packfile: refactor hash search with fanout table

diff --git a/sequencer.c b/sequencer.c
index 332a383b037d2a24627a2c833aae163dc05665f8..5e09b5d34fbcb0516ffdaf6a841a6a8ff47f4ea5 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -438,7 +438,8 @@ static int do_recursive_merge(struct commit *base, struct commit *next,
        char **xopt;
        static struct lock_file index_lock;
 
-       hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
+       if (hold_locked_index(&index_lock, LOCK_REPORT_ON_ERROR) < 0)
+               return -1;
 
        read_cache();
 
@@ -2670,6 +2671,19 @@ int check_todo_list(void)
        return res;
 }
 
+static int rewrite_file(const char *path, const char *buf, size_t len)
+{
+       int rc = 0;
+       int fd = open(path, O_WRONLY | O_TRUNC);
+       if (fd < 0)
+               return error_errno(_("could not open '%s' for writing"), path);
+       if (write_in_full(fd, buf, len) < 0)
+               rc = error_errno(_("could not write to '%s'"), path);
+       if (close(fd) && !rc)
+               rc = error_errno(_("could not close '%s'"), path);
+       return rc;
+}
+
 /* skip picking commits whose parents are unchanged */
 int skip_unnecessary_picks(void)
 {
@@ -2742,29 +2756,11 @@ int skip_unnecessary_picks(void)
                }
                close(fd);
 
-               fd = open(rebase_path_todo(), O_WRONLY, 0666);
-               if (fd < 0) {
-                       error_errno(_("could not open '%s' for writing"),
-                                   rebase_path_todo());
+               if (rewrite_file(rebase_path_todo(), todo_list.buf.buf + offset,
+                                todo_list.buf.len - offset) < 0) {
                        todo_list_release(&todo_list);
                        return -1;
                }
-               if (write_in_full(fd, todo_list.buf.buf + offset,
-                               todo_list.buf.len - offset) < 0) {
-                       error_errno(_("could not write to '%s'"),
-                                   rebase_path_todo());
-                       close(fd);
-                       todo_list_release(&todo_list);
-                       return -1;
-               }
-               if (ftruncate(fd, todo_list.buf.len - offset) < 0) {
-                       error_errno(_("could not truncate '%s'"),
-                                   rebase_path_todo());
-                       todo_list_release(&todo_list);
-                       close(fd);
-                       return -1;
-               }
-               close(fd);
 
                todo_list.current = i;
                if (is_fixup(peek_command(&todo_list, 0)))
@@ -2949,15 +2945,7 @@ int rearrange_squash(void)
                        }
                }
 
-               fd = open(todo_file, O_WRONLY);
-               if (fd < 0)
-                       res = error_errno(_("could not open '%s'"), todo_file);
-               else if (write(fd, buf.buf, buf.len) < 0)
-                       res = error_errno(_("could not write to '%s'"), todo_file);
-               else if (ftruncate(fd, buf.len) < 0)
-                       res = error_errno(_("could not truncate '%s'"),
-                                          todo_file);
-               close(fd);
+               res = rewrite_file(todo_file, buf.buf, buf.len);
                strbuf_release(&buf);
        }