fdformat: check writing to a file descriptor was successful

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

diff --git a/disk-utils/fdformat.c b/disk-utils/fdformat.c
index 509a6055b996c9036a7c55380870a2feb166626d..b50ba30188aa370e5c7a2d30ba8198db20967d20 100644 (file)
--- a/disk-utils/fdformat.c
+++ b/disk-utils/fdformat.c
@@ -159,7 +159,8 @@ int main(int argc, char **argv)
               (param.head == 2) ? _("Double") : _("Single"),
               param.track, param.sect, param.size >> 1);
        format_disk(ctrl);
-       close(ctrl);
+       if (close_fd(ctrl) != 0)
+               err(EXIT_FAILURE, _("write failed"));
 
        if (verify)
                verify_disk(argv[0]);