| Message ID | 1466105332-10285-4-git-send-email-marcandre.lureau@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Jun 16, 2016 at 09:28:52PM +0200, marcandre.lureau@redhat.com wrote: > From: Marc-André Lureau <marcandre.lureau@redhat.com> > > qemu leaves unix socket files behind when removing a listening chardev > or leaving. qemu could clean that up, even if doing so isn't race-free. > > Fixes: > https://bugzilla.redhat.com/show_bug.cgi?id=1347077 > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> We normally only unlink what we created. unlinking files we didn't create looks like a silent change that might easily break existing users. > --- > include/qemu/sockets.h | 1 + > io/channel-socket.c | 10 ++++++++++ > tests/test-io-channel-socket.c | 2 +- > util/qemu-sockets.c | 18 ++++++++++++++++++ > 4 files changed, 30 insertions(+), 1 deletion(-) > > diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h > index 1bd9218..5dd2648 100644 > --- a/include/qemu/sockets.h > +++ b/include/qemu/sockets.h > @@ -51,6 +51,7 @@ SocketAddress *socket_parse(const char *str, Error **errp); > int socket_connect(SocketAddress *addr, Error **errp, > NonBlockingConnectHandler *callback, void *opaque); > int socket_listen(SocketAddress *addr, Error **errp); > +void socket_listen_cleanup(int fd, Error **errp); > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp); > > /* Old, ipv4 only bits. Don't use for new code. */ > diff --git a/io/channel-socket.c b/io/channel-socket.c > index 1cd5848..6ec87f8 100644 > --- a/io/channel-socket.c > +++ b/io/channel-socket.c > @@ -400,7 +400,17 @@ static void qio_channel_socket_init(Object *obj) > static void qio_channel_socket_finalize(Object *obj) > { > QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); > + > if (ioc->fd != -1) { > + if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) { > + Error *err = NULL; > + > + socket_listen_cleanup(ioc->fd, &err); > + if (err) { > + error_report_err(err); > + err = NULL; > + } > + } > #ifdef WIN32 > WSAEventSelect(ioc->fd, NULL, 0); > #endif > diff --git a/tests/test-io-channel-socket.c b/tests/test-io-channel-socket.c > index 855306b..f73e063 100644 > --- a/tests/test-io-channel-socket.c > +++ b/tests/test-io-channel-socket.c > @@ -383,7 +383,7 @@ static void test_io_channel_unix(bool async) > > qapi_free_SocketAddress(listen_addr); > qapi_free_SocketAddress(connect_addr); > - unlink(TEST_SOCKET); > + g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE); > } > > > diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c > index 0d6cd1f..5d03695 100644 > --- a/util/qemu-sockets.c > +++ b/util/qemu-sockets.c > @@ -997,6 +997,24 @@ int socket_listen(SocketAddress *addr, Error **errp) > return fd; > } > > +void socket_listen_cleanup(int fd, Error **errp) > +{ > + SocketAddress *addr; > + > + addr = socket_local_address(fd, errp); > + > + if (addr->type == SOCKET_ADDRESS_KIND_UNIX > + && addr->u.q_unix.data->path) { > + if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) { > + error_setg_errno(errp, errno, > + "Failed to unlink socket %s", > + addr->u.q_unix.data->path); > + } > + } > + > + g_free(addr); > +} > + > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) > { > int fd; > -- > 2.7.4 >
On Thu, Jun 23, 2016 at 07:41:55AM +0300, Michael S. Tsirkin wrote: > On Thu, Jun 16, 2016 at 09:28:52PM +0200, marcandre.lureau@redhat.com wrote: > > From: Marc-André Lureau <marcandre.lureau@redhat.com> > > > > qemu leaves unix socket files behind when removing a listening chardev > > or leaving. qemu could clean that up, even if doing so isn't race-free. > > > > Fixes: > > https://bugzilla.redhat.com/show_bug.cgi?id=1347077 > > > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> > > We normally only unlink what we created. > > unlinking files we didn't create > looks like a silent change that might easily break > existing users. Maybe what you want is a need_unlink feature. Set it for unix sockets only, that would make some sense. > > > --- > > include/qemu/sockets.h | 1 + > > io/channel-socket.c | 10 ++++++++++ > > tests/test-io-channel-socket.c | 2 +- > > util/qemu-sockets.c | 18 ++++++++++++++++++ > > 4 files changed, 30 insertions(+), 1 deletion(-) > > > > diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h > > index 1bd9218..5dd2648 100644 > > --- a/include/qemu/sockets.h > > +++ b/include/qemu/sockets.h > > @@ -51,6 +51,7 @@ SocketAddress *socket_parse(const char *str, Error **errp); > > int socket_connect(SocketAddress *addr, Error **errp, > > NonBlockingConnectHandler *callback, void *opaque); > > int socket_listen(SocketAddress *addr, Error **errp); > > +void socket_listen_cleanup(int fd, Error **errp); > > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp); > > > > /* Old, ipv4 only bits. Don't use for new code. */ > > diff --git a/io/channel-socket.c b/io/channel-socket.c > > index 1cd5848..6ec87f8 100644 > > --- a/io/channel-socket.c > > +++ b/io/channel-socket.c > > @@ -400,7 +400,17 @@ static void qio_channel_socket_init(Object *obj) > > static void qio_channel_socket_finalize(Object *obj) > > { > > QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); > > + > > if (ioc->fd != -1) { > > + if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) { > > + Error *err = NULL; > > + > > + socket_listen_cleanup(ioc->fd, &err); > > + if (err) { > > + error_report_err(err); > > + err = NULL; > > + } > > + } > > #ifdef WIN32 > > WSAEventSelect(ioc->fd, NULL, 0); > > #endif > > diff --git a/tests/test-io-channel-socket.c b/tests/test-io-channel-socket.c > > index 855306b..f73e063 100644 > > --- a/tests/test-io-channel-socket.c > > +++ b/tests/test-io-channel-socket.c > > @@ -383,7 +383,7 @@ static void test_io_channel_unix(bool async) > > > > qapi_free_SocketAddress(listen_addr); > > qapi_free_SocketAddress(connect_addr); > > - unlink(TEST_SOCKET); > > + g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE); > > } > > > > > > diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c > > index 0d6cd1f..5d03695 100644 > > --- a/util/qemu-sockets.c > > +++ b/util/qemu-sockets.c > > @@ -997,6 +997,24 @@ int socket_listen(SocketAddress *addr, Error **errp) > > return fd; > > } > > > > +void socket_listen_cleanup(int fd, Error **errp) > > +{ > > + SocketAddress *addr; > > + > > + addr = socket_local_address(fd, errp); > > + > > + if (addr->type == SOCKET_ADDRESS_KIND_UNIX > > + && addr->u.q_unix.data->path) { > > + if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) { > > + error_setg_errno(errp, errno, > > + "Failed to unlink socket %s", > > + addr->u.q_unix.data->path); > > + } > > + } > > + > > + g_free(addr); > > +} > > + > > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) > > { > > int fd; > > -- > > 2.7.4 > >
Hi ----- Original Message ----- > On Thu, Jun 23, 2016 at 07:41:55AM +0300, Michael S. Tsirkin wrote: > > On Thu, Jun 16, 2016 at 09:28:52PM +0200, marcandre.lureau@redhat.com > > wrote: > > > From: Marc-André Lureau <marcandre.lureau@redhat.com> > > > > > > qemu leaves unix socket files behind when removing a listening chardev > > > or leaving. qemu could clean that up, even if doing so isn't race-free. > > > > > > Fixes: > > > https://bugzilla.redhat.com/show_bug.cgi?id=1347077 > > > > > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> > > > > We normally only unlink what we created. What do you mean by "we", qemu currently unlink before creating the unix socket. No further cleanup. > > > > unlinking files we didn't create > > looks like a silent change that might easily break > > existing users. That shouldn't remove files we didn't create. But a bad user could recreate the unix socket after qemu did, and that would remove it. I don't think that's a valid use case though, so it should be fine. > Maybe what you want is a need_unlink feature. > Set it for unix sockets only, that would make some sense. Oh perhaps what you mean is that if the fd was passed, we should cleanup the unix socket? Yes, I think we should do that then. I'll update the series. thanks > > > > > > --- > > > include/qemu/sockets.h | 1 + > > > io/channel-socket.c | 10 ++++++++++ > > > tests/test-io-channel-socket.c | 2 +- > > > util/qemu-sockets.c | 18 ++++++++++++++++++ > > > 4 files changed, 30 insertions(+), 1 deletion(-) > > > > > > diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h > > > index 1bd9218..5dd2648 100644 > > > --- a/include/qemu/sockets.h > > > +++ b/include/qemu/sockets.h > > > @@ -51,6 +51,7 @@ SocketAddress *socket_parse(const char *str, Error > > > **errp); > > > int socket_connect(SocketAddress *addr, Error **errp, > > > NonBlockingConnectHandler *callback, void *opaque); > > > int socket_listen(SocketAddress *addr, Error **errp); > > > +void socket_listen_cleanup(int fd, Error **errp); > > > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error > > > **errp); > > > > > > /* Old, ipv4 only bits. Don't use for new code. */ > > > diff --git a/io/channel-socket.c b/io/channel-socket.c > > > index 1cd5848..6ec87f8 100644 > > > --- a/io/channel-socket.c > > > +++ b/io/channel-socket.c > > > @@ -400,7 +400,17 @@ static void qio_channel_socket_init(Object *obj) > > > static void qio_channel_socket_finalize(Object *obj) > > > { > > > QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); > > > + > > > if (ioc->fd != -1) { > > > + if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) { > > > + Error *err = NULL; > > > + > > > + socket_listen_cleanup(ioc->fd, &err); > > > + if (err) { > > > + error_report_err(err); > > > + err = NULL; > > > + } > > > + } > > > #ifdef WIN32 > > > WSAEventSelect(ioc->fd, NULL, 0); > > > #endif > > > diff --git a/tests/test-io-channel-socket.c > > > b/tests/test-io-channel-socket.c > > > index 855306b..f73e063 100644 > > > --- a/tests/test-io-channel-socket.c > > > +++ b/tests/test-io-channel-socket.c > > > @@ -383,7 +383,7 @@ static void test_io_channel_unix(bool async) > > > > > > qapi_free_SocketAddress(listen_addr); > > > qapi_free_SocketAddress(connect_addr); > > > - unlink(TEST_SOCKET); > > > + g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE); > > > } > > > > > > > > > diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c > > > index 0d6cd1f..5d03695 100644 > > > --- a/util/qemu-sockets.c > > > +++ b/util/qemu-sockets.c > > > @@ -997,6 +997,24 @@ int socket_listen(SocketAddress *addr, Error **errp) > > > return fd; > > > } > > > > > > +void socket_listen_cleanup(int fd, Error **errp) > > > +{ > > > + SocketAddress *addr; > > > + > > > + addr = socket_local_address(fd, errp); > > > + > > > + if (addr->type == SOCKET_ADDRESS_KIND_UNIX > > > + && addr->u.q_unix.data->path) { > > > + if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) { > > > + error_setg_errno(errp, errno, > > > + "Failed to unlink socket %s", > > > + addr->u.q_unix.data->path); > > > + } > > > + } > > > + > > > + g_free(addr); > > > +} > > > + > > > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error > > > **errp) > > > { > > > int fd; > > > -- > > > 2.7.4 > > > >
On Thu, Jun 16, 2016 at 09:28:52PM +0200, marcandre.lureau@redhat.com wrote: > From: Marc-André Lureau <marcandre.lureau@redhat.com> > > qemu leaves unix socket files behind when removing a listening chardev > or leaving. qemu could clean that up, even if doing so isn't race-free. > > Fixes: > https://bugzilla.redhat.com/show_bug.cgi?id=1347077 > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> > --- > include/qemu/sockets.h | 1 + > io/channel-socket.c | 10 ++++++++++ > tests/test-io-channel-socket.c | 2 +- > util/qemu-sockets.c | 18 ++++++++++++++++++ > 4 files changed, 30 insertions(+), 1 deletion(-) Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Regards, Daniel
On Thu, Jun 23, 2016 at 05:08:03AM -0400, Marc-André Lureau wrote: > Hi > > ----- Original Message ----- > > On Thu, Jun 23, 2016 at 07:41:55AM +0300, Michael S. Tsirkin wrote: > > > On Thu, Jun 16, 2016 at 09:28:52PM +0200, marcandre.lureau@redhat.com > > > wrote: > > > > From: Marc-André Lureau <marcandre.lureau@redhat.com> > > > > > > > > qemu leaves unix socket files behind when removing a listening chardev > > > > or leaving. qemu could clean that up, even if doing so isn't race-free. > > > > > > > > Fixes: > > > > https://bugzilla.redhat.com/show_bug.cgi?id=1347077 > > > > > > > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> > > > > > > We normally only unlink what we created. > > What do you mean by "we", qemu currently unlink before creating the unix socket. No further cleanup. > > > > > > > unlinking files we didn't create > > > looks like a silent change that might easily break > > > existing users. > > That shouldn't remove files we didn't create. But a bad user could recreate the unix socket after qemu did, and that would remove it. I don't think that's a valid use case though, so it should be fine. > > > Maybe what you want is a need_unlink feature. > > Set it for unix sockets only, that would make some sense. > > Oh perhaps what you mean is that if the fd was passed, we should cleanup the unix socket? Yes, I think we should do that then. I'll update the series. > > thanks I'd like it better contained - that's all. So let's set a flag that says "must unlink" as opposed to "it's listening". > > > > > > > > > --- > > > > include/qemu/sockets.h | 1 + > > > > io/channel-socket.c | 10 ++++++++++ > > > > tests/test-io-channel-socket.c | 2 +- > > > > util/qemu-sockets.c | 18 ++++++++++++++++++ > > > > 4 files changed, 30 insertions(+), 1 deletion(-) > > > > > > > > diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h > > > > index 1bd9218..5dd2648 100644 > > > > --- a/include/qemu/sockets.h > > > > +++ b/include/qemu/sockets.h > > > > @@ -51,6 +51,7 @@ SocketAddress *socket_parse(const char *str, Error > > > > **errp); > > > > int socket_connect(SocketAddress *addr, Error **errp, > > > > NonBlockingConnectHandler *callback, void *opaque); > > > > int socket_listen(SocketAddress *addr, Error **errp); > > > > +void socket_listen_cleanup(int fd, Error **errp); > > > > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error > > > > **errp); > > > > > > > > /* Old, ipv4 only bits. Don't use for new code. */ > > > > diff --git a/io/channel-socket.c b/io/channel-socket.c > > > > index 1cd5848..6ec87f8 100644 > > > > --- a/io/channel-socket.c > > > > +++ b/io/channel-socket.c > > > > @@ -400,7 +400,17 @@ static void qio_channel_socket_init(Object *obj) > > > > static void qio_channel_socket_finalize(Object *obj) > > > > { > > > > QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); > > > > + > > > > if (ioc->fd != -1) { > > > > + if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) { > > > > + Error *err = NULL; > > > > + > > > > + socket_listen_cleanup(ioc->fd, &err); > > > > + if (err) { > > > > + error_report_err(err); > > > > + err = NULL; > > > > + } > > > > + } > > > > #ifdef WIN32 > > > > WSAEventSelect(ioc->fd, NULL, 0); > > > > #endif > > > > diff --git a/tests/test-io-channel-socket.c > > > > b/tests/test-io-channel-socket.c > > > > index 855306b..f73e063 100644 > > > > --- a/tests/test-io-channel-socket.c > > > > +++ b/tests/test-io-channel-socket.c > > > > @@ -383,7 +383,7 @@ static void test_io_channel_unix(bool async) > > > > > > > > qapi_free_SocketAddress(listen_addr); > > > > qapi_free_SocketAddress(connect_addr); > > > > - unlink(TEST_SOCKET); > > > > + g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE); > > > > } > > > > > > > > > > > > diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c > > > > index 0d6cd1f..5d03695 100644 > > > > --- a/util/qemu-sockets.c > > > > +++ b/util/qemu-sockets.c > > > > @@ -997,6 +997,24 @@ int socket_listen(SocketAddress *addr, Error **errp) > > > > return fd; > > > > } > > > > > > > > +void socket_listen_cleanup(int fd, Error **errp) > > > > +{ > > > > + SocketAddress *addr; > > > > + > > > > + addr = socket_local_address(fd, errp); > > > > + > > > > + if (addr->type == SOCKET_ADDRESS_KIND_UNIX > > > > + && addr->u.q_unix.data->path) { > > > > + if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) { > > > > + error_setg_errno(errp, errno, > > > > + "Failed to unlink socket %s", > > > > + addr->u.q_unix.data->path); > > > > + } > > > > + } > > > > + > > > > + g_free(addr); > > > > +} > > > > + > > > > int socket_dgram(SocketAddress *remote, SocketAddress *local, Error > > > > **errp) > > > > { > > > > int fd; > > > > -- > > > > 2.7.4 > > > > > >
On Thu, Jun 23, 2016 at 7:01 PM, Michael S. Tsirkin <mst@redhat.com> wrote: >> > Maybe what you want is a need_unlink feature. >> > Set it for unix sockets only, that would make some sense. >> >> Oh perhaps what you mean is that if the fd was passed, we should cleanup the unix socket? Yes, I think we should do that then. I'll update the series. Actually it's not possible to pass a listening fd to a socket chardev today (the path argument doesn't understand /dev/fdset), so only path created by qemu will be cleaned up. > > I'd like it better contained - that's all. So let's set a flag that says > "must unlink" as opposed to "it's listening". You suggest to rename QIO_CHANNEL_FEATURE_LISTEN to QIO_CHANNEL_FEATURE_LISTEN_MUST_UNLINK ? Or to add another feature flag? I don't think that brings anything useful here. What would you think Daniel?
On Fri, Jun 24, 2016 at 02:08:52PM +0200, Marc-André Lureau wrote: > On Thu, Jun 23, 2016 at 7:01 PM, Michael S. Tsirkin <mst@redhat.com> wrote: > >> > Maybe what you want is a need_unlink feature. > >> > Set it for unix sockets only, that would make some sense. > >> > >> Oh perhaps what you mean is that if the fd was passed, we should cleanup the unix socket? Yes, I think we should do that then. I'll update the series. > > Actually it's not possible to pass a listening fd to a socket chardev > today (the path argument doesn't understand /dev/fdset), so only path > created by qemu will be cleaned up. > > > > > I'd like it better contained - that's all. So let's set a flag that says > > "must unlink" as opposed to "it's listening". > > You suggest to rename QIO_CHANNEL_FEATURE_LISTEN to > QIO_CHANNEL_FEATURE_LISTEN_MUST_UNLINK ? Or to add another feature > flag? I don't think that brings anything useful here. IMHO the existing QIO_CHANNEL_FEATURE_LISTEN makes more sense than a QIO_CHANNEL_FEATURE_MUST_UNLINK, so I'd like to see your current patches go in as is. Regards, Daniel
On Fri, Jun 24, 2016 at 02:08:52PM +0200, Marc-André Lureau wrote: > On Thu, Jun 23, 2016 at 7:01 PM, Michael S. Tsirkin <mst@redhat.com> wrote: > >> > Maybe what you want is a need_unlink feature. > >> > Set it for unix sockets only, that would make some sense. > >> > >> Oh perhaps what you mean is that if the fd was passed, we should cleanup the unix socket? Yes, I think we should do that then. I'll update the series. > > Actually it's not possible to pass a listening fd to a socket chardev > today (the path argument doesn't understand /dev/fdset), so only path > created by qemu will be cleaned up. > > > > > I'd like it better contained - that's all. So let's set a flag that says > > "must unlink" as opposed to "it's listening". > > You suggest to rename QIO_CHANNEL_FEATURE_LISTEN to > QIO_CHANNEL_FEATURE_LISTEN_MUST_UNLINK ? QIO_CHANNEL_FEATURE_UNLINK_ON_CLOSE or something like this. Or maybe QIO_CHANNEL_FEATURE_BOUND > Or to add another feature > flag? I don't think that brings anything useful here. The point is that in the future we might be listening on sockets where we did not bind it. I would think that in that case, we do not want to unlink it. So name should reflect this somehow. > What would you think Daniel? > > -- > Marc-André Lureau
On Sat, Jun 25, 2016 at 01:07:10AM +0300, Michael S. Tsirkin wrote: > On Fri, Jun 24, 2016 at 02:08:52PM +0200, Marc-André Lureau wrote: > > On Thu, Jun 23, 2016 at 7:01 PM, Michael S. Tsirkin <mst@redhat.com> wrote: > > >> > Maybe what you want is a need_unlink feature. > > >> > Set it for unix sockets only, that would make some sense. > > >> > > >> Oh perhaps what you mean is that if the fd was passed, we should cleanup the unix socket? Yes, I think we should do that then. I'll update the series. > > > > Actually it's not possible to pass a listening fd to a socket chardev > > today (the path argument doesn't understand /dev/fdset), so only path > > created by qemu will be cleaned up. > > > > > > > > I'd like it better contained - that's all. So let's set a flag that says > > > "must unlink" as opposed to "it's listening". > > > > You suggest to rename QIO_CHANNEL_FEATURE_LISTEN to > > QIO_CHANNEL_FEATURE_LISTEN_MUST_UNLINK ? > > QIO_CHANNEL_FEATURE_UNLINK_ON_CLOSE > > or something like this. > > Or maybe QIO_CHANNEL_FEATURE_BOUND > > > Or to add another feature > > flag? I don't think that brings anything useful here. > > The point is that in the future we might be listening on sockets where > we did not bind it. I would think that in that case, we do not want to > unlink it. So name should reflect this somehow. There is no possibility of listening on sockets without binding to them with the current design of the code. If & when we want such support we can adapt as needed, but I don't see any real point in trying to support something that is impossible right now. Regards, Daniel
diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 1bd9218..5dd2648 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -51,6 +51,7 @@ SocketAddress *socket_parse(const char *str, Error **errp); int socket_connect(SocketAddress *addr, Error **errp, NonBlockingConnectHandler *callback, void *opaque); int socket_listen(SocketAddress *addr, Error **errp); +void socket_listen_cleanup(int fd, Error **errp); int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp); /* Old, ipv4 only bits. Don't use for new code. */ diff --git a/io/channel-socket.c b/io/channel-socket.c index 1cd5848..6ec87f8 100644 --- a/io/channel-socket.c +++ b/io/channel-socket.c @@ -400,7 +400,17 @@ static void qio_channel_socket_init(Object *obj) static void qio_channel_socket_finalize(Object *obj) { QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); + if (ioc->fd != -1) { + if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) { + Error *err = NULL; + + socket_listen_cleanup(ioc->fd, &err); + if (err) { + error_report_err(err); + err = NULL; + } + } #ifdef WIN32 WSAEventSelect(ioc->fd, NULL, 0); #endif diff --git a/tests/test-io-channel-socket.c b/tests/test-io-channel-socket.c index 855306b..f73e063 100644 --- a/tests/test-io-channel-socket.c +++ b/tests/test-io-channel-socket.c @@ -383,7 +383,7 @@ static void test_io_channel_unix(bool async) qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); - unlink(TEST_SOCKET); + g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE); } diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index 0d6cd1f..5d03695 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -997,6 +997,24 @@ int socket_listen(SocketAddress *addr, Error **errp) return fd; } +void socket_listen_cleanup(int fd, Error **errp) +{ + SocketAddress *addr; + + addr = socket_local_address(fd, errp); + + if (addr->type == SOCKET_ADDRESS_KIND_UNIX + && addr->u.q_unix.data->path) { + if (unlink(addr->u.q_unix.data->path) < 0 && errno != ENOENT) { + error_setg_errno(errp, errno, + "Failed to unlink socket %s", + addr->u.q_unix.data->path); + } + } + + g_free(addr); +} + int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) { int fd;