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[Qemu-devel] [PATCH 05/13] char-win: close file handle except with console

Marc-André Lureau posted 13 patches 8 years, 9 months ago
There is a newer version of this series
[Qemu-devel] [PATCH 05/13] char-win: close file handle except with console
Posted by Marc-André Lureau 8 years, 9 months ago 
Only the console handle shouldn't be closed, however, the "file" handle
should.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-win.h     |  5 ++---
 chardev/char-console.c |  2 +-
 chardev/char-file.c    |  2 +-
 chardev/char-win.c     | 12 ++++--------
 4 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/chardev/char-win.h b/chardev/char-win.h
index 888be2b3ca..9ed2ba998a 100644
--- a/chardev/char-win.h
+++ b/chardev/char-win.h
@@ -29,14 +29,13 @@
 typedef struct {
     Chardev parent;
 
+    bool dont_close; /* console do not close file */
     HANDLE file, hrecv, hsend;
     OVERLAPPED orecv;
     BOOL fpipe;
 
     /* Protected by the Chardev chr_write_lock.  */
     OVERLAPPED osend;
-    /* FIXME: file/console do not finalize */
-    bool skip_free;
 } WinChardev;
 
 #define NSENDBUF 2048
@@ -45,7 +44,7 @@ typedef struct {
 #define TYPE_CHARDEV_WIN "chardev-win"
 #define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
 
-void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out);
+void win_chr_set_file(Chardev *chr, HANDLE file, bool dont_close);
 int win_chr_serial_init(Chardev *chr, const char *filename, Error **errp);
 int win_chr_pipe_poll(void *opaque);
 
diff --git a/chardev/char-console.c b/chardev/char-console.c
index c824937fe6..8d972c1506 100644
--- a/chardev/char-console.c
+++ b/chardev/char-console.c
@@ -29,7 +29,7 @@ static void qemu_chr_open_win_con(Chardev *chr,
                                   bool *be_opened,
                                   Error **errp)
 {
-    qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE));
+    win_chr_set_file(chr, GetStdHandle(STD_OUTPUT_HANDLE), true);
 }
 
 static void char_console_class_init(ObjectClass *oc, void *data)
diff --git a/chardev/char-file.c b/chardev/char-file.c
index 8bae25350d..aed4ae1569 100644
--- a/chardev/char-file.c
+++ b/chardev/char-file.c
@@ -65,7 +65,7 @@ static void qmp_chardev_open_file(Chardev *chr,
         return;
     }
 
-    qemu_chr_open_win_file(chr, out);
+    win_chr_set_file(chr, out, false);
 #else
     int flags, in = -1, out;
 
diff --git a/chardev/char-win.c b/chardev/char-win.c
index a7e3296909..24cf364947 100644
--- a/chardev/char-win.c
+++ b/chardev/char-win.c
@@ -192,17 +192,13 @@ static void char_win_finalize(Object *obj)
     Chardev *chr = CHARDEV(obj);
     WinChardev *s = WIN_CHARDEV(chr);
 
-    if (s->skip_free) {
-        return;
-    }
-
     if (s->hsend) {
         CloseHandle(s->hsend);
     }
     if (s->hrecv) {
         CloseHandle(s->hrecv);
     }
-    if (s->file) {
+    if (!s->dont_close && s->file) {
         CloseHandle(s->file);
     }
     if (s->fpipe) {
@@ -214,12 +210,12 @@ static void char_win_finalize(Object *obj)
     qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
 }
 
-void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
+void win_chr_set_file(Chardev *chr, HANDLE file, bool dont_close)
 {
     WinChardev *s = WIN_CHARDEV(chr);
 
-    s->skip_free = true;
-    s->file = fd_out;
+    s->dont_close = dont_close;
+    s->file = file;
 }
 
 static void char_win_class_init(ObjectClass *oc, void *data)
-- 
2.13.0.rc1.16.gd80b50c3f
Re: [Qemu-devel] [PATCH 05/13] char-win: close file handle except with console
Posted by Philippe Mathieu-Daudé 8 years, 8 months ago 
Hi Marc-André,

On 05/09/2017 08:33 AM, Marc-André Lureau wrote:
> Only the console handle shouldn't be closed, however, the "file" handle
> should.

Correct.

>
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char-win.h     |  5 ++---
>  chardev/char-console.c |  2 +-
>  chardev/char-file.c    |  2 +-
>  chardev/char-win.c     | 12 ++++--------
>  4 files changed, 8 insertions(+), 13 deletions(-)
>
> diff --git a/chardev/char-win.h b/chardev/char-win.h
> index 888be2b3ca..9ed2ba998a 100644
> --- a/chardev/char-win.h
> +++ b/chardev/char-win.h
> @@ -29,14 +29,13 @@
>  typedef struct {
>      Chardev parent;
>
> +    bool dont_close; /* console do not close file */

That or "keep_open" to avoid negative thoughts ;)

Anyway:
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

>      HANDLE file, hrecv, hsend;
>      OVERLAPPED orecv;
>      BOOL fpipe;
>
>      /* Protected by the Chardev chr_write_lock.  */
>      OVERLAPPED osend;
> -    /* FIXME: file/console do not finalize */
> -    bool skip_free;
>  } WinChardev;
>
>  #define NSENDBUF 2048
> @@ -45,7 +44,7 @@ typedef struct {
>  #define TYPE_CHARDEV_WIN "chardev-win"
>  #define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
>
> -void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out);
> +void win_chr_set_file(Chardev *chr, HANDLE file, bool dont_close);
>  int win_chr_serial_init(Chardev *chr, const char *filename, Error **errp);
>  int win_chr_pipe_poll(void *opaque);
>
> diff --git a/chardev/char-console.c b/chardev/char-console.c
> index c824937fe6..8d972c1506 100644
> --- a/chardev/char-console.c
> +++ b/chardev/char-console.c
> @@ -29,7 +29,7 @@ static void qemu_chr_open_win_con(Chardev *chr,
>                                    bool *be_opened,
>                                    Error **errp)
>  {
> -    qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE));
> +    win_chr_set_file(chr, GetStdHandle(STD_OUTPUT_HANDLE), true);
>  }
>
>  static void char_console_class_init(ObjectClass *oc, void *data)
> diff --git a/chardev/char-file.c b/chardev/char-file.c
> index 8bae25350d..aed4ae1569 100644
> --- a/chardev/char-file.c
> +++ b/chardev/char-file.c
> @@ -65,7 +65,7 @@ static void qmp_chardev_open_file(Chardev *chr,
>          return;
>      }
>
> -    qemu_chr_open_win_file(chr, out);
> +    win_chr_set_file(chr, out, false);
>  #else
>      int flags, in = -1, out;
>
> diff --git a/chardev/char-win.c b/chardev/char-win.c
> index a7e3296909..24cf364947 100644
> --- a/chardev/char-win.c
> +++ b/chardev/char-win.c
> @@ -192,17 +192,13 @@ static void char_win_finalize(Object *obj)
>      Chardev *chr = CHARDEV(obj);
>      WinChardev *s = WIN_CHARDEV(chr);
>
> -    if (s->skip_free) {
> -        return;
> -    }
> -
>      if (s->hsend) {
>          CloseHandle(s->hsend);
>      }
>      if (s->hrecv) {
>          CloseHandle(s->hrecv);
>      }
> -    if (s->file) {
> +    if (!s->dont_close && s->file) {
>          CloseHandle(s->file);
>      }
>      if (s->fpipe) {
> @@ -214,12 +210,12 @@ static void char_win_finalize(Object *obj)
>      qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
>  }
>
> -void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
> +void win_chr_set_file(Chardev *chr, HANDLE file, bool dont_close)
>  {
>      WinChardev *s = WIN_CHARDEV(chr);
>
> -    s->skip_free = true;
> -    s->file = fd_out;
> +    s->dont_close = dont_close;
> +    s->file = file;
>  }
>
>  static void char_win_class_init(ObjectClass *oc, void *data)
>
Re: [Qemu-devel] [PATCH 05/13] char-win: close file handle except with console
Posted by Marc-André Lureau 8 years, 8 months ago 
Hi

----- Original Message -----
> Hi Marc-André,
> 
> On 05/09/2017 08:33 AM, Marc-André Lureau wrote:
> > Only the console handle shouldn't be closed, however, the "file" handle
> > should.
> 
> Correct.
> 
> >
> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > ---
> >  chardev/char-win.h     |  5 ++---
> >  chardev/char-console.c |  2 +-
> >  chardev/char-file.c    |  2 +-
> >  chardev/char-win.c     | 12 ++++--------
> >  4 files changed, 8 insertions(+), 13 deletions(-)
> >
> > diff --git a/chardev/char-win.h b/chardev/char-win.h
> > index 888be2b3ca..9ed2ba998a 100644
> > --- a/chardev/char-win.h
> > +++ b/chardev/char-win.h
> > @@ -29,14 +29,13 @@
> >  typedef struct {
> >      Chardev parent;
> >
> > +    bool dont_close; /* console do not close file */
> 
> That or "keep_open" to avoid negative thoughts ;)

agreed & changed, thanks

> 
> Anyway:
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> 
> >      HANDLE file, hrecv, hsend;
> >      OVERLAPPED orecv;
> >      BOOL fpipe;
> >
> >      /* Protected by the Chardev chr_write_lock.  */
> >      OVERLAPPED osend;
> > -    /* FIXME: file/console do not finalize */
> > -    bool skip_free;
> >  } WinChardev;
> >
> >  #define NSENDBUF 2048
> > @@ -45,7 +44,7 @@ typedef struct {
> >  #define TYPE_CHARDEV_WIN "chardev-win"
> >  #define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
> >
> > -void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out);
> > +void win_chr_set_file(Chardev *chr, HANDLE file, bool dont_close);
> >  int win_chr_serial_init(Chardev *chr, const char *filename, Error **errp);
> >  int win_chr_pipe_poll(void *opaque);
> >
> > diff --git a/chardev/char-console.c b/chardev/char-console.c
> > index c824937fe6..8d972c1506 100644
> > --- a/chardev/char-console.c
> > +++ b/chardev/char-console.c
> > @@ -29,7 +29,7 @@ static void qemu_chr_open_win_con(Chardev *chr,
> >                                    bool *be_opened,
> >                                    Error **errp)
> >  {
> > -    qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE));
> > +    win_chr_set_file(chr, GetStdHandle(STD_OUTPUT_HANDLE), true);
> >  }
> >
> >  static void char_console_class_init(ObjectClass *oc, void *data)
> > diff --git a/chardev/char-file.c b/chardev/char-file.c
> > index 8bae25350d..aed4ae1569 100644
> > --- a/chardev/char-file.c
> > +++ b/chardev/char-file.c
> > @@ -65,7 +65,7 @@ static void qmp_chardev_open_file(Chardev *chr,
> >          return;
> >      }
> >
> > -    qemu_chr_open_win_file(chr, out);
> > +    win_chr_set_file(chr, out, false);
> >  #else
> >      int flags, in = -1, out;
> >
> > diff --git a/chardev/char-win.c b/chardev/char-win.c
> > index a7e3296909..24cf364947 100644
> > --- a/chardev/char-win.c
> > +++ b/chardev/char-win.c
> > @@ -192,17 +192,13 @@ static void char_win_finalize(Object *obj)
> >      Chardev *chr = CHARDEV(obj);
> >      WinChardev *s = WIN_CHARDEV(chr);
> >
> > -    if (s->skip_free) {
> > -        return;
> > -    }
> > -
> >      if (s->hsend) {
> >          CloseHandle(s->hsend);
> >      }
> >      if (s->hrecv) {
> >          CloseHandle(s->hrecv);
> >      }
> > -    if (s->file) {
> > +    if (!s->dont_close && s->file) {
> >          CloseHandle(s->file);
> >      }
> >      if (s->fpipe) {
> > @@ -214,12 +210,12 @@ static void char_win_finalize(Object *obj)
> >      qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
> >  }
> >
> > -void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
> > +void win_chr_set_file(Chardev *chr, HANDLE file, bool dont_close)
> >  {
> >      WinChardev *s = WIN_CHARDEV(chr);
> >
> > -    s->skip_free = true;
> > -    s->file = fd_out;
> > +    s->dont_close = dont_close;
> > +    s->file = file;
> >  }
> >
> >  static void char_win_class_init(ObjectClass *oc, void *data)
> >
>

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