Changeset 9a8d91b in mainline for generic/src

Timestamp:

2006-04-12T16:40:35Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1ace9ea

Parents:

b7f364e

Message:

Add task_find_by_id().
Add kernel support for SYS_MAP_PHYSMEM.

Location:

generic/src

Files:

• ddi/ddi.c (added)
• mm/as.c (modified) (2 diffs)
• proc/task.c (modified) (1 diff)
• syscall/syscall.c (modified) (2 diffs)

generic/src/mm/as.c

@@ -353 +353 @@
         int flags;
 
-        flags = PAGE_USER | PAGE_PRESENT | PAGE_CACHEABLE;
+        flags = PAGE_USER | PAGE_PRESENT;
         
         if (a->flags & AS_AREA_READ)
@@ -364 +364 @@
                 flags |= PAGE_EXEC;
         
+        if (!(a->flags & AS_AREA_DEVICE))
+                flags |= PAGE_CACHEABLE;
+                
         return flags;
 }

generic/src/proc/task.c

@@ -173 +173 @@
 }
 
+/** Find task structure corresponding to task ID.
+ *
+ * The tasks_lock must be already held by the caller of this function
+ * and interrupts must be disabled.
+ *
+ * @param id Task ID.
+ *
+ * @return Task structure address or NULL if there is no such task ID.
+ */
+task_t *task_find_by_id(task_id_t id)
+{
+        btree_node_t *leaf;
+        
+        return (task_t *) btree_search(&tasks_btree, (btree_key_t) id, &leaf);
+}
+
 /** Print task list */
 void task_print_list(void)

generic/src/syscall/syscall.c

@@ -38 +38 @@
 #include <ipc/sysipc.h>
 #include <synch/futex.h>
+#include <ddi/ddi.h>
 
 static __native sys_io(int fd, const void * buf, size_t count) {
@@ -92 +93 @@
         sys_ipc_forward_fast,
         sys_ipc_wait_for_call,
-        sys_ipc_hangup
+        sys_ipc_hangup,
+        sys_map_physmem
 };