every fd from 3 to the maximum of open files, which can be slow for high maximum of open files.- create_group :: Bool, -- ^ Create a new process group+ -- XXX verify what happens with fds in nodejs child processes+ close_fds :: Bool, -- ^ Close all file descriptors except stdin, stdout and stderr in the new process (on Windows, only works if std_in, std_out, and std_err are all Inherit). This implementation will call close on every fd from 3 to the maximum of open files, which can be slow for high maximum of open files.+ create_group :: Bool, -- ^ Create a new process group. On JavaScript this also creates a new session. delegate_ctlc:: Bool, -- ^ Delegate control-C handling. Use this for interactive console processes to let them handle control-C themselves (see below for details). --- -- On Windows this has no effect.- -- -- @since 1.2.0.0 detach_console :: Bool, -- ^ Use the windows DETACHED_PROCESS flag when creating the process; does nothing on other platforms. --@@ -103,15 +111,15 @@ -- Default: @False@ -- -- @since 1.3.0.0- new_session :: Bool, -- ^ Use posix setsid to start the new process in a new session; does nothing on other platforms.+ new_session :: Bool, -- ^ Use posix setsid to start the new process in a new session; starts process in a new session on JavaScript; does nothing on other platforms. -- -- @since 1.3.0.0- child_group :: Maybe GroupID, -- ^ Use posix setgid to set child process's group id; does nothing on other platforms.+ child_group :: Maybe GroupID, -- ^ Use posix setgid to set child process's group id; works for JavaScript when system running nodejs is posix. does nothing on other platforms. -- -- Default: @Nothing@ -- -- @since 1.4.0.0- child_user :: Maybe UserID, -- ^ Use posix setuid to set child process's user id; does nothing on other platforms.+ child_user :: Maybe UserID, -- ^ Use posix setuid to set child process's user id; works for JavaScript when system running nodejs is posix. does nothing on other platforms. -- -- Default: @Nothing@ --@@ -157,6 +165,14 @@ -- see the -- <http://msdn.microsoft.com/en-us/library/windows/desktop/aa365527%28v=vs.85%29.aspx documentation> -- for the Windows @SearchPath@ API.+ --+ -- Windows does not have a mechanism for passing multiple arguments.+ -- When using @RawCommand@ on Windows, the command line is serialised+ -- into a string, with arguments quoted separately. Command line+ -- parsing is up individual programs, so the default behaviour may+ -- not work for some programs. If you are not getting the desired+ -- results, construct the command line yourself and use 'ShellCommand'.+ -- deriving (Show, Eq) @@ -190,6 +206,9 @@ -- ProcessHandle type data ProcessHandle__ = OpenHandle { phdlProcessHandle :: PHANDLE }+ -- | 'OpenExtHandle' is only applicable for+ -- Windows platform. It represents [Job+ -- Objects](https://learn.microsoft.com/en-us/windows/win32/procthread/job-objects). | OpenExtHandle { phdlProcessHandle :: PHANDLE -- ^ the process , phdlJobHandle :: PHANDLE@@ -242,12 +261,17 @@ mbFd _fun std Inherit = return std mbFd _fn _std NoStream = return (-2) mbFd fun _std (UseHandle hdl) =- withHandle fun hdl $ \Handle__{haDevice=dev,..} ->+ withHandle fun hdl $ \Handle__{haDevice=dev,..} -> do case cast dev of Just fd -> do+#if !defined(javascript_HOST_ARCH) -- clear the O_NONBLOCK flag on this FD, if it is set, since -- we're exposing it externally (see #3316) fd' <- FD.setNonBlockingMode fd False+#else+ -- on the JavaScript platform we cannot change the FD flags+ fd' <- pure fd+#endif return (Handle__{haDevice=fd',..}, FD.fdFD fd') Nothing -> ioError (mkIOError illegalOperationErrorType@@ -259,8 +283,11 @@ mbPipe _std _pfd _mode = return Nothing pfdToHandle :: Ptr FD -> IOMode -> IO Handle-pfdToHandle pfd mode = do- fd <- peek pfd+pfdToHandle pfd mode =+ ( \ fd -> rawFdToHandle fd mode ) =<< peek pfd++rawFdToHandle :: FD -> IOMode -> IO Handle+rawFdToHandle fd mode = do let filepath = "fd:" ++ show fd (fD,fd_type) <- FD.mkFD (fromIntegral fd) mode (Just (Stream,0,0)) -- avoid calling fstat()@@ -274,6 +301,11 @@ #endif mkHandleFromFD fD' fd_type filepath mode False {-is_socket-} (Just enc) ++#if defined(mingw32_HOST_OS) && !defined(__IO_MANAGER_WINIO__)+type HANDLE = Ptr ()+#endif+ #if defined(__IO_MANAGER_WINIO__) -- It is not completely safe to pass the values -1 and -2 as HANDLE as it's an -- unsigned type. -1 additionally is also the value for INVALID_HANDLE. However@@ -288,10 +320,14 @@ mbHANDLE _std (UseHandle hdl) = handleToHANDLE hdl mbPipeHANDLE :: StdStream -> Ptr HANDLE -> IOMode -> IO (Maybe Handle)-mbPipeHANDLE CreatePipe pfd mode =- do raw_handle <- peek pfd- let hwnd = fromHANDLE raw_handle :: Io NativeHandle- ident = "hwnd:" ++ show raw_handle- Just <$> mkHandleFromHANDLE hwnd Stream ident mode Nothing+mbPipeHANDLE CreatePipe pfd mode =+ Just <$> ( ( \ hANDLE -> rawHANDLEToHandle hANDLE mode ) =<< peek pfd ) mbPipeHANDLE _std _pfd _mode = return Nothing++rawHANDLEToHandle :: HANDLE -> IOMode-> IO Handle+rawHANDLEToHandle raw_handle mode = do+ let hwnd = fromHANDLE raw_handle :: Io NativeHandle+ ident = "hwnd:" ++ show raw_handle+ enc <- getLocaleEncoding+ mkHandleFromHANDLE hwnd Stream ident mode (Just enc) #endif
+ System/Process/CommunicationHandle.hs view
@@ -0,0 +1,155 @@+{-# LANGUAGE CPP #-}+{-# LANGUAGE RankNTypes #-}++module System.Process.CommunicationHandle+ ( -- * 'CommunicationHandle': a 'Handle' that can be serialised,+ -- enabling inter-process communication.+ CommunicationHandle+ -- NB: opaque, as the representation depends on the operating system+ , openCommunicationHandleRead+ , openCommunicationHandleWrite+ , closeCommunicationHandle+ -- * Creating 'CommunicationHandle's to communicate with+ -- a child process+ , createWeReadTheyWritePipe+ , createTheyReadWeWritePipe+ -- * High-level API+ , readCreateProcessWithExitCodeCommunicationHandle+ )+ where++import GHC.IO.Handle (Handle)++import System.Process.CommunicationHandle.Internal+import System.Process.Internals+ ( CreateProcess(..), ignoreSigPipe, withForkWait )+import System.Process+ ( withCreateProcess, waitForProcess )++import GHC.IO (evaluate)+import GHC.IO.Handle (hClose)+import System.Exit (ExitCode)++import Control.DeepSeq (NFData, rnf)++--------------------------------------------------------------------------------+-- Communication handles.++-- | Turn the 'CommunicationHandle' into a 'Handle' that can be read from+-- in the current process.+--+-- The returned 'Handle' does not have any finalizers attached to it;+-- use 'hClose' to close it.+--+-- @since 1.6.20.0+openCommunicationHandleRead :: CommunicationHandle -> IO Handle+openCommunicationHandleRead = useCommunicationHandle True++-- | Turn the 'CommunicationHandle' into a 'Handle' that can be written to+-- in the current process.+--+-- The returned 'Handle' does not have any finalizers attached to it;+-- use 'hClose' to close it.+--+-- @since 1.6.20.0+openCommunicationHandleWrite :: CommunicationHandle -> IO Handle+openCommunicationHandleWrite = useCommunicationHandle False++--------------------------------------------------------------------------------+-- Creating pipes.++-- | Create a pipe @(weRead,theyWrite)@ that the current process can read from,+-- and whose write end can be passed to a child process in order to receive data from it.+--+-- The returned 'Handle' does not have any finalizers attached to it;+-- use 'hClose' to close it.+--+-- See 'CommunicationHandle'.+--+-- @since 1.6.20.0+createWeReadTheyWritePipe+ :: IO (Handle, CommunicationHandle)+createWeReadTheyWritePipe =+ createCommunicationPipe id False+ -- safe choice: passAsyncHandleToChild = False, in case the child cannot+ -- deal with async I/O (see e.g. https://gitlab.haskell.org/ghc/ghc/-/issues/21610#note_431632)+ -- expert users can invoke createCommunicationPipe from+ -- System.Process.CommunicationHandle.Internals if they are sure that the+ -- child process they will communicate with supports async I/O on Windows++-- | Create a pipe @(theyRead,weWrite)@ that the current process can write to,+-- and whose read end can be passed to a child process in order to send data to it.+--+-- The returned 'Handle' does not have any finalizers attached to it;+-- use 'hClose' to close it.+--+-- See 'CommunicationHandle'.+--+-- @since 1.6.20.0+createTheyReadWeWritePipe+ :: IO (CommunicationHandle, Handle)+createTheyReadWeWritePipe =+ sw <$> createCommunicationPipe sw False+ -- safe choice: passAsyncHandleToChild = False, in case the child cannot+ -- deal with async I/O (see e.g. https://gitlab.haskell.org/ghc/ghc/-/issues/21610#note_431632)+ -- expert users can invoke createCommunicationPipe from+ -- System.Process.CommunicationHandle.Internals if they are sure that the+ -- child process they will communicate with supports async I/O on Windows+ where+ sw (a,b) = (b,a)++--------------------------------------------------------------------------------++-- | A version of 'readCreateProcessWithExitCode' that communicates with the+-- child process through a pair of 'CommunicationHandle's.+--+-- Example usage:+--+-- > readCreateProcessWithExitCodeCommunicationHandle+-- > (\(chTheyRead, chTheyWrite) -> proc "child-exe" [show chTheyRead, show chTheyWrite])+-- > (\ hWeRead -> hGetContents hWeRead)+-- > (\ hWeWrite -> hPut hWeWrite "xyz")+--+-- where @child-exe@ is a separate executable that is implemented as:+--+-- > main = do+-- > [chRead, chWrite] <- getArgs+-- > hRead <- openCommunicationHandleRead $ read chRead+-- > hWrite <- openCommunicationHandleWrite $ read chWrite+-- > input <- hGetContents hRead+-- > hPut hWrite $ someFn input+-- > hClose hWrite+--+-- @since 1.6.20.0+readCreateProcessWithExitCodeCommunicationHandle+ :: NFData a+ => ((CommunicationHandle, CommunicationHandle) -> CreateProcess)+ -- ^ Process to spawn, given a @(read, write)@ pair of+ -- 'CommunicationHandle's that are inherited by the spawned process+ -> (Handle -> IO a)+ -- ^ read action+ -> (Handle -> IO ())+ -- ^ write action+ -> IO (ExitCode, a)+readCreateProcessWithExitCodeCommunicationHandle mkProg readAction writeAction = do+ (chTheyRead, hWeWrite ) <- createTheyReadWeWritePipe+ (hWeRead , chTheyWrite) <- createWeReadTheyWritePipe+ let cp = mkProg (chTheyRead, chTheyWrite)+ -- The following implementation parallels 'readCreateProcess'+ withCreateProcess cp $ \ _ _ _ ph -> do++ -- Close the parent's references to the 'CommunicationHandle's after they+ -- have been inherited by the child (we don't want to keep pipe ends open).+ closeCommunicationHandle chTheyWrite+ closeCommunicationHandle chTheyRead++ -- Fork off a thread that waits on the output.+ output <- readAction hWeRead+ withForkWait (evaluate $ rnf output) $ \ waitOut -> do+ ignoreSigPipe $ writeAction hWeWrite+ ignoreSigPipe $ hClose hWeWrite+ waitOut+ hClose hWeRead++ ex <- waitForProcess ph+ return (ex, output)
+ System/Process/CommunicationHandle/Internal.hsc view
@@ -0,0 +1,311 @@+{-# LANGUAGE CPP #-}+{-# LANGUAGE RankNTypes #-}++module System.Process.CommunicationHandle.Internal+ ( -- * 'CommunicationHandle': a 'Handle' that can be serialised,+ -- enabling inter-process communication.+ CommunicationHandle(..)+ , closeCommunicationHandle+ -- ** Internal functions+ , useCommunicationHandle+ , createCommunicationPipe+ )+ where++import Control.Arrow ( first )+import GHC.IO.Handle (Handle, hClose)+#if defined(mingw32_HOST_OS)+import Foreign.C (CInt(..), throwErrnoIf_)+import Foreign.Marshal (alloca)+import Foreign.Ptr (ptrToWordPtr, wordPtrToPtr)+import Foreign.Storable (Storable(peek))+import GHC.IO.Handle.FD (fdToHandle)+import GHC.IO.IOMode (IOMode(ReadMode, WriteMode))+import System.Process.Windows (HANDLE, mkNamedPipe)+## if defined(__IO_MANAGER_WINIO__)+import Control.Exception (catch, throwIO)+import GHC.IO (onException)+import GHC.IO.Device as IODevice (close, devType)+import GHC.IO.Encoding (getLocaleEncoding)+import GHC.IO.Exception (IOException(..), IOErrorType(InvalidArgument))+import GHC.IO.IOMode (IOMode(ReadWriteMode))+import GHC.IO.Handle.Windows (mkHandleFromHANDLE)+import GHC.IO.SubSystem ((<!>))+import GHC.IO.Windows.Handle (Io, NativeHandle, fromHANDLE)+import GHC.Event.Windows (associateHandle')+import System.Process.Common (rawHANDLEToHandle)+## else+import System.Process.Common (rawFdToHandle)+## endif++#include <fcntl.h> /* for _O_BINARY */++#else+import GHC.IO.FD+ ( mkFD, setNonBlockingMode )+import GHC.IO.Handle+ ( noNewlineTranslation )+#if MIN_VERSION_base(4,16,0)+import GHC.IO.Handle.Internals+ ( mkFileHandleNoFinalizer )+#else+import GHC.IO.IOMode+ ( IOMode(..) )+import GHC.IO.Handle.Types+ ( HandleType(..) )+import GHC.IO.Handle.Internals+ ( mkHandle )+#endif+import System.Posix+ ( Fd(..)+ , FdOption(..), setFdOption+ )+import System.Posix.Internals+ ( fdGetMode )+import System.Process.Internals+ ( createPipeFd )+#endif++--------------------------------------------------------------------------------+-- Communication handles.++-- | A 'CommunicationHandle' is an abstraction over operating-system specific+-- internal representation of a 'Handle', which can be communicated through a+-- command-line interface.+--+-- In a typical use case, the parent process creates a pipe, using e.g.+-- 'createWeReadTheyWritePipe' or 'createTheyReadWeWritePipe'.+--+-- - One end of the pipe is a 'Handle', which can be read from/written to by+-- the parent process.+-- - The other end is a 'CommunicationHandle', which can be inherited by a+-- child process. A reference to the handle can be serialised (using+-- the 'Show' instance), and passed to the child process.+-- It is recommended to close the parent's reference to the 'CommunicationHandle'+-- using 'closeCommunicationHandle' after it has been inherited by the child+-- process.+-- - The child process can deserialise the 'CommunicationHandle' (using+-- the 'Read' instance), and then use 'openCommunicationHandleWrite' or+-- 'openCommunicationHandleRead' in order to retrieve a 'Handle' which it+-- can write to/read from.+--+-- 'readCreateProcessWithExitCodeCommunicationHandle' provides a high-level API+-- to this functionality. See there for example code.+--+-- @since 1.6.20.0+newtype CommunicationHandle =+ CommunicationHandle+##if defined(mingw32_HOST_OS)+ HANDLE+##else+ Fd+##endif+ deriving ( Eq, Ord )++#if defined(mingw32_HOST_OS)+type Fd = CInt+#endif++-- @since 1.6.20.0+instance Show CommunicationHandle where+ showsPrec p (CommunicationHandle h) =+ showsPrec p+##if defined(mingw32_HOST_OS)+ $ ptrToWordPtr+##endif+ h++-- @since 1.6.20.0+instance Read CommunicationHandle where+ readsPrec p str =+ fmap+ ( first $ CommunicationHandle+##if defined(mingw32_HOST_OS)+ . wordPtrToPtr+##endif+ ) $+ readsPrec p str++-- | Internal function used to define 'openCommunicationHandleRead' and+-- openCommunicationHandleWrite.+useCommunicationHandle :: Bool -> CommunicationHandle -> IO Handle+useCommunicationHandle _wantToRead (CommunicationHandle ch) = do+##if defined(__IO_MANAGER_WINIO__)+ return ()+ <!> associateHandleWithFallback _wantToRead ch+##endif+ getGhcHandle ch++-- | Close a 'CommunicationHandle'.+--+-- Use this to close the 'CommunicationHandle' in the parent process after+-- the 'CommunicationHandle' has been inherited by the child process.+--+-- @since 1.6.20.0+closeCommunicationHandle :: CommunicationHandle -> IO ()+closeCommunicationHandle (CommunicationHandle ch) =+ hClose =<< getGhcHandle ch++##if defined(__IO_MANAGER_WINIO__)+-- Internal function used when associating a 'HANDLE' with the current process.+--+-- Explanation: with WinIO, a synchronous handle cannot be associated with the+-- current process, while an asynchronous one must be associated before being usable.+--+-- In a child process, we don't necessarily know which kind of handle we will receive,+-- so we try to associate it (in case it is an asynchronous handle). This might+-- fail (if the handle is synchronous), in which case we continue in synchronous+-- mode (without associating).+--+-- With the current API, inheritable handles in WinIO created with mkNamedPipe+-- are synchronous, but it's best to be safe in case the child receives an+-- asynchronous handle anyway.+associateHandleWithFallback :: Bool -> HANDLE -> IO ()+associateHandleWithFallback _wantToRead h =+ associateHandle' h `catch` handler+ where+ handler :: IOError -> IO ()+ handler ioErr@(IOError { ioe_handle = _mbErrHandle, ioe_type = errTy, ioe_errno = mbErrNo })+ -- Catches the following error that occurs when attemping to associate+ -- a HANDLE that does not have OVERLAPPING mode set:+ --+ -- associateHandleWithIOCP: invalid argument (The parameter is incorrect.)+ | InvalidArgument <- errTy+ , Just 22 <- mbErrNo+ = return ()+ | otherwise+ = throwIO ioErr+##endif++-- | Gets a GHC Handle File description from the given OS Handle or POSIX fd.++#if defined(mingw32_HOST_OS)+getGhcHandle :: HANDLE -> IO Handle+getGhcHandle =+ getGhcHandlePOSIX+## if defined(__IO_MANAGER_WINIO__)+ <!> getGhcHandleNative+## endif++getGhcHandlePOSIX :: HANDLE -> IO Handle+getGhcHandlePOSIX handle = openHANDLE handle >>= fdToHandle++openHANDLE :: HANDLE -> IO Fd+openHANDLE handle = _open_osfhandle handle (#const _O_BINARY)++foreign import ccall "io.h _open_osfhandle"+ _open_osfhandle :: HANDLE -> CInt -> IO Fd++## if defined(__IO_MANAGER_WINIO__)+getGhcHandleNative :: HANDLE -> IO Handle+getGhcHandleNative hwnd =+ do mb_codec <- fmap Just getLocaleEncoding+ let iomode = ReadWriteMode+ native_handle = fromHANDLE hwnd :: Io NativeHandle+ hw_type <- IODevice.devType $ native_handle+ mkHandleFromHANDLE native_handle hw_type (show hwnd) iomode mb_codec+ `onException` IODevice.close native_handle+## endif+#else+getGhcHandle :: Fd -> IO Handle+getGhcHandle (Fd fdint) = do+ iomode <- fdGetMode fdint+ (fd0, _) <- mkFD fdint iomode Nothing False True+ -- The following copies over 'mkHandleFromFDNoFinalizer'+ fd <- setNonBlockingMode fd0 True+ let fd_str = "<file descriptor: " ++ show fd ++ ">"+# if MIN_VERSION_base(4,16,0)+ mkFileHandleNoFinalizer fd fd_str iomode Nothing noNewlineTranslation+# else+ mkHandle fd fd_str (ioModeToHandleType iomode) True Nothing noNewlineTranslation+ Nothing Nothing++ioModeToHandleType :: IOMode -> HandleType+ioModeToHandleType mode =+ case mode of+ ReadMode -> ReadHandle+ WriteMode -> WriteHandle+ ReadWriteMode -> ReadWriteHandle+ AppendMode -> AppendHandle+# endif+#endif++--------------------------------------------------------------------------------+-- Creating pipes.++-- | Internal helper function used to define 'createWeReadTheyWritePipe'+-- and 'createTheyReadWeWritePipe' while reducing code duplication.+--+-- The returned 'Handle' does not have any finalizers attached to it;+-- use 'hClose' to close it.+createCommunicationPipe+ :: ( forall a. (a, a) -> (a, a) )+ -- ^ 'id' (we read, they write) or 'swap' (they read, we write)+ -> Bool -- ^ whether to pass a handle supporting asynchronous I/O to the child process+ -- (this flag only has an effect on Windows and when using WinIO)+ -> IO (Handle, CommunicationHandle)+createCommunicationPipe swapIfTheyReadWeWrite _passAsyncHandleToChild = do+##if !defined(mingw32_HOST_OS)+ -- NB: it's important to use 'createPipeFd' here.+ --+ -- Were we to instead use 'createPipe', we would create a Handle for both pipe+ -- ends, including the end we pass to the child.+ -- Such Handle would have a finalizer which closes the underlying file descriptor.+ -- However, we will already close the FD after it is inherited by the child.+ -- This could lead to the following scenario:+ --+ -- - the parent creates a new pipe, e.g. pipe2([7,8]),+ -- - the parent spawns a child process, and lets FD 8 be inherited by the child,+ -- - the parent closes FD 8,+ -- - the parent opens FD 8 for some other purpose, e.g. for writing to a file,+ -- - the finalizer for the Handle wrapping FD 8 runs, closing FD 8, even though+ -- it is now in use for a completely different purpose.+ (ourFd, theirFd) <- swapIfTheyReadWeWrite <$> createPipeFd+ -- Don't allow the child process to inherit a parent file descriptor+ -- (such inheritance happens by default on Unix).+ setFdOption (Fd ourFd) CloseOnExec True+ -- NB: we will be closing this handle manually, so don't use 'handleFromFd'+ -- which attaches a finalizer that closes the FD. See the above comment+ -- about 'createPipeFd'.+ ourHandle <- getGhcHandle (Fd ourFd)+ return (ourHandle, CommunicationHandle $ Fd theirFd)+##else+ trueForWinIO <-+ return False+## if defined (__IO_MANAGER_WINIO__)+ <!> return True+## endif+ -- On Windows, use mkNamedPipe to create the two pipe ends.+ alloca $ \ pfdStdInput ->+ alloca $ \ pfdStdOutput -> do+ let (inheritRead, inheritWrite) = swapIfTheyReadWeWrite (False, True)+ -- WinIO:+ -- - make the parent pipe end overlapped,+ -- - make the child end overlapped if requested,+ -- Otherwise: make both pipe ends synchronous.+ overlappedRead = trueForWinIO && ( _passAsyncHandleToChild || not inheritRead )+ overlappedWrite = trueForWinIO && ( _passAsyncHandleToChild || not inheritWrite )+ throwErrnoIf_ (==False) "mkNamedPipe" $+ mkNamedPipe+ pfdStdInput inheritRead overlappedRead+ pfdStdOutput inheritWrite overlappedWrite+ let ((ourPtr, ourMode), (theirPtr, _theirMode)) =+ swapIfTheyReadWeWrite ((pfdStdInput, ReadMode), (pfdStdOutput, WriteMode))+ ourHANDLE <- peek ourPtr+ theirHANDLE <- peek theirPtr+ -- With WinIO, we need to associate any handles we are going to use in+ -- the current process before being able to use them.+ return ()+## if defined (__IO_MANAGER_WINIO__)+ <!> associateHandle' ourHANDLE+## endif+ ourHandle <-+## if !defined (__IO_MANAGER_WINIO__)+ ( \ fd -> rawFdToHandle fd ourMode ) =<< openHANDLE ourHANDLE+## else+ -- NB: it's OK to call the following function even when we're not+ -- using WinIO at runtime, so we don't use <!>.+ rawHANDLEToHandle ourHANDLE ourMode+## endif+ return $ (ourHandle, CommunicationHandle theirHANDLE)+##endif
+ System/Process/Environment/OsString.hs view
@@ -0,0 +1,41 @@+{-# LANGUAGE CPP #-}+{-# LANGUAGE PackageImports #-}++-- | Miscellaneous information about the system environment, for 'OsString'.+--+-- @since 1.6.26.0+module System.Process.Environment.OsString (+ getArgs,+ getEnv,+ getEnvironment,+ ) where++import Data.Coerce (coerce)+#if MIN_VERSION_filepath(1, 5, 0)+import "os-string" System.OsString.Internal.Types (OsString(OsString))+#else+import "filepath" System.OsString.Internal.Types (OsString(OsString))+#endif+#if defined(mingw32_HOST_OS)+import qualified System.Win32.WindowsString.Console as Platform+#else+import qualified System.Posix.Env.PosixString as Platform+#endif++-- | 'System.Environment.getArgs' for 'OsString'.+--+-- @since 1.6.26.0+getArgs :: IO [OsString]+getArgs = coerce Platform.getArgs++-- | 'System.Environment.getEnv' for 'OsString'.+--+-- @since 1.6.26.0+getEnv :: OsString -> IO (Maybe OsString)+getEnv = coerce Platform.getEnv++-- | 'System.Environment.getEnvironment' for 'OsString'.+--+-- @since 1.6.26.0+getEnvironment :: IO [(OsString, OsString)]+getEnvironment = coerce Platform.getEnvironment
System/Process/Internals.hs view
@@ -22,7 +22,7 @@ module System.Process.Internals ( ProcessHandle(..), ProcessHandle__(..), PHANDLE, closePHANDLE, mkProcessHandle,-#ifdef WINDOWS+#if defined(mingw32_HOST_OS) CGid(..), #else CGid,@@ -39,32 +39,42 @@ endDelegateControlC, stopDelegateControlC, unwrapHandles,-#ifdef WINDOWS+#if defined(mingw32_HOST_OS) terminateJob, terminateJobUnsafe, waitForJobCompletion, timeout_Infinite, #else+#if !defined(javascript_HOST_ARCH) pPrPr_disableITimers, c_execvpe,- ignoreSignal, defaultSignal, runInteractiveProcess_lock, #endif+ ignoreSignal, defaultSignal,+#endif withFilePathException, withCEnvironment, translate, createPipe, createPipeFd, interruptProcessGroupOf,+ withForkWait,+ ignoreSigPipe, ) where +import Control.Concurrent+import Control.Exception (SomeException, mask, try, throwIO)+import qualified Control.Exception as C import Foreign.C import System.IO +import GHC.IO.Exception ( IOErrorType(..), IOException(..) ) import GHC.IO.Handle.FD (fdToHandle) import System.Posix.Internals (FD) import System.Process.Common -#ifdef WINDOWS+#if defined(javascript_HOST_ARCH)+import System.Process.JavaScript+#elif defined(mingw32_HOST_OS) import System.Process.Windows #else import System.Process.Posix@@ -85,7 +95,12 @@ -- -- @since 1.2.1.0 createProcess_- :: String -- ^ function name (for error messages)+ :: String+ -- ^ Function name (for error messages).+ --+ -- This can be any 'String', but will typically be the name of the caller.+ -- E.g., 'spawnProcess' passes @"spawnProcess"@ here when calling+ -- 'createProcess_'. -> CreateProcess -> IO (Maybe Handle, Maybe Handle, Maybe Handle, ProcessHandle) createProcess_ msg proc_ = unwrapHandles `fmap` createProcess_Internal msg proc_@@ -166,7 +181,6 @@ -> Maybe CLong -- ^ handler for SIGINT -> Maybe CLong -- ^ handler for SIGQUIT -> IO (Maybe Handle, Maybe Handle, Maybe Handle, ProcessHandle)--- On Windows, setting delegate_ctlc has no impact runGenProcess_ fun c (Just sig) (Just sig') | isDefaultSignal sig && sig == sig' = createProcess_ fun c { delegate_ctlc = True } runGenProcess_ fun c _ _ = createProcess_ fun c@@ -177,6 +191,33 @@ -- | Create a pipe for interprocess communication and return a -- @(readEnd, writeEnd)@ `Handle` pair. --+-- * WinIO Support+--+-- When this function is used with WinIO enabled it's the caller's+-- responsibility to register the handles with the I/O manager.+-- If this is not done the operation will deadlock. Association can+-- be done as follows:+--+-- @+-- #if defined(__IO_MANAGER_WINIO__)+-- import GHC.IO.SubSystem ((`<!>`))+-- import GHC.IO.Handle.Windows (handleToHANDLE)+-- import GHC.Event.Windows (associateHandle')+-- #endif+--+-- ...+--+-- #if defined(__IO_MANAGER_WINIO__)+-- return () \<!> do+-- associateHandle' =\<\< handleToHANDLE readEnd+-- #endif+-- @+--+-- Only associate handles that you are in charge of read/writing to.+-- Do not associate handles passed to another process. It's the+-- process's responsibility to register the handle if it supports+-- async access.+-- -- @since 1.2.1.0 createPipe :: IO (Handle, Handle) createPipe = createPipeInternal@@ -208,3 +249,29 @@ :: ProcessHandle -- ^ A process in the process group -> IO () interruptProcessGroupOf = interruptProcessGroupOfInternal++-- | Fork a thread while doing something else, but kill it if there's an+-- exception.+--+-- This is important in the cases above because we want to kill the thread+-- that is holding the Handle lock, because when we clean up the process we+-- try to close that handle, which could otherwise deadlock.+--+-- @since 1.6.20.0+withForkWait :: IO () -> (IO () -> IO a) -> IO a+withForkWait async body = do+ waitVar <- newEmptyMVar :: IO (MVar (Either SomeException ()))+ mask $ \restore -> do+ tid <- forkIO $ try (restore async) >>= putMVar waitVar+ let wait = takeMVar waitVar >>= either throwIO return+ restore (body wait) `C.onException` killThread tid++-- | Handle any SIGPIPE errors in the given computation.+--+-- @since 1.6.20.0+ignoreSigPipe :: IO () -> IO ()+ignoreSigPipe = C.handle $ \e -> case e of+ IOError { ioe_type = ResourceVanished+ , ioe_errno = Just ioe }+ | Errno ioe == ePIPE -> return ()+ _ -> throwIO e
+ System/Process/JavaScript.hs view
@@ -0,0 +1,308 @@+{-# LANGUAGE ForeignFunctionInterface #-}+{-# LANGUAGE JavaScriptFFI #-}+{-# LANGUAGE Trustworthy #-}+{-# LANGUAGE LambdaCase #-}+{-# LANGUAGE CPP #-}++{-+ Child process support for JavaScript running on the node.js platform.++ Other platforms such as browsers will accept the JavaScript code, but all+ operations will result in unsupported operation exceptions.+ -}++#include "HsProcessConfig.h"++module System.Process.JavaScript+ ( mkProcessHandle+ , translateInternal+ , createProcess_Internal+ , withCEnvironment+ , closePHANDLE+ , startDelegateControlC+ , endDelegateControlC+ , stopDelegateControlC+ , isDefaultSignal+ , ignoreSignal+ , defaultSignal+ , createPipeInternal+ , createPipeInternalFd+ , interruptProcessGroupOfInternal+ , getProcessId+ , getCurrentProcessId+ ) where++import Control.Concurrent.MVar+import Control.Exception (throwIO)++import Data.Char (isAlphaNum)++import System.Exit+import System.IO+import System.IO.Error+import qualified System.Posix.Internals as Posix++import Foreign.C+import Foreign.Marshal+import Foreign.Ptr++import GHC.IO.Handle.FD (mkHandleFromFD)+import GHC.IO.Device (IODeviceType(..))+import GHC.IO.Encoding (getLocaleEncoding)+import GHC.IO.Exception+import qualified GHC.IO.FD as FD++import GHC.JS.Prim++import System.Process.Common hiding (mb_delegate_ctlc, mbPipe)++mkProcessHandle :: JSVal -> Bool -> IO ProcessHandle+mkProcessHandle p mb_delegate_ctlc = do+ m <- newMVar (OpenHandle p)+ ml <- newMVar ()+ return (ProcessHandle m mb_delegate_ctlc ml)++closePHANDLE :: JSVal -> IO ()+closePHANDLE _ = return ()++getProcessId :: PHANDLE -> IO Int+getProcessId ph =+ throwErrnoIfMinus1 "getProcessId" (js_getProcessId ph)++getCurrentProcessId :: IO Int+getCurrentProcessId =+ throwErrnoIfMinus1 "getCurrentProcessId" js_getCurrentProcessId++startDelegateControlC :: IO ()+startDelegateControlC =+ throwErrnoIfMinus1_ "startDelegateControlC" js_startDelegateControlC++stopDelegateControlC :: IO ()+stopDelegateControlC =+ throwErrnoIfMinus1_ "stopDelegateControlC" js_stopDelegateControlC++endDelegateControlC :: ExitCode -> IO ()+endDelegateControlC (ExitFailure (-2)) = throwIO UserInterrupt -- SIGINT+endDelegateControlC _ = pure ()++ignoreSignal, defaultSignal :: CLong+ignoreSignal = CONST_SIG_IGN+defaultSignal = CONST_SIG_DFL++isDefaultSignal :: CLong -> Bool+isDefaultSignal = (== defaultSignal)++interruptProcessGroupOfInternal+ :: ProcessHandle -- ^ A process in the process group+ -> IO ()+interruptProcessGroupOfInternal ph =+ withProcessHandle ph $ \p_ -> do+ case p_ of+ OpenExtHandle{} -> return ()+ ClosedHandle _ -> return ()+ OpenHandle h ->+ throwErrnoIfMinus1_ "interruptProcessGroupOfInternal"+ (js_interruptProcessGroupOf h)++translateInternal :: String -> String+translateInternal "" = "''"+translateInternal str+ -- goodChar is a pessimistic predicate, such that if an argument is+ -- non-empty and only contains goodChars, then there is no need to+ -- do any quoting or escaping+ | all goodChar str = str+ | otherwise = '\'' : foldr escape "'" str+ where escape '\'' = showString "'\\''"+ escape c = showChar c+ goodChar c = isAlphaNum c || c `elem` "-_.,/"++-- node.js does not appear to have any built-in facilities+-- for creating pipes, so we leave this as an unsupported operation+-- for now+createPipeInternal :: IO (Handle, Handle)+createPipeInternal = ioError+ (ioeSetLocation unsupportedOperation "createPipeInternal")++createPipeInternalFd :: IO (Posix.FD, Posix.FD)+createPipeInternalFd = ioError+ (ioeSetLocation unsupportedOperation "createPipeInternalFd")++withCEnvironment :: [(String,String)] -> (Ptr CString -> IO a) -> IO a+withCEnvironment envir act =+ let env' = map (\(name, val) -> name ++ ('=':val)) envir+ in withMany withCString env' (\pEnv -> withArray0 nullPtr pEnv act)++commandToProcess :: CmdSpec -> IO (FilePath, [String])+commandToProcess cmd =+ case cmd of+ ShellCommand xs -> c2p (toJSString xs) jsNull+ RawCommand c args -> c2p (toJSString c) =<< toJSStrings args+ where+ c2p c as = do+ r <- throwErrnoIfJSNull "commandToProcess" (js_commandToProcess c as)+ fromJSStrings r >>= \case+ (x:xs) -> pure (x,xs)+ _ -> error "commandToProcess: empty list"++-- -----------------------------------------------------------------------------+-- JavaScript nodejs runProcess with signal handling in the child++createProcess_Internal+ :: String+ -- ^ Function name (for error messages).+ --+ -- This can be any 'String', but will typically be the name of the caller.+ -- E.g., 'spawnProcess' passes @"spawnProcess"@ here when calling+ -- 'createProcess_'.+ -> CreateProcess+ -> IO ProcRetHandles+createProcess_Internal fun CreateProcess{ cmdspec = cmdsp,+ cwd = mb_cwd,+ env = mb_env,+ std_in = mb_stdin,+ std_out = mb_stdout,+ std_err = mb_stderr,+ close_fds = mb_close_fds,+ create_group = mb_create_group,+ delegate_ctlc = mb_delegate_ctlc,+ new_session = mb_new_session,+ child_user = mb_child_user,+ child_group = mb_child_group }+ = do+ (cmd, args) <- commandToProcess cmdsp+ withFilePathException cmd $ do+ fdin <- mbFd fun fd_stdin mb_stdin+ fdout <- mbFd fun fd_stdout mb_stdout+ fderr <- mbFd fun fd_stderr mb_stderr+ env' <- maybe (pure jsNull)+ (toJSStrings . concatMap (\(x,y) -> [x,y]))+ mb_env++ let cwd' = maybe jsNull toJSString mb_cwd+ let c1 = toJSString cmd+ c2 <- case args of+ [] -> return jsNull+ _ -> toJSStrings args++ r <- throwErrnoIfJSNull fun $+ js_runInteractiveProcess c1+ c2+ cwd'+ env'+ fdin+ fdout+ fderr+ mb_close_fds+ mb_create_group+ mb_delegate_ctlc+ mb_new_session+ (maybe (-1) fromIntegral mb_child_group)+ (maybe (-1) fromIntegral mb_child_user)++ fdin_r:fdout_r:fderr_r:_ <-+ map (stdFD . fromIntegral) <$> (fromJSInts =<< getProp r "fds")++ hndStdInput <- mbPipe mb_stdin fdin_r WriteMode+ hndStdOutput <- mbPipe mb_stdout fdout_r ReadMode+ hndStdError <- mbPipe mb_stderr fderr_r ReadMode++ ph <- mkProcessHandle r mb_delegate_ctlc+ return $ ProcRetHandles { hStdInput = hndStdInput+ , hStdOutput = hndStdOutput+ , hStdError = hndStdError+ , procHandle = ph+ }++mbPipe :: StdStream -> FD.FD -> IOMode -> IO (Maybe Handle)+mbPipe CreatePipe fd mode = do+ enc <- getLocaleEncoding+ fmap Just (mkHandleFromFD fd+ Stream+ ("fd: " ++ show fd)+ mode+ False {-is_socket-}+ (Just enc))+mbPipe _ _ _ = do+ return Nothing++stdFD :: CInt -> FD.FD+stdFD fd = FD.FD { FD.fdFD = fd+ , FD.fdIsNonBlocking = 0+ }++-- -----------------------------------------------------------------------------+-- Some helpers for dealing with JavaScript values++-- JavaScript value type synonyms, for readability+type JSArray = JSVal+type JSString = JSVal++fromJSStrings :: JSVal -> IO [String]+fromJSStrings x = fmap (map fromJSString) (fromJSArray x)++fromJSInts :: JSVal -> IO [Int]+fromJSInts x = map fromJSInt <$> fromJSArray x++toJSStrings :: [String] -> IO JSVal+toJSStrings xs = toJSArray (map toJSString xs)++throwErrnoIfJSNull :: String -> IO JSVal -> IO JSVal+throwErrnoIfJSNull msg m = do+ r <- m+ if isNull r then throwErrno msg+ else return r++-- -----------------------------------------------------------------------------+-- Foreign imports from process.js++-- run an interactive process. Note that this foreign import is asynchronous+-- (interruptible) since it waits until the process has spawned (or an error+-- has occurred.+--+-- this should only be a short time, so it should be safe to call this from+-- an uninterruptible mask.++foreign import javascript interruptible "h$process_runInteractiveProcess"+ js_runInteractiveProcess+ :: JSString -- ^ command or program+ -> JSArray -- ^ arguments, null if it's a raw command+ -> JSString -- ^ working dir, null for current+ -> JSArray -- ^ environment, null for existing+ -> CInt -- ^ stdin fd+ -> CInt -- ^ stdout fd+ -> CInt -- ^ stderr fd+ -> Bool -- ^ close file descriptors in child (currently unsupported)+ -> Bool -- ^ create a new process group+ -> Bool -- ^ delegate ctrl-c+ -> Bool -- ^ create a new session+ -> Int -- ^ set child GID (-1 for unchanged)+ -> Int -- ^ set child UID (-1 for unchanged)+ -> IO JSVal -- ^ process handle (null if an error occurred)++foreign import javascript safe "h$process_commandToProcess"+ js_commandToProcess+ :: JSString+ -> JSArray+ -> IO JSArray++foreign import javascript unsafe "h$process_interruptProcessGroupOf"+ js_interruptProcessGroupOf+ :: PHANDLE+ -> IO Int++foreign import javascript unsafe "h$process_startDelegateControlC"+ js_startDelegateControlC+ :: IO Int++foreign import javascript unsafe "h$process_stopDelegateControlC"+ js_stopDelegateControlC+ :: IO Int++foreign import javascript unsafe "h$process_getCurrentProcessId"+ js_getCurrentProcessId+ :: IO Int++foreign import javascript unsafe "h$process_getProcessId"+ js_getProcessId+ :: PHANDLE+ -> IO Int
System/Process/Posix.hs view
@@ -1,5 +1,8 @@ {-# LANGUAGE BangPatterns #-} {-# LANGUAGE CPP #-}++#include <ghcplatform.h>+ module System.Process.Posix ( mkProcessHandle , translateInternal@@ -43,6 +46,10 @@ import System.Process.Common hiding (mb_delegate_ctlc) +#if defined(wasm32_HOST_ARCH)+import System.IO.Error+#endif+ #include "HsProcessConfig.h" #include "processFlags.h" @@ -129,7 +136,9 @@ maybeWith withFilePath mb_cwd $ \pWorkDir -> maybeWith with mb_child_group $ \pChildGroup -> maybeWith with mb_child_user $ \pChildUser ->- withMany withFilePath (cmd:args) $ \cstrs ->+ withFilePath cmd $ \cmdstr ->+ withMany withCString args $ \argstrs -> do+ let cstrs = cmdstr : argstrs withArray0 nullPtr cstrs $ \pargs -> do fdin <- mbFd fun fd_stdin mb_stdin@@ -262,6 +271,27 @@ where sig = fromIntegral (-n) +#if defined(wasm32_HOST_ARCH)++c_runInteractiveProcess+ :: Ptr CString+ -> CString+ -> Ptr CString+ -> FD+ -> FD+ -> FD+ -> Ptr FD+ -> Ptr FD+ -> Ptr FD+ -> Ptr CGid+ -> Ptr CUid+ -> CInt -- flags+ -> Ptr CString+ -> IO PHANDLE+c_runInteractiveProcess _ _ _ _ _ _ _ _ _ _ _ _ _ = ioError (ioeSetLocation unsupportedOperation "runInteractiveProcess")++#else+ foreign import ccall unsafe "runInteractiveProcess" c_runInteractiveProcess :: Ptr CString@@ -278,6 +308,8 @@ -> CInt -- flags -> Ptr CString -> IO PHANDLE++#endif ignoreSignal, defaultSignal :: CLong ignoreSignal = CONST_SIG_IGN
System/Process/Windows.hsc view
@@ -1,4 +1,5 @@ {-# LANGUAGE CPP, ForeignFunctionInterface #-}+{-# LANGUAGE BangPatterns #-} {-# LANGUAGE InterruptibleFFI #-} module System.Process.Windows ( mkProcessHandle@@ -17,12 +18,17 @@ , terminateJobUnsafe , waitForJobCompletion , timeout_Infinite+ , HANDLE+ , mkNamedPipe ) where import System.Process.Common import Control.Concurrent import Control.Exception+import Control.Monad import Data.Bits+import Data.Char (toLower)+import Data.List (dropWhileEnd) import Foreign.C import Foreign.Marshal import Foreign.Ptr@@ -33,8 +39,8 @@ import GHC.IO.Exception ##if defined(__IO_MANAGER_WINIO__) import GHC.IO.SubSystem-import Graphics.Win32.Misc import qualified GHC.Event.Windows as Mgr+import Graphics.Win32.Misc ##endif import GHC.IO.Handle.FD import GHC.IO.Handle.Types hiding (ClosedHandle)@@ -54,7 +60,7 @@ ##if defined(i386_HOST_ARCH) ## define WINDOWS_CCONV stdcall-##elif defined(x86_64_HOST_ARCH)+##elif defined(x86_64_HOST_ARCH) || defined(aarch64_HOST_ARCH) ## define WINDOWS_CCONV ccall ##else ## error Unknown mingw32 arch@@ -65,14 +71,14 @@ -- On Windows, we have to close this HANDLE when it is no longer required, -- hence we add a finalizer to it-mkProcessHandle :: PHANDLE -> PHANDLE -> IO ProcessHandle-mkProcessHandle h job = do+mkProcessHandle :: PHANDLE -> Bool -> PHANDLE -> IO ProcessHandle+mkProcessHandle h ignore_signals job = do m <- if job == nullPtr then newMVar (OpenHandle h) else newMVar (OpenExtHandle h job) _ <- mkWeakMVar m (processHandleFinaliser m) l <- newMVar ()- return (ProcessHandle m False l)+ return (ProcessHandle m ignore_signals l) processHandleFinaliser :: MVar ProcessHandle__ -> IO () processHandleFinaliser m =@@ -114,7 +120,6 @@ std_err = mb_stderr, close_fds = mb_close_fds, create_group = mb_create_group,- delegate_ctlc = _ignored, detach_console = mb_detach_console, create_new_console = mb_create_new_console, new_session = mb_new_session,@@ -166,7 +171,7 @@ cmdspec = cmdsp, cwd = mb_cwd, env = mb_env,- delegate_ctlc = _ignored }+ delegate_ctlc = ignore_signals } action = do let lenPtr = sizeOf (undefined :: WordPtr)@@ -183,8 +188,15 @@ (proc_handle, hndStdInput, hndStdOutput, hndStdError) <- action pfdStdInput pfdStdOutput pfdStdError hJob pEnv pWorkDir pcmdline + -- If we have successfully created the process then check if we have to+ -- detach from the console. I'm not sure why the posix version changes+ -- the state right before creating the child process, but doing so here+ -- means the first child also inherits this+ when ignore_signals $+ startDelegateControlC+ phJob <- peek hJob- ph <- mkProcessHandle proc_handle phJob+ ph <- mkProcessHandle proc_handle ignore_signals phJob return ProcRetHandles { hStdInput = hndStdInput , hStdOutput = hndStdOutput , hStdError = hndStdError@@ -203,7 +215,6 @@ std_err = mb_stderr, close_fds = mb_close_fds, create_group = mb_create_group,- delegate_ctlc = _ignored, detach_console = mb_detach_console, create_new_console = mb_create_new_console, new_session = mb_new_session,@@ -260,19 +271,72 @@ runInteractiveProcess_lock :: MVar () runInteractiveProcess_lock = unsafePerformIO $ newMVar () --- The following functions are always present in the export list. For--- compatibility with the non-Windows code, we provide the same functions with--- matching type signatures, but implemented as no-ops. For details, see:--- <https://github.com/haskell/process/pull/21>+-- ----------------------------------------------------------------------------+-- Delegated control-C handling on Windows++-- See https://learn.microsoft.com/en-us/windows/console/setconsolectrlhandler+--+-- While running an interactive console process like ghci or a shell, we want+-- to let that process handle Ctl-C keyboard interrupts how it sees fit.+-- So that means we need to ignore the CTRL_C_EVENT/CTRL_BREAK_EVENT Windows+-- events while we're running such programs.+--+-- If we run multiple programs like this concurrently then we have to be+-- careful to avoid messing up the signal handlers. We keep a count and only+-- restore when the last one has finished.+--+-- To do this we have to use SetConsoleCtrlHandler which masks the events for+-- the current process and any child it creates from that point.+--+-- In this case we can't use FreeConsole/AttachConsole since those destroy+-- the signal handler stack for the application when called. This means we'd+-- have to recreate them and process doesn't know what's there.++{-# NOINLINE runInteractiveProcess_delegate_ctlc #-}+runInteractiveProcess_delegate_ctlc :: MVar (Maybe (Int))+runInteractiveProcess_delegate_ctlc = unsafePerformIO $ newMVar Nothing+ startDelegateControlC :: IO ()-startDelegateControlC = return ()+startDelegateControlC =+ modifyMVar_ runInteractiveProcess_delegate_ctlc $ \delegating -> do+ case delegating of+ Nothing -> do+ -- We're going to ignore ^C in the parent while there are any+ -- processes using ^C delegation.+ --+ -- If another thread runs another process without using+ -- delegation while we're doing this then it will inherit the+ -- ignore ^C status.+ _ <- c_setConsoleCtrlHandler nullPtr True+ return (Just 1) -endDelegateControlC :: ExitCode -> IO ()-endDelegateControlC _ = return ()+ Just count -> do+ -- If we're already doing it, just increment the count+ let !count' = count + 1+ return (Just count') stopDelegateControlC :: IO ()-stopDelegateControlC = return ()+stopDelegateControlC =+ modifyMVar_ runInteractiveProcess_delegate_ctlc $ \delegating -> do+ case delegating of+ Just 1 -> do+ -- Last process, so restore the old signal handlers+ _ <- c_setConsoleCtrlHandler nullPtr False+ return Nothing + Just count -> do+ -- Not the last, just decrement the count+ let !count' = count - 1+ return (Just count')++ Nothing -> return Nothing -- should be impossible++endDelegateControlC :: ExitCode -> IO ()+-- I don't think there's a standard exit code for program interruptions+-- on Windows, so I'll just ignore it for now.+endDelegateControlC _ = stopDelegateControlC++ -- End no-op functions @@ -308,6 +372,12 @@ -> CUInt -> IO Bool +foreign import WINDOWS_CCONV unsafe "SetConsoleCtrlHandler"+ c_setConsoleCtrlHandler+ :: Ptr ()+ -> Bool+ -> IO Bool+ foreign import ccall interruptible "waitForJobCompletion" -- NB. safe - can block c_waitForJobCompletion :: PHANDLE@@ -359,9 +429,28 @@ -- which partly works. There seem to be some quoting issues, but -- I don't have the energy to find+fix them right now (ToDo). --SDM -- (later) Now I don't know what the above comment means. sigh.-commandToProcess (RawCommand cmd args) = do- return (cmd, translateInternal cmd ++ concatMap ((' ':) . translateInternal) args)+commandToProcess (RawCommand cmd args)+ | map toLower (takeWinExtension cmd) `elem` [".bat", ".cmd"]+ = return (cmd, translateInternal cmd ++ concatMap ((' ':) . translateCmdExeArg) args)+ | otherwise+ = return (cmd, translateInternal cmd ++ concatMap ((' ':) . translateInternal) args) +-- TODO: filepath should also be updated with 'takeWinExtension'. Perhaps+-- some day we can remove this logic from `process` but there is no hurry.++-- | Get the extension of a Windows file, removing any trailing spaces or dots+-- since they are ignored.+--+-- See: <https://learn.microsoft.com/en-us/troubleshoot/windows-client/shell-experience/file-folder-name-whitespace-characters>+--+-- >>> takeWinExtension "test.bat."+-- ".bat"+--+-- >>> takeWinExtension "test.bat ."+-- ".bat"+takeWinExtension :: FilePath -> String+takeWinExtension = takeExtension . dropWhileEnd (`elem` [' ', '.'])+ -- Find CMD.EXE (or COMMAND.COM on Win98). We use the same algorithm as -- system() in the VC++ CRT (Vc7/crt/src/system.c in a VC++ installation). findCommandInterpreter :: IO FilePath@@ -401,6 +490,31 @@ "findCommandInterpreter" Nothing Nothing) Just cmd -> return cmd +-- | Alternative regime used to escape arguments destined for scripts+-- interpreted by @cmd.exe@, (e.g. @.bat@ and @.cmd@ files).+--+-- This respects the Windows command interpreter's quoting rules:+--+-- * the entire argument should be surrounded in quotes+-- * the backslash symbol is used to escape quotes and backslashes+-- * the carat symbol is used to escape other special characters with+-- significance to the interpreter+--+-- It is particularly important that we perform this quoting as+-- unvalidated unquoted command-line arguments can be used to achieve+-- arbitrary user code execution in when passed to a vulnerable batch+-- script.+--+translateCmdExeArg :: String -> String+translateCmdExeArg xs = "^\"" ++ snd (foldr escape (True,"^\"") xs)+ where escape '"' (_, str) = (True, '\\' : '"' : str)+ escape '\\' (True, str) = (True, '\\' : '\\' : str)+ escape '\\' (False, str) = (False, '\\' : str)+ escape '%' (_, str) = (False, "%%cd:~,%" ++ str)+ escape c (_, str)+ | c `elem` "^<>|&()" = (False, '^' : c : str)+ | otherwise = (False, c : str)+ translateInternal :: String -> String translateInternal xs = '"' : snd (foldr escape (True,"\"") xs) where escape '"' (_, str) = (True, '\\' : '"' : str)@@ -448,16 +562,16 @@ createPipeInternalHANDLE = alloca $ \ pfdStdInput -> alloca $ \ pfdStdOutput -> do- throwErrnoIf_ (==False) "c_mkNamedPipe" $- c_mkNamedPipe pfdStdInput True pfdStdOutput True- Just hndStdInput <- mbPipeHANDLE CreatePipe pfdStdInput WriteMode- Just hndStdOutput <- mbPipeHANDLE CreatePipe pfdStdOutput ReadMode+ throwErrnoIf_ (==False) "mkNamedPipe" $+ mkNamedPipe pfdStdInput True False pfdStdOutput True False+ Just hndStdInput <- mbPipeHANDLE CreatePipe pfdStdInput ReadMode+ Just hndStdOutput <- mbPipeHANDLE CreatePipe pfdStdOutput WriteMode return (hndStdInput, hndStdOutput) --foreign import ccall "mkNamedPipe" c_mkNamedPipe ::- Ptr HANDLE -> Bool -> Ptr HANDLE -> Bool -> IO Bool ##endif++foreign import ccall "mkNamedPipe" mkNamedPipe ::+ Ptr HANDLE -> Bool -> Bool -> Ptr HANDLE -> Bool -> Bool -> IO Bool close' :: CInt -> IO () close' = throwErrnoIfMinus1_ "_close" . c__close
aclocal.m4 view
@@ -8,7 +8,7 @@ # is supported in autoconf versions 2.50 up to the actual 2.57, so there is # little risk. AC_DEFUN([FP_COMPUTE_INT],-[_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl+[AC_COMPUTE_INT([$2],[$1],[$3],[$4])[]dnl ])# FP_COMPUTE_INT @@ -31,8 +31,7 @@ # --------------------------------------- # autoheader helper for FP_CHECK_CONSTS m4_define([FP_CHECK_CONSTS_TEMPLATE],-[AC_FOREACH([fp_Const], [$1],- [AH_TEMPLATE(AS_TR_CPP(CONST_[]fp_Const),+[m4_foreach_w([fp_Const],[$1],[AH_TEMPLATE(AS_TR_CPP(CONST_[]fp_Const), [The value of ]fp_Const[.])])[]dnl ])# FP_CHECK_CONSTS_TEMPLATE
cbits/posix/common.h view
@@ -25,11 +25,12 @@ int get_max_fd(void); // defined in find_executable.c-#if !defined(HAVE_execvpe)-char *find_executable(char *filename);+#if !defined(HAVE_EXECVPE)+char *find_executable(char *workingDirectory, char *filename); #endif // defined in fork_exec.c+#if defined(HAVE_FORK) ProcHandle do_spawn_fork (char *const args[], char *workingDirectory, char **environment,@@ -39,6 +40,7 @@ gid_t *childGroup, uid_t *childUser, int flags, char **failed_doing);+#endif // defined in posix_spawn.c ProcHandle
cbits/posix/find_executable.c view
@@ -12,21 +12,53 @@ #include "common.h" // the below is only necessary when we need to emulate execvpe.-#if !defined(HAVE_execvpe)+#if !defined(HAVE_EXECVPE) -/* Return true if the given file exists and is an executable. */-static bool is_executable(const char *path) {- return access(path, X_OK) == 0;+/* A quick check for whether the given path is absolute. */+static bool is_absolute(const char *path) {+ return path[0] == '/'; } +static char *concat_paths(const char *path1, const char *path2) {+ if (is_absolute(path2)) {+ return strdup(path2);+ } else {+ int len = strlen(path1) + 1 + strlen(path2) + 1;+ char *tmp = malloc(len);+ int ret = snprintf(tmp, len, "%s/%s", path1, path2);+ if (ret < 0) {+ free(tmp);+ return NULL;+ }+ return tmp;+ }+}++/* Return true if the given file exists and is an executable, optionally+ * relative to the given working directory.+ */+static bool is_executable(char *working_dir, const char *path) {+ if (working_dir && !is_absolute(path)) {+ char *tmp = concat_paths(working_dir, path);+ bool ret = access(tmp, X_OK) == 0;+ free(tmp);+ return ret;+ } else {+ return access(path, X_OK) == 0;+ }+}+ /* Find an executable with the given filename in the given search path. The * result must be freed by the caller. Returns NULL if a matching file is not * found. */-static char *find_in_search_path(char *search_path, const char *filename) {+static char *find_in_search_path(char *working_dir, char *search_path, const char *filename) { const int filename_len = strlen(filename); char *tokbuf; char *path = strtok_r(search_path, ":", &tokbuf);+ if (!working_dir)+ working_dir = ".";+ int workdir_len = strlen(working_dir); while (path != NULL) { // N.B. gcc 6.3.0, used by Debian 9, inexplicably warns that `path` // may not be initialised with -Wall. Silence this warning. See #210.@@ -34,13 +66,21 @@ #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wmaybe-uninitialized" #endif- const int tmp_len = filename_len + 1 + strlen(path) + 1;+ char *tmp;+ if (is_absolute(path)) {+ const int tmp_len = strlen(path) + 1 + filename_len + 1;+ tmp = malloc(tmp_len);+ snprintf(tmp, tmp_len, "%s/%s", path, filename);+ } else {+ const int tmp_len = workdir_len + 1 + strlen(path) + 1 + filename_len + 1;+ tmp = malloc(tmp_len);+ snprintf(tmp, tmp_len, "%s/%s/%s", working_dir, path, filename);+ } #if defined(__GNUC__) && __GNUC__ == 6 && __GNUC_MINOR__ == 3 #pragma GCC diagnostic pop #endif- char *tmp = malloc(tmp_len);- snprintf(tmp, tmp_len, "%s/%s", path, filename);- if (is_executable(tmp)) {++ if (is_executable(working_dir, tmp)) { return tmp; } else { free(tmp);@@ -74,15 +114,36 @@ return strdup(":"); } -/* Find the given executable in the executable search path. */-char *find_executable(char *filename) {- /* If it's an absolute or relative path name, it's easy. */- if (strchr(filename, '/') && is_executable(filename)) {+/* Find the given executable in the executable search path relative to+ * workingDirectory (or the current directory, if NULL).+ * N.B. the caller is responsible for free()ing the result.+ */+char *find_executable(char *working_dir, char *filename) {+ /* Drop trailing slash from working directory if necessary */+ if (working_dir) {+ int workdir_len = strlen(working_dir);+ if (working_dir[workdir_len-1] == '/') {+ working_dir[workdir_len-1] = '\0';+ }+ }++ if (is_absolute(filename)) {+ /* If it's an absolute path name, it's easy. */ return filename;++ } else if (strchr(filename, '/')) {+ /* If it's a relative path name, we must look for executables relative+ * to the working directory. */+ if (is_executable(working_dir, filename)) {+ return filename;+ } } + /* Otherwise look through the search path... */ char *search_path = get_executable_search_path();- return find_in_search_path(search_path, filename);+ char *result = find_in_search_path(working_dir, search_path, filename);+ free(search_path);+ return result; } #endif
cbits/posix/fork_exec.c view
@@ -1,5 +1,15 @@+/* Ensure that execvpe and pipe2 are provided if possible */+#define _GNU_SOURCE 1++/* Ensure getpwuid_r(3) is available on Solaris. */+#if defined(__sun)+#define _POSIX_PTHREAD_SEMANTICS+#endif+ #include "common.h" +#if defined(HAVE_FORK)+ #include <sys/types.h> #include <sys/wait.h> #include <errno.h>@@ -19,18 +29,9 @@ #include <signal.h> #endif -#if defined(HAVE_VFORK_H)-#include <vfork.h>-#endif- #include <Rts.h> -#if defined(HAVE_WORKING_VFORK)-#define myfork vfork-#elif defined(HAVE_WORKING_FORK)-#define myfork fork-// We don't need a fork command on Windows-#else+#if !defined(HAVE_WORKING_FORK) #error Cannot find a working fork command #endif @@ -60,14 +61,19 @@ { switch (b->behavior) { case STD_HANDLE_CLOSE:- if (close(fd) == -1) {+ if (close(fd) == -1 && errno != EBADF) { child_failed(pipe, "close"); } return 0; case STD_HANDLE_USE_FD:- if (dup2(b->use_fd, fd) == -1) {- child_failed(pipe, "dup2");+ // N.B. POSIX specifies that dup2(x,x) should be a no-op, but+ // naturally Apple ignores this and rather fails in posix_spawn on Big+ // Sur.+ if (b->use_fd != fd) {+ if (dup2(b->use_fd, fd) == -1) {+ child_failed(pipe, "dup2");+ } } return 0; @@ -92,6 +98,28 @@ } } +/* This will `dup` the given fd such that it does not fall in the range of+ * stdin/stdout/stderr, if necessary. The new handle will have O_CLOEXEC.+ *+ * This is necessary as we must ensure that the fork communications pipe does+ * not inhabit fds 0 through 2 since we will need to manipulate these fds in+ * setup_std_handle_fork while keeping the pipe available so that it can report+ * errors. See #266.+ */+int unshadow_pipe_fd(int fd, char **failed_doing) {+ if (fd > 2) {+ return fd;+ }++ int new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);+ if (new_fd == -1) {+ *failed_doing = "fcntl(F_DUP_FD)";+ return -1;+ }+ close(fd);+ return new_fd;+}+ /* Try spawning with fork. */ ProcHandle do_spawn_fork (char *const args[],@@ -104,12 +132,44 @@ char **failed_doing) { int forkCommunicationFds[2];- int r = pipe(forkCommunicationFds);+ int r;++#if defined(HAVE_PIPE2)+ r = pipe2(forkCommunicationFds, O_CLOEXEC);+#else+ r = pipe(forkCommunicationFds);+#endif if (r == -1) { *failed_doing = "pipe"; return -1; } + // Ensure that the pipe fds don't shadow stdin/stdout/stderr+ forkCommunicationFds[0] = unshadow_pipe_fd(forkCommunicationFds[0], failed_doing);+ if (forkCommunicationFds[0] == -1) {+ return -1;+ }+ forkCommunicationFds[1] = unshadow_pipe_fd(forkCommunicationFds[1], failed_doing);+ if (forkCommunicationFds[1] == -1) {+ return -1;+ }++ // N.B. execvpe is not supposed on some platforms. In this case+ // we emulate this using fork and exec. However, to safely do so+ // we need to perform all allocations *prior* to forking. Consequently, we+ // need to find_executable before forking.+#if !defined(HAVE_EXECVPE)+ char *exec_path;+ if (environment) {+ exec_path = find_executable(workingDirectory, args[0]);+ if (exec_path == NULL) {+ errno = -ENOENT;+ *failed_doing = "find_executable";+ return -1;+ }+ }+#endif+ // Block signals with Haskell handlers. The danger here is that // with the threaded RTS, a signal arrives in the child process, // the RTS writes the signal information into the pipe (which is@@ -121,18 +181,7 @@ // signal and keeps restarting indefinitely. stopTimer(); - // N.B. execvpe is not supposed on some platforms. In this case- // we emulate this using fork and exec. However, to safely do so- // we need to perform all allocations *prior* to forking. Consequently, we- // need to find_executable before forking.-#if !defined(HAVE_execvpe)- char *exec_path;- if (environment) {- exec_path = find_executable(args[0]);- }-#endif-- int pid = myfork();+ int pid = fork(); switch(pid) { case -1:@@ -144,10 +193,6 @@ return -1; case 0:- // WARNING! We may now be in the child of vfork(), and any- // memory we modify below may also be seen in the parent- // process.- close(forkCommunicationFds[0]); fcntl(forkCommunicationFds[1], F_SETFD, FD_CLOEXEC); @@ -234,20 +279,21 @@ /* the child */ if (environment) {-#if defined(HAVE_execvpe)+#if defined(HAVE_EXECVPE) // XXX Check result execvpe(args[0], args, environment);+ child_failed(forkCommunicationFds[1], "execvpe"); #else // XXX Check result execve(exec_path, args, environment);+ child_failed(forkCommunicationFds[1], "execve"); #endif } else { // XXX Check result execvp(args[0], args);+ child_failed(forkCommunicationFds[1], "execvp"); } - child_failed(forkCommunicationFds[1], "exec");- default: if ((flags & RUN_PROCESS_IN_NEW_GROUP) != 0) { setpgid(pid, pid);@@ -289,16 +335,8 @@ // our responsibility to reap here as nobody else can. waitpid(pid, NULL, 0); - // Already closed child ends above- if (stdInHdl->behavior == STD_HANDLE_USE_PIPE) {- close(stdInHdl->use_pipe.parent_end);- }- if (stdOutHdl->behavior == STD_HANDLE_USE_PIPE) {- close(stdOutHdl->use_pipe.parent_end);- }- if (stdErrHdl->behavior == STD_HANDLE_USE_PIPE) {- close(stdErrHdl->use_pipe.parent_end);- }+ // No need to close stdin, et al. here as runInteractiveProcess will+ // handle this. See #306. pid = -1; }@@ -314,3 +352,5 @@ return pid; }++#endif // HAVE_FORK
cbits/posix/posix_spawn.c view
@@ -1,11 +1,19 @@+// Necessary for POSIX_SPAWN_SETSID and posix_spawn_file_actions_addchdir_np under glibc.+// Moreover this needs to appear before any glibc headers.+#define _GNU_SOURCE+ #include "runProcess.h" #include "common.h" #include <unistd.h> #include <errno.h>++#if defined(HAVE_SIGNAL_H) #include <signal.h>+#include <fcntl.h>+#endif -#if !defined(HAVE_POSIX_SPAWNP)+#if !defined(USE_POSIX_SPAWN) ProcHandle do_spawn_posix (char *const args[], char *workingDirectory, char **environment,@@ -21,8 +29,6 @@ #else -// Necessary for POSIX_SPAWN_SETSID under glibc.-#define _GNU_SOURCE #include <spawn.h> extern char **environ;@@ -35,6 +41,14 @@ { switch (hdl->behavior) { case STD_HANDLE_CLOSE:+ // N.B. POSIX specifies that addclose() may result in spawnp() failing+ // if the fd to-be-closed is already closed. Consequently, we must+ // first open a file (e.g. /dev/null) and before attempting to close+ // the fd. Fixes #251.+ if (posix_spawn_file_actions_addopen(fa, fd, "/dev/null", O_RDONLY, 0) != 0) {+ *failed_doing = "posix_spawn_file_actions_addopen";+ return -1;+ } if (posix_spawn_file_actions_addclose(fa, fd) != 0) { *failed_doing = "posix_spawn_file_actions_addclose"; return -1;@@ -42,10 +56,15 @@ return 0; case STD_HANDLE_USE_FD:- if (posix_spawn_file_actions_adddup2(fa, hdl->use_fd, fd) != 0) {- *failed_doing = "posix_spawn_file_actions_adddup2";- return -1;- }+ // N.B. POSIX specifies that dup2(x,x) should be a no-op, but+ // naturally Apple ignores this and rather fails in posix_spawn on Big+ // Sur.+ if (hdl->use_fd != fd) {+ if (posix_spawn_file_actions_adddup2(fa, hdl->use_fd, fd) != 0) {+ *failed_doing = "posix_spawn_file_actions_adddup2";+ return -1;+ }+ } return 0; case STD_HANDLE_USE_PIPE:@@ -118,14 +137,35 @@ } if (workingDirectory) {-#if defined(HAVE_posix_spawn_file_actions_addchdir_np)- // N.B. this function is broken on macOS.- // See https://github.com/rust-lang/rust/pull/80537.+#if defined(HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR)+#if defined(HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP)+ // N.B. in certain toolchain versions, apple will act as if symbols exist+ // because the toolchain can be *used* for targets that have them.+ // At runtime, however, they will be NULL. So, if both symbols are+ // available, first check if the _np version *should* be available,+ // if it is, add a runtime check whether the non-_np version is NULL+ // and fallback to the _np version if it is+ // See also: https://github.com/haskell/process/issues/356+ if (posix_spawn_file_actions_addchdir == NULL) {+ r = posix_spawn_file_actions_addchdir_np(&fa, workingDirectory);+ } else {+ r = posix_spawn_file_actions_addchdir(&fa, workingDirectory);+ }+#else r = posix_spawn_file_actions_addchdir(&fa, workingDirectory);+#endif if (r != 0) { *failed_doing = "posix_spawn_file_actions_addchdir"; goto fail; }+#elif defined(HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP)+ // N.B. this function is broken on macOS.+ // See https://github.com/rust-lang/rust/pull/80537.+ r = posix_spawn_file_actions_addchdir_np(&fa, workingDirectory);+ if (r != 0) {+ *failed_doing = "posix_spawn_file_actions_addchdir_np";+ goto fail;+ } #else goto not_supported; #endif@@ -154,7 +194,7 @@ #if defined(HAVE_POSIX_SPAWN_SETPGROUP) spawn_flags |= POSIX_SPAWN_SETPGROUP; #else- goto not_supported;+ goto not_supported; #endif } @@ -196,6 +236,7 @@ r = posix_spawnp(&pid, args[0], &fa, &sa, args, environment ? environment : environ); if (r != 0) {+ errno = r; // posix_spawn doesn't necessarily set errno; see #227. *failed_doing = "posix_spawnp"; goto fail; } else {
cbits/posix/runProcess.c view
@@ -5,6 +5,11 @@ ------------------------------------------------------------------------- */ #include "runProcess.h"++// Callers are stubbed out on wasm32: runInteractiveProcess (System/Process/Posix.hs),+// terminateProcess, getProcessExitCode, waitForProcess (System/Process.hs).+#if !defined(wasm32_HOST_ARCH)+ #include "common.h" #include <unistd.h>@@ -68,6 +73,7 @@ return r; } +#if defined(HAVE_FORK) r = do_spawn_fork(args, workingDirectory, environment, stdInHdl, stdOutHdl, stdErrHdl,@@ -75,6 +81,11 @@ flags, failed_doing); return r;+#else+ *failed_doing = "fork";+ return -1;+#endif+ } enum pipe_direction {@@ -265,3 +276,5 @@ return -1; }++#endif // !wasm32_HOST_ARCH
cbits/win32/runProcess.c view
@@ -88,8 +88,8 @@ * asynchronously while anonymous pipes require blocking calls. */ BOOL-mkNamedPipe (HANDLE* pHandleIn, BOOL isInheritableIn,- HANDLE* pHandleOut, BOOL isInheritableOut)+mkNamedPipe (HANDLE* pHandleIn, BOOL isInheritableIn, BOOL isOverlappedIn,+ HANDLE* pHandleOut, BOOL isInheritableOut, BOOL isOverlappedOut) { HANDLE hTemporaryIn = INVALID_HANDLE_VALUE; HANDLE hTemporaryOut = INVALID_HANDLE_VALUE;@@ -123,31 +123,64 @@ /* Create one end of the pipe. Named pipes are a bit less secure than anonymous pipes. Because of this we restrict the pipe's access to only one client and also only the local host. This means after we create the- other end of the pipe it should be as secure as an anonymous pipe. */+ other end of the pipe it should be as secure as an anonymous pipe.++ "When you operate on named pipes, you have a choice of opening them in+ PIPE_WAIT mode or PIPE_NOWAIT mode. When you read from a PIPE_WAIT pipe,+ the read blocks until data becomes available in the pipe. When you read+ from a PIPE_NOWAIT pipe, then the read completes immediately even if+ there is no data in the pipe. But how is this different from a PIPE_WAIT+ pipe opened in asynchronous mode by passing FILE_FLAG_OVERLAPPED? The+ difference is in when the I/O is deemed to have completed. When you issue+ an overlapped read against a PIPE_WAIT pipe, the call to ReadFile returns+ immediately, but the completion actions do not occur until there is data+ available in the pipe. (Completion actions are things like setting the+ event, running the completion routine, or queueing a completion to an I/O+ completion port.) On the other hand, when you issue a read against a+ PIPE_NOWAIT pipe, the call to ReadFile returns immediately with+ completion—if the pipe is empty, the read completes with a read of zero+ bytes and the error ERROR_NO_DATA."[0]++ [0] https://devblogs.microsoft.com/oldnewthing/20110114-00/?p=11753 */+ DWORD inAttr = isOverlappedIn ? FILE_FLAG_OVERLAPPED : 0; hTemporaryIn- = CreateNamedPipeW (&pipeName[0],- PIPE_ACCESS_INBOUND | FILE_FLAG_OVERLAPPED | FILE_FLAG_FIRST_PIPE_INSTANCE,- PIPE_TYPE_MESSAGE | PIPE_REJECT_REMOTE_CLIENTS,+ = CreateNamedPipeW (pipeName,+ PIPE_ACCESS_INBOUND | inAttr | FILE_FLAG_FIRST_PIPE_INSTANCE,+ PIPE_TYPE_MESSAGE | PIPE_REJECT_REMOTE_CLIENTS | PIPE_READMODE_MESSAGE | PIPE_WAIT, 1, buffer_size, buffer_size, 0, &secAttr); if (hTemporaryIn == INVALID_HANDLE_VALUE) goto fail; - /* And now create the other end using the inverse access permissions. This+ /* And now open the other end, using the inverse access permissions. This will give us the read and write ends of the pipe. */ secAttr.bInheritHandle = isInheritableOut; hTemporaryOut- = CreateFileW (&pipeName[0],+ = CreateFileW (pipeName, GENERIC_WRITE, FILE_SHARE_WRITE, &secAttr, OPEN_EXISTING,- FILE_FLAG_OVERLAPPED,+ isOverlappedOut+ ? FILE_FLAG_OVERLAPPED+ : FILE_ATTRIBUTE_NORMAL, NULL);+ if (hTemporaryOut == INVALID_HANDLE_VALUE) goto fail; + /* Ensure that read and write ends are set to the same mode. MESSAGE mode+ will honor data boundaries as a whole. That is, if n bytes are posted+ at once, n bytes are received together at the other wide as long as n+ is smaller than buffer size. Otherwise it's up to buffer size. BYTE+ mode is essentially streaming mode. Typically Haskell would benefit from+ both modes, cabal from byte streaming and iserv from message. Let's+ default to MESSAGE. */+ DWORD pipeFlags = PIPE_READMODE_MESSAGE;+ if (!SetNamedPipeHandleState (hTemporaryOut, &pipeFlags, NULL, NULL))+ goto fail;+ /* Set some optimization flags to make the I/O manager operate more efficiently on these handles. These mirrors those in `optimizeFileAccess` but we set them here to do so before any data has@@ -211,21 +244,21 @@ static inline bool setStdHandleInfo (LPHANDLE destination, HANDLE _stdhandle, LPHANDLE hStdRead, LPHANDLE hStdWrite, HANDLE defaultStd,- BOOL isInhertibleIn, BOOL isInhertibleOut, BOOL asynchronous)+ BOOL isInheritableIn, BOOL isInheritableOut, BOOL asynchronous) { BOOL status; assert (destination); assert (hStdRead); assert (hStdWrite); - LPHANDLE tmpHandle = isInhertibleOut ? hStdWrite : hStdRead;+ LPHANDLE tmpHandle = isInheritableOut ? hStdWrite : hStdRead; if (_stdhandle == (HANDLE)-1) { if (!asynchronous- && !mkAnonPipe(hStdRead, isInhertibleIn, hStdWrite, isInhertibleOut))+ && !mkAnonPipe(hStdRead, isInheritableIn, hStdWrite, isInheritableOut)) return false; if (asynchronous- && !mkNamedPipe(hStdRead, isInhertibleIn, hStdWrite, isInhertibleOut))+ && !mkNamedPipe(hStdRead, isInheritableIn, !isInheritableIn, hStdWrite, isInheritableOut, !isInheritableOut)) return false; *destination = *tmpHandle; } else if (_stdhandle == (HANDLE)-2) {@@ -584,7 +617,22 @@ return true; } - HANDLE pHwnd = OpenProcess(SYNCHRONIZE, TRUE, pid_list->ProcessIdList[0]);+ HANDLE pHwnd;+ bool found_p;++ /* Find the first non-terminated handle. */+ for (DWORD i = 0; i < pid_list->NumberOfProcessIdsInList; i++) {+ pHwnd = OpenProcess(SYNCHRONIZE, FALSE, pid_list->ProcessIdList[i]);+ int code = 0;+ found_p = pHwnd && getProcessExitCode (pHwnd, &code) != -1 && code != STILL_ACTIVE;+ if (found_p)+ break;+ }++ /* All processes were terminated already. */+ if (!found_p)+ return true;+ if (pHwnd == NULL) { switch (GetLastError()) { case ERROR_INVALID_PARAMETER:@@ -599,7 +647,13 @@ } // Wait for it to finish...- if (WaitForSingleObject(pHwnd, INFINITE) != WAIT_OBJECT_0) {+ DWORD result = WaitForSingleObject(pHwnd, 200);+ if (result == WAIT_TIMEOUT) {+ int code = 0;+ /* Current process is waiting to terminate. skip. */+ if (getProcessExitCode (pHwnd, &code) != -1 && code != STILL_ACTIVE)+ continue ;+ } else if (result != WAIT_OBJECT_0) { free(pid_list); maperrno(); CloseHandle(pHwnd);
changelog.md view
@@ -1,5 +1,125 @@ # Changelog for [`process` package](http://hackage.haskell.org/package/process) +## 1.6.30.0 *June 2026*++* darwin: Allow posix_spawn_file_actions_addchdir to be missing when+ linking against process ([#377](https://github.com/haskell/process/pull/377))++## 1.6.29.0 *May 2026*++* Stub out `runProcess.c` on wasm32 ([#366](https://github.com/haskell/process/pull/366))+* Fix segmentation faults on MacOS 15 caused by NULL symbols created by toolchains that can compile for MacOS 26 ([#363](https://github.com/haskell/process/pull/363))++## 1.6.28.0 *April 2026*++* Add `callCreateProcess`+* Improve Haddock++## 1.6.27.0 *March 2026*++* Support being configured without fork+* Fix `@since` annotations++## 1.6.26.1 *May 2025*++* Regenerate `configure` script (#343)++## 1.6.26.0 *April 2025*++* Add `System.Process.Environment.OsString`.+* Bumps `base >= 4.12.0.0` (GHC 8.6+), `filepath >= 1.4.100.0`,+ `unix >= 2.8.0.0`, and `Win32 >= 2.14.1.0`.+* Drops support for GHC < 8.6.++## 1.6.25.0 *September 2024*++* Fix build with Javascript backend ([#327](https://github.com/haskell/process/issues/327))++## 1.6.24.0 *September 2024*++* Fix detection of `posix_spawn_file_actions_addchdir[_np]` ([#303](https://github.com/haskell/process/issues/303))++## 1.6.23.0 *September 2024*++* Fix command-line escaping logic on Windows when the command file ends with+ a space or a dot. This is a follow-up for+ [HSEC-2024-0003](https://github.com/haskell/security-advisories/tree/main/advisories/hackage/process/HSEC-2024-0003.md).+* Migitate another manifestation of the BatBadBut vulnerability via+ unescaped `%` expansions. This is another follow-up for+ [HSEC-2024-0003](https://github.com/haskell/security-advisories/tree/main/advisories/hackage/process/HSEC-2024-0003.md).+ ([#313](https://github.com/haskell/process/issues/313))++## 1.6.22.0 *August 2024*++* Allow NUL to appear in arguments under POSIX. See+ https://github.com/haskell/process/pull/320. Thanks to @mmhat.++## 1.6.21.0 *July 2024*++* No longer attach finalizers to `Handle`s created by the+ `System.Process.CommunicationHandle` API. Instead, all file descriptors are+ manually closed by the API.++ This fixes a bug in which a file descriptor could be closed multiple times.++## 1.6.20.0 *April 2024*++* Introduce `System.Process.CommunicationHandle`, allowing for platform-independent+ inter-process communication using `Handle`s.+* Expose `withForkWait` and `ignoreSigPipe` from `System.Process.Internals`.+* Define new internal functions `rawFdToHandle` and (Windows only) `rawHANDLEToHandle`,+ exported from `System.Process.Common`.++## 1.6.19.0 *April 2024*++* Adjust command-line escaping logic on Windows to ensure that occurrences of+ characters with special significance to the Windows batch interpreter are+ properly escaped in arguments passed to `.bat` and `.cmd` processes.+ This addresses+ [HSEC-2024-0003](https://github.com/haskell/security-advisories/tree/main/advisories/hackage/process/HSEC-2024-0003.md).+* Fix double-closing of stdin/stdout/stderr fds with POSIX `fork/exec` backend.+ [#306](https://github.com/haskell/process/issues/306)+* Add support for `posix_spawn_file_actions_addchdir_np`++## 1.6.18.0 *September 2023*++* Fix deadlock when waiting for process completion and process jobs [#273](https://github.com/haskell/process/issues/273)+* Support `delegate_ctlc` on Windows. [#278](https://github.com/haskell/process/pull/278)+* Drop support for `vfork` [#261](https://github.com/haskell/process/pull/261)+* Javascript backend support+* Fix potential segmentation fault on macOS [#295](https://github.com/haskell/process/pull/295)++## 1.6.17.0 *February 2023*++* Improved documentation for the `OpenExtHandle` constructor.++## 1.6.16.0 *October 2022*++* `posix_spawn`: Don't rely on addclose not failing for closed fds [#251](https://github.com/haskell/process/issues/251)+* Support unix 2.8 [#258](https://github.com/haskell/process/issues/258)++## 1.6.15.0 *August 2022*++* Correct permissions on createPipe on Windows [234](https://github.com/haskell/process/pull/234)+* Ensure that both ends of pipes on Windows are created in the same mode [234](https://github.com/haskell/process/pull/234)+* Fixed an issue with WINIO where giving an application an inherited pipe can cause it to misbehave [245](https://github.com/haskell/process/pull/245)+* Set the encoding on WINIO created pipes to the local encoding as with MIO [248](https://github.com/haskell/process/pull/248)+* cbits/fork-exec: Don't dup2 identical fds [#250](https://github.com/haskell/process/pull/250)++## 1.6.14.0 *February 2022*++* posix: Ensure that `errno` is set after `posix_spawnp` fails [#228](https://github.com/haskell/process/pull/228)+* Fix `waitForProcess` not closing process handles with `delegate_ctlc` [#231](https://github.com/haskell/process/pull/231)+* Don't use `posix_spawn` on platforms where it does not report `ENOENT` in caes where the+ requested executable does not exist [#224](https://github.com/haskell/process/issues/224)+* Ensure that `find_executable` correctly-locates executables when a change in+ working directory is requested [#219](https://github.com/haskell/process/issues/219)+* Fix capitalization error allowing `execvpe` to be used when available.++## 1.6.13.2 *July 2021*++* `posix_spawn`: Don't attempt to `dup2` identical fds [#214](https://github.com/haskell/process/pull/214)+ ## 1.6.13.1 *July 2021* * Patches for the previous release
configure view
@@ -1,4953 +1,5213 @@ #! /bin/sh # Guess values for system-dependent variables and create Makefiles.-# Generated by GNU Autoconf 2.69 for Haskell process package 1.0.-#-# Report bugs to <libraries@haskell.org>.-#-#-# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.-#-#-# This configure script is free software; the Free Software Foundation-# gives unlimited permission to copy, distribute and modify it.-## -------------------- ##-## M4sh Initialization. ##-## -------------------- ##--# Be more Bourne compatible-DUALCASE=1; export DUALCASE # for MKS sh-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :- emulate sh- NULLCMD=:- # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which- # is contrary to our usage. Disable this feature.- alias -g '${1+"$@"}'='"$@"'- setopt NO_GLOB_SUBST-else- case `(set -o) 2>/dev/null` in #(- *posix*) :- set -o posix ;; #(- *) :- ;;-esac-fi---as_nl='-'-export as_nl-# Printing a long string crashes Solaris 7 /usr/bin/printf.-as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo-# Prefer a ksh shell builtin over an external printf program on Solaris,-# but without wasting forks for bash or zsh.-if test -z "$BASH_VERSION$ZSH_VERSION" \- && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then- as_echo='print -r --'- as_echo_n='print -rn --'-elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then- as_echo='printf %s\n'- as_echo_n='printf %s'-else- if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then- as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'- as_echo_n='/usr/ucb/echo -n'- else- as_echo_body='eval expr "X$1" : "X\\(.*\\)"'- as_echo_n_body='eval- arg=$1;- case $arg in #(- *"$as_nl"*)- expr "X$arg" : "X\\(.*\\)$as_nl";- arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;- esac;- expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"- '- export as_echo_n_body- as_echo_n='sh -c $as_echo_n_body as_echo'- fi- export as_echo_body- as_echo='sh -c $as_echo_body as_echo'-fi--# The user is always right.-if test "${PATH_SEPARATOR+set}" != set; then- PATH_SEPARATOR=:- (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {- (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||- PATH_SEPARATOR=';'- }-fi---# IFS-# We need space, tab and new line, in precisely that order. Quoting is-# there to prevent editors from complaining about space-tab.-# (If _AS_PATH_WALK were called with IFS unset, it would disable word-# splitting by setting IFS to empty value.)-IFS=" "" $as_nl"--# Find who we are. Look in the path if we contain no directory separator.-as_myself=-case $0 in #((- *[\\/]* ) as_myself=$0 ;;- *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR-for as_dir in $PATH-do- IFS=$as_save_IFS- test -z "$as_dir" && as_dir=.- test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break- done-IFS=$as_save_IFS-- ;;-esac-# We did not find ourselves, most probably we were run as `sh COMMAND'-# in which case we are not to be found in the path.-if test "x$as_myself" = x; then- as_myself=$0-fi-if test ! -f "$as_myself"; then- $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2- exit 1-fi--# Unset variables that we do not need and which cause bugs (e.g. in-# pre-3.0 UWIN ksh). 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" >&6; }+if eval test \${$3+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`+ eval ac_save_FLAGS=\$$6+ as_fn_append $6 " $5"+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+#ifndef $as_decl_name+#ifdef __cplusplus+ (void) $as_decl_use;+#else+ (void) $as_decl_name;+#endif+#endif++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ eval "$3=yes"+else $as_nop+ eval "$3=no"+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+ eval $6=\$ac_save_FLAGS++fi+eval ac_res=\$$3+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5+printf "%s\n" "$ac_res" >&6; }+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno++} # ac_fn_check_decl++# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES+# --------------------------------------------+# Tries to find the compile-time value of EXPR in a program that includes+# INCLUDES, setting VAR accordingly. Returns whether the value could be+# computed+ac_fn_c_compute_int ()+{+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack+ if test "$cross_compiling" = yes; then+ # Depending upon the size, compute the lo and hi bounds.+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+static int test_array [1 - 2 * !(($2) >= 0)];+test_array [0] = 0;+return test_array [0];++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_lo=0 ac_mid=0+ while :; do+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+static int test_array [1 - 2 * !(($2) <= $ac_mid)];+test_array [0] = 0;+return test_array [0];++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_hi=$ac_mid; break+else $as_nop+ as_fn_arith $ac_mid + 1 && ac_lo=$as_val+ if test $ac_lo -le $ac_mid; then+ ac_lo= ac_hi=+ break+ fi+ as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+ done+else $as_nop+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+static int test_array [1 - 2 * !(($2) < 0)];+test_array [0] = 0;+return test_array [0];++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_hi=-1 ac_mid=-1+ while :; do+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+static int test_array [1 - 2 * !(($2) >= $ac_mid)];+test_array [0] = 0;+return test_array [0];++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_lo=$ac_mid; break+else $as_nop+ as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val+ if test $ac_mid -le $ac_hi; then+ ac_lo= ac_hi=+ break+ fi+ as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+ done+else $as_nop+ ac_lo= ac_hi=+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+# Binary search between lo and hi bounds.+while test "x$ac_lo" != "x$ac_hi"; do+ as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+static int test_array [1 - 2 * !(($2) <= $ac_mid)];+test_array [0] = 0;+return test_array [0];++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_hi=$ac_mid+else $as_nop+ as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+done+case $ac_lo in #((+?*) eval "$3=\$ac_lo"; ac_retval=0 ;;+'') ac_retval=1 ;;+esac+ else+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+static long int longval (void) { return $2; }+static unsigned long int ulongval (void) { return $2; }+#include <stdio.h>+#include <stdlib.h>+int+main (void)+{++ FILE *f = fopen ("conftest.val", "w");+ if (! f)+ return 1;+ if (($2) < 0)+ {+ long int i = longval ();+ if (i != ($2))+ return 1;+ fprintf (f, "%ld", i);+ }+ else+ {+ unsigned long int i = ulongval ();+ if (i != ($2))+ return 1;+ fprintf (f, "%lu", i);+ }+ /* Do not output a trailing newline, as this causes \r\n confusion+ on some platforms. */+ return ferror (f) || fclose (f) != 0;++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_run "$LINENO"+then :+ echo >>conftest.val; read $3 <conftest.val; ac_retval=0+else $as_nop+ ac_retval=1+fi+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \+ conftest.$ac_objext conftest.beam conftest.$ac_ext+rm -f conftest.val++ fi+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno+ as_fn_set_status $ac_retval++} # ac_fn_c_compute_int+ac_configure_args_raw=+for ac_arg+do+ case $ac_arg in+ *\'*)+ ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;+ esac+ as_fn_append ac_configure_args_raw " '$ac_arg'"+done++case $ac_configure_args_raw in+ *$as_nl*)+ ac_safe_unquote= ;;+ *)+ ac_unsafe_z='|&;<>()$`\\"*?[ '' ' # This string ends in space, tab.+ ac_unsafe_a="$ac_unsafe_z#~"+ ac_safe_unquote="s/ '\\([^$ac_unsafe_a][^$ac_unsafe_z]*\\)'/ \\1/g"+ ac_configure_args_raw=` printf "%s\n" "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;;+esac++cat >config.log <<_ACEOF+This file contains any messages produced by compilers while+running configure, to aid debugging if configure makes a mistake.++It was created by Haskell process package $as_me 1.0, which was+generated by GNU Autoconf 2.71. Invocation command line was++ $ $0$ac_configure_args_raw++_ACEOF+exec 5>>config.log+{+cat <<_ASUNAME+## --------- ##+## Platform. ##+## --------- ##++hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`+uname -m = `(uname -m) 2>/dev/null || echo unknown`+uname -r = `(uname -r) 2>/dev/null || echo unknown`+uname -s = `(uname -s) 2>/dev/null || echo unknown`+uname -v = `(uname -v) 2>/dev/null || echo unknown`++/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`+/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown`++/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown`+/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown`+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`+/usr/bin/hostinfo = `(/usr/bin/hostinfo) 2>/dev/null || echo unknown`+/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown`+/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown`+/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown`++_ASUNAME++as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ printf "%s\n" "PATH: $as_dir"+ done+IFS=$as_save_IFS++} >&5++cat >&5 <<_ACEOF+++## ----------- ##+## Core tests. ##+## ----------- ##++_ACEOF+++# Keep a trace of the command line.+# Strip out --no-create and --no-recursion so they do not pile up.+# Strip out --silent because we don't want to record it for future runs.+# Also quote any args containing shell meta-characters.+# Make two passes to allow for proper duplicate-argument suppression.+ac_configure_args=+ac_configure_args0=+ac_configure_args1=+ac_must_keep_next=false+for ac_pass in 1 2+do+ for ac_arg+ do+ case $ac_arg in+ -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \+ | -silent | --silent | --silen | --sile | --sil)+ continue ;;+ *\'*)+ ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;+ esac+ case $ac_pass in+ 1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;+ 2)+ as_fn_append ac_configure_args1 " '$ac_arg'"+ if test $ac_must_keep_next = true; then+ ac_must_keep_next=false # Got value, back to normal.+ else+ case $ac_arg in+ *=* | --config-cache | -C | -disable-* | --disable-* \+ | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \+ | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \+ | -with-* | --with-* | -without-* | --without-* | --x)+ case "$ac_configure_args0 " in+ "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;+ esac+ ;;+ -* ) ac_must_keep_next=true ;;+ esac+ fi+ as_fn_append ac_configure_args " '$ac_arg'"+ ;;+ esac+ done+done+{ ac_configure_args0=; unset ac_configure_args0;}+{ ac_configure_args1=; unset ac_configure_args1;}++# When interrupted or exit'd, cleanup temporary files, and complete+# config.log. We remove comments because anyway the quotes in there+# would cause problems or look ugly.+# WARNING: Use '\'' to represent an apostrophe within the trap.+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.+trap 'exit_status=$?+ # Sanitize IFS.+ IFS=" "" $as_nl"+ # Save into config.log some information that might help in debugging.+ {+ echo++ printf "%s\n" "## ---------------- ##+## Cache variables. ##+## ---------------- ##"+ echo+ # The following way of writing the cache mishandles newlines in values,+(+ for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do+ eval ac_val=\$$ac_var+ case $ac_val in #(+ *${as_nl}*)+ case $ac_var in #(+ *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;+ esac+ case $ac_var in #(+ _ | IFS | as_nl) ;; #(+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(+ *) { eval $ac_var=; unset $ac_var;} ;;+ esac ;;+ esac+ done+ (set) 2>&1 |+ case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(+ *${as_nl}ac_space=\ *)+ sed -n \+ "s/'\''/'\''\\\\'\'''\''/g;+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"+ ;; #(+ *)+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"+ ;;+ esac |+ sort+)+ echo++ printf "%s\n" "## ----------------- ##+## Output variables. ##+## ----------------- ##"+ echo+ for ac_var in $ac_subst_vars+ do+ eval ac_val=\$$ac_var+ case $ac_val in+ *\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;+ esac+ printf "%s\n" "$ac_var='\''$ac_val'\''"+ done | sort+ echo++ if test -n "$ac_subst_files"; then+ printf "%s\n" "## ------------------- ##+## File substitutions. ##+## ------------------- ##"+ echo+ for ac_var in $ac_subst_files+ do+ eval ac_val=\$$ac_var+ case $ac_val in+ *\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;+ esac+ printf "%s\n" "$ac_var='\''$ac_val'\''"+ done | sort+ echo+ fi++ if test -s confdefs.h; then+ printf "%s\n" "## ----------- ##+## confdefs.h. ##+## ----------- ##"+ echo+ cat confdefs.h+ echo+ fi+ test "$ac_signal" != 0 &&+ printf "%s\n" "$as_me: caught signal $ac_signal"+ printf "%s\n" "$as_me: exit $exit_status"+ } >&5+ rm -f core *.core core.conftest.* &&+ rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&+ exit $exit_status+' 0+for ac_signal in 1 2 13 15; do+ trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal+done+ac_signal=0++# confdefs.h avoids OS command line length limits that DEFS can exceed.+rm -f -r conftest* confdefs.h++printf "%s\n" "/* confdefs.h */" > confdefs.h++# Predefined preprocessor variables.++printf "%s\n" "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h+++# Let the site file select an alternate cache file if it wants to.+# Prefer an explicitly selected file to automatically selected ones.+if test -n "$CONFIG_SITE"; then+ ac_site_files="$CONFIG_SITE"+elif test "x$prefix" != xNONE; then+ ac_site_files="$prefix/share/config.site $prefix/etc/config.site"+else+ ac_site_files="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"+fi++for ac_site_file in $ac_site_files+do+ case $ac_site_file in #(+ */*) :+ ;; #(+ *) :+ ac_site_file=./$ac_site_file ;;+esac+ if test -f "$ac_site_file" && test -r "$ac_site_file"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5+printf "%s\n" "$as_me: loading site script $ac_site_file" >&6;}+ sed 's/^/| /' "$ac_site_file" >&5+ . "$ac_site_file" \+ || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? "failed to load site script $ac_site_file+See \`config.log' for more details" "$LINENO" 5; }+ fi+done++if test -r "$cache_file"; then+ # Some versions of bash will fail to source /dev/null (special files+ # actually), so we avoid doing that. DJGPP emulates it as a regular file.+ if test /dev/null != "$cache_file" && test -f "$cache_file"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5+printf "%s\n" "$as_me: loading cache $cache_file" >&6;}+ case $cache_file in+ [\\/]* | ?:[\\/]* ) . "$cache_file";;+ *) . "./$cache_file";;+ esac+ fi+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5+printf "%s\n" "$as_me: creating cache $cache_file" >&6;}+ >$cache_file+fi++# Test code for whether the C compiler supports C89 (global declarations)+ac_c_conftest_c89_globals='+/* Does the compiler advertise C89 conformance?+ Do not test the value of __STDC__, because some compilers set it to 0+ while being otherwise adequately conformant. */+#if !defined __STDC__+# error "Compiler does not advertise C89 conformance"+#endif++#include <stddef.h>+#include <stdarg.h>+struct stat;+/* Most of the following tests are stolen from RCS 5.7 src/conf.sh. */+struct buf { int x; };+struct buf * (*rcsopen) (struct buf *, struct stat *, int);+static char *e (p, i)+ char **p;+ int i;+{+ return p[i];+}+static char *f (char * (*g) (char **, int), char **p, ...)+{+ char *s;+ va_list v;+ va_start (v,p);+ s = g (p, va_arg (v,int));+ va_end (v);+ return s;+}++/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has+ function prototypes and stuff, but not \xHH hex character constants.+ These do not provoke an error unfortunately, instead are silently treated+ as an "x". The following induces an error, until -std is added to get+ proper ANSI mode. Curiously \x00 != x always comes out true, for an+ array size at least. It is necessary to write \x00 == 0 to get something+ that is true only with -std. */+int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1];++/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters+ inside strings and character constants. */+#define FOO(x) '\''x'\''+int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1];++int test (int i, double x);+struct s1 {int (*f) (int a);};+struct s2 {int (*f) (double a);};+int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int),+ int, int);'++# Test code for whether the C compiler supports C89 (body of main).+ac_c_conftest_c89_main='+ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]);+'++# Test code for whether the C compiler supports C99 (global declarations)+ac_c_conftest_c99_globals='+// Does the compiler advertise C99 conformance?+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L+# error "Compiler does not advertise C99 conformance"+#endif++#include <stdbool.h>+extern int puts (const char *);+extern int printf (const char *, ...);+extern int dprintf (int, const char *, ...);+extern void *malloc (size_t);++// Check varargs macros. These examples are taken from C99 6.10.3.5.+// dprintf is used instead of fprintf to avoid needing to declare+// FILE and stderr.+#define debug(...) dprintf (2, __VA_ARGS__)+#define showlist(...) puts (#__VA_ARGS__)+#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))+static void+test_varargs_macros (void)+{+ int x = 1234;+ int y = 5678;+ debug ("Flag");+ debug ("X = %d\n", x);+ showlist (The first, second, and third items.);+ report (x>y, "x is %d but y is %d", x, y);+}++// Check long long types.+#define BIG64 18446744073709551615ull+#define BIG32 4294967295ul+#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)+#if !BIG_OK+ #error "your preprocessor is broken"+#endif+#if BIG_OK+#else+ #error "your preprocessor is broken"+#endif+static long long int bignum = -9223372036854775807LL;+static unsigned long long int ubignum = BIG64;++struct incomplete_array+{+ int datasize;+ double data[];+};++struct named_init {+ int number;+ const wchar_t *name;+ double average;+};++typedef const char *ccp;++static inline int+test_restrict (ccp restrict text)+{+ // See if C++-style comments work.+ // Iterate through items via the restricted pointer.+ // Also check for declarations in for loops.+ for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i)+ continue;+ return 0;+}++// Check varargs and va_copy.+static bool+test_varargs (const char *format, ...)+{+ va_list args;+ va_start (args, format);+ va_list args_copy;+ va_copy (args_copy, args);++ const char *str = "";+ int number = 0;+ float fnumber = 0;++ while (*format)+ {+ switch (*format++)+ {+ case '\''s'\'': // string+ str = va_arg (args_copy, const char *);+ break;+ case '\''d'\'': // int+ number = va_arg (args_copy, int);+ break;+ case '\''f'\'': // float+ fnumber = va_arg (args_copy, double);+ break;+ default:+ break;+ }+ }+ va_end (args_copy);+ va_end (args);++ return *str && number && fnumber;+}+'++# Test code for whether the C compiler supports C99 (body of main).+ac_c_conftest_c99_main='+ // Check bool.+ _Bool success = false;+ success |= (argc != 0);++ // Check restrict.+ if (test_restrict ("String literal") == 0)+ success = true;+ char *restrict newvar = "Another string";++ // Check varargs.+ success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234);+ test_varargs_macros ();++ // Check flexible array members.+ struct incomplete_array *ia =+ malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));+ ia->datasize = 10;+ for (int i = 0; i < ia->datasize; ++i)+ ia->data[i] = i * 1.234;++ // Check named initializers.+ struct named_init ni = {+ .number = 34,+ .name = L"Test wide string",+ .average = 543.34343,+ };++ ni.number = 58;++ int dynamic_array[ni.number];+ dynamic_array[0] = argv[0][0];+ dynamic_array[ni.number - 1] = 543;++ // work around unused variable warnings+ ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''+ || dynamic_array[ni.number - 1] != 543);+'++# Test code for whether the C compiler supports C11 (global declarations)+ac_c_conftest_c11_globals='+// Does the compiler advertise C11 conformance?+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L+# error "Compiler does not advertise C11 conformance"+#endif++// Check _Alignas.+char _Alignas (double) aligned_as_double;+char _Alignas (0) no_special_alignment;+extern char aligned_as_int;+char _Alignas (0) _Alignas (int) aligned_as_int;++// Check _Alignof.+enum+{+ int_alignment = _Alignof (int),+ int_array_alignment = _Alignof (int[100]),+ char_alignment = _Alignof (char)+};+_Static_assert (0 < -_Alignof (int), "_Alignof is signed");++// Check _Noreturn.+int _Noreturn does_not_return (void) { for (;;) continue; }++// Check _Static_assert.+struct test_static_assert+{+ int x;+ _Static_assert (sizeof (int) <= sizeof (long int),+ "_Static_assert does not work in struct");+ long int y;+};++// Check UTF-8 literals.+#define u8 syntax error!+char const utf8_literal[] = u8"happens to be ASCII" "another string";++// Check duplicate typedefs.+typedef long *long_ptr;+typedef long int *long_ptr;+typedef long_ptr long_ptr;++// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1.+struct anonymous+{+ union {+ struct { int i; int j; };+ struct { int k; long int l; } w;+ };+ int m;+} v1;+'++# Test code for whether the C compiler supports C11 (body of main).+ac_c_conftest_c11_main='+ _Static_assert ((offsetof (struct anonymous, i)+ == offsetof (struct anonymous, w.k)),+ "Anonymous union alignment botch");+ v1.i = 2;+ v1.w.k = 5;+ ok |= v1.i != 5;+'++# Test code for whether the C compiler supports C11 (complete).+ac_c_conftest_c11_program="${ac_c_conftest_c89_globals}+${ac_c_conftest_c99_globals}+${ac_c_conftest_c11_globals}++int+main (int argc, char **argv)+{+ int ok = 0;+ ${ac_c_conftest_c89_main}+ ${ac_c_conftest_c99_main}+ ${ac_c_conftest_c11_main}+ return ok;+}+"++# Test code for whether the C compiler supports C99 (complete).+ac_c_conftest_c99_program="${ac_c_conftest_c89_globals}+${ac_c_conftest_c99_globals}++int+main (int argc, char **argv)+{+ int ok = 0;+ ${ac_c_conftest_c89_main}+ ${ac_c_conftest_c99_main}+ return ok;+}+"++# Test code for whether the C compiler supports C89 (complete).+ac_c_conftest_c89_program="${ac_c_conftest_c89_globals}++int+main (int argc, char **argv)+{+ int ok = 0;+ ${ac_c_conftest_c89_main}+ return ok;+}+"++as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H"+as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H"+as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H"+as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H"+as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H"+as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H"+as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H"+as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H"+as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H"+as_fn_append ac_header_c_list " vfork.h vfork_h HAVE_VFORK_H"+as_fn_append ac_func_c_list " fork HAVE_FORK"+as_fn_append ac_func_c_list " vfork HAVE_VFORK"+# Check that the precious variables saved in the cache have kept the same+# value.+ac_cache_corrupted=false+for ac_var in $ac_precious_vars; do+ eval ac_old_set=\$ac_cv_env_${ac_var}_set+ eval ac_new_set=\$ac_env_${ac_var}_set+ eval ac_old_val=\$ac_cv_env_${ac_var}_value+ eval ac_new_val=\$ac_env_${ac_var}_value+ case $ac_old_set,$ac_new_set in+ set,)+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5+printf "%s\n" "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}+ ac_cache_corrupted=: ;;+ ,set)+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5+printf "%s\n" "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}+ ac_cache_corrupted=: ;;+ ,);;+ *)+ if test "x$ac_old_val" != "x$ac_new_val"; then+ # differences in whitespace do not lead to failure.+ ac_old_val_w=`echo x $ac_old_val`+ ac_new_val_w=`echo x $ac_new_val`+ if test "$ac_old_val_w" != "$ac_new_val_w"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5+printf "%s\n" "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}+ ac_cache_corrupted=:+ else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5+printf "%s\n" "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}+ eval $ac_var=\$ac_old_val+ fi+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: former value: \`$ac_old_val'" >&5+printf "%s\n" "$as_me: former value: \`$ac_old_val'" >&2;}+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: current value: \`$ac_new_val'" >&5+printf "%s\n" "$as_me: current value: \`$ac_new_val'" >&2;}+ fi;;+ esac+ # Pass precious variables to config.status.+ if test "$ac_new_set" = set; then+ case $ac_new_val in+ *\'*) ac_arg=$ac_var=`printf "%s\n" "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;+ *) ac_arg=$ac_var=$ac_new_val ;;+ esac+ case " $ac_configure_args " in+ *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy.+ *) as_fn_append ac_configure_args " '$ac_arg'" ;;+ esac+ fi+done+if $ac_cache_corrupted; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5+printf "%s\n" "$as_me: error: changes in the environment can compromise the build" >&2;}+ as_fn_error $? "run \`${MAKE-make} distclean' and/or \`rm $cache_file'+ and start over" "$LINENO" 5+fi+## -------------------- ##+## Main body of script. ##+## -------------------- ##++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu++++# Safety check: Ensure that we are in the correct source directory.+++ac_config_headers="$ac_config_headers include/HsProcessConfig.h"++++++++++++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu+if test -n "$ac_tool_prefix"; then+ # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.+set dummy ${ac_tool_prefix}gcc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="${ac_tool_prefix}gcc"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++fi+if test -z "$ac_cv_prog_CC"; then+ ac_ct_CC=$CC+ # Extract the first word of "gcc", so it can be a program name with args.+set dummy gcc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$ac_ct_CC"; then+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_ac_ct_CC="gcc"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf "%s\n" "$ac_ct_CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi++ if test "x$ac_ct_CC" = x; then+ CC=""+ else+ case $cross_compiling:$ac_tool_warned in+yes:)+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+ CC=$ac_ct_CC+ fi+else+ CC="$ac_cv_prog_CC"+fi++if test -z "$CC"; then+ if test -n "$ac_tool_prefix"; then+ # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.+set dummy ${ac_tool_prefix}cc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="${ac_tool_prefix}cc"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++ fi+fi+if test -z "$CC"; then+ # Extract the first word of "cc", so it can be a program name with args.+set dummy cc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+ ac_prog_rejected=no+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ if test "$as_dir$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then+ ac_prog_rejected=yes+ continue+ fi+ ac_cv_prog_CC="cc"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++if test $ac_prog_rejected = yes; then+ # We found a bogon in the path, so make sure we never use it.+ set dummy $ac_cv_prog_CC+ shift+ if test $# != 0; then+ # We chose a different compiler from the bogus one.+ # However, it has the same basename, so the bogon will be chosen+ # first if we set CC to just the basename; use the full file name.+ shift+ ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@"+ fi+fi+fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++fi+if test -z "$CC"; then+ if test -n "$ac_tool_prefix"; then+ for ac_prog in cl.exe+ do+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.+set dummy $ac_tool_prefix$ac_prog; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="$ac_tool_prefix$ac_prog"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++ test -n "$CC" && break+ done+fi+if test -z "$CC"; then+ ac_ct_CC=$CC+ for ac_prog in cl.exe+do+ # Extract the first word of "$ac_prog", so it can be a program name with args.+set dummy $ac_prog; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$ac_ct_CC"; then+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_ac_ct_CC="$ac_prog"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf "%s\n" "$ac_ct_CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++ test -n "$ac_ct_CC" && break+done++ if test "x$ac_ct_CC" = x; then+ CC=""+ else+ case $cross_compiling:$ac_tool_warned in+yes:)+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+ CC=$ac_ct_CC+ fi+fi++fi+if test -z "$CC"; then+ if test -n "$ac_tool_prefix"; then+ # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args.+set dummy ${ac_tool_prefix}clang; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="${ac_tool_prefix}clang"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++fi+if test -z "$ac_cv_prog_CC"; then+ ac_ct_CC=$CC+ # Extract the first word of "clang", so it can be a program name with args.+set dummy clang; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test -n "$ac_ct_CC"; then+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_ac_ct_CC="clang"+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf "%s\n" "$ac_ct_CC" >&6; }+else+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi++ if test "x$ac_ct_CC" = x; then+ CC=""+ else+ case $cross_compiling:$ac_tool_warned in+yes:)+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+ CC=$ac_ct_CC+ fi+else+ CC="$ac_cv_prog_CC"+fi++fi+++test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? 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For instance with Cygwin, `ls conftest' will+# work properly (i.e., refer to `conftest.exe'), while it won't with+# `rm'.+for ac_file in conftest.exe conftest conftest.*; do+ test -f "$ac_file" || continue+ case $ac_file in+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;+ *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`+ break;;+ * ) break;;+ esac+done+else $as_nop+ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? 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" >&6; }+if test ${ac_cv_prog_cc_c11+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ ac_cv_prog_cc_c11=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_c_conftest_c11_program+_ACEOF+for ac_arg in '' -std=gnu11+do+ CC="$ac_save_CC $ac_arg"+ if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_prog_cc_c11=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+ test "x$ac_cv_prog_cc_c11" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC+fi++if test "x$ac_cv_prog_cc_c11" = xno+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf "%s\n" "unsupported" >&6; }+else $as_nop+ if test "x$ac_cv_prog_cc_c11" = x+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf "%s\n" "none needed" >&6; }+else $as_nop+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5+printf "%s\n" "$ac_cv_prog_cc_c11" >&6; }+ CC="$CC $ac_cv_prog_cc_c11"+fi+ ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11+ ac_prog_cc_stdc=c11+fi+fi+if test x$ac_prog_cc_stdc = xno+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5+printf %s "checking for $CC option to enable C99 features... " >&6; }+if test ${ac_cv_prog_cc_c99+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ ac_cv_prog_cc_c99=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_c_conftest_c99_program+_ACEOF+for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99=+do+ CC="$ac_save_CC $ac_arg"+ if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_prog_cc_c99=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+ test "x$ac_cv_prog_cc_c99" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC+fi++if test "x$ac_cv_prog_cc_c99" = xno+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf "%s\n" "unsupported" >&6; }+else $as_nop+ if test "x$ac_cv_prog_cc_c99" = x+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf "%s\n" "none needed" >&6; }+else $as_nop+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5+printf "%s\n" "$ac_cv_prog_cc_c99" >&6; }+ CC="$CC $ac_cv_prog_cc_c99"+fi+ ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99+ ac_prog_cc_stdc=c99+fi+fi+if test x$ac_prog_cc_stdc = xno+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5+printf %s "checking for $CC option to enable C89 features... " >&6; }+if test ${ac_cv_prog_cc_c89+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ ac_cv_prog_cc_c89=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_c_conftest_c89_program+_ACEOF+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"+do+ CC="$ac_save_CC $ac_arg"+ if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_prog_cc_c89=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+ test "x$ac_cv_prog_cc_c89" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC+fi++if test "x$ac_cv_prog_cc_c89" = xno+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf "%s\n" "unsupported" >&6; }+else $as_nop+ if test "x$ac_cv_prog_cc_c89" = x+then :+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf "%s\n" "none needed" >&6; }+else $as_nop+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5+printf "%s\n" "$ac_cv_prog_cc_c89" >&6; }+ CC="$CC $ac_cv_prog_cc_c89"+fi+ ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89+ ac_prog_cc_stdc=c89+fi+fi++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu++++ac_header= ac_cache=+for ac_item in $ac_header_c_list+do+ if test $ac_cache; then+ ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"+ if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then+ printf "%s\n" "#define $ac_item 1" >> confdefs.h+ fi+ ac_header= ac_cache=+ elif test $ac_header; then+ ac_cache=$ac_item+ else+ ac_header=$ac_item+ fi+done+++++++++if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes+then :++printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h++fi++ ac_fn_c_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default+"+if test "x$ac_cv_type_pid_t" = xyes+then :++else $as_nop+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */++ #if defined _WIN64 && !defined __CYGWIN__+ LLP64+ #endif++int+main (void)+{++ ;+ return 0;+}++_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_pid_type='int'+else $as_nop+ ac_pid_type='__int64'+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext++printf "%s\n" "#define pid_t $ac_pid_type" >>confdefs.h+++fi++++ac_func=+for ac_item in $ac_func_c_list+do+ if test $ac_func; then+ ac_fn_c_check_func "$LINENO" $ac_func ac_cv_func_$ac_func+ if eval test \"x\$ac_cv_func_$ac_func\" = xyes; then+ echo "#define $ac_item 1" >> confdefs.h+ fi+ ac_func=+ else+ ac_func=$ac_item+ fi+done++++if test "x$ac_cv_func_fork" = xyes; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working fork" >&5+printf %s "checking for working fork... " >&6; }+if test ${ac_cv_func_fork_works+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test "$cross_compiling" = yes+then :+ ac_cv_func_fork_works=cross+else $as_nop+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_includes_default+int+main (void)+{++ /* By Ruediger Kuhlmann. */+ return fork () < 0;++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_run "$LINENO"+then :+ ac_cv_func_fork_works=yes+else $as_nop+ ac_cv_func_fork_works=no+fi+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \+ conftest.$ac_objext conftest.beam conftest.$ac_ext+fi++fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fork_works" >&5+printf "%s\n" "$ac_cv_func_fork_works" >&6; }++else+ ac_cv_func_fork_works=$ac_cv_func_fork+fi+if test "x$ac_cv_func_fork_works" = xcross; then+ case $host in+ *-*-amigaos* | *-*-msdosdjgpp*)+ # Override, as these systems have only a dummy fork() stub+ ac_cv_func_fork_works=no+ ;;+ *)+ ac_cv_func_fork_works=yes+ ;;+ esac+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: result $ac_cv_func_fork_works guessed because of cross compilation" >&5+printf "%s\n" "$as_me: WARNING: result $ac_cv_func_fork_works guessed because of cross compilation" >&2;}+fi+ac_cv_func_vfork_works=$ac_cv_func_vfork+if test "x$ac_cv_func_vfork" = xyes; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working vfork" >&5+printf %s "checking for working vfork... " >&6; }+if test ${ac_cv_func_vfork_works+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if test "$cross_compiling" = yes+then :+ ac_cv_func_vfork_works=cross+else $as_nop+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+/* Thanks to Paul Eggert for this test. */+$ac_includes_default+#include <signal.h>+#include <sys/wait.h>+#ifdef HAVE_VFORK_H+# include <vfork.h>+#endif++static void+do_nothing (int sig)+{+ (void) sig;+}++/* On some sparc systems, changes by the child to local and incoming+ argument registers are propagated back to the parent. The compiler+ is told about this with #include <vfork.h>, but some compilers+ (e.g. gcc -O) don't grok <vfork.h>. Test for this by using a+ static variable whose address is put into a register that is+ clobbered by the vfork. */+static void+sparc_address_test (int arg)+{+ static pid_t child;+ if (!child) {+ child = vfork ();+ if (child < 0) {+ perror ("vfork");+ _exit(2);+ }+ if (!child) {+ arg = getpid();+ write(-1, "", 0);+ _exit (arg);+ }+ }+}++int+main (void)+{+ pid_t parent = getpid ();+ pid_t child;++ sparc_address_test (0);++ /* On Solaris 2.4, changes by the child to the signal handler+ also munge signal handlers in the parent. To detect this,+ start by putting the parent's handler in a known state. */+ signal (SIGTERM, SIG_DFL);++ child = vfork ();++ if (child == 0) {+ /* Here is another test for sparc vfork register problems. This+ test uses lots of local variables, at least as many local+ variables as main has allocated so far including compiler+ temporaries. 4 locals are enough for gcc 1.40.3 on a Solaris+ 4.1.3 sparc, but we use 8 to be safe. A buggy compiler should+ reuse the register of parent for one of the local variables,+ since it will think that parent can't possibly be used any more+ in this routine. Assigning to the local variable will thus+ munge parent in the parent process. */+ pid_t+ p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),+ p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();+ /* Convince the compiler that p..p7 are live; otherwise, it might+ use the same hardware register for all 8 local variables. */+ if (p != p1 || p != p2 || p != p3 || p != p4+ || p != p5 || p != p6 || p != p7)+ _exit(1);++ /* Alter the child's signal handler. */+ if (signal (SIGTERM, do_nothing) != SIG_DFL)+ _exit(1);++ /* On some systems (e.g. IRIX 3.3), vfork doesn't separate parent+ from child file descriptors. If the child closes a descriptor+ before it execs or exits, this munges the parent's descriptor+ as well. Test for this by closing stdout in the child. */+ _exit(close(fileno(stdout)) != 0);+ } else {+ int status;+ struct stat st;++ while (wait(&status) != child)+ ;+ return (+ /* Was there some problem with vforking? */+ child < 0++ /* Did the child munge the parent's signal handler? */+ || signal (SIGTERM, SIG_DFL) != SIG_DFL++ /* Did the child fail? (This shouldn't happen.) */+ || status++ /* Did the vfork/compiler bug occur? */+ || parent != getpid()++ /* Did the file descriptor bug occur? */+ || fstat(fileno(stdout), &st) != 0+ );+ }+}+_ACEOF+if ac_fn_c_try_run "$LINENO"+then :+ ac_cv_func_vfork_works=yes+else $as_nop+ ac_cv_func_vfork_works=no+fi+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \+ conftest.$ac_objext conftest.beam conftest.$ac_ext+fi++fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_vfork_works" >&5+printf "%s\n" "$ac_cv_func_vfork_works" >&6; }++fi;+if test "x$ac_cv_func_fork_works" = xcross; then+ ac_cv_func_vfork_works=$ac_cv_func_vfork+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: result $ac_cv_func_vfork_works guessed because of cross compilation" >&5+printf "%s\n" "$as_me: WARNING: result $ac_cv_func_vfork_works guessed because of cross compilation" >&2;}+fi++if test "x$ac_cv_func_vfork_works" = xyes; then++printf "%s\n" "#define HAVE_WORKING_VFORK 1" >>confdefs.h++else++printf "%s\n" "#define vfork fork" >>confdefs.h++fi+if test "x$ac_cv_func_fork_works" = xyes; then++printf "%s\n" "#define HAVE_WORKING_FORK 1" >>confdefs.h++fi+++# check for specific header (.h) files that we are interested in+ac_fn_c_check_header_compile "$LINENO" "signal.h" "ac_cv_header_signal_h" "$ac_includes_default"+if test "x$ac_cv_header_signal_h" = xyes+then :+ printf "%s\n" "#define HAVE_SIGNAL_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "sys/wait.h" "ac_cv_header_sys_wait_h" "$ac_includes_default"+if test "x$ac_cv_header_sys_wait_h" = xyes+then :+ printf "%s\n" "#define HAVE_SYS_WAIT_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "fcntl.h" "ac_cv_header_fcntl_h" "$ac_includes_default"+if test "x$ac_cv_header_fcntl_h" = xyes+then :+ printf "%s\n" "#define HAVE_FCNTL_H 1" >>confdefs.h++fi+++ac_fn_c_check_func "$LINENO" "setitimer" "ac_cv_func_setitimer"+if test "x$ac_cv_func_setitimer" = xyes+then :+ printf "%s\n" "#define HAVE_SETITIMER 1" >>confdefs.h++fi+ac_fn_c_check_func "$LINENO" "sysconf" "ac_cv_func_sysconf"+if test "x$ac_cv_func_sysconf" = xyes+then :+ printf "%s\n" "#define HAVE_SYSCONF 1" >>confdefs.h++fi++ac_fn_c_check_func "$LINENO" "execvpe" "ac_cv_func_execvpe"+if test "x$ac_cv_func_execvpe" = xyes+then :+ printf "%s\n" "#define HAVE_EXECVPE 1" >>confdefs.h++fi++ac_fn_c_check_func "$LINENO" "pipe2" "ac_cv_func_pipe2"+if test "x$ac_cv_func_pipe2" = xyes+then :+ printf "%s\n" "#define HAVE_PIPE2 1" >>confdefs.h++fi+++# posix_spawn checks+ac_fn_c_check_header_compile "$LINENO" "spawn.h" "ac_cv_header_spawn_h" "$ac_includes_default"+if test "x$ac_cv_header_spawn_h" = xyes+then :+ printf "%s\n" "#define HAVE_SPAWN_H 1" >>confdefs.h++fi++ac_fn_c_check_func "$LINENO" "posix_spawnp" "ac_cv_func_posix_spawnp"+if test "x$ac_cv_func_posix_spawnp" = xyes+then :+ printf "%s\n" "#define HAVE_POSIX_SPAWNP 1" >>confdefs.h++fi+ac_fn_c_check_func "$LINENO" "posix_spawn_file_actions_addchdir_np" "ac_cv_func_posix_spawn_file_actions_addchdir_np"+if test "x$ac_cv_func_posix_spawn_file_actions_addchdir_np" = xyes+then :+ printf "%s\n" "#define HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP 1" >>confdefs.h++fi+ac_fn_c_check_func "$LINENO" "posix_spawn_file_actions_addchdir" "ac_cv_func_posix_spawn_file_actions_addchdir"+if test "x$ac_cv_func_posix_spawn_file_actions_addchdir" = xyes+then :+ printf "%s\n" "#define HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR 1" >>confdefs.h++fi++{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC options needed to detect all undeclared functions" >&5+printf %s "checking for $CC options needed to detect all undeclared functions... " >&6; }+if test ${ac_cv_c_undeclared_builtin_options+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ ac_save_CFLAGS=$CFLAGS+ ac_cv_c_undeclared_builtin_options='cannot detect'+ for ac_arg in '' -fno-builtin; do+ CFLAGS="$ac_save_CFLAGS $ac_arg"+ # This test program should *not* compile successfully.+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */++int+main (void)+{+(void) strchr;+ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :++else $as_nop+ # This test program should compile successfully.+ # No library function is consistently available on+ # freestanding implementations, so test against a dummy+ # declaration. Include always-available headers on the+ # off chance that they somehow elicit warnings.+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+#include <float.h>+#include <limits.h>+#include <stdarg.h>+#include <stddef.h>+extern void ac_decl (int, char *);++int+main (void)+{+(void) ac_decl (0, (char *) 0);+ (void) ac_decl;++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ if test x"$ac_arg" = x+then :+ ac_cv_c_undeclared_builtin_options='none needed'+else $as_nop+ ac_cv_c_undeclared_builtin_options=$ac_arg+fi+ break+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+ done+ CFLAGS=$ac_save_CFLAGS++fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_undeclared_builtin_options" >&5+printf "%s\n" "$ac_cv_c_undeclared_builtin_options" >&6; }+ case $ac_cv_c_undeclared_builtin_options in #(+ 'cannot detect') :+ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? "cannot make $CC report undeclared builtins+See \`config.log' for more details" "$LINENO" 5; } ;; #(+ 'none needed') :+ ac_c_undeclared_builtin_options='' ;; #(+ *) :+ ac_c_undeclared_builtin_options=$ac_cv_c_undeclared_builtin_options ;;+esac++ac_fn_check_decl "$LINENO" "POSIX_SPAWN_SETSID" "ac_cv_have_decl_POSIX_SPAWN_SETSID" "+ #define _GNU_SOURCE+ #include <spawn.h>++" "$ac_c_undeclared_builtin_options" "CFLAGS"+if test "x$ac_cv_have_decl_POSIX_SPAWN_SETSID" = xyes+then :+ ac_have_decl=1+else $as_nop+ ac_have_decl=0+fi+printf "%s\n" "#define HAVE_DECL_POSIX_SPAWN_SETSID $ac_have_decl" >>confdefs.h+ac_fn_check_decl "$LINENO" "POSIX_SPAWN_SETSID_NP" "ac_cv_have_decl_POSIX_SPAWN_SETSID_NP" "+ #define _GNU_SOURCE+ #include <spawn.h>++" "$ac_c_undeclared_builtin_options" "CFLAGS"+if test "x$ac_cv_have_decl_POSIX_SPAWN_SETSID_NP" = xyes+then :+ ac_have_decl=1+else $as_nop+ ac_have_decl=0+fi+printf "%s\n" "#define HAVE_DECL_POSIX_SPAWN_SETSID_NP $ac_have_decl" >>confdefs.h++ac_fn_check_decl "$LINENO" "POSIX_SPAWN_SETPGROUP" "ac_cv_have_decl_POSIX_SPAWN_SETPGROUP" "+ #define _GNU_SOURCE+ #include <spawn.h>++" "$ac_c_undeclared_builtin_options" "CFLAGS"+if test "x$ac_cv_have_decl_POSIX_SPAWN_SETPGROUP" = xyes+then :+ ac_have_decl=1+else $as_nop+ ac_have_decl=0+fi+printf "%s\n" "#define HAVE_DECL_POSIX_SPAWN_SETPGROUP $ac_have_decl" >>confdefs.h+++if test "$ac_cv_func_posix_spawnp" = "yes"; then++ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether posix_spawn reports errors sensibly" >&5+printf %s "checking whether posix_spawn reports errors sensibly... " >&6; }+ if test "$cross_compiling" = yes+then :+ printf "%s\n" "#define USE_POSIX_SPAWN /**/" >>confdefs.h++ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: cross-compiling - assuming yes" >&5+printf "%s\n" "cross-compiling - assuming yes" >&6; }++else $as_nop+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */++ #include <stddef.h>+ #include <stdbool.h>+ #include <errno.h>+ #include <spawn.h>++int+main (void)+{++ pid_t pid;+ char *prog = "__nonexistent_program__";+ char *args[] = {prog, NULL};+ char *env[] = {NULL};++ // This should fail with ENOENT+ int ret = posix_spawnp(&pid, prog, NULL, NULL, args, env);+ bool okay = ret == ENOENT;+ return !okay;+++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_run "$LINENO"+then :++printf "%s\n" "#define USE_POSIX_SPAWN /**/" >>confdefs.h++ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5+printf "%s\n" "yes" >&6; }+else $as_nop+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no, falling back to fork/exec" >&5+printf "%s\n" "no, falling back to fork/exec" >&6; }+fi+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \+ conftest.$ac_objext conftest.beam conftest.$ac_ext+fi++fi+++for fp_const_name in SIG_DFL SIG_IGN+do+as_fp_Cache=`printf "%s\n" "fp_cv_const_$fp_const_name" | $as_tr_sh`+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking value of $fp_const_name" >&5+printf %s "checking value of $fp_const_name... " >&6; }+if eval test \${$as_fp_Cache+y}+then :+ printf %s "(cached) " >&6+else $as_nop+ if ac_fn_c_compute_int "$LINENO" "$fp_const_name" "fp_check_const_result" "$ac_includes_default"+then :++else $as_nop+ fp_check_const_result='-1'+fi++eval "$as_fp_Cache=\$fp_check_const_result"+fi+eval ac_res=\$$as_fp_Cache+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5+printf "%s\n" "$ac_res" >&6; }+cat >>confdefs.h <<_ACEOF+#define `printf "%s\n" "CONST_$fp_const_name" | $as_tr_cpp` `eval 'as_val=${'$as_fp_Cache'};printf "%s\n" "$as_val"'`+_ACEOF++done+++cat >confcache <<\_ACEOF+# This file is a shell script that caches the results of configure+# tests run on this system so they can be shared between configure+# scripts and configure runs, see configure's option --config-cache.+# It is not useful on other systems. 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"invalid argument: \`$ac_config_target'" "$LINENO" 5;;+ esac+done+++# If the user did not use the arguments to specify the items to instantiate,+# then the envvar interface is used. Set only those that are not.+# We use the long form for the default assignment because of an extremely+# bizarre bug on SunOS 4.1.3.+if $ac_need_defaults; then+ test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers+fi++# Have a temporary directory for convenience. Make it in the build tree+# simply because there is no reason against having it here, and in addition,+# creating and moving files from /tmp can sometimes cause problems.+# Hook for its removal unless debugging.+# Note that there is a small window in which the directory will not be cleaned:+# after its creation but before its name has been assigned to `$tmp'.+$debug ||+{+ tmp= ac_tmp=+ trap 'exit_status=$?+ : "${ac_tmp:=$tmp}"+ { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status+' 0+ trap 'as_fn_exit 1' 1 2 13 15+}+# Create a (secure) tmp directory for tmp files.++{+ tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&+ test -d "$tmp"+} ||+{+ tmp=./conf$$-$RANDOM+ (umask 077 && mkdir "$tmp")+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5+ac_tmp=$tmp++# Set up the scripts for CONFIG_HEADERS section.+# No need to generate them if there are no CONFIG_HEADERS.+# This happens for instance with `./config.status Makefile'.+if test -n "$CONFIG_HEADERS"; then+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||+BEGIN {+_ACEOF++# Transform confdefs.h into an awk script `defines.awk', embedded as+# here-document in config.status, that substitutes the proper values into+# config.h.in to produce config.h.++# Create a delimiter string that does not exist in confdefs.h, to ease+# handling of long lines.+ac_delim='%!_!# '+for ac_last_try in false false :; do+ ac_tt=`sed -n "/$ac_delim/p" confdefs.h`+ if test -z "$ac_tt"; then+ break+ elif $ac_last_try; then+ as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5+ else+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "+ fi+done++# For the awk script, D is an array of macro values keyed by name,+# likewise P contains macro parameters if any. Preserve backslash+# newline sequences.++ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*+sed -n '+s/.\{148\}/&'"$ac_delim"'/g+t rset+:rset+s/^[ ]*#[ ]*define[ ][ ]*/ /+t def+d+:def+s/\\$//+t bsnl+s/["\\]/\\&/g+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\+D["\1"]=" \3"/p+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2"/p+d+:bsnl+s/["\\]/\\&/g+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\+D["\1"]=" \3\\\\\\n"\\/p+t cont+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p+t cont+d+:cont+n+s/.\{148\}/&'"$ac_delim"'/g+t clear+:clear+s/\\$//+t bsnlc+s/["\\]/\\&/g; s/^/"/; s/$/"/p+d+:bsnlc+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p+b cont+' <confdefs.h | sed '+s/'"$ac_delim"'/"\\\+"/g' >>$CONFIG_STATUS || ac_write_fail=1++cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1+ for (key in D) D_is_set[key] = 1+ FS = ""+}+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {+ line = \$ 0+ split(line, arg, " ")+ if (arg[1] == "#") {+ defundef = arg[2]+ mac1 = arg[3]+ } else {+ defundef = substr(arg[1], 2)+ mac1 = arg[2]+ }+ split(mac1, mac2, "(") #)+ macro = mac2[1]+ prefix = substr(line, 1, index(line, defundef) - 1)+ if (D_is_set[macro]) {+ # Preserve the white space surrounding the "#".+ print prefix "define", macro P[macro] D[macro]+ next+ } else {+ # Replace #undef with comments. This is necessary, for example,+ # in the case of _POSIX_SOURCE, which is predefined and required+ # on some systems where configure will not decide to define it.+ if (defundef == "undef") {+ print "/*", prefix defundef, macro, "*/"+ next+ }+ }+}+{ print }+_ACAWK+_ACEOF+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1+ as_fn_error $? "could not setup config headers machinery" "$LINENO" 5+fi # test -n "$CONFIG_HEADERS"+++eval set X " :H $CONFIG_HEADERS "+shift+for ac_tag+do+ case $ac_tag in+ :[FHLC]) ac_mode=$ac_tag; continue;;+ esac+ case $ac_mode$ac_tag in+ :[FHL]*:*);;+ :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;+ :[FH]-) ac_tag=-:-;;+ :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;+ esac+ ac_save_IFS=$IFS+ IFS=:+ set x $ac_tag+ IFS=$ac_save_IFS+ shift+ ac_file=$1+ shift++ case $ac_mode in+ :L) ac_source=$1;;+ :[FH])+ ac_file_inputs=+ for ac_f+ do+ case $ac_f in+ -) ac_f="$ac_tmp/stdin";;+ *) # Look for the file first in the build tree, then in the source tree+ # (if the path is not absolute). The absolute path cannot be DOS-style,+ # because $ac_f cannot contain `:'.+ test -f "$ac_f" ||+ case $ac_f in+ [\\/$]*) false;;+ *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;+ esac ||+ as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;+ esac+ case $ac_f in *\'*) ac_f=`printf "%s\n" "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac+ as_fn_append ac_file_inputs " '$ac_f'"+ done++ # Let's still pretend it is `configure' which instantiates (i.e., don't+ # use $as_me), people would be surprised to read:+ # /* config.h. Generated by config.status. */+ configure_input='Generated from '`+ printf "%s\n" "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'+ `' by configure.'+ if test x"$ac_file" != x-; then+ configure_input="$ac_file. $configure_input"+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5+printf "%s\n" "$as_me: creating $ac_file" >&6;}+ fi+ # Neutralize special characters interpreted by sed in replacement strings.+ case $configure_input in #(+ *\&* | *\|* | *\\* )+ ac_sed_conf_input=`printf "%s\n" "$configure_input" |+ sed 's/[\\\\&|]/\\\\&/g'`;; #(+ *) ac_sed_conf_input=$configure_input;;+ esac++ case $ac_tag in+ *:-:* | *:-) cat >"$ac_tmp/stdin" \+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;+ esac+ ;;+ esac++ ac_dir=`$as_dirname -- "$ac_file" ||+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \+ X"$ac_file" : 'X\(//\)[^/]' \| \+ X"$ac_file" : 'X\(//\)$' \| \+ X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||+printf "%s\n" X"$ac_file" |+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{+ s//\1/+ q+ }+ /^X\(\/\/\)[^/].*/{+ s//\1/+ q+ }+ /^X\(\/\/\)$/{+ s//\1/+ q+ }+ /^X\(\/\).*/{+ s//\1/+ q+ }+ s/.*/./; q'`+ as_dir="$ac_dir"; as_fn_mkdir_p+ ac_builddir=.++case "$ac_dir" in+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;+*)+ ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`+ # A ".." for each directory in $ac_dir_suffix.+ ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`+ case $ac_top_builddir_sub in+ "") ac_top_builddir_sub=. ac_top_build_prefix= ;;+ *) ac_top_build_prefix=$ac_top_builddir_sub/ ;;+ esac ;;+esac+ac_abs_top_builddir=$ac_pwd+ac_abs_builddir=$ac_pwd$ac_dir_suffix+# for backward compatibility:+ac_top_builddir=$ac_top_build_prefix++case $srcdir in+ .) # We are building in place.+ ac_srcdir=.+ ac_top_srcdir=$ac_top_builddir_sub+ ac_abs_top_srcdir=$ac_pwd ;;+ [\\/]* | ?:[\\/]* ) # Absolute name.+ ac_srcdir=$srcdir$ac_dir_suffix;+ ac_top_srcdir=$srcdir+ ac_abs_top_srcdir=$srcdir ;;+ *) # Relative name.+ ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix+ ac_top_srcdir=$ac_top_build_prefix$srcdir+ ac_abs_top_srcdir=$ac_pwd/$srcdir ;;+esac+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix+++ case $ac_mode in++ :H)+ #+ # CONFIG_HEADER+ #+ if test x"$ac_file" != x-; then+ {+ printf "%s\n" "/* $configure_input */" >&1 \+ && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"+ } >"$ac_tmp/config.h" \+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5+ if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5+printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}+ else+ rm -f "$ac_file"+ mv "$ac_tmp/config.h" "$ac_file" \+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5+ fi+ else+ printf "%s\n" "/* $configure_input */" >&1 \+ && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \+ || as_fn_error $? "could not create -" "$LINENO" 5+ fi+ ;;+++ esac++done # for ac_tag+++as_fn_exit 0+_ACEOF+ac_clean_files=$ac_clean_files_save++test $ac_write_fail = 0 ||+ as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5+++# configure is writing to config.log, and then calls config.status.+# config.status does its own redirection, appending to config.log.+# Unfortunately, on DOS this fails, as config.log is still kept open+# by configure, so config.status won't be able to write to it; its+# output is simply discarded. So we exec the FD to /dev/null,+# effectively closing config.log, so it can be properly (re)opened and+# appended to by config.status. When coming back to configure, we+# need to make the FD available again.+if test "$no_create" != yes; then+ ac_cs_success=:+ ac_config_status_args=+ test "$silent" = yes &&+ ac_config_status_args="$ac_config_status_args --quiet"+ exec 5>/dev/null+ $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false+ exec 5>>config.log+ # Use ||, not &&, to avoid exiting from the if with $? = 1, which+ # would make configure fail if this is the last instruction.+ $ac_cs_success || as_fn_exit 1+fi+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5+printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}+fi+
configure.ac view
@@ -1,4 +1,4 @@-AC_INIT([Haskell process package], [1.0], [libraries@haskell.org], [process])+AC_INIT([Haskell process package],[1.0],[libraries@haskell.org],[process]) # Safety check: Ensure that we are in the correct source directory. AC_CONFIG_SRCDIR([include/runProcess.h])@@ -7,7 +7,7 @@ AC_PROG_CC -dnl ** Working vfork?+dnl ** Working fork? AC_FUNC_FORK # check for specific header (.h) files that we are interested in@@ -15,10 +15,15 @@ AC_CHECK_FUNCS([setitimer sysconf]) AC_CHECK_FUNCS([execvpe])+AC_CHECK_FUNCS([pipe2],[],[],[+ #define _GNU_SOURCE+ #include <unistd.h>+ #include <fcntl.h>+]) # posix_spawn checks AC_CHECK_HEADERS([spawn.h])-AC_CHECK_FUNCS([posix_spawnp posix_spawn_file_actions_addchdir],[],[],[+AC_CHECK_FUNCS([posix_spawnp posix_spawn_file_actions_addchdir_np posix_spawn_file_actions_addchdir],[],[],[ #define _GNU_SOURCE #include <spawn.h> ])@@ -30,6 +35,41 @@ #define _GNU_SOURCE #include <spawn.h> ])++if test "$ac_cv_func_posix_spawnp" = "yes"; then+ dnl On OpenBSD posix_spawnp doesn't report ENOENT when+ dnl the user attempts to spawn a process with a non-existent+ dnl executable. Don't attempt to use such posix_spawn+ dnl implementations to ensure errors are reported correctly.+ dnl See #224.++ AC_MSG_CHECKING(whether posix_spawn reports errors sensibly)+ AC_RUN_IFELSE(+ [AC_LANG_PROGRAM([+ #include <stddef.h>+ #include <stdbool.h>+ #include <errno.h>+ #include <spawn.h>+ ], [[+ pid_t pid;+ char *prog = "__nonexistent_program__";+ char *args[] = {prog, NULL};+ char *env[] = {NULL};++ // This should fail with ENOENT+ int ret = posix_spawnp(&pid, prog, NULL, NULL, args, env);+ bool okay = ret == ENOENT;+ return !okay;+ ]]+ )],+ [AC_DEFINE([USE_POSIX_SPAWN], [], [posix_spawn should be used])+ AC_MSG_RESULT(yes)],+ [AC_MSG_RESULT([no, falling back to fork/exec])],+ [AC_DEFINE([USE_POSIX_SPAWN], [], [])+ AC_MSG_RESULT(cross-compiling - assuming yes)]+ )+fi+ FP_CHECK_CONSTS([SIG_DFL SIG_IGN])
include/HsProcessConfig.h.in view
@@ -30,8 +30,8 @@ /* Define to 1 if you have the <inttypes.h> header file. */ #undef HAVE_INTTYPES_H -/* Define to 1 if you have the <memory.h> header file. */-#undef HAVE_MEMORY_H+/* Define to 1 if you have the `pipe2' function. */+#undef HAVE_PIPE2 /* Define to 1 if you have the `posix_spawnp' function. */ #undef HAVE_POSIX_SPAWNP@@ -40,6 +40,10 @@ */ #undef HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR +/* Define to 1 if you have the `posix_spawn_file_actions_addchdir_np'+ function. */+#undef HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP+ /* Define to 1 if you have the `setitimer' function. */ #undef HAVE_SETITIMER @@ -52,6 +56,9 @@ /* Define to 1 if you have the <stdint.h> header file. */ #undef HAVE_STDINT_H +/* Define to 1 if you have the <stdio.h> header file. */+#undef HAVE_STDIO_H+ /* Define to 1 if you have the <stdlib.h> header file. */ #undef HAVE_STDLIB_H @@ -106,10 +113,15 @@ /* Define to the version of this package. */ #undef PACKAGE_VERSION -/* Define to 1 if you have the ANSI C header files. */+/* Define to 1 if all of the C90 standard headers exist (not just the ones+ required in a freestanding environment). This macro is provided for+ backward compatibility; new code need not use it. */ #undef STDC_HEADERS -/* Define to `int' if <sys/types.h> does not define. */+/* posix_spawn should be used */+#undef USE_POSIX_SPAWN++/* Define as a signed integer type capable of holding a process identifier. */ #undef pid_t /* Define as `fork' if `vfork' does not work. */
include/runProcess.h view
@@ -31,7 +31,11 @@ #include "processFlags.h" -#if !(defined(_MSC_VER) || defined(__MINGW32__) || defined(_WIN32))+#include <ghcplatform.h>++#if defined(wasm32_HOST_ARCH)++#elif !(defined(_MSC_VER) || defined(__MINGW32__) || defined(_WIN32)) #include <pwd.h> #include <grp.h>
+ jsbits/process.js view
@@ -0,0 +1,581 @@+//#OPTIONS: CPP++// #define JS_TRACE_PROCESS 1++#ifdef JS_TRACE_PROCESS+function h$logProcess() { h$log.apply(h$log,arguments); }+#define TRACE_PROCESS(args...) h$logProcess(args)+#else+#define TRACE_PROCESS(args...)+#endif++/*+ Convert from a string signal name to a signal number.++ To ensure consistent signal numbers between platforms we use signal+ numbers from the emscripten SDK whenever we use a numeric signal code.++ These might differ from the actual numbers of the operating system+ on which the nodejs process is running.++ list from emscripten /system/lib/libc/musl/arch/emscripten/bits/signal.h++ Note: we should possibly move this into the base or rts package in the future+ */+var h$process_signals = {+ 'SIGHUP': 1,+ 'SIGINT': 2,+ 'SIGQUIT': 3,+ 'SIGILL': 4,+ 'SIGTRAP': 5,+ 'SIGABRT': 6,+ 'SIGIOT': 6,+ 'SIGBUS': 7,+ 'SIGFPE': 8,+ 'SIGKILL': 9,+ 'SIGUSR1': 10,+ 'SIGSEGV': 11,+ 'SIGUSR2': 12,+ 'SIGPIPE': 13,+ 'SIGALRM': 14,+ 'SIGTERM': 15,+ 'SIGSTKFLT': 16,+ 'SIGCHLD': 17,+ 'SIGCONT': 18,+ 'SIGSTOP': 19,+ 'SIGTSTP': 20,+ 'SIGTTIN': 21,+ 'SIGTTOU': 22,+ 'SIGURG': 23,+ 'SIGXCPU': 24,+ 'SIGXFSZ': 25,+ 'SIGVTALRM': 26,+ 'SIGPROF': 27,+ 'SIGWINCH': 28,+ 'SIGIO': 29,+ 'SIGPOLL': 29,+ 'SIGPWR': 30,+ 'SIGSYS': 31,+ 'SIGUNUSED': 31+};++/*+ Create a one-directional pipe for communication with the child process++ - pipe: a Readable or Writable stream from spawning the child process+ - write: boolean - true if the pipe is for writing, false for reading+ */+function h$process_pipeFd(pipe, write) {+ var fdN = h$base_fdN--, fd = {};+ h$base_fds[fdN] = fd;+ TRACE_PROCESS("pipe", fdN, "opened, writable:", write);++ if(pipe && pipe._handle && typeof pipe._handle.fd === 'number') fd.fd = pipe._handle.fd;+ TRACE_PROCESS("pipe real fd", fd.fd);++ if(write) {+ fd.err = null;+ fd.waiting = new h$Queue();+ fd.close = function(fd, fdo, c) { delete h$base_fds[fd]; pipe.end(); c(0); };+ fd.refs = 1;+ pipe.on('error', function(err) {+ TRACE_PROCESS("pipe received error", fd, err);+ fd.err = err;+ });+ fd.write = function(fd, fdo, buf, buf_offset, n, c) {+ TRACE_PROCESS("pipe ", fd, " write:", n);+ if(fdo.err) {+ TRACE_PROCESS("pipe error", fdo.err);+ h$setErrno(fdo.err);+ c(-1);+ return;+ }+ var nbuf = buf.u8.slice(buf_offset, buf_offset+n);+ var r = pipe.write(nbuf, function() {+ TRACE_PROCESS("pipe", fd, "flushed");+ c(n);+ });+ TRACE_PROCESS("pipe write", fd, "result", r);+ }+ } else {+ fd.close = function(fd, fdo, c) { delete h$base_fds[fd]; c(0); }+ fd.refs = 1;+ fd.waiting = new h$Queue();+ fd.chunk = { buf: null, pos: 0, processing: false };+ fd.eof = false;+ fd.err = null;+ fd.reading = false;++ pipe.on('end', function() {+ TRACE_PROCESS("pipe", fdN, fd.fd, "eof");+ fd.eof = true;+ h$process_process_pipe(fd, pipe);+ });+ pipe.on('error', function(err) {+ TRACE_PROCESS("pipe received error", fdN, fd.fd);+ fd.err = err;+ h$process_process_pipe(fd, pipe);+ });+ fd.read = function(fd, fdo, buf, buf_offset, n, c) {+ if(!fdo.reading) {+ /*+ Reading is a blocking operation (asynchronous) from the Haskell+ side. On the JavaScript side we rely on the 'readable' event to+ know when there is available data. Every time data comes in we+ process the queue of waiting read requests.++ We don't attach the 'readable' event handler until we actually+ read from the pipe, since the readable handler causes the node.js+ process to start buffering data from the file descriptor.++ If we don't read from the file descriptor it is unaffected by+ node.js buffering and we can for example pass it to another child+ process to allow direct communication between multiple child+ processes.+ */+ pipe.on('readable', function() {+ TRACE_PROCESS("pipe", fdN, fd.fd, "readable");+ h$process_process_pipe(fdo, pipe);+ });+ fdo.reading = true;+ h$process_process_pipe(fdo, pipe);+ }+ TRACE_PROCESS("pipe", fdN, fd.fd, "read", n, fdo.chunk.buf);+ fdo.waiting.enqueue({buf: buf, off: buf_offset, n: n, c: c});+ h$process_process_pipe(fdo, pipe);+ }+ }+ TRACE_PROCESS("created pipe, fd:", fdN);+ return fdN;+}++/*+ Process the queue of waiting read/write requests for a pipe+ */+function h$process_process_pipe(fd, pipe) {+ var c = fd.chunk;+ var q = fd.waiting;+ TRACE_PROCESS("processing pipe", fd);+ if(!q || !q.length() || c.processing) return;+ c.processing = true;+ while(fd.err && q.length()) {+ h$setErrno(fd.err);+ q.dequeue().c(-1);+ }+ if(!c.buf) {+ c.pos = 0;+ c.buf = pipe.read();+ }+ while(c.buf && q.length()) {+ var x = q.dequeue();+ var n = Math.min(c.buf.length - c.pos, x.n);+ for(var i=0;i<n;i++) {+ x.buf.u8[i+x.off] = c.buf[c.pos+i];+ }+ c.pos += n;+ x.c(n);+ // XXX this does reorder the requests if data comes in small chunks+ if(c.pos >= c.buf.length) c.buf = null;+ if(!c.buf && q.length()) {+ c.pos = 0;+ c.buf = pipe.read();+ }+ }+ while(fd.eof && q.length()) q.dequeue().c(0);+ TRACE_PROCESS("done processing pipe, remaining queue", q.length());+ c.processing = false;+}++/*+ Start an interactive child process using the node.js child_prcess.spawn+ functionality.++ Even though this is mostly a non-blocking operation (we don't wait until+ the child process has finished), this is an asynchronous function+ (with a continuation) because we want to wait until the child process has+ spawned before we resume the Haskell thread.++ This allows us to raise exceptions if the process could not be started, for+ example becaus of permission errors or a non-existent executable.++ Calls the continuation with a process object, or null when spawning the+ process has failed, after setting h$errno to the appropriate value.+ */+function h$process_runInteractiveProcess(+ cmd // string - command to run+ , args // array of strings - arguments+ , workingDir // string - working directory, null: unchanged+ , env // array of strings - environment [ key1, val1, key2, val2, ...]+ // null: inherit+ , stdin_fd // number - stdin fd, -1: createpipe, -2: ignore+ , stdout_fd // number - stdout fd, -1: createpipe, -2: ignore+ , stderr_fd // number - stderr fd, -1: createpipe, -2: ignore+ , _closeFds // boolean - close file descriptors in child (ignored)+ , createGroup // boolean - create a new process group+ , delegateCtlC // boolean - delegate control-C handling+ , newSession // boolean - use posix setsid to start the process in a new session+ , childGID // number - child group id, -1 for unchanged+ , childUID // number - child user id, -1 for unchanged+ , c // function - continuation, called when the process has spawned+ ) {+ TRACE_PROCESS("runInteractiveProcess");+ TRACE_PROCESS("cmd: ", cmd, " args: ", args);+ TRACE_PROCESS("workingDir: ", workingDir, " env: ", env);+ TRACE_PROCESS("stdin", stdin_fd, "stdout", stdout_fd, "stderr", stderr_fd);++ if(h$isNode()) {+ try {+ var stdin_p, stdout_p, stderr_p;++ function getStream(pos, spec) {+ // CreatePipe+ if(spec === -1) return 'pipe';++ // NoStream+ if(spec === -2) return 'ignore';++ // standard streams+ if(spec === 0) return spec == pos ? 'inherit' : process.stdin;+ if(spec === 1) return spec == pos ? 'inherit' : process.stdout;+ if(spec === 2) return spec == pos ? 'inherit' : process.stderr;++ // registered fd+ var stream = h$base_fds[spec];+ if(typeof stream.fd === 'number') return stream.fd;++ // raw fd+ if(typeof spec === 'number' && spec > 0) return spec;++ // unsupported stream type+ // the exception is caught and converted to an errno status code below+ throw new Error('EBADF');+ }++ stdin_p = getStream(0, stdin_fd);+ stdout_p = getStream(1, stdout_fd);+ stderr_p = getStream(2, stderr_fd);++ var options = { detached: newSession || createGroup+ , stdio: [stdin_p, stdout_p, stderr_p]+ };+ if(workingDir !== null) options.cwd = workingDir;+ if(env !== null) {+ var envObj = {};+ for(var i=0;i<env.length;i+=2) envObj[env[i]] = env[i+1];+ TRACE_PROCESS("environment: " + h$collectProps(envObj));+ options.env = envObj;+ }+ if(childGID !== -1) options.gid = childGID;+ if(childUID !== -1) options.uid = childUID;++ var procObj;+ var child;++ // node.js on Windows x86 sometimes throw an EBADF exception when+ // process.stdin is invalid, retry with ignored stdin when+ // this happens.+ TRACE_PROCESS("spawning process", cmd, args, options);++ try {+ child = h$child.spawn(cmd, args, options);+ } catch(e) {+ TRACE_PROCESS("spawning exception", e);++ if(e.toString().indexOf('EBADF') !== -1 && options.stdio[0] === process.stdin) {+ options.stdio[0] = 'ignore';+ child = h$child.spawn(cmd, args, options);+ } else {+ throw e;+ }+ }+ TRACE_PROCESS("spawn done, setting handlers");++ // keep track of whether the process has spawned, since we can get+ // multiple events for this and we only want to call the continuation+ // once.+ var spawned = false;++ child.on('exit', function(code, sig) {+ TRACE_PROCESS("process finished", code, sig);+ // if the spawn event hasn't fired we still have to call+ // the continuation for that+ if(!spawned) {+ spawned = true;+ c(procObj);+ } else {+ if(delegateCtlC) {+ h$process_stopDelegateControlC();+ }+ }+ if(code === null) {+ // process was killed by a signal+ var signo = h$process_signals[sig] || 31;+ // The Haskell side expects a negative status if killed+ // by a signal+ code = -signo;+ }+ procObj.exit = code;++ // notify all threads that are waiting for the exit code+ for(var i=0;i<procObj.waiters.length;i++) {+ procObj.waiters[i](code);+ }+ });++ child.on('spawn', function() {+ TRACE_PROCESS("process spawned");+ if(!spawned) {+ if(delegateCtlC) {+ h$process_startDelegateControlC();+ }+ spawned = true;+ c(procObj);+ }+ });++ child.on('error', function(e) {+ TRACE_PROCESS("process errored:", e);+ if(!spawned) {+ // if the process hasn't spawned yet we can raise an exception+ // immediately++ // prevent subsequent calls to the continuation+ spawned = true;++ h$setErrno(e);+ c(null);+ } else {+ /*+ Convert the node.js status code string to the appropriate+ (emscripten SDK) numeric error code.++ We should add a way to get the error code from the+ string without modifying the global h$errno value+ */+ var currentErrno = h$errno;+ h$setErrno(e.code);+ var code = h$errno;+ h$errno = currentErrno;++ procObj.exit = code;+ for(var i=0;i<procObj.waiters.length;i++) {+ procObj.waiters[i](code);+ }+ }+ });++ procObj = { fds: [ stdin_fd === -1 ? h$process_pipeFd(child.stdio[0], true) : null+ , stdout_fd === -1 ? h$process_pipeFd(child.stdio[1], false) : null+ , stderr_fd === -1 ? h$process_pipeFd(child.stdio[2], false) : null+ ]+ , exit: null+ , waiters : []+ , child: child+ };+ TRACE_PROCESS("process object created:", procObj);++ // sometimes the process has already spawned before we attach the 'spawn` event handler,+ // check here if it already has a pid and immediately call the continuation if that's the+ // case+ if(typeof child.pid === 'number') {+ TRACE_PROCESS("process spawned immediately", child.pid);++ spawned = true;+ c(procObj);+ }++ } catch(e) {+ TRACE_PROCESS("catch:", e);+ spawned = true;+ h$setErrno(e);+ c(null);+ }+ } else { // h$isNode+ h$unsupported(null, c);+ }+}++/*+ return the thing to run as an array, first element the process,+ followed by the the args. null if no interpreter can be found++ - cmd: string - the command to run+ - args: array of string - arguments, null to run cmd as a shell command+ in an interpreter.+ */+function h$process_commandToProcess(cmd, args) {+ if(h$isNode()) {+ TRACE_PROCESS("commandToProcess: ", cmd, args);+ if(process.platform === 'win32') {+ if(args === null) { // shellcmd+ var com = process.env['COMSPEC'];+ /*+ Note: The old GHCJS code had a fallback using code from+ the directory package (h$directory_findExecutables).+ Here we just produce an error if COMSPEC is not set,+ since we don't have the code from the directory package+ available.+ If needed we could implement similar functionality here.+ */+ if(!com) {+ h$setErrno('ENOENT');+ return null;+ }+ return [com, " /c " + cmd];+ } else {+ var r = [cmd];+ r = r.concat(args);+ return r;+ }+ } else { // non-windows+ if(args === null) { // shellcmd+ return ["/bin/sh", "-c", cmd];+ } else {+ var r = [cmd];+ r = r.concat(args);+ return r;+ }+ }+ } else {+ return h$unsupported(null);+ }+}+/*+ Send the SIGTERM signal to the child process+ */+function h$process_terminateProcess(ph) {+ TRACE_PROCESS("terminateProcess", ph);+ if(h$isNode()) {+ ph.child.kill();+ return 0;+ } else {+ return h$unsupported(1);+ }+}++/*+ Get the process exit code. Does not block.++ - returns 0 if the process has not exited yet.+ - returns 1 and saves the exit code in the code_d pointer otherwise+ */+function h$process_getProcessExitCode(ph, code_d, code_o) {+ TRACE_PROCESS("getProcessExitCode", ph);+ if(ph.exit === null) return 0;+ code_d.i3[code_o>>2] = ph.exit;+ return 1;+}++/*+ Wait for the process to finish and return the exit code.+ */+function h$process_waitForProcess(ph, code_d, code_o, c) {+ TRACE_PROCESS("waitForProcess", ph);+ if(h$isNode()) {+ if(ph.exit !== null) {+ h$process_getProcessExitCode(ph, code_d, code_o);+ c(0);+ } else {+ ph.waiters.push(function(code) {+ code_d.i3[code_o>>2] = code;+ c(0);+ });+ }+ } else {+ h$unsupported(-1, c);+ }+}++function h$process_interruptProcessGroupOf(ph) {+ TRACE_PROCESS("interruptProcessGroupOf", ph);+ if(h$isNode()) {+ // there doesn't appear to be a way to find the process+ // group id from a process id (ph.child.pid) on nodejs,+ // so this operation is unsupported.+ return h$unsupported(-1);+ } else {+ return h$unsupported(-1);+ }+}++var h$process_delegateControlCCount = 0;++/*+ We install a signal handler that ignores SIGINT/SIGQUIT while+ delegating ctl-c handling.++ This keeps the current node.js process running and propagates the+ signal to the child processes in the same group.+ */+function h$process_ignoreSIG() {+ TRACE_PROCESS("process_ignoreSIG: ignoring signal");+ return 0;+}++/*+ Start delegating ctl-c handling. Installs the above handler if this is the+ first process for which delegation is needed.+ */+function h$process_startDelegateControlC() {+ TRACE_PROCESS("startDelegateControlC", h$process_delegateControlCCount);+ if(h$isNode()) {+ if(h$process_delegateControlCCount === 0) {+ TRACE_PROCESS("startDelegateControlC: installing handler")+ process.on('SIGINT', h$process_ignoreSIG);+ process.on('SIGQUIT', h$process_ignoreSIG);++ }+ h$process_delegateControlCCount++;+ return 0;+ } else {+ return h$unsupported(-1);+ }+}++/*+ Stop delegating ctrl-c handling. Removes the above handler if this is the+ last process for which delegation is needed.+ */+function h$process_stopDelegateControlC() {+ TRACE_PROCESS("stopDelegateControlC", h$process_delegateControlCCount);+ if(h$isNode()) {+ if(h$process_delegateControlCCount > 0) {+ h$process_delegateControlCCount--;+ if(h$process_delegateControlCCount === 0) {+ TRACE_PROCESS("stopDelegateControlC: removing handler")+ process.off('SIGINT', h$process_ignoreSIG);+ process.off('SIGQUIT', h$process_ignoreSIG);+ }+ }+ return 0;+ } else {+ return h$unsupported(-1);+ }+}++/*+ Get the process id of the current (node.js) process+ */+function h$process_getCurrentProcessId() {+ TRACE_PROCESS("getCurrentProcessId");+ if(h$isNode()) {+ return process.pid;+ } else {+ return h$unsupported(-1);+ }+}++/*+ Get the process id of a child process+ */+function h$process_getProcessId(ph) {+ TRACE_PROCESS("getProcessId", ph);+ if(ph && typeof ph === 'object' &&+ ph.child && typeof ph.child == 'object' &&+ typeof ph.child.pid == 'number') {+ return ph.child.pid;+ } else {+ h$setErrno('EBADF');+ return -1;+ }+}
process.cabal view
@@ -1,14 +1,14 @@+cabal-version: 2.4 name: process-version: 1.6.13.1+version: 1.6.30.0 -- NOTE: Don't forget to update ./changelog.md-license: BSD3+license: BSD-3-Clause license-file: LICENSE maintainer: libraries@haskell.org bug-reports: https://github.com/haskell/process/issues synopsis: Process libraries category: System build-type: Configure-cabal-version: >=1.10 description: This package contains libraries for dealing with system processes. .@@ -18,9 +18,11 @@ read more about it at <https://github.com/fpco/typed-process/#readme>. +extra-doc-files:+ changelog.md+ extra-source-files: aclocal.m4- changelog.md configure configure.ac include/HsProcessConfig.h.in@@ -39,6 +41,11 @@ type: git location: https://github.com/haskell/process.git +flag os-string+ description: Use the new os-string package+ default: False+ manual: False+ library default-language: Haskell2010 other-extensions:@@ -52,52 +59,60 @@ exposed-modules: System.Cmd System.Process+ System.Process.CommunicationHandle+ System.Process.CommunicationHandle.Internal+ System.Process.Environment.OsString System.Process.Internals other-modules: System.Process.Common if os(windows) c-sources: cbits/win32/runProcess.c other-modules: System.Process.Windows- build-depends: Win32 >=2.2 && < 2.13+ build-depends: Win32 >= 2.14.1.0 && < 2.15 -- ole32 and rpcrt4 are needed to create GUIDs for unique named pipes -- for process. extra-libraries: kernel32, ole32, rpcrt4 cpp-options: -DWINDOWS else- c-sources:- cbits/posix/runProcess.c- cbits/posix/fork_exec.c- cbits/posix/posix_spawn.c- cbits/posix/find_executable.c- other-modules: System.Process.Posix- build-depends: unix >= 2.5 && < 2.8+ build-depends: unix >= 2.8.0.0 && < 2.9+ if arch(javascript)+ js-sources:+ jsbits/process.js+ other-modules: System.Process.JavaScript+ else+ c-sources:+ cbits/posix/runProcess.c+ cbits/posix/fork_exec.c+ cbits/posix/posix_spawn.c+ cbits/posix/find_executable.c+ other-modules: System.Process.Posix + -- On macOS, posix_spawn_file_actions_addchdir is available from macOS >= 26.+ -- We weakly reference this symbol when we are build on such a platform.+ -- However, weak references on MachO are hints to the dynamic loader, not the+ -- static linker, which will still expect the symbol to be defined somewhere.+ -- This means linking fails when we try to link an executable depending on+ -- process on a toolchain which doesn't have this symbol against a process+ -- library build on a toolchain with the symbol.+ -- See https://github.com/haskell/process/issues/376+ -- Hence: instruct the linker to explicilty allow undefined references to+ -- the symbol when linking against process on darwin+ if os(darwin)+ ld-options: -Wl,-U,_posix_spawn_file_actions_addchdir+ include-dirs: include- includes:- runProcess.h install-includes: runProcess.h processFlags.h ghc-options: -Wall - build-depends: base >= 4.10 && < 4.17,+ build-depends: base >= 4.12.0.0 && < 4.24, directory >= 1.1 && < 1.4,- filepath >= 1.2 && < 1.5,- deepseq >= 1.1 && < 1.5+ deepseq >= 1.1 && < 1.6 -test-suite test- default-language: Haskell2010- hs-source-dirs: test- main-is: main.hs- type: exitcode-stdio-1.0- -- Add otherwise redundant bounds on base since GHC's build system runs- -- `cabal check`, which mandates bounds on base.- build-depends: base >= 4 && < 5- , bytestring- , directory- , process- ghc-options: -threaded- -with-rtsopts "-N"- if os(windows)- cpp-options: -DWINDOWS+ if flag(os-string)+ build-depends: filepath >= 1.5.0.0 && < 1.6,+ os-string >= 2.0.0 && < 2.1+ else+ build-depends: filepath >= 1.4.100.0 && < 1.5.0.0
− test/main.hs
@@ -1,147 +0,0 @@-{-# LANGUAGE CPP #-}-import Control.Exception-import Control.Monad (guard, unless, void)-import System.Exit-import System.IO.Error-import System.Directory (getCurrentDirectory, setCurrentDirectory)-import System.Process-import Control.Concurrent-import Data.Char (isDigit)-import Data.List (isInfixOf)-import Data.Maybe (isNothing)-import System.IO (hClose, openBinaryTempFile, hGetContents)-import qualified Data.ByteString as S-import qualified Data.ByteString.Char8 as S8-import System.Directory (getTemporaryDirectory, removeFile)--ifWindows :: IO () -> IO ()-ifWindows action- | not isWindows = return ()- | otherwise = action--isWindows :: Bool-#if WINDOWS-isWindows = True-#else-isWindows = False-#endif--main :: IO ()-main = do- res <- handle (return . Left . isDoesNotExistError) $ do- (_, _, _, ph) <- createProcess (proc "definitelydoesnotexist" [])- { close_fds = True- }- fmap Right $ waitForProcess ph- case res of- Left True -> return ()- _ -> error $ show res-- let test name modifier = do- putStrLn $ "Running test: " ++ name- (_, _, _, ph) <- createProcess- $ modifier $ proc "echo" ["hello", "world"]- ec <- waitForProcess ph- if ec == ExitSuccess- then putStrLn $ "Success running: " ++ name- else error $ "echo returned: " ++ show ec-- test "vanilla" id-- -- FIXME need to debug this in the future on Windows- unless isWindows $ test "detach_console" $ \cp -> cp { detach_console = True }-- test "create_new_console" $ \cp -> cp { create_new_console = True }- test "new_session" $ \cp -> cp { new_session = True }-- putStrLn "Testing subdirectories"-- ifWindows $ withCurrentDirectory "exes" $ do- res1 <- readCreateProcess (proc "./echo.bat" []) ""- unless ("parent" `isInfixOf` res1 && not ("child" `isInfixOf` res1)) $ error $- "echo.bat with cwd failed: " ++ show res1-- res2 <- readCreateProcess (proc "./echo.bat" []) { cwd = Just "subdir" } ""- unless ("child" `isInfixOf` res2 && not ("parent" `isInfixOf` res2)) $ error $- "echo.bat with cwd failed: " ++ show res2-- putStrLn "Binary handles"- tmpDir <- getTemporaryDirectory- bracket- (openBinaryTempFile tmpDir "process-binary-test.bin")- (\(fp, h) -> hClose h `finally` removeFile fp)- $ \(fp, h) -> do- let bs = S8.pack "hello\nthere\r\nworld\0"- S.hPut h bs- hClose h-- (Nothing, Just out, Nothing, ph) <- createProcess (proc "cat" [fp])- { std_out = CreatePipe- }- res' <- S.hGetContents out- hClose out- ec <- waitForProcess ph- unless (ec == ExitSuccess)- $ error $ "Unexpected exit code " ++ show ec- unless (bs == res')- $ error $ "Unexpected result: " ++ show res'-- do -- multithreaded waitForProcess- (_, _, _, p) <- createProcess (proc "sleep" ["0.1"])- me1 <- newEmptyMVar- _ <- forkIO . void $ waitForProcess p >>= putMVar me1- -- check for race / deadlock between waitForProcess and getProcessExitCode- e3 <- getProcessExitCode p- e2 <- waitForProcess p- e1 <- readMVar me1- unless (isNothing e3)- $ error $ "unexpected exit " ++ show e3- unless (e1 == ExitSuccess && e2 == ExitSuccess)- $ error "sleep exited with non-zero exit code!"-- do- putStrLn "interrupt masked waitForProcess"- (_, _, _, p) <- createProcess (proc "sleep" ["1.0"])- mec <- newEmptyMVar- tid <- mask_ . forkIO $- (waitForProcess p >>= putMVar mec . Just)- `catchThreadKilled` putMVar mec Nothing- killThread tid- eec <- takeMVar mec- case eec of- Nothing -> return ()- Just ec ->- if isWindows- then putStrLn "FIXME ignoring known failure on Windows"- else error $ "waitForProcess not interrupted: sleep exited with " ++ show ec-- putStrLn "testing getPid"- do- (_, Just out, _, p) <-- if isWindows- then createProcess $ (proc "sh" ["-c", "z=$$; cat /proc/$z/winpid"]) {std_out = CreatePipe}- else createProcess $ (proc "sh" ["-c", "echo $$"]) {std_out = CreatePipe}- pid <- getPid p- line <- hGetContents out- putStrLn $ " queried PID: " ++ show pid- putStrLn $ " PID reported by stdout: " ++ show line- _ <- waitForProcess p- hClose out- let numStdoutPid = read (takeWhile isDigit line) :: Pid- unless (Just numStdoutPid == pid) $- if isWindows- then putStrLn "FIXME ignoring known failure on Windows"- else error "subprocess reported unexpected PID"-- putStrLn "Tests passed successfully"--withCurrentDirectory :: FilePath -> IO a -> IO a-withCurrentDirectory new inner = do- orig <- getCurrentDirectory- bracket_- (setCurrentDirectory new)- (setCurrentDirectory orig)- inner--catchThreadKilled :: IO a -> IO a -> IO a-catchThreadKilled f g = catchJust (\e -> guard (e == ThreadKilled)) f (\() -> g)