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Explain what the return value from NgRecvMsg() and NgRecvData() means,

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specifically that 0 means the socket has been closed.
This commit is contained in:
Brian Somers 2001-08-24 14:52:05 +00:00
parent f0e093f298
commit fd048a1c8a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=82275
1 changed files with 6 additions and 0 deletions
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6
lib/libnetgraph/netgraph.3
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@ -170,6 +170,9 @@ is non-NULL, it must point to a buffer of at least
bytes, which will be filled in (and NUL terminated) with the path to
the node from which the message was received.
.Pp
The length of the control message is returned.
A return value of zero indicates that the socket was closed.
.Pp
.Fn NgRecvAsciiMsg
works exactly like
.Fn NgRecvMsg ,
@ -206,6 +209,9 @@ is non-NULL, it must point to a buffer of at least
bytes, which will be filled in (and NUL terminated) with the name of
the hook on which the data was received.
.Pp
The length of the packet is returned.
A return value of zero indicates that the socket was closed.
.Pp
.Fn NgSetDebug
and
.Fn NgSetErrLog