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poll.2: Clarify wording describing of 'nfds' argument. 

reported by: rui rlex <rui.rlex@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2009-09-15 06:05:42 +02:00
parent 52520fb570
commit d8dfbff93f
1 changed files with 9 additions and 6 deletions
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15
man2/poll.2
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@ -28,7 +28,7 @@
.\" 2006-07-01, mtk, Added POLLRDHUP + various other wording and
.\" formatting changes.
.\"
.TH POLL 2 2009-06-02 "Linux" "Linux Programmer's Manual"
.TH POLL 2 2009-09-15 "Linux" "Linux Programmer's Manual"
.SH NAME
poll, ppoll \- wait for some event on a file descriptor
.SH SYNOPSIS
@ -52,9 +52,7 @@ to perform I/O.
The set of file descriptors to be monitored is specified in the
.I fds
argument, which is an array of
.I nfds
structures of the following form:
argument, which is an array of structures of the following form:
.in +4n
.nf
@ -63,9 +61,14 @@ struct pollfd {
short events; /* requested events */
short revents; /* returned events */
};
.fi
.in
.fi
.PP
The caller should specify the number of items in the
.I fds
array in
.IR nfds .
The field
.I fd
contains a file descriptor for an open file.