hi, I'm trying to dump some information from dev.c to user space file.Following is the code which i'm using to write to user spcae file.I'm using 2.6.22.x86_64 kernel.
#define _write(f, buf, sz) (f->f_op->write(f, buf, sz, &f->f_pos)) #define WRITABLE(f) (f->f_op && f->f_op->write) int write_to_file(char *logfile, char *buf,int size) { int ret = 0; struct file *f=NULL; mm_segment_t old_fs = get_fs(); set_fs(get_ds()); f = filp_open(logfile, O_CREAT|O_APPEND,00600); if(IS_ERR(f)){ DPRINT("Error %ld openeing %s\n",-PTR_ERR(f), logfile); ret = -1; } else { if (WRITABLE(f)) _write(f, buf, size); else { DPRINT("%s does not have a write method\n", logfile); ret = -1; } if ((ret = filp_close(f,NULL))) DPRINT("Error %d closing %s\n", -ret, logfile); } END_KMEM; return ret; } I'm calling this function from netif_recieve_skb in dev.c int netif_recieve_skb(struct sk_buff *skb){ --------------------- write_to_file("/root/kernel_log","hello_world",12); ---------------------- } But whenever this function is called ,the kernel simply halts.Please tell me what might be the reason. I just want to dump some information to user spcace file from dev.c .Is there some better way to do it. thanks, shahzad - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/