linux kernel with param
浏览数：37 /
时间：2015年06月20日
Linux kernel support pass param to kernel, this params can be assigned at load time by insmod or modprobe. or later read from /etc/modprobe.conf file.
There are two macro : module_param and module_param_array,
To declare an param or array param ,use:
module_param(name, type, perm) module_param_array(name, type, num, perm)
name is the name of your param or array.
type can be : bool ,invbool,charp, int, long, short, uint, ulong, ushort
num is the array num , array param where the values are supplied as a comma-separated list.
perm : S_IRUGO , S_IWUSR and so on .
int num = 0; static char* array[10] = {NULL}; static int ntime = 0; static char* pstring = NULL; module_param_array(array, charp, &num, S_IRUGO); module_param(ntime, int, S_IRUGO); module_param(pstring, charp, S_IRUGO); static int __init init_func(void) { int i = 0; printk("string :%s, int :%d\n", pstring, ntime); printk("Array\n"); for(; i < num; ++i) printk("%s\n", array[i]); return 0; }
执行：
sudo insmod ./hello.ko array="hello,world" pstring="test" ntime=10
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