[PATCH v4 4/4] net: Use bundle mechanism

[Akihiko Odaki <akihiko.odaki@gmail.com>]

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
---
 include/net/net.h | 2 +-
 meson.build       | 8 +++++++-
 net/tap.c         | 6 +++++-
 qemu-options.hx   | 4 ++--
 4 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/include/net/net.h b/include/net/net.h
index 523136c7acb..4a5ed27a4b7 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -228,7 +228,7 @@ NetClientState *net_hub_port_find(int hub_id);
 
 #define DEFAULT_NETWORK_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifup"
 #define DEFAULT_NETWORK_DOWN_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifdown"
-#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
+#define DEFAULT_BUNDLE_BRIDGE_HELPER CONFIG_QEMU_BUNDLE_HELPERDIR "/qemu-bridge-helper"
 #define DEFAULT_BRIDGE_INTERFACE "br0"
 
 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
diff --git a/meson.build b/meson.build
index e7b385eaf34..72d006f228e 100644
--- a/meson.build
+++ b/meson.build
@@ -1686,7 +1686,7 @@ config_host_data.set_quoted('CONFIG_QEMU_CONFDIR', get_option('prefix') / qemu_c
 config_host_data.set_quoted('CONFIG_QEMU_BUNDLE_DATADIR', qemu_datadir)
 config_host_data.set_quoted('CONFIG_QEMU_DESKTOPDIR', get_option('prefix') / qemu_desktopdir)
 config_host_data.set_quoted('CONFIG_QEMU_FIRMWAREPATH', get_option('prefix') / get_option('qemu_firmwarepath'))
-config_host_data.set_quoted('CONFIG_QEMU_HELPERDIR', get_option('prefix') / get_option('libexecdir'))
+config_host_data.set_quoted('CONFIG_QEMU_BUNDLE_HELPERDIR', get_option('libexecdir'))
 config_host_data.set_quoted('CONFIG_QEMU_BUNDLE_ICONDIR', qemu_icondir)
 config_host_data.set_quoted('CONFIG_QEMU_LOCALEDIR', get_option('prefix') / get_option('localedir'))
 config_host_data.set_quoted('CONFIG_QEMU_LOCALSTATEDIR', get_option('prefix') / get_option('localstatedir'))
@@ -3573,6 +3573,12 @@ if have_tools
                dependencies: [authz, crypto, io, qom, qemuutil,
                               libcap_ng, mpathpersist],
                install: true)
+
+    run_command('mkdir', '-p', qemu_bundledir / get_option('libexecdir'),
+                check: true)
+
+    run_command('ln', '-sf', '../../qemu-bridge-helper', qemu_bundledir / get_option('libexecdir'),
+                check: true)
   endif
 
   if have_ivshmem
diff --git a/net/tap.c b/net/tap.c
index b3ddfd4a74b..ea013ca3873 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -507,7 +507,11 @@ static int net_bridge_run_helper(const char *helper, const char *bridge,
     sigprocmask(SIG_BLOCK, &mask, &oldmask);
 
     if (!helper) {
-        helper = default_helper = get_relocated_path(DEFAULT_BRIDGE_HELPER);
+        helper = default_helper = find_bundle(DEFAULT_BUNDLE_BRIDGE_HELPER);
+        if (!helper) {
+            error_setg(errp, "bridge helper not found");
+            return -1;
+        }
     }
 
     if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) {
diff --git a/qemu-options.hx b/qemu-options.hx
index 377d22fbd82..1959db01061 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2665,7 +2665,7 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev,
     "                to configure it and 'dfile' (default=" DEFAULT_NETWORK_DOWN_SCRIPT ")\n"
     "                to deconfigure it\n"
     "                use '[down]script=no' to disable script execution\n"
-    "                use network helper 'helper' (default=" DEFAULT_BRIDGE_HELPER ") to\n"
+    "                use network helper 'helper' (default=" DEFAULT_BUNDLE_BRIDGE_HELPER ") to\n"
     "                configure it\n"
     "                use 'fd=h' to connect to an already opened TAP interface\n"
     "                use 'fds=x:y:...:z' to connect to already opened multiqueue capable TAP interfaces\n"
@@ -2684,7 +2684,7 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev,
     "-netdev bridge,id=str[,br=bridge][,helper=helper]\n"
     "                configure a host TAP network backend with ID 'str' that is\n"
     "                connected to a bridge (default=" DEFAULT_BRIDGE_INTERFACE ")\n"
-    "                using the program 'helper (default=" DEFAULT_BRIDGE_HELPER ")\n"
+    "                using the program 'helper (default=" DEFAULT_BUNDLE_BRIDGE_HELPER ")\n"
 #endif
 #ifdef __linux__
     "-netdev l2tpv3,id=str,src=srcaddr,dst=dstaddr[,srcport=srcport][,dstport=dstport]\n"
-- 
2.32.1 (Apple Git-133)