其实看看textsearch.c你就清楚了....
#include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h>
#include <linux/types.h> #include <linux/string.h> #include <linux/init.h> #include <linux/rcupdate.h> #include <linux/err.h> #include <linux/textsearch.h>
static int o_search() { int pos; long err; struct ts_config *conf; struct ts_state state; const char *pattern = "chicken"; const char *example = "We dance the funky chicken";
conf = textsearch_prepare("kmp", pattern, strlen(pattern),GFP_KERNEL, TS_AUTOLOAD); if (IS_ERR(conf)) { err = PTR_ERR(conf); goto errout; }
pos = textsearch_find_continuous(conf, &state, example, strlen(example)); if (pos != UINT_MAX) printk("Oh my god, dancing chickens at %d\n", pos); textsearch_destroy(conf); errout: ERR_PTR(err); return 0; }
static int __init search_init(void) { printk("%s\n", "search insmod"); o_search(); return 0; }
static void __exit search_cleanup(void) { printk("%s\n", "search rmmod"); }
module_init(search_init); module_exit(search_cleanup);
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如果是bm的话
conf = textsearch_prepare("kmp", pattern, strlen(pattern),GFP_KERNEL, TS_AUTOLOAD);
就可以了
以后内核查找字符串就easy了!!!
原来直接就有api!!!注意这个可不能在用户态使用
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