X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/9c08d6ce311692f6dad205a223476cf072825f9f..5260325f3150ad441f310d31239beeb765f716ed:/nchan.c

diff --git a/nchan.c b/nchan.c
index 227e52f7..97101e36 100644
--- a/nchan.c
+++ b/nchan.c
@@ -15,122 +15,131 @@ static void chan_shutdown_read(Channel *c);
 static void chan_delele_if_full_closed(Channel *c);
 
 /*
- * EVENTS: update channel input/output states
- *	   execute ACTIONS
+ * EVENTS update channel input/output states execute ACTIONS
  */
+
 /* events concerning the INPUT from socket for channel (istate) */
 void
-chan_rcvd_oclose(Channel *c){
-	switch(c->istate){
+chan_rcvd_oclose(Channel *c)
+{
+	switch (c->istate) {
 	case CHAN_INPUT_WAIT_OCLOSE:
 		debug("channel %d: INPUT_WAIT_OCLOSE -> INPUT_CLOSED [rcvd OCLOSE]", c->self);
-		c->istate=CHAN_INPUT_CLOSED;
+		c->istate = CHAN_INPUT_CLOSED;
 		chan_delele_if_full_closed(c);
 		break;
 	case CHAN_INPUT_OPEN:
 		debug("channel %d: INPUT_OPEN -> INPUT_CLOSED [rvcd OCLOSE, send IEOF]", c->self);
 		chan_shutdown_read(c);
 		chan_send_ieof(c);
-		c->istate=CHAN_INPUT_CLOSED;
+		c->istate = CHAN_INPUT_CLOSED;
 		chan_delele_if_full_closed(c);
 		break;
 	default:
-		debug("protocol error: chan_rcvd_oclose %d for istate %d",c->self,c->istate);
+		debug("protocol error: chan_rcvd_oclose %d for istate %d", c->self, c->istate);
 		break;
 	}
 }
 void
-chan_read_failed(Channel *c){
-	switch(c->istate){
+chan_read_failed(Channel *c)
+{
+	switch (c->istate) {
 	case CHAN_INPUT_OPEN:
 		debug("channel %d: INPUT_OPEN -> INPUT_WAIT_DRAIN [read failed]", c->self);
 		chan_shutdown_read(c);
-		c->istate=CHAN_INPUT_WAIT_DRAIN;
+		c->istate = CHAN_INPUT_WAIT_DRAIN;
 		break;
 	default:
 		debug("internal error: we do not read, but chan_read_failed %d for istate %d",
-			c->self,c->istate);
+		      c->self, c->istate);
 		break;
 	}
 }
 void
-chan_ibuf_empty(Channel *c){
-	if(buffer_len(&c->input)){
-		debug("internal error: chan_ibuf_empty %d for non empty buffer",c->self);
+chan_ibuf_empty(Channel *c)
+{
+	if (buffer_len(&c->input)) {
+		debug("internal error: chan_ibuf_empty %d for non empty buffer", c->self);
 		return;
 	}
-	switch(c->istate){
+	switch (c->istate) {
 	case CHAN_INPUT_WAIT_DRAIN:
 		debug("channel %d: INPUT_WAIT_DRAIN -> INPUT_WAIT_OCLOSE [inbuf empty, send IEOF]", c->self);
 		chan_send_ieof(c);
-		c->istate=CHAN_INPUT_WAIT_OCLOSE;
+		c->istate = CHAN_INPUT_WAIT_OCLOSE;
 		break;
 	default:
-		debug("internal error: chan_ibuf_empty %d for istate %d",c->self,c->istate);
+		debug("internal error: chan_ibuf_empty %d for istate %d", c->self, c->istate);
 		break;
 	}
 }
+
 /* events concerning the OUTPUT from channel for socket (ostate) */
 void
-chan_rcvd_ieof(Channel *c){
-	switch(c->ostate){
+chan_rcvd_ieof(Channel *c)
+{
+	switch (c->ostate) {
 	case CHAN_OUTPUT_OPEN:
 		debug("channel %d: OUTPUT_OPEN -> OUTPUT_WAIT_DRAIN [rvcd IEOF]", c->self);
-		c->ostate=CHAN_OUTPUT_WAIT_DRAIN;
+		c->ostate = CHAN_OUTPUT_WAIT_DRAIN;
 		break;
 	case CHAN_OUTPUT_WAIT_IEOF:
 		debug("channel %d: OUTPUT_WAIT_IEOF -> OUTPUT_CLOSED [rvcd IEOF]", c->self);
-		c->ostate=CHAN_OUTPUT_CLOSED;
+		c->ostate = CHAN_OUTPUT_CLOSED;
 		chan_delele_if_full_closed(c);
 		break;
 	default:
-		debug("protocol error: chan_rcvd_ieof %d for ostate %d", c->self,c->ostate);
+		debug("protocol error: chan_rcvd_ieof %d for ostate %d", c->self, c->ostate);
 		break;
 	}
 }
 void
-chan_write_failed(Channel *c){
-	switch(c->ostate){
+chan_write_failed(Channel *c)
+{
+	switch (c->ostate) {
 	case CHAN_OUTPUT_OPEN:
 		debug("channel %d: OUTPUT_OPEN -> OUTPUT_WAIT_IEOF [write failed]", c->self);
 		chan_send_oclose(c);
-		c->ostate=CHAN_OUTPUT_WAIT_IEOF;
+		c->ostate = CHAN_OUTPUT_WAIT_IEOF;
 		break;
 	case CHAN_OUTPUT_WAIT_DRAIN:
 		debug("channel %d: OUTPUT_WAIT_DRAIN -> OUTPUT_CLOSED [write failed]", c->self);
 		chan_send_oclose(c);
-		c->ostate=CHAN_OUTPUT_CLOSED;
+		c->ostate = CHAN_OUTPUT_CLOSED;
 		chan_delele_if_full_closed(c);
 		break;
 	default:
-		debug("internal error: chan_write_failed %d for ostate %d",c->self,c->ostate);
+		debug("internal error: chan_write_failed %d for ostate %d", c->self, c->ostate);
 		break;
 	}
 }
 void
-chan_obuf_empty(Channel *c){
-	if(buffer_len(&c->output)){
-		debug("internal error: chan_obuf_empty %d for non empty buffer",c->self);
+chan_obuf_empty(Channel *c)
+{
+	if (buffer_len(&c->output)) {
+		debug("internal error: chan_obuf_empty %d for non empty buffer", c->self);
 		return;
 	}
-	switch(c->ostate){
+	switch (c->ostate) {
 	case CHAN_OUTPUT_WAIT_DRAIN:
 		debug("channel %d: OUTPUT_WAIT_DRAIN -> OUTPUT_CLOSED [obuf empty, send OCLOSE]", c->self);
 		chan_send_oclose(c);
-		c->ostate=CHAN_OUTPUT_CLOSED;
+		c->ostate = CHAN_OUTPUT_CLOSED;
 		chan_delele_if_full_closed(c);
 		break;
 	default:
-		debug("internal error: chan_obuf_empty %d for ostate %d",c->self,c->ostate);
+		debug("internal error: chan_obuf_empty %d for ostate %d", c->self, c->ostate);
 		break;
 	}
 }
+
 /*
- * ACTIONS: should never update c->istate or c->ostate
+ * ACTIONS: should never update the channel states: c->istate or c->ostate
  */
 static void
-chan_send_ieof(Channel *c){
-	switch(c->istate){
+chan_send_ieof(Channel *c)
+{
+	switch (c->istate) {
 	case CHAN_INPUT_OPEN:
 	case CHAN_INPUT_WAIT_DRAIN:
 		packet_start(SSH_MSG_CHANNEL_INPUT_EOF);
@@ -138,13 +147,14 @@ chan_send_ieof(Channel *c){
 		packet_send();
 		break;
 	default:
-		debug("internal error: channel %d: cannot send IEOF for istate %d",c->self,c->istate);
+		debug("internal error: channel %d: cannot send IEOF for istate %d", c->self, c->istate);
 		break;
 	}
 }
 static void
-chan_send_oclose(Channel *c){
-	switch(c->ostate){
+chan_send_oclose(Channel *c)
+{
+	switch (c->ostate) {
 	case CHAN_OUTPUT_OPEN:
 	case CHAN_OUTPUT_WAIT_DRAIN:
 		chan_shutdown_write(c);
@@ -154,34 +164,39 @@ chan_send_oclose(Channel *c){
 		packet_send();
 		break;
 	default:
-		debug("internal error: channel %d: cannot send OCLOSE for ostate %d",c->self,c->istate);
+		debug("internal error: channel %d: cannot send OCLOSE for ostate %d", c->self, c->istate);
 		break;
 	}
 }
+
 /* helper */
 static void
-chan_shutdown_write(Channel *c){
+chan_shutdown_write(Channel *c)
+{
 	debug("channel %d: shutdown_write", c->self);
-	if(shutdown(c->sock, SHUT_WR)<0)
+	if (shutdown(c->sock, SHUT_WR) < 0)
 		error("chan_shutdown_write failed for #%d/fd%d: %.100s",
-			c->self, c->sock, strerror(errno));
+		      c->self, c->sock, strerror(errno));
 }
 static void
-chan_shutdown_read(Channel *c){
+chan_shutdown_read(Channel *c)
+{
 	debug("channel %d: shutdown_read", c->self);
-	if(shutdown(c->sock, SHUT_RD)<0)
+	if (shutdown(c->sock, SHUT_RD) < 0)
 		error("chan_shutdown_read failed for #%d/fd%d: %.100s",
-			c->self, c->sock, strerror(errno));
+		      c->self, c->sock, strerror(errno));
 }
 static void
-chan_delele_if_full_closed(Channel *c){
-	if(c->istate==CHAN_INPUT_CLOSED && c->ostate==CHAN_OUTPUT_CLOSED){
+chan_delele_if_full_closed(Channel *c)
+{
+	if (c->istate == CHAN_INPUT_CLOSED && c->ostate == CHAN_OUTPUT_CLOSED) {
 		debug("channel %d: closing", c->self);
 		channel_free(c->self);
 	}
 }
 void
-chan_init_iostates(Channel *c){
-	c->ostate=CHAN_OUTPUT_OPEN;
-	c->istate=CHAN_INPUT_OPEN;
+chan_init_iostates(Channel *c)
+{
+	c->ostate = CHAN_OUTPUT_OPEN;
+	c->istate = CHAN_INPUT_OPEN;
 }