[libvirt] [PATCH] macvtap: Fix error return values to -1 instead of 1

[Roopa Prabhu]

From: Roopa Prabhu <roprabhu at cisco.com>

Fixes some cases where 1 was being returned instead of -1.
There are still some inconsistencies in the file with respect
to what the return variable is initialized to. Can be fixed
as a separate patch if needed. The scope of this patch is just
to fix the return value 1. Did some basic sanity test.

Signed-off-by: Roopa Prabhu <roprabhu at cisco.com>
Reported-by: Eric Blake <eblake at cisco.com>
---
 src/util/macvtap.c |   22 ++++++++--------------
 1 files changed, 8 insertions(+), 14 deletions(-)


diff --git a/src/util/macvtap.c b/src/util/macvtap.c
index 7fd6eb5..f8b9d55 100644
--- a/src/util/macvtap.c
+++ b/src/util/macvtap.c
@@ -480,7 +480,7 @@ getPortProfileStatus(struct nlattr **tb, int32_t vf,
                      bool is8021Qbg,
                      uint16_t *status)
 {
-    int rc = 1;
+    int rc = -1;
     const char *msg = NULL;
     struct nlattr *tb_port[IFLA_PORT_MAX + 1] = { NULL, };
 
@@ -806,7 +806,7 @@ doPortProfileOpCommon(bool nltarget_kernel,
                     _("error %d during port-profile setlink on "
                       "interface %s (%d)"),
                     status, ifname, ifindex);
-            rc = 1;
+            rc = -1;
             break;
         }
 
@@ -867,7 +867,7 @@ doPortProfileOp8021Qbg(const char *ifname,
                        const virVirtualPortProfileParamsPtr virtPort,
                        enum virVirtualPortOp virtPortOp)
 {
-    int rc;
+    int rc = -1;
 
 # ifndef IFLA_VF_PORT_MAX
 
@@ -877,7 +877,6 @@ doPortProfileOp8021Qbg(const char *ifname,
     (void)virtPortOp;
     macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
                  _("Kernel VF Port support was missing at compile time."));
-    rc = 1;
 
 # else /* IFLA_VF_PORT_MAX */
 
@@ -893,10 +892,8 @@ doPortProfileOp8021Qbg(const char *ifname,
     int vf = PORT_SELF_VF;
 
     if (getPhysdevAndVlan(ifname, &physdev_ifindex, physdev_ifname,
-                          &vlanid) != 0) {
-        rc = 1;
+                          &vlanid) != 0)
         goto err_exit;
-    }
 
     if (vlanid < 0)
         vlanid = 0;
@@ -918,7 +915,6 @@ doPortProfileOp8021Qbg(const char *ifname,
     default:
         macvtapError(VIR_ERR_INTERNAL_ERROR,
                      _("operation type %d not supported"), virtPortOp);
-        rc = 1;
         goto err_exit;
     }
 
@@ -982,7 +978,7 @@ doPortProfileOp8021Qbh(const char *ifname,
                        const unsigned char *vm_uuid,
                        enum virVirtualPortOp virtPortOp)
 {
-    int rc;
+    int rc = -1;
 
 # ifndef IFLA_VF_PORT_MAX
 
@@ -993,7 +989,6 @@ doPortProfileOp8021Qbh(const char *ifname,
     (void)virtPortOp;
     macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
                  _("Kernel VF Port support was missing at compile time."));
-    rc = 1;
 
 # else /* IFLA_VF_PORT_MAX */
 
@@ -1008,10 +1003,9 @@ doPortProfileOp8021Qbh(const char *ifname,
     if (rc)
         goto err_exit;
 
-    if (ifaceGetIndex(true, physfndev, &ifindex) < 0) {
-        rc = 1;
+    rc = ifaceGetIndex(true, physfndev, &ifindex);
+    if (rc < 0)
         goto err_exit;
-    }
 
     switch (virtPortOp) {
     case PREASSOCIATE_RR:
@@ -1059,7 +1053,7 @@ doPortProfileOp8021Qbh(const char *ifname,
     default:
         macvtapError(VIR_ERR_INTERNAL_ERROR,
                      _("operation type %d not supported"), virtPortOp);
-        rc = 1;
+        rc = -1;
     }
 
 err_exit: