On 11/18/2010 02:55 AM, Daniel P. Berrange wrote: > On Wed, Nov 17, 2010 at 09:29:00PM -0700, Eric Blake wrote: >> From: Daniel P. Berrange <[email protected]> >> >> This introduces a new set of APIs in src/util/command.h >> to use for invoking commands. This is intended to replace >> all current usage of virRun and virExec variants, with a >> more flexible and less error prone API. >> > > > My code forgot to ever close() the fds in cmd->preserve. We definitely > need todo it in virCommandFree(), but there's a small argument to say > we should also do it in virCommandRun/virCommandRunAsync so that if > the caller keeps the virCommandPtr alive for a long time, we don't > have the open FDs.
I'll look into this more. > > It would also be useful to have a generic API for logging info about > the command to an FD (to let us remove that logging code from UML > and QEMU & LXC drivers). > > eg > > +void virCommandWriteArgLog(virCommandPtr cmd, int logfd) Would this be called before virCommandRun and do the logging immediately at that point (or, if something has gone wrong such as allocation failure, then nothing is logged, and the user will eventually learn that nothing was logged when virCommandRun fails), or is it something where you call it once to register the logfd, then calling virCommandRun is what actually writes to the registered fd at the time the child is actually spawned? -- Eric Blake [email protected] +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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