2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
10 #ifndef DEFAULT_GIT_TEMPLATE_DIR
11 #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates"
14 #ifdef NO_TRUSTABLE_FILEMODE
15 #define TEST_FILEMODE 0
17 #define TEST_FILEMODE 1
20 static void safe_create_dir(const char *dir
, int share
)
22 if (mkdir(dir
, 0777) < 0) {
23 if (errno
!= EEXIST
) {
28 else if (share
&& adjust_shared_perm(dir
))
29 die("Could not make %s writable by group\n", dir
);
32 static void copy_templates_1(char *path
, int baselen
,
33 char *template, int template_baselen
,
38 /* Note: if ".git/hooks" file exists in the repository being
39 * re-initialized, /etc/core-git/templates/hooks/update would
40 * cause git-init to fail here. I think this is sane but
41 * it means that the set of templates we ship by default, along
42 * with the way the namespace under .git/ is organized, should
43 * be really carefully chosen.
45 safe_create_dir(path
, 1);
46 while ((de
= readdir(dir
)) != NULL
) {
47 struct stat st_git
, st_template
;
51 if (de
->d_name
[0] == '.')
53 namelen
= strlen(de
->d_name
);
54 if ((PATH_MAX
<= baselen
+ namelen
) ||
55 (PATH_MAX
<= template_baselen
+ namelen
))
56 die("insanely long template name %s", de
->d_name
);
57 memcpy(path
+ baselen
, de
->d_name
, namelen
+1);
58 memcpy(template + template_baselen
, de
->d_name
, namelen
+1);
59 if (lstat(path
, &st_git
)) {
61 die("cannot stat %s", path
);
66 if (lstat(template, &st_template
))
67 die("cannot stat template %s", template);
69 if (S_ISDIR(st_template
.st_mode
)) {
70 DIR *subdir
= opendir(template);
71 int baselen_sub
= baselen
+ namelen
;
72 int template_baselen_sub
= template_baselen
+ namelen
;
74 die("cannot opendir %s", template);
76 template[template_baselen_sub
++] = '/';
78 template[template_baselen_sub
] = 0;
79 copy_templates_1(path
, baselen_sub
,
80 template, template_baselen_sub
,
86 else if (S_ISLNK(st_template
.st_mode
)) {
89 len
= readlink(template, lnk
, sizeof(lnk
));
91 die("cannot readlink %s", template);
92 if (sizeof(lnk
) <= len
)
93 die("insanely long symlink %s", template);
95 if (symlink(lnk
, path
))
96 die("cannot symlink %s %s", lnk
, path
);
98 else if (S_ISREG(st_template
.st_mode
)) {
99 if (copy_file(path
, template, st_template
.st_mode
))
100 die("cannot copy %s to %s", template, path
);
103 error("ignoring template %s", template);
107 static void copy_templates(const char *git_dir
, int len
, const char *template_dir
)
110 char template_path
[PATH_MAX
];
115 template_dir
= getenv(TEMPLATE_DIR_ENVIRONMENT
);
118 * if the hard-coded template is relative, it is
119 * interpreted relative to the exec_dir
121 template_dir
= DEFAULT_GIT_TEMPLATE_DIR
;
122 if (!is_absolute_path(template_dir
)) {
123 struct strbuf d
= STRBUF_INIT
;
124 strbuf_addf(&d
, "%s/%s", git_exec_path(), template_dir
);
125 template_dir
= strbuf_detach(&d
, NULL
);
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 int create_default_files(const char *git_dir
, const char *template_path
)
168 unsigned len
= strlen(git_dir
);
169 static char path
[PATH_MAX
];
171 char repo_version_string
[10];
176 if (len
> sizeof(path
)-50)
177 die("insane git directory %s", git_dir
);
178 memcpy(path
, git_dir
, len
);
180 if (len
&& path
[len
-1] != '/')
184 * Create .git/refs/{heads,tags}
186 strcpy(path
+ len
, "refs");
187 safe_create_dir(path
, 1);
188 strcpy(path
+ len
, "refs/heads");
189 safe_create_dir(path
, 1);
190 strcpy(path
+ len
, "refs/tags");
191 safe_create_dir(path
, 1);
193 /* First copy the templates -- we might have the default
194 * config file there, in which case we would want to read
195 * from it after installing.
198 copy_templates(path
, len
, template_path
);
200 git_config(git_default_config
);
203 * We would have created the above under user's umask -- under
204 * shared-repository settings, we would need to fix them up.
206 if (shared_repository
) {
208 adjust_shared_perm(path
);
209 strcpy(path
+ len
, "refs");
210 adjust_shared_perm(path
);
211 strcpy(path
+ len
, "refs/heads");
212 adjust_shared_perm(path
);
213 strcpy(path
+ len
, "refs/tags");
214 adjust_shared_perm(path
);
218 * Create the default symlink from ".git/HEAD" to the "master"
219 * branch, if it does not exist yet.
221 strcpy(path
+ len
, "HEAD");
222 reinit
= (!access(path
, R_OK
)
223 || readlink(path
, junk
, sizeof(junk
)-1) != -1);
225 if (create_symref("HEAD", "refs/heads/master", NULL
) < 0)
229 /* This forces creation of new config file */
230 sprintf(repo_version_string
, "%d", GIT_REPO_VERSION
);
231 git_config_set("core.repositoryformatversion", repo_version_string
);
234 strcpy(path
+ len
, "config");
236 /* Check filemode trustability */
237 filemode
= TEST_FILEMODE
;
238 if (TEST_FILEMODE
&& !lstat(path
, &st1
)) {
240 filemode
= (!chmod(path
, st1
.st_mode
^ S_IXUSR
) &&
241 !lstat(path
, &st2
) &&
242 st1
.st_mode
!= st2
.st_mode
);
244 git_config_set("core.filemode", filemode
? "true" : "false");
246 if (is_bare_repository())
247 git_config_set("core.bare", "true");
249 const char *work_tree
= get_git_work_tree();
250 git_config_set("core.bare", "false");
251 /* allow template config file to override the default */
252 if (log_all_ref_updates
== -1)
253 git_config_set("core.logallrefupdates", "true");
254 if (work_tree
!= git_work_tree_cfg
)
255 git_config_set("core.worktree", work_tree
);
258 /* Check if symlink is supported in the work tree */
261 strcpy(path
+ len
, "tXXXXXX");
262 if (!close(xmkstemp(path
)) &&
264 !symlink("testing", path
) &&
265 !lstat(path
, &st1
) &&
266 S_ISLNK(st1
.st_mode
))
267 unlink(path
); /* good */
269 git_config_set("core.symlinks", "false");
275 static void guess_repository_type(const char *git_dir
)
280 if (0 <= is_bare_repository_cfg
)
286 * "GIT_DIR=. git init" is always bare.
287 * "GIT_DIR=`pwd` git init" too.
289 if (!strcmp(".", git_dir
))
291 if (!getcwd(cwd
, sizeof(cwd
)))
292 die("cannot tell cwd");
293 if (!strcmp(git_dir
, cwd
))
296 * "GIT_DIR=.git or GIT_DIR=something/.git is usually not.
298 if (!strcmp(git_dir
, ".git"))
300 slash
= strrchr(git_dir
, '/');
301 if (slash
&& !strcmp(slash
, "/.git"))
305 * Otherwise it is often bare. At this point
306 * we are just guessing.
309 is_bare_repository_cfg
= 1;
313 static const char init_db_usage
[] =
314 "git-init [-q | --quiet] [--template=<template-directory>] [--shared]";
317 * If you want to, you can share the DB area with any number of branches.
318 * That has advantages: you can save space by sharing all the SHA1 objects.
319 * On the other hand, it might just make lookup slower and messier. You
320 * be the judge. The default case is to have one DB per managed directory.
322 int cmd_init_db(int argc
, const char **argv
, const char *prefix
)
325 const char *sha1_dir
;
326 const char *template_dir
= NULL
;
331 for (i
= 1; i
< argc
; i
++, argv
++) {
332 const char *arg
= argv
[1];
333 if (!prefixcmp(arg
, "--template="))
334 template_dir
= arg
+11;
335 else if (!strcmp(arg
, "--shared"))
336 shared_repository
= PERM_GROUP
;
337 else if (!prefixcmp(arg
, "--shared="))
338 shared_repository
= git_config_perm("arg", arg
+9);
339 else if (!strcmp(arg
, "-q") || !strcmp(arg
, "--quiet"))
342 usage(init_db_usage
);
346 * GIT_WORK_TREE makes sense only in conjunction with GIT_DIR
347 * without --bare. Catch the error early.
349 git_dir
= getenv(GIT_DIR_ENVIRONMENT
);
350 if ((!git_dir
|| is_bare_repository_cfg
== 1)
351 && getenv(GIT_WORK_TREE_ENVIRONMENT
))
352 die("%s (or --work-tree=<directory>) not allowed without "
353 "specifying %s (or --git-dir=<directory>)",
354 GIT_WORK_TREE_ENVIRONMENT
,
355 GIT_DIR_ENVIRONMENT
);
357 guess_repository_type(git_dir
);
359 if (is_bare_repository_cfg
<= 0) {
360 git_work_tree_cfg
= xcalloc(PATH_MAX
, 1);
361 if (!getcwd(git_work_tree_cfg
, PATH_MAX
))
362 die ("Cannot access current working directory.");
363 if (access(get_git_work_tree(), X_OK
))
364 die ("Cannot access work tree '%s'",
365 get_git_work_tree());
369 * Set up the default .git directory contents
371 git_dir
= getenv(GIT_DIR_ENVIRONMENT
);
373 git_dir
= DEFAULT_GIT_DIR_ENVIRONMENT
;
374 safe_create_dir(git_dir
, 0);
376 /* Check to see if the repository version is right.
377 * Note that a newly created repository does not have
378 * config file, so this will not fail. What we are catching
379 * is an attempt to reinitialize new repository with an old tool.
381 check_repository_format();
383 reinit
= create_default_files(git_dir
, template_dir
);
386 * And set up the object store.
388 sha1_dir
= get_object_directory();
389 len
= strlen(sha1_dir
);
390 path
= xmalloc(len
+ 40);
391 memcpy(path
, sha1_dir
, len
);
393 safe_create_dir(sha1_dir
, 1);
394 strcpy(path
+len
, "/pack");
395 safe_create_dir(path
, 1);
396 strcpy(path
+len
, "/info");
397 safe_create_dir(path
, 1);
399 if (shared_repository
) {
401 /* We do not spell "group" and such, so that
402 * the configuration can be read by older version
405 sprintf(buf
, "%d", shared_repository
);
406 git_config_set("core.sharedrepository", buf
);
407 git_config_set("receive.denyNonFastforwards", "true");
411 printf("%s%s Git repository in %s/\n",
412 reinit
? "Reinitialized existing" : "Initialized empty",
413 shared_repository
? " shared" : "",