2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
9 #ifndef DEFAULT_GIT_TEMPLATE_DIR
10 #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates/"
13 static void safe_create_dir(const char *dir, int share)
15 if (mkdir(dir, 0777) < 0) {
16 if (errno != EEXIST) {
21 else if (share && adjust_shared_perm(dir))
22 die("Could not make %s writable by group\n", dir);
25 static int copy_file(const char *dst, const char *src, int mode)
29 mode = (mode & 0111) ? 0777 : 0666;
30 if ((fdi = open(src, O_RDONLY)) < 0)
32 if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
36 status = copy_fd(fdi, fdo);
39 if (!status && adjust_shared_perm(dst))
45 static void copy_templates_1(char *path, int baselen,
46 char *template, int template_baselen,
51 /* Note: if ".git/hooks" file exists in the repository being
52 * re-initialized, /etc/core-git/templates/hooks/update would
53 * cause git-init-db to fail here. I think this is sane but
54 * it means that the set of templates we ship by default, along
55 * with the way the namespace under .git/ is organized, should
56 * be really carefully chosen.
58 safe_create_dir(path, 1);
59 while ((de = readdir(dir)) != NULL) {
60 struct stat st_git, st_template;
64 if (de->d_name[0] == '.')
66 namelen = strlen(de->d_name);
67 if ((PATH_MAX <= baselen + namelen) ||
68 (PATH_MAX <= template_baselen + namelen))
69 die("insanely long template name %s", de->d_name);
70 memcpy(path + baselen, de->d_name, namelen+1);
71 memcpy(template + template_baselen, de->d_name, namelen+1);
72 if (lstat(path, &st_git)) {
74 die("cannot stat %s", path);
79 if (lstat(template, &st_template))
80 die("cannot stat template %s", template);
82 if (S_ISDIR(st_template.st_mode)) {
83 DIR *subdir = opendir(template);
84 int baselen_sub = baselen + namelen;
85 int template_baselen_sub = template_baselen + namelen;
87 die("cannot opendir %s", template);
89 template[template_baselen_sub++] = '/';
91 template[template_baselen_sub] = 0;
92 copy_templates_1(path, baselen_sub,
93 template, template_baselen_sub,
99 else if (S_ISLNK(st_template.st_mode)) {
102 len = readlink(template, lnk, sizeof(lnk));
104 die("cannot readlink %s", template);
105 if (sizeof(lnk) <= len)
106 die("insanely long symlink %s", template);
108 if (symlink(lnk, path))
109 die("cannot symlink %s %s", lnk, path);
111 else if (S_ISREG(st_template.st_mode)) {
112 if (copy_file(path, template, st_template.st_mode))
113 die("cannot copy %s to %s", template, path);
116 error("ignoring template %s", template);
120 static void copy_templates(const char *git_dir, int len, const char *template_dir)
123 char template_path[PATH_MAX];
128 template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
130 template_dir = DEFAULT_GIT_TEMPLATE_DIR;
132 strcpy(template_path, template_dir);
133 template_len = strlen(template_path);
134 if (template_path[template_len-1] != '/') {
135 template_path[template_len++] = '/';
136 template_path[template_len] = 0;
138 dir = opendir(template_path);
140 fprintf(stderr, "warning: templates not found %s\n",
145 /* Make sure that template is from the correct vintage */
146 strcpy(template_path + template_len, "config");
147 repository_format_version = 0;
148 git_config_from_file(check_repository_format_version,
150 template_path[template_len] = 0;
152 if (repository_format_version &&
153 repository_format_version != GIT_REPO_VERSION) {
154 fprintf(stderr, "warning: not copying templates of "
155 "a wrong format version %d from '%s'\n",
156 repository_format_version,
162 memcpy(path, git_dir, len);
164 copy_templates_1(path, len,
165 template_path, template_len,
170 static int create_default_files(const char *git_dir, const char *template_path)
172 unsigned len = strlen(git_dir);
173 static char path[PATH_MAX];
174 unsigned char sha1[20];
176 char repo_version_string[10];
179 if (len > sizeof(path)-50)
180 die("insane git directory %s", git_dir);
181 memcpy(path, git_dir, len);
183 if (len && path[len-1] != '/')
187 * Create .git/refs/{heads,tags}
189 strcpy(path + len, "refs");
190 safe_create_dir(path, 1);
191 strcpy(path + len, "refs/heads");
192 safe_create_dir(path, 1);
193 strcpy(path + len, "refs/tags");
194 safe_create_dir(path, 1);
196 /* First copy the templates -- we might have the default
197 * config file there, in which case we would want to read
198 * from it after installing.
201 copy_templates(path, len, template_path);
203 git_config(git_default_config);
206 * We would have created the above under user's umask -- under
207 * shared-repository settings, we would need to fix them up.
209 if (shared_repository) {
211 adjust_shared_perm(path);
212 strcpy(path + len, "refs");
213 adjust_shared_perm(path);
214 strcpy(path + len, "refs/heads");
215 adjust_shared_perm(path);
216 strcpy(path + len, "refs/tags");
217 adjust_shared_perm(path);
221 * Create the default symlink from ".git/HEAD" to the "master"
222 * branch, if it does not exist yet.
224 strcpy(path + len, "HEAD");
225 reinit = !read_ref("HEAD", sha1);
227 if (create_symref("HEAD", "refs/heads/master") < 0)
231 /* This forces creation of new config file */
232 sprintf(repo_version_string, "%d", GIT_REPO_VERSION);
233 git_config_set("core.repositoryformatversion", repo_version_string);
236 strcpy(path + len, "config");
238 /* Check filemode trustability */
239 if (!lstat(path, &st1)) {
241 int filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
242 !lstat(path, &st2) &&
243 st1.st_mode != st2.st_mode);
244 git_config_set("core.filemode",
245 filemode ? "true" : "false");
248 /* Enable logAllRefUpdates if a working tree is attached */
249 if (!is_bare_git_dir(git_dir))
250 git_config_set("core.logallrefupdates", "true");
254 static const char init_db_usage[] =
255 "git-init-db [--template=<template-directory>] [--shared]";
258 * If you want to, you can share the DB area with any number of branches.
259 * That has advantages: you can save space by sharing all the SHA1 objects.
260 * On the other hand, it might just make lookup slower and messier. You
261 * be the judge. The default case is to have one DB per managed directory.
263 int cmd_init_db(int argc, const char **argv, const char *prefix)
266 const char *sha1_dir;
267 const char *template_dir = NULL;
271 for (i = 1; i < argc; i++, argv++) {
272 const char *arg = argv[1];
273 if (!strncmp(arg, "--template=", 11))
274 template_dir = arg+11;
275 else if (!strcmp(arg, "--shared"))
276 shared_repository = PERM_GROUP;
277 else if (!strncmp(arg, "--shared=", 9))
278 shared_repository = git_config_perm("arg", arg+9);
280 usage(init_db_usage);
284 * Set up the default .git directory contents
286 git_dir = getenv(GIT_DIR_ENVIRONMENT);
288 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
289 safe_create_dir(git_dir, 0);
291 /* Check to see if the repository version is right.
292 * Note that a newly created repository does not have
293 * config file, so this will not fail. What we are catching
294 * is an attempt to reinitialize new repository with an old tool.
296 check_repository_format();
298 reinit = create_default_files(git_dir, template_dir);
301 * And set up the object store.
303 sha1_dir = get_object_directory();
304 len = strlen(sha1_dir);
305 path = xmalloc(len + 40);
306 memcpy(path, sha1_dir, len);
308 safe_create_dir(sha1_dir, 1);
309 strcpy(path+len, "/pack");
310 safe_create_dir(path, 1);
311 strcpy(path+len, "/info");
312 safe_create_dir(path, 1);
314 if (shared_repository) {
316 /* We do not spell "group" and such, so that
317 * the configuration can be read by older version
320 sprintf(buf, "%d", shared_repository);
321 git_config_set("core.sharedrepository", buf);
322 git_config_set("receive.denyNonFastforwards", "true");
325 printf("%s%s Git repository in %s/\n",
326 reinit ? "Reinitialized existing" : "Initialized empty",
327 shared_repository ? " shared" : "",