f375e62ad9
Fix libvirt + seccomp combo (bz #855162) Fix scsi hotplug crash (bz #879657) Fix QOM refcount crash (bz #881486)
76 lines
2.1 KiB
Diff
76 lines
2.1 KiB
Diff
From 928865de80da6a23e6f0d4d86187c52f6c940255 Mon Sep 17 00:00:00 2001
|
|
From: Stefan Weil <sw@weilnetz.de>
|
|
Date: Fri, 17 Aug 2012 15:23:24 +0200
|
|
Subject: [PATCH] vdi: Fix warning from clang
|
|
|
|
ccc-analyzer reports these warnings:
|
|
|
|
block/vdi.c:704:13: warning: Dereference of null pointer
|
|
bmap[i] = VDI_UNALLOCATED;
|
|
^
|
|
block/vdi.c:702:13: warning: Dereference of null pointer
|
|
bmap[i] = i;
|
|
^
|
|
|
|
Moving some code into the if block fixes this.
|
|
It also avoids calling function write with 0 bytes of data.
|
|
|
|
Signed-off-by: Stefan Weil <sw@weilnetz.de>
|
|
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
|
(cherry picked from commit 514f21a5d4613e495adc2e2dd48f18091454efb8)
|
|
|
|
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
|
|
---
|
|
block/vdi.c | 25 ++++++++++++-------------
|
|
1 file changed, 12 insertions(+), 13 deletions(-)
|
|
|
|
diff --git a/block/vdi.c b/block/vdi.c
|
|
index c4f1529..550cf58 100644
|
|
--- a/block/vdi.c
|
|
+++ b/block/vdi.c
|
|
@@ -628,7 +628,6 @@ static int vdi_create(const char *filename, QEMUOptionParameter *options)
|
|
VdiHeader header;
|
|
size_t i;
|
|
size_t bmap_size;
|
|
- uint32_t *bmap;
|
|
|
|
logout("\n");
|
|
|
|
@@ -693,21 +692,21 @@ static int vdi_create(const char *filename, QEMUOptionParameter *options)
|
|
result = -errno;
|
|
}
|
|
|
|
- bmap = NULL;
|
|
if (bmap_size > 0) {
|
|
- bmap = (uint32_t *)g_malloc0(bmap_size);
|
|
- }
|
|
- for (i = 0; i < blocks; i++) {
|
|
- if (image_type == VDI_TYPE_STATIC) {
|
|
- bmap[i] = i;
|
|
- } else {
|
|
- bmap[i] = VDI_UNALLOCATED;
|
|
+ uint32_t *bmap = g_malloc0(bmap_size);
|
|
+ for (i = 0; i < blocks; i++) {
|
|
+ if (image_type == VDI_TYPE_STATIC) {
|
|
+ bmap[i] = i;
|
|
+ } else {
|
|
+ bmap[i] = VDI_UNALLOCATED;
|
|
+ }
|
|
}
|
|
+ if (write(fd, bmap, bmap_size) < 0) {
|
|
+ result = -errno;
|
|
+ }
|
|
+ g_free(bmap);
|
|
}
|
|
- if (write(fd, bmap, bmap_size) < 0) {
|
|
- result = -errno;
|
|
- }
|
|
- g_free(bmap);
|
|
+
|
|
if (image_type == VDI_TYPE_STATIC) {
|
|
if (ftruncate(fd, sizeof(header) + bmap_size + blocks * block_size)) {
|
|
result = -errno;
|
|
--
|
|
1.8.0.2
|
|
|