Can you help us on the list here and explain why do you need to have a kernel-user interface as a UDP socket ??? Did you thought about a device ? using a device-type file in /dev ? Using /proc ? Transferring data using system calls ? Maybe adding a new one ? using ioctl ? Why UDP ? WHat's the special condition that compel you to use UDP ? "Usman S. Ansari" wrote: > > Hi, > > I am trying to use "sys_select" call from the kernel module. This call is > implemented in file linux/fs/select.c. I can also see this function called in > kernel code arch/i386/kernel/sys_i386.c. > > When I load my module, I get unresolved symbol sys_select.I am using Redhat 7.1 > (2.4.2-2). Can anybody explain how I can resolve this problem. (nm of kernel > boot file show this symbol). > > Reason for using this call. > > My kernel module is talking to userland process over the udp socket interface. > All this works fine. I have defines timers, so that if user level program is > not running, timer expires and wait on sock_recvmsg is interrupted, (i.e. do > not wait for ever if user process is not running). The problem with this > approach is that, system can be slow for whatever reason, I can receve data > over sock_recvmsg call and before I del_timer, timer can pop and send sigterm > and kill my other userlevel program (which invokes kernel module via ioctl > call, there are two userlevel programs, one does socket and other does ioctl). > > Your help is appreciated. > > __________________________________________________ > Terrorist Attacks on U.S. - How can you help? > Donate cash, emergency relief information > http://dailynews.yahoo.com/fc/US/Emergency_Information/ > - > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > IRC Channel: irc.openprojects.net / #kernelnewbies > Web Page: http://www.kernelnewbies.org/ - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
