Author: kib
Date: Sun Jul 10 20:49:13 2011
New Revision: 223914
URL: http://svn.freebsd.org/changeset/base/223914
Log:
Extract the code to translate VM error into errno, into an exported
function vm_mmap_to_errno(). It is useful for the drivers that implement
mmap(2)-like functionality, to be able to return error codes consistent
with mmap(2).
Sponsored by: The FreeBSD Foundation
No objections from: alc
MFC after: 1 week
Modified:
head/sys/vm/vm_extern.h
head/sys/vm/vm_mmap.c
Modified: head/sys/vm/vm_extern.h
==============================================================================
--- head/sys/vm/vm_extern.h Sun Jul 10 20:45:13 2011 (r223913)
+++ head/sys/vm/vm_extern.h Sun Jul 10 20:49:13 2011 (r223914)
@@ -72,6 +72,7 @@ int vm_fault_wire(vm_map_t, vm_offset_t,
int vm_forkproc(struct thread *, struct proc *, struct thread *, struct
vmspace *, int);
void vm_waitproc(struct proc *);
int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int,
objtype_t, void *, vm_ooffset_t);
+int vm_mmap_to_errno(int rv);
void vm_set_page_size(void);
void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t);
struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t);
Modified: head/sys/vm/vm_mmap.c
==============================================================================
--- head/sys/vm/vm_mmap.c Sun Jul 10 20:45:13 2011 (r223913)
+++ head/sys/vm/vm_mmap.c Sun Jul 10 20:49:13 2011 (r223914)
@@ -1535,6 +1535,13 @@ vm_mmap(vm_map_t map, vm_offset_t *addr,
vm_map_wire(map, *addr, *addr + size,
VM_MAP_WIRE_USER|VM_MAP_WIRE_NOHOLES);
+ return (vm_mmap_to_errno(rv));
+}
+
+int
+vm_mmap_to_errno(int rv)
+{
+
switch (rv) {
case KERN_SUCCESS:
return (0);
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