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1. modprobe ¼ÓÔØÄÚºËÄ£¿é
a) ÔÚ /etc/module.conf ÖвéÕÒ±ðÃû
b) ÔÚ lib/modules/version/module.dep ÖÐÅжÏÊÇ·ñÓÐÒÀÀµÄ£¿éÐèÒª±»Ìáǰ¼ÓÔØ£¨¸ÃÎļþ±»depmod-a½¨Á¢£©
2. 2.4ÄÚºËÖв»Ò»¶¨·ÇÓÃinit_moduleºÍcleanup_module×ö¿ªÊ¼ºÍ½áÊøµÄº¯Êý£¬µ«ÐèÒªÓÃmodule_initºÍ
module_exitÉêÃ÷¡£
3. ºê __init ºÍ __exit ¿ÉÒÔʹº¯ÊýÔÚÔËÐÐÍê³Éºó×Ô¶¯»ØÊÕÄڴ棨ÏÞÄ£¿éÖУ©£¬__initdataÓÃÓÚ±äÁ¿£¬
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#include //ÐèÒª°üº¬µÄÍ·Îļþ
static int ntest __initdata = 3;
static int __init test_init(void) {...}
static void __exit test_exit(void) {...}
module_init(test_init); //ÉêÃ÷·ÅÔÚʵÏÖº¯Êýºó
module_exit(test_exit);
4. һЩģ¿é˵Ã÷µÄÏà¹Øºê£¬¿ÉÒÔÓÃobjdump¿ÉÒԲ鿴Ïà¹ØÐÅÏ¢¡£
MODULE_LICENSE() ˵Ã÷´úÂëÐí¿ÉÀàÐÍ
MODULE_DESCRIPTION() Ä£¿éÃèÊö
MODULE_AUTHOR() ×÷Õß
MODULE_SUPPORTED_DEVICE() Ä£¿éÖ§³ÖµÄÉ豸
5. ²ÎÊý´«µÝʹÓúê MODULE_PARM(±äÁ¿Ãû,ÀàÐÍ)¡£
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static int myint = 9;
static char *mystr = "test"; //×¢ÒâÐèÒª´«µÝ²ÎÊýµÄĬÈÏÖµ
MODULE_PARM(myint, "i");
MODULE_PARM(mystr, "s");
6. ¶à¸öÎļþ±àÒë³ÉÒ»¸öÄÚºËÄ£¿é£º
a) ÐèÒªÔÚÒ»¸öÔ´³ÌÐòÖмÓÈë
#define __NO_VERSION__
#include
b) ±àÒëͬÆÕͨµÄµ¥¸öÄÚºËÎļþ
c) Á¬½Ó£ºld -m elf_i386 -r -o <1st src file.o> <2nd src file.o>
7. strace ²éÒ»¸ö³ÌÐòËùÓõ½µÄϵͳµ÷ÓÃ
8. ¹ØÓÚfile_operations½á¹¹Ì嶨ÒåÔÚlinux/fs.hÎļþÖС£
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struct file_operations fops = {
read: device_read,
write: device_write,
open: device_open,
release: device_release
}
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struct file_operations fops = {
.read = device_read,
.write = device_write,
.open = device_open,
.release = device_release
}
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[root@localhost ~]# fdisk -l
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[root@localhost ~]# fdisk /dev/sdj
The number of cylinders for this disk is set to 13054.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with ......
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ÃüÁî#rpm –q nfs-utils portmap
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