Merge branch 'jc/gitlink' into next

[git.git] / read-tree.c

diff --git a/read-tree.c b/read-tree.c
index 5d304641067779b2c630a616279937378fe60c2c..675a59f8070b6ca5ce1789b823d85e881939c778 100644 (file)
--- a/read-tree.c
+++ b/read-tree.c
@@ -13,6 +13,7 @@
 #include <sys/time.h>
 #include <signal.h>
 
+static int reset = 0;
 static int merge = 0;
 static int update = 0;
 static int index_only = 0;
@@ -419,6 +420,10 @@ static void verify_uptodate(struct cache_entry *ce)
                        return;
                errno = 0;
        }
+       if (reset) {
+               ce->ce_flags |= htons(CE_UPDATE);
+               return;
+       }
        if (errno == ENOENT)
                return;
        die("Entry '%s' not uptodate. Cannot merge.", ce->name);
@@ -685,7 +690,7 @@ static int twoway_merge(struct cache_entry **src)
  * Bind merge.
  *
  * Keep the index entries at stage0, collapse stage1 but make sure
- * stage0 does not have anything in prefix.
+ * stage0 does not have anything there.
  */
 static int bind_merge(struct cache_entry **src)
 {
@@ -695,12 +700,12 @@ static int bind_merge(struct cache_entry **src)
        if (merge_size != 1)
                return error("Cannot do a bind merge of %d trees\n",
                             merge_size);
-       if (!a)
-               return merged_entry(old, NULL);
-       if (old)
+       if (a && old)
                die("Entry '%s' overlaps.  Cannot bind.", a->name);
-
-       return merged_entry(a, NULL);
+       if (!a)
+               return keep_entry(old);
+       else
+               return merged_entry(a, NULL);
 }
 
 /*
@@ -720,9 +725,15 @@ static int oneway_merge(struct cache_entry **src)
 
        if (!a) {
                invalidate_ce_path(old);
-               return 0;
+               return deleted_entry(old, NULL);
        }
        if (old && same(old, a)) {
+               if (reset) {
+                       struct stat st;
+                       if (lstat(old->name, &st) ||
+                           ce_match_stat(old, &st, 1))
+                               old->ce_flags |= htons(CE_UPDATE);
+               }
                return keep_entry(old);
        }
        return merged_entry(a, NULL);
@@ -790,7 +801,7 @@ static struct cache_file cache_file;
 
 int main(int argc, char **argv)
 {
-       int i, newfd, reset, stage = 0;
+       int i, newfd, stage = 0;
        unsigned char sha1[20];
        merge_fn_t fn = NULL;
 
@@ -880,8 +891,8 @@ int main(int argc, char **argv)
                if (1 < index_only + update)
                        usage(read_tree_usage);
 
-               if (get_sha1(arg, sha1) < 0)
-                       usage(read_tree_usage);
+               if (get_sha1(arg, sha1))
+                       die("Not a valid object name %s", arg);
                if (list_tree(sha1) < 0)
                        die("failed to unpack tree object %s", arg);
                stage++;