zx_vmo_write

NAME

vmo_write - write bytes to the VMO

SYNOPSIS

#include <zircon/syscalls.h>

zx_status_t zx_vmo_write(zx_handle_t handle, const void* data, uint64_t offset,
                         size_t len);

DESCRIPTION

vmo_write() attempts to write exactly len bytes to a VMO at offset.

data pointer to a user buffer to write bytes from.

len number of bytes to attempt to write.

RETURN VALUE

zx_vmo_write() returns ZX_OK on success, and exactly len bytes will have been written from data. In the event of failure, a negative error value is returned, and the number of bytes written from data is undefined.

ERRORS

ZX_ERR_BAD_HANDLE handle is not a valid handle.

ZX_ERR_WRONG_TYPE handle is not a VMO handle.

ZX_ERR_ACCESS_DENIED handle does not have the ZX_RIGHT_WRITE right.

ZX_ERR_INVALID_ARGS data is an invalid pointer or NULL.

ZX_ERR_NO_MEMORY Failure to allocate system memory to complete write.

ZX_ERR_OUT_OF_RANGE offset starts at or beyond the end of the VMO, or VMO is shorter than len.