ʵսLinux Bluetooth±à³Ì(Áù) L2CAP±à³ÌʵÀý
ÀýÒ»£º·¢ËÍSignaling Packet£º
Signaling CommandÊÇ2¸öBluetoothʵÌåÖ®¼äµÄL2CAP²ãÃüÁî´«Êä¡£ËùÒÔµÃSignaling CommandʹÓÃCID 0x0001.
¶à¸öCommand¿ÉÒÔÔÚÒ»¸öC-frame£¨control frame£©Öз¢ËÍ¡£
Èç¹ûÒªÖ±½Ó·¢ËÍSignaling Command.ÐèÒª½¨Á¢SOCK_RAWÀàÐ͵ÄL2CAPÁ¬½ÓSocket¡£ÕâÑù²ÅÓлú»á×Ô¼ºÌî³äCommand Code£¬IdentifierµÈ¡£
ÒÔÏÂÊÇÒ»¸ö·¢ËÍsignaling CommandÒÔ¼°½ÓÊÕResponseµÄ¼òµ¥Àý×Ó£º
int main(int argc, char** argv)
{
int l2_sck = 0;
int iRel = 0;
struct sockaddr_l2 local_l2_addr;
struct sockaddr_l2 remote_l2_addr;
char str[24] ={0};
int len = 0;
int size = 50;
char* send_buf;
char* recv_buf;
int i = 0;
int id = 1; //²»ÒªÎª0
send_buf = malloc(L2CAP_CMD_HDR_SIZE + size);
recv_buf = malloc(L2CAP_CMD_HDR_SIZE + size);
if(argc < 2)
{
printf("\n%s <bdaddr>\n", argv[0]);
exit(0);
}
// create l2cap raw socket
l2_sck = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_L2CAP); //´´½¨L2CAP protocolµÄRAW Packet
if(l2_sck < 0)
{
perror("\nsocket:");
return -1;
}
//bind
memset(&local_l2_addr, 0, sizeof(struct sockaddr_l2));
local_l2_addr.l2_family = PF_BLUETOOTH;
bacpy(&local_l2_addr.l2_bdaddr , BDADDR_ANY);
iRel = bind(l2_sck, (struct sockaddr*) &local_l2_addr, sizeof(struct sockaddr_l2));
if(iRel < 0)
{
perror("\nbind()");
exit(0);
}
//connect
memset(&remote_l2_addr, 0 , sizeof(struct sockaddr_l2));
remote_l2_addr.l2_family = PF_BLUETOOTH;
//printf("\nConnect to %s\n", argv[1]);
str2ba(argv[1], &remote_l2_addr.l2_bdaddr);
iRel = connect(l2_sck, (struct sockaddr*)&remote_l2_addr, sizeof(struct sockaddr_l2));
if(iRel < 0)
{
perror("\nconnect()");
exit(0);
}
//get local bda
Ïà¹ØÎĵµ£º
ÓÐÁ½ÖÖÉèÖû·¾³±äÁ¿ PATH µÄ·½·¨¡£µÚÒ»ÖÖÊÊÓÃÓÚΪµ¥Ò»Óû§ÉèÖà PATH£¬µÚ¶þÖÖÊÇΪȫ¾ÖÉèÖà PATH¡£
1.ÔÚÓû§Ö÷Ŀ¼ÏÂÓÐÒ»¸ö .bashrc Îļþ£¬¿ÉÒÔÔÚ´ËÎļþÖмÓÈë PATH µÄÉèÖÃÈçÏ£º
export PATH=”$PATH:/your path1/:/your path2/…..”
×¢Ò⣺ÿһ¸ö path Ö®¼äÒªÓà “:“ ·Ö¸ô¡£
× ......
ÔÚÓ¦ÓóÌÐò¿ª·¢Ê±£¬Ò²¾³£ÐèÒªÈçϵĶ¨Ê±Æ÷. ÕâÀï¶Ô¶¨Ê±Æ÷×öÁËÒ»¸öÓÅ»¯£¬¾ÍÊÇÔÚ²åÈë¶ÓÁÐÖÐʱ½øÐÐÁËÒ»´ÎÅÅÐò£¬Ê¹µÃ¼ì²âʱ²»ÐèÒª±éÀúÕû¸öÁ´±í£¬Ö»Ðè°ÑÅÅÔÚÇ°ÃæµÄ¼¸¸öµ½Ê±µÄÈÎÎñÈ¡³öÀ´¾Í¿ÉÒÔÁË¡£
static struct timer_list {
long jiffies;
void (*fn)();
......
tar vxfz ttt-1.00.tar.bz2ºó³öÏÖÒÔÉÏ´íÎóÊÇÔõô»ØÊ°¡£¿
gzip:stdin:not in gzip format
tar:Child returned status1
tar:Error exit delayed from prvious errors
tar jxvf busybox-1.00.tar.bz2
½âѹ£ºtar jxvf FileName.tar.bz2
ѹËõ£ºtar jcvf FileName.tar.bz2 DirName
bz2¸ñʽÓÃj
gz¸ñʽÓÃz
cÊÇ´´½¨
......
×î½üÒ»¸öÏîÄ¿µÄϵͳÓõÄÊÇSolaris 10£¬ËäÈ»ÒÔÇ°ÓõĶ¼ÊÇ Linuxϵͳ£¬µ«ÊÇLinuxϵͳÖеÄһЩÃüÁîºÍSolarisϵͳÊÇͨÓõģ¬ÎªÁË·½±ãÎÒÏÖÔÚÁгö²¿·Ö£¬ÒÔºó½Ðø¸üС£
¡¡1£© ²é¿´¿ª·Å¶Ë¿Ú
¡¡
¡¡¡¡Linux£º netstat -atn
¡¡
¡¡¡¡Solaris£º netstat -P tcp -f inet -an
¡¡
¡¡¡¡2£© ²é¿´Íø¿¨/ÍøÂç״̬
¡¡
¡¡¡¡ ......
Linux²»ÐèÒª´ÅÅÌËéƬÕûÀí¡£
ÒÔÏÂÒý×Ôlinux¹Ù·½ÍøÕ¾¶ÔËéƬµÄ½â˵£ºÀ´Ô´ÓÚ
http://www.linux.org/docs/ldp/howto/Partition/appendix.html#fragmentation
ÒýÓÃ:
10.4. Some facts about file systems and fragmentation
Disk
space is administered by the operating system in units of ......