Re: [Qemu-devel] [PATCH v1] chardev: fix handling of EAGAIN for TCP chardev
On 22/02/2018 13:13, Daniel P. Berrangé wrote: > When this commit was applied > > commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 > Author: Daniel P. Berrange > Date: Tue Jan 19 11:14:29 2016 + > > char: convert from GIOChannel to QIOChannel > > The tcp_chr_recv() function was changed to return QIO_CHANNEL_ERR_BLOCK > which corresonds to -2. As such the handling for EAGAIN was able to be > removed from tcp_chr_read(). Unfortunately in a later commit: > > commit b6572b4f97a7b126c7b24e165893ed9fe3d72e1f > Author: Marc-André Lureau > Date: Fri Mar 11 18:55:24 2016 +0100 > > char: translate from QIOChannel error to errno > > The tcp_chr_recv() function was changed back to return -1, with errno > set to EAGAIN, without also re-addding support for this to tcp_chr_read() > > Reported-by: Aleksey Kuleshov > Signed-off-by: Daniel P. Berrangé > --- > chardev/char-socket.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/chardev/char-socket.c b/chardev/char-socket.c > index bdd6cff5f6..b15682c362 100644 > --- a/chardev/char-socket.c > +++ b/chardev/char-socket.c > @@ -449,7 +449,7 @@ static gboolean tcp_chr_read(QIOChannel *chan, > GIOCondition cond, void *opaque) > len = s->max_size; > } > size = tcp_chr_recv(chr, (void *)buf, len); > -if (size == 0 || size == -1) { > +if (size == 0 || (size == -1 && errno != EAGAIN)) { > /* connection closed */ > tcp_chr_disconnect(chr); > } else if (size > 0) { > Queued, thanks. Paolo
Re: [Qemu-devel] [PATCH v1] chardev: fix handling of EAGAIN for TCP chardev
Thank you, Daniel! 22.02.2018, 15:14, "Daniel P. Berrangé" : > When this commit was applied > > commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 > Author: Daniel P. Berrange > Date: Tue Jan 19 11:14:29 2016 + > > char: convert from GIOChannel to QIOChannel > > The tcp_chr_recv() function was changed to return QIO_CHANNEL_ERR_BLOCK > which corresonds to -2. As such the handling for EAGAIN was able to be > removed from tcp_chr_read(). Unfortunately in a later commit: > > commit b6572b4f97a7b126c7b24e165893ed9fe3d72e1f > Author: Marc-André Lureau > Date: Fri Mar 11 18:55:24 2016 +0100 > > char: translate from QIOChannel error to errno > > The tcp_chr_recv() function was changed back to return -1, with errno > set to EAGAIN, without also re-addding support for this to tcp_chr_read() > > Reported-by: Aleksey Kuleshov > Signed-off-by: Daniel P. Berrangé > --- > chardev/char-socket.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/chardev/char-socket.c b/chardev/char-socket.c > index bdd6cff5f6..b15682c362 100644 > --- a/chardev/char-socket.c > +++ b/chardev/char-socket.c > @@ -449,7 +449,7 @@ static gboolean tcp_chr_read(QIOChannel *chan, > GIOCondition cond, void *opaque) > len = s->max_size; > } > size = tcp_chr_recv(chr, (void *)buf, len); > - if (size == 0 || size == -1) { > + if (size == 0 || (size == -1 && errno != EAGAIN)) { > /* connection closed */ > tcp_chr_disconnect(chr); > } else if (size > 0) { > -- > 2.14.3
Re: [Qemu-devel] [PATCH v1] chardev: fix handling of EAGAIN for TCP chardev
On Thu, Feb 22, 2018 at 1:13 PM, Daniel P. Berrangé wrote: > When this commit was applied > > commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 > Author: Daniel P. Berrange > Date: Tue Jan 19 11:14:29 2016 + > > char: convert from GIOChannel to QIOChannel > > The tcp_chr_recv() function was changed to return QIO_CHANNEL_ERR_BLOCK > which corresonds to -2. As such the handling for EAGAIN was able to be > removed from tcp_chr_read(). Unfortunately in a later commit: > > commit b6572b4f97a7b126c7b24e165893ed9fe3d72e1f > Author: Marc-André Lureau > Date: Fri Mar 11 18:55:24 2016 +0100 > > char: translate from QIOChannel error to errno > > The tcp_chr_recv() function was changed back to return -1, with errno > set to EAGAIN, without also re-addding support for this to tcp_chr_read() > > Reported-by: Aleksey Kuleshov > Signed-off-by: Daniel P. Berrangé Reviewed-by: Marc-André Lureau > --- > chardev/char-socket.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/chardev/char-socket.c b/chardev/char-socket.c > index bdd6cff5f6..b15682c362 100644 > --- a/chardev/char-socket.c > +++ b/chardev/char-socket.c > @@ -449,7 +449,7 @@ static gboolean tcp_chr_read(QIOChannel *chan, > GIOCondition cond, void *opaque) > len = s->max_size; > } > size = tcp_chr_recv(chr, (void *)buf, len); > -if (size == 0 || size == -1) { > +if (size == 0 || (size == -1 && errno != EAGAIN)) { > /* connection closed */ > tcp_chr_disconnect(chr); > } else if (size > 0) { > -- > 2.14.3 > > -- Marc-André Lureau
[Qemu-devel] [PATCH v1] chardev: fix handling of EAGAIN for TCP chardev
When this commit was applied commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 Author: Daniel P. Berrange Date: Tue Jan 19 11:14:29 2016 + char: convert from GIOChannel to QIOChannel The tcp_chr_recv() function was changed to return QIO_CHANNEL_ERR_BLOCK which corresonds to -2. As such the handling for EAGAIN was able to be removed from tcp_chr_read(). Unfortunately in a later commit: commit b6572b4f97a7b126c7b24e165893ed9fe3d72e1f Author: Marc-André Lureau Date: Fri Mar 11 18:55:24 2016 +0100 char: translate from QIOChannel error to errno The tcp_chr_recv() function was changed back to return -1, with errno set to EAGAIN, without also re-addding support for this to tcp_chr_read() Reported-by: Aleksey Kuleshov Signed-off-by: Daniel P. Berrangé --- chardev/char-socket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/chardev/char-socket.c b/chardev/char-socket.c index bdd6cff5f6..b15682c362 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -449,7 +449,7 @@ static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) len = s->max_size; } size = tcp_chr_recv(chr, (void *)buf, len); -if (size == 0 || size == -1) { +if (size == 0 || (size == -1 && errno != EAGAIN)) { /* connection closed */ tcp_chr_disconnect(chr); } else if (size > 0) { -- 2.14.3