static int inside_git_dir = -1;
static int inside_work_tree = -1;
+static int work_tree_config_is_bogus;
+static struct string_list unknown_extensions = STRING_LIST_INIT_DUP;
/*
* The input parameter must contain an absolute path, and it must already be
if (arg[2] == '\0') /* ":/" is root dir, always exists */
return 1;
name = arg + 2;
- } else if (prefix)
+ } else if (!no_wildcard(arg))
+ return 1;
+ else if (prefix)
name = prefix_filename(prefix, strlen(prefix), arg);
else
name = arg;
"'git <command> [<revision>...] -- [<file>...]'", arg);
}
+int get_common_dir(struct strbuf *sb, const char *gitdir)
+{
+ struct strbuf data = STRBUF_INIT;
+ struct strbuf path = STRBUF_INIT;
+ const char *git_common_dir = getenv(GIT_COMMON_DIR_ENVIRONMENT);
+ int ret = 0;
+ if (git_common_dir) {
+ strbuf_addstr(sb, git_common_dir);
+ return 1;
+ }
+ strbuf_addf(&path, "%s/commondir", gitdir);
+ if (file_exists(path.buf)) {
+ if (strbuf_read_file(&data, path.buf, 0) <= 0)
+ die_errno(_("failed to read %s"), path.buf);
+ while (data.len && (data.buf[data.len - 1] == '\n' ||
+ data.buf[data.len - 1] == '\r'))
+ data.len--;
+ data.buf[data.len] = '\0';
+ strbuf_reset(&path);
+ if (!is_absolute_path(data.buf))
+ strbuf_addf(&path, "%s/", gitdir);
+ strbuf_addbuf(&path, &data);
+ strbuf_addstr(sb, real_path(path.buf));
+ ret = 1;
+ } else
+ strbuf_addstr(sb, gitdir);
+ strbuf_release(&data);
+ strbuf_release(&path);
+ return ret;
+}
/*
* Test if it looks like we're at a git directory.
*/
int is_git_directory(const char *suspect)
{
- char path[PATH_MAX];
- size_t len = strlen(suspect);
+ struct strbuf path = STRBUF_INIT;
+ int ret = 0;
+ size_t len;
- if (PATH_MAX <= len + strlen("/objects"))
- die("Too long path: %.*s", 60, suspect);
- strcpy(path, suspect);
+ /* Check worktree-related signatures */
+ strbuf_addf(&path, "%s/HEAD", suspect);
+ if (validate_headref(path.buf))
+ goto done;
+
+ strbuf_reset(&path);
+ get_common_dir(&path, suspect);
+ len = path.len;
+
+ /* Check non-worktree-related signatures */
if (getenv(DB_ENVIRONMENT)) {
if (access(getenv(DB_ENVIRONMENT), X_OK))
- return 0;
+ goto done;
}
else {
- strcpy(path + len, "/objects");
- if (access(path, X_OK))
- return 0;
+ strbuf_setlen(&path, len);
+ strbuf_addstr(&path, "/objects");
+ if (access(path.buf, X_OK))
+ goto done;
}
- strcpy(path + len, "/refs");
- if (access(path, X_OK))
- return 0;
-
- strcpy(path + len, "/HEAD");
- if (validate_headref(path))
- return 0;
+ strbuf_setlen(&path, len);
+ strbuf_addstr(&path, "/refs");
+ if (access(path.buf, X_OK))
+ goto done;
- return 1;
+ ret = 1;
+done:
+ strbuf_release(&path);
+ return ret;
}
int is_inside_git_dir(void)
if (initialized)
return;
+
+ if (work_tree_config_is_bogus)
+ die("unable to set up work tree using invalid config");
+
work_tree = get_git_work_tree();
git_dir = get_git_dir();
if (!is_absolute_path(git_dir))
initialized = 1;
}
+static int check_repo_format(const char *var, const char *value, void *cb)
+{
+ const char *ext;
+
+ if (strcmp(var, "core.repositoryformatversion") == 0)
+ repository_format_version = git_config_int(var, value);
+ else if (strcmp(var, "core.sharedrepository") == 0)
+ shared_repository = git_config_perm(var, value);
+ else if (skip_prefix(var, "extensions.", &ext)) {
+ /*
+ * record any known extensions here; otherwise,
+ * we fall through to recording it as unknown, and
+ * check_repository_format will complain
+ */
+ if (!strcmp(ext, "noop"))
+ ;
+ else
+ string_list_append(&unknown_extensions, ext);
+ }
+ return 0;
+}
+
static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
{
- char repo_config[PATH_MAX+1];
+ struct strbuf sb = STRBUF_INIT;
+ const char *repo_config;
+ config_fn_t fn;
+ int ret = 0;
+
+ string_list_clear(&unknown_extensions, 0);
+
+ if (get_common_dir(&sb, gitdir))
+ fn = check_repo_format;
+ else
+ fn = check_repository_format_version;
+ strbuf_addstr(&sb, "/config");
+ repo_config = sb.buf;
/*
* git_config() can't be used here because it calls git_pathdup()
* Use a gentler version of git_config() to check if this repo
* is a good one.
*/
- snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
- git_config_early(check_repository_format_version, NULL, repo_config);
- if (GIT_REPO_VERSION < repository_format_version) {
+ git_config_early(fn, NULL, repo_config);
+ if (GIT_REPO_VERSION_READ < repository_format_version) {
if (!nongit_ok)
die ("Expected git repo version <= %d, found %d",
- GIT_REPO_VERSION, repository_format_version);
+ GIT_REPO_VERSION_READ, repository_format_version);
warning("Expected git repo version <= %d, found %d",
- GIT_REPO_VERSION, repository_format_version);
+ GIT_REPO_VERSION_READ, repository_format_version);
warning("Please upgrade Git");
*nongit_ok = -1;
- return -1;
+ ret = -1;
}
- return 0;
+
+ if (repository_format_version >= 1 && unknown_extensions.nr) {
+ int i;
+
+ if (!nongit_ok)
+ die("unknown repository extension: %s",
+ unknown_extensions.items[0].string);
+
+ for (i = 0; i < unknown_extensions.nr; i++)
+ warning("unknown repository extension: %s",
+ unknown_extensions.items[i].string);
+ *nongit_ok = -1;
+ ret = -1;
+ }
+
+ strbuf_release(&sb);
+ return ret;
+}
+
+static void update_linked_gitdir(const char *gitfile, const char *gitdir)
+{
+ struct strbuf path = STRBUF_INIT;
+ struct stat st;
+
+ strbuf_addf(&path, "%s/gitfile", gitdir);
+ if (stat(path.buf, &st) || st.st_mtime + 24 * 3600 < time(NULL))
+ write_file(path.buf, 0, "%s\n", gitfile);
+ strbuf_release(&path);
}
/*
if (!is_git_directory(dir))
die("Not a git repository: %s", dir);
+
+ update_linked_gitdir(path, dir);
path = real_path(dir);
free(buf);
if (work_tree_env)
set_git_work_tree(work_tree_env);
else if (is_bare_repository_cfg > 0) {
- if (git_work_tree_cfg) /* #22.2, #30 */
- die("core.bare and core.worktree do not make sense");
+ if (git_work_tree_cfg) {
+ /* #22.2, #30 */
+ warning("core.bare and core.worktree do not make sense");
+ work_tree_config_is_bogus = 1;
+ }
/* #18, #26 */
set_git_dir(gitdirenv);
int check_repository_format_version(const char *var, const char *value, void *cb)
{
- if (strcmp(var, "core.repositoryformatversion") == 0)
- repository_format_version = git_config_int(var, value);
- else if (strcmp(var, "core.sharedrepository") == 0)
- shared_repository = git_config_perm(var, value);
- else if (strcmp(var, "core.bare") == 0) {
+ int ret = check_repo_format(var, value, cb);
+ if (ret)
+ return ret;
+ if (strcmp(var, "core.bare") == 0) {
is_bare_repository_cfg = git_config_bool(var, value);
if (is_bare_repository_cfg == 1)
inside_work_tree = -1;