Reference signal.c int send_sig(int sig, struct task_struct *p, int priv) may be your need. 2009/2/3 jean-francois simon <jfs@xxxxxxxxxx>: > 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
