xnu-2422.110.17.tar.gz

[apple/xnu.git] / bsd / vm / vm_unix.c

diff --git a/bsd/vm/vm_unix.c b/bsd/vm/vm_unix.c
index 52f21a6ce1acde0c57b4237b9600b40a159fc569..1aa66039943dcf2be8eb4d9f1aba8b454bc801c6 100644 (file)
--- a/bsd/vm/vm_unix.c
+++ b/bsd/vm/vm_unix.c
@@ -98,7 +98,7 @@
 #include <sys/kern_memorystatus.h>
 
 
-int _shared_region_map( struct proc*, int, unsigned int, struct shared_file_mapping_np*, memory_object_control_t*, struct shared_file_mapping_np*); 
+int _shared_region_map_and_slide(struct proc*, int, unsigned int, struct shared_file_mapping_np*, uint32_t, user_addr_t, user_addr_t);
 int shared_region_copyin_mappings(struct proc*, user_addr_t, unsigned int, struct shared_file_mapping_np *);
 
 SYSCTL_INT(_vm, OID_AUTO, vm_debug_events, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_debug_events, 0, "");
@@ -1080,13 +1080,14 @@ shared_region_copyin_mappings(
  * requiring any further setup.
  */
 int
-_shared_region_map(
+_shared_region_map_and_slide(
        struct proc                             *p,
        int                                     fd,
        uint32_t                                mappings_count,
        struct shared_file_mapping_np           *mappings,
-       memory_object_control_t                 *sr_file_control,
-       struct shared_file_mapping_np           *mapping_to_slide)
+       uint32_t                                slide,
+       user_addr_t                             slide_start,
+       user_addr_t                             slide_size)
 {
        int                             error;
        kern_return_t                   kr;
@@ -1248,11 +1249,6 @@ _shared_region_map(
                goto done;
        }
 
-       if (sr_file_control != NULL) {
-               *sr_file_control = file_control;
-       }
-                        
-
 
        /* get the process's shared region (setup in vm_map_exec()) */
        shared_region = vm_shared_region_get(current_task());
@@ -1272,7 +1268,9 @@ _shared_region_map(
                                       file_control,
                                       file_size,
                                       (void *) p->p_fd->fd_rdir,
-                                      mapping_to_slide);
+                                      slide,
+                                      slide_start,
+                                      slide_size);
        if (kr != KERN_SUCCESS) {
                SHARED_REGION_TRACE_ERROR(
                        ("shared_region: %p [%d(%s)] map(%p:'%s'): "
@@ -1351,11 +1349,8 @@ shared_region_map_and_slide_np(
        struct shared_region_map_and_slide_np_args      *uap,
        __unused int                                    *retvalp)
 {
-       struct shared_file_mapping_np   mapping_to_slide;
        struct shared_file_mapping_np   *mappings;
-       unsigned int mappings_count = uap->count;
-
-       memory_object_control_t         sr_file_control;
+       unsigned int                    mappings_count = uap->count;
        kern_return_t                   kr = KERN_SUCCESS;
        uint32_t                        slide = uap->slide;
        
@@ -1404,23 +1399,13 @@ shared_region_map_and_slide_np(
        }
 
 
-       kr = _shared_region_map(p, uap->fd, mappings_count, mappings, &sr_file_control, &mapping_to_slide);
+       kr = _shared_region_map_and_slide(p, uap->fd, mappings_count, mappings,
+                                         slide,
+                                         uap->slide_start, uap->slide_size);
        if (kr != KERN_SUCCESS) {
                return kr;
        }
 
-       if (slide) {
-               kr = vm_shared_region_slide(slide, 
-                               mapping_to_slide.sfm_file_offset, 
-                               mapping_to_slide.sfm_size, 
-                               uap->slide_start, 
-                               uap->slide_size, 
-                               sr_file_control);
-               if (kr  != KERN_SUCCESS) {
-                       vm_shared_region_undo_mappings(NULL, 0, mappings, mappings_count);
-                       return kr;
-               }
-       }
 done:
        return kr;
 }