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Diffstat (limited to 'manual/llio.texi')
| -rw-r--r-- | manual/llio.texi | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/manual/llio.texi b/manual/llio.texi index 4ac6c5fa4f..863b3b4316 100644 --- a/manual/llio.texi +++ b/manual/llio.texi @@ -1582,11 +1582,13 @@ descriptors are checked to see if they are ready for writing; and the conditions. You can pass a null pointer for any of these arguments if you are not interested in checking for that kind of condition. -A file descriptor is considered ready for reading if it is not at end of -file. A server socket is considered ready for reading if there is a -pending connection which can be accepted with @code{accept}; -@pxref{Accepting Connections}. A client socket is ready for writing when -its connection is fully established; @pxref{Connecting}. +A file descriptor is considered ready for reading if a @code{read} +call will not block. This usually includes the read offset being at +the end of the file or there is an error to report. A server socket +is considered ready for reading if there is a pending connection which +can be accepted with @code{accept}; @pxref{Accepting Connections}. A +client socket is ready for writing when its connection is fully +established; @pxref{Connecting}. ``Exceptional conditions'' does not mean errors---errors are reported immediately when an erroneous system call is executed, and do not |