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tag.c: use ref transactions when doing updates
Change tag.c to use ref transactions for all ref updates. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -548,7 +548,6 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
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struct strbuf ref = STRBUF_INIT;
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unsigned char object[20], prev[20];
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const char *object_ref, *tag;
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struct ref_lock *lock;
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struct create_tag_options opt;
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char *cleanup_arg = NULL;
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int annotate = 0, force = 0, lines = -1;
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@ -556,6 +555,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
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const char *msgfile = NULL, *keyid = NULL;
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struct msg_arg msg = { 0, STRBUF_INIT };
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struct commit_list *with_commit = NULL;
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struct ref_transaction *transaction;
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struct strbuf err = STRBUF_INIT;
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struct option options[] = {
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OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
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{ OPTION_INTEGER, 'n', NULL, &lines, N_("n"),
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@ -701,14 +702,17 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
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if (annotate)
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create_tag(object, tag, &buf, &opt, prev, object);
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lock = lock_any_ref_for_update(ref.buf, prev, 0, NULL);
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if (!lock)
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die(_("%s: cannot lock the ref"), ref.buf);
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if (write_ref_sha1(lock, object, NULL) < 0)
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die(_("%s: cannot update the ref"), ref.buf);
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transaction = ref_transaction_begin(&err);
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if (!transaction ||
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ref_transaction_update(transaction, ref.buf, object, prev,
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0, 1, &err) ||
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ref_transaction_commit(transaction, NULL, &err))
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die("%s", err.buf);
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ref_transaction_free(transaction);
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if (force && !is_null_sha1(prev) && hashcmp(prev, object))
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printf(_("Updated tag '%s' (was %s)\n"), tag, find_unique_abbrev(prev, DEFAULT_ABBREV));
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strbuf_release(&err);
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strbuf_release(&buf);
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strbuf_release(&ref);
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return 0;
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