嵌入式

嵌入式设备中实现ping功能代码

2019-07-12 20:14发布

站内文章 / 嵌入式Linux
13745 0 952
Vfork出一个子进程，然后监控。
int NetPing(char *server_ip) { pid_t pid; int i = 0; int stat; const int loopCnt = 3; //ping 3 times while(i < loopCnt) { if((pid = vfork()) < 0) { RPT(RPT_ERR, "vfork error!"); return -1; } else if(pid == 0) { if( execlp("ping", "ping", "-c", "1","-W", "3", server_ip, (char *)0) < 0) { RPT(RPT_ERR, "execlp 'ping -c 1 %s' error!", server_ip); return -1; } } waitpid(pid , &stat, WUNTRACED); if (stat == 0) { RPT(RPT_INF, "ping successful pid=%d", pid); return 0; } else { RPT(RPT_ERR, "ping error!, can not connect to %s", server_ip); } mssleep(50); i++; } return -1; }
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