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index 3d25d0f205ba7ad555a7f26e40be7590ac16d926..a3b76de2bb1c18e2f3b8cdf5799c3c650b16d027 100644 (file)
--- a/setup.c
+++ b/setup.c
return is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT);
}
+static const char *setup_discovered_git_dir(const char *work_tree_env,
+ int offset, int len, char *cwd, int *nongit_ok)
+{
+ int root_len;
+
+ 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;
+
+ /* Make "offset" point to past the '/', and add a '/' at the end */
+ offset++;
+ cwd[len++] = '/';
+ cwd[len] = 0;
+ return cwd + offset;
+}
+
+static const char *setup_bare_git_dir(const char *work_tree_env,
+ int offset, int len, char *cwd, int *nongit_ok)
+{
+ int root_len;
+
+ inside_git_dir = 1;
+ if (!work_tree_env)
+ 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(".");
+ check_repository_format_gently(nongit_ok);
+ 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;
+ 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.
*/
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 (;;) {
if (cwd_contains_git_dir(&gitfile_dir))
- 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;
- }
+ return setup_discovered_git_dir(work_tree_env, offset,
+ len, cwd, nongit_ok);
+ if (is_git_directory("."))
+ return setup_bare_git_dir(work_tree_env, offset,
+ len, cwd, 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)