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/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#define USE_THE_REPOSITORY_VARIABLE
#include "builtin.h"
#include "abspath.h"
#include "environment.h"
#include "gettext.h"
#include "parse-options.h"
#include "path.h"
#include "refs.h"
#include "setup.h"
#include "strbuf.h"
static int guess_repository_type(const char *git_dir)
{
const char *slash;
char *cwd;
int cwd_is_git_dir;
/*
* "GIT_DIR=. git init" is always bare.
* "GIT_DIR=`pwd` git init" too.
*/
if (!strcmp(".", git_dir))
return 1;
cwd = xgetcwd();
cwd_is_git_dir = !strcmp(git_dir, cwd);
free(cwd);
if (cwd_is_git_dir)
return 1;
/*
* "GIT_DIR=.git or GIT_DIR=something/.git is usually not.
*/
if (!strcmp(git_dir, ".git"))
return 0;
slash = strrchr(git_dir, '/');
if (slash && !strcmp(slash, "/.git"))
return 0;
/*
* Otherwise it is often bare. At this point
* we are just guessing.
*/
return 1;
}
static int shared_callback(const struct option *opt, const char *arg, int unset)
{
BUG_ON_OPT_NEG(unset);
*((int *) opt->value) = (arg) ? git_config_perm("arg", arg) : PERM_GROUP;
return 0;
}
static const char *const init_db_usage[] = {
N_("git init [-q | --quiet] [--bare] [--template=<template-directory>]\n"
" [--separate-git-dir <git-dir>] [--object-format=<format>]\n"
" [--ref-format=<format>]\n"
" [-b <branch-name> | --initial-branch=<branch-name>]\n"
" [--shared[=<permissions>]] [<directory>]"),
NULL
};
/*
* If you want to, you can share the DB area with any number of branches.
* That has advantages: you can save space by sharing all the SHA1 objects.
* On the other hand, it might just make lookup slower and messier. You
* be the judge. The default case is to have one DB per managed directory.
*/
int cmd_init_db(int argc,
const char **argv,
const char *prefix,
struct repository *repo UNUSED)
{
char *git_dir;
const char *real_git_dir = NULL;
char *real_git_dir_to_free = NULL;
char *work_tree = NULL;
const char *template_dir = NULL;
char *template_dir_to_free = NULL;
unsigned int flags = 0;
const char *object_format = NULL;
const char *ref_format = NULL;
const char *initial_branch = NULL;
int hash_algo = GIT_HASH_UNKNOWN;
enum ref_storage_format ref_storage_format = REF_STORAGE_FORMAT_UNKNOWN;
int init_shared_repository = -1;
const struct option init_db_options[] = {
OPT_STRING(0, "template", &template_dir, N_("template-directory"),
N_("directory from which templates will be used")),
OPT_SET_INT(0, "bare", &is_bare_repository_cfg,
N_("create a bare repository"), 1),
{
.type = OPTION_CALLBACK,
.long_name = "shared",
.value = &init_shared_repository,
.argh = N_("permissions"),
.help = N_("specify that the git repository is to be shared amongst several users"),
.flags = PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
.callback = shared_callback
},
OPT_BIT('q', "quiet", &flags, N_("be quiet"), INIT_DB_QUIET),
OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
N_("separate git dir from working tree")),
OPT_STRING('b', "initial-branch", &initial_branch, N_("name"),
N_("override the name of the initial branch")),
OPT_STRING(0, "object-format", &object_format, N_("hash"),
N_("specify the hash algorithm to use")),
OPT_STRING(0, "ref-format", &ref_format, N_("format"),
N_("specify the reference format to use")),
OPT_END()
};
int ret;
argc = parse_options(argc, argv, prefix, init_db_options, init_db_usage, 0);
if (real_git_dir && is_bare_repository_cfg == 1)
die(_("options '%s' and '%s' cannot be used together"), "--separate-git-dir", "--bare");
if (real_git_dir && !is_absolute_path(real_git_dir))
real_git_dir = real_git_dir_to_free = real_pathdup(real_git_dir, 1);
if (template_dir && *template_dir && !is_absolute_path(template_dir))
template_dir = template_dir_to_free = absolute_pathdup(template_dir);
if (argc == 1) {
int mkdir_tried = 0;
retry:
if (chdir(argv[0]) < 0) {
if (!mkdir_tried) {
int saved;
/*
* At this point we haven't read any configuration,
* and we know shared_repository should always be 0;
* but just in case we play safe.
*/
saved = repo_settings_get_shared_repository(the_repository);
repo_settings_set_shared_repository(the_repository, 0);
switch (safe_create_leading_directories_const(the_repository, argv[0])) {
case SCLD_OK:
case SCLD_PERMS:
break;
case SCLD_EXISTS:
errno = EEXIST;
/* fallthru */
default:
die_errno(_("cannot mkdir %s"), argv[0]);
break;
}
repo_settings_set_shared_repository(the_repository, saved);
if (mkdir(argv[0], 0777) < 0)
die_errno(_("cannot mkdir %s"), argv[0]);
mkdir_tried = 1;
goto retry;
}
die_errno(_("cannot chdir to %s"), argv[0]);
}
} else if (0 < argc) {
usage(init_db_usage[0]);
}
if (is_bare_repository_cfg == 1) {
char *cwd = xgetcwd();
setenv(GIT_DIR_ENVIRONMENT, cwd, argc > 0);
free(cwd);
}
if (object_format) {
hash_algo = hash_algo_by_name(object_format);
if (hash_algo == GIT_HASH_UNKNOWN)
die(_("unknown hash algorithm '%s'"), object_format);
}
if (ref_format) {
ref_storage_format = ref_storage_format_by_name(ref_format);
if (ref_storage_format == REF_STORAGE_FORMAT_UNKNOWN)
die(_("unknown ref storage format '%s'"), ref_format);
}
if (init_shared_repository != -1)
repo_settings_set_shared_repository(the_repository, init_shared_repository);
/*
* GIT_WORK_TREE makes sense only in conjunction with GIT_DIR
* without --bare. Catch the error early.
*/
git_dir = xstrdup_or_null(getenv(GIT_DIR_ENVIRONMENT));
work_tree = xstrdup_or_null(getenv(GIT_WORK_TREE_ENVIRONMENT));
if ((!git_dir || is_bare_repository_cfg == 1) && work_tree)
die(_("%s (or --work-tree=<directory>) not allowed without "
"specifying %s (or --git-dir=<directory>)"),
GIT_WORK_TREE_ENVIRONMENT,
GIT_DIR_ENVIRONMENT);
/*
* Set up the default .git directory contents
*/
if (!git_dir)
git_dir = xstrdup(DEFAULT_GIT_DIR_ENVIRONMENT);
/*
* When --separate-git-dir is used inside a linked worktree, take
* care to ensure that the common .git/ directory is relocated, not
* the worktree-specific .git/worktrees/<id>/ directory.
*/
if (real_git_dir) {
int err;
const char *p;
struct strbuf sb = STRBUF_INIT;
p = read_gitfile_gently(git_dir, &err);
if (p && get_common_dir(&sb, p)) {
struct strbuf mainwt = STRBUF_INIT;
strbuf_addbuf(&mainwt, &sb);
strbuf_strip_suffix(&mainwt, "/.git");
if (chdir(mainwt.buf) < 0)
die_errno(_("cannot chdir to %s"), mainwt.buf);
strbuf_release(&mainwt);
free(git_dir);
git_dir = strbuf_detach(&sb, NULL);
}
strbuf_release(&sb);
}
if (is_bare_repository_cfg < 0)
is_bare_repository_cfg = guess_repository_type(git_dir);
if (!is_bare_repository_cfg) {
const char *git_dir_parent = strrchr(git_dir, '/');
if (git_dir_parent) {
char *rel = xstrndup(git_dir, git_dir_parent - git_dir);
git_work_tree_cfg = real_pathdup(rel, 1);
free(rel);
}
if (!git_work_tree_cfg)
git_work_tree_cfg = xgetcwd();
if (work_tree)
set_git_work_tree(work_tree);
else
set_git_work_tree(git_work_tree_cfg);
if (access(repo_get_work_tree(the_repository), X_OK))
die_errno (_("Cannot access work tree '%s'"),
repo_get_work_tree(the_repository));
}
else {
if (real_git_dir)
die(_("--separate-git-dir incompatible with bare repository"));
if (work_tree)
set_git_work_tree(work_tree);
}
flags |= INIT_DB_EXIST_OK;
ret = init_db(git_dir, real_git_dir, template_dir, hash_algo,
ref_storage_format, initial_branch,
init_shared_repository, flags);
free(template_dir_to_free);
free(real_git_dir_to_free);
free(work_tree);
free(git_dir);
return ret;
}
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