2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
8 #ifndef DEFAULT_GIT_TEMPLATE_DIR
9 #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates/"
12 static void safe_create_dir(const char *dir, int share)
14 if (mkdir(dir, 0777) < 0) {
15 if (errno != EEXIST) {
20 else if (share && adjust_shared_perm(dir))
21 die("Could not make %s writable by group\n", dir);
24 static int copy_file(const char *dst, const char *src, int mode)
28 mode = (mode & 0111) ? 0777 : 0666;
29 if ((fdi = open(src, O_RDONLY)) < 0)
31 if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
35 status = copy_fd(fdi, fdo);
38 if (!status && adjust_shared_perm(dst))
44 static void copy_templates_1(char *path, int baselen,
45 char *template, int template_baselen,
50 /* Note: if ".git/hooks" file exists in the repository being
51 * re-initialized, /etc/core-git/templates/hooks/update would
52 * cause git-init-db to fail here. I think this is sane but
53 * it means that the set of templates we ship by default, along
54 * with the way the namespace under .git/ is organized, should
55 * be really carefully chosen.
57 safe_create_dir(path, 1);
58 while ((de = readdir(dir)) != NULL) {
59 struct stat st_git, st_template;
63 if (de->d_name[0] == '.')
65 namelen = strlen(de->d_name);
66 if ((PATH_MAX <= baselen + namelen) ||
67 (PATH_MAX <= template_baselen + namelen))
68 die("insanely long template name %s", de->d_name);
69 memcpy(path + baselen, de->d_name, namelen+1);
70 memcpy(template + template_baselen, de->d_name, namelen+1);
71 if (lstat(path, &st_git)) {
73 die("cannot stat %s", path);
78 if (lstat(template, &st_template))
79 die("cannot stat template %s", template);
81 if (S_ISDIR(st_template.st_mode)) {
82 DIR *subdir = opendir(template);
83 int baselen_sub = baselen + namelen;
84 int template_baselen_sub = template_baselen + namelen;
86 die("cannot opendir %s", template);
88 template[template_baselen_sub++] = '/';
90 template[template_baselen_sub] = 0;
91 copy_templates_1(path, baselen_sub,
92 template, template_baselen_sub,
98 else if (S_ISLNK(st_template.st_mode)) {
101 len = readlink(template, lnk, sizeof(lnk));
103 die("cannot readlink %s", template);
104 if (sizeof(lnk) <= len)
105 die("insanely long symlink %s", template);
107 if (symlink(lnk, path))
108 die("cannot symlink %s %s", lnk, path);
110 else if (S_ISREG(st_template.st_mode)) {
111 if (copy_file(path, template, st_template.st_mode))
112 die("cannot copy %s to %s", template, path);
115 error("ignoring template %s", template);
119 static void copy_templates(const char *git_dir, int len, char *template_dir)
122 char template_path[PATH_MAX];
127 template_dir = DEFAULT_GIT_TEMPLATE_DIR;
128 strcpy(template_path, template_dir);
129 template_len = strlen(template_path);
130 if (template_path[template_len-1] != '/') {
131 template_path[template_len++] = '/';
132 template_path[template_len] = 0;
134 dir = opendir(template_path);
136 fprintf(stderr, "warning: templates not found %s\n",
141 /* Make sure that template is from the correct vintage */
142 strcpy(template_path + template_len, "config");
143 repository_format_version = 0;
144 git_config_from_file(check_repository_format_version,
146 template_path[template_len] = 0;
148 if (repository_format_version &&
149 repository_format_version != GIT_REPO_VERSION) {
150 fprintf(stderr, "warning: not copying templates of "
151 "a wrong format version %d from '%s'\n",
152 repository_format_version,
158 memcpy(path, git_dir, len);
160 copy_templates_1(path, len,
161 template_path, template_len,
166 static void create_default_files(const char *git_dir, char *template_path)
168 unsigned len = strlen(git_dir);
169 static char path[PATH_MAX];
170 unsigned char sha1[20];
172 char repo_version_string[10];
174 if (len > sizeof(path)-50)
175 die("insane git directory %s", git_dir);
176 memcpy(path, git_dir, len);
178 if (len && path[len-1] != '/')
182 * Create .git/refs/{heads,tags}
184 strcpy(path + len, "refs");
185 safe_create_dir(path, 1);
186 strcpy(path + len, "refs/heads");
187 safe_create_dir(path, 1);
188 strcpy(path + len, "refs/tags");
189 safe_create_dir(path, 1);
191 /* First copy the templates -- we might have the default
192 * config file there, in which case we would want to read
193 * from it after installing.
196 copy_templates(path, len, template_path);
198 git_config(git_default_config);
201 * Create the default symlink from ".git/HEAD" to the "master"
202 * branch, if it does not exist yet.
204 strcpy(path + len, "HEAD");
205 if (read_ref(path, sha1) < 0) {
206 if (create_symref(path, "refs/heads/master") < 0)
210 /* This forces creation of new config file */
211 sprintf(repo_version_string, "%d", GIT_REPO_VERSION);
212 git_config_set("core.repositoryformatversion", repo_version_string);
215 strcpy(path + len, "config");
217 /* Check filemode trustability */
218 if (!lstat(path, &st1)) {
220 int filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
221 !lstat(path, &st2) &&
222 st1.st_mode != st2.st_mode);
223 git_config_set("core.filemode",
224 filemode ? "true" : "false");
228 static const char init_db_usage[] =
229 "git-init-db [--template=<template-directory>] [--shared]";
232 * If you want to, you can share the DB area with any number of branches.
233 * That has advantages: you can save space by sharing all the SHA1 objects.
234 * On the other hand, it might just make lookup slower and messier. You
235 * be the judge. The default case is to have one DB per managed directory.
237 int main(int argc, char **argv)
240 const char *sha1_dir;
241 char *path, *template_dir = NULL;
244 for (i = 1; i < argc; i++, argv++) {
246 if (!strncmp(arg, "--template=", 11))
247 template_dir = arg+11;
248 else if (!strcmp(arg, "--shared"))
249 shared_repository = 1;
255 * Set up the default .git directory contents
257 git_dir = getenv(GIT_DIR_ENVIRONMENT);
259 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
260 fprintf(stderr, "defaulting to local storage area\n");
262 safe_create_dir(git_dir, 0);
264 /* Check to see if the repository version is right.
265 * Note that a newly created repository does not have
266 * config file, so this will not fail. What we are catching
267 * is an attempt to reinitialize new repository with an old tool.
269 check_repository_format();
271 create_default_files(git_dir, template_dir);
274 * And set up the object store.
276 sha1_dir = get_object_directory();
277 len = strlen(sha1_dir);
278 path = xmalloc(len + 40);
279 memcpy(path, sha1_dir, len);
281 safe_create_dir(sha1_dir, 1);
282 strcpy(path+len, "/pack");
283 safe_create_dir(path, 1);
284 strcpy(path+len, "/info");
285 safe_create_dir(path, 1);
287 if (shared_repository)
288 git_config_set("core.sharedRepository", "true");