X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=init-db.c;h=ff294960f29c8763e34e28060dee04b799bd55fd;hb=7f732c632ff7a1adc2309257becdc0c1fe76b514;hp=1fb3f7fa79136f296ece9e04f6fdbf34bb40eeeb;hpb=2b64f88f09ae2169ec85652b46897574e352936d;p=git.git

diff --git a/init-db.c b/init-db.c
index 1fb3f7fa..ff294960 100644
--- a/init-db.c
+++ b/init-db.c
@@ -9,7 +9,7 @@
 #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates/"
 #endif
 
-static void safe_create_dir(const char *dir)
+static void safe_create_dir(const char *dir, int share)
 {
 	if (mkdir(dir, 0777) < 0) {
 		if (errno != EEXIST) {
@@ -17,11 +17,13 @@ static void safe_create_dir(const char *dir)
 			exit(1);
 		}
 	}
+	else if (share && adjust_shared_perm(dir))
+		die("Could not make %s writable by group\n", dir);
 }
 
 static int copy_file(const char *dst, const char *src, int mode)
 {
-	int fdi, fdo;
+	int fdi, fdo, status;
 
 	mode = (mode & 0111) ? 0777 : 0666;
 	if ((fdi = open(src, O_RDONLY)) < 0)
@@ -30,30 +32,13 @@ static int copy_file(const char *dst, const char *src, int mode)
 		close(fdi);
 		return fdo;
 	}
-	while (1) {
-		char buf[BUFSIZ];
-		ssize_t leni, leno, ofs;
-		leni = read(fdi, buf, sizeof(buf));
-		if (leni < 0) {
-		error_return:
-			close(fdo);
-			close(fdi);
-			return -1;
-		}
-		if (!leni)
-			break;
-		ofs = 0;
-		do {
-			leno = write(fdo, buf+ofs, leni);
-			if (leno < 0)
-				goto error_return;
-			leni -= leno;
-			ofs += leno;
-		} while (0 < leni);
-	}
+	status = copy_fd(fdi, fdo);
 	close(fdo);
-	close(fdi);
-	return 0;
+
+	if (!status && adjust_shared_perm(dst))
+		return -1;
+
+	return status;
 }
 
 static void copy_templates_1(char *path, int baselen,
@@ -69,7 +54,7 @@ static void copy_templates_1(char *path, int baselen,
 	 * with the way the namespace under .git/ is organized, should
 	 * be really carefully chosen.
 	 */
-	safe_create_dir(path);
+	safe_create_dir(path, 1);
 	while ((de = readdir(dir)) != NULL) {
 		struct stat st_git, st_template;
 		int namelen;
@@ -153,18 +138,38 @@ static void copy_templates(const char *git_dir, int len, char *template_dir)
 		return;
 	}
 
+	/* Make sure that template is from the correct vintage */
+	strcpy(template_path + template_len, "config");
+	repository_format_version = 0;
+	git_config_from_file(check_repository_format_version,
+			     template_path);
+	template_path[template_len] = 0;
+
+	if (repository_format_version &&
+	    repository_format_version != GIT_REPO_VERSION) {
+		fprintf(stderr, "warning: not copying templates of "
+			"a wrong format version %d from '%s'\n",
+			repository_format_version,
+			template_dir);
+		closedir(dir);
+		return;
+	}
+
 	memcpy(path, git_dir, len);
+	path[len] = 0;
 	copy_templates_1(path, len,
 			 template_path, template_len,
 			 dir);
 	closedir(dir);
 }
 
-static void create_default_files(const char *git_dir,
-				 char *template_path)
+static void create_default_files(const char *git_dir, char *template_path)
 {
 	unsigned len = strlen(git_dir);
 	static char path[PATH_MAX];
+	unsigned char sha1[20];
+	struct stat st1;
+	char repo_version_string[10];
 
 	if (len > sizeof(path)-50)
 		die("insane git directory %s", git_dir);
@@ -177,28 +182,51 @@ static void create_default_files(const char *git_dir,
 	 * Create .git/refs/{heads,tags}
 	 */
 	strcpy(path + len, "refs");
-	safe_create_dir(path);
+	safe_create_dir(path, 1);
 	strcpy(path + len, "refs/heads");
-	safe_create_dir(path);
+	safe_create_dir(path, 1);
 	strcpy(path + len, "refs/tags");
-	safe_create_dir(path);
+	safe_create_dir(path, 1);
+
+	/* First copy the templates -- we might have the default
+	 * config file there, in which case we would want to read
+	 * from it after installing.
+	 */
+	path[len] = 0;
+	copy_templates(path, len, template_path);
+
+	git_config(git_default_config);
 
 	/*
 	 * Create the default symlink from ".git/HEAD" to the "master"
-	 * branch
+	 * branch, if it does not exist yet.
 	 */
 	strcpy(path + len, "HEAD");
-	if (symlink("refs/heads/master", path) < 0) {
-		if (errno != EEXIST) {
-			perror(path);
+	if (read_ref(path, sha1) < 0) {
+		if (create_symref(path, "refs/heads/master") < 0)
 			exit(1);
-		}
 	}
-	copy_templates(path, len, template_path);
+
+	/* This forces creation of new config file */
+	sprintf(repo_version_string, "%d", GIT_REPO_VERSION);
+	git_config_set("core.repositoryformatversion", repo_version_string);
+
+	path[len] = 0;
+	strcpy(path + len, "config");
+
+	/* Check filemode trustability */
+	if (!lstat(path, &st1)) {
+		struct stat st2;
+		int filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
+				!lstat(path, &st2) &&
+				st1.st_mode != st2.st_mode);
+		git_config_set("core.filemode",
+			       filemode ? "true" : "false");
+	}
 }
 
 static const char init_db_usage[] =
-"git-init-db [--template=<template-directory>]";
+"git-init-db [--template=<template-directory>] [--shared]";
 
 /*
  * If you want to, you can share the DB area with any number of branches.
@@ -215,10 +243,10 @@ int main(int argc, char **argv)
 
 	for (i = 1; i < argc; i++, argv++) {
 		char *arg = argv[1];
-		if (arg[0] != '-')
-			break;
-		else if (!strncmp(arg, "--template=", 11))
+		if (!strncmp(arg, "--template=", 11))
 			template_dir = arg+11;
+		else if (!strcmp(arg, "--shared"))
+			shared_repository = 1;
 		else
 			die(init_db_usage);
 	}
@@ -226,12 +254,20 @@ int main(int argc, char **argv)
 	/*
 	 * Set up the default .git directory contents
 	 */
-	git_dir = gitenv(GIT_DIR_ENVIRONMENT);
+	git_dir = getenv(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);
+	safe_create_dir(git_dir, 0);
+
+	/* Check to see if the repository version is right.
+	 * Note that a newly created repository does not have
+	 * config file, so this will not fail.  What we are catching
+	 * is an attempt to reinitialize new repository with an old tool.
+	 */
+	check_repository_format();
+
 	create_default_files(git_dir, template_dir);
 
 	/*
@@ -242,12 +278,14 @@ int main(int argc, char **argv)
 	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);
-	}
+	safe_create_dir(sha1_dir, 1);
 	strcpy(path+len, "/pack");
-	safe_create_dir(path);
+	safe_create_dir(path, 1);
+	strcpy(path+len, "/info");
+	safe_create_dir(path, 1);
+
+	if (shared_repository)
+		git_config_set("core.sharedRepository", "true");
+
 	return 0;
 }