diff options
| author | Fam Zheng <famz@redhat.com> | 2014-12-04 07:28:31 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2014-12-10 10:31:21 +0100 |
| commit | 73b7bcad439e0edaced05049897090cc10d84b5b (patch) | |
| tree | eca11a8b01734c6c4cc9a9ad6e804ec9261f16a0 | |
| parent | 8a3e0bc370de9274170b82f48b0393204c3fb43b (diff) | |
| download | qemu-73b7bcad439e0edaced05049897090cc10d84b5b.zip qemu-73b7bcad439e0edaced05049897090cc10d84b5b.tar.gz qemu-73b7bcad439e0edaced05049897090cc10d84b5b.tar.bz2 | |
vmdk: Clean up descriptor file reading
Zeroing a buffer that will be filled right after is not necessary, and
allocating a power of two + 1 is naughty.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Don Koch <dkoch@verizon.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 1417649314-13704-4-git-send-email-famz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block/vmdk.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index 4ee0aed..5f43226 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -557,8 +557,8 @@ static char *vmdk_read_desc(BlockDriverState *file, uint64_t desc_offset, return NULL; } - size = MIN(size, 1 << 20); /* avoid unbounded allocation */ - buf = g_malloc0(size + 1); + size = MIN(size, (1 << 20) - 1); /* avoid unbounded allocation */ + buf = g_malloc(size + 1); ret = bdrv_pread(file, desc_offset, buf, size); if (ret < 0) { @@ -566,6 +566,7 @@ static char *vmdk_read_desc(BlockDriverState *file, uint64_t desc_offset, g_free(buf); return NULL; } + buf[ret] = 0; return buf; } |