#include "promisor-remote.h"
#include "quote.h"
#include "trace2.h"
-#include "wrapper.h"
+#include "worktree.h"
+ #include "exec-cmd.h"
static int inside_git_dir = -1;
static int inside_work_tree = -1;
return data.is_safe;
}
-static int allowed_bare_repo_cb(const char *key, const char *value, void *d)
+ void die_upon_dubious_ownership(const char *gitfile, const char *worktree,
+ const char *gitdir)
+ {
+ struct strbuf report = STRBUF_INIT, quoted = STRBUF_INIT;
+ const char *path;
+
+ if (ensure_valid_ownership(gitfile, worktree, gitdir, &report))
+ return;
+
+ strbuf_complete(&report, '\n');
+ path = gitfile ? gitfile : gitdir;
+ sq_quote_buf_pretty("ed, path);
+
+ die(_("detected dubious ownership in repository at '%s'\n"
+ "%s"
+ "To add an exception for this directory, call:\n"
+ "\n"
+ "\tgit config --global --add safe.directory %s"),
+ path, report.buf, quoted.buf);
+ }
+
+static int allowed_bare_repo_cb(const char *key, const char *value,
+ const struct config_context *ctx UNUSED,
+ void *d)
{
enum allowed_bare_repo *allowed_bare_repo = d;
#endif
}
-#ifndef DEFAULT_GIT_TEMPLATE_DIR
-#define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates"
-#endif
-
+ struct template_dir_cb_data {
+ char *path;
+ int initialized;
+ };
+
-static int template_dir_cb(const char *key, const char *value, void *d)
++static int template_dir_cb(const char *key, const char *value,
++ const struct config_context *ctx, void *d)
+ {
+ struct template_dir_cb_data *data = d;
+
+ if (strcmp(key, "init.templatedir"))
+ return 0;
+
+ if (!value) {
+ data->path = NULL;
+ } else {
+ char *path = NULL;
+
+ FREE_AND_NULL(data->path);
+ if (!git_config_pathname((const char **)&path, key, value))
+ data->path = path ? path : xstrdup(value);
+ }
+
+ return 0;
+ }
+
+ const char *get_template_dir(const char *option_template)
+ {
+ const char *template_dir = option_template;
+
+ if (!template_dir)
+ template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
+ if (!template_dir) {
+ static struct template_dir_cb_data data;
+
+ if (!data.initialized) {
+ git_protected_config(template_dir_cb, &data);
+ data.initialized = 1;
+ }
+ template_dir = data.path;
+ }
+ if (!template_dir) {
+ static char *dir;
+
+ if (!dir)
+ dir = system_path(DEFAULT_GIT_TEMPLATE_DIR);
+ template_dir = dir;
+ }
+ return template_dir;
+ }
++
+#ifdef NO_TRUSTABLE_FILEMODE
+#define TEST_FILEMODE 0
+#else
+#define TEST_FILEMODE 1
+#endif
+
+#define GIT_DEFAULT_HASH_ENVIRONMENT "GIT_DEFAULT_HASH"
+
+static void copy_templates_1(struct strbuf *path, struct strbuf *template_path,
+ DIR *dir)
+{
+ size_t path_baselen = path->len;
+ size_t template_baselen = template_path->len;
+ 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->buf, 1);
+ while ((de = readdir(dir)) != NULL) {
+ struct stat st_git, st_template;
+ int exists = 0;
+
+ strbuf_setlen(path, path_baselen);
+ strbuf_setlen(template_path, template_baselen);
+
+ if (de->d_name[0] == '.')
+ continue;
+ strbuf_addstr(path, de->d_name);
+ strbuf_addstr(template_path, de->d_name);
+ if (lstat(path->buf, &st_git)) {
+ if (errno != ENOENT)
+ die_errno(_("cannot stat '%s'"), path->buf);
+ }
+ else
+ exists = 1;
+
+ if (lstat(template_path->buf, &st_template))
+ die_errno(_("cannot stat template '%s'"), template_path->buf);
+
+ if (S_ISDIR(st_template.st_mode)) {
+ DIR *subdir = opendir(template_path->buf);
+ if (!subdir)
+ die_errno(_("cannot opendir '%s'"), template_path->buf);
+ strbuf_addch(path, '/');
+ strbuf_addch(template_path, '/');
+ copy_templates_1(path, template_path, subdir);
+ closedir(subdir);
+ }
+ else if (exists)
+ continue;
+ else if (S_ISLNK(st_template.st_mode)) {
+ struct strbuf lnk = STRBUF_INIT;
+ if (strbuf_readlink(&lnk, template_path->buf,
+ st_template.st_size) < 0)
+ die_errno(_("cannot readlink '%s'"), template_path->buf);
+ if (symlink(lnk.buf, path->buf))
+ die_errno(_("cannot symlink '%s' '%s'"),
+ lnk.buf, path->buf);
+ strbuf_release(&lnk);
+ }
+ else if (S_ISREG(st_template.st_mode)) {
+ if (copy_file(path->buf, template_path->buf, st_template.st_mode))
+ die_errno(_("cannot copy '%s' to '%s'"),
+ template_path->buf, path->buf);
+ }
+ else
+ error(_("ignoring template %s"), template_path->buf);
+ }
+}
+
- static void copy_templates(const char *template_dir, const char *init_template_dir)
++static void copy_templates(const char *option_template)
+{
++ const char *template_dir = get_template_dir(option_template);
+ struct strbuf path = STRBUF_INIT;
+ struct strbuf template_path = STRBUF_INIT;
+ size_t template_len;
+ struct repository_format template_format = REPOSITORY_FORMAT_INIT;
+ struct strbuf err = STRBUF_INIT;
+ DIR *dir;
+ char *to_free = NULL;
+
- if (!template_dir)
- template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
- if (!template_dir)
- template_dir = init_template_dir;
- if (!template_dir)
- template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR);
- if (!template_dir[0]) {
- free(to_free);
++ if (!template_dir || !*template_dir)
+ return;
- }
+
+ strbuf_addstr(&template_path, template_dir);
+ strbuf_complete(&template_path, '/');
+ template_len = template_path.len;
+
+ dir = opendir(template_path.buf);
+ if (!dir) {
+ warning(_("templates not found in %s"), template_dir);
+ goto free_return;
+ }
+
+ /* Make sure that template is from the correct vintage */
+ strbuf_addstr(&template_path, "config");
+ read_repository_format(&template_format, template_path.buf);
+ strbuf_setlen(&template_path, template_len);
+
+ /*
+ * No mention of version at all is OK, but anything else should be
+ * verified.
+ */
+ if (template_format.version >= 0 &&
+ verify_repository_format(&template_format, &err) < 0) {
+ warning(_("not copying templates from '%s': %s"),
+ template_dir, err.buf);
+ strbuf_release(&err);
+ goto close_free_return;
+ }
+
+ strbuf_addstr(&path, get_git_common_dir());
+ strbuf_complete(&path, '/');
+ copy_templates_1(&path, &template_path, dir);
+close_free_return:
+ closedir(dir);
+free_return:
+ free(to_free);
+ strbuf_release(&path);
+ strbuf_release(&template_path);
+ clear_repository_format(&template_format);
+}
+
+/*
+ * If the git_dir is not directly inside the working tree, then git will not
+ * find it by default, and we need to set the worktree explicitly.
+ */
+static int needs_work_tree_config(const char *git_dir, const char *work_tree)
+{
+ if (!strcmp(work_tree, "/") && !strcmp(git_dir, "/.git"))
+ return 0;
+ if (skip_prefix(git_dir, work_tree, &git_dir) &&
+ !strcmp(git_dir, "/.git"))
+ return 0;
+ 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 *initial_branch,
+ const struct repository_format *fmt,
+ int prev_bare_repository,
+ int init_shared_repository,
+ int quiet)
+{
+ struct stat st1;
+ struct strbuf buf = STRBUF_INIT;
+ char *path;
+ char junk[2];
+ int reinit;
+ int filemode;
+ struct strbuf err = STRBUF_INIT;
- const char *init_template_dir = NULL;
+ const char *work_tree = get_git_work_tree();
+
+ /*
+ * First copy the templates -- we might have the default
+ * config file there, in which case we would want to read
+ * from it after installing.
+ *
+ * Before reading that config, we also need to clear out any cached
+ * values (since we've just potentially changed what's available on
+ * disk).
+ */
- git_config_get_pathname("init.templatedir", &init_template_dir);
- copy_templates(template_path, init_template_dir);
- free((char *)init_template_dir);
++ copy_templates(template_path);
+ git_config_clear();
+ reset_shared_repository();
+ git_config(git_default_config, NULL);
+
+ /*
+ * We must make sure command-line options continue to override any
+ * values we might have just re-read from the config.
+ */
+ if (init_shared_repository != -1)
+ set_shared_repository(init_shared_repository);
+ /*
+ * TODO: heed core.bare from config file in templates if no
+ * command-line override given
+ */
+ is_bare_repository_cfg = prev_bare_repository || !work_tree;
+ /* TODO (continued):
+ *
+ * Unfortunately, the line above is equivalent to
+ * is_bare_repository_cfg = !work_tree;
+ * which ignores the config entirely even if no `--[no-]bare`
+ * command line option was present.
+ *
+ * To see why, note that before this function, there was this call:
+ * prev_bare_repository = is_bare_repository()
+ * expanding the right hand side:
+ * = is_bare_repository_cfg && !get_git_work_tree()
+ * = is_bare_repository_cfg && !work_tree
+ * note that the last simplification above is valid because nothing
+ * calls repo_init() or set_git_work_tree() between any of the
+ * relevant calls in the code, and thus the !get_git_work_tree()
+ * calls will return the same result each time. So, what we are
+ * interested in computing is the right hand side of the line of
+ * code just above this comment:
+ * prev_bare_repository || !work_tree
+ * = is_bare_repository_cfg && !work_tree || !work_tree
+ * = !work_tree
+ * because "A && !B || !B == !B" for all boolean values of A & B.
+ */
+
+ /*
+ * We would have created the above under user's umask -- under
+ * shared-repository settings, we would need to fix them up.
+ */
+ if (get_shared_repository()) {
+ adjust_shared_perm(get_git_dir());
+ }
+
+ /*
+ * We need to create a "refs" dir in any case so that older
+ * versions of git can tell that this is a repository.
+ */
+ safe_create_dir(git_path("refs"), 1);
+ adjust_shared_perm(git_path("refs"));
+
+ if (refs_init_db(&err))
+ die("failed to set up refs db: %s", err.buf);
+
+ /*
+ * 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) {
+ 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);
+ }
+
+ initialize_repository_version(fmt->hash_algo, 0);
+
+ /* Check filemode trustability */
+ path = git_path_buf(&buf, "config");
+ 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 &&
+ !chmod(path, st1.st_mode));
+ if (filemode && !reinit && (st1.st_mode & S_IXUSR))
+ filemode = 0;
+ }
+ git_config_set("core.filemode", filemode ? "true" : "false");
+
+ if (is_bare_repository())
+ git_config_set("core.bare", "true");
+ else {
+ git_config_set("core.bare", "false");
+ /* allow template config file to override the default */
+ if (log_all_ref_updates == LOG_REFS_UNSET)
+ git_config_set("core.logallrefupdates", "true");
+ if (needs_work_tree_config(original_git_dir, work_tree))
+ git_config_set("core.worktree", work_tree);
+ }
+
+ if (!reinit) {
+ /* Check if symlink is supported in the work tree */
+ path = git_path_buf(&buf, "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 = git_path_buf(&buf, "CoNfIg");
+ if (!access(path, F_OK))
+ git_config_set("core.ignorecase", "true");
+ probe_utf8_pathname_composition();
+ }
+
+ strbuf_release(&buf);
+ return reinit;
+}
+
+static void create_object_directory(void)
+{
+ struct strbuf path = STRBUF_INIT;
+ size_t baselen;
+
+ strbuf_addstr(&path, get_object_directory());
+ baselen = path.len;
+
+ safe_create_dir(path.buf, 1);
+
+ strbuf_setlen(&path, baselen);
+ strbuf_addstr(&path, "/pack");
+ safe_create_dir(path.buf, 1);
+
+ strbuf_setlen(&path, baselen);
+ strbuf_addstr(&path, "/info");
+ safe_create_dir(path.buf, 1);
+
+ strbuf_release(&path);
+}
+
+static void separate_git_dir(const char *git_dir, const char *git_link)
+{
+ struct stat st;
+
+ 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);
+ 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, int hash, const char *initial_branch,
+ int init_shared_repository, 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;
+ int prev_bare_repository;
+
+ 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);
+
+ set_git_dir(real_git_dir, 1);
+ git_dir = get_git_dir();
+ separate_git_dir(git_dir, original_git_dir);
+ }
+ else {
+ 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);
+
+ prev_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(&repo_fmt);
+
+ validate_hash_algorithm(&repo_fmt, hash);
+
+ reinit = create_default_files(template_dir, original_git_dir,
+ initial_branch, &repo_fmt,
+ prev_bare_repository,
+ init_shared_repository,
+ flags & INIT_DB_QUIET);
+ if (reinit && initial_branch)
+ warning(_("re-init: ignored --initial-branch=%s"),
+ initial_branch);
+
+ create_object_directory();
+
+ if (get_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 (get_shared_repository() < 0)
+ /* force to the mode value */
+ xsnprintf(buf, sizeof(buf), "0%o", -get_shared_repository());
+ else if (get_shared_repository() == PERM_GROUP)
+ xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_GROUP);
+ else if (get_shared_repository() == PERM_EVERYBODY)
+ xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_EVERYBODY);
+ else
+ BUG("invalid value for shared_repository");
+ git_config_set("core.sharedrepository", buf);
+ git_config_set("receive.denyNonFastforwards", "true");
+ }
+
+ if (!(flags & INIT_DB_QUIET)) {
+ int len = strlen(git_dir);
+
+ if (reinit)
+ printf(get_shared_repository()
+ ? _("Reinitialized existing shared Git repository in %s%s\n")
+ : _("Reinitialized existing Git repository in %s%s\n"),
+ git_dir, len && git_dir[len-1] != '/' ? "/" : "");
+ else
+ printf(get_shared_repository()
+ ? _("Initialized empty shared Git repository in %s%s\n")
+ : _("Initialized empty Git repository in %s%s\n"),
+ git_dir, len && git_dir[len-1] != '/' ? "/" : "");
+ }
+
+ free(original_git_dir);
+ return 0;
+}
projects / thirdparty / git.git / commitdiff
