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 #ifdef NO_TRUSTABLE_FILEMODE
14 #define TEST_FILEMODE 0
16 #define TEST_FILEMODE 1
19 static void safe_create_dir(const char *dir, int share)
21 if (mkdir(dir, 0777) < 0) {
22 if (errno != EEXIST) {
27 else if (share && adjust_shared_perm(dir))
28 die("Could not make %s writable by group\n", dir);
31 static int copy_file(const char *dst, const char *src, int mode)
35 mode = (mode & 0111) ? 0777 : 0666;
36 if ((fdi = open(src, O_RDONLY)) < 0)
38 if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
42 status = copy_fd(fdi, fdo);
45 if (!status && adjust_shared_perm(dst))
51 static void copy_templates_1(char *path, int baselen,
52 char *template, int template_baselen,
57 /* Note: if ".git/hooks" file exists in the repository being
58 * re-initialized, /etc/core-git/templates/hooks/update would
59 * cause git-init-db to fail here. I think this is sane but
60 * it means that the set of templates we ship by default, along
61 * with the way the namespace under .git/ is organized, should
62 * be really carefully chosen.
64 safe_create_dir(path, 1);
65 while ((de = readdir(dir)) != NULL) {
66 struct stat st_git, st_template;
70 if (de->d_name[0] == '.')
72 namelen = strlen(de->d_name);
73 if ((PATH_MAX <= baselen + namelen) ||
74 (PATH_MAX <= template_baselen + namelen))
75 die("insanely long template name %s", de->d_name);
76 memcpy(path + baselen, de->d_name, namelen+1);
77 memcpy(template + template_baselen, de->d_name, namelen+1);
78 if (lstat(path, &st_git)) {
80 die("cannot stat %s", path);
85 if (lstat(template, &st_template))
86 die("cannot stat template %s", template);
88 if (S_ISDIR(st_template.st_mode)) {
89 DIR *subdir = opendir(template);
90 int baselen_sub = baselen + namelen;
91 int template_baselen_sub = template_baselen + namelen;
93 die("cannot opendir %s", template);
95 template[template_baselen_sub++] = '/';
97 template[template_baselen_sub] = 0;
98 copy_templates_1(path, baselen_sub,
99 template, template_baselen_sub,
105 else if (S_ISLNK(st_template.st_mode)) {
108 len = readlink(template, lnk, sizeof(lnk));
110 die("cannot readlink %s", template);
111 if (sizeof(lnk) <= len)
112 die("insanely long symlink %s", template);
114 if (symlink(lnk, path))
115 die("cannot symlink %s %s", lnk, path);
117 else if (S_ISREG(st_template.st_mode)) {
118 if (copy_file(path, template, st_template.st_mode))
119 die("cannot copy %s to %s", template, path);
122 error("ignoring template %s", template);
126 static void copy_templates(const char *git_dir, int len, const char *template_dir)
129 char template_path[PATH_MAX];
134 template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
136 template_dir = DEFAULT_GIT_TEMPLATE_DIR;
138 strcpy(template_path, template_dir);
139 template_len = strlen(template_path);
140 if (template_path[template_len-1] != '/') {
141 template_path[template_len++] = '/';
142 template_path[template_len] = 0;
144 dir = opendir(template_path);
146 fprintf(stderr, "warning: templates not found %s\n",
151 /* Make sure that template is from the correct vintage */
152 strcpy(template_path + template_len, "config");
153 repository_format_version = 0;
154 git_config_from_file(check_repository_format_version,
156 template_path[template_len] = 0;
158 if (repository_format_version &&
159 repository_format_version != GIT_REPO_VERSION) {
160 fprintf(stderr, "warning: not copying templates of "
161 "a wrong format version %d from '%s'\n",
162 repository_format_version,
168 memcpy(path, git_dir, len);
170 copy_templates_1(path, len,
171 template_path, template_len,
176 static int create_default_files(const char *git_dir, const char *template_path)
178 unsigned len = strlen(git_dir);
179 static char path[PATH_MAX];
180 unsigned char sha1[20];
182 char repo_version_string[10];
186 if (len > sizeof(path)-50)
187 die("insane git directory %s", git_dir);
188 memcpy(path, git_dir, len);
190 if (len && path[len-1] != '/')
194 * Create .git/refs/{heads,tags}
196 strcpy(path + len, "refs");
197 safe_create_dir(path, 1);
198 strcpy(path + len, "refs/heads");
199 safe_create_dir(path, 1);
200 strcpy(path + len, "refs/tags");
201 safe_create_dir(path, 1);
203 /* First copy the templates -- we might have the default
204 * config file there, in which case we would want to read
205 * from it after installing.
208 copy_templates(path, len, template_path);
210 git_config(git_default_config);
213 * We would have created the above under user's umask -- under
214 * shared-repository settings, we would need to fix them up.
216 if (shared_repository) {
218 adjust_shared_perm(path);
219 strcpy(path + len, "refs");
220 adjust_shared_perm(path);
221 strcpy(path + len, "refs/heads");
222 adjust_shared_perm(path);
223 strcpy(path + len, "refs/tags");
224 adjust_shared_perm(path);
228 * Create the default symlink from ".git/HEAD" to the "master"
229 * branch, if it does not exist yet.
231 strcpy(path + len, "HEAD");
232 reinit = !read_ref("HEAD", sha1);
234 if (create_symref("HEAD", "refs/heads/master") < 0)
238 /* This forces creation of new config file */
239 sprintf(repo_version_string, "%d", GIT_REPO_VERSION);
240 git_config_set("core.repositoryformatversion", repo_version_string);
243 strcpy(path + len, "config");
245 /* Check filemode trustability */
246 filemode = TEST_FILEMODE;
247 if (TEST_FILEMODE && !lstat(path, &st1)) {
249 filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
250 !lstat(path, &st2) &&
251 st1.st_mode != st2.st_mode);
253 git_config_set("core.filemode", filemode ? "true" : "false");
255 /* Enable logAllRefUpdates if a working tree is attached */
256 if (!is_bare_git_dir(git_dir))
257 git_config_set("core.logallrefupdates", "true");
261 static const char init_db_usage[] =
262 "git-init-db [--template=<template-directory>] [--shared]";
265 * If you want to, you can share the DB area with any number of branches.
266 * That has advantages: you can save space by sharing all the SHA1 objects.
267 * On the other hand, it might just make lookup slower and messier. You
268 * be the judge. The default case is to have one DB per managed directory.
270 int cmd_init_db(int argc, const char **argv, const char *prefix)
273 const char *sha1_dir;
274 const char *template_dir = NULL;
278 for (i = 1; i < argc; i++, argv++) {
279 const char *arg = argv[1];
280 if (!strncmp(arg, "--template=", 11))
281 template_dir = arg+11;
282 else if (!strcmp(arg, "--shared"))
283 shared_repository = PERM_GROUP;
284 else if (!strncmp(arg, "--shared=", 9))
285 shared_repository = git_config_perm("arg", arg+9);
287 usage(init_db_usage);
291 * Set up the default .git directory contents
293 git_dir = getenv(GIT_DIR_ENVIRONMENT);
295 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
296 safe_create_dir(git_dir, 0);
298 /* Check to see if the repository version is right.
299 * Note that a newly created repository does not have
300 * config file, so this will not fail. What we are catching
301 * is an attempt to reinitialize new repository with an old tool.
303 check_repository_format();
305 reinit = create_default_files(git_dir, template_dir);
308 * And set up the object store.
310 sha1_dir = get_object_directory();
311 len = strlen(sha1_dir);
312 path = xmalloc(len + 40);
313 memcpy(path, sha1_dir, len);
315 safe_create_dir(sha1_dir, 1);
316 strcpy(path+len, "/pack");
317 safe_create_dir(path, 1);
318 strcpy(path+len, "/info");
319 safe_create_dir(path, 1);
321 if (shared_repository) {
323 /* We do not spell "group" and such, so that
324 * the configuration can be read by older version
327 sprintf(buf, "%d", shared_repository);
328 git_config_set("core.sharedrepository", buf);
329 git_config_set("receive.denyNonFastforwards", "true");
332 printf("%s%s Git repository in %s/\n",
333 reinit ? "Reinitialized existing" : "Initialized empty",
334 shared_repository ? " shared" : "",