//get the dentry and vfsmnt read_lock(&fs->lock); pwd = dget(fs->pwd); vfsmnt = mntget(fs->pwdmnt); read_unlock(&fs->lock); //get the path start = d_path(pwd,vfsmnt,path,PATH_MAX); strcat(fullpath,start); strcat(fullpath,"/"); strcat(fullpath,filename); kfree(path)...
. 用户态multipathd检查到设备状态异常 multipathd\main.c -> main (int argc, char *argv[]) pthread_create(&check_thr, &misc_attr, checkerloop, vecs) check_path (struct vectors * vecs, struct path * pp, unsigned int ticks) conf = get_multipath_config() newstate = path_offline(pp) ...
在泄漏后,现在的目标是将modprobe_path覆盖为我们可以控制的文件的路径。在大多数Linux系统中,我们可以以任意用户的身份自由地读写/tmp目录,因此我将使用上述三个小工具将modprobe_path覆盖到名为/tmp/x的文件中,然后在经过kpti_trampoline后,安全地返回到用户空间中的函数get_flag()。 voidoverflow(void){unsignedn...
//get the dentry and vfsmnt read_lock(&fs->lock); pwd = dget(fs->pwd); vfsmnt = mntget(fs->pwdmnt); read_unlock(&fs->lock); //get the path start = d_path(pwd,vfsmnt,path,PATH_MAX); strcat(fullpath,start); strcat(fullpath,"/"); strcat(fullpath,filename); kfree(path)...