[Qemu-devel] [PATCH 03/11] qemu-char: Add fe_open tracking

[Hans de Goede <hdegoede@redhat.com>]

Add tracking of the fe_open state to struct CharDriverState.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 include/char/char.h | 1 +
 qemu-char.c         | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/include/char/char.h b/include/char/char.h
index dd8f39a..3174575 100644
--- a/include/char/char.h
+++ b/include/char/char.h
@@ -75,6 +75,7 @@ struct CharDriverState {
     char *label;
     char *filename;
     int be_open;
+    int fe_open;
     int avail_connections;
     QemuOpts *opts;
     QTAILQ_ENTRY(CharDriverState) next;
diff --git a/qemu-char.c b/qemu-char.c
index 55795d7..2f35504 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3385,6 +3385,10 @@ void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
 
 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);
     }
@@ -3392,6 +3396,10 @@ void qemu_chr_fe_open(struct CharDriverState *chr)
 
 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);
     }
-- 
1.8.1.4