6b526ced6f
Conversion from uchar[20] to struct object_id continues. * bc/object-id: (53 commits) object: convert parse_object* to take struct object_id tree: convert parse_tree_indirect to struct object_id sequencer: convert do_recursive_merge to struct object_id diff-lib: convert do_diff_cache to struct object_id builtin/ls-tree: convert to struct object_id merge: convert checkout_fast_forward to struct object_id sequencer: convert fast_forward_to to struct object_id builtin/ls-files: convert overlay_tree_on_cache to object_id builtin/read-tree: convert to struct object_id sha1_name: convert internals of peel_onion to object_id upload-pack: convert remaining parse_object callers to object_id revision: convert remaining parse_object callers to object_id revision: rename add_pending_sha1 to add_pending_oid http-push: convert process_ls_object and descendants to object_id refs/files-backend: convert many internals to struct object_id refs: convert struct ref_update to use struct object_id ref-filter: convert some static functions to struct object_id Convert struct ref_array_item to struct object_id Convert the verify_pack callback to struct object_id Convert lookup_tag to struct object_id ...
737 lines
28 KiB
C
737 lines
28 KiB
C
#ifndef REFS_H
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#define REFS_H
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struct object_id;
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struct ref_store;
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struct strbuf;
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struct string_list;
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struct worktree;
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/*
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* Resolve a reference, recursively following symbolic refererences.
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*
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* Store the referred-to object's name in sha1 and return the name of
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* the non-symbolic reference that ultimately pointed at it. The
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* return value, if not NULL, is a pointer into either a static buffer
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* or the input ref.
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*
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* If the reference cannot be resolved to an object, the behavior
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* depends on the RESOLVE_REF_READING flag:
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*
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* - If RESOLVE_REF_READING is set, return NULL.
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*
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* - If RESOLVE_REF_READING is not set, clear sha1 and return the name of
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* the last reference name in the chain, which will either be a non-symbolic
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* reference or an undefined reference. If this is a prelude to
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* "writing" to the ref, the return value is the name of the ref
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* that will actually be created or changed.
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*
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* If the RESOLVE_REF_NO_RECURSE flag is passed, only resolves one
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* level of symbolic reference. The value stored in sha1 for a symbolic
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* reference will always be null_sha1 in this case, and the return
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* value is the reference that the symref refers to directly.
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*
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* If flags is non-NULL, set the value that it points to the
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* combination of REF_ISPACKED (if the reference was found among the
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* packed references), REF_ISSYMREF (if the initial reference was a
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* symbolic reference), REF_BAD_NAME (if the reference name is ill
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* formed --- see RESOLVE_REF_ALLOW_BAD_NAME below), and REF_ISBROKEN
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* (if the ref is malformed or has a bad name). See refs.h for more detail
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* on each flag.
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*
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* If ref is not a properly-formatted, normalized reference, return
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* NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
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* give up and return NULL.
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*
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* RESOLVE_REF_ALLOW_BAD_NAME allows resolving refs even when their
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* name is invalid according to git-check-ref-format(1). If the name
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* is bad then the value stored in sha1 will be null_sha1 and the two
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* flags REF_ISBROKEN and REF_BAD_NAME will be set.
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*
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* Even with RESOLVE_REF_ALLOW_BAD_NAME, names that escape the refs/
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* directory and do not consist of all caps and underscores cannot be
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* resolved. The function returns NULL for such ref names.
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* Caps and underscores refers to the special refs, such as HEAD,
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* FETCH_HEAD and friends, that all live outside of the refs/ directory.
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*/
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#define RESOLVE_REF_READING 0x01
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#define RESOLVE_REF_NO_RECURSE 0x02
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#define RESOLVE_REF_ALLOW_BAD_NAME 0x04
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const char *refs_resolve_ref_unsafe(struct ref_store *refs,
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const char *refname,
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int resolve_flags,
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unsigned char *sha1,
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int *flags);
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const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
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unsigned char *sha1, int *flags);
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char *refs_resolve_refdup(struct ref_store *refs,
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const char *refname, int resolve_flags,
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unsigned char *sha1, int *flags);
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char *resolve_refdup(const char *refname, int resolve_flags,
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unsigned char *sha1, int *flags);
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int refs_read_ref_full(struct ref_store *refs, const char *refname,
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int resolve_flags, unsigned char *sha1, int *flags);
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int read_ref_full(const char *refname, int resolve_flags,
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unsigned char *sha1, int *flags);
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int read_ref(const char *refname, unsigned char *sha1);
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/*
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* Return 0 if a reference named refname could be created without
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* conflicting with the name of an existing reference. Otherwise,
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* return a negative value and write an explanation to err. If extras
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* is non-NULL, it is a list of additional refnames with which refname
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* is not allowed to conflict. If skip is non-NULL, ignore potential
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* conflicts with refs in skip (e.g., because they are scheduled for
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* deletion in the same operation). Behavior is undefined if the same
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* name is listed in both extras and skip.
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*
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* Two reference names conflict if one of them exactly matches the
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* leading components of the other; e.g., "foo/bar" conflicts with
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* both "foo" and with "foo/bar/baz" but not with "foo/bar" or
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* "foo/barbados".
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*
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* extras and skip must be sorted.
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*/
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int refs_verify_refname_available(struct ref_store *refs,
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const char *refname,
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const struct string_list *extras,
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const struct string_list *skip,
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struct strbuf *err);
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int ref_exists(const char *refname);
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int should_autocreate_reflog(const char *refname);
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int is_branch(const char *refname);
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extern int refs_init_db(struct strbuf *err);
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/*
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* If refname is a non-symbolic reference that refers to a tag object,
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* and the tag can be (recursively) dereferenced to a non-tag object,
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* store the SHA1 of the referred-to object to sha1 and return 0. If
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* any of these conditions are not met, return a non-zero value.
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* Symbolic references are considered unpeelable, even if they
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* ultimately resolve to a peelable tag.
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*/
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int refs_peel_ref(struct ref_store *refs, const char *refname,
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unsigned char *sha1);
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int peel_ref(const char *refname, unsigned char *sha1);
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/**
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* Resolve refname in the nested "gitlink" repository in the specified
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* submodule (which must be non-NULL). If the resolution is
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* successful, return 0 and set sha1 to the name of the object;
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* otherwise, return a non-zero value.
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*/
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int resolve_gitlink_ref(const char *submodule, const char *refname,
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unsigned char *sha1);
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/*
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* Return true iff abbrev_name is a possible abbreviation for
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* full_name according to the rules defined by ref_rev_parse_rules in
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* refs.c.
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*/
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int refname_match(const char *abbrev_name, const char *full_name);
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int expand_ref(const char *str, int len, unsigned char *sha1, char **ref);
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int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
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int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
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/*
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* A ref_transaction represents a collection of reference updates that
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* should succeed or fail together.
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*
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* Calling sequence
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* ----------------
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*
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* - Allocate and initialize a `struct ref_transaction` by calling
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* `ref_transaction_begin()`.
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*
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* - Specify the intended ref updates by calling one or more of the
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* following functions:
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* - `ref_transaction_update()`
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* - `ref_transaction_create()`
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* - `ref_transaction_delete()`
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* - `ref_transaction_verify()`
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*
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* - Then either:
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*
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* - Optionally call `ref_transaction_prepare()` to prepare the
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* transaction. This locks all references, checks preconditions,
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* etc. but doesn't finalize anything. If this step fails, the
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* transaction has been closed and can only be freed. If this step
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* succeeds, then `ref_transaction_commit()` is almost certain to
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* succeed. However, you can still call `ref_transaction_abort()`
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* if you decide not to commit the transaction after all.
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*
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* - Call `ref_transaction_commit()` to execute the transaction,
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* make the changes permanent, and release all locks. If you
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* haven't already called `ref_transaction_prepare()`, then
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* `ref_transaction_commit()` calls it for you.
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*
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* Or
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*
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* - Call `initial_ref_transaction_commit()` if the ref database is
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* known to be empty and have no other writers (e.g. during
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* clone). This is likely to be much faster than
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* `ref_transaction_commit()`. `ref_transaction_prepare()` should
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* *not* be called before `initial_ref_transaction_commit()`.
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*
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* - Then finally, call `ref_transaction_free()` to free the
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* `ref_transaction` data structure.
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*
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* At any time before calling `ref_transaction_commit()`, you can call
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* `ref_transaction_abort()` to abort the transaction, rollback any
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* locks, and free any associated resources (including the
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* `ref_transaction` data structure).
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*
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* Putting it all together, a complete reference update looks like
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*
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* struct ref_transaction *transaction;
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* struct strbuf err = STRBUF_INIT;
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* int ret = 0;
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*
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* transaction = ref_store_transaction_begin(refs, &err);
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* if (!transaction ||
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* ref_transaction_update(...) ||
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* ref_transaction_create(...) ||
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* ...etc... ||
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* ref_transaction_commit(transaction, &err)) {
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* error("%s", err.buf);
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* ret = -1;
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* }
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* ref_transaction_free(transaction);
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* strbuf_release(&err);
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* return ret;
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*
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* Error handling
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* --------------
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*
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* On error, transaction functions append a message about what
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* went wrong to the 'err' argument. The message mentions what
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* ref was being updated (if any) when the error occurred so it
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* can be passed to 'die' or 'error' as-is.
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*
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* The message is appended to err without first clearing err.
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* err will not be '\n' terminated.
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*
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* Caveats
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* -------
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*
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* Note that no locks are taken, and no refs are read, until
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* `ref_transaction_prepare()` or `ref_transaction_commit()` is
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* called. So, for example, `ref_transaction_verify()` won't report a
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* verification failure until the commit is attempted.
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*/
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struct ref_transaction;
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/*
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* Bit values set in the flags argument passed to each_ref_fn() and
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* stored in ref_iterator::flags. Other bits are for internal use
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* only:
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*/
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/* Reference is a symbolic reference. */
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#define REF_ISSYMREF 0x01
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/* Reference is a packed reference. */
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#define REF_ISPACKED 0x02
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/*
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* Reference cannot be resolved to an object name: dangling symbolic
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* reference (directly or indirectly), corrupt reference file,
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* reference exists but name is bad, or symbolic reference refers to
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* ill-formatted reference name.
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*/
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#define REF_ISBROKEN 0x04
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/*
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* Reference name is not well formed.
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*
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* See git-check-ref-format(1) for the definition of well formed ref names.
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*/
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#define REF_BAD_NAME 0x08
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/*
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* The signature for the callback function for the for_each_*()
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* functions below. The memory pointed to by the refname and sha1
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* arguments is only guaranteed to be valid for the duration of a
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* single callback invocation.
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*/
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typedef int each_ref_fn(const char *refname,
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const struct object_id *oid, int flags, void *cb_data);
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/*
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* The following functions invoke the specified callback function for
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* each reference indicated. If the function ever returns a nonzero
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* value, stop the iteration and return that value. Please note that
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* it is not safe to modify references while an iteration is in
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* progress, unless the same callback function invocation that
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* modifies the reference also returns a nonzero value to immediately
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* stop the iteration. Returned references are sorted.
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*/
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int refs_for_each_ref(struct ref_store *refs,
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each_ref_fn fn, void *cb_data);
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int refs_for_each_ref_in(struct ref_store *refs, const char *prefix,
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each_ref_fn fn, void *cb_data);
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int refs_for_each_tag_ref(struct ref_store *refs,
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each_ref_fn fn, void *cb_data);
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int refs_for_each_branch_ref(struct ref_store *refs,
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each_ref_fn fn, void *cb_data);
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int refs_for_each_remote_ref(struct ref_store *refs,
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each_ref_fn fn, void *cb_data);
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int head_ref(each_ref_fn fn, void *cb_data);
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int for_each_ref(each_ref_fn fn, void *cb_data);
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int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data);
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int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data,
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unsigned int broken);
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int for_each_tag_ref(each_ref_fn fn, void *cb_data);
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int for_each_branch_ref(each_ref_fn fn, void *cb_data);
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int for_each_remote_ref(each_ref_fn fn, void *cb_data);
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int for_each_replace_ref(each_ref_fn fn, void *cb_data);
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int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data);
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int for_each_glob_ref_in(each_ref_fn fn, const char *pattern,
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const char *prefix, void *cb_data);
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int head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data);
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int for_each_ref_submodule(const char *submodule,
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each_ref_fn fn, void *cb_data);
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int for_each_ref_in_submodule(const char *submodule, const char *prefix,
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each_ref_fn fn, void *cb_data);
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int for_each_tag_ref_submodule(const char *submodule,
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each_ref_fn fn, void *cb_data);
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int for_each_branch_ref_submodule(const char *submodule,
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each_ref_fn fn, void *cb_data);
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int for_each_remote_ref_submodule(const char *submodule,
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each_ref_fn fn, void *cb_data);
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int head_ref_namespaced(each_ref_fn fn, void *cb_data);
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int for_each_namespaced_ref(each_ref_fn fn, void *cb_data);
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/* can be used to learn about broken ref and symref */
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int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data);
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int for_each_rawref(each_ref_fn fn, void *cb_data);
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static inline const char *has_glob_specials(const char *pattern)
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{
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return strpbrk(pattern, "?*[");
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}
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void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname);
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void warn_dangling_symrefs(FILE *fp, const char *msg_fmt,
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const struct string_list *refnames);
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/*
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* Flags for controlling behaviour of pack_refs()
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* PACK_REFS_PRUNE: Prune loose refs after packing
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* PACK_REFS_ALL: Pack _all_ refs, not just tags and already packed refs
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*/
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#define PACK_REFS_PRUNE 0x0001
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#define PACK_REFS_ALL 0x0002
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/*
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* Write a packed-refs file for the current repository.
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* flags: Combination of the above PACK_REFS_* flags.
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*/
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int refs_pack_refs(struct ref_store *refs, unsigned int flags);
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/*
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* Flags controlling ref_transaction_update(), ref_transaction_create(), etc.
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* REF_NODEREF: act on the ref directly, instead of dereferencing
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* symbolic references.
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*
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* Other flags are reserved for internal use.
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*/
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#define REF_NODEREF 0x01
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#define REF_FORCE_CREATE_REFLOG 0x40
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/*
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* Setup reflog before using. Fill in err and return -1 on failure.
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*/
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int refs_create_reflog(struct ref_store *refs, const char *refname,
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int force_create, struct strbuf *err);
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int safe_create_reflog(const char *refname, int force_create, struct strbuf *err);
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/** Reads log for the value of ref during at_time. **/
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int read_ref_at(const char *refname, unsigned int flags,
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timestamp_t at_time, int cnt,
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unsigned char *sha1, char **msg,
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timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt);
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/** Check if a particular reflog exists */
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int refs_reflog_exists(struct ref_store *refs, const char *refname);
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int reflog_exists(const char *refname);
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/*
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* Delete the specified reference. If old_sha1 is non-NULL, then
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* verify that the current value of the reference is old_sha1 before
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* deleting it. If old_sha1 is NULL, delete the reference if it
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* exists, regardless of its old value. It is an error for old_sha1 to
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* be NULL_SHA1. msg and flags are passed through to
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* ref_transaction_delete().
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*/
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int refs_delete_ref(struct ref_store *refs, const char *msg,
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const char *refname,
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const unsigned char *old_sha1,
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unsigned int flags);
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int delete_ref(const char *msg, const char *refname,
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const unsigned char *old_sha1, unsigned int flags);
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/*
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* Delete the specified references. If there are any problems, emit
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* errors but attempt to keep going (i.e., the deletes are not done in
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* an all-or-nothing transaction). msg and flags are passed through to
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* ref_transaction_delete().
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*/
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int refs_delete_refs(struct ref_store *refs, const char *msg,
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struct string_list *refnames, unsigned int flags);
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int delete_refs(const char *msg, struct string_list *refnames,
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unsigned int flags);
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/** Delete a reflog */
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int refs_delete_reflog(struct ref_store *refs, const char *refname);
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int delete_reflog(const char *refname);
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/* iterate over reflog entries */
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typedef int each_reflog_ent_fn(
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struct object_id *old_oid, struct object_id *new_oid,
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const char *committer, timestamp_t timestamp,
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int tz, const char *msg, void *cb_data);
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int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname,
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each_reflog_ent_fn fn, void *cb_data);
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int refs_for_each_reflog_ent_reverse(struct ref_store *refs,
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const char *refname,
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each_reflog_ent_fn fn,
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void *cb_data);
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int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, void *cb_data);
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int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void *cb_data);
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/*
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* Calls the specified function for each reflog file until it returns nonzero,
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* and returns the value. Reflog file order is unspecified.
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*/
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int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data);
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int for_each_reflog(each_ref_fn fn, void *cb_data);
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#define REFNAME_ALLOW_ONELEVEL 1
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#define REFNAME_REFSPEC_PATTERN 2
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/*
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* Return 0 iff refname has the correct format for a refname according
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* to the rules described in Documentation/git-check-ref-format.txt.
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* If REFNAME_ALLOW_ONELEVEL is set in flags, then accept one-level
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|
* reference names. If REFNAME_REFSPEC_PATTERN is set in flags, then
|
|
* allow a single "*" wildcard character in the refspec. No leading or
|
|
* repeated slashes are accepted.
|
|
*/
|
|
int check_refname_format(const char *refname, int flags);
|
|
|
|
const char *prettify_refname(const char *refname);
|
|
|
|
char *shorten_unambiguous_ref(const char *refname, int strict);
|
|
|
|
/** rename ref, return 0 on success **/
|
|
int refs_rename_ref(struct ref_store *refs, const char *oldref,
|
|
const char *newref, const char *logmsg);
|
|
int rename_ref(const char *oldref, const char *newref, const char *logmsg);
|
|
|
|
int refs_create_symref(struct ref_store *refs, const char *refname,
|
|
const char *target, const char *logmsg);
|
|
int create_symref(const char *refname, const char *target, const char *logmsg);
|
|
|
|
enum action_on_err {
|
|
UPDATE_REFS_MSG_ON_ERR,
|
|
UPDATE_REFS_DIE_ON_ERR,
|
|
UPDATE_REFS_QUIET_ON_ERR
|
|
};
|
|
|
|
/*
|
|
* Begin a reference transaction. The reference transaction must
|
|
* be freed by calling ref_transaction_free().
|
|
*/
|
|
struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs,
|
|
struct strbuf *err);
|
|
struct ref_transaction *ref_transaction_begin(struct strbuf *err);
|
|
|
|
/*
|
|
* Reference transaction updates
|
|
*
|
|
* The following four functions add a reference check or update to a
|
|
* ref_transaction. They have some common similar parameters:
|
|
*
|
|
* transaction -- a pointer to an open ref_transaction, obtained
|
|
* from ref_transaction_begin().
|
|
*
|
|
* refname -- the name of the reference to be affected.
|
|
*
|
|
* new_sha1 -- the SHA-1 that should be set to be the new value of
|
|
* the reference. Some functions allow this parameter to be
|
|
* NULL, meaning that the reference is not changed, or
|
|
* null_sha1, meaning that the reference should be deleted. A
|
|
* copy of this value is made in the transaction.
|
|
*
|
|
* old_sha1 -- the SHA-1 value that the reference must have before
|
|
* the update. Some functions allow this parameter to be NULL,
|
|
* meaning that the old value of the reference is not checked,
|
|
* or null_sha1, meaning that the reference must not exist
|
|
* before the update. A copy of this value is made in the
|
|
* transaction.
|
|
*
|
|
* flags -- flags affecting the update, passed to
|
|
* update_ref_lock(). Can be REF_NODEREF, which means that
|
|
* symbolic references should not be followed.
|
|
*
|
|
* msg -- a message describing the change (for the reflog).
|
|
*
|
|
* err -- a strbuf for receiving a description of any error that
|
|
* might have occurred.
|
|
*
|
|
* The functions make internal copies of refname and msg, so the
|
|
* caller retains ownership of these parameters.
|
|
*
|
|
* The functions return 0 on success and non-zero on failure. A
|
|
* failure means that the transaction as a whole has failed and needs
|
|
* to be rolled back.
|
|
*/
|
|
|
|
/*
|
|
* Add a reference update to transaction. new_sha1 is the value that
|
|
* the reference should have after the update, or null_sha1 if it
|
|
* should be deleted. If new_sha1 is NULL, then the reference is not
|
|
* changed at all. old_sha1 is the value that the reference must have
|
|
* before the update, or null_sha1 if it must not have existed
|
|
* beforehand. The old value is checked after the lock is taken to
|
|
* prevent races. If the old value doesn't agree with old_sha1, the
|
|
* whole transaction fails. If old_sha1 is NULL, then the previous
|
|
* value is not checked.
|
|
*
|
|
* See the above comment "Reference transaction updates" for more
|
|
* information.
|
|
*/
|
|
int ref_transaction_update(struct ref_transaction *transaction,
|
|
const char *refname,
|
|
const unsigned char *new_sha1,
|
|
const unsigned char *old_sha1,
|
|
unsigned int flags, const char *msg,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Add a reference creation to transaction. new_sha1 is the value that
|
|
* the reference should have after the update; it must not be
|
|
* null_sha1. It is verified that the reference does not exist
|
|
* already.
|
|
*
|
|
* See the above comment "Reference transaction updates" for more
|
|
* information.
|
|
*/
|
|
int ref_transaction_create(struct ref_transaction *transaction,
|
|
const char *refname,
|
|
const unsigned char *new_sha1,
|
|
unsigned int flags, const char *msg,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Add a reference deletion to transaction. If old_sha1 is non-NULL,
|
|
* then it holds the value that the reference should have had before
|
|
* the update (which must not be null_sha1).
|
|
*
|
|
* See the above comment "Reference transaction updates" for more
|
|
* information.
|
|
*/
|
|
int ref_transaction_delete(struct ref_transaction *transaction,
|
|
const char *refname,
|
|
const unsigned char *old_sha1,
|
|
unsigned int flags, const char *msg,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Verify, within a transaction, that refname has the value old_sha1,
|
|
* or, if old_sha1 is null_sha1, then verify that the reference
|
|
* doesn't exist. old_sha1 must be non-NULL.
|
|
*
|
|
* See the above comment "Reference transaction updates" for more
|
|
* information.
|
|
*/
|
|
int ref_transaction_verify(struct ref_transaction *transaction,
|
|
const char *refname,
|
|
const unsigned char *old_sha1,
|
|
unsigned int flags,
|
|
struct strbuf *err);
|
|
|
|
/* Naming conflict (for example, the ref names A and A/B conflict). */
|
|
#define TRANSACTION_NAME_CONFLICT -1
|
|
/* All other errors. */
|
|
#define TRANSACTION_GENERIC_ERROR -2
|
|
|
|
/*
|
|
* Perform the preparatory stages of commiting `transaction`. Acquire
|
|
* any needed locks, check preconditions, etc.; basically, do as much
|
|
* as possible to ensure that the transaction will be able to go
|
|
* through, stopping just short of making any irrevocable or
|
|
* user-visible changes. The updates that this function prepares can
|
|
* be finished up by calling `ref_transaction_commit()` or rolled back
|
|
* by calling `ref_transaction_abort()`.
|
|
*
|
|
* On success, return 0 and leave the transaction in "prepared" state.
|
|
* On failure, abort the transaction, write an error message to `err`,
|
|
* and return one of the `TRANSACTION_*` constants.
|
|
*
|
|
* Callers who don't need such fine-grained control over commiting
|
|
* reference transactions should just call `ref_transaction_commit()`.
|
|
*/
|
|
int ref_transaction_prepare(struct ref_transaction *transaction,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Commit all of the changes that have been queued in transaction, as
|
|
* atomically as possible. On success, return 0 and leave the
|
|
* transaction in "closed" state. On failure, roll back the
|
|
* transaction, write an error message to `err`, and return one of the
|
|
* `TRANSACTION_*` constants
|
|
*/
|
|
int ref_transaction_commit(struct ref_transaction *transaction,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Abort `transaction`, which has been begun and possibly prepared,
|
|
* but not yet committed.
|
|
*/
|
|
int ref_transaction_abort(struct ref_transaction *transaction,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Like ref_transaction_commit(), but optimized for creating
|
|
* references when originally initializing a repository (e.g., by "git
|
|
* clone"). It writes the new references directly to packed-refs
|
|
* without locking the individual references.
|
|
*
|
|
* It is a bug to call this function when there might be other
|
|
* processes accessing the repository or if there are existing
|
|
* references that might conflict with the ones being created. All
|
|
* old_sha1 values must either be absent or NULL_SHA1.
|
|
*/
|
|
int initial_ref_transaction_commit(struct ref_transaction *transaction,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Free `*transaction` and all associated data.
|
|
*/
|
|
void ref_transaction_free(struct ref_transaction *transaction);
|
|
|
|
/**
|
|
* Lock, update, and unlock a single reference. This function
|
|
* basically does a transaction containing a single call to
|
|
* ref_transaction_update(). The parameters to this function have the
|
|
* same meaning as the corresponding parameters to
|
|
* ref_transaction_update(). Handle errors as requested by the `onerr`
|
|
* argument.
|
|
*/
|
|
int refs_update_ref(struct ref_store *refs, const char *msg, const char *refname,
|
|
const unsigned char *new_sha1, const unsigned char *old_sha1,
|
|
unsigned int flags, enum action_on_err onerr);
|
|
int update_ref(const char *msg, const char *refname,
|
|
const unsigned char *new_sha1, const unsigned char *old_sha1,
|
|
unsigned int flags, enum action_on_err onerr);
|
|
int update_ref_oid(const char *msg, const char *refname,
|
|
const struct object_id *new_oid, const struct object_id *old_oid,
|
|
unsigned int flags, enum action_on_err onerr);
|
|
|
|
int parse_hide_refs_config(const char *var, const char *value, const char *);
|
|
|
|
/*
|
|
* Check whether a ref is hidden. If no namespace is set, both the first and
|
|
* the second parameter point to the full ref name. If a namespace is set and
|
|
* the ref is inside that namespace, the first parameter is a pointer to the
|
|
* name of the ref with the namespace prefix removed. If a namespace is set and
|
|
* the ref is outside that namespace, the first parameter is NULL. The second
|
|
* parameter always points to the full ref name.
|
|
*/
|
|
int ref_is_hidden(const char *, const char *);
|
|
|
|
enum ref_type {
|
|
REF_TYPE_PER_WORKTREE,
|
|
REF_TYPE_PSEUDOREF,
|
|
REF_TYPE_NORMAL,
|
|
};
|
|
|
|
enum ref_type ref_type(const char *refname);
|
|
|
|
enum expire_reflog_flags {
|
|
EXPIRE_REFLOGS_DRY_RUN = 1 << 0,
|
|
EXPIRE_REFLOGS_UPDATE_REF = 1 << 1,
|
|
EXPIRE_REFLOGS_VERBOSE = 1 << 2,
|
|
EXPIRE_REFLOGS_REWRITE = 1 << 3
|
|
};
|
|
|
|
/*
|
|
* The following interface is used for reflog expiration. The caller
|
|
* calls reflog_expire(), supplying it with three callback functions,
|
|
* of the following types. The callback functions define the
|
|
* expiration policy that is desired.
|
|
*
|
|
* reflog_expiry_prepare_fn -- Called once after the reference is
|
|
* locked.
|
|
*
|
|
* reflog_expiry_should_prune_fn -- Called once for each entry in the
|
|
* existing reflog. It should return true iff that entry should be
|
|
* pruned.
|
|
*
|
|
* reflog_expiry_cleanup_fn -- Called once before the reference is
|
|
* unlocked again.
|
|
*/
|
|
typedef void reflog_expiry_prepare_fn(const char *refname,
|
|
const struct object_id *oid,
|
|
void *cb_data);
|
|
typedef int reflog_expiry_should_prune_fn(struct object_id *ooid,
|
|
struct object_id *noid,
|
|
const char *email,
|
|
timestamp_t timestamp, int tz,
|
|
const char *message, void *cb_data);
|
|
typedef void reflog_expiry_cleanup_fn(void *cb_data);
|
|
|
|
/*
|
|
* Expire reflog entries for the specified reference. sha1 is the old
|
|
* value of the reference. flags is a combination of the constants in
|
|
* enum expire_reflog_flags. The three function pointers are described
|
|
* above. On success, return zero.
|
|
*/
|
|
int refs_reflog_expire(struct ref_store *refs,
|
|
const char *refname,
|
|
const unsigned char *sha1,
|
|
unsigned int flags,
|
|
reflog_expiry_prepare_fn prepare_fn,
|
|
reflog_expiry_should_prune_fn should_prune_fn,
|
|
reflog_expiry_cleanup_fn cleanup_fn,
|
|
void *policy_cb_data);
|
|
int reflog_expire(const char *refname, const unsigned char *sha1,
|
|
unsigned int flags,
|
|
reflog_expiry_prepare_fn prepare_fn,
|
|
reflog_expiry_should_prune_fn should_prune_fn,
|
|
reflog_expiry_cleanup_fn cleanup_fn,
|
|
void *policy_cb_data);
|
|
|
|
int ref_storage_backend_exists(const char *name);
|
|
|
|
struct ref_store *get_main_ref_store(void);
|
|
/*
|
|
* Return the ref_store instance for the specified submodule. For the
|
|
* main repository, use submodule==NULL; such a call cannot fail. For
|
|
* a submodule, the submodule must exist and be a nonbare repository,
|
|
* otherwise return NULL. If the requested reference store has not yet
|
|
* been initialized, initialize it first.
|
|
*
|
|
* For backwards compatibility, submodule=="" is treated the same as
|
|
* submodule==NULL.
|
|
*/
|
|
struct ref_store *get_submodule_ref_store(const char *submodule);
|
|
struct ref_store *get_worktree_ref_store(const struct worktree *wt);
|
|
|
|
#endif /* REFS_H */
|