how about kill_proc: like in kill_proc(pid, SIGUSR1, 1); for example. -jfs Paraneetharan Chandrasekaran wrote: > Hi, > You can write a netlink socket interface between your char > driver and userspace program. User space program can be made to wait in > "recvfrom" system call. Whenever even number comes in "i", a netlink > messages can be send to user space program. > > -- Paraneetharan C > > 2009/2/3 Sandeep K Sinha <sandeepksinha@xxxxxxxxx > <mailto:sandeepksinha@xxxxxxxxx>> > > On Tue, Feb 3, 2009 at 6:59 AM, Pei Lin <telent997@xxxxxxxxx > <mailto:telent997@xxxxxxxxx>> wrote: > > why not use copy_from_user and copy_to_user? > > > > DIdn't understand what you meant, but the question is regarding a > signal not data? > Am I missing something ??? > > > 2009/2/1 Sandeep K Sinha <sandeepksinha@xxxxxxxxx > <mailto:sandeepksinha@xxxxxxxxx>>: > >> Write a daemon in userspace which runs in background and continuously > >> send ioctl's to your driver and gets the value of i. > >> If the value of i becomes even, you can write your desired code. > >> > >> Is this what you wanted ? > >> > >> On Sat, Jan 31, 2009 at 2:53 PM, rishi agrawal > <postrishi@xxxxxxxxx <mailto:postrishi@xxxxxxxxx>> wrote: > >>> Hello Everyone, > >>> > >>> I have a char device which when gets ioctl case 'a' starts a > for loop with > >>> index ' i '. > >>> > >>> I want to send the value of index ' i ' to user space whenever ' > i ' is > >>> even. > >>> > >>> I want some thing like the kernel space code of char device > should send a > >>> variable and also a 'signal' that it has send a value. > >>> > >>> How can it be done ? > >>> > >>> Its something like Pipes > >>> > >>> -- > >>> Regards, > >>> Rishi B. Agrawal > >>> > >>> > >> > >> > >> > >> -- > >> Regards, > >> Sandeep. > >> > >> > >> > >> > >> > >> > >> "To learn is to change. Education is a process that changes the > learner." > >> > >> -- > >> To unsubscribe from this list: send an email with > >> "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx > <mailto:ecartis@xxxxxxxxxxxx> > >> Please read the FAQ at http://kernelnewbies.org/FAQ > >> > >> > > > > > > -- > Regards, > Sandeep. > > > > > > > "To learn is to change. Education is a process that changes the > learner." > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx > <mailto:ecartis@xxxxxxxxxxxx> > Please read the FAQ at http://kernelnewbies.org/FAQ > > -- Best regards, _______________________________________ jean-francois simon - themis computer 5, rue irene joliot curie 38320 eybens - france +33 (0)4 76 14 77 85 - www.themis.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
