static void signalsetup(void)
{
struct vt_mode vtm;
vtm.mode = VT_PROCESS;
vtm.waitv = 0;
vtm.relsig = SIGUSR1;
vtm.acqsig = SIGUSR2;
vtm.frsig = 0;
signalregister();
ioctl(0, VT_SETMODE, &vtm);
}
static void signalreceived(int n)
{
if (exitit)
return;
/* racy, new signals may arrive before re-registeration */
signalregister();
switch (n) {
case SIGUSR1:
hidden = 1;
switchterm(cterm(), cterm(), 0, 1, 0);
ioctl(0, VT_RELDISP, 1);
break;
case SIGUSR2:
hidden = 0;
fb_cmap();
switchterm(cterm(), cterm(), 1, 0, 1);
break;
case SIGCHLD:
while (waitpid(-1, NULL, WNOHANG) > 0)
;
break;
}
}
int main(int argc, char *argv[])
{
FD_ZERO(&readset) ;
popenFunc(); //incoming connections
keyboardFunc();
pipeFunc();t
fifoFunc();
signalregister();
struct sockaddr_in sAddr;
int sfd;
int nsfd;
char buffer[25];
int result;
int nread;
int x;
int val;
sfd = socket(AF_INET, SOCK_STREAM,IPPROTO_TCP);
val = 1;
result = setsockopt(sfd,SOL_SOCKET, SO_REUSEADDR, &val,sizeof(val));
if (result < 0) {
perror("server1");
return 0;
}
sAddr.sin_family = AF_INET;
sAddr.sin_port = htons(8898);
sAddr.sin_addr.s_addr = INADDR_ANY;
result = bind(sfd, (struct sockaddr*) &sAddr, sizeof(sAddr));
if (result < 0) {
perror("server1");
return 0;
}
result = listen(sfd, 5);
if (result < 0) {
perror("server1");
return 0;
}
FD_SET(sfd, &readset);
while (1)
{
testset = readset;
result = select(FD_SETSIZE, &testset,NULL, NULL, NULL);
if (result < 1) {
perror("server1");
return 0;
}
for (x = 0; x < FD_SETSIZE; x++)
{
if (FD_ISSET(x, &testset))
{
if (x == sfd)
{
nsfd = accept(sfd, NULL,NULL);
FD_SET(nsfd, &readset);
}
else if(x==0 || x==pnrfd ||x==ffd || x==popenfd)
{
nread=read(0,buffer,sizeof(buffer));
if(nread<=0)
{
nread=read(pfd,buffer,sizeof(buffer));
if(nread<=0)
{
nread=read(ffd,buffer,sizeof(buffer));
if(nread<=0)
{
nread=read(popenfd,buffer,sizeof(buffer));
}
}
}
for(i=0;i<nsfd_count;i++)
{
send(nsfdarr[i],buffer,sizeof(buffer));
}
}
else
{
nread = recv(x, buffer, 25, 0);
if (nread <= 0)
{
close(x);
FD_CLR(x, &readset);
printf("client on descriptor #%i disconnected\n", x);
}
else
{
buffer[nread] = '\0';
printf("%s\n", buffer);
send(x, buffer, nread, 0);
}
}
}
}
}
}
