r56: check for BLKGETSIZE anyway, because it might not exist (and does not,

[nbd.git] / nbd-server.c

diff --git a/nbd-server.c b/nbd-server.c
index 212ed9f..6891a1a 100644 (file)
--- a/nbd-server.c
+++ b/nbd-server.c
@@ -409,13 +409,15 @@ off_t size_autodetect(int export)
 
 #ifdef HAVE_SYS_MOUNT_H
 #ifdef HAVE_SYS_IOCTL_H
+#ifdef BLKGETSIZE
        DEBUG("looking for export size with ioctl BLKGETSIZE\n");
        if (!ioctl(export, BLKGETSIZE, &es32) && es32) {
                es = (off_t)es32 * (off_t)512;
                return es;
        }
-#endif
-#endif
+#endif /* BLKGETSIZE */
+#endif /* HAVE_SYS_IOCTL_H */
+#endif /* HAVE_SYS_MOUNT_H */
 
        DEBUG("looking for export size with fstat\n");
        stat_buf.st_size = 0;