0eed604446
git-annex FTBFS on s390, mips, powerpc, sparc. That StatFS code is failing
on all of them. At least on s390, the failure appears as:
Just (FileSystemStats {fsStatBlockSize = 4096, fsStatBlockCount = 0,
fsStatByteCount = 0, fsStatBytesFree = 0, fsStatBytesAvailable = 0,
fsStatBytesUsed = 0})
While I don't understand why this is happening, or how to fix it,
bandaid over it by checking for obviously bad values and returning Nothing.
That disables disk free space checking, but at least git-annex will work.
Upstream bug: http://code.google.com/p/xmobar/issues/detail?id=70
128 lines
4.4 KiB
Haskell
128 lines
4.4 KiB
Haskell
-----------------------------------------------------------------------------
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-- |
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--
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-- (This code originally comes from xmobar)
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--
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-- Module : StatFS
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-- Copyright : (c) Jose A Ortega Ruiz
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-- License : BSD-3-clause
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--
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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--
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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-- 3. Neither the name of the author nor the names of his contributors
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-- may be used to endorse or promote products derived from this software
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-- without specific prior written permission.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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--
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-- Maintainer : Jose A Ortega Ruiz <jao@gnu.org>
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-- Stability : unstable
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-- Portability : unportable
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--
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-- A binding to C's statvfs(2)
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--
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-----------------------------------------------------------------------------
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{-# LANGUAGE CPP, ForeignFunctionInterface, EmptyDataDecls #-}
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module Utility.StatFS ( FileSystemStats(..), getFileSystemStats ) where
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import Foreign
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import Foreign.C.Types
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import Foreign.C.String
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import Data.ByteString (useAsCString)
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import Data.ByteString.Char8 (pack)
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#if defined (__FreeBSD__) || defined (__FreeBSD_kernel__) || defined (__APPLE__)
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# include <sys/param.h>
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# include <sys/mount.h>
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#else
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#if defined (__linux__)
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#include <sys/vfs.h>
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#else
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#define UNKNOWN
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#endif
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#endif
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data FileSystemStats = FileSystemStats {
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fsStatBlockSize :: Integer
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-- ^ Optimal transfer block size.
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, fsStatBlockCount :: Integer
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-- ^ Total data blocks in file system.
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, fsStatByteCount :: Integer
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-- ^ Total bytes in file system.
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, fsStatBytesFree :: Integer
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-- ^ Free bytes in file system.
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, fsStatBytesAvailable :: Integer
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-- ^ Free bytes available to non-superusers.
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, fsStatBytesUsed :: Integer
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-- ^ Bytes used.
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} deriving (Show, Eq)
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data CStatfs
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#ifdef UNKNOWN
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#warning free space checking code not available for this OS
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#else
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#if defined(__APPLE__)
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foreign import ccall unsafe "sys/mount.h statfs64"
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#else
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#if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
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foreign import ccall unsafe "sys/mount.h statfs"
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#else
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foreign import ccall unsafe "sys/vfs.h statfs64"
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#endif
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#endif
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c_statfs :: CString -> Ptr CStatfs -> IO CInt
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#endif
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toI :: CULong -> Integer
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toI = toInteger
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getFileSystemStats :: String -> IO (Maybe FileSystemStats)
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getFileSystemStats path =
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#ifdef UNKNOWN
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return Nothing
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#else
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allocaBytes (#size struct statfs) $ \vfs ->
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useAsCString (pack path) $ \cpath -> do
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res <- c_statfs cpath vfs
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if res == -1 then return Nothing
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else do
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bsize <- (#peek struct statfs, f_bsize) vfs
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bcount <- (#peek struct statfs, f_blocks) vfs
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bfree <- (#peek struct statfs, f_bfree) vfs
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bavail <- (#peek struct statfs, f_bavail) vfs
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let bpb = toI bsize
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let stats = FileSystemStats
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{ fsStatBlockSize = bpb
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, fsStatBlockCount = toI bcount
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, fsStatByteCount = toI bcount * bpb
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, fsStatBytesFree = toI bfree * bpb
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, fsStatBytesAvailable = toI bavail * bpb
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, fsStatBytesUsed = toI (bcount - bfree) * bpb
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}
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if fsStatBlockCount stats == 0 || fsStatBlockSize stats == 0
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then return Nothing
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else return $ Just stats
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#endif
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