1 files changed, 91 insertions, 0 deletions
diff --git a/init-db.c b/init-db.c
new file mode 100644
index 000000000..1aa0d72d7
--- /dev/null
+++ b/init-db.c
@@ -0,0 +1,91 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+
+static void safe_create_dir(const char *dir)
+{
+	if (mkdir(dir, 0755) < 0) {
+		if (errno != EEXIST) {
+			perror(dir);
+			exit(1);
+		}
+	}
+}
+
+static void create_default_files(const char *git_dir)
+{
+	unsigned len = strlen(git_dir);
+	static char path[PATH_MAX];
+
+	if (len > sizeof(path)-50)
+		die("insane git directory %s", git_dir);
+	memcpy(path, git_dir, len);
+
+	if (len && path[len-1] != '/')
+		path[len++] = '/';
+
+	/*
+	 * Create .git/refs/{heads,tags}
+	 */
+	strcpy(path + len, "refs");
+	safe_create_dir(path);
+	strcpy(path + len, "refs/heads");
+	safe_create_dir(path);
+	strcpy(path + len, "refs/tags");
+	safe_create_dir(path);
+
+	/*
+	 * Create the default symlink from ".git/HEAD" to the "master"
+	 * branch
+	 */
+	strcpy(path + len, "HEAD");
+	if (symlink("refs/heads/master", path) < 0) {
+		if (errno != EEXIST) {
+			perror(path);
+			exit(1);
+		}
+	}
+}
+
+/*
+ * If you want to, you can share the DB area with any number of branches.
+ * That has advantages: you can save space by sharing all the SHA1 objects.
+ * On the other hand, it might just make lookup slower and messier. You
+ * be the judge.  The default case is to have one DB per managed directory.
+ */
+int main(int argc, char **argv)
+{
+	const char *git_dir;
+	const char *sha1_dir;
+	char *path;
+	int len, i;
+
+	/*
+	 * Set up the default .git directory contents
+	 */
+	git_dir = gitenv(GIT_DIR_ENVIRONMENT);
+	if (!git_dir) {
+		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
+		fprintf(stderr, "defaulting to local storage area\n");
+	}
+	safe_create_dir(git_dir);
+	create_default_files(git_dir);
+
+	/*
+	 * And set up the object store.
+	 */
+	sha1_dir = get_object_directory();
+	len = strlen(sha1_dir);
+	path = xmalloc(len + 40);
+	memcpy(path, sha1_dir, len);
+
+	safe_create_dir(sha1_dir);
+	for (i = 0; i < 256; i++) {
+		sprintf(path+len, "/%02x", i);
+		safe_create_dir(path);
+	}
+	return 0;
+}