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authorJunio C Hamano <gitster@pobox.com>2023-09-15 00:46:46 +0300
committerJunio C Hamano <gitster@pobox.com>2023-09-16 03:08:46 +0300
commitc33fa871a5c89091cfc89fd7b6ef504d2d48bef2 (patch)
treed8eefcf40275cd2453b3ec5a34685f28627dd095 /read-cache-ll.h
parent43c8a30d150ecede9709c1f2527c8fba92c65f40 (diff)
cache: add fake_lstat()
At times, we may already know that a path represented by a cache_entry ce has no changes via some out-of-line means, like fsmonitor, and yet need the control to go through a codepath that requires us to have "struct stat" obtained by lstat() on the path, for various purposes (e.g. "ie_match_stat()" wants cached stat-info is still current wrt "struct stat", "diff" wants to know st_mode). The callers of lstat() on a tracked file, when its cache_entry knows it is up-to-date, can instead call this helper to pretend that it called lstat() by faking the "struct stat" information. Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'read-cache-ll.h')
-rw-r--r--read-cache-ll.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/read-cache-ll.h b/read-cache-ll.h
index 9a1a7edc5a..2a50a784f0 100644
--- a/read-cache-ll.h
+++ b/read-cache-ll.h
@@ -436,6 +436,14 @@ int match_stat_data_racy(const struct index_state *istate,
void fill_stat_cache_info(struct index_state *istate, struct cache_entry *ce, struct stat *st);
+/*
+ * Fill members of st by members of sd enough to convince match_stat()
+ * to consider that they match. It should be usable as a replacement
+ * for lstat() for a tracked path that is known to be up-to-date via
+ * some out-of-line means (like fsmonitor).
+ */
+int fake_lstat(const struct cache_entry *ce, struct stat *st);
+
#define REFRESH_REALLY (1 << 0) /* ignore_valid */
#define REFRESH_UNMERGED (1 << 1) /* allow unmerged */
#define REFRESH_QUIET (1 << 2) /* be quiet about it */