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VM_MAP_LOOKUP(9) BSD Kernel Developer's Manual VM_MAP_LOOKUP(9) NAME vm_map_lookup, vm_map_lookup_done -- lookup the vm_object backing a given virtual region SYNOPSIS #include <sys/param.h> #include <vm/vm.h> #include <vm/vm_map.h> int vm_map_lookup(vm_map_t *var_map, vm_offset_t vaddr, vm_prot_t fault_type, vm_map_entry_t *out_entry, vm_object_t *object, vm_pindex_t *pindex, vm_prot_t *out_prot, boolean_t *wired); void vm_map_lookup_done(vm_map_t map, vm_map_entry_t entry); DESCRIPTION The vm_map_lookup() function attempts to find the vm_object, page index and protection, for the given virtual address vaddr, in the map var_map, assuming a page fault of the type fault_type had occurred. Return values are guaranteed until vm_map_lookup_done() is called to re- lease the lock. IMPLEMENTATION NOTES The function vm_map_lookup() acquires a read-lock on the map *var_map, but does not release it. The caller should invoke vm_map_lookup_done() in order to release this lock. RETURN VALUES The vm_map_lookup() function returns KERN_SUCCESS, and sets the *object, *pindex, *out_prot, and *out_entry arguments appropriately for the hypo- thetical page fault. SEE ALSO vm_map(9) AUTHORS This manual page was written by Bruce M Simpson <bms@spc.org>. BSD July 19, 2003 BSD
NAME | SYNOPSIS | DESCRIPTION | IMPLEMENTATION NOTES | RETURN VALUES | SEE ALSO | AUTHORS
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