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-rw-r--r--sequencer.c237
1 files changed, 149 insertions, 88 deletions
diff --git a/sequencer.c b/sequencer.c
index e66f2fe0f0..eec8a60d6b 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -112,7 +112,7 @@ static void remove_sequencer_state(void)
{
struct strbuf seq_dir = STRBUF_INIT;
- strbuf_addf(&seq_dir, "%s", git_path(SEQ_DIR));
+ strbuf_addstr(&seq_dir, git_path(SEQ_DIR));
remove_dir_recursively(&seq_dir, 0);
strbuf_release(&seq_dir);
}
@@ -180,17 +180,20 @@ static void print_advice(int show_hint, struct replay_opts *opts)
}
}
-static void write_message(struct strbuf *msgbuf, const char *filename)
+static int write_message(struct strbuf *msgbuf, const char *filename)
{
static struct lock_file msg_file;
- int msg_fd = hold_lock_file_for_update(&msg_file, filename,
- LOCK_DIE_ON_ERROR);
+ int msg_fd = hold_lock_file_for_update(&msg_file, filename, 0);
+ if (msg_fd < 0)
+ return error_errno(_("Could not lock '%s'"), filename);
if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0)
- die_errno(_("Could not write to %s"), filename);
+ return error_errno(_("Could not write to %s"), filename);
strbuf_release(msgbuf);
if (commit_lock_file(&msg_file) < 0)
- die(_("Error wrapping up %s"), filename);
+ return error(_("Error wrapping up %s."), filename);
+
+ return 0;
}
static struct tree *empty_tree(void)
@@ -223,9 +226,9 @@ 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));
+ strbuf_addf(&sb, _("%s: fast-forward"), action_name(opts));
transaction = ref_transaction_begin(&err);
if (!transaction ||
@@ -293,11 +296,15 @@ static int do_recursive_merge(struct commit *base, struct commit *next,
clean = merge_trees(&o,
head_tree,
next_tree, base_tree, &result);
+ strbuf_release(&o.obuf);
+ if (clean < 0)
+ return clean;
if (active_cache_changed &&
write_locked_index(&the_index, &index_lock, COMMIT_LOCK))
/* TRANSLATORS: %s will be "revert" or "cherry-pick" */
- die(_("%s: Unable to write new index file"), action_name(opts));
+ return error(_("%s: Unable to write new index file"),
+ action_name(opts));
rollback_lock_file(&index_lock);
if (opts->signoff)
@@ -457,7 +464,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
* to work on.
*/
if (write_cache_as_tree(head, 0, NULL))
- die (_("Your index file is unmerged."));
+ return error(_("Your index file is unmerged."));
} else {
unborn = get_sha1("HEAD", head);
if (unborn)
@@ -544,10 +551,8 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
* information followed by "\n\n".
*/
p = strstr(msg.message, "\n\n");
- if (p) {
- p += 2;
- strbuf_addstr(&msgbuf, p);
- }
+ if (p)
+ strbuf_addstr(&msgbuf, skip_blank_lines(p + 2));
if (opts->record_origin) {
if (!has_conforming_footer(&msgbuf, NULL, 0))
@@ -561,16 +566,18 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REPLAY_REVERT) {
res = do_recursive_merge(base, next, base_label, next_label,
head, &msgbuf, opts);
- write_message(&msgbuf, git_path_merge_msg());
+ if (res < 0)
+ return res;
+ res |= write_message(&msgbuf, git_path_merge_msg());
} else {
struct commit_list *common = NULL;
struct commit_list *remotes = NULL;
- write_message(&msgbuf, git_path_merge_msg());
+ res = write_message(&msgbuf, git_path_merge_msg());
commit_list_insert(base, &common);
commit_list_insert(next, &remotes);
- res = try_merge_command(opts->strategy, opts->xopts_nr, opts->xopts,
+ res |= try_merge_command(opts->strategy, opts->xopts_nr, opts->xopts,
common, sha1_to_hex(head), remotes);
free_commit_list(common);
free_commit_list(remotes);
@@ -582,12 +589,14 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
* However, if the merge did not even start, then we don't want to
* write it at all.
*/
- if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1))
- update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL,
- REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
- if (opts->action == REPLAY_REVERT && ((opts->no_commit && res == 0) || res == 1))
- update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL,
- REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+ if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1) &&
+ update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL,
+ REF_NODEREF, UPDATE_REFS_MSG_ON_ERR))
+ res = -1;
+ if (opts->action == REPLAY_REVERT && ((opts->no_commit && res == 0) || res == 1) &&
+ update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL,
+ REF_NODEREF, UPDATE_REFS_MSG_ON_ERR))
+ res = -1;
if (res) {
error(opts->action == REPLAY_REVERT
@@ -614,7 +623,7 @@ leave:
return res;
}
-static void prepare_revs(struct replay_opts *opts)
+static int prepare_revs(struct replay_opts *opts)
{
/*
* picking (but not reverting) ranges (but not individual revisions)
@@ -624,24 +633,32 @@ static void prepare_revs(struct replay_opts *opts)
opts->revs->reverse ^= 1;
if (prepare_revision_walk(opts->revs))
- die(_("revision walk setup failed"));
+ return error(_("revision walk setup failed"));
if (!opts->revs->commits)
- die(_("empty commit set passed"));
+ return error(_("empty commit set passed"));
+ return 0;
}
-static void read_and_refresh_cache(struct replay_opts *opts)
+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)
- die(_("git %s: failed to read the index"), action_name(opts));
+ 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))
- die(_("git %s: failed to refresh the index"), action_name(opts));
+ 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;
}
static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
@@ -697,9 +714,14 @@ static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *
* opts; we don't support arbitrary instructions
*/
if (action != opts->action) {
- const char *action_str;
- action_str = action == REPLAY_REVERT ? "revert" : "cherry-pick";
- error(_("Cannot %s during a %s"), action_str, action_name(opts));
+ if (action == REPLAY_REVERT)
+ error((opts->action == REPLAY_REVERT)
+ ? _("Cannot revert during another revert.")
+ : _("Cannot revert during a cherry-pick."));
+ else
+ error((opts->action == REPLAY_REVERT)
+ ? _("Cannot cherry-pick during a revert.")
+ : _("Cannot cherry-pick during another cherry-pick."));
return NULL;
}
@@ -730,7 +752,7 @@ static int parse_insn_buffer(char *buf, struct commit_list **todo_list,
return 0;
}
-static void read_populate_todo(struct commit_list **todo_list,
+static int read_populate_todo(struct commit_list **todo_list,
struct replay_opts *opts)
{
struct strbuf buf = STRBUF_INIT;
@@ -738,18 +760,21 @@ static void read_populate_todo(struct commit_list **todo_list,
fd = open(git_path_todo_file(), O_RDONLY);
if (fd < 0)
- die_errno(_("Could not open %s"), git_path_todo_file());
+ return error_errno(_("Could not open %s"),
+ git_path_todo_file());
if (strbuf_read(&buf, fd, 0) < 0) {
close(fd);
strbuf_release(&buf);
- die(_("Could not read %s."), git_path_todo_file());
+ return error(_("Could not read %s."), git_path_todo_file());
}
close(fd);
res = parse_insn_buffer(buf.buf, todo_list, opts);
strbuf_release(&buf);
if (res)
- die(_("Unusable instruction sheet: %s"), git_path_todo_file());
+ return error(_("Unusable instruction sheet: %s"),
+ git_path_todo_file());
+ return 0;
}
static int populate_opts_cb(const char *key, const char *value, void *data)
@@ -787,25 +812,35 @@ static int populate_opts_cb(const char *key, const char *value, void *data)
return 0;
}
-static void read_populate_opts(struct replay_opts **opts_ptr)
+static int read_populate_opts(struct replay_opts **opts)
{
if (!file_exists(git_path_opts_file()))
- return;
- if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts_ptr) < 0)
- die(_("Malformed options sheet: %s"), git_path_opts_file());
+ return 0;
+ /*
+ * The function git_parse_source(), called from git_config_from_file(),
+ * may die() in case of a syntactically incorrect file. We do not care
+ * about this case, though, because we wrote that file ourselves, so we
+ * are pretty certain that it is syntactically correct.
+ */
+ if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts) < 0)
+ return error(_("Malformed options sheet: %s"),
+ git_path_opts_file());
+ return 0;
}
-static void walk_revs_populate_todo(struct commit_list **todo_list,
+static int walk_revs_populate_todo(struct commit_list **todo_list,
struct replay_opts *opts)
{
struct commit *commit;
struct commit_list **next;
- prepare_revs(opts);
+ if (prepare_revs(opts))
+ return -1;
next = todo_list;
while ((commit = get_revision(opts->revs)))
next = commit_list_append(commit, next);
+ return 0;
}
static int create_seq_dir(void)
@@ -816,23 +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)
@@ -875,8 +920,7 @@ static int sequencer_rollback(struct replay_opts *opts)
return rollback_single_pick();
}
if (!f)
- return error(_("cannot open %s: %s"), git_path_head_file(),
- strerror(errno));
+ return error_errno(_("cannot open %s"), git_path_head_file());
if (strbuf_getline_lf(&buf, f)) {
error(_("cannot read %s: %s"), git_path_head_file(),
ferror(f) ? strerror(errno) : _("unexpected end of file"));
@@ -889,6 +933,10 @@ static int sequencer_rollback(struct replay_opts *opts)
git_path_head_file());
goto fail;
}
+ if (is_null_sha1(sha1)) {
+ error(_("cannot abort from a branch yet to be born"));
+ goto fail;
+ }
if (reset_for_rollback(sha1))
goto fail;
remove_sequencer_state();
@@ -899,57 +947,66 @@ fail:
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)
@@ -961,10 +1018,12 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
if (opts->allow_ff)
assert(!(opts->signoff || opts->no_commit ||
opts->record_origin || opts->edit));
- read_and_refresh_cache(opts);
+ if (read_and_refresh_cache(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;
@@ -994,8 +1053,9 @@ static int sequencer_continue(struct replay_opts *opts)
if (!file_exists(git_path_todo_file()))
return continue_single_pick();
- read_populate_opts(&opts);
- read_populate_todo(&todo_list, opts);
+ if (read_populate_opts(&opts) ||
+ read_populate_todo(&todo_list, opts))
+ return -1;
/* Verify that the conflict has been resolved */
if (file_exists(git_path_cherry_pick_head()) ||
@@ -1025,7 +1085,8 @@ int sequencer_pick_revisions(struct replay_opts *opts)
if (opts->subcommand == REPLAY_NONE)
assert(opts->revs);
- read_and_refresh_cache(opts);
+ if (read_and_refresh_cache(opts))
+ return -1;
/*
* Decide what to do depending on the arguments; a fresh
@@ -1052,10 +1113,11 @@ int sequencer_pick_revisions(struct replay_opts *opts)
if (!get_sha1(name, sha1)) {
if (!lookup_commit_reference_gently(sha1, 1)) {
enum object_type type = sha1_object_info(sha1, NULL);
- die(_("%s: can't cherry-pick a %s"), name, typename(type));
+ return error(_("%s: can't cherry-pick a %s"),
+ name, typename(type));
}
} else
- die(_("%s: bad revision"), name);
+ return error(_("%s: bad revision"), name);
}
/*
@@ -1071,10 +1133,10 @@ int sequencer_pick_revisions(struct replay_opts *opts)
!opts->revs->cmdline.rev->flags) {
struct commit *cmit;
if (prepare_revision_walk(opts->revs))
- die(_("revision walk setup failed"));
+ return error(_("revision walk setup failed"));
cmit = get_revision(opts->revs);
if (!cmit || get_revision(opts->revs))
- die("BUG: expected exactly one commit from walk");
+ return error("BUG: expected exactly one commit from walk");
return single_pick(cmit, opts);
}
@@ -1084,16 +1146,15 @@ int sequencer_pick_revisions(struct replay_opts *opts)
* progress
*/
- walk_revs_populate_todo(&todo_list, opts);
- if (create_seq_dir() < 0)
+ if (walk_revs_populate_todo(&todo_list, opts) ||
+ create_seq_dir() < 0)
+ return -1;
+ if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT))
+ return error(_("Can't revert as initial commit"));
+ if (save_head(sha1_to_hex(sha1)))
+ return -1;
+ if (save_opts(opts))
return -1;
- if (get_sha1("HEAD", sha1)) {
- if (opts->action == REPLAY_REVERT)
- return error(_("Can't revert as initial commit"));
- return error(_("Can't cherry-pick into empty head"));
- }
- save_head(sha1_to_hex(sha1));
- save_opts(opts);
return pick_commits(todo_list, opts);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 13:19:49 +0000