Messages in this thread | | | From | Denis Vlasenko <> | Subject | Re: Read from file fails | Date | Wed, 5 May 2004 13:54:43 +0300 |
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On Wednesday 05 May 2004 13:19, Libor Vanek wrote: > > Libor Vanek wrote: > > >OK - how can I "notify" userspace process? Signals are "weak" - I need > > > to send some data (filename etc.) to process. One solution is "on this > > > signal call this syscall and result of this syscall will be data you > > > need" - but I'd prefer to handle this in one "action". > > > > My first thoughts are to make it a blocking call. > > You mean like: > - send signal to user-space process > - wait until user-space process pick ups data (filename etc.), creates copy > of file (or whatever) and calls another system call that he's finished - > let kernel to continue syscall I blocked > ?
I think he meant that userspace daemon should do a blocking syscall (a read for example). When that returns, daemon knows he has something to do. -- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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