X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=afh.c;h=567b560a038f0923a663005b447a0fc688c57b2a;hp=69b834d2c507fa5944dc3871838d555b4317115b;hb=442a3320ff155d09b990c0ee2abace399cbcd6dd;hpb=25ca76ec354120efa561879f50c486340e14d0ca

diff --git a/afh.c b/afh.c
index 69b834d2..567b560a 100644
--- a/afh.c
+++ b/afh.c
@@ -113,6 +113,24 @@ static int rewrite_tags(const char *name, int input_fd, void *map,
 			goto out;
 	}
 	ret = xrename(tmp_name, name);
+	if (ret < 0)
+		goto out;
+	if (OPT_GIVEN(PRESERVE)) {
+		struct timespec times[2]; /* [0]: atime, [1]: mtime */
+		times[0].tv_nsec = UTIME_OMIT;
+		times[1] = sb.st_mtim;
+		/*
+		 * We might well have written a file of identical size. If we
+		 * keep the mtime as well, we might fool backup applications
+		 * like rsync which skip files whose size and mtime haven't
+		 * changed. So we change the mtime slightly.
+		 */
+		times[1].tv_sec++;
+		if (futimens(output_fd, times) < 0) {
+			ret = -ERRNO_TO_PARA_ERROR(errno);
+			goto out;
+		}
+	}
 out:
 	if (ret < 0 && output_fd >= 0)
 		unlink(tmp_name); /* ignore errors */