[Qemu-devel] [PATCH 07/18] block/bochs.c: fix warning with _FORTIFY_SOURCE

[Kirill A. Shutemov]

  CC    block/bochs.o
cc1: warnings being treated as errors
block/bochs.c: In function 'seek_to_sector':
block/bochs.c:202: error: ignoring return value of 'read', declared with 
attribute warn_unused_result
make: *** [block/bochs.o] Error 1

Signed-off-by: Kirill A. Shutemov <address@hidden>
---
 block/bochs.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/block/bochs.c b/block/bochs.c
index bac81c4..f6a18f2 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -199,7 +199,8 @@ static inline int seek_to_sector(BlockDriverState *bs, 
int64_t sector_num)
     // read in bitmap for current extent
     lseek(s->fd, bitmap_offset + (extent_offset / 8), SEEK_SET);
 
-    read(s->fd, &bitmap_entry, 1);
+    if (read(s->fd, &bitmap_entry, 1) != 1)
+        return -1;
 
     if (!((bitmap_entry >> (extent_offset % 8)) & 1))
     {
-- 
1.6.5.6