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-rw-r--r--builtin/init-db.c178
1 files changed, 143 insertions, 35 deletions
diff --git a/builtin/init-db.c b/builtin/init-db.c
index 41faffd28d..2167796ff2 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -9,6 +9,7 @@
#include "builtin.h"
#include "exec-cmd.h"
#include "parse-options.h"
+#include "worktree.h"
#ifndef DEFAULT_GIT_TEMPLATE_DIR
#define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates"
@@ -20,9 +21,10 @@
#define TEST_FILEMODE 1
#endif
+#define GIT_DEFAULT_HASH_ENVIRONMENT "GIT_DEFAULT_HASH"
+
static int init_is_bare_repository = 0;
static int init_shared_repository = -1;
-static const char *init_db_template_dir;
static void copy_templates_1(struct strbuf *path, struct strbuf *template_path,
DIR *dir)
@@ -91,12 +93,12 @@ static void copy_templates_1(struct strbuf *path, struct strbuf *template_path,
}
}
-static void copy_templates(const char *template_dir)
+static void copy_templates(const char *template_dir, const char *init_template_dir)
{
struct strbuf path = STRBUF_INIT;
struct strbuf template_path = STRBUF_INIT;
size_t template_len;
- struct repository_format template_format;
+ struct repository_format template_format = REPOSITORY_FORMAT_INIT;
struct strbuf err = STRBUF_INIT;
DIR *dir;
char *to_free = NULL;
@@ -104,7 +106,7 @@ static void copy_templates(const char *template_dir)
if (!template_dir)
template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
if (!template_dir)
- template_dir = init_db_template_dir;
+ template_dir = init_template_dir;
if (!template_dir)
template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR);
if (!template_dir[0]) {
@@ -148,14 +150,7 @@ free_return:
free(to_free);
strbuf_release(&path);
strbuf_release(&template_path);
-}
-
-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;
+ clear_repository_format(&template_format);
}
/*
@@ -172,20 +167,41 @@ static int needs_work_tree_config(const char *git_dir, const char *work_tree)
return 1;
}
+void initialize_repository_version(int hash_algo, int reinit)
+{
+ char repo_version_string[10];
+ int repo_version = GIT_REPO_VERSION;
+
+ if (hash_algo != GIT_HASH_SHA1)
+ repo_version = GIT_REPO_VERSION_READ;
+
+ /* This forces creation of new config file */
+ xsnprintf(repo_version_string, sizeof(repo_version_string),
+ "%d", repo_version);
+ git_config_set("core.repositoryformatversion", repo_version_string);
+
+ if (hash_algo != GIT_HASH_SHA1)
+ git_config_set("extensions.objectformat",
+ hash_algos[hash_algo].name);
+ else if (reinit)
+ git_config_set_gently("extensions.objectformat", NULL);
+}
+
static int create_default_files(const char *template_path,
- const char *original_git_dir)
+ const char *original_git_dir,
+ const char *initial_branch,
+ const struct repository_format *fmt,
+ int quiet)
{
struct stat st1;
struct strbuf buf = STRBUF_INIT;
char *path;
- char repo_version_string[10];
char junk[2];
int reinit;
int filemode;
struct strbuf err = STRBUF_INIT;
-
- /* Just look for `init.templatedir` */
- git_config(git_init_db_config, NULL);
+ const char *init_template_dir = NULL;
+ const char *work_tree = get_git_work_tree();
/*
* First copy the templates -- we might have the default
@@ -196,7 +212,9 @@ static int create_default_files(const char *template_path,
* values (since we've just potentially changed what's available on
* disk).
*/
- copy_templates(template_path);
+ git_config_get_pathname("init.templatedir", &init_template_dir);
+ copy_templates(template_path, init_template_dir);
+ free((char *)init_template_dir);
git_config_clear();
reset_shared_repository();
git_config(git_default_config, NULL);
@@ -205,7 +223,7 @@ static int create_default_files(const char *template_path,
* We must make sure command-line options continue to override any
* values we might have just re-read from the config.
*/
- is_bare_repository_cfg = init_is_bare_repository;
+ is_bare_repository_cfg = init_is_bare_repository || !work_tree;
if (init_shared_repository != -1)
set_shared_repository(init_shared_repository);
@@ -228,21 +246,29 @@ static int create_default_files(const char *template_path,
die("failed to set up refs db: %s", err.buf);
/*
- * Create the default symlink from ".git/HEAD" to the "master"
- * branch, if it does not exist yet.
+ * Point the HEAD symref to the initial branch with if HEAD does
+ * not yet exist.
*/
path = git_path_buf(&buf, "HEAD");
reinit = (!access(path, R_OK)
|| readlink(path, junk, sizeof(junk)-1) != -1);
if (!reinit) {
- if (create_symref("HEAD", "refs/heads/master", NULL) < 0)
+ char *ref;
+
+ if (!initial_branch)
+ initial_branch = git_default_branch_name(quiet);
+
+ ref = xstrfmt("refs/heads/%s", initial_branch);
+ if (check_refname_format(ref, 0) < 0)
+ die(_("invalid initial branch name: '%s'"),
+ initial_branch);
+
+ if (create_symref("HEAD", ref, NULL) < 0)
exit(1);
+ free(ref);
}
- /* This forces creation of new config file */
- xsnprintf(repo_version_string, sizeof(repo_version_string),
- "%d", GIT_REPO_VERSION);
- git_config_set("core.repositoryformatversion", repo_version_string);
+ initialize_repository_version(fmt->hash_algo, 0);
/* Check filemode trustability */
path = git_path_buf(&buf, "config");
@@ -261,7 +287,6 @@ static int create_default_files(const char *template_path,
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 == LOG_REFS_UNSET)
@@ -330,17 +355,40 @@ static void separate_git_dir(const char *git_dir, const char *git_link)
if (rename(src, git_dir))
die_errno(_("unable to move %s to %s"), src, git_dir);
+ repair_worktrees(NULL, NULL);
}
write_file(git_link, "gitdir: %s", git_dir);
}
+static void validate_hash_algorithm(struct repository_format *repo_fmt, int hash)
+{
+ const char *env = getenv(GIT_DEFAULT_HASH_ENVIRONMENT);
+ /*
+ * If we already have an initialized repo, don't allow the user to
+ * specify a different algorithm, as that could cause corruption.
+ * Otherwise, if the user has specified one on the command line, use it.
+ */
+ if (repo_fmt->version >= 0 && hash != GIT_HASH_UNKNOWN && hash != repo_fmt->hash_algo)
+ die(_("attempt to reinitialize repository with different hash"));
+ else if (hash != GIT_HASH_UNKNOWN)
+ repo_fmt->hash_algo = hash;
+ else if (env) {
+ int env_algo = hash_algo_by_name(env);
+ if (env_algo == GIT_HASH_UNKNOWN)
+ die(_("unknown hash algorithm '%s'"), env);
+ repo_fmt->hash_algo = env_algo;
+ }
+}
+
int init_db(const char *git_dir, const char *real_git_dir,
- const char *template_dir, unsigned int flags)
+ const char *template_dir, int hash, const char *initial_branch,
+ unsigned int flags)
{
int reinit;
int exist_ok = flags & INIT_DB_EXIST_OK;
char *original_git_dir = real_pathdup(git_dir, 1);
+ struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
if (real_git_dir) {
struct stat st;
@@ -351,16 +399,19 @@ int init_db(const char *git_dir, const char *real_git_dir,
if (!exist_ok && !stat(real_git_dir, &st))
die(_("%s already exists"), real_git_dir);
- set_git_dir(real_path(real_git_dir));
+ set_git_dir(real_git_dir, 1);
git_dir = get_git_dir();
separate_git_dir(git_dir, original_git_dir);
}
else {
- set_git_dir(real_path(git_dir));
+ set_git_dir(git_dir, 1);
git_dir = get_git_dir();
}
startup_info->have_repository = 1;
+ /* Ensure `core.hidedotfiles` is processed */
+ git_config(platform_core_config, NULL);
+
safe_create_dir(git_dir, 0);
init_is_bare_repository = is_bare_repository();
@@ -370,9 +421,16 @@ int init_db(const char *git_dir, const char *real_git_dir,
* 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();
+ check_repository_format(&repo_fmt);
- reinit = create_default_files(template_dir, original_git_dir);
+ validate_hash_algorithm(&repo_fmt, hash);
+
+ reinit = create_default_files(template_dir, original_git_dir,
+ initial_branch, &repo_fmt,
+ flags & INIT_DB_QUIET);
+ if (reinit && initial_branch)
+ warning(_("re-init: ignored --initial-branch=%s"),
+ initial_branch);
create_object_directory();
@@ -474,6 +532,9 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
const char *work_tree;
const char *template_dir = NULL;
unsigned int flags = 0;
+ const char *object_format = NULL;
+ const char *initial_branch = NULL;
+ int hash_algo = GIT_HASH_UNKNOWN;
const struct option init_db_options[] = {
OPT_STRING(0, "template", &template_dir, N_("template-directory"),
N_("directory from which templates will be used")),
@@ -486,14 +547,26 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
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_END()
};
argc = parse_options(argc, argv, prefix, init_db_options, init_db_usage, 0);
+ if (real_git_dir && is_bare_repository_cfg == 1)
+ die(_("--separate-git-dir and --bare are mutually exclusive"));
+
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:
@@ -535,6 +608,12 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
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 (init_shared_repository != -1)
set_shared_repository(init_shared_repository);
@@ -542,8 +621,8 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
* 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);
+ 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>)"),
@@ -556,6 +635,30 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
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);
@@ -577,12 +680,17 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
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, flags);
+ return init_db(git_dir, real_git_dir, template_dir, hash_algo,
+ initial_branch, flags);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 20:23:02 +0000