a6dcc7e5924f9c27d3e9c6560a448b02ec28b65f |
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10-Mar-2015 |
Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> |
Introduce loop_read_exact helper
Usually when using loop_read(), we want to read the full buffer.
Add a helper that mirrors loop_write(), and returns 0 when full buffer
was read, and an error otherwise.
Use -ENODATA for the short read, to distinguish it from a read error. |