254 lines
7.3 KiB
C
254 lines
7.3 KiB
C
/*
|
|
* GIT - The information manager from hell
|
|
*
|
|
* Copyright (C) Linus Torvalds, 2005
|
|
*/
|
|
#include "builtin.h"
|
|
#include "abspath.h"
|
|
#include "environment.h"
|
|
#include "gettext.h"
|
|
#include "object-file.h"
|
|
#include "parse-options.h"
|
|
#include "path.h"
|
|
#include "refs.h"
|
|
#include "repository.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)
|
|
{
|
|
const char *git_dir;
|
|
const char *real_git_dir = NULL;
|
|
const char *work_tree;
|
|
const char *template_dir = 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),
|
|
{ OPTION_CALLBACK, 0, "shared", &init_shared_repository,
|
|
N_("permissions"),
|
|
N_("specify that the git repository is to be shared amongst several users"),
|
|
PARSE_OPT_OPTARG | PARSE_OPT_NONEG, shared_callback, 0},
|
|
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()
|
|
};
|
|
|
|
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_pathdup(real_git_dir, 1);
|
|
|
|
if (template_dir && *template_dir && !is_absolute_path(template_dir)) {
|
|
template_dir = absolute_pathdup(template_dir);
|
|
UNLEAK(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 = get_shared_repository();
|
|
set_shared_repository(0);
|
|
switch (safe_create_leading_directories_const(argv[0])) {
|
|
case SCLD_OK:
|
|
case SCLD_PERMS:
|
|
break;
|
|
case SCLD_EXISTS:
|
|
errno = EEXIST;
|
|
/* fallthru */
|
|
default:
|
|
die_errno(_("cannot mkdir %s"), argv[0]);
|
|
break;
|
|
}
|
|
set_shared_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)
|
|
set_shared_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 = 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);
|
|
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(get_git_work_tree(), X_OK))
|
|
die_errno (_("Cannot access work tree '%s'"),
|
|
get_git_work_tree());
|
|
}
|
|
else {
|
|
if (real_git_dir)
|
|
die(_("--separate-git-dir incompatible with bare repository"));
|
|
if (work_tree)
|
|
set_git_work_tree(work_tree);
|
|
}
|
|
|
|
UNLEAK(real_git_dir);
|
|
UNLEAK(git_dir);
|
|
UNLEAK(work_tree);
|
|
|
|
flags |= INIT_DB_EXIST_OK;
|
|
return init_db(git_dir, real_git_dir, template_dir, hash_algo,
|
|
ref_storage_format, initial_branch,
|
|
init_shared_repository, flags);
|
|
}
|