Teach tree_entry_interesting() that the tree entries are sorted.

diff --git a/builtin-update-index.c b/builtin-update-index.c
index 1ac613a78869e5b0a2ac45ca6ab72adc18a55575..71cef633c0e36b3a33fa29eccb8579a9304b0777 100644 (file)
--- a/builtin-update-index.c
+++ b/builtin-update-index.c
@@ -109,16 +109,17 @@ static int add_file_to_cache(const char *path)
        ce->ce_flags = htons(namelen);
        fill_stat_cache_info(ce, &st);
 
-       ce->ce_mode = create_ce_mode(st.st_mode);
-       if (!trust_executable_bit) {
-               /* If there is an existing entry, pick the mode bits
-                * from it, otherwise assume unexecutable.
+       if (trust_executable_bit && has_symlinks)
+               ce->ce_mode = create_ce_mode(st.st_mode);
+       else {
+               /* If there is an existing entry, pick the mode bits and type
+                * from it, otherwise assume unexecutable regular file.
                 */
+               struct cache_entry *ent;
                int pos = cache_name_pos(path, namelen);
-               if (0 <= pos)
-                       ce->ce_mode = active_cache[pos]->ce_mode;
-               else if (S_ISREG(st.st_mode))
-                       ce->ce_mode = create_ce_mode(S_IFREG | 0666);
+
+               ent = (0 <= pos) ? active_cache[pos] : NULL;
+               ce->ce_mode = ce_mode_from_stat(ent, st.st_mode);
        }
 
        if (index_path(ce->sha1, path, &st, !info_only))
@@ -486,6 +487,7 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
        int prefix_length = prefix ? strlen(prefix) : 0;
        char set_executable_bit = 0;
        unsigned int refresh_flags = 0;
+       int lock_error = 0;
        struct lock_file *lock_file;
 
        git_config(git_default_config);
@@ -493,7 +495,9 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
        /* We can't free this memory, it becomes part of a linked list parsed atexit() */
        lock_file = xcalloc(1, sizeof(struct lock_file));
 
-       newfd = hold_lock_file_for_update(lock_file, get_index_file(), 1);
+       newfd = hold_lock_file_for_update(lock_file, get_index_file(), 0);
+       if (newfd < 0)
+               lock_error = errno;
 
        entries = read_cache();
        if (entries < 0)
@@ -650,6 +654,12 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
 
  finish:
        if (active_cache_changed) {
+               if (newfd < 0) {
+                       if (refresh_flags & REFRESH_QUIET)
+                               exit(128);
+                       die("unable to create '%s.lock': %s",
+                           get_index_file(), strerror(lock_error));
+               }
                if (write_cache(newfd, active_cache, active_nr) ||
                    close(newfd) || commit_lock_file(lock_file))
                        die("Unable to write new index file");