封装 fork wait execvp, 编写函数 process_create

利用回调函数封装fork wait execvp 等函数, 编写一个progress_create函数

#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>

int process_create(int(*func)(), const char *file, char *argv[])
{
    int ret = ;
    pid_t pid = fork();
    if(pid == )
    {
        //子进程
        ret = func(file, argv);
        if(ret == -)
        {
            printf("调用execvp失败\n");
            perror("func");
            _exit(-);
        }

    }
    else
    {
        int st;
        pid_t ret = wait(&st);
        if(ret == -)
        {
            perror("wait");
            exit(-);
        }
    }
    return ;
}

int main()
{
    char *argv1[] = {"ls"};
    char *argv2[] = {"ls", "-al", "/etc/passwd", };
    process_create(execvp, *argv1, argv2);
    return ;
}