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authorriastradh <riastradh@NetBSD.org>2023-05-22 14:07:24 +0000
committerriastradh <riastradh@NetBSD.org>2023-05-22 14:07:24 +0000
commitbc87ececf2bf392029c39dd8f8a3eb04c872f233 (patch)
treee8c3d11d7bce19923abcc82f81a22e3e91121f50 /sys/dev
parentb36f7ff099d821017af17e1b03ed9517fbb01169 (diff)
uiomove(9): Add uiopeek/uioskip operations.
This allows a caller to grab some data, consume part of it, and atomically update the uio with only the amount it consumed. This way, the caller can use a buffer of a size that doesn't depend on how much it will actually consume, which it may not know in advance -- e.g., because it depends on how much an underlying hardware tty device will accept before it decides it has had too much. Proposed on tech-kern: https://mail-index.netbsd.org/tech-kern/2023/05/09/msg028883.html (Opinions were divided between `uioadvance' and `uioskip'. I stuck with `uioskip' because that was less work for me.)
Diffstat (limited to 'sys/dev')
0 files changed, 0 insertions, 0 deletions