#ifndef REFS_H #define REFS_H #include "cache.h" struct object_id; struct ref_store; struct repository; struct strbuf; struct string_list; struct string_list_item; struct worktree; /* * Resolve a reference, recursively following symbolic refererences. * * Return the name of the non-symbolic reference that ultimately pointed * at the resolved object name. The return value, if not NULL, is a * pointer into either a static buffer or the input ref. * * If oid is non-NULL, store the referred-to object's name in it. * * If the reference cannot be resolved to an object, the behavior * depends on the RESOLVE_REF_READING flag: * * - If RESOLVE_REF_READING is set, return NULL. * * - If RESOLVE_REF_READING is not set, clear oid and return the name of * the last reference name in the chain, which will either be a non-symbolic * reference or an undefined reference. If this is a prelude to * "writing" to the ref, the return value is the name of the ref * that will actually be created or changed. * * If the RESOLVE_REF_NO_RECURSE flag is passed, only resolves one * level of symbolic reference. The value stored in oid for a symbolic * reference will always be null_oid in this case, and the return * value is the reference that the symref refers to directly. * * If flags is non-NULL, set the value that it points to the * combination of REF_ISPACKED (if the reference was found among the * packed references), REF_ISSYMREF (if the initial reference was a * symbolic reference), REF_BAD_NAME (if the reference name is ill * formed --- see RESOLVE_REF_ALLOW_BAD_NAME below), and REF_ISBROKEN * (if the ref is malformed or has a bad name). See refs.h for more detail * on each flag. * * If ref is not a properly-formatted, normalized reference, return * NULL. If more than MAXDEPTH recursive symbolic lookups are needed, * give up and return NULL. * * RESOLVE_REF_ALLOW_BAD_NAME allows resolving refs even when their * name is invalid according to git-check-ref-format(1). If the name * is bad then the value stored in oid will be null_oid and the two * flags REF_ISBROKEN and REF_BAD_NAME will be set. * * Even with RESOLVE_REF_ALLOW_BAD_NAME, names that escape the refs/ * directory and do not consist of all caps and underscores cannot be * resolved. The function returns NULL for such ref names. * Caps and underscores refers to the special refs, such as HEAD, * FETCH_HEAD and friends, that all live outside of the refs/ directory. */ #define RESOLVE_REF_READING 0x01 #define RESOLVE_REF_NO_RECURSE 0x02 #define RESOLVE_REF_ALLOW_BAD_NAME 0x04 const char *refs_resolve_ref_unsafe(struct ref_store *refs, const char *refname, int resolve_flags, struct object_id *oid, int *flags); const char *resolve_ref_unsafe(const char *refname, int resolve_flags, struct object_id *oid, int *flags); char *refs_resolve_refdup(struct ref_store *refs, const char *refname, int resolve_flags, struct object_id *oid, int *flags); char *resolve_refdup(const char *refname, int resolve_flags, struct object_id *oid, int *flags); int refs_read_ref_full(struct ref_store *refs, const char *refname, int resolve_flags, struct object_id *oid, int *flags); int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags); int read_ref(const char *refname, struct object_id *oid); /* * Return 0 if a reference named refname could be created without * conflicting with the name of an existing reference. Otherwise, * return a negative value and write an explanation to err. If extras * is non-NULL, it is a list of additional refnames with which refname * is not allowed to conflict. If skip is non-NULL, ignore potential * conflicts with refs in skip (e.g., because they are scheduled for * deletion in the same operation). Behavior is undefined if the same * name is listed in both extras and skip. * * Two reference names conflict if one of them exactly matches the * leading components of the other; e.g., "foo/bar" conflicts with * both "foo" and with "foo/bar/baz" but not with "foo/bar" or * "foo/barbados". * * extras and skip must be sorted. */ int refs_verify_refname_available(struct ref_store *refs, const char *refname, const struct string_list *extras, const struct string_list *skip, struct strbuf *err); int refs_ref_exists(struct ref_store *refs, const char *refname); int ref_exists(const char *refname); int should_autocreate_reflog(const char *refname); int is_branch(const char *refname); int refs_init_db(struct strbuf *err); /* * Return the peeled value of the oid currently being iterated via * for_each_ref(), etc. This is equivalent to calling: * * peel_object(oid, &peeled); * * with the "oid" value given to the each_ref_fn callback, except * that some ref storage may be able to answer the query without * actually loading the object in memory. */ int peel_iterated_oid(const struct object_id *base, struct object_id *peeled); /** * Resolve refname in the nested "gitlink" repository in the specified * submodule (which must be non-NULL). If the resolution is * successful, return 0 and set oid to the name of the object; * otherwise, return a non-zero value. */ int resolve_gitlink_ref(const char *submodule, const char *refname, struct object_id *oid); /* * Return true iff abbrev_name is a possible abbreviation for * full_name according to the rules defined by ref_rev_parse_rules in * refs.c. */ int refname_match(const char *abbrev_name, const char *full_name); /* * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add * the results to 'prefixes' */ struct strvec; void expand_ref_prefix(struct strvec *prefixes, const char *prefix); int expand_ref(struct repository *r, const char *str, int len, struct object_id *oid, char **ref); int repo_dwim_ref(struct repository *r, const char *str, int len, struct object_id *oid, char **ref, int nonfatal_dangling_mark); int repo_dwim_log(struct repository *r, const char *str, int len, struct object_id *oid, char **ref); static inline int dwim_ref(const char *str, int len, struct object_id *oid, char **ref, int nonfatal_dangling_mark) { return repo_dwim_ref(the_repository, str, len, oid, ref, nonfatal_dangling_mark); } int dwim_log(const char *str, int len, struct object_id *oid, char **ref); /* * Retrieves the default branch name for newly-initialized repositories. * * The return value of `repo_default_branch_name()` is an allocated string. The * return value of `git_default_branch_name()` is a singleton. */ const char *git_default_branch_name(int quiet); char *repo_default_branch_name(struct repository *r, int quiet); /* * A ref_transaction represents a collection of reference updates that * should succeed or fail together. * * Calling sequence * ---------------- * * - Allocate and initialize a `struct ref_transaction` by calling * `ref_transaction_begin()`. * * - Specify the intended ref updates by calling one or more of the * following functions: * - `ref_transaction_update()` * - `ref_transaction_create()` * - `ref_transaction_delete()` * - `ref_transaction_verify()` * * - Then either: * * - Optionally call `ref_transaction_prepare()` to prepare the * transaction. This locks all references, checks preconditions, * etc. but doesn't finalize anything. If this step fails, the * transaction has been closed and can only be freed. If this step * succeeds, then `ref_transaction_commit()` is almost certain to * succeed. However, you can still call `ref_transaction_abort()` * if you decide not to commit the transaction after all. * * - Call `ref_transaction_commit()` to execute the transaction, * make the changes permanent, and release all locks. If you * haven't already called `ref_transaction_prepare()`, then * `ref_transaction_commit()` calls it for you. * * Or * * - Call `initial_ref_transaction_commit()` if the ref database is * known to be empty and have no other writers (e.g. during * clone). This is likely to be much faster than * `ref_transaction_commit()`. `ref_transaction_prepare()` should * *not* be called before `initial_ref_transaction_commit()`. * * - Then finally, call `ref_transaction_free()` to free the * `ref_transaction` data structure. * * At any time before calling `ref_transaction_commit()`, you can call * `ref_transaction_abort()` to abort the transaction, rollback any * locks, and free any associated resources (including the * `ref_transaction` data structure). * * Putting it all together, a complete reference update looks like * * struct ref_transaction *transaction; * struct strbuf err = STRBUF_INIT; * int ret = 0; * * transaction = ref_store_transaction_begin(refs, &err); * if (!transaction || * ref_transaction_update(...) || * ref_transaction_create(...) || * ...etc... || * ref_transaction_commit(transaction, &err)) { * error("%s", err.buf); * ret = -1; * } * ref_transaction_free(transaction); * strbuf_release(&err); * return ret; * * Error handling * -------------- * * On error, transaction functions append a message about what * went wrong to the 'err' argument. The message mentions what * ref was being updated (if any) when the error occurred so it * can be passed to 'die' or 'error' as-is. * * The message is appended to err without first clearing err. * err will not be '\n' terminated. * * Caveats * ------- * * Note that no locks are taken, and no refs are read, until * `ref_transaction_prepare()` or `ref_transaction_commit()` is * called. So, for example, `ref_transaction_verify()` won't report a * verification failure until the commit is attempted. */ struct ref_transaction; /* * Bit values set in the flags argument passed to each_ref_fn() and * stored in ref_iterator::flags. Other bits are for internal use * only: */ /* Reference is a symbolic reference. */ #define REF_ISSYMREF 0x01 /* Reference is a packed reference. */ #define REF_ISPACKED 0x02 /* * Reference cannot be resolved to an object name: dangling symbolic * reference (directly or indirectly), corrupt reference file, * reference exists but name is bad, or symbolic reference refers to * ill-formatted reference name. */ #define REF_ISBROKEN 0x04 /* * Reference name is not well formed. * * See git-check-ref-format(1) for the definition of well formed ref names. */ #define REF_BAD_NAME 0x08 /* * The signature for the callback function for the for_each_*() * functions below. The memory pointed to by the refname and oid * arguments is only guaranteed to be valid for the duration of a * single callback invocation. */ typedef int each_ref_fn(const char *refname, const struct object_id *oid, int flags, void *cb_data); /* * The same as each_ref_fn, but also with a repository argument that * contains the repository associated with the callback. */ typedef int each_repo_ref_fn(struct repository *r, const char *refname, const struct object_id *oid, int flags, void *cb_data); /* * The following functions invoke the specified callback function for * each reference indicated. If the function ever returns a nonzero * value, stop the iteration and return that value. Please note that * it is not safe to modify references while an iteration is in * progress, unless the same callback function invocation that * modifies the reference also returns a nonzero value to immediately * stop the iteration. Returned references are sorted. */ int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data); int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data); int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, each_ref_fn fn, void *cb_data); int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data); int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data); int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data); /* just iterates the head ref. */ int head_ref(each_ref_fn fn, void *cb_data); /* iterates all refs. */ int for_each_ref(each_ref_fn fn, void *cb_data); /** * iterates all refs which have a defined prefix and strips that prefix from * the passed variable refname. */ int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data); int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken); int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken); /** * iterate refs from the respective area. */ int for_each_tag_ref(each_ref_fn fn, void *cb_data); int for_each_branch_ref(each_ref_fn fn, void *cb_data); int for_each_remote_ref(each_ref_fn fn, void *cb_data); int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data); /* iterates all refs that match the specified glob pattern. */ int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data); int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, const char *prefix, void *cb_data); int head_ref_namespaced(each_ref_fn fn, void *cb_data); int for_each_namespaced_ref(each_ref_fn fn, void *cb_data); /* can be used to learn about broken ref and symref */ int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data); int for_each_rawref(each_ref_fn fn, void *cb_data); /* * Normalizes partial refs to their fully qualified form. * Will prepend to the if it doesn't start with 'refs/'. * will default to 'refs/' if NULL. * * item.string will be set to the result. * item.util will be set to NULL if contains glob characters, or * non-NULL if it doesn't. */ void normalize_glob_ref(struct string_list_item *item, const char *prefix, const char *pattern); static inline const char *has_glob_specials(const char *pattern) { return strpbrk(pattern, "?*["); } void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname); void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames); /* * Flags for controlling behaviour of pack_refs() * PACK_REFS_PRUNE: Prune loose refs after packing * PACK_REFS_ALL: Pack _all_ refs, not just tags and already packed refs */ #define PACK_REFS_PRUNE 0x0001 #define PACK_REFS_ALL 0x0002 /* * Write a packed-refs file for the current repository. * flags: Combination of the above PACK_REFS_* flags. */ int refs_pack_refs(struct ref_store *refs, unsigned int flags); /* * Setup reflog before using. Fill in err and return -1 on failure. */ int refs_create_reflog(struct ref_store *refs, const char *refname, int force_create, struct strbuf *err); int safe_create_reflog(const char *refname, int force_create, struct strbuf *err); /** Reads log for the value of ref during at_time. **/ int read_ref_at(struct ref_store *refs, const char *refname, unsigned int flags, timestamp_t at_time, int cnt, struct object_id *oid, char **msg, timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt); /** Check if a particular reflog exists */ int refs_reflog_exists(struct ref_store *refs, const char *refname); int reflog_exists(const char *refname); /* * Delete the specified reference. If old_oid is non-NULL, then * verify that the current value of the reference is old_oid before * deleting it. If old_oid is NULL, delete the reference if it * exists, regardless of its old value. It is an error for old_oid to * be null_oid. msg and flags are passed through to * ref_transaction_delete(). */ int refs_delete_ref(struct ref_store *refs, const char *msg, const char *refname, const struct object_id *old_oid, unsigned int flags); int delete_ref(const char *msg, const char *refname, const struct object_id *old_oid, unsigned int flags); /* * Delete the specified references. If there are any problems, emit * errors but attempt to keep going (i.e., the deletes are not done in * an all-or-nothing transaction). msg and flags are passed through to * ref_transaction_delete(). */ int refs_delete_refs(struct ref_store *refs, const char *msg, struct string_list *refnames, unsigned int flags); int delete_refs(const char *msg, struct string_list *refnames, unsigned int flags); /** Delete a reflog */ int refs_delete_reflog(struct ref_store *refs, const char *refname); int delete_reflog(const char *refname); /* * Callback to process a reflog entry found by the iteration functions (see * below) */ typedef int each_reflog_ent_fn( struct object_id *old_oid, struct object_id *new_oid, const char *committer, timestamp_t timestamp, int tz, const char *msg, void *cb_data); /* Iterate over reflog entries in the log for `refname`. */ /* oldest entry first */ int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, each_reflog_ent_fn fn, void *cb_data); /* youngest entry first */ int refs_for_each_reflog_ent_reverse(struct ref_store *refs, const char *refname, each_reflog_ent_fn fn, void *cb_data); /* * Iterate over reflog entries in the log for `refname` in the main ref store. */ /* oldest entry first */ int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, void *cb_data); /* youngest entry first */ int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void *cb_data); /* * Calls the specified function for each reflog file until it returns nonzero, * and returns the value. Reflog file order is unspecified. */ int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data); int for_each_reflog(each_ref_fn fn, void *cb_data); #define REFNAME_ALLOW_ONELEVEL 1 #define REFNAME_REFSPEC_PATTERN 2 /* * Return 0 iff refname has the correct format for a refname according * to the rules described in Documentation/git-check-ref-format.txt. * If REFNAME_ALLOW_ONELEVEL is set in flags, then accept one-level * 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); /* * Apply the rules from check_refname_format, but mutate the result until it * is acceptable, and place the result in "out". */ void sanitize_refname_component(const char *refname, struct strbuf *out); const char *prettify_refname(const char *refname); char *refs_shorten_unambiguous_ref(struct ref_store *refs, const char *refname, int strict); 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); /** copy ref, return 0 on success **/ int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, const char *newref, const char *logmsg); int copy_existing_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_oid -- the object ID 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_oid, meaning that the reference should be deleted. A * copy of this value is made in the transaction. * * old_oid -- the object ID 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_oid, 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(). Possible flags: REF_NO_DEREF, * REF_FORCE_CREATE_REFLOG. See those constants for more * information. * * 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. */ /* * The following flags can be passed to ref_transaction_update() etc. * Internally, they are stored in `ref_update::flags`, along with some * internal flags. */ /* * Act on the ref directly; i.e., without dereferencing symbolic refs. * If this flag is not specified, then symbolic references are * dereferenced and the update is applied to the referent. */ #define REF_NO_DEREF (1 << 0) /* * Force the creation of a reflog for this reference, even if it * didn't previously have a reflog. */ #define REF_FORCE_CREATE_REFLOG (1 << 1) /* * Bitmask of all of the flags that are allowed to be passed in to * ref_transaction_update() and friends: */ #define REF_TRANSACTION_UPDATE_ALLOWED_FLAGS \ (REF_NO_DEREF | REF_FORCE_CREATE_REFLOG) /* * Add a reference update to transaction. `new_oid` is the value that * the reference should have after the update, or `null_oid` if it * should be deleted. If `new_oid` is NULL, then the reference is not * changed at all. `old_oid` is the value that the reference must have * before the update, or `null_oid` 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_oid, the * whole transaction fails. If old_oid 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 struct object_id *new_oid, const struct object_id *old_oid, unsigned int flags, const char *msg, struct strbuf *err); /* * Add a reference creation to transaction. new_oid is the value that * the reference should have after the update; it must not be * null_oid. 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 struct object_id *new_oid, unsigned int flags, const char *msg, struct strbuf *err); /* * Add a reference deletion to transaction. If old_oid is non-NULL, * then it holds the value that the reference should have had before * the update (which must not be null_oid). * * See the above comment "Reference transaction updates" for more * information. */ int ref_transaction_delete(struct ref_transaction *transaction, const char *refname, const struct object_id *old_oid, unsigned int flags, const char *msg, struct strbuf *err); /* * Verify, within a transaction, that refname has the value old_oid, * or, if old_oid is null_oid, then verify that the reference * doesn't exist. old_oid 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 struct object_id *old_oid, 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 committing `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 committing * 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_oid values must either be absent or null_oid. */ 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 struct object_id *new_oid, const struct object_id *old_oid, unsigned int flags, enum action_on_err onerr); int update_ref(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, /* refs inside refs/ but not shared */ REF_TYPE_PSEUDOREF, /* refs outside refs/ in current worktree */ REF_TYPE_MAIN_PSEUDOREF, /* pseudo refs from the main worktree */ REF_TYPE_OTHER_PSEUDOREF, /* pseudo refs from other worktrees */ REF_TYPE_NORMAL, /* normal/shared refs inside refs/ */ }; 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. oid 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 struct object_id *oid, 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 struct object_id *oid, 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(struct repository *r); /** * Submodules * ---------- * * If you want to iterate the refs of a submodule you first need to add the * submodules object database. You can do this by a code-snippet like * this: * * const char *path = "path/to/submodule" * if (add_submodule_odb(path)) * die("Error submodule '%s' not populated.", path); * * `add_submodule_odb()` will return zero on success. If you * do not do this you will get an error for each ref that it does not point * to a valid object. * * Note: As a side-effect of this you cannot safely assume that all * objects you lookup are available in superproject. All submodule objects * will be available the same way as the superprojects objects. * * Example: * -------- * * ---- * static int handle_remote_ref(const char *refname, * const unsigned char *sha1, int flags, void *cb_data) * { * struct strbuf *output = cb_data; * strbuf_addf(output, "%s\n", refname); * return 0; * } * */ /* * 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 */