From: Joel Rosdahl <joel@rosdahl.net>
Date: Thu, 28 May 2020 20:05:54 +0000 (+0200)
Subject: Create parent directories if hard linking fails with ENOENT
X-Git-Tag: v3.7.10~8
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=ec874b68d05981febb4685f0a3e4436b9bb54b1f;p=thirdparty%2Fccache.git

Create parent directories if hard linking fails with ENOENT

This makes hard linking work for an empty cache structure as well.
---

diff --git a/src/ccache.c b/src/ccache.c
index 7ad1f3b34..de026bced 100644
--- a/src/ccache.c
+++ b/src/ccache.c
@@ -1230,6 +1230,10 @@ do_copy_or_move_file_to_cache(const char *source, const char *dest, bool copy)
 		if (do_link) {
 			x_unlink(dest);
 			int ret = link(source, dest);
+			if (ret != 0 && errno == ENOENT) {
+				create_parent_dirs(dest);
+				ret = link(source, dest);
+			}
 			if (ret != 0) {
 				cc_log("Failed to link %s to %s: %s", source, dest, strerror(errno));
 				cc_log("Falling back to copying");