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From 931d28d0c1c1015df16fbffb8422895497193a78 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Mon, 15 Feb 2016 09:28:21 +0100
Subject: [PATCH 08/18] block: vmdk - make ret variable usage clear

RH-Author: Fam Zheng <famz@redhat.com>
Message-id: <1455528511-9357-9-git-send-email-famz@redhat.com>
Patchwork-id: 69174
O-Subject: [RHEL-7.3 qemu-kvm PATCH 08/18] block: vmdk - make ret variable usage clear
Bugzilla: 1299250
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Markus Armbruster <armbru@redhat.com>

From: Jeff Cody <jcody@redhat.com>

BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1299250

Keep the variable 'ret' something that is returned by the function it is
defined in.  For the return value of 'sscanf', use a more meaningful
variable name.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 395a22fae064df64d987d703cf70ae0f57306be8)
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 block/vmdk.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/block/vmdk.c b/block/vmdk.c
index 1247ea4..3351782 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -788,6 +788,7 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs,
                               const char *desc_file_path, Error **errp)
 {
     int ret;
+    int matches;
     char access[11];
     char type[11];
     char fname[512];
@@ -799,6 +800,7 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs,
     BDRVVmdkState *s = bs->opaque;
     VmdkExtent *extent;
 
+
     while (*p) {
         /* parse extent line in one of below formats:
          *
@@ -808,23 +810,23 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs,
          * RW [size in sectors] VMFSSPARSE "file-name.vmdk"
          */
         flat_offset = -1;
-        ret = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64,
-                access, &sectors, type, fname, &flat_offset);
-        if (ret < 4 || strcmp(access, "RW")) {
+        matches = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64,
+                         access, &sectors, type, fname, &flat_offset);
+        if (matches < 4 || strcmp(access, "RW")) {
             goto next_line;
         } else if (!strcmp(type, "FLAT")) {
-            if (ret != 5 || flat_offset < 0) {
+            if (matches != 5 || flat_offset < 0) {
                 error_setg(errp, "Invalid extent lines: \n%s", p);
                 return -EINVAL;
             }
         } else if (!strcmp(type, "VMFS")) {
-            if (ret == 4) {
+            if (matches == 4) {
                 flat_offset = 0;
             } else {
                 error_setg(errp, "Invalid extent lines:\n%s", p);
                 return -EINVAL;
             }
-        } else if (ret != 4) {
+        } else if (matches != 4) {
             error_setg(errp, "Invalid extent lines:\n%s", p);
             return -EINVAL;
         }
-- 
1.8.3.1