VM_MAP_INSERT(9) BSD Kernel Developer's Manual VM_MAP_INSERT(9)NAME
vm_map_insert -- insert an object into a map
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h>
int
vm_map_insert(vm_map_t map, vm_object_t object, vm_ooffset_t offset, vm_offset_t start, vm_offset_t end, vm_prot_t prot, vm_prot_t max,
int cow);
DESCRIPTION
The vm_map_insert() function inserts a mapping for the entire vm_object object into the target map map.
The offset argument specifies the offset into the object at which to begin mapping. The object's size should match that of the specified
address range.
The start and end arguments specify the bounds of the mapped object's window in the address space of map.
The cow argument specifies the flags which should be propagated to the new entry, for example, to indicate that this is a copy-on-write map-
ping.
IMPLEMENTATION NOTES
This function implicitly creates a new vm_map_entry by calling the internal function vm_map_entry_create().
RETURN VALUES
The vm_map_insert() function returns KERN_SUCCESS if the mapping could be made successfully.
Otherwise, KERN_INVALID_ADDRESS will be returned if the start of the range could not be found, or KERN_NO_SPACE if the range was found to be
part of an existing entry or if it overlaps the end of the map.
SEE ALSO vm_map(9)AUTHORS
This manual page was written by Bruce M Simpson <bms@spc.org>.
BSD January 11, 2013 BSD
Check Out this Related Man Page
VM_MAP_FIND(9) BSD Kernel Developer's Manual VM_MAP_FIND(9)NAME
vm_map_find -- find a free region within a map, and optionally map a vm_object
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h>
int
vm_map_find(vm_map_t map, vm_object_t object, vm_ooffset_t offset, vm_offset_t *addr, vm_size_t length, int find_space, vm_prot_t prot,
vm_prot_t max, int cow);
DESCRIPTION
The vm_map_find() function attempts to find a free region in the target map, with the given length, and will also optionally create a mapping
of object.
The arguments offset, prot, max, and cow are passed unchanged to vm_map_insert(9) when creating the mapping, if and only if a free region is
found.
If object is non-NULL, the reference count on the object must be incremented by the caller before calling this function to account for the
new entry.
If find_space is either VMFS_ALIGNED_SPACE or VMFS_ANY_SPACE, the function will call vm_map_findspace(9) to discover a free region. More-
over, if find_space is VMFS_ALIGNED_SPACE, the address of the free region will be optimized for the use of superpages. Otherwise, if
find_space is VMFS_NO_SPACE, vm_map_insert(9) is called with the given address, addr.
IMPLEMENTATION NOTES
This function acquires a lock on map by calling vm_map_lock(9), and holds it until the function returns.
The search for a free region is defined to be first-fit, from the address addr onwards.
RETURN VALUES
The vm_map_find() function returns KERN_SUCCESS if the mapping was successfully created. If space could not be found or find_space was
VMFS_NO_SPACE and the given address, addr, was already mapped, KERN_NO_SPACE will be returned. If the discovered range turned out to be
bogus, KERN_INVALID_ADDRESS will be returned.
SEE ALSO vm_map(9), vm_map_findspace(9), vm_map_insert(9), vm_map_lock(9)AUTHORS
This manual page was written by Bruce M Simpson <bms@spc.org>.
BSD May 10, 2008 BSD
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