untracked-cache: temporarily disable with $GIT_DISABLE_UNTRACKED_CACHE

diff --git a/read-cache.c b/read-cache.c
index 3a058d008abce8894335b8c442f38b17d56f30a1..705469eb7a90f3168acec47740d6b8b6b2661864 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -44,7 +44,7 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce,
 /* changes that can be kept in $GIT_DIR/index (basically all extensions) */
 #define EXTMASK (RESOLVE_UNDO_CHANGED | CACHE_TREE_CHANGED | \
                 CE_ENTRY_ADDED | CE_ENTRY_REMOVED | CE_ENTRY_CHANGED | \
-                SPLIT_INDEX_ORDERED)
+                SPLIT_INDEX_ORDERED | UNTRACKED_CHANGED)
 
 struct index_state the_index;
 static const char *alternate_index_output;
@@ -80,6 +80,7 @@ void rename_index_entry_at(struct index_state *istate, int nr, const char *new_n
        memcpy(new->name, new_name, namelen + 1);
 
        cache_tree_invalidate_path(istate, old->name);
+       untracked_cache_remove_from_index(istate, old->name);
        remove_index_entry_at(istate, nr);
        add_index_entry(istate, new, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
 }
@@ -271,20 +272,34 @@ static int ce_match_stat_basic(const struct cache_entry *ce, struct stat *st)
        return changed;
 }
 
-static int is_racy_timestamp(const struct index_state *istate,
-                            const struct cache_entry *ce)
+static int is_racy_stat(const struct index_state *istate,
+                       const struct stat_data *sd)
 {
-       return (!S_ISGITLINK(ce->ce_mode) &&
-               istate->timestamp.sec &&
+       return (istate->timestamp.sec &&
 #ifdef USE_NSEC
                 /* nanosecond timestamped files can also be racy! */
-               (istate->timestamp.sec < ce->ce_stat_data.sd_mtime.sec ||
-                (istate->timestamp.sec == ce->ce_stat_data.sd_mtime.sec &&
-                 istate->timestamp.nsec <= ce->ce_stat_data.sd_mtime.nsec))
+               (istate->timestamp.sec < sd->sd_mtime.sec ||
+                (istate->timestamp.sec == sd->sd_mtime.sec &&
+                 istate->timestamp.nsec <= sd->sd_mtime.nsec))
 #else
-               istate->timestamp.sec <= ce->ce_stat_data.sd_mtime.sec
+               istate->timestamp.sec <= sd->sd_mtime.sec
 #endif
-                );
+               );
+}
+
+static int is_racy_timestamp(const struct index_state *istate,
+                            const struct cache_entry *ce)
+{
+       return (!S_ISGITLINK(ce->ce_mode) &&
+               is_racy_stat(istate, &ce->ce_stat_data));
+}
+
+int match_stat_data_racy(const struct index_state *istate,
+                        const struct stat_data *sd, struct stat *st)
+{
+       if (is_racy_stat(istate, sd))
+               return MTIME_CHANGED;
+       return match_stat_data(sd, st);
 }
 
 int ie_match_stat(const struct index_state *istate,
@@ -539,6 +554,7 @@ int remove_file_from_index(struct index_state *istate, const char *path)
        if (pos < 0)
                pos = -pos-1;
        cache_tree_invalidate_path(istate, path);
+       untracked_cache_remove_from_index(istate, path);
        while (pos < istate->cache_nr && !strcmp(istate->cache[pos]->name, path))
                remove_index_entry_at(istate, pos);
        return 0;
@@ -981,6 +997,8 @@ static int add_index_entry_with_check(struct index_state *istate, struct cache_e
        }
        pos = -pos-1;
 
+       untracked_cache_add_to_index(istate, ce->name);
+
        /*
         * Inserting a merged entry ("stage 0") into the index
         * will always replace all non-merged entries..
@@ -1371,6 +1389,9 @@ static int read_index_extension(struct index_state *istate,
                if (read_link_extension(istate, data, sz))
                        return -1;
                break;
+       case CACHE_EXT_UNTRACKED:
+               istate->untracked = read_untracked_extension(data, sz);
+               break;
        default:
                if (*ext < 'A' || 'Z' < *ext)
                        return error("index uses %.4s extension, which we do not understand",
@@ -1662,6 +1683,8 @@ int discard_index(struct index_state *istate)
        istate->cache = NULL;
        istate->cache_alloc = 0;
        discard_split_index(istate);
+       free_untracked_cache(istate->untracked);
+       istate->untracked = NULL;
        return 0;
 }