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nl: Return -NLE_AGAIN if non-blocking socket would block

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Previously 0 was returned which gave the caller no chance of detecting
when a non-blocking socket would block. If a caller intends to never
see an error message it should utilize poll()/select() to only read
when the socket has pending data or information.

Reported-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
This commit is contained in:
Thomas Graf 2013-04-02 11:58:18 +02:00
parent df66b0f267
commit 375a6294a4
1 changed files with 0 additions and 5 deletions
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5
lib/nl.c
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@ -627,11 +627,6 @@ retry:
NL_DBG(3, "recvmsg() returned EINTR, retrying\n");
goto retry;
}
if (errno == EAGAIN || errno == EWOULDBLOCK) {
NL_DBG(3, "recvmsg() returned EAGAIN||EWOULDBLOCK, aborting\n");
retval = 0;
goto abort;
}
retval = -nl_syserr2nlerr(errno);
goto abort;
}