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)
14 if (mkdir(dir, 0777) < 0) {
15 if (errno != EEXIST) {
22 static int copy_file(const char *dst, const char *src, int mode)
26 mode = (mode & 0111) ? 0777 : 0666;
27 if ((fdi = open(src, O_RDONLY)) < 0)
29 if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
33 status = copy_fd(fdi, fdo);
38 static void copy_templates_1(char *path, int baselen,
39 char *template, int template_baselen,
44 /* Note: if ".git/hooks" file exists in the repository being
45 * re-initialized, /etc/core-git/templates/hooks/update would
46 * cause git-init-db to fail here. I think this is sane but
47 * it means that the set of templates we ship by default, along
48 * with the way the namespace under .git/ is organized, should
49 * be really carefully chosen.
51 safe_create_dir(path);
52 while ((de = readdir(dir)) != NULL) {
53 struct stat st_git, st_template;
57 if (de->d_name[0] == '.')
59 namelen = strlen(de->d_name);
60 if ((PATH_MAX <= baselen + namelen) ||
61 (PATH_MAX <= template_baselen + namelen))
62 die("insanely long template name %s", de->d_name);
63 memcpy(path + baselen, de->d_name, namelen+1);
64 memcpy(template + template_baselen, de->d_name, namelen+1);
65 if (lstat(path, &st_git)) {
67 die("cannot stat %s", path);
72 if (lstat(template, &st_template))
73 die("cannot stat template %s", template);
75 if (S_ISDIR(st_template.st_mode)) {
76 DIR *subdir = opendir(template);
77 int baselen_sub = baselen + namelen;
78 int template_baselen_sub = template_baselen + namelen;
80 die("cannot opendir %s", template);
82 template[template_baselen_sub++] = '/';
84 template[template_baselen_sub] = 0;
85 copy_templates_1(path, baselen_sub,
86 template, template_baselen_sub,
92 else if (S_ISLNK(st_template.st_mode)) {
95 len = readlink(template, lnk, sizeof(lnk));
97 die("cannot readlink %s", template);
98 if (sizeof(lnk) <= len)
99 die("insanely long symlink %s", template);
101 if (symlink(lnk, path))
102 die("cannot symlink %s %s", lnk, path);
104 else if (S_ISREG(st_template.st_mode)) {
105 if (copy_file(path, template, st_template.st_mode))
106 die("cannot copy %s to %s", template, path);
109 error("ignoring template %s", template);
113 static void copy_templates(const char *git_dir, int len, char *template_dir)
116 char template_path[PATH_MAX];
121 template_dir = DEFAULT_GIT_TEMPLATE_DIR;
122 strcpy(template_path, template_dir);
123 template_len = strlen(template_path);
124 if (template_path[template_len-1] != '/') {
125 template_path[template_len++] = '/';
126 template_path[template_len] = 0;
128 dir = opendir(template_path);
130 fprintf(stderr, "warning: templates not found %s\n",
135 /* Make sure that template is from the correct vintage */
136 strcpy(template_path + template_len, "config");
137 repository_format_version = 0;
138 git_config_from_file(check_repository_format_version,
140 template_path[template_len] = 0;
142 if (repository_format_version &&
143 repository_format_version != GIT_REPO_VERSION) {
144 fprintf(stderr, "warning: not copying templates of "
145 "a wrong format version %d from '%s'\n",
146 repository_format_version,
152 memcpy(path, git_dir, len);
154 copy_templates_1(path, len,
155 template_path, template_len,
160 static void create_default_files(const char *git_dir, char *template_path)
162 unsigned len = strlen(git_dir);
163 static char path[PATH_MAX];
164 unsigned char sha1[20];
166 char repo_version_string[10];
168 if (len > sizeof(path)-50)
169 die("insane git directory %s", git_dir);
170 memcpy(path, git_dir, len);
172 if (len && path[len-1] != '/')
176 * Create .git/refs/{heads,tags}
178 strcpy(path + len, "refs");
179 safe_create_dir(path);
180 strcpy(path + len, "refs/heads");
181 safe_create_dir(path);
182 strcpy(path + len, "refs/tags");
183 safe_create_dir(path);
185 /* First copy the templates -- we might have the default
186 * config file there, in which case we would want to read
187 * from it after installing.
190 copy_templates(path, len, template_path);
192 git_config(git_default_config);
195 * Create the default symlink from ".git/HEAD" to the "master"
196 * branch, if it does not exist yet.
198 strcpy(path + len, "HEAD");
199 if (read_ref(path, sha1) < 0) {
200 if (create_symref(path, "refs/heads/master") < 0)
204 /* This forces creation of new config file */
205 sprintf(repo_version_string, "%d", GIT_REPO_VERSION);
206 git_config_set("core.repositoryformatversion", repo_version_string);
209 strcpy(path + len, "config");
211 /* Check filemode trustability */
212 if (!lstat(path, &st1)) {
214 int filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
215 !lstat(path, &st2) &&
216 st1.st_mode != st2.st_mode);
217 git_config_set("core.filemode",
218 filemode ? "true" : "false");
222 static const char init_db_usage[] =
223 "git-init-db [--template=<template-directory>]";
226 * If you want to, you can share the DB area with any number of branches.
227 * That has advantages: you can save space by sharing all the SHA1 objects.
228 * On the other hand, it might just make lookup slower and messier. You
229 * be the judge. The default case is to have one DB per managed directory.
231 int main(int argc, char **argv)
234 const char *sha1_dir;
235 char *path, *template_dir = NULL;
238 for (i = 1; i < argc; i++, argv++) {
240 if (!strncmp(arg, "--template=", 11))
241 template_dir = arg+11;
247 * Set up the default .git directory contents
249 git_dir = getenv(GIT_DIR_ENVIRONMENT);
251 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
252 fprintf(stderr, "defaulting to local storage area\n");
254 safe_create_dir(git_dir);
256 /* Check to see if the repository version is right.
257 * Note that a newly created repository does not have
258 * config file, so this will not fail. What we are catching
259 * is an attempt to reinitialize new repository with an old tool.
261 check_repository_format();
263 create_default_files(git_dir, template_dir);
266 * And set up the object store.
268 sha1_dir = get_object_directory();
269 len = strlen(sha1_dir);
270 path = xmalloc(len + 40);
271 memcpy(path, sha1_dir, len);
273 safe_create_dir(sha1_dir);
274 strcpy(path+len, "/pack");
275 safe_create_dir(path);
276 strcpy(path+len, "/info");
277 safe_create_dir(path);