--- /dev/null
+`%
+% (c) The GRASP/AQUA Project, Glasgow University, 1995
+%
+% Last Modified: Wed Jul 19 13:12:10 1995
+% Darren J Moffat <moffatd@dcs.gla.ac.uk>
+%
+% Generated from: @(#)errno.h 2.14 90/01/23 SMI; from UCB 4.1 82/12/28
+\section[CError]{Interface to C Error Codes}
+
+\begin{code}
+module CError (
+ CErrorCode(..),
+
+ errorCodeToStr, -- :: CErrorCode -> String
+ getCErrorCode, -- :: PrimIO CErrorCode
+ setCErrorCode -- :: CErrorCode -> PrimIO ()
+
+) where
+
+import PreludeGlaST
+\end{code}
+
+import PreludeGlaMisc
+import LibSystem
+\begin{code}
+data CErrorCode =
+ NOERROR -- Added as dummy value since deriving Ix starts at 0
+ | EPERM -- Not owner
+ | ENOENT -- No such file or directory
+ | ESRCH -- No such process
+ | EINTR -- Interrupted system call
+ | EIO -- I/O error
+ | ENXIO -- No such device or address
+ | E2BIG -- Arg list too long
+ | ENOEXEC -- Exec format error
+ | EBADF -- Bad file number
+ | ECHILD -- No children
+ | EAGAIN -- No more processes
+ | ENOMEM -- Not enough core
+ | EACCES -- Permission denied
+ | EFAULT -- Bad address
+ | ENOTBLK -- Block device required
+ | EBUSY -- Mount device busy
+ | EEXIST -- File exists
+ | EXDEV -- Cross-device link
+ | ENODEV -- No such device
+ | ENOTDIR -- Not a directory*/
+ | EISDIR -- Is a directory
+ | EINVAL -- Invalid argument
+ | ENFILE -- File table overflow
+ | EMFILE -- Too many open files
+ | ENOTTY -- Not a typewriter
+ | ETXTBSY -- Text file busy
+ | EFBIG -- File too large
+ | ENOSPC -- No space left on device
+ | ESPIPE -- Illegal seek
+ | EROFS -- Read-only file system
+ | EMLINK -- Too many links
+ | EPIPE -- Broken pipe
+
+-- math software
+ | EDOM -- Argument too large
+ | ERANGE -- Result too large
+
+-- non-blocking and interrupt i/o
+ | EWOULDBLOCK -- Operation would block
+ | EINPROGRESS -- Operation now in progress
+ | EALREADY -- Operation already in progress
+-- ipc/network software
+
+-- argument errors
+ | ENOTSOCK -- Socket operation on non-socket
+ | EDESTADDRREQ -- Destination address required
+ | EMSGSIZE -- Message too long
+ | EPROTOTYPE -- Protocol wrong type for socket
+ | ENOPROTOOPT -- Protocol not available
+ | EPROTONOSUPPOR -- Protocol not supported
+ | ESOCKTNOSUPPORT -- Socket type not supported
+ | EOPNOTSUPP -- Operation not supported on socket
+ | EPFNOSUPPORT -- Protocol family not supported
+ | EAFNOSUPPORT -- Address family not supported by protocol family
+ | EADDRINUSE -- Address already in use
+ | EADDRNOTAVAIL -- Can't assign requested address
+-- operational errors
+ | ENETDOWN -- Network is down
+ | ENETUNREACH -- Network is unreachable
+ | ENETRESET -- Network dropped connection on reset
+ | ECONNABORTED -- Software caused connection abort
+ | ECONNRESET -- Connection reset by peer
+ | ENOBUFS -- No buffer space available
+ | EISCONN -- Socket is already connected
+ | ENOTCONN -- Socket is not connected
+ | ESHUTDOWN -- Can't send after socket shutdown
+ | ETOOMANYREFS -- Too many references: can't splice
+ | ETIMEDOUT -- Connection timed out
+ | ECONNREFUSED -- Connection refused
+
+ | ELOOP -- Too many levels of symbolic links
+ | ENAMETOOLONG -- File name too long
+
+-- should be rearranged
+ | EHOSTDOWN -- Host is down
+ | EHOSTUNREACH -- No route to host
+ | ENOTEMPTY -- Directory not empty
+
+-- quotas & mush
+ | EPROCLIM -- Too many processes
+ | EUSERS -- Too many users
+ | EDQUOT -- Disc quota exceeded
+
+-- Network File System
+ | ESTALE -- Stale NFS file handle
+ | EREMOTE -- Too many levels of remote in path
+
+-- streams
+ | ENOSTR -- Device is not a stream
+ | ETIME -- Timer expired
+ | ENOSR -- Out of streams resources
+ | ENOMSG -- No message of desired type
+ | EBADMSG -- Trying to read unreadable message
+
+-- SystemV IPC
+ | EIDRM -- Identifier removed
+
+-- SystemV Record Locking
+ | EDEADLK -- Deadlock condition.
+ | ENOLCK -- No record locks available.
+
+-- RFS
+ | ENONET -- Machine is not on the network
+ | ERREMOTE -- Object is remote
+ | ENOLINK -- the link has been severed
+ | EADV -- advertise error
+ | ESRMNT -- srmount error
+ | ECOMM -- Communication error on send
+ | EPROTO -- Protocol error
+ | EMULTIHOP -- multihop attempted
+ | EDOTDOT -- Cross mount point (not an error)
+ | EREMCHG -- Remote address changed
+-- POSIX
+ | ENOSYS -- function not implemented
+
+ deriving (Eq,Ord,Ix,Text)
+
+
+errorCodeToStr :: CErrorCode -> String
+errorCodeToStr NOERROR = ""
+errorCodeToStr EPERM = "Not owner"
+errorCodeToStr ENOENT = "No such file or directory"
+errorCodeToStr ESRCH = "No such process"
+errorCodeToStr EINTR = "Interrupted system call"
+errorCodeToStr EIO = "I/O error"
+errorCodeToStr ENXIO = "No such device or address"
+errorCodeToStr E2BIG = "Arg list too long"
+errorCodeToStr ENOEXEC = "Exec format error"
+errorCodeToStr EBADF = "Bad file number"
+errorCodeToStr ECHILD = "No children"
+errorCodeToStr EAGAIN = "No more processes"
+errorCodeToStr ENOMEM = "Not enough core"
+errorCodeToStr EACCES = "Permission denied"
+errorCodeToStr EFAULT = "Bad address"
+errorCodeToStr ENOTBLK = "Block device required"
+errorCodeToStr EBUSY = "Mount device busy"
+errorCodeToStr EEXIST = "File exists"
+errorCodeToStr EXDEV = "Cross-device link"
+errorCodeToStr ENODEV = "No such device"
+errorCodeToStr ENOTDIR = "Not a directory"
+errorCodeToStr EISDIR = "Is a directory"
+errorCodeToStr EINVAL = "Invalid argument"
+errorCodeToStr ENFILE = "File table overflow"
+errorCodeToStr EMFILE = "Too many open files"
+errorCodeToStr ENOTTY = "Not a typewriter"
+errorCodeToStr ETXTBSY = "Text file busy"
+errorCodeToStr EFBIG = "File too large"
+errorCodeToStr ENOSPC = "No space left on device"
+errorCodeToStr ESPIPE = "Illegal seek"
+errorCodeToStr EROFS = "Read-only file system"
+errorCodeToStr EMLINK = "Too many links"
+errorCodeToStr EPIPE = "Broken pipe"
+
+-- math software
+errorCodeToStr EDOM = "Argument too large"
+errorCodeToStr ERANGE = "Result too large"
+
+-- non-blocking and interrupt i/o"
+errorCodeToStr EWOULDBLOCK = "Operation would block"
+errorCodeToStr EINPROGRESS = "Operation now in progress"
+errorCodeToStr EALREADY = "Operation already in progress"
+-- ipc/network software
+
+-- argument errors
+errorCodeToStr ENOTSOCK = "Socket operation on non-socket"
+errorCodeToStr EDESTADDRREQ = "Destination address required"
+errorCodeToStr EMSGSIZE = "Message too long"
+errorCodeToStr EPROTOTYPE = "Protocol wrong type for socket"
+errorCodeToStr ENOPROTOOPT = "Protocol not available"
+errorCodeToStr EPROTONOSUPPOR = "Protocol not supported"
+errorCodeToStr ESOCKTNOSUPPORT = "Socket type not supported"
+errorCodeToStr EOPNOTSUPP = "Operation not supported on socket"
+errorCodeToStr EPFNOSUPPORT = "Protocol family not supported"
+errorCodeToStr EAFNOSUPPORT = "Address family not supported by protocol family"
+errorCodeToStr EADDRINUSE = "Address already in use"
+errorCodeToStr EADDRNOTAVAIL = "Can't assign requested address"
+
+-- operational errors
+errorCodeToStr ENETDOWN = "Network is down"
+errorCodeToStr ENETUNREACH = "Network is unreachable"
+errorCodeToStr ENETRESET = "Network dropped connection on reset"
+errorCodeToStr ECONNABORTED = "Software caused connection abort"
+errorCodeToStr ECONNRESET = "Connection reset by peer"
+errorCodeToStr ENOBUFS = "No buffer space available"
+errorCodeToStr EISCONN = "Socket is already connected"
+errorCodeToStr ENOTCONN = "Socket is not connected"
+errorCodeToStr ESHUTDOWN = "Can't send after socket shutdown"
+errorCodeToStr ETOOMANYREFS = "Too many references: can't splice"
+errorCodeToStr ETIMEDOUT = "Connection timed out"
+errorCodeToStr ECONNREFUSED = "Connection refused"
+
+errorCodeToStr ELOOP = "Too many levels of symbolic links"
+errorCodeToStr ENAMETOOLONG = "File name too long"
+
+-- should be rearranged
+errorCodeToStr EHOSTDOWN = "Host is down"
+errorCodeToStr EHOSTUNREACH = "No route to host"
+errorCodeToStr ENOTEMPTY = "Directory not empty"
+
+-- quotas & mush
+errorCodeToStr EPROCLIM = "Too many processes"
+errorCodeToStr EUSERS = "Too many users"
+errorCodeToStr EDQUOT = "Disc quota exceeded"
+
+-- Network File System
+errorCodeToStr ESTALE = "Stale NFS file handle"
+errorCodeToStr EREMOTE = "Too many levels of remote in path"
+
+-- streams
+errorCodeToStr ENOSTR = "Device is not a stream"
+errorCodeToStr ETIME = "Timer expired"
+errorCodeToStr ENOSR = "Out of streams resources"
+errorCodeToStr ENOMSG = "No message of desired type"
+errorCodeToStr EBADMSG = "Trying to read unreadable message"
+
+-- SystemV IPC
+errorCodeToStr EIDRM = "Identifier removed"
+
+-- SystemV Record Locking
+errorCodeToStr EDEADLK = "Deadlock condition."
+errorCodeToStr ENOLCK = "No record locks available."
+
+-- RFS
+errorCodeToStr ENONET = "Machine is not on the network"
+errorCodeToStr ERREMOTE = "Object is remote"
+errorCodeToStr ENOLINK = "the link has been severed"
+errorCodeToStr EADV = "advertise error"
+errorCodeToStr ESRMNT = "srmount error"
+errorCodeToStr ECOMM = "Communication error on send"
+errorCodeToStr EPROTO = "Protocol error"
+errorCodeToStr EMULTIHOP = "multihop attempted"
+errorCodeToStr EDOTDOT = "Cross mount point (not an error)"
+errorCodeToStr EREMCHG = "Remote address changed"
+
+-- POSIX
+errorCodeToStr ENOSYS = "function not implemented"
+
+unpackCErrorCode :: Int -> CErrorCode
+unpackCErrorCode e = (range (NOERROR, ENOSYS))!!e
+
+packCErrorCode :: CErrorCode -> Int
+packCErrorCode e = index (NOERROR, ENOSYS) e
+
+
+getCErrorCode :: PrimIO CErrorCode
+getCErrorCode =
+ _casm_ ``%r = errno;'' `thenPrimIO` \ errno ->
+ returnPrimIO (unpackCErrorCode errno)
+
+
+setCErrorCode :: CErrorCode -> PrimIO ()
+setCErrorCode ecode =
+ _casm_ ``errno = %0;'' (packCErrorCode ecode) `thenPrimIO` \ () ->
+ returnPrimIO ()
+
+
+\end{code}
+
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