update-index: be specific what part of the index has changed

diff --git a/lockfile.c b/lockfile.c
index c6fb77b26fd88f4edf85a8920a6d72e49551deed..b7066143494bcfa3e629dd718daf8959af6c4b86 100644 (file)
--- a/lockfile.c
+++ b/lockfile.c
@@ -5,7 +5,6 @@
 #include "sigchain.h"
 
 static struct lock_file *lock_file_list;
-static const char *alternate_index_output;
 
 static void remove_lock_file(void)
 {
@@ -124,15 +123,17 @@ static char *resolve_symlink(char *p, size_t s)
 
 static int lock_file(struct lock_file *lk, const char *path, int flags)
 {
-       if (strlen(path) >= sizeof(lk->filename))
-               return -1;
-       strcpy(lk->filename, path);
        /*
         * subtract 5 from size to make sure there's room for adding
         * ".lock" for the lock file name
         */
+       static const size_t max_path_len = sizeof(lk->filename) - 5;
+
+       if (strlen(path) >= max_path_len)
+               return -1;
+       strcpy(lk->filename, path);
        if (!(flags & LOCK_NODEREF))
-               resolve_symlink(lk->filename, sizeof(lk->filename)-5);
+               resolve_symlink(lk->filename, max_path_len);
        strcat(lk->filename, ".lock");
        lk->fd = open(lk->filename, O_RDWR | O_CREAT | O_EXCL, 0666);
        if (0 <= lk->fd) {
@@ -250,25 +251,6 @@ int hold_locked_index(struct lock_file *lk, int die_on_error)
                                         : 0);
 }
 
-void set_alternate_index_output(const char *name)
-{
-       alternate_index_output = name;
-}
-
-int commit_locked_index(struct lock_file *lk)
-{
-       if (alternate_index_output) {
-               if (lk->fd >= 0 && close_lock_file(lk))
-                       return -1;
-               if (rename(lk->filename, alternate_index_output))
-                       return -1;
-               lk->filename[0] = 0;
-               return 0;
-       }
-       else
-               return commit_lock_file(lk);
-}
-
 void rollback_lock_file(struct lock_file *lk)
 {
        if (lk->filename[0]) {