JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_read(JNIEnv * env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit) {
void *buffer = (*env)->GetDirectBufferAddress(env, jbuffer);
if (buffer == NULL) {
throwRuntimeException(env, "Unable to access address of buffer");
return -1;
}
return read0(env, clazz, fd, buffer, pos, limit);
}
void com_gw(int in)
{
fd_set fds;
int n, fdsbits;
static struct timeval tout = { TIMEOUT, 0 };
unsigned char buf[MBUFSIZ];
alarm(0);
fdsbits = in + 1;
while (1)
{
FD_ZERO(& fds);
FD_SET (in, &fds);
FD_SET (0 , &fds);
FD_SET (1 , &fds);
tout.tv_sec = TIMEOUT;
tout.tv_usec = 0;
if ((n = select(fdsbits, &fds, NULL, NULL, &tout)) > 0)
{
if (FD_ISSET(in, &fds))
{
if ((n = read(in, buf, sizeof buf)) > 0)
{
if (write1(buf, n) < 0) goto bad;
}
else
goto bad;
}
if (FD_ISSET(0, &fds))
{
if ((n = read0(buf, sizeof buf)) > 0)
{
if (write(in, buf, n) < 0) goto bad;
}
else goto bad;
}
}
else goto bad;
}
bad: ;
}
/* Get a command from the client.
* If a command is received, returns 1,
* otherwise return 0.
*/
int get_command(struct vtcmd *v)
{
int i,loc;
char ch,bootbuf[40];
sum0 = 0;
sum1 = 0;
/* Get a valid command from the client */
read0(portfd, &v->hdr1, 1);
/* Send down the bootstrap code to ODT if we see an @ sign */
if ((havesentbootcode==0) && (v->hdr1 == '@')) {
writeC(ttyfd,&v->hdr1,1);
for (i=0,loc=BOOTSTART;i<(sizeof(bootcode)/sizeof(int));i++,loc+=2) {
sprintf(bootbuf, "%06o/", loc);
writeP(portfd, bootbuf, strlen(bootbuf));
/* wait for current value to print */
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch==' ') break; }
sprintf(bootbuf, "%06o\r", bootcode[i]);
writeP(portfd, bootbuf, strlen(bootbuf));
/* and suck up any characters sent from ODT */
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch=='@') break; }
}
sprintf(bootbuf, "r6/", loc);
writeP(portfd, bootbuf, strlen(bootbuf));
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch==' ') break; }
sprintf(bootbuf, "%06o\r", BOOTSTACK);
writeP(portfd, bootbuf, strlen(bootbuf));
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch=='@') break; }
sprintf(bootbuf, "r7/", loc);
writeP(portfd, bootbuf, strlen(bootbuf));
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch==' ') break; }
sprintf(bootbuf, "%06o\r", BOOTSTART);
writeP(portfd, bootbuf, strlen(bootbuf));
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch=='@') break; }
sprintf(bootbuf, "rs/", loc);
writeP(portfd, bootbuf, strlen(bootbuf));
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch==' ') break; }
sprintf(bootbuf, "%06o\r", 000340);
writeP(portfd, bootbuf, strlen(bootbuf));
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch=='@') break; }
sprintf(bootbuf, "p");
writeP(portfd, bootbuf, strlen(bootbuf));
while (1) { readP(portfd, &ch, 1); writeC(ttyfd,&ch,1); if (ch=='p') break; }
havesentbootcode=1; return(0);
}
if (v->hdr1 != VT_HDR1) { v->hdr1&= 127; writeC(1,&v->hdr1, 1); return(0); }
read1(portfd, &v->hdr2, 1);
if (v->hdr2 != VT_HDR2) { v->hdr1&= 127; writeC(1,&v->hdr1, 1); v->hdr2&= 127; writeC(1,&v->hdr2, 1); return(0); }
read0(portfd, &v->cmd, 1); read1(portfd, &v->record, 1);
read0(portfd, &v->blklo, 1); read1(portfd, &v->blkhi, 1);
block = v->blkhi<<8&0xff00 | v->blklo&0xff;
if(block>=0xff00)
{
unsigned char tmp0,tmp1;
read0(portfd, &tmp0, 1);
read1(portfd, &tmp1, 1);
block = tmp1<<16&0xff0000 | tmp0<<8&0xff00 | v->blklo&0xff;
}
/* All done if a quick read */
if (v->cmd == VTC_QUICK) return(1);
/* Retrieve the block if a WRITE cmd */
if (v->cmd == VTC_WRITE) {
for (i = 0; i < BLKSIZE; i++) {
read0(portfd, &inbuf[i], 1); i++;
read1(portfd, &inbuf[i], 1);
}
}
/* Get the checksum */
read0(portfd, &(v->sum0), 1);
read1(portfd, &(v->sum1), 1);
/* Try again on a bad checksum */
if (sum0 | sum1)
{ fputc('e',stderr); return(0); }
return(1);
}
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_readAddress(JNIEnv * env, jclass clazz, jint fd, jlong address, jint pos, jint limit) {
return read0(env, clazz, fd, (void*) address, pos, limit);
}
