From 4963be850090933e5769f9d3412d9eb86f522b1b Mon Sep 17 00:00:00 2001
From: Richard Jones <rjones@redhat.com>
Date: Tue, 24 Aug 2010 11:53:40 +0100
Subject: [PATCH] New APIs: set-network and get-network to enable network
 support.

guestfs_set_network (g, true) enables network support in the appliance.
---
 configure.ac           |  6 +++---
 src/generator.ml       | 19 +++++++++++++++++++
 src/guestfs-internal.h |  1 +
 src/guestfs.c          | 13 +++++++++++++
 src/guestfs.pod        |  5 +++++
 src/launch.c           |  8 ++++++++
 6 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 0ba4157..62998ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -300,14 +300,14 @@ AC_ARG_WITH([drive-if],
 AC_DEFINE_UNQUOTED([DRIVE_IF],["$with_drive_if"],[Default drive interface.])
 
 dnl Set interface used by the network.  Normally you should
-dnl leave this at the default (virtio) but you can use the
+dnl leave this at the default (virtio-net-pci) but you can use the
 dnl alternative (ne2k_pci) because of bugs in virtio networking
 dnl eg. https://bugzilla.redhat.com/show_bug.cgi?id=516022
 AC_ARG_WITH([net-if],
         [AS_HELP_STRING([--with-net-if],
-          [set default net driver (virtio|ne2k_pci) @<:@default=virtio@:>@])],
+          [set default net driver (virtio-net-pci|ne2k_pci) @<:@default=virtio-net-pci@:>@])],
         [],
-        [with_net_if=virtio])
+        [with_net_if=virtio-net-pci])
 AC_DEFINE_UNQUOTED([NET_IF],["$with_net_if"],[Default network interface.])
 
 dnl Check for febootstrap etc.
diff --git a/src/generator.ml b/src/generator.ml
index 233f8bd..00caa6a 100755
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -1289,6 +1289,25 @@ for a filesystem to be shared between operating systems.
 Please read L<guestfs(3)/INSPECTION> for more details.
 See also C<guestfs_inspect_get_mountpoints>.");
 
+  ("set_network", (RErr, [Bool "network"]), -1, [FishAlias "network"],
+   [],
+   "set enable network flag",
+   "\
+If C<network> is true, then the network is enabled in the
+libguestfs appliance.  The default is false.
+
+This affects whether commands are able to access the network
+(see L<guestfs(3)/RUNNING COMMANDS>).
+
+You must call this before calling C<guestfs_launch>, otherwise
+it has no effect.");
+
+  ("get_network", (RBool "network", []), -1, [],
+   [],
+   "get enable network flag",
+   "\
+This returns the enable network flag.");
+
 ]
 
 (* daemon_functions are any functions which cause some action
diff --git a/src/guestfs-internal.h b/src/guestfs-internal.h
index b534b6a..e37c9c2 100644
--- a/src/guestfs-internal.h
+++ b/src/guestfs-internal.h
@@ -98,6 +98,7 @@ struct guestfs_h
   int autosync;
   int direct;
   int recovery_proc;
+  int enable_network;
 
   char *path;			/* Path to kernel, initrd. */
   char *qemu;			/* Qemu binary. */
diff --git a/src/guestfs.c b/src/guestfs.c
index 74de38c..eaacd39 100644
--- a/src/guestfs.c
+++ b/src/guestfs.c
@@ -601,6 +601,19 @@ guestfs__get_recovery_proc (guestfs_h *g)
   return g->recovery_proc;
 }
 
+int
+guestfs__set_network (guestfs_h *g, int v)
+{
+  g->enable_network = !!v;
+  return 0;
+}
+
+int
+guestfs__get_network (guestfs_h *g)
+{
+  return g->enable_network;
+}
+
 void
 guestfs_set_log_message_callback (guestfs_h *g,
                                   guestfs_log_message_cb cb, void *opaque)
diff --git a/src/guestfs.pod b/src/guestfs.pod
index 4dafb07..590c768 100644
--- a/src/guestfs.pod
+++ b/src/guestfs.pod
@@ -358,6 +358,11 @@ The command will be running in limited memory.
 
 =item *
 
+The network may not be available unless you enable it
+(see L</guestfs_set_network>).
+
+=item *
+
 Only supports Linux guests (not Windows, BSD, etc).
 
 =item *
diff --git a/src/launch.c b/src/launch.c
index 1e1ea8e..9262cc5 100644
--- a/src/launch.c
+++ b/src/launch.c
@@ -410,6 +410,14 @@ guestfs__launch (guestfs_h *g)
     add_cmdline (g, "-device");
     add_cmdline (g, "virtserialport,chardev=channel0,name=org.libguestfs.channel.0");
 
+    /* Enable user networking. */
+    if (g->enable_network) {
+      add_cmdline (g, "-netdev");
+      add_cmdline (g, "user,id=usernet");
+      add_cmdline (g, "-device");
+      add_cmdline (g, NET_IF ",netdev=usernet");
+    }
+
 #define LINUX_CMDLINE							\
     "panic=1 "         /* force kernel to panic if daemon exits */	\
     "console=ttyS0 "   /* serial console */				\
-- 
1.8.3.1