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-rw-r--r--setup.c96
1 files changed, 80 insertions, 16 deletions
diff --git a/setup.c b/setup.c
index 3a81307602..78e7ae1be7 100644
--- a/setup.c
+++ b/setup.c
@@ -447,6 +447,54 @@ static int read_worktree_config(const char *var, const char *value, void *vdata)
return 0;
}
+enum extension_result {
+ EXTENSION_ERROR = -1, /* compatible with error(), etc */
+ EXTENSION_UNKNOWN = 0,
+ EXTENSION_OK = 1
+};
+
+/*
+ * Do not add new extensions to this function. It handles extensions which are
+ * respected even in v0-format repositories for historical compatibility.
+ */
+static enum extension_result handle_extension_v0(const char *var,
+ const char *value,
+ const char *ext,
+ struct repository_format *data)
+{
+ if (!strcmp(ext, "noop")) {
+ return EXTENSION_OK;
+ } else if (!strcmp(ext, "preciousobjects")) {
+ data->precious_objects = git_config_bool(var, value);
+ return EXTENSION_OK;
+ } else if (!strcmp(ext, "partialclone")) {
+ if (!value)
+ return config_error_nonbool(var);
+ data->partial_clone = xstrdup(value);
+ return EXTENSION_OK;
+ } else if (!strcmp(ext, "worktreeconfig")) {
+ data->worktree_config = git_config_bool(var, value);
+ return EXTENSION_OK;
+ }
+
+ return EXTENSION_UNKNOWN;
+}
+
+/*
+ * Record any new extensions in this function.
+ */
+static enum extension_result handle_extension(const char *var,
+ const char *value,
+ const char *ext,
+ struct repository_format *data)
+{
+ if (!strcmp(ext, "noop-v1")) {
+ return EXTENSION_OK;
+ }
+
+ return EXTENSION_UNKNOWN;
+}
+
static int check_repo_format(const char *var, const char *value, void *vdata)
{
struct repository_format *data = vdata;
@@ -455,23 +503,25 @@ static int check_repo_format(const char *var, const char *value, void *vdata)
if (strcmp(var, "core.repositoryformatversion") == 0)
data->version = git_config_int(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 if (!strcmp(ext, "preciousobjects"))
- data->precious_objects = git_config_bool(var, value);
- else if (!strcmp(ext, "partialclone")) {
- if (!value)
- return config_error_nonbool(var);
- data->partial_clone = xstrdup(value);
- } else if (!strcmp(ext, "worktreeconfig"))
- data->worktree_config = git_config_bool(var, value);
- else
+ switch (handle_extension_v0(var, value, ext, data)) {
+ case EXTENSION_ERROR:
+ return -1;
+ case EXTENSION_OK:
+ return 0;
+ case EXTENSION_UNKNOWN:
+ break;
+ }
+
+ switch (handle_extension(var, value, ext, data)) {
+ case EXTENSION_ERROR:
+ return -1;
+ case EXTENSION_OK:
+ string_list_append(&data->v1_only_extensions, ext);
+ return 0;
+ case EXTENSION_UNKNOWN:
string_list_append(&data->unknown_extensions, ext);
+ return 0;
+ }
}
return read_worktree_config(var, value, vdata);
@@ -510,6 +560,7 @@ static int check_repository_format_gently(const char *gitdir, struct repository_
set_repository_format_partial_clone(candidate->partial_clone);
repository_format_worktree_config = candidate->worktree_config;
string_list_clear(&candidate->unknown_extensions, 0);
+ string_list_clear(&candidate->v1_only_extensions, 0);
if (repository_format_worktree_config) {
/*
@@ -588,6 +639,7 @@ int read_repository_format(struct repository_format *format, const char *path)
void clear_repository_format(struct repository_format *format)
{
string_list_clear(&format->unknown_extensions, 0);
+ string_list_clear(&format->v1_only_extensions, 0);
free(format->work_tree);
free(format->partial_clone);
init_repository_format(format);
@@ -613,6 +665,18 @@ int verify_repository_format(const struct repository_format *format,
return -1;
}
+ if (format->version == 0 && format->v1_only_extensions.nr) {
+ int i;
+
+ strbuf_addstr(err,
+ _("repo version is 0, but v1-only extensions found:"));
+
+ for (i = 0; i < format->v1_only_extensions.nr; i++)
+ strbuf_addf(err, "\n\t%s",
+ format->v1_only_extensions.items[i].string);
+ return -1;
+ }
+
return 0;
}