httplog.c

来自「http协议的服务器例程」· C语言 代码 · 共 34 行

#include "httplog.h"

int httplog(void)
{
	FILE *fp;
	int pip[2];
	char buff[10];
	pid_t pid;
	pipe(pip);
	pid = fork();
	if(pid < 0)
	{
		return(-1);
	}
	else if(pid == 0)
	{
		close(pip[1]);
		wread(pip[0], &pid, sizeof(pid_t));
		if((fp = fopen("/var/log/httpserver.log", "w+")) < 0)
		{
			return (-1);
		}
		sprintf(buff, "%d\n", pid);
		fputs(buff, fp);
		close(pip[0]);
		exit(0);
	}
	close(pip[0]);
	pid = getpid();
	wwrite(pip[1], &pid, sizeof(pid_t));
	close(pip[1]);
	return 0;
}