> -----Original Message----- > From: [email protected] [mailto:kernelnewbies- > [email protected]] On Behalf Of Kevin Wilson > Sent: Monday, November 17, 2014 11:50 PM > To: [email protected] > Subject: Userspace agent crash and kernel module > > Hi, > I want to write a kernel module which interacts with a userspace daemon. > There are cases when the userspace daemon can terminate by some signals. > There are also cases where the userspace daemon can crash (in some > abnormal cases). Is there a way that the kernel module will be aware of such > userspace agent crash, in order to reset its state ? > > Regards, > Kevin
If your module provided an fd to user space I suppose you could leverage the os's attempt to close all open fds of a process when that process terminates. I believe a character driver's release callback will get called in this case. Not sure how reliable this would be though. Generally it does sound like an awkward way to manage a device. Jeff Haran _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
