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YAMAMOTO Takashi
30ad31e9d7
* Make readv/writev implementations update struct uio This can simplify partial result handling. * change the error number on the overflow from EOVERFLOW to EINVAL to match NetBSD * add a commented out uio_offset field. I used "#if 0" here as C comments can't nest. * add a few helper functions Note on uio_copyfrom/uio_copyto: although i'm not quite happy with the "offset" functionality, it's necessary to simplify the adaptation of some drivers like drivers/serial/serial.c, which (ab)uses the user-supplied buffer as a line-buffer.