解决读文件不存在时报段错误

Makefile

 cc  = gcc 
-cflags = -lmosquitto -lpthread -ldl
-
+cflags = -Wall -lmosquitto -lpthread -ldl -I /root/x86/mqtt_install/root/x86/mqtt_install/include -L /root/x86/mqtt_install/root/x86/mqtt_install/lib
 main:
 	$(cc) server-monitor.c -o server-monitor $(cflags)
 	

server-monitor.c

     }
 
     /* 硬盘温度获取 */
-    if (get_sata_hddtemp(device, &hdd_temp) < 0)
-    {
-        hdd_temp = 0;
-        exit(-1);
-    }
+    get_sata_hddtemp(device, &hdd_temp);
 
     //初始化lib库函数
     mosquitto_lib_init();
         sleep(5);
         /* cpu温度获取 */
         fp = fopen (CPU_TEMP_FILE1, "r");
-        if (fp < 0)
+        if (NULL == fp)
         {
             printf("open file failed,%s\n", strerror(errno));
-            continue;
         }
-        // rewind(fp);
-        fscanf(fp, "%d", &cpu_temp);
-        fclose(fp);
-
+	else
+	{
+		 // rewind(fp);
+ 	         fscanf(fp, "%d", &cpu_temp);
+        	 fclose(fp);
+	}
+        
         /* 硬盘温度获取 */
-        if (get_sata_hddtemp(device, &hdd_temp) < 0)
-        {
-            hdd_temp = 0;
-        }
+	get_sata_hddtemp(device, &hdd_temp);
 
         /* 发送mqtt消息到服务器 */
         sprintf(content, "{\"cpu_temp\" : \"%d\", \"hdd_temp\" : \"%d\", \"cpu_rate\" : \"%0.2f\", \"mem_rate\" : \"%0.2f\"}", 
     }
     */
 
-
     int fd = 0;
     fd = open(device, O_RDONLY | O_NONBLOCK);