X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/a8f7e4b835a39b180ee728bfe8c44650096f99c0..530adb762573d9f37be07eb38d0ffc7b5c401e6a:/util.c

diff --git a/util.c b/util.c
index fd01283a..cb47c2a1 100644
--- a/util.c
+++ b/util.c
@@ -353,18 +353,33 @@ int robust_unlink(char *fname)
 #endif
 }
 
-int robust_rename(char *from, char *to)
+/* Returns 0 on success, -1 on most errors, and -2 if we got an error
+ * trying to copy the file across file systems. */
+int robust_rename(char *from, char *to, int mode)
 {
-#ifndef ETXTBSY
-	return do_rename(from, to);
-#else
-	int rc = do_rename(from, to);
-	if (rc == 0 || errno != ETXTBSY)
-		return rc;
-	if (robust_unlink(to) != 0)
-		return -1;
-	return do_rename(from, to);
+	int tries = 4;
+
+	while (tries--) {
+		if (do_rename(from, to) == 0)
+			return 0;
+
+		switch (errno) {
+#ifdef ETXTBSY
+		case ETXTBSY:
+			if (robust_unlink(to) != 0)
+				return -1;
+			break;
 #endif
+		case EXDEV:
+			if (copy_file(from, to, mode) != 0)
+				return -2;
+			do_unlink(from);
+			return 0;
+		default:
+			return -1;
+		}
+	}
+	return -1;
 }