Re: [PATCH libmnl 1/2] socket: introduce mnl_socket_open2()

[Pablo Neira Ayuso <pablo@netfilter.org>]

On Mon, Oct 05, 2015 at 07:27:46PM +0200, Jozsef Kadlecsik wrote:
> Hi,
> 
> On Fri, 2 Oct 2015, Guillaume Nault wrote:
> 
> > Define mnl_socket_open2() so that user can pass a set of SOCK_* flags
> > at socket creation time.
> > 
> > Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
> > ---
> >  include/libmnl/libmnl.h |  3 ++-
> >  src/libmnl.map          |  1 +
> >  src/socket.c            | 41 ++++++++++++++++++++++++++++++++---------
> >  3 files changed, 35 insertions(+), 10 deletions(-)
> > 
> > diff --git a/include/libmnl/libmnl.h b/include/libmnl/libmnl.h
> > index 3a589bc..5adb13c 100644
> > --- a/include/libmnl/libmnl.h
> > +++ b/include/libmnl/libmnl.h
> > @@ -21,7 +21,8 @@ extern "C" {
> >  
> >  struct mnl_socket;
> >  
> > -extern struct mnl_socket *mnl_socket_open(int type);
> > +extern struct mnl_socket *mnl_socket_open(int bus);
> > +extern struct mnl_socket *mnl_socket_open2(int bus, int flags);
> >  extern struct mnl_socket *mnl_socket_fdopen(int fd);
> >  extern int mnl_socket_bind(struct mnl_socket *nl, unsigned int groups, pid_t pid);
> >  extern int mnl_socket_close(struct mnl_socket *nl);
> > diff --git a/src/libmnl.map b/src/libmnl.map
> > index 3c147a7..e5920e5 100644
> > --- a/src/libmnl.map
> > +++ b/src/libmnl.map
> > @@ -74,5 +74,6 @@ LIBMNL_1.1 {
> >  } LIBMNL_1.0;
> >  
> >  LIBMNL_1.2 {
> > +  mnl_socket_open2;
> >    mnl_socket_fdopen;
> >  } LIBMNL_1.1;
> 
> I think this breaks library ABI: you should introduce a new revision 
> instead.

This would be part of the new interfaces for the next release:

diff --git a/src/libmnl.map b/src/libmnl.map
index dbc332e..e5920e5 100644
--- a/src/libmnl.map
+++ b/src/libmnl.map
@@ -72,3 +72,8 @@ local: *;
 LIBMNL_1.1 {
   mnl_attr_parse_payload;
 } LIBMNL_1.0;
+
+LIBMNL_1.2 {
+  mnl_socket_open2;
+  mnl_socket_fdopen;
+} LIBMNL_1.1;