commit c0c4bd2cfae0fb83696000f1bfc355f22e2b41cb
author Hans de Goede <hdegoede@redhat.com> Tue Mar 26 11:07:55 2013 +0100
committer Anthony Liguori <aliguori@us.ibm.com> Wed Mar 27 10:26:49 2013 -0500
tree ddd7d1991f2a85190b5ac5f28799fae89945e460
parent fee204fd46016c168ca4d404d04e2c06b8b34770

qemu-char: Add fe_open tracking

Add tracking of the fe_open state to struct CharDriverState.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Message-id: 1364292483-16564-4-git-send-email-hdegoede@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

include/char/char.h

diff --git a/include/char/char.h b/include/char/char.h
index e9d2c10..dbb1b89 100644
--- a/include/char/char.h
+++ b/include/char/char.h
@@ -75,6 +75,7 @@
     char *label;
     char *filename;
     int be_open;
+    int fe_open;
     int avail_connections;
     QemuOpts *opts;
     QTAILQ_ENTRY(CharDriverState) next;

qemu-char.c

diff --git a/qemu-char.c b/qemu-char.c
index 345fd67..c9890ad 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3412,6 +3412,10 @@
 
 void qemu_chr_fe_open(struct CharDriverState *chr)
 {
+    if (chr->fe_open) {
+        return;
+    }
+    chr->fe_open = 1;
     if (chr->chr_guest_open) {
         chr->chr_guest_open(chr);
     }
@@ -3419,6 +3423,10 @@
 
 void qemu_chr_fe_close(struct CharDriverState *chr)
 {
+    if (!chr->fe_open) {
+        return;
+    }
+    chr->fe_open = 0;
     if (chr->chr_guest_close) {
         chr->chr_guest_close(chr);
     }