* Changed some parameters of VM syscalls from int to uint32, mostly for sake

of consistency.
* Moved the B_OVERCOMMITTING_AREA flag from B_KERNEL_AREA_FLAGS to
  B_USER_AREA_FLAGS, since we really allow it to be passed from userland.
* Most VM syscalls check the provided protection against B_USER_AREA_FLAGS
  instead of B_USER_PROTECTION, now. This way they allow for
  B_OVERCOMMITTING_AREA as well.
* _user_map_file(), _user_set_memory_protection(): Check the protection like
  the other syscalls do and use fix_protection() instead of doing that
  manually.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36572 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/system/syscalls.h

@@ -398,15 +398,15 @@ extern status_t		_kern_reserve_address_range(addr_t* _address,
 extern status_t		_kern_unreserve_address_range(addr_t address, addr_t size);
 
 extern area_id		_kern_map_file(const char *name, void **address,
-						int addressSpec, size_t size, int protection,
-						int mapping, bool unmapAddressRange, int fd,
+						uint32 addressSpec, size_t size, uint32 protection,
+						uint32 mapping, bool unmapAddressRange, int fd,
 						off_t offset);
 extern status_t		_kern_unmap_memory(void *address, size_t size);
 extern status_t		_kern_set_memory_protection(void *address, size_t size,
-						int protection);
+						uint32 protection);
 extern status_t		_kern_sync_memory(void *address, size_t size, int flags);
 extern status_t		_kern_memory_advice(void *address, size_t size,
-						int advice);
+						uint32 advice);
 
 /* kernel port functions */
 extern port_id		_kern_create_port(int32 queue_length, const char *name);

headers/private/system/vm_defs.h

@@ -42,10 +42,9 @@
 	// Usable from userland according to its protection flags, but the area
 	// itself is not deletable, resizable, etc from userland.
 
-#define B_USER_AREA_FLAGS		(B_USER_PROTECTION)
+#define B_USER_AREA_FLAGS		(B_USER_PROTECTION | B_OVERCOMMITTING_AREA)
 #define B_KERNEL_AREA_FLAGS \
-	(B_KERNEL_PROTECTION | B_USER_CLONEABLE_AREA | B_OVERCOMMITTING_AREA \
-		| B_SHARED_AREA)
+	(B_KERNEL_PROTECTION | B_USER_CLONEABLE_AREA | B_SHARED_AREA)
 
 // mapping argument for several internal VM functions
 enum {