[RFC GSoC PATCH] environment: move core.trustctime to repo_settings

[Ayush Jha <kumarayushjha123@gmail.com>]

The core.trustctime configuration variable is currently stored as a global in environment.c. This prevents it from being repository-specific, which is problematic when multiple repository instances are used within the same process.

This change continues the effort to move global configuration into struct repo_settings, as discussed in
<20260208062949.596-1-kumarayushjha123@gmail.com>.

Move trust_ctime into struct repo_settings so that it is associated with a repository instance.

Add repo_settings_get_trust_ctime() to lazily read the
core.trustctime configuration value, defaulting to true.

Update statinfo.c to use the new accessor instead of the global variable.

Signed-off-by: Ayush Jha <kumarayushjha123@gmail.com>
---
 environment.c   | 5 -----
 environment.h   | 1 -
 repo-settings.c | 7 +++++++
 repo-settings.h | 8 ++++++++
 statinfo.c      | 4 ++--
 5 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/environment.c b/environment.c
index 8ffbf92d50..95bd0db63c 100644
--- a/environment.c
+++ b/environment.c
@@ -41,7 +41,6 @@ static int pack_compression_seen;
 static int zlib_compression_seen;
 
 int trust_executable_bit = 1;
-int trust_ctime = 1;
 int check_stat = 1;
 int has_symlinks = 1;
 int minimum_abbrev = 4, default_abbrev = -1;
@@ -308,10 +307,6 @@ int git_default_core_config(const char *var, const char *value,
 		trust_executable_bit = git_config_bool(var, value);
 		return 0;
 	}
-	if (!strcmp(var, "core.trustctime")) {
-		trust_ctime = git_config_bool(var, value);
-		return 0;
-	}
 	if (!strcmp(var, "core.checkstat")) {
 		if (!value)
 			return config_error_nonbool(var);
diff --git a/environment.h b/environment.h
index 27f657af04..148103ea51 100644
--- a/environment.h
+++ b/environment.h
@@ -145,7 +145,6 @@ extern char *git_work_tree_cfg;
 
 /* Environment bits from configuration mechanism */
 extern int trust_executable_bit;
-extern int trust_ctime;
 extern int check_stat;
 extern int has_symlinks;
 extern int minimum_abbrev, default_abbrev;
diff --git a/repo-settings.c b/repo-settings.c
index 208e09ff17..bb7d983023 100644
--- a/repo-settings.c
+++ b/repo-settings.c
@@ -233,3 +233,10 @@ void repo_settings_reset_shared_repository(struct repository *repo)
 {
 	repo->settings.shared_repository_initialized = 0;
 }
+
+int repo_settings_get_trust_ctime(struct repository *repo)
+{
+	if (repo->settings.trust_ctime < 0)
+		repo_cfg_bool(repo, "core.trustctime", &repo->settings.trust_ctime, 1);
+	return repo->settings.trust_ctime;
+}
diff --git a/repo-settings.h b/repo-settings.h
index cad9c3f0cc..709f86108b 100644
--- a/repo-settings.h
+++ b/repo-settings.h
@@ -70,6 +70,8 @@ struct repo_settings {
 	int max_allowed_tree_depth;
 
 	char *hooks_path;
+
+	int trust_ctime;
 };
 #define REPO_SETTINGS_INIT { \
 	.shared_repository = -1, \
@@ -81,6 +83,7 @@ struct repo_settings {
 	.packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE, \
 	.packed_git_limit = DEFAULT_PACKED_GIT_LIMIT, \
 	.max_allowed_tree_depth = DEFAULT_MAX_ALLOWED_TREE_DEPTH, \
+	.trust_ctime = -1, \
 }
 
 void prepare_repo_settings(struct repository *r);
@@ -90,6 +93,11 @@ void repo_settings_clear(struct repository *r);
 enum log_refs_config repo_settings_get_log_all_ref_updates(struct repository *repo);
 /* Read the value for "core.warnAmbiguousRefs". */
 int repo_settings_get_warn_ambiguous_refs(struct repository *repo);
+/* Read and set the value for "core.attributesfile". */
+const char *repo_settings_get_attributes_file(struct repository *repo);
+
+/* Read the value for "core.trustctime". */
+int repo_settings_get_trust_ctime(struct repository *repo);
 /* Read the value for "core.hooksPath". */
 const char *repo_settings_get_hooks_path(struct repository *repo);
 
diff --git a/statinfo.c b/statinfo.c
index 30a164b0e6..ebc8faef27 100644
--- a/statinfo.c
+++ b/statinfo.c
@@ -66,14 +66,14 @@ int match_stat_data(const struct stat_data *sd, struct stat *st)
 
 	if (sd->sd_mtime.sec != (unsigned int)st->st_mtime)
 		changed |= MTIME_CHANGED;
-	if (trust_ctime && check_stat &&
+	if (repo_settings_get_trust_ctime(the_repository) && check_stat &&
 	    sd->sd_ctime.sec != (unsigned int)st->st_ctime)
 		changed |= CTIME_CHANGED;
 
 #ifdef USE_NSEC
 	if (check_stat && sd->sd_mtime.nsec != ST_MTIME_NSEC(*st))
 		changed |= MTIME_CHANGED;
-	if (trust_ctime && check_stat &&
+	if (repo_settings_get_trust_ctime(the_repository) && check_stat &&
 	    sd->sd_ctime.nsec != ST_CTIME_NSEC(*st))
 		changed |= CTIME_CHANGED;
 #endif
-- 
2.53.0.windows.1