Perform an operation on VMOs mapped into this VMAR.
#include <zircon/syscalls.h> zx_status_t zx_vmar_op_range(zx_handle_t handle, uint32_t op, zx_vaddr_t address, size_t size, void* buffer, size_t buffer_size);
zx_vmo_op_range() performs operation op on VMOs mapped in the range address to address+size.
address and size must fall entirely within this VMAR, and must meet the alignment requirements specified for op by
buffer and buffer_size are currently unused, and must be empty
The supported operations are:
ZX_VMO_OP_DECOMMIT - Requires the ZX_RIGHT_WRITE right, and applies only to writable mappings.
The operation's semantics are otherwise as described by
If op is ZX_VMO_OP_DECOMMIT, affected mappings must be writable.
zx_vmar_op_range() returns ZX_OK on success. In the event of failure, a negative error value is returned.
ZX_ERR_ACCESS_DENIED handle, or one of the affected VMO mappings, does not have sufficient rights to perform the operation.
ZX_ERR_BAD_HANDLE handle is not a valid handle.
ZX_ERR_BAD_STATE handle is not a live VMAR, or the range specified by address and size spans un-mapped pages.
ZX_ERR_INVALID_ARGS buffer is non-null, or buffer_size is non-zero, op is not a valid operation, size is zero, or address was not page-aligned.
ZX_ERR_NOT_SUPPORTED op was not ZX_VMO_OP_DECOMMIT, or one or more mapped VMOs do not support the requested op.
ZX_ERR_OUT_OF_RANGE The range specified by address and size is not wholy within the VM address range specified by handle.
ZX_ERR_WRONG_TYPE handle is not a VMAR handle.
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Last updated 2020-03-26.