[libvirt] [PATCH] util: Fix coverity warings in virProcessGetAffinity

[Peter Krempa]

Refactor the code flow a bit more to clear coverity errors.

Store the cpu count in an intermediate variable and reuse it rather than
caluclating the index.
---
 src/util/virprocess.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/util/virprocess.c b/src/util/virprocess.c
index a38cb75..c07e5cd 100644
--- a/src/util/virprocess.c
+++ b/src/util/virprocess.c
@@ -474,12 +474,14 @@ virProcessGetAffinity(pid_t pid)
     size_t i;
     cpu_set_t *mask;
     size_t masklen;
+    size_t ncpus;
     virBitmapPtr ret = NULL;

 # ifdef CPU_ALLOC
     /* 262144 cpus ought to be enough for anyone */
-    masklen = CPU_ALLOC_SIZE(1024 << 8);
-    mask = CPU_ALLOC(1024 << 8);
+    ncpus = 1024 << 8;
+    masklen = CPU_ALLOC_SIZE(ncpus);
+    mask = CPU_ALLOC(ncpus);

     if (!mask) {
         virReportOOMError();
@@ -488,6 +490,7 @@ virProcessGetAffinity(pid_t pid)

     CPU_ZERO_S(masklen, mask);
 # else
+    ncpus = 1024;
     if (VIR_ALLOC(mask) < 0)
         return NULL;

@@ -501,10 +504,10 @@ virProcessGetAffinity(pid_t pid)
         goto cleanup;
     }

-    if (!(ret = virBitmapNew(masklen * 8)))
+    if (!(ret = virBitmapNew(ncpus)))
           goto cleanup;

-    for (i = 0; i < masklen * 8; i++) {
+    for (i = 0; i < ncpus; i++) {
 # ifdef CPU_ALLOC
         if (CPU_ISSET_S(i, masklen, mask))
             ignore_value(virBitmapSetBit(ret, i));
-- 
2.4.1