diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/vm/vm_map.c | 13 | ||||
| -rw-r--r-- | sys/vm/vm_map.h | 2 |
2 files changed, 15 insertions, 0 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index da8f06dedbd3..e2245715a0a5 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -1980,6 +1980,19 @@ vm_map_alignspace(vm_map_t map, vm_object_t object, vm_ooffset_t offset, } } +int +vm_map_find_aligned(vm_map_t map, vm_offset_t *addr, vm_size_t length, + vm_offset_t max_addr, vm_offset_t alignment) +{ + /* XXXKIB ASLR eh ? */ + *addr = vm_map_findspace(map, *addr, length); + if (*addr + length > vm_map_max(map) || + (max_addr != 0 && *addr + length > max_addr)) + return (KERN_NO_SPACE); + return (vm_map_alignspace(map, NULL, 0, addr, length, max_addr, + alignment)); +} + /* * vm_map_find finds an unallocated region in the target address * map with the given length. The search is defined to be diff --git a/sys/vm/vm_map.h b/sys/vm/vm_map.h index 2ddf9201fd42..f4de0ac2cdec 100644 --- a/sys/vm/vm_map.h +++ b/sys/vm/vm_map.h @@ -460,6 +460,8 @@ int vm_map_find(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t *, vm_size_t, vm_offset_t, int, vm_prot_t, vm_prot_t, int); int vm_map_find_min(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t *, vm_size_t, vm_offset_t, vm_offset_t, int, vm_prot_t, vm_prot_t, int); +int vm_map_find_aligned(vm_map_t map, vm_offset_t *addr, vm_size_t length, + vm_offset_t max_addr, vm_offset_t alignment); int vm_map_fixed(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t, vm_size_t, vm_prot_t, vm_prot_t, int); vm_offset_t vm_map_findspace(vm_map_t, vm_offset_t, vm_size_t); |