Hi Mihai, On So 26 Feb 2012 09:18:53 CET Mihai Moldovan wrote:
The Mac OS X 10.5 SDK requires the second argument of FD_ISSET to be writeable, although it does only access the data. Given that we have a const pointer for a const struct, copy and pass that. Note that this is merely a workaround for OS X 10.5, as 10.6 and later define the second argument of FD_ISSET as const struct const *foo, too. It it safe, as data is accessed read-only by FD_ISSET, even on 10.5. Signed-off-by: Mihai Moldovan <[email protected]> --- nxcomp/Agent.h | 28 ++++++++++++++++++++-------- 1 files changed, 20 insertions(+), 8 deletions(-) diff --git a/nxcomp/Agent.h b/nxcomp/Agent.h index fac5acd..ded344d 100644 --- a/nxcomp/Agent.h +++ b/nxcomp/Agent.h @@ -149,30 +149,38 @@ class Agent int remoteCanRead(const fd_set * const readSet) { + // OS X 10.5 requires the second argument to be non-const, so copy readSet. + // It's safe though, as FD_ISSET does not operate on it. + fd_set readWorkSet = *readSet; + #if defined(TEST) || defined(INFO) *logofs << "Agent: remoteCanRead() is " << - (FD_ISSET(remoteFd_, readSet) && transport_ -> dequeuable() != 0) - << " with FD_ISSET() " << (int) FD_ISSET(remoteFd_, readSet) + (FD_ISSET(remoteFd_, &readWorkSet) && transport_ -> dequeuable() != 0) + << " with FD_ISSET() " << (int) FD_ISSET(remoteFd_, &readWorkSet) << " and dequeuable " << transport_ -> dequeuable() << ".n" << logofs_flush; #endif - return (FD_ISSET(remoteFd_, readSet) && + return (FD_ISSET(remoteFd_, &readWorkSet) && transport_ -> dequeuable() != 0); } int remoteCanWrite(const fd_set * const writeSet) { + // OS X 10.5 requires the second argument to be non-const, so copy writeSet. + // It's safe though, as FD_ISSET does not operate on it. + fd_set writeWorkSet = *writeSet; + #if defined(TEST) || defined(INFO) *logofs << "Agent: remoteCanWrite() is " << - (FD_ISSET(remoteFd_, writeSet) && transport_ -> + (FD_ISSET(remoteFd_, &writeWorkSet) && transport_ -> queuable() != 0 && canRead_ == 1) << " with FD_ISSET() " - << (int) FD_ISSET(remoteFd_, writeSet) << " queueable " + << (int) FD_ISSET(remoteFd_, &writeWorkSet) << " queueable " << transport_ -> queuable() << " channel can read " << canRead_ << ".n" << logofs_flush; #endif - return (FD_ISSET(remoteFd_, writeSet) && + return (FD_ISSET(remoteFd_, &writeWorkSet) && transport_ -> queuable() != 0 && canRead_ == 1); } @@ -203,13 +211,17 @@ class Agent int proxyCanRead(const fd_set * const readSet) { + // OS X 10.5 requires the second argument to be non-const, so copy readSet. + // It's safe though, as FD_ISSET does not operate on it. + fd_set readWorkSet = *readSet; + #if defined(TEST) || defined(INFO) *logofs << "Agent: proxyCanRead() is " - << ((int) FD_ISSET(proxy -> getFd(), readSet) + << ((int) FD_ISSET(proxy -> getFd(), &readWorkSet) << ".n" << logofs_flush; #endif - return (FD_ISSET(proxy -> getFd(), readSet)); + return (FD_ISSET(proxy -> getFd(), &readWorkSet)); } int enqueueData(const char *data, const int size) const -- 1.7.9
patch applied... http://code.x2go.org/gitweb?p=nx-libs.git;a=commitdiff;h=655173ff215dde1a167193eafe29bfc955a19561I had to tweak the patch by hand so it could get applied fully. Not sure what went wrong, so I just place a reminder here to make sure patches apply against latest Git code well enough.
Mike -- DAS-NETZWERKTEAM mike gabriel, dorfstr. 27, 24245 barmissen fon: +49 (4302) 281418, fax: +49 (4302) 281419 GnuPG Key ID 0xB588399B mail: [email protected], http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb
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