mirror of
https://github.com/git/git
synced 2024-08-27 19:49:21 +00:00
![Ævar Arnfjörð Bjarmason](/assets/img/avatar_default.png)
On Solaris systems we'd warn about an implicit cast of mode_t when we printed things out with the %d format. We'd get this warning under GCC 4.6.0 with Solaris headers: builtin/init-db.c: In function ‘separate_git_dir’: builtin/init-db.c:354:4: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘mode_t’ [-Wformat] We've been doing this ever since v1.7.4.1-296-gb57fb80. Just work around this by adding an explicit cast. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
597 lines
16 KiB
C
597 lines
16 KiB
C
/*
|
|
* GIT - The information manager from hell
|
|
*
|
|
* Copyright (C) Linus Torvalds, 2005
|
|
*/
|
|
#include "cache.h"
|
|
#include "builtin.h"
|
|
#include "exec_cmd.h"
|
|
#include "parse-options.h"
|
|
|
|
#ifndef DEFAULT_GIT_TEMPLATE_DIR
|
|
#define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates"
|
|
#endif
|
|
|
|
#ifdef NO_TRUSTABLE_FILEMODE
|
|
#define TEST_FILEMODE 0
|
|
#else
|
|
#define TEST_FILEMODE 1
|
|
#endif
|
|
|
|
static int init_is_bare_repository = 0;
|
|
static int init_shared_repository = -1;
|
|
static const char *init_db_template_dir;
|
|
static const char *git_link;
|
|
|
|
static void safe_create_dir(const char *dir, int share)
|
|
{
|
|
if (mkdir(dir, 0777) < 0) {
|
|
if (errno != EEXIST) {
|
|
perror(dir);
|
|
exit(1);
|
|
}
|
|
}
|
|
else if (share && adjust_shared_perm(dir))
|
|
die(_("Could not make %s writable by group"), dir);
|
|
}
|
|
|
|
static void copy_templates_1(char *path, int baselen,
|
|
char *template, int template_baselen,
|
|
DIR *dir)
|
|
{
|
|
struct dirent *de;
|
|
|
|
/* Note: if ".git/hooks" file exists in the repository being
|
|
* re-initialized, /etc/core-git/templates/hooks/update would
|
|
* cause "git init" to fail here. I think this is sane but
|
|
* it means that the set of templates we ship by default, along
|
|
* with the way the namespace under .git/ is organized, should
|
|
* be really carefully chosen.
|
|
*/
|
|
safe_create_dir(path, 1);
|
|
while ((de = readdir(dir)) != NULL) {
|
|
struct stat st_git, st_template;
|
|
int namelen;
|
|
int exists = 0;
|
|
|
|
if (de->d_name[0] == '.')
|
|
continue;
|
|
namelen = strlen(de->d_name);
|
|
if ((PATH_MAX <= baselen + namelen) ||
|
|
(PATH_MAX <= template_baselen + namelen))
|
|
die(_("insanely long template name %s"), de->d_name);
|
|
memcpy(path + baselen, de->d_name, namelen+1);
|
|
memcpy(template + template_baselen, de->d_name, namelen+1);
|
|
if (lstat(path, &st_git)) {
|
|
if (errno != ENOENT)
|
|
die_errno(_("cannot stat '%s'"), path);
|
|
}
|
|
else
|
|
exists = 1;
|
|
|
|
if (lstat(template, &st_template))
|
|
die_errno(_("cannot stat template '%s'"), template);
|
|
|
|
if (S_ISDIR(st_template.st_mode)) {
|
|
DIR *subdir = opendir(template);
|
|
int baselen_sub = baselen + namelen;
|
|
int template_baselen_sub = template_baselen + namelen;
|
|
if (!subdir)
|
|
die_errno(_("cannot opendir '%s'"), template);
|
|
path[baselen_sub++] =
|
|
template[template_baselen_sub++] = '/';
|
|
path[baselen_sub] =
|
|
template[template_baselen_sub] = 0;
|
|
copy_templates_1(path, baselen_sub,
|
|
template, template_baselen_sub,
|
|
subdir);
|
|
closedir(subdir);
|
|
}
|
|
else if (exists)
|
|
continue;
|
|
else if (S_ISLNK(st_template.st_mode)) {
|
|
char lnk[256];
|
|
int len;
|
|
len = readlink(template, lnk, sizeof(lnk));
|
|
if (len < 0)
|
|
die_errno(_("cannot readlink '%s'"), template);
|
|
if (sizeof(lnk) <= len)
|
|
die(_("insanely long symlink %s"), template);
|
|
lnk[len] = 0;
|
|
if (symlink(lnk, path))
|
|
die_errno(_("cannot symlink '%s' '%s'"), lnk, path);
|
|
}
|
|
else if (S_ISREG(st_template.st_mode)) {
|
|
if (copy_file(path, template, st_template.st_mode))
|
|
die_errno(_("cannot copy '%s' to '%s'"), template,
|
|
path);
|
|
}
|
|
else
|
|
error(_("ignoring template %s"), template);
|
|
}
|
|
}
|
|
|
|
static void copy_templates(const char *template_dir)
|
|
{
|
|
char path[PATH_MAX];
|
|
char template_path[PATH_MAX];
|
|
int template_len;
|
|
DIR *dir;
|
|
const char *git_dir = get_git_dir();
|
|
int len = strlen(git_dir);
|
|
|
|
if (!template_dir)
|
|
template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
|
|
if (!template_dir)
|
|
template_dir = init_db_template_dir;
|
|
if (!template_dir)
|
|
template_dir = system_path(DEFAULT_GIT_TEMPLATE_DIR);
|
|
if (!template_dir[0])
|
|
return;
|
|
template_len = strlen(template_dir);
|
|
if (PATH_MAX <= (template_len+strlen("/config")))
|
|
die(_("insanely long template path %s"), template_dir);
|
|
strcpy(template_path, template_dir);
|
|
if (template_path[template_len-1] != '/') {
|
|
template_path[template_len++] = '/';
|
|
template_path[template_len] = 0;
|
|
}
|
|
dir = opendir(template_path);
|
|
if (!dir) {
|
|
warning(_("templates not found %s"), template_dir);
|
|
return;
|
|
}
|
|
|
|
/* Make sure that template is from the correct vintage */
|
|
strcpy(template_path + template_len, "config");
|
|
repository_format_version = 0;
|
|
git_config_from_file(check_repository_format_version,
|
|
template_path, NULL);
|
|
template_path[template_len] = 0;
|
|
|
|
if (repository_format_version &&
|
|
repository_format_version != GIT_REPO_VERSION) {
|
|
warning(_("not copying templates of "
|
|
"a wrong format version %d from '%s'"),
|
|
repository_format_version,
|
|
template_dir);
|
|
closedir(dir);
|
|
return;
|
|
}
|
|
|
|
memcpy(path, git_dir, len);
|
|
if (len && path[len - 1] != '/')
|
|
path[len++] = '/';
|
|
path[len] = 0;
|
|
copy_templates_1(path, len,
|
|
template_path, template_len,
|
|
dir);
|
|
closedir(dir);
|
|
}
|
|
|
|
static int git_init_db_config(const char *k, const char *v, void *cb)
|
|
{
|
|
if (!strcmp(k, "init.templatedir"))
|
|
return git_config_pathname(&init_db_template_dir, k, v);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int create_default_files(const char *template_path)
|
|
{
|
|
const char *git_dir = get_git_dir();
|
|
unsigned len = strlen(git_dir);
|
|
static char path[PATH_MAX];
|
|
struct stat st1;
|
|
char repo_version_string[10];
|
|
char junk[2];
|
|
int reinit;
|
|
int filemode;
|
|
|
|
if (len > sizeof(path)-50)
|
|
die(_("insane git directory %s"), git_dir);
|
|
memcpy(path, git_dir, len);
|
|
|
|
if (len && path[len-1] != '/')
|
|
path[len++] = '/';
|
|
|
|
/*
|
|
* Create .git/refs/{heads,tags}
|
|
*/
|
|
safe_create_dir(git_path("refs"), 1);
|
|
safe_create_dir(git_path("refs/heads"), 1);
|
|
safe_create_dir(git_path("refs/tags"), 1);
|
|
|
|
/* Just look for `init.templatedir` */
|
|
git_config(git_init_db_config, NULL);
|
|
|
|
/* First copy the templates -- we might have the default
|
|
* config file there, in which case we would want to read
|
|
* from it after installing.
|
|
*/
|
|
copy_templates(template_path);
|
|
|
|
git_config(git_default_config, NULL);
|
|
is_bare_repository_cfg = init_is_bare_repository;
|
|
|
|
/* reading existing config may have overwrote it */
|
|
if (init_shared_repository != -1)
|
|
shared_repository = init_shared_repository;
|
|
|
|
/*
|
|
* We would have created the above under user's umask -- under
|
|
* shared-repository settings, we would need to fix them up.
|
|
*/
|
|
if (shared_repository) {
|
|
adjust_shared_perm(get_git_dir());
|
|
adjust_shared_perm(git_path("refs"));
|
|
adjust_shared_perm(git_path("refs/heads"));
|
|
adjust_shared_perm(git_path("refs/tags"));
|
|
}
|
|
|
|
/*
|
|
* Create the default symlink from ".git/HEAD" to the "master"
|
|
* branch, if it does not exist yet.
|
|
*/
|
|
strcpy(path + len, "HEAD");
|
|
reinit = (!access(path, R_OK)
|
|
|| readlink(path, junk, sizeof(junk)-1) != -1);
|
|
if (!reinit) {
|
|
if (create_symref("HEAD", "refs/heads/master", NULL) < 0)
|
|
exit(1);
|
|
}
|
|
|
|
/* This forces creation of new config file */
|
|
sprintf(repo_version_string, "%d", GIT_REPO_VERSION);
|
|
git_config_set("core.repositoryformatversion", repo_version_string);
|
|
|
|
path[len] = 0;
|
|
strcpy(path + len, "config");
|
|
|
|
/* Check filemode trustability */
|
|
filemode = TEST_FILEMODE;
|
|
if (TEST_FILEMODE && !lstat(path, &st1)) {
|
|
struct stat st2;
|
|
filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
|
|
!lstat(path, &st2) &&
|
|
st1.st_mode != st2.st_mode);
|
|
}
|
|
git_config_set("core.filemode", filemode ? "true" : "false");
|
|
|
|
if (is_bare_repository())
|
|
git_config_set("core.bare", "true");
|
|
else {
|
|
const char *work_tree = get_git_work_tree();
|
|
git_config_set("core.bare", "false");
|
|
/* allow template config file to override the default */
|
|
if (log_all_ref_updates == -1)
|
|
git_config_set("core.logallrefupdates", "true");
|
|
if (prefixcmp(git_dir, work_tree) ||
|
|
strcmp(git_dir + strlen(work_tree), "/.git")) {
|
|
git_config_set("core.worktree", work_tree);
|
|
}
|
|
}
|
|
|
|
if (!reinit) {
|
|
/* Check if symlink is supported in the work tree */
|
|
path[len] = 0;
|
|
strcpy(path + len, "tXXXXXX");
|
|
if (!close(xmkstemp(path)) &&
|
|
!unlink(path) &&
|
|
!symlink("testing", path) &&
|
|
!lstat(path, &st1) &&
|
|
S_ISLNK(st1.st_mode))
|
|
unlink(path); /* good */
|
|
else
|
|
git_config_set("core.symlinks", "false");
|
|
|
|
/* Check if the filesystem is case-insensitive */
|
|
path[len] = 0;
|
|
strcpy(path + len, "CoNfIg");
|
|
if (!access(path, F_OK))
|
|
git_config_set("core.ignorecase", "true");
|
|
}
|
|
|
|
return reinit;
|
|
}
|
|
|
|
static void create_object_directory(void)
|
|
{
|
|
const char *object_directory = get_object_directory();
|
|
int len = strlen(object_directory);
|
|
char *path = xmalloc(len + 40);
|
|
|
|
memcpy(path, object_directory, len);
|
|
|
|
safe_create_dir(object_directory, 1);
|
|
strcpy(path+len, "/pack");
|
|
safe_create_dir(path, 1);
|
|
strcpy(path+len, "/info");
|
|
safe_create_dir(path, 1);
|
|
|
|
free(path);
|
|
}
|
|
|
|
int set_git_dir_init(const char *git_dir, const char *real_git_dir,
|
|
int exist_ok)
|
|
{
|
|
if (real_git_dir) {
|
|
struct stat st;
|
|
|
|
if (!exist_ok && !stat(git_dir, &st))
|
|
die(_("%s already exists"), git_dir);
|
|
|
|
if (!exist_ok && !stat(real_git_dir, &st))
|
|
die(_("%s already exists"), real_git_dir);
|
|
|
|
/*
|
|
* make sure symlinks are resolved because we'll be
|
|
* moving the target repo later on in separate_git_dir()
|
|
*/
|
|
git_link = xstrdup(real_path(git_dir));
|
|
}
|
|
else {
|
|
real_git_dir = real_path(git_dir);
|
|
git_link = NULL;
|
|
}
|
|
set_git_dir(real_path(real_git_dir));
|
|
return 0;
|
|
}
|
|
|
|
static void separate_git_dir(const char *git_dir)
|
|
{
|
|
struct stat st;
|
|
FILE *fp;
|
|
|
|
if (!stat(git_link, &st)) {
|
|
const char *src;
|
|
|
|
if (S_ISREG(st.st_mode))
|
|
src = read_gitfile(git_link);
|
|
else if (S_ISDIR(st.st_mode))
|
|
src = git_link;
|
|
else
|
|
die(_("unable to handle file type %d"), (int)st.st_mode);
|
|
|
|
if (rename(src, git_dir))
|
|
die_errno(_("unable to move %s to %s"), src, git_dir);
|
|
}
|
|
|
|
fp = fopen(git_link, "w");
|
|
if (!fp)
|
|
die(_("Could not create git link %s"), git_link);
|
|
fprintf(fp, "gitdir: %s\n", git_dir);
|
|
fclose(fp);
|
|
}
|
|
|
|
int init_db(const char *template_dir, unsigned int flags)
|
|
{
|
|
int reinit;
|
|
const char *git_dir = get_git_dir();
|
|
|
|
if (git_link)
|
|
separate_git_dir(git_dir);
|
|
|
|
safe_create_dir(git_dir, 0);
|
|
|
|
init_is_bare_repository = is_bare_repository();
|
|
|
|
/* Check to see if the repository version is right.
|
|
* Note that a newly created repository does not have
|
|
* config file, so this will not fail. What we are catching
|
|
* is an attempt to reinitialize new repository with an old tool.
|
|
*/
|
|
check_repository_format();
|
|
|
|
reinit = create_default_files(template_dir);
|
|
|
|
create_object_directory();
|
|
|
|
if (shared_repository) {
|
|
char buf[10];
|
|
/* We do not spell "group" and such, so that
|
|
* the configuration can be read by older version
|
|
* of git. Note, we use octal numbers for new share modes,
|
|
* and compatibility values for PERM_GROUP and
|
|
* PERM_EVERYBODY.
|
|
*/
|
|
if (shared_repository < 0)
|
|
/* force to the mode value */
|
|
sprintf(buf, "0%o", -shared_repository);
|
|
else if (shared_repository == PERM_GROUP)
|
|
sprintf(buf, "%d", OLD_PERM_GROUP);
|
|
else if (shared_repository == PERM_EVERYBODY)
|
|
sprintf(buf, "%d", OLD_PERM_EVERYBODY);
|
|
else
|
|
die("oops");
|
|
git_config_set("core.sharedrepository", buf);
|
|
git_config_set("receive.denyNonFastforwards", "true");
|
|
}
|
|
|
|
if (!(flags & INIT_DB_QUIET)) {
|
|
int len = strlen(git_dir);
|
|
|
|
/*
|
|
* TRANSLATORS: The first '%s' is either "Reinitialized
|
|
* existing" or "Initialized empty", the second " shared" or
|
|
* "", and the last '%s%s' is the verbatim directory name.
|
|
*/
|
|
printf(_("%s%s Git repository in %s%s\n"),
|
|
reinit ? _("Reinitialized existing") : _("Initialized empty"),
|
|
shared_repository ? _(" shared") : "",
|
|
git_dir, len && git_dir[len-1] != '/' ? "/" : "");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int guess_repository_type(const char *git_dir)
|
|
{
|
|
char cwd[PATH_MAX];
|
|
const char *slash;
|
|
|
|
/*
|
|
* "GIT_DIR=. git init" is always bare.
|
|
* "GIT_DIR=`pwd` git init" too.
|
|
*/
|
|
if (!strcmp(".", git_dir))
|
|
return 1;
|
|
if (!getcwd(cwd, sizeof(cwd)))
|
|
die_errno(_("cannot tell cwd"));
|
|
if (!strcmp(git_dir, cwd))
|
|
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)
|
|
{
|
|
*((int *) opt->value) = (arg) ? git_config_perm("arg", arg) : PERM_GROUP;
|
|
return 0;
|
|
}
|
|
|
|
static const char *const init_db_usage[] = {
|
|
"git init [-q | --quiet] [--bare] [--template=<template-directory>] [--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 struct option init_db_options[] = {
|
|
OPT_STRING(0, "template", &template_dir, "template-directory",
|
|
"directory from which templates will be used"),
|
|
OPT_SET_INT(0, "bare", &is_bare_repository_cfg,
|
|
"create a bare repository", 1),
|
|
{ OPTION_CALLBACK, 0, "shared", &init_shared_repository,
|
|
"permissions",
|
|
"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, "be quiet", INIT_DB_QUIET),
|
|
OPT_STRING(0, "separate-git-dir", &real_git_dir, "gitdir",
|
|
"separate git dir from working tree"),
|
|
OPT_END()
|
|
};
|
|
|
|
argc = parse_options(argc, argv, prefix, init_db_options, init_db_usage, 0);
|
|
|
|
if (real_git_dir && !is_absolute_path(real_git_dir))
|
|
real_git_dir = xstrdup(real_path(real_git_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 = shared_repository;
|
|
shared_repository = 0;
|
|
switch (safe_create_leading_directories_const(argv[0])) {
|
|
case -3:
|
|
errno = EEXIST;
|
|
/* fallthru */
|
|
case -1:
|
|
die_errno(_("cannot mkdir %s"), argv[0]);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
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) {
|
|
static char git_dir[PATH_MAX+1];
|
|
|
|
setenv(GIT_DIR_ENVIRONMENT,
|
|
getcwd(git_dir, sizeof(git_dir)), argc > 0);
|
|
}
|
|
|
|
if (init_shared_repository != -1)
|
|
shared_repository = init_shared_repository;
|
|
|
|
/*
|
|
* GIT_WORK_TREE makes sense only in conjunction with GIT_DIR
|
|
* without --bare. Catch the error early.
|
|
*/
|
|
git_dir = getenv(GIT_DIR_ENVIRONMENT);
|
|
work_tree = 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;
|
|
|
|
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 = xstrdup(real_path(rel));
|
|
free(rel);
|
|
}
|
|
if (!git_work_tree_cfg) {
|
|
git_work_tree_cfg = xcalloc(PATH_MAX, 1);
|
|
if (!getcwd(git_work_tree_cfg, PATH_MAX))
|
|
die_errno (_("Cannot access current working directory"));
|
|
}
|
|
if (work_tree)
|
|
set_git_work_tree(real_path(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 (work_tree)
|
|
set_git_work_tree(real_path(work_tree));
|
|
}
|
|
|
|
set_git_dir_init(git_dir, real_git_dir, 1);
|
|
|
|
return init_db(template_dir, flags);
|
|
}
|