clone: allow for linking in local clone

If requested, git_clone_local_into() will try to link the object files
instead of copying them.

This only works on non-Windows (since it doesn't have this) when both
are on the same filesystem (which are unix semantics).

1 files changed, 59 insertions, 0 deletions

diff --git a/tests/clone/local.c b/tests/clone/local.c
index 7b273b23a..289c50aaf 100644
--- a/tests/clone/local.c
+++ b/tests/clone/local.c
@@ -3,6 +3,8 @@
 #include "git2/clone.h"
 #include "clone.h"
 #include "buffer.h"
+#include "path.h"
+#include "posix.h"
 
 void assert_clone(const char *path, git_clone_local_t opt, int val)
 {
@@ -29,3 +31,60 @@ void test_clone_local__should_clone_local(void)
 	cl_assert_equal_i(true,  git_clone__should_clone_local(path, GIT_CLONE_LOCAL_NO_LINKS));
 	cl_assert_equal_i(false, git_clone__should_clone_local(path, GIT_CLONE_NO_LOCAL));
 }
+
+void test_clone_local__hardlinks(void)
+{
+	git_repository *repo;
+	git_remote *remote;
+	git_signature *sig;
+	git_buf buf = GIT_BUF_INIT;
+	struct stat st;
+
+	cl_git_pass(git_repository_init(&repo, "./clone.git", true));
+	cl_git_pass(git_remote_create(&remote, repo, "origin", cl_fixture("testrepo.git")));
+	cl_git_pass(git_signature_now(&sig, "foo", "bar"));
+	cl_git_pass(git_clone_local_into(repo, remote, NULL, NULL, true, sig));
+
+	git_remote_free(remote);
+	git_repository_free(repo);
+
+	/*
+	 * We can't rely on the link option taking effect in the first
+	 * clone, since the temp dir and fixtures dir may reside on
+	 * different filesystems. We perform the second clone
+	 * side-by-side to make sure this is the case.
+	 */
+
+	cl_git_pass(git_repository_init(&repo, "./clone2.git", true));
+	cl_git_pass(git_buf_puts(&buf, cl_git_path_url("clone.git")));
+	cl_git_pass(git_remote_create(&remote, repo, "origin", buf.ptr));
+	cl_git_pass(git_clone_local_into(repo, remote, NULL, NULL, true, sig));
+
+#ifndef GIT_WIN32
+	git_buf_clear(&buf);
+	cl_git_pass(git_buf_join_n(&buf, '/', 4, git_repository_path(repo), "objects", "08", "b041783f40edfe12bb406c9c9a8a040177c125"));
+
+	cl_git_pass(p_stat(buf.ptr, &st));
+	cl_assert(st.st_nlink > 1);
+#endif
+
+	git_remote_free(remote);
+	git_repository_free(repo);
+	git_buf_clear(&buf);
+
+	cl_git_pass(git_repository_init(&repo, "./clone3.git", true));
+	cl_git_pass(git_buf_puts(&buf, cl_git_path_url("clone.git")));
+	cl_git_pass(git_remote_create(&remote, repo, "origin", buf.ptr));
+	cl_git_pass(git_clone_local_into(repo, remote, NULL, NULL, false, sig));
+
+	git_buf_clear(&buf);
+	cl_git_pass(git_buf_join_n(&buf, '/', 4, git_repository_path(repo), "objects", "08", "b041783f40edfe12bb406c9c9a8a040177c125"));
+
+	cl_git_pass(p_stat(buf.ptr, &st));
+	cl_assert_equal_i(1, st.st_nlink);
+
+	git_buf_free(&buf);
+	git_signature_free(sig);
+	git_remote_free(remote);
+	git_repository_free(repo);
+}