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index 276916052795c5ffa872b57a7e6723edc71dfdc4..3ee9c2eec842900dac6bf9717c1739b111f89893 100644 (file)
--- a/setup.c
+++ b/setup.c
initialized = 1;
}
-static int check_repository_format_gently(int *nongit_ok)
+static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
{
- git_config(check_repository_format_version, NULL);
+ char repo_config[PATH_MAX+1];
+
+ /*
+ * git_config() can't be used here because it calls git_pathdup()
+ * to get $GIT_CONFIG/config. That call will make setup_git_env()
+ * set git_dir to ".git".
+ *
+ * We are in gitdir setup, no git dir has been found useable yet.
+ * Use a gentler version of git_config() to check if this repo
+ * is a good one.
+ */
+ snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
+ git_config_early(check_repository_format_version, NULL, repo_config);
if (GIT_REPO_VERSION < repository_format_version) {
if (!nongit_ok)
die ("Expected git repo version <= %d, found %d",
return path;
}
+static const char *setup_explicit_git_dir(const char *gitdirenv,
+ const char *work_tree_env, int *nongit_ok)
+{
+ static char buffer[1024 + 1];
+ const char *retval;
+
+ if (startup_info)
+ startup_info->setup_explicit = 1;
+ if (PATH_MAX - 40 < strlen(gitdirenv))
+ die("'$%s' too big", GIT_DIR_ENVIRONMENT);
+ if (!is_git_directory(gitdirenv)) {
+ if (nongit_ok) {
+ *nongit_ok = 1;
+ return NULL;
+ }
+ die("Not a git repository: '%s'", gitdirenv);
+ }
+ if (!work_tree_env) {
+ retval = set_work_tree(gitdirenv);
+ /* config may override worktree */
+ if (check_repository_format_gently(gitdirenv, nongit_ok))
+ return NULL;
+ return retval;
+ }
+ if (check_repository_format_gently(gitdirenv, nongit_ok))
+ return NULL;
+ retval = get_relative_cwd(buffer, sizeof(buffer) - 1,
+ get_git_work_tree());
+ if (!retval || !*retval)
+ return NULL;
+ set_git_dir(make_absolute_path(gitdirenv));
+ if (chdir(work_tree_env) < 0)
+ die_errno ("Could not chdir to '%s'", work_tree_env);
+ strcat(buffer, "/");
+ return retval;
+}
+
+static const char *setup_discovered_git_dir(const char *gitdir,
+ char *cwd, int offset, int len,
+ int *nongit_ok)
+{
+ if (check_repository_format_gently(gitdir, nongit_ok))
+ return NULL;
+
+ /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
+ if (is_bare_repository_cfg > 0) {
+ set_git_dir(offset == len ? gitdir : make_absolute_path(gitdir));
+ if (chdir(cwd))
+ die_errno("Could not come back to cwd");
+ return NULL;
+ }
+
+ /* #0, #1, #5, #8, #9, #12, #13 */
+ set_git_work_tree(".");
+ if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
+ set_git_dir(gitdir);
+ inside_git_dir = 0;
+ inside_work_tree = 1;
+ if (offset == len)
+ return NULL;
+
+ /* Make "offset" point to past the '/', and add a '/' at the end */
+ offset++;
+ cwd[len++] = '/';
+ cwd[len] = 0;
+ return cwd + offset;
+}
+
+/* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
+static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
+{
+ int root_len;
+
+ if (check_repository_format_gently(".", nongit_ok))
+ return NULL;
+
+ inside_git_dir = 1;
+ inside_work_tree = 0;
+ if (offset != len) {
+ if (chdir(cwd))
+ die_errno("Cannot come back to cwd");
+ root_len = offset_1st_component(cwd);
+ cwd[offset > root_len ? offset : root_len] = '\0';
+ set_git_dir(cwd);
+ }
+ else
+ set_git_dir(".");
+ return NULL;
+}
+
+static const char *setup_nongit(const char *cwd, int *nongit_ok)
+{
+ if (!nongit_ok)
+ die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
+ if (chdir(cwd))
+ die_errno("Cannot come back to cwd");
+ *nongit_ok = 1;
+ return NULL;
+}
+
+static dev_t get_device_or_die(const char *path, const char *prefix)
+{
+ struct stat buf;
+ if (stat(path, &buf))
+ die_errno("failed to stat '%s%s%s'",
+ prefix ? prefix : "",
+ prefix ? "/" : "", path);
+ return buf.st_dev;
+}
+
/*
* We cannot decide in this function whether we are in the work tree or
* not, since the config can only be read _after_ this function was called.
*/
-const char *setup_git_directory_gently(int *nongit_ok)
+static const char *setup_git_directory_gently_1(int *nongit_ok)
{
const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
static char cwd[PATH_MAX+1];
- const char *gitdirenv;
- const char *gitfile_dir;
- int len, offset, ceil_offset, root_len;
+ const char *gitdirenv, *ret;
+ char *gitfile;
+ int len, offset, ceil_offset;
dev_t current_device = 0;
int one_filesystem = 1;
- struct stat buf;
/*
* Let's assume that we are in a git repository.
* validation.
*/
gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
- if (gitdirenv) {
- if (PATH_MAX - 40 < strlen(gitdirenv))
- die("'$%s' too big", GIT_DIR_ENVIRONMENT);
- if (is_git_directory(gitdirenv)) {
- static char buffer[1024 + 1];
- const char *retval;
-
- if (!work_tree_env) {
- retval = set_work_tree(gitdirenv);
- /* config may override worktree */
- if (check_repository_format_gently(nongit_ok))
- return NULL;
- return retval;
- }
- if (check_repository_format_gently(nongit_ok))
- return NULL;
- retval = get_relative_cwd(buffer, sizeof(buffer) - 1,
- get_git_work_tree());
- if (!retval || !*retval)
- return NULL;
- set_git_dir(make_absolute_path(gitdirenv));
- if (chdir(work_tree_env) < 0)
- die_errno ("Could not chdir to '%s'", work_tree_env);
- strcat(buffer, "/");
- return retval;
- }
- if (nongit_ok) {
- *nongit_ok = 1;
- return NULL;
- }
- die("Not a git repository: '%s'", gitdirenv);
- }
+ if (gitdirenv)
+ return setup_explicit_git_dir(gitdirenv, work_tree_env, nongit_ok);
if (!getcwd(cwd, sizeof(cwd)-1))
die_errno("Unable to read current working directory");
*/
offset = len = strlen(cwd);
one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
- if (one_filesystem) {
- if (stat(".", &buf))
- die_errno("failed to stat '.'");
- current_device = buf.st_dev;
- }
+ if (one_filesystem)
+ current_device = get_device_or_die(".", NULL);
for (;;) {
- gitfile_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
- if (gitfile_dir) {
- if (set_git_dir(gitfile_dir))
- die("Repository setup failed");
- break;
+ gitfile = (char*)read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
+ if (gitfile)
+ gitdirenv = gitfile = xstrdup(gitfile);
+ else {
+ if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
+ gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
}
- if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
- break;
- if (is_git_directory(".")) {
- inside_git_dir = 1;
- if (!work_tree_env)
- inside_work_tree = 0;
- if (offset != len) {
- root_len = offset_1st_component(cwd);
- cwd[offset > root_len ? offset : root_len] = '\0';
- set_git_dir(cwd);
- } else
- set_git_dir(".");
- check_repository_format_gently(nongit_ok);
- return NULL;
+
+ if (gitdirenv) {
+ ret = setup_discovered_git_dir(gitdirenv,
+ cwd, offset, len,
+ nongit_ok);
+ free(gitfile);
+ return ret;
}
+ free(gitfile);
+
+ if (is_git_directory("."))
+ return setup_bare_git_dir(cwd, offset, len, nongit_ok);
+
while (--offset > ceil_offset && cwd[offset] != '/');
- if (offset <= ceil_offset) {
- if (nongit_ok) {
- if (chdir(cwd))
- die_errno("Cannot come back to cwd");
- *nongit_ok = 1;
- return NULL;
- }
- die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
- }
+ if (offset <= ceil_offset)
+ return setup_nongit(cwd, nongit_ok);
if (one_filesystem) {
- if (stat("..", &buf)) {
- cwd[offset] = '\0';
- die_errno("failed to stat '%s/..'", cwd);
- }
- if (buf.st_dev != current_device) {
+ dev_t parent_device = get_device_or_die("..", cwd);
+ if (parent_device != current_device) {
if (nongit_ok) {
if (chdir(cwd))
die_errno("Cannot come back to cwd");
die_errno("Cannot change to '%s/..'", cwd);
}
}
+}
- inside_git_dir = 0;
- if (!work_tree_env)
- inside_work_tree = 1;
- root_len = offset_1st_component(cwd);
- git_work_tree_cfg = xstrndup(cwd, offset > root_len ? offset : root_len);
- if (check_repository_format_gently(nongit_ok))
- return NULL;
- if (offset == len)
- return NULL;
+const char *setup_git_directory_gently(int *nongit_ok)
+{
+ const char *prefix;
- /* Make "offset" point to past the '/', and add a '/' at the end */
- offset++;
- cwd[len++] = '/';
- cwd[len] = 0;
- return cwd + offset;
+ prefix = setup_git_directory_gently_1(nongit_ok);
+ if (startup_info)
+ startup_info->have_repository = !nongit_ok || !*nongit_ok;
+ return prefix;
}
int git_config_perm(const char *var, const char *value)
@@ -546,7 +617,7 @@ int check_repository_format_version(const char *var, const char *value, void *cb
int check_repository_format(void)
{
- return check_repository_format_gently(NULL);
+ return check_repository_format_gently(get_git_dir(), NULL);
}
/*
const char *retval = setup_git_directory_gently(NULL);
/* If the work tree is not the default one, recompute prefix */
- if (inside_work_tree < 0) {
+ if ((!startup_info || startup_info->setup_explicit) &&
+ inside_work_tree < 0) {
static char buffer[PATH_MAX + 1];
char *rel;
if (retval && chdir(retval))