hi I have changed SOCK_DGRAM to SOCK_STREAM and the module loaded correctly. The errno was 0 after listen. Anurag --- vaishali paisal <vaishalipaisal@xxxxxxxxxxxxxx> wrote: > > >See the article by Rubini. > > > >http://www.linux-mag.com/2000-12/gear_01.html. > > > > i tried to write a kernel module which creates a socket.Binds to a port and > listens on that .But the code gives me the following error when i try to > insmod it. > > error :-95<3> > socket.o: init_module: Operation not permitted > Hint: insmod errors can be caused by incorrect module parameters, including > invalid IO or IRQ parameters. > You may find more information in syslog or the output from dmesg > > > following is the code > > ----------------------------------------------------------- > #include<linux/module.h> > #include<linux/byteorder/generic.h> > #include<linux/kernel.h> > #include<linux/init.h> > #include<linux/sched.h> > #include<linux/timer.h> > #include<linux/slab.h> > #include<linux/list.h> > #include <linux/net.h> > #include <linux/version.h> > #include <linux/smp_lock.h> > #include <net/sock.h>//contains sockaddr_in > #include <linux/config.h> > #define PORT 9090 > int time_init(void) > { > int error; > struct socket*sock; > struct sockaddr_in sin; > > > error=sock_create(PF_INET,SOCK_DGRAM,0,&sock); > if(error<0) > { > printk("\n error while creating socket"); > return -1; > } > sin.sin_family=AF_INET; > sin.sin_port=htonl((unsigned short)PORT); > sin.sin_addr.s_addr=INADDR_ANY; > error=sock->ops->bind(sock,(struct sockaddr*)&sin,sizeof(sin)); > if(error<0) > { > printk(KERN_ERR"\nCan't bind to port 80"); > return -1; > } > error=sock->ops->listen(sock,5); > printk("\n error :%d",error); > if(error<0) > { > printk(KERN_ERR"\n Can't listen "); > return -1; > } > > > return 0; > } > void time_cleanup(void) > { > printk(KERN_INFO "\nsocket module unloaded\n"); > } > module_init(time_init); > module_exit(time_cleanup); > MODULE_LICENSE("GPL"); > -------------------------------------------------------- > > Can anyone suggest what is happening.I think its unable ti listen on that > port .But why???????? > > Regards > vaishali > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
