[PULL 47/57] net: relocate paths to helpers and scripts

[Paolo Bonzini <pbonzini@redhat.com>]

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 include/net/net.h |  4 ++--
 net/tap.c         | 26 +++++++++++++++++++-------
 2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/include/net/net.h b/include/net/net.h
index e7ef42d62b..897b2d7595 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -209,8 +209,8 @@ void netdev_add(QemuOpts *opts, Error **errp);
 int net_hub_id_for_client(NetClientState *nc, int *id);
 NetClientState *net_hub_port_find(int hub_id);
 
-#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
-#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
+#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_BRIDGE_INTERFACE "br0"
 
diff --git a/net/tap.c b/net/tap.c
index 14dc904fca..04ce72dd2f 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -478,6 +478,7 @@ static int net_bridge_run_helper(const char *helper, const char *bridge,
                                  Error **errp)
 {
     sigset_t oldmask, mask;
+    g_autofree char *default_helper = NULL;
     int pid, status;
     char *args[5];
     char **parg;
@@ -487,6 +488,10 @@ static int net_bridge_run_helper(const char *helper, const char *bridge,
     sigaddset(&mask, SIGCHLD);
     sigprocmask(SIG_BLOCK, &mask, &oldmask);
 
+    if (!helper) {
+        helper = default_helper = get_relocated_path(DEFAULT_BRIDGE_HELPER);
+    }
+
     if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) {
         error_setg_errno(errp, errno, "socketpair() failed");
         return -1;
@@ -588,8 +593,7 @@ int net_init_bridge(const Netdev *netdev, const char *name,
 
     assert(netdev->type == NET_CLIENT_DRIVER_BRIDGE);
     bridge = &netdev->u.bridge;
-
-    helper = bridge->has_helper ? bridge->helper : DEFAULT_BRIDGE_HELPER;
+    helper = bridge->has_helper ? bridge->helper : NULL;
     br     = bridge->has_br     ? bridge->br     : DEFAULT_BRIDGE_INTERFACE;
 
     fd = net_bridge_run_helper(helper, br, errp);
@@ -773,8 +777,8 @@ int net_init_tap(const Netdev *netdev, const char *name,
     const NetdevTapOptions *tap;
     int fd, vnet_hdr = 0, i = 0, queues;
     /* for the no-fd, no-helper case */
-    const char *script = NULL; /* suppress wrong "uninit'd use" gcc warning */
-    const char *downscript = NULL;
+    const char *script;
+    const char *downscript;
     Error *err = NULL;
     const char *vhostfdname;
     char ifname[128];
@@ -784,6 +788,8 @@ int net_init_tap(const Netdev *netdev, const char *name,
     tap = &netdev->u.tap;
     queues = tap->has_queues ? tap->queues : 1;
     vhostfdname = tap->has_vhostfd ? tap->vhostfd : NULL;
+    script = tap->has_script ? tap->script : NULL;
+    downscript = tap->has_downscript ? tap->downscript : NULL;
 
     /* QEMU hubs do not support multiqueue tap, in this case peer is set.
      * For -netdev, peer is always NULL. */
@@ -934,13 +940,19 @@ free_fail:
             return -1;
         }
     } else {
+        g_autofree char *default_script = NULL;
+        g_autofree char *default_downscript = NULL;
         if (tap->has_vhostfds) {
             error_setg(errp, "vhostfds= is invalid if fds= wasn't specified");
             return -1;
         }
-        script = tap->has_script ? tap->script : DEFAULT_NETWORK_SCRIPT;
-        downscript = tap->has_downscript ? tap->downscript :
-            DEFAULT_NETWORK_DOWN_SCRIPT;
+
+        if (!script) {
+            script = default_script = get_relocated_path(DEFAULT_NETWORK_SCRIPT);
+        }
+        if (!downscript) {
+            downscript = default_downscript = get_relocated_path(DEFAULT_NETWORK_SCRIPT);
+        }
 
         if (tap->has_ifname) {
             pstrcpy(ifname, sizeof ifname, tap->ifname);
-- 
2.26.2