fix: storage tables grow (handles, open files, encrypted opens, grants: Slots/Vec, no 8/16 caps; release follows all narrowed grants); storage says FULL, init spawn STORAGE_BUSY (was NOT_FOUND), pm BUSY; cap slots per process 64 -> 255

crates/libkos/src/fs.rs

@@ -25,6 +25,8 @@ pub enum FsError {
     PathTooLong,
     /// Outside this connection's scope, or beyond its rights.
     Denied,
+    /// Every connection storage has is in use.
+    Full,
     /// The server refused, or the call itself failed.
     Failed,
 }
@@ -64,7 +66,7 @@ impl Storage {
             syscall::Received::Signal { .. } => None,
         };
         let (true, Some(region)) = (tag == reply::ATTACHED, cap) else {
-            return Err(FsError::Failed);
+            return Err(if tag == reply::FULL { FsError::Full } else { FsError::Failed });
         };
         let mapped = crate::window::map_buffer(region, va).map_err(|_| FsError::Failed)?;
         let buf = mapped.get_mut(..size).ok_or(FsError::Failed)?;

crates/libkos/src/spawn.rs

@@ -16,6 +16,8 @@ pub enum SpawnError {
     NotFound,
     /// More than what is left of this process's spawn allowance.
     OverAllowance,
+    /// Storage had no connection free to load it through.
+    StorageBusy,
     Failed,
 }
 
@@ -44,6 +46,7 @@ pub fn spawn(init: CapSlot, binary: CapSlot, limits: Limits) -> Result<Spawned,
         }),
         (reply::NOT_FOUND, _) => Err(SpawnError::NotFound),
         (reply::OVER_ALLOWANCE, _) => Err(SpawnError::OverAllowance),
+        (reply::STORAGE_BUSY, _) => Err(SpawnError::StorageBusy),
         _ => Err(SpawnError::Failed),
     }
 }