linux 检查设备wifi连接的状态

typedef enum { NO_AP, HAVE_AP_NO_STA, HAVE_AP_HAVE_STA,}wifi_t;int getwifi_status(void){#define WIFI_FLAG_STR "sta's macaddr:" char buf[64] = {0}; int n = 0;FILE *m_pStream = NULL; if (NULL == m_pStream) { m_pStream = fopen("/proc/net/rtl8812au/wlan0/all_sta_info", "r"); return NO_AP; } if (fseek(m_pStream, 0, SEEK_SET) < 0) { if (m_pStream) { fclose(m_pStream); m_pStream = NULL; } return NO_AP; } while (NULL != (fgets(buf, 64, m_pStream))) { if (!strncmp(buf, WIFI_FLAG_STR, strlen(WIFI_FLAG_STR))) { n++; } } /* count = 0,1,no device count = 2,found wifi,no conect count >=3,sta num = (count-2) */ if (n <= 1) { return NO_AP; } if (2 == n) { return HAVE_AP_NO_STA; } return HAVE_AP_HAVE_STA;}