the error connection of socket in kernel(new)
In order to test the process of connection of socket in kernel ,I wrote a kld .
When i load the kld ,the code try to connect the server of ftp,but i foud the
code does not work right . the function , connect ,which return is right ,but
,when i see the status of connection by netstat -a , i found the connection
didn't establish! the detailed code is attached
the following code have mistake!! The platform is freebsd 5.3
/* create socket */
td=curthread;
sock.domain = AF_INET;
sock.type = SOCK_STREAM;
sock.protocol = 0;
st = socket(td, sock);
/* does create ok? */
if( st != 0 )
{ /* create error */
log(LOG_DEBUG,create socket error!\n);
goto main_shutdown;
}
printf(the fd of socket is%d\n,control_fd);
/* has create one ok socket */
printf(the socket is created!);
/
there are some mistake here
/*connect*/
bzero(sa_in, sizeof sa_in);
sa_in.sin_family = AF_INET;
/*this is port of ftp*/
sa_in.sin_port = htons(21);
/*this is my computer ip:172.19.11.8*/
sa_in.sin_addr.s_addr = htonl((172 8) | 19) 8) | 11) 8) |
48);
conn.s=control_fd ;
conn.name=(char*) sa_in;
conn.namelen=sizeof(sa_in);
/*why do not i connect the server of ftp*/
nError=connect(td,conn);
if (!nError){
printf(connect failed!);
goto main_shutdown;
} ;
printf(connect is secusess!);
-
DO YOU YAHOO!?
G ___
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Re: the error connection of socket in kernel(new)
On Tue, 31 May 2005, shiner chen wrote:
In order to test the process of connection of socket in kernel ,I wrote
a kld . When i load the kld ,the code try to connect the server of
ftp,but i foud the code does not work right . the function , connect
,which return is right ,but ,when i see the status of connection by
netstat -a , i found the connection didn't establish! the detailed
code is attached the following code have mistake!! The platform is
freebsd 5.3
/* create socket */
td=curthread;
sock.domain = AF_INET;
sock.type = SOCK_STREAM;
sock.protocol = 0;
st = socket(td, sock);
/* does create ok? */
if( st != 0 )
{ /* create error */
log(LOG_DEBUG,create socket error!\n);
goto main_shutdown;
}
printf(the fd of socket is%d\n,control_fd);
How do you initialize the value of control_fd? You need to load it out
of td-td_reval[0].
What thread is this running in?
/* has create one ok socket */
printf(the socket is created!);
/
there are some mistake here
/*connect*/
bzero(sa_in, sizeof sa_in);
sa_in.sin_family = AF_INET;
/*this is port of ftp*/
sa_in.sin_port = htons(21);
/*this is my computer ip:172.19.11.8*/
sa_in.sin_addr.s_addr = htonl((172 8) | 19) 8) | 11) 8) |
48);
conn.s=control_fd ;
conn.name=(char*) sa_in;
conn.namelen=sizeof(sa_in);
/*why do not i connect the server of ftp*/
nError=connect(td,conn);
if (!nError){
Shouldn't you check for nError != 0 here? If this is the real code,
it's probably the case that you're getting EBADF back because you didn't
set control_fd to the real file descriptor number.
Robert N M Watson
printf(connect failed!);
goto main_shutdown;
} ;
printf(connect is secusess!);
-
DO YOU YAHOO!?
ÑÅ»¢Ãâ·ÑGÓÊÏä£ÖйúµÚÒ»¾øÎÞÀ¬»øÓʼþɧÈų¬´óÓÊÏä
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Re: the error connection of socket in kernel(new)
On Tue, 31 May 2005, shiner chen wrote: sa_in.sin_port = htons(21); /*this is my computer ip:172.19.11.8*/ sa_in.sin_addr.s_addr = htonl((172 8) | 19) 8) | 11) 8) | 48); Can't help much with your question, but that last line quoted could be made much simpler (and less prone to errors) by using the inet_addr() function... half asleep at the moment... will re-look over your actual question later :) ~Neo-Vortex ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
