const pointers on free & kmapuseraddr

1 files changed, 14 insertions, 4 deletions

diff --git a/kernel/include/comus/memory.h b/kernel/include/comus/memory.h
index 942e7a8..255eca2 100644
--- a/kernel/include/comus/memory.h
+++ b/kernel/include/comus/memory.h
@@ -121,7 +121,7 @@ void *mem_mapaddr(mem_ctx_t ctx, void *phys, void *virt, size_t len,
  * Unmaps mapped address from the kmapaddr function
  * @param virt - the vitural address returned from kmapaddr
  */
-void mem_unmapaddr(mem_ctx_t ctx, void *virt);
+void mem_unmapaddr(mem_ctx_t ctx, const void *virt);
 
 /**
  * Allocate a single page of memory with the given paging structure
@@ -169,7 +169,7 @@ void *mem_alloc_pages_at(mem_ctx_t ctx, size_t count, void *virt,
  *
  * @param ptr - the pointer provided by alloc_page or alloc_pages
  */
-void mem_free_pages(mem_ctx_t ctx, void *ptr);
+void mem_free_pages(mem_ctx_t ctx, const void *ptr);
 
 /**
  * Allocates at least len bytes of memory starting at
@@ -185,10 +185,20 @@ void mem_free_pages(mem_ctx_t ctx, void *ptr);
 void *kmapaddr(void *phys, void *virt, size_t len, unsigned int flags);
 
 /**
+ * Map a vitural address in a userspace context to kernel space
+ *
+ * @param ctx - the userspace memory context to map from
+ * @param virt - the vitural address given by userspace
+ * @param len - the length of the buffer to map
+ * @returns vitural address mapped in kernel context
+ */
+void *kmapuseraddr(mem_ctx_t ctx, const void *virt, size_t len);
+
+/**
  * Unmaps mapped address from the kmapaddr function
  * @param virt - the vitural address returned from kmapaddr
  */
-void kunmapaddr(void *virt);
+void kunmapaddr(const void *virt);
 
 /**
  * Allocate a single page of memory
@@ -210,6 +220,6 @@ void *kalloc_pages(size_t count);
  *
  * @param ptr - the pointer provided by alloc_page or alloc_pages
  */
-void kfree_pages(void *ptr);
+void kfree_pages(const void *ptr);
 
 #endif /* memory.h */