diff-lib: allow ita entries treated as "not yet exist in index"
[gitweb.git] / sequencer.c
index 1614efb8db66346c61cb4f59f932e33dc1af0707..eec8a60d6bdf22d429c14ad07288f823d9bac7b5 100644 (file)
@@ -226,7 +226,7 @@ static int fast_forward_to(const unsigned char *to, const unsigned char *from,
 
        read_cache();
        if (checkout_fast_forward(from, to, 1))
-               exit(128); /* the callee should have complained already */
+               return -1; /* the callee should have complained already */
 
        strbuf_addf(&sb, _("%s: fast-forward"), action_name(opts));
 
@@ -644,14 +644,18 @@ static int read_and_refresh_cache(struct replay_opts *opts)
 {
        static struct lock_file index_lock;
        int index_fd = hold_locked_index(&index_lock, 0);
-       if (read_index_preload(&the_index, NULL) < 0)
+       if (read_index_preload(&the_index, NULL) < 0) {
+               rollback_lock_file(&index_lock);
                return error(_("git %s: failed to read the index"),
                        action_name(opts));
+       }
        refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL);
        if (the_index.cache_changed && index_fd >= 0) {
-               if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK))
+               if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) {
+                       rollback_lock_file(&index_lock);
                        return error(_("git %s: failed to refresh the index"),
                                action_name(opts));
+               }
        }
        rollback_lock_file(&index_lock);
        return 0;
@@ -847,23 +851,33 @@ static int create_seq_dir(void)
                return -1;
        }
        else if (mkdir(git_path_seq_dir(), 0777) < 0)
-               die_errno(_("Could not create sequencer directory %s"),
-                         git_path_seq_dir());
+               return error_errno(_("Could not create sequencer directory %s"),
+                                  git_path_seq_dir());
        return 0;
 }
 
-static void save_head(const char *head)
+static int save_head(const char *head)
 {
        static struct lock_file head_lock;
        struct strbuf buf = STRBUF_INIT;
        int fd;
 
-       fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), LOCK_DIE_ON_ERROR);
+       fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), 0);
+       if (fd < 0) {
+               rollback_lock_file(&head_lock);
+               return error_errno(_("Could not lock HEAD"));
+       }
        strbuf_addf(&buf, "%s\n", head);
-       if (write_in_full(fd, buf.buf, buf.len) < 0)
-               die_errno(_("Could not write to %s"), git_path_head_file());
-       if (commit_lock_file(&head_lock) < 0)
-               die(_("Error wrapping up %s."), git_path_head_file());
+       if (write_in_full(fd, buf.buf, buf.len) < 0) {
+               rollback_lock_file(&head_lock);
+               return error_errno(_("Could not write to %s"),
+                                  git_path_head_file());
+       }
+       if (commit_lock_file(&head_lock) < 0) {
+               rollback_lock_file(&head_lock);
+               return error(_("Error wrapping up %s."), git_path_head_file());
+       }
+       return 0;
 }
 
 static int reset_for_rollback(const unsigned char *sha1)
@@ -933,57 +947,66 @@ static int sequencer_rollback(struct replay_opts *opts)
        return -1;
 }
 
-static void save_todo(struct commit_list *todo_list, struct replay_opts *opts)
+static int save_todo(struct commit_list *todo_list, struct replay_opts *opts)
 {
        static struct lock_file todo_lock;
        struct strbuf buf = STRBUF_INIT;
        int fd;
 
-       fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), LOCK_DIE_ON_ERROR);
-       if (format_todo(&buf, todo_list, opts) < 0)
-               die(_("Could not format %s."), git_path_todo_file());
+       fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), 0);
+       if (fd < 0)
+               return error_errno(_("Could not lock '%s'"),
+                                  git_path_todo_file());
+       if (format_todo(&buf, todo_list, opts) < 0) {
+               strbuf_release(&buf);
+               return error(_("Could not format %s."), git_path_todo_file());
+       }
        if (write_in_full(fd, buf.buf, buf.len) < 0) {
                strbuf_release(&buf);
-               die_errno(_("Could not write to %s"), git_path_todo_file());
+               return error_errno(_("Could not write to %s"),
+                                  git_path_todo_file());
        }
        if (commit_lock_file(&todo_lock) < 0) {
                strbuf_release(&buf);
-               die(_("Error wrapping up %s."), git_path_todo_file());
+               return error(_("Error wrapping up %s."), git_path_todo_file());
        }
        strbuf_release(&buf);
+       return 0;
 }
 
-static void save_opts(struct replay_opts *opts)
+static int save_opts(struct replay_opts *opts)
 {
        const char *opts_file = git_path_opts_file();
+       int res = 0;
 
        if (opts->no_commit)
-               git_config_set_in_file(opts_file, "options.no-commit", "true");
+               res |= git_config_set_in_file_gently(opts_file, "options.no-commit", "true");
        if (opts->edit)
-               git_config_set_in_file(opts_file, "options.edit", "true");
+               res |= git_config_set_in_file_gently(opts_file, "options.edit", "true");
        if (opts->signoff)
-               git_config_set_in_file(opts_file, "options.signoff", "true");
+               res |= git_config_set_in_file_gently(opts_file, "options.signoff", "true");
        if (opts->record_origin)
-               git_config_set_in_file(opts_file, "options.record-origin", "true");
+               res |= git_config_set_in_file_gently(opts_file, "options.record-origin", "true");
        if (opts->allow_ff)
-               git_config_set_in_file(opts_file, "options.allow-ff", "true");
+               res |= git_config_set_in_file_gently(opts_file, "options.allow-ff", "true");
        if (opts->mainline) {
                struct strbuf buf = STRBUF_INIT;
                strbuf_addf(&buf, "%d", opts->mainline);
-               git_config_set_in_file(opts_file, "options.mainline", buf.buf);
+               res |= git_config_set_in_file_gently(opts_file, "options.mainline", buf.buf);
                strbuf_release(&buf);
        }
        if (opts->strategy)
-               git_config_set_in_file(opts_file, "options.strategy", opts->strategy);
+               res |= git_config_set_in_file_gently(opts_file, "options.strategy", opts->strategy);
        if (opts->gpg_sign)
-               git_config_set_in_file(opts_file, "options.gpg-sign", opts->gpg_sign);
+               res |= git_config_set_in_file_gently(opts_file, "options.gpg-sign", opts->gpg_sign);
        if (opts->xopts) {
                int i;
                for (i = 0; i < opts->xopts_nr; i++)
-                       git_config_set_multivar_in_file(opts_file,
+                       res |= git_config_set_multivar_in_file_gently(opts_file,
                                                        "options.strategy-option",
                                                        opts->xopts[i], "^$", 0);
        }
+       return res;
 }
 
 static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
@@ -999,7 +1022,8 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
                return -1;
 
        for (cur = todo_list; cur; cur = cur->next) {
-               save_todo(cur, opts);
+               if (save_todo(cur, opts))
+                       return -1;
                res = do_pick_commit(cur->item, opts);
                if (res)
                        return res;
@@ -1127,8 +1151,10 @@ int sequencer_pick_revisions(struct replay_opts *opts)
                return -1;
        if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT))
                return error(_("Can't revert as initial commit"));
-       save_head(sha1_to_hex(sha1));
-       save_opts(opts);
+       if (save_head(sha1_to_hex(sha1)))
+               return -1;
+       if (save_opts(opts))
+               return -1;
        return pick_commits(todo_list, opts);
 }