read-cache: let refresh_cache_ent pass up changed flags

This will enable refresh_cache to differentiate more cases
of modification (such as typechange) when telling the user
what isn't fresh.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/read-cache.c b/read-cache.c
index 5790a91..8e69ea3 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -1001,7 +1001,8 @@ int add_index_entry(struct index_state *istate, struct cache_entry *ce, int opti
  */
 static struct cache_entry *refresh_cache_ent(struct index_state *istate,
                                             struct cache_entry *ce,
-                                            unsigned int options, int *err)
+                                            unsigned int options, int *err,
+                                            int *changed_ret)
 {
        struct stat st;
        struct cache_entry *updated;
@@ -1033,6 +1034,8 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
        }
 
        changed = ie_match_stat(istate, ce, &st, options);
+       if (changed_ret)
+               *changed_ret = changed;
        if (!changed) {
                /*
                 * The path is unchanged.  If we were told to ignore
@@ -1130,7 +1133,7 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
                if (pathspec && !match_pathspec(pathspec, ce->name, strlen(ce->name), 0, seen))
                        continue;
 
-               new = refresh_cache_ent(istate, ce, options, &cache_errno);
+               new = refresh_cache_ent(istate, ce, options, &cache_errno, NULL);
                if (new == ce)
                        continue;
                if (!new) {
@@ -1157,7 +1160,7 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
 
 static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
 {
-       return refresh_cache_ent(&the_index, ce, really, NULL);
+       return refresh_cache_ent(&the_index, ce, really, NULL, NULL);
 }
 
 static int verify_hdr(struct cache_header *hdr, unsigned long size)