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Diffstat (limited to 'src/StatFS.hsc')
-rw-r--r-- | src/StatFS.hsc | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/src/StatFS.hsc b/src/StatFS.hsc deleted file mode 100644 index a9046c1..0000000 --- a/src/StatFS.hsc +++ /dev/null @@ -1,83 +0,0 @@ ------------------------------------------------------------------------------ --- | --- Module : StatFS --- Copyright : (c) Jose A Ortega Ruiz --- License : BSD-style (see LICENSE) --- --- Maintainer : Jose A Ortega Ruiz <jao@gnu.org> --- Stability : unstable --- Portability : unportable --- --- A binding to C's statvfs(2) --- ------------------------------------------------------------------------------ - -{-# LANGUAGE CPP, ForeignFunctionInterface, EmptyDataDecls #-} - - -module StatFS ( FileSystemStats(..), getFileSystemStats ) where - -import Foreign -import Foreign.C.Types -import Foreign.C.String -import Data.ByteString (useAsCString) -import Data.ByteString.Char8 (pack) - -#if defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__APPLE__) || defined (__DragonFly__) -#define IS_BSD_SYSTEM -#endif - -#ifdef IS_BSD_SYSTEM -# include <sys/param.h> -# include <sys/mount.h> -#else -# include <sys/vfs.h> -#endif - -data FileSystemStats = FileSystemStats { - fsStatBlockSize :: Integer - -- ^ Optimal transfer block size. - , fsStatBlockCount :: Integer - -- ^ Total data blocks in file system. - , fsStatByteCount :: Integer - -- ^ Total bytes in file system. - , fsStatBytesFree :: Integer - -- ^ Free bytes in file system. - , fsStatBytesAvailable :: Integer - -- ^ Free bytes available to non-superusers. - , fsStatBytesUsed :: Integer - -- ^ Bytes used. - } deriving (Show, Eq) - -data CStatfs - -#ifdef IS_BSD_SYSTEM -foreign import ccall unsafe "sys/mount.h statfs" -#else -foreign import ccall unsafe "sys/vfs.h statvfs" -#endif - c_statfs :: CString -> Ptr CStatfs -> IO CInt - -toI :: CULong -> Integer -toI = toInteger - -getFileSystemStats :: String -> IO (Maybe FileSystemStats) -getFileSystemStats path = - allocaBytes (#size struct statfs) $ \vfs -> - useAsCString (pack path) $ \cpath -> do - res <- c_statfs cpath vfs - if res /= 0 then return Nothing - else do - bsize <- (#peek struct statfs, f_bsize) vfs - bcount <- (#peek struct statfs, f_blocks) vfs - bfree <- (#peek struct statfs, f_bfree) vfs - bavail <- (#peek struct statfs, f_bavail) vfs - let bpb = toI bsize - return $ Just FileSystemStats - { fsStatBlockSize = bpb - , fsStatBlockCount = toI bcount - , fsStatByteCount = toI bcount * bpb - , fsStatBytesFree = toI bfree * bpb - , fsStatBytesAvailable = toI bavail * bpb - , fsStatBytesUsed = toI (bcount - bfree) * bpb - } |