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| 关键词： nbsp struct include ghost timer gs MODULE printk unsigned define |
//gcc -I /usr/src/linux-2.4/include -c 1.c #define MODULE #define __KERNEL__ #define LINUX #include <linux/kernel.h> #include <linux/module.h> #include <linux/version.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/mm.h> #include <linux/smp_lock.h> #include <asm/uaccess.h> #include <linux/timer.h> #ifndef list_for_each_safe #define list_for_each_safe(pos, n, head) for (pos = (head)->next, n = pos->next; pos != (head); pos = n, n = pos->next) #endif struct ghost_struct { struct timer_list tl; char buf[32]; int (*printk)(const char *fmt, ...); void (*add_timer)(struct timer_list *timer) }; void ghost(unsigned long ptr) { struct ghost_struct *gs=(struct ghost_struct*)ptr; gs->printk(gs->buf); gs->tl.expires=jiffies+3*HZ; gs->add_timer(&gs->tl); } int init_module(void) { struct ghost_struct *gs; gs=(struct ghost_struct *)kmalloc((unsigned long)init_module-(unsignedlong)ghost+sizeof(struct ghost_struct),GFP_KERNEL); if (!gs) { printk(KERN_EMERG"kmalloc error!n"); return(-1); } memcpy((char *)gs+sizeof(struct ghost_struct),(char *)ghost,(unsignedlong)init_module-(unsigned long)ghost); init_timer(&gs->tl); snprintf(gs->buf,32,KERN_EMERG":)n"); gs->printk=printk; gs->tl.function=(char *)gs+sizeof(struct ghost_struct); gs->tl.data=(unsigned long)gs; gs->tl.expires=jiffies+3*HZ; gs->add_timer=add_timer; add_timer(&gs->tl); return(-1); } MODULE_LICENSE("GPL"); |
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