zx_vmo_get_size

SUMMARY

Read the current size of a VMO object.

Declaration

#include <zircon/syscalls.h>

zx_status_t zx_vmo_get_size(zx_handle_t handle, uint64_t* size);

Description

zx_vmo_get_size() returns the current size of the virtual memory object (VMO). The size specified when creating a VMO (e.g. with zx_vmo_create()), and when resizing a VMO with zx_vmo_set_size() will be rounded up to the next system page size boundary. So the value returned by zx_vmo_get_size() will always be page-aligned.

Rights

TODO(fxbug.dev/32253)

Return value

zx_vmo_get_size() returns ZX_OK on success. In the event of failure, a negative error value is returned.

Errors

ZX_ERR_BAD_HANDLE handle is not a valid handle.

ZX_ERR_WRONG_TYPE handle is not a VMO handle.

ZX_ERR_INVALID_ARGS size is an invalid pointer or NULL.