void
test_readv()
{
char buf0[2];
char buf1[3];
char buf2[4];
struct iovec my_iovec[3];
ssize_t bytes_read;
char *ptmpfile = "tmp123.txt";
int fd;
my_iovec[0].iov_base = buf0;
my_iovec[0].iov_len= sizeof(buf0);
my_iovec[1].iov_base = buf1;
my_iovec[1].iov_len = sizeof(buf1);
my_iovec[2].iov_base = buf2;
my_iovec[2].iov_len = sizeof(buf2);
if((fd = create_file(ptmpfile)) < 0)
return;
printf("begin test readv:\n");
bytes_read = readv(fd, my_iovec, 3);/*这儿还有点问题，不晓得为什么总返回0*/
printf("\n\nbytes_read[%d]\n", bytes_read);
if(bytes_read < 0){
perror("readv");
}
dele_file(ptmpfile);
}
///递归遍历指定文件夹，并输出所有文件
void file_list(const char*fileName,int layer){
DIR *pRec = opendir(fileName);
if(pRec){
struct dirent *pDir;
while( (pDir = readdir(pRec)) ){
char path[PATH_MAX+1];
memset(path,'\0',PATH_MAX+1);
int len = strlen(fileName);//without '\0'
strncpy(path,fileName,len);
strcat(path,"/");
strcat(path,pDir->d_name);
//1 表示是目录，0表示是文件
int type = get_file_type(path);
if(type){
//当不是.和..时才进入下一级目录
if(strcmp(pDir->d_name,".") && strcmp(pDir->d_name,"..")){
//show_file(pDir->d_name,layer);
file_list(path,++layer);
}else{
//printf("test:%s\n",pDir->d_name);
//show_file(pDir->d_name,layer);
}
}else{
//show_file(pDir->d_name,layer);
//直接删除文件
dele_file(path);
}
}
//此时文件夹中的文件已经全部被删除
dele_dir(fileName);
}else{
//show_file(fileName,--layer);
// Since file_suc is not equal to zero that means the specify path
// is legal.
if(!file_suc){
printf("Specify path is illegal,please check again.\n");
}
}
}