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-rw-r--r--src/Propellor/Property/Mount.hs9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/Propellor/Property/Mount.hs b/src/Propellor/Property/Mount.hs
index 5dcc5fe1..2c4d9620 100644
--- a/src/Propellor/Property/Mount.hs
+++ b/src/Propellor/Property/Mount.hs
@@ -78,6 +78,10 @@ mount fs src mnt opts = boolSystem "mount" $
mountPoints :: IO [MountPoint]
mountPoints = lines <$> readProcess "findmnt" ["-rn", "--output", "target"]
+-- | Checks if anything is mounted at the MountPoint.
+isMounted :: MountPoint -> IO Bool
+isMounted mnt = isJust <$> getFsType mnt
+
-- | Finds all filesystems mounted inside the specified directory.
mountPointsBelow :: FilePath -> IO [MountPoint]
mountPointsBelow target = filter (\p -> simplifyPath p /= simplifyPath target)
@@ -129,12 +133,15 @@ blkidTag tag dev = catchDefaultIO Nothing $
-- | Unmounts a device or mountpoint,
-- lazily so any running processes don't block it.
+--
+-- Note that this will fail if it's not mounted.
umountLazy :: FilePath -> IO ()
umountLazy mnt =
unlessM (boolSystem "umount" [ Param "-l", Param mnt ]) $
stopPropellorMessage $ "failed unmounting " ++ mnt
--- | Unmounts anything mounted inside the specified directory.
+-- | Unmounts anything mounted inside the specified directory,
+-- not including the directory itself.
unmountBelow :: FilePath -> IO ()
unmountBelow d = do
submnts <- mountPointsBelow d