pidopt.c

来自「在SCO UNIX制定界面程序 可根据文件配制菜单,而不必修改源程序,非常方便」· C语言 代码 · 共 60 行

#include <stdio.h>
#include <errno.h>

/****************************
entry:	pid
return:	0	FOUND
	-1	NOT FOUND
*****************************/
test_pid( pid )
int	pid;
{
FILE	*fp;
char	buf[200];
char	tmp1[20],tmp2[20],tmp3[20],tmp4[20];
int	pid0;

	sprintf(buf,"ps -p %d | grep %d", pid, pid);

	if((fp=popen(buf,"r")) == NULL) return(-1);
	fscanf(fp,"%s%s%s%s",tmp1,tmp2,tmp3,tmp4);
	pclose(fp);
	
	pid0 = atoi(tmp1);
	if( pid0 != pid ) return(-1);
	
	return(0);
}

/****************************
entry:	pid
return:	0	FOUND
	-1	NOT FOUND
*****************************/
/*

*****get_pid(filename,pid)
char	*filename;
int	*pid;
{
FILE	*fp;
int	len;
char	buf[200];
char	tmp1[20],tmp2[20],tmp3[20],tmp4[20];

	sprintf(buf,"ps -e | grep %8.8s",filename);

	if((fp=popen(buf,"r")) == NULL) return(-1);
	
	fscanf(fp,"%s%s%s%s",tmp1,tmp2,tmp3,tmp4);
	pclose(fp);
	
	*pid = atoi(tmp1);
	len = strlen(tmp4);
	if(len < 3) return(-1);
	if(strncmp(tmp4,filename,len)) return(-1);
	return(0);
}

*/