block/raw-posix: Catch fsync() errors

fsync() may fail, and that case should be handled.

Reported-by: László Érsek <lersek@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/block/raw-posix.c b/block/raw-posix.c
index d106fc456b..b1af77e47f 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1454,7 +1454,12 @@ static int raw_create(const char *filename, QemuOpts *opts, Error **errp)
             left -= result;
         }
         if (result >= 0) {
-            fsync(fd);
+            result = fsync(fd);
+            if (result < 0) {
+                result = -errno;
+                error_setg_errno(errp, -result,
+                                 "Could not flush new file to disk");
+            }
         }
         g_free(buf);
         break;